WORKING CONDITIONS CATALOGUE Working Under Hyperbaric Conditions Diving Work Closed Bell / Saturation
WORKING CONDITIONS CATALOGUE Working under Hyperbaric Conditions Diving Work Closed Bell / Saturation
Document code CAT 001.4 IV UK
(Beheer)stichting Werken onder Overdruk – SWOD - Ambachtsweg 27, 2641 KS PIJNACKER, W www.werkenonderoverdruk.nl E [email protected] T 015- 2512026 KvK 34307106
Preface The Foundation Working under Hyperbaric Conditions (SWOD) represents the three areas of work; diving work, caisson work and hyperbaric medicine work within the three subsectors of Defence, Fire Brigade and Civil sector in the field of Working Conditions.
Civil sector Defence Fire Brigade
Diving work Diving work Diving work
Hyperbaric Caisson work Medicine work
Hyperbaric medicine work
This version of the Working Conditions Catalogue Working under Hyperbaric Conditions inclusive WOD-SOE and information notes diving were approved on 23rd June 2020 by the SWOD Central College of Experts (CCvD) and is in force from 1st October 2020.
Disclaimer Although the Working Conditions Catalogue has been made with the greatest possible care, the Foundation Working under Hyperbaric Conditions, nor the website manager, nor the author assume no liability for any incorrect information, the possible causes and the possible consequences thereof.
If any questions arise concerning the accuracy of the requirements in the Working Conditions Catalogue, please refer to the Dutch version of the document, which is the official version.
Project group Working Conditions Catalogue Working under Hyperbaric Conditions Secretary: A. Morriën Fire Brigade: M. van Hattum Civil sector: J. Koelewijn Defence: M. Lieverse
Beheerstichting Werken onder Overdruk – SWOD – Ambachtsweg 27 NL 2641 KS PIJNACKER T +31 (0) 15 – 2512026 W www.werkenonderoverdruk.nl E [email protected]
Document code Expired version Current version Status Approved by Approved by dated CCvD Board CAT 001.4 IV UK CAT 001.3 IV UK 23 June 2020 Public 23 June 2020 26 June 2020
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Index
1 Introduction ...... 5 1.1 Scope of the Working Conditions Catalogue Working under Hyperbaric Conditions ...... 5 2 Parties Working Conditions Catalogue working under Hyperbaric Conditions ...... 6 3 Frequently asked Questions and Answers ...... 8 3.1 Who is this Working Conditions Catalogue for? ...... 8 3.2 What is a Working Condition Catalogue? ...... 8 3.3 What is the purpose of the Working Conditions Catalogue? ...... 8 3.4 What changes as a result of the Working Conditions Catalogue for Working under Hyperbaric Conditions? ...... 8 3.5 What can and must employees do with the Working Conditions Catalogue? ...... 9 3.6 Is it compulsory to comply with the Working Condition Catalogue? ...... 9 4 Working Conditions legislation, Working Conditions Catalogue, changes, validity and management ...... 10 4.1 Working Conditions Catalogue documents and changes ...... 10 4.2 Validity ...... 11 4.3 The management ...... 11 5 Explanation Working Conditions Catalogue Diving work Dry diving bell/ saturation ...... 12 5.1 Actor / Subject ...... 12 5.2 Risks ...... 12 5.3 Minimum control measure ...... 12 5.4 References / Abbreviations ...... 12 5.5 Terms / Abbreviations ...... 13 5.6 Base material ...... 14 6 Working under Hyperbaric Conditions System- and Maintenance requirements (WOD-SOE) ...... 15 7 Information notes diving ...... 16 8 Working Conditions Catalogue Diving work Dry diving bell / saturation ...... 17 8.1 Duties, responsibilities and requirements ...... 17 8.2 Equipment ...... 20 8.3 Personnel ...... 22 8.4 Medical ...... 26 8.5 Work planning ...... 32
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8.6 Emergency Procedures and Contingencies ...... 45 9 References Working Conditions Catalogue Diving work SSE ...... 47 9.1 Law ...... 47 9.1.1 Working Condition Legislation/ Working Conditions Act (AW)...... 47 9.1.2 Working Conditions Decree (AB) ...... 47 9.1.3 Working Conditions Decree and Self-employed persons (ZZP-ers) ...... 48 9.1.4 Working Conditions Regulations (AR) ...... 48 9.1.5 Working times legislation ...... 48 9.2 Working times in the mining sector ...... 48 9.2.1 Decree medical devices ...... 49 9.2.2 In-house Emergency Service organisation (BHV) ...... 49 9.2.3 Law on professions in the individual Health Care (Act BIG)) ...... 49 9.3 Document Working under Hyperbaric Condition System- and Maintenance Requirements . 49 9.4 Diving Work Guidelines / Standards ...... 49 9.5 Delta P ...... 51
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1 INTRODUCTION This document Diving Work Dry diving bell/ saturation of the Working Conditions Catalogue Working under Hyperbaric Conditions applies to all employers and employees involved in diving activities carried out with a dry diving bell and a saturation system.
This Working Conditions Catalogue identifies risks which may occur when carrying out work under hyperbaric conditions. For all these risks, it is indicated which minimum control measures an employer and employee shall take to manage these risks.
The Working Conditions Catalogue Working under Hyperbaric Conditions consists of 4 documents. They are: SCUBA Category A1 SCUBA Other SSE Dry diving bell / saturation
1.1 SCOPE OF THE WORKING CONDITIONS CATALOGUE WORKING UNDER HYPERBARIC CONDITIONS The Working Conditions Catalogue Working under Hyperbaric Conditions is according to the Working Conditions Act applicable:
1. On Dutch territory.
2. Within the boundary of the exclusive economic zone of the Netherlands. The boundaries coincide with: a. the boundary of the territorial sea of the Netherlands, referred to in Article 1, first paragraph, of the Dutch territorial sea boundaries; and b. the boundaries of the part of the continental shelf allocated to the Netherlands.
3. On sea going ships registered in the Netherlands.
This also applies to permanently installed platforms and FPSOs operating within the boundaries of the exclusive economic zone of the Netherlands.
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2 PARTIES WORKING CONDITIONS CATALOGUE WORKING UNDER HYPERBARIC CONDITIONS
CNV CNV Vakmensen
Defensie Ministerie van Defensie
NADO Nederlandse Associatie van Duikondernemingen
Nautilus Nautilus International /FNV
NDC Voormalig Nationaal Duikcentrum (tot 2014)
CvD CS College van Deskundigen Civiele Sector (na 2014)
NVB Nederlandse Vereniging van Beroepsduikers
NVD Nederlandse Vereniging van Dierentuinen
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Politie
Caissonsector
Nederlandse Vereniging voor Hyperbare NVvHG Geneeskunde
IFV Instituut Fysieke Veiligheid
Brandweer Nederland
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3 FREQUENTLY ASKED QUESTIONS AND ANSWERS
3.1 WHO IS THIS WORKING CONDITIONS CATALOGUE FOR? The Working Conditions Catalogue is specifically intended for employers and employees in the Sector Working under Hyperbaric Conditions, but also for the clients mentioned in the risk group: Duties, responsibilities and requirements.
Working under Hyperbaric Conditions definitions and applicability: Diving work: performing work in a liquid or in a dry diving bell including the stay in this liquid or in this dry diving bell, whereby for breathing use is made of a gas under a higher pressure than atmospheric pressure. Caisson work: performing work in a space under a pressure of at least 104 Pa above atmospheric pressure and wholly or partially is surrounded by a liquid including the stay in and the transportation to and from that space. Hyperbaric medicine work: performing work in a hyperbaric treatment chamber under a pressure of at least 104 Pa above atmospheric pressure. Other work under hyperbaric conditions: performing of other work than diving or caisson work in a space under a pressure of at least 104 Pa above atmospheric pressure, including the stay in that space.
3.2 WHAT IS A WORKING CONDITION CATALOGUE? A Working Condition Catalogue contains agreements regarding controlling of (specific) Health and Safety risks at sector-, branch - or company level. Social partners (employers and employees) agree together which way the requirements in the Working Conditions Act and legislation can be met. They provide practical solutions to meet the target requirements of the government. They choose themselves the form, content and distribution of the catalogue. In that way it is custom-made. The Working Conditions Catalogue replaces the statutory Working Conditions Policy Rules.
3.3 WHAT IS THE PURPOSE OF THE WORKING CONDITIONS CATALOGUE? The main purpose of this Working Conditions Catalogue is to provide employers and employees an as practicable as possible tool to improve working conditions at the work location.
3.4 WHAT CHANGES AS A RESULT OF THE WORKING CONDITIONS CATALOGUE FOR WORKING UNDER HYPERBARIC CONDITIONS? The working conditions policy does not change very much. The employer remains responsible for ensuring good working conditions, which at least meet the requirements of the Working Conditions Act and legislation. The employee is obliged during his activities at the work location, in accordance with his training and instructions given by the employer, to take care, to his best ability, of his own health and safety and that of other persons involved. This Working Conditions Catalogue contains solutions/measures to reduce risks.
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3.5 WHAT CAN AND MUST EMPLOYEES DO WITH THE WORKING CONDITIONS CATALOGUE? In the Catalogue the protection level for the risks have been defined. Employees can with the help of the Working Conditions Catalogue check themselves if the work location complies. On the other hand employees are also obliged to comply with the requirements in the Working Condition Catalogue. ”I did not know!” no longer applies.
3.6 IS IT COMPULSORY TO COMPLY WITH THE WORKING CONDITION CATALOGUE? The Inspection SZW inspects companies for compliance with the law and legislation, taking into account the solutions in the Working Conditions Catalogue. If you deviate from these solutions, you have to reach a level of health and safety which is at least as high as when you would have followed the Working Conditions Catalogue. The Inspection SZW will check this.
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4 WORKING CONDITIONS LEGISLATION, WORKING CONDITIONS CATALOGUE, CHANGES, VALIDITY AND MANAGEMENT
4.1 WORKING CONDITIONS CATALOGUE DOCUMENTS AND CHANGES As of 1 January, 2007, the Working Conditions Legislation has undergone a significant change. The most important change as of 1 January 2007 was a further increase of the responsibility of employers and employees by having the standards drawn up by private parties. The former National Diving Centre (NDC) has at that time managed the process to develop the Working Conditions Catalogue for the field of activity working under hyperbaric conditions. In 2010 the Working Condition Catalogue Working under Hyperbaric Conditions part: Diving work and part: Caisson work and other work under hyperbaric conditions was approved by the former Labour Inspectorate (Inspection SZW) and came into force for the field of activity. Since that time the Working Conditions Catalogue for working under hyperbaric conditions is available on the website www.ArbocatalogusWoO.nl .
2014 update Since the Working Conditions Catalogue fits seamlessly into the objectives of the Foundation Working under Hyperbaric Conditions (SWOD) the Working Conditions Catalogue management was transferred to SWOD in 2012. Mid 2013 a SWOD Project group started with the update of the Working Conditions Catalogue Working under Hyperbaric Conditions and developing the Working under Hyperbaric Conditions System- and Maintenance requirements (WOD-SOE) which forms part of the Working Conditions Catalogue. In spring 2014 this version of the Working Conditions Catalogue and the WOD-SOE was approved by Inspection SZW, whereupon this revised version came into force. The official publication in the Staatscourant took place on 18 August 2014, Staatscourant 23207.
2018 update End 2015 the SWOD Project group started again with a new update of the Working Conditions Catalogue Working under Hyperbaric condition for diving work and caisson work and also of the document Working under Hyperbaric Conditions System- and Maintenance requirements (WOD-SOE). On 20 March 2018 these versions were approved by the SWOD Central Committee of Experts (CCvD), following which these revised versions are in force from 1st October 2018.
2020 update In 2018 a start was made with another update of the Working Conditions Catalogue Diving work and WOD-SOE and two new information notes diving were developed These were approved by the SWOD Central Committee of Experts (CCvD) on 23rd June 2020 and are in force from 1st October 2020.
The changes in the 2020 update are amongst others:
Working Conditions Catalogue Diving A section on training for the use of SCUBA with Surface Air Supply (OLV), which may only be used by public authorities; Requirements regarding minimum information that a client must provide to a contractor; Additional requirements that must be taken into account during the Last Minute Risk Analysis (LMRA).
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WOD-SOE A definition for SCUBA with Surface Air Supply (OLV); Maintenance system, extension of the validity of certificates; Minimum system requirements for SCUBA with Surface Air Supply (OLV), which may only be used by public authorities; The minimum requirements divided into three separate sections SCUBA, Surface Supplied Equipment (SSE) and Saturation system diving activities and there is a reference to the relevant Detail sheets, which have been modified where necessary.
Information Notes diving Two information notes have been developed which contain extensive and detailed information on hazards and risk management of Pressure Differences (Delta P) and Work with a High Pressure Jetting Gun. These supplement the Risks and Minimum control measures mentioned in this Working Conditions Catalogue.(See also section 7 Information Notes diving)
4.2 VALIDITY The current Working Conditions Catalogue Working under Hyperbaric Conditions part: Diving work and the part: Caisson work and other work under hyperbaric conditions (version 2018 content is unchanged), WOD-SOE and information notes diving are in force from 1st October 2020.
The employers and employees have agreed when drawing up the first Working Conditions Catalogue that the Working Conditions Catalogue will be evaluated after periods of 3 years. It can then be looked at whether major changes have occurred regarding the work, or rules or working methods. And that may be a reason to adjust the contents of the Working Conditions Catalogue accordingly.
The employers and employees may jointly also decide that an interim update is necessary, such as on account of investigation results and recommendations after accidents during work under hyperbaric conditions. In addition the knowledge and technique evolve constantly, which also may lead to actualisation of the Working Conditions Catalogue.
Comments/ remarks documents In case you have points of improvements or recommendations regarding the Working Conditions Catalogue, WOD-SOE and information notes diving you are requested to inform SWOD. During the next actualisation these points can be discussed and be incorporated.
4.3 THE MANAGEMENT The Working Conditions Catalogue is managed by SWOD Central Committee of Experts (CCvD). The CCvD consists of representatives of the Fire Brigade, Civil sector and Defence. Jointly they will follow the developments in the field of activity working under hyperbaric conditions and when required change the Working Conditions Catalogue and have it approved by Inspection SZW when appropriate.
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5 EXPLANATION WORKING CONDITIONS CATALOGUE DIVING WORK DRY DIVING BELL/ SATURATION This section explains the terms, reference documents and abbreviations used in section 8 Working Conditions Catalogue Diving work Dry diving bell/ saturation.
5.1 ACTOR / SUBJECT The column Actor/Subject contains the subdivision of the described risks. The Project group Working Conditions Catalogue Working under Hyperbaric Conditions have elected for a subdivision used by IMCA in the International Code of Practice for Offshore Diving.
5.2 RISKS In the column Risks are all the risks which are relevant to an Actor/ Subject. Each risk is described in a concise as possible manner.
5.3 MINIMUM CONTROL MEASURE The minimum control measures which are described in the Working Condition Catalogue are the minimum measures an employer and employee must take in order to manage the associated risk. An employer is always permitted to take additional (more elaborate) measures.
5.4 REFERENCES / ABBREVIATIONS In the Working Conditions Catalogue references have been included where relevant control measure and / or the risk are further explained.
Hereby the following abbreviations have been used:
Abbreviation Reference / description abbreviation AB Working Conditions Decree. AR Working Conditions Regulations ATB Working Hours Decree ATW Working Hours Act AW Working Conditions Act ADC Association of Diving Contractors ADCI International Association of Offshore Diving Contractors. BHV In-house Emergency Service organisation CCvD Central Committee of Experts DMAC Diving Medical Advisory Committee. EHBO First Aid
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Abbreviation Reference / description abbreviation IMO International Maritime Organisation. IMCA International Marine Contractors Association. MaTR133 (HSE UK) Reference document Health and Safety Executive (United Kingdom) SWOD Foundation Working under Hyperbaric Conditions VCA Safety, Health and Environment Checklist Contractors Wet BIG Law on Professions in the Individual Health Care
5.5 TERMS / ABBREVIATIONS In the Working Conditions Catalogue Diving work Dry diving bell/ saturation also a number of terms/ abbreviations have been used of which the meaning is as follows:
Term / Abbreviation Description Caisson A structural construction which by means of excavation of the soil at the underside is moved to a deeper level or by means of immersion in open water is placed on the bottom (Ref. WOD-SOE) Caisson work Performing work in a space under a pressure of at least 104 Pa above atmospheric pressure and wholly or partially is surrounded by a liquid including the stay in and the transportation to and from that space (Ref. AB article 6.13) DP Dynamic Positioning. Diving work Performing work in a liquid or in a dry diving bell including the stay in this liquid or in this dry diving bell, whereby for breathing use is made of a gas under a higher pressure than atmospheric pressure (Ref. AB article 6.13) Diving work Category A Diving with SCUBA (Self Contained Underwater Breathing Apparatus). (Ref. AR article 6.5 ,paragraph 3 and Annex XVI c) Diving work Category B Diving with SSE (Surface Supply Equipment) air supply from the surface (Ref. AR article 6.5, paragraph 3 and Annex XVI c) Diving work Category C Diving with a closed diving bell and/ or saturation diving (Ref. AR article 6.5, paragraph 3 and Annex XVI c) Habitat A mobile work chamber underwater with open access underwater which can only be entered by means of diving (Ref. WOD-SOE) Manual Care system, quality manual HES Hyperbaric Evacuation System Hyperbaric treatment A permanently installed compression chamber in a hospital or medical chamber (2 or more institute, intended for treatment of patients under hyperbaric conditions in compartments) accordance with a treatment protocol prescribed by a physician. (Ref. WOD- SOE)
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Term / Abbreviation Description Hyperbaric treatment A treatment chamber (mono place) which does not comply with the WOD- chamber (1 SOE requirements as there is only one compartment present. As a result of compartment) this there is no direct access possible to a patient during treatment Hyperbaric facility A building with a hyperbaric treatment chamber, control panel, patients - , personnel - , breathing gas- and emergency facilities Hyperbaric medicine Treatment of patients in a hyperbaric treatment chamber with oxygen under hyperbaric conditions supervised by a qualified physician for treatment indications which have been evidence based substantiated or indications based on research findings in accordance with MEC Guidelines. MEC Medical Ethical Committee MSC Marine Safety Committee (IMO). NADO Netherlands Association of Diving Companies NDC Netherlands Diving Centre (till 2014) NEN-EN European standard which is accepted as a Dutch standard Other work under Performing of other work than diving or caisson work in a space under a hyperbaric conditions pressure of at least 104 Pa above atmospheric pressure, including the stay in that space. (Ref. AB article 6.13) RI&E Risk Assessment and Evaluation ROV Remotely Operated Vehicle. SCUBA Self Contained Underwater Breathing Apparatus. SCUBA with Surface Air SCUBA with for each diver also a separate high pressure air supply from the Supply (OLV) surface. This is not a substitute for SSE diving. SSE Surface Supplied Equipment. Work instruction (Diving) instruction, (diving) regulation, (diving) manual and work plan Work plan Specifically for a job, operational work plan
5.6 BASE MATERIAL The control measures in the Working Conditions Catalogue are amongst others based on: Current Working Conditions Act, Working Conditions Decree, Working Conditions Regulations, the former Working Conditions Policy Rules and the former the Assessment Guideline governing the Maintenance of Systems for Diving and Caisson Equipment (BRL D&C); IMO regarding vessels with a (DP) Dynamic Positioning System used for diving work; IMO regarding provisions for saving saturation divers in case these have to be evacuated from a vessel under hyperbaric conditions; Industry guidelines regarding diving work such as published by IMCA; Medical guidelines regarding diving work published by DMAC; NEN-EN 1493.
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6 WORKING UNDER HYPERBARIC CONDITIONS SYSTEM- AND MAINTENANCE REQUIREMENTS (WOD-SOE) The WOD-SOE is an integral part of the Working Conditions Catalogue Working under Hyperbaric Conditions and consists amongst others of: Maintenance system requirement (Chapter 3) Minimum system requirements (Chapter 4) Detail sheets which include minimum requirements for equipment when new and when in use (Chapter 5)
The System- and Maintenance requirements in the WOD-SOE have been established by the input of a wide group of experts from various sectors of the diving- and caisson industry, hyperbaric medicine, authorities and employers- and employee organisations. The “Assessment Guideline governing the Maintenance of Systems for Diving and Caisson Equipment, version 01 d.d.31 March 2006 (BRL D&C) has served as a basis of the WOD-SOE. Where applicable the requirements have been updated to the current technical and scientific developments.
In the Working Conditions Decree (Article 6.15 paragraph 1 sub b) is defined that when carrying out work under hyperbaric conditions sound equipment which is in a good condition shall be provided to the employees. In order to comply with the above mentioned article the equipment which is used during work under hyperbaric conditions must as a minimum comply with the System- and Maintenance requirements (WOD-SOE).
By complying with the requirements in the WOD-SOE, you as employer have taken measures that the employees are provided with sound material and that this material is in good condition. Working with sound material which is in a good condition together with requirements regarding personnel and risk management constitute the conditions which contribute to the safety of working under hyperbaric conditions.
Inspection SZW will when carrying out their inspection task also use the WOD-SOE as part of the legislation and regulations applicable for working under hyperbaric conditions and on the basis of these documents inspect and in case it is necessary enforce the law.
The WOD-SOE has been approved by the SWOD Central College of Experts (CCvD) on 23rd June 2020 and is in force from 1st October 2020. The document can be found at www.ArbocatalogusWoO.nl and can be downloaded as a PDF document.
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7 INFORMATION NOTES DIVING These contains extensive and detailed information about the risks and risk management of Pressure Differences (Delta P) and work with a High-Pressure Jetting Gun. These supplement the Risks and Minimum control measures mentioned in this Working Conditions Catalogue.
During the updating of the Working Conditions Catalogue Working under Hyperbaric Conditions, which has been in force since 1 October 2018, two information notes were also developed. These are Information Note diving No. 1 “Risks and control measures of Pressure Differences (Delta P)” and Diving Information Sheet No. 2 “Risks and control measures of Working with a High Pressure Jetting Gun”.
Both information notes are based on guidelines and information from the diving industry in various countries, as well as from the Dutch diving industry and employees' organisation.
The purpose of these information notes is to create awareness of possible risks present when diving with Pressure Differences (Delta P) and working with a High Pressure Jetting Gun.
By emphasizing the risks and providing guidelines on methods to assess and control these risks as well as possible, the risks of diving with Pressure Differences (Delta P) and work with a High Pressure Jetting gun can be reduced or even eliminated.
The information notes diving have been approved by the SWOD Central College of Experts (CCvD) on 23rd June 2020 and are in force from 1st October 2020. They can be found at www.ArbocatalogusWoO.nl and can be downloaded as a PDF document.
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8 WORKING CONDITIONS CATALOGUE DIVING WORK DRY DIVING BELL / SATURATION
8.1 DUTIES, RESPONSIBILITIES AND REQUIREMENTS
No. Actor/ Risks Minimum control measure Reference Subject 1.1 Employer
1.1.1 Work Work instruction Version control, list of changes, evaluation and
instruction not in line with maintenance (custodian/ secretary). the law and legislation and industry standard Work instruction Minimum contents: AB article 6.15
incomplete Responsibilities and authorities; paragraph 1a (unsound work Equipment and maintenance; (sound work instruction) Diving procedures, including; emergency instruction) procedures (See also: Emergency Procedures and Contingencies); IMO resolution The Standby diver deployment and A. 692(17) preparedness/ the level the standby diver Guidelines and needs to be dressed; Specifications Facilities and procedures for situations for Hyperbaric which deviate from commonly occurring Evacuation work situations; Systems Guidelines for decompression; Reporting accidents and medical assistance; Composition and use of the First Aid equipment; Team composition (size, qualifications and tasks and authorities). 1.1.2 Work Insufficient Availability of a RI&E (See also AW: article 5, situation assurance of a WORKPLANNING Risks and Minimum IMO Resolution safe work control measures); A.831 (19) situation Providing a safe and suitable work Code of Safety location; for Diving Recording of tasks and responsibilities of Systems, third parties. AW: article 19 1.1.3 Contents Work plan is Minimum contents of work plan: work plan incomplete Project specific Tasks, Responsibilities and Authorities; Project specific RI&E. 1.1.4 Physical Physical load Inventory of heavy material, provision of AB: Chapter 5 load information/ advice. Section 1
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1.2 Client/ third
parties
1.2.1 Information Providing Formal recording of tasks, responsibilities and AW: article 19 to the incomplete authorities of all parties concerned, for contractor information to example by means of a work permit system to the contractor avoid endangering the contractor. Informing about: AB 2.28 Safety 1. Soil and water pollution;. and Health plan 2. Hazards at the workplace, both above and under water, including possible risk of pressure differences (Delta P); 3. Other work that takes place on and near the work site that may pose a danger to diving personnel.
1.3 Diving Supervisor 1.3.1 Familiarity Insufficient Diving Supervisor shall be given sufficient time work familiar with the to become familiar with the work instruction instruction Work instruction and work plan. and work and the Work plan plan 1.3.2 Familiarity Insufficient Diving Supervisor shall be given sufficient time diving familiar with the to become familiar with the hyperbaric system system diving system / diving system being used. 1.3.3 Personnel Not suitable/ The diving supervisor is checking whether the trained/ diving team is suitable for the tasks the diving examined team is planned to execute and or the diving team is in possession of the correct and valid (diving) certificates and a valid medical examination. 1.3.4 Breathing Insufficient In case of emergency the diver shall be able to WOD-SOE gas quantity of make use of such a quantity of reserve Minimum breathing gas breathing gas which will allow him to abort the system during diving dive and to complete it in a safe manner. requirement Hereby use can be made of a checklist, check by the diving supervisor, reserve pressure AB 6.15 warning system (active or passive depending paragraph 1 b on the circumstances) and a dive planning/ dive worktime calculation. Working in accordance with the WOD-SOE. Insufficient Prior to the dive the dive supervisor needs to IMCA D 050 breathing gas check that the recommended minimum and/or oxygen to quantities of breathing gas and oxygen are be able to treat a present for the treatment of a diver with a diver with a decompression illness in the compression decompression chamber. illness in a compression chamber
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Incorrect Prior the dive the diving supervisor shall AB 6.15 breathing gas ensure that the correct breathing gas is used paragraph 1 b (See also DUTIES, RESPONSIBILITIES AND REQUIREMENTS item 1.1.5).
1.4 Divers 1.4.1 Familiarity Insufficient Divers must be sufficiently instructed, Proper AW: article 8, work plan familiar with the instruction (for example start work meeting / AB: article 6.15 work plan kick-off) and formal recording of tasks and responsibilities.
1.5 Diving assistant (Tender) 1.5.1 Familiarity Insufficient Proper instruction (for example start work AW: article 8, work familiar with the meeting/ kick-off) and formal recording of AB: article 6.15 activities work activities roles and responsibilities. under hyperbaric conditions and the associated tasks and responsibilities
1.6 Other supporting personnel 1.6.1 Familiarity Insufficient Proper instruction (for example start work AW: article 8, work familiar with the meeting/ kick-off) and formal recording of AB: article 6.15 activities work activities roles and responsibilities. under hyperbaric conditions and their associated tasks and responsibilities
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8.2 EQUIPMENT
No. Actor/ Risks Minimum control measure Reference Subject 2.1 Equipment Damaged Equipment management, checking by diver WOD-SOE general and and diving supervisor, working in accordance Maintenance Personal with WOD-SOE. system Protective requirements Equipment Not inspected Checking by or under the responsibility of the WOD-SOE diving supervisor, working in accordance with Detail sheets WOD-SOE. Unsound Checking by or under the responsibility of the WOD-SOE diving supervisor, working in accordance with - Detail Sheets WOD-SOE. - Minimum system requirements Prepared Checking by or under the responsibility of the WOD-SOE incorrectly and diving supervisor, working in accordance with - Maintenance or not working WOD-SOE. system requirements - Detail sheets - Minimum system requirements Non-compliance Working in accordance with WOD-SOE. WOD-SOE with the Minimum minimum system system requirements requirements IMO
2.2 Breathing gas Wrong Periodic inspecting installation and before use WOD-SOE breathing gas inspection of examination/testing report, Detail sheets quality working in accordance with WOD-SOE.
2.3 Transportation Incurring injury, The availability of a suitable device allowing WOD-SOE of a (wounded) damage diving the diver to safely enter and exit the liquid in Minimum diver to and equipment or which the diving work is carried out system from the delay The availability of a means to bring in case of requirements diving work an emergency a wounded or unconscious
location diver on deck and/ or ashore. Working in accordance WOD-SOE.
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No. Actor/ Risks Minimum control measure Reference Subject 2.4 Thread Incurring Check that the thread of the bottle is exactly NEN-EN 144-1 connection of damage and the same type as the thread of the valve. IMCA D 064 valve on diving injury of bottles personnel, possibly with fatalities, as a result of use of different types of thread on the bottle and the valve, as a result of which the valve by the pressure in the bottle may eject with great force out of the bottle. This can take place during maintenance and inspection of diving bottles
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8.3 PERSONNEL No. Actor/ Risks Minimum control measure Reference Subject 3.1 Qualification
and competence 3.1.1 Diver Not qualified Training, practice, competence verification and AW: article and/ or checking of certificates. 11, incompetent The diver must indicate that he is trained and AB: article diving competent for the work to be carried out. 6.14 and personnel 6.16, AR: Chapter 6 and Appendix XVI c Lack of The number of divers used with no or restricted practical practical experience shall be considered during experience or the work preparation phase. specific practical experience 3.1.2 Standby diver Too late ready When using a dry diving bell, the standby diver is AB: article to assist a diver located in the diving bell. In addition on the 6.16, in distress surface, there must also be a standby diver IMCA D 014 present, including material, who can assist within
the range of diving with breathing gas from the surface/ Surface Supplied Equipment (SSE). It is not necessary for this diver to be fully dressed. 3.1.3 Deck Incompetent Training, practice, competence verification in IMCA C002 crew/Riggers personnel accordance IMCA or equivalent by employer and AW: article 11 notification by the employee. 3.1.4 Life Support Not qualified Training, practice, competence verification in IMCA C003 Personnel and/ or accordance IMCA or equivalent by employer and AW: article 11 incompetent notification by the employee. personnel 3.1.5 Diving Incompetent Training, practice, competence verification in IMCA C003 Technician personnel accordance IMCA or equivalent by employer and AW: 11 notification by the employee.
3.1.6 Diving Not qualified Training, practice, competence verification and AW: article 11 Supervisor and/ or checking of certificates by the employer and AB: article incompetent notification by the employee. 6.14 and 6.16 diving AR: Chapter 6 personnel and Appendix XVI b
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No. Actor/ Risks Minimum control measure Reference Subject 3.1.7 Diving medical Not qualified 1. Training, practice, competence verification and AW: article 11 attendant and/ or checking of certificates and notification by the AB: article incompetent employee. 6.15 diving medical 2. For diving work in: paragraph 1c attendant Category A3, B2, B3 and B4 and C (not being (diving saturation diving) the diving medical attendant medical shall as a minimum be in possession of a attendant) certificate Diving Medical Attendant (MAD A, level AR: Chapter 6 WSCS-WOD-B-B2). and Appendix XVI d However in case of during diving work in circumstances where adequate medical care cannot be available quickly enough, the diving medical attendant shall as a minimum be in possession of a certificate Enhanced Diving Medical Attendant (MAD-B, level WSCS-WOD-B- B3). Note: Enhanced Diving Medical Attendant must be able to carry out certain medical reserved activities. In the Netherlands these come under the Law BIG.
To decide if the available medical care is adequate or available quickly enough shall be established by means of a RI&E.
Category C the diving medical attendant shall as a minimum be in possession of a certificate Enhanced Diving Medical Attendant (MAD B, level WSCS-WOD-B-B3). Note: Enhanced Diving Medical Attendant must be able to carry out certain medical reserved activities. In the Netherlands these come under the Law BIG. Not available Any dives made by the diving medical attendant
for attending must not impair his availability as diving medical hyperbaric attendant. treatment in the compression chamber
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No. Actor/ Risks Minimum control measure Reference Subject 3.1.8 Diving Not qualified A diving physician B or a diving physician A shall AB: article physician and/ or be in possession of a valid certificate which is 6.14 a incompetent applicable for the work he is going to perform, paragraph 1 diving taking in consideration: and physician paragraph 2 A diving physician A is only allowed to carry out AB: article periodical (renewal) examination of professional 6.14b divers. AB: article 6.15 A diving physician B is allowed to: paragraph 2 1. Perform the initial occupational health medical AR: Chapter 6 examination of persons required to carry out and Appendix diving work XVIa
2. Perform periodical (renewal) examination of professional divers.
3. Perform the occupational health medical examination of persons required to carry out diving work after the detection of a diver illness, such as decompression sickness, air embolism or disorders referred to as contra-indication (see table in 4.2) or after a diving-related accident.
4. To provide diving medical support.
5. To act as diving medical advisor.
3.2 Number of Too small team Minimum team size during diving is at all times in
personnel/ to get a diver in accordance with AB article 6.16 paragraph 1 (at team size distress out of least one diver, one standby diver and one diving a liquid and/ or supervisor). to mobilise in an adequate In case diving is carried out in the diving work manner Category A2 + A3 or Category B 0 - B4 no use may external be made of the deviation which is defined in AB assistance article 6.16 paragraph 4. Too small team Team size is determined by the nature of the
to be able to work, diving method and handling of potential execute the emergency situations. work in a safe Under the circumstances mentioned below there manner is a potential risk that the divers will get into difficulties, such as meant in AB article 6.16 paragraph 4: Standby diver cannot put on diving equipment by himself; Poor visibility, namely: at less than 1 meter persons or objects are not clearly visible; Impossibility to free ascend; Presence of obstructions;
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No. Actor/ Risks Minimum control measure Reference Subject Entering hollow spaces; Educating and training of divers with exception of the situation whereby at least two certified divers with diving equipment are in the water.
In case of Mining industry/ Energy generation related hyperbaric work the minimum team size is 5 persons (diving supervisor, diver, standby diver, diving assistant for the diver and a diving assistant for the standby diver).
3.3 Working Exhaustion and Working in accordance with the ATW and in case ATW periods/ times loss of of saturation diving, at least 12 hours of unbroken DMAC 20 concentration rest for the diver in every 24 hours. Bell runs from disconnection from to connection to the system are not allowed to exceed 8 hours. A diver is not allowed to be outside the diving bell for more than 6 hours.
3.4 Safety training Insufficient Sufficiently participating in safety trainings and VCA knowledge and practicing emergency procedures (See: BHV experience EMERGENCY PROCEDURES AND CONTINGENCIES) EHBO, etc.. with regard to associated with the work. safe working
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8.4 MEDICAL
No. Actor/ Risks Minimum control measure Reference Subject 4.1 Medical Incorrect 1. Oxygen kit is a necessary element of the first aid AB: article equipment composition of equipment. The quantity of available oxygen must 6.15 medical be sufficient for the travel time to the nearest paragraph equipment recompression facility (See EMERGENCY 1d (First aid PROCEDURES AND CONTINGENCIES point 6.3.1) or equipment) the time it takes till arrival of professional medical DMAC 15, assistance. DMAC 28
Diving medical attendant B2 (MAD-A. level WSCS-WOD-B-B2) minimum medical equipment: At the diving location without compression chamber: Oxygen kit; First aid kit as defined by the company medical department or complies with the "Orange Cross" guidelines for companies; Means to be able to make the diagnoses, such as: o stethoscope o reflex hammer o blood pressure measuring device o otoscope (battery operated) o refillable pencil torch o thermometer (electronic) (Suitable for hypothermia and fever) o tong depressors wood o tuning fork 512 Hz o emergency blanket.
During diving work where adequate medical care cannot be available quickly enough, as a minimum the following extra means need to be present at the diving location: Stretcher; AED.
At the diving location with compression chamber: The minimum medical equipment without compression chamber, complemented with in the compression chamber the following means: mouth wedge (for acute oxygen poisoning); a pressure resistant flashlight; writing material (pressure resistant).
Enhanced Diving Medical Attendant B3 (MAD-B, level WSCS-WOD-B-B3) minimum medical equipment: Based on guideline DMAC 15 and in consultation with the diving physician B.
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No. Actor/ Risks Minimum control measure Reference Subject
Saturation diving minimum medical equipment: 1. At the dive location. Based on guideline DMAC 15 and in consultation with the diving physician B. 2. In the diving bell. Based on guideline DMAC 15 and in consultation with the diving physician B. 3. In the hyperbaric lifeboat. Based on guideline DMAC 15 and in consultation with the diving physician B.
Facilities for medical treatment of divers in saturation. Facilities in the compression chamber. Based on guideline DMAC 28 and in consultation with the diving physician B.
4.2 Medical Use of Notification by the diver. AW: article examination medication, 11 and AB: / checks alcohol use and article 9.5 use of hallucinogenic drugs Physical Notification by the diver. AW: article condition 11 and AB: article 9.5 Mental Notification by diver. AW: article condition 11 and AB: article 9.5
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No. Actor/ Risks Minimum control measure Reference Subject No diver 1. Check diver logbook + notification by the diver. AW: article
medical 11 2. The examination prior commencement working under hyperbaric conditions shall be carried out by AB: article a Diving Physician B in a sufficiently equipped 6.14 centre to carry all aspects of the examination. Periodical renewal examinations, every twelve AR: months, may also be carried out by a Diving Appendix Physician A. XVI a, which forms part Following a diver illness such as decompression of Article sickness, air embolism or a disorder mentioned as 6.5 absolute contra-indication the medical examination paragraph shall take place by a physician with a certificate 1e Diving Physician B.
Regarding to the medical examination for persons carrying out diving work, caisson work and other work under hyperbaric conditions the following applies: A person who is required to carry out diving work, caisson work and other work under hyperbaric conditions: Shall without restrictions be able to carry out his work under hyperbaric conditions, under physical heavy circumstances be able to swim/ walk, communicate and be able to cope with the responsibility psychologically; May not endanger himself or another member of the team by a medical disorder during working under hyperbaric conditions such as loss of consciousness, loss of orientation or panic attack; May not have a disorder which as a result of working under hyperbaric conditions may worsen; May not have a disorder which may cause the development of a diver illness such as decompression illness or barotrauma.
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No. Actor/ Risks Minimum control measure Reference Subject At least the following aspects need to be examined:
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No. Actor/ Risks Minimum control measure Reference Subject
4.3 Liaison with No diving Agreement/ contract with diving physician in which AB: Article a suitable physician availability of the diving physician is recorded. 6.15 diving available paragraph 2 physician Non- Appropriate means of communication in relation to functioning the work location (inclusive back-up). means of communication
4.4 Medical and Physiologi- cal considera- tions 4.4.1 Diver checks Failure to Monitoring the health status of the diver. Possible observe ways are: video (ROV), voice communication and changes in the line signals. The RI&E will indicate which method health status of must be used. the diver
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No. Actor/ Risks Minimum control measure Reference Subject 4.4.2 Flying after Contract a Planning air travel in accordance with the diving decompression requirements in the decompression tables being sickness during used. flying after diving 4.4.3 Duration Chronic health Plan duration of saturation and atmospheric period DMAC 21 saturation problems in consultation with the physician concerned. and exposure ATW/ATB in the Mining sector (SODM scheme) 4.4.4 Divers out a Dehydration The diver should be given ample opportunity to dry diving drink. bell 4.4.5 Diving Primary diver Diving medical aspects of diving as described in the AR: medical sickness, textbook diving medical attendance for the relevant Appendix risks secondary category of diving work, briefing, presence of a XVI a, c and diver sickness, diving medial attendant and medical evacuation d other disorders plan, contact means and options with diving and physician, presence of a First Aid kit. decompression sickness Decompression Checking diver logbook + notification by diver AW: article
sickness (possibly recreational diving and diving at third 11 parties) and use of decompression tables, presence of a decompression chamber in accordance with AB: article 6.18.
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8.5 WORK PLANNING No. Actor/ Risks Minimum control measure Reference Subject 5.1 Risk Not described Periodic re-evaluation of the available AW: article. 5 Manageme or new risks RI&E; nt Process which are not Execution of a specific risk analysis for the managed diving project; The execution of a Last Minute Risk Assessment (LMRA) at the worksite by the diving supervisor and personnel prior to the diving operation taking place, in case of changed circumstances and after an incident, where by the work was stopped and near miss (Think hereby about “management of change”). Last Minute Risk Analysis (LMRA) check of the actual situation at the workplace and possible deviations from the project specific RI&E: 1. Work in the area that affects safety during diving work. 2. Divers/diving team suitable/ available for the work to be carried out. 3. Diving equipment and work equipment are suitable for the work to be carried out. 4. Sufficient breathing gas present and correct composition. 5. Safety and emergency equipment and arrangements in place, present and functional.
5.2 Operational
and Safety Aspects 5.2.1 Diving Not capable to A provision to allow the diver to remain at the depth remain at the desired water depth. desired water depth Diving method/ Comply with the limits in AR Appendix XVIc. AR: Appendix category/ Working in accordance the WOD-SOE XVI c equipment WOD-SOE unsuitable for minimum the diving depth system and or diving requirements work Use of incorrect Establish the diving depth. WOD-SOE decompression Facilities in accordance with the WOD-SOE. minimum table system requirements
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No. Actor/ Risks Minimum control measure Reference Subject Diving deeper Carry out additional RI&E with explicit attention WOD-SOE than 50 metres for quantity available breathing gas in case of a Minimum failure of the primary breathing gas supply, system the type of breathing gas used, decompression requirements tables used in case of emergency.
In case of Mining industry/ Energy generation related work under hyperbaric conditions a dry diving bell in accordance WOD-SOE. 5.2.2 Discharges Contaminated Closing of discharge or keep a safe distance, in
water (thermal case of pollution. and/or (See Work PLANNING item 5.3.2. chemical), uncontrolled “blowing away” of the diver
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No. Actor/ Risks Minimum control measure Reference Subject 5.2.3 Dangers of Divers, diving Remove any pressure difference or ensure that Association of differential supervisors and it cannot occur. Diving pressure other personnel Contractors (Delta P) involved are not Performing and recording of a detailed RI&E International able to with a project manager and client familiar with (ADCI) video on Amongst recognize and/ the relevant location and drawing up a work the dangers of others, but or are unaware plan. differential not limited of the presence (See also WORK PLANNING 5.1 Risk pressure: to: of the hazards Management Process) Dams, http://videos.a Dikes, Before commencing the work: Check with the dc- Locks, project manager and the client, familiar with int.org/dangers Weirs/ the location concerned, whether all safety -of-delta-p barriers, measures laid down in the work plan have been Water taken and record this. http://videos.a reservoirs, dc- Swimming In case of changes of the work plan or work int.org/expand pools and situation: Carry out again the RI&E with the ed-approach- Drains project manager and the client and record this to-calculating- in an amended work plan. the-effects-of- Ships, (Management of change). differential- pipelines pressure-delta- and other Avoid the risk of getting stuck or trapped. Do hollow not allow a diver to approach from the p-on-working- construction upstream side with a visible or invisible flow divers s due to pressure difference. Only approach from the downstream side if possible. UK Health Hydroelectri &Safety c power Discuss with the diving team and other Executive stations, personnel involved the risk for any potential (UKHSE) Desalination hazard at the site. Diving plants and Information intakes of Performing a Last Minute Risk Analysis (LMRA). Sheet No. 13 other plants Differential Discuss the emergency scenarios and the pressure actions to be taken should unexpected events occur. hazards in diving Provide all personnel involved with the necessary information to ensure the work is UKHSE research carried out safely. report: RR761 - If the failure of a (temporary) construction is Differential part of the risk, the integrity of the (temporary) pressure construction must be part of the RI&E. hazards in diving Use the reference table "annex F" in the HSE document RR 761 to see if foreseeable Video produced circumstances may take place whereby the by the Ontario extent of a pressure difference danger zone may increase or the estimated forces may Ministry of exceed the accepted values. Labour, this
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Entrapment of Ask yourself if you need to dive or if there are video talks
the diver and / alternatives. about the or standby diver hazards of and possible Check whether control measures are effective Delta P around injury or death before the diver enters the water. dams (Courtesy Ontario Use SSE to perform this work or other diving Ministry of method after making a detailed RI&E. Labour. 2011)
Use pre-installed means to prevent suction due https://www.yo to pressure differences. utube.com/wat ch?v=7yEmC-z- Prevent a diver from can come in the danger dRU zone by using a cage and / or limiting the diving umbilical or signal line length. ADC-GP-01 Diving From, Use where possible extra or double fitted gates On or in Close or valves. Proximity to
Do not allow the diver to work on a seal which Merchant must prevent an outflow at that moment. Vessels – Protocol for Take control measures when pipes with Isolating pressure differences are made open. Machinery Systems (ADC UK website or IMCA Information Note 13/09)
ADC-GP-02 Identification, Assessment and control of differential pressure hazards (ADC UK website)
For extensive and detailed information about risks and risk management see Information Note Diving nr. 1
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No. Actor/ Risks Minimum control measure Reference Subject 5.2.4 Diving near Accidental Direct contact between diving supervisor and IMCA D 045 ROV contact with the ROV supervisor. IMCA R 004 operations ROV ROV video picture available to the diving IMCA D 054 supervisor. Thruster guards fitted to ROV thrusters. 5.2.5 Safe use of Incur electrical Approach a specialist for minimum control IMCA D 045 electricity shock measure. and IMCA R 004 5.2.6 Use High Dive- and deck The employer must ensure that the personnel AW. 8 pressure personnel not is trained for the use of a high pressure jetting jetting gun trained to work gun. For extensive with an with the high and detailed operating pressure jetting information pressure gun about risks higher than and risk 250 Bar or management when the pump see power is Information more than Note Diving 10kW at an nr. 2 operating pressure higher than 25 bar Injury of diver The length of the jetting gun is such that the IMCA D 049 by high pressure diver cannot injure himself and is at least 75 jetting gun centimetres. If less than 75 centimetres than two hands activation of the jetting gun. The jetting gun must never be shorter than 50 centimetres.
The end of the jetting gun must be equipped with an end jetting gun marking. This can be a ring around the jetting gun so that the diver can feel that his hand is close to the end of the jetting gun.
Wear protective clothing, footwear and gloves.
Exhaust retro jet water speed such that it cannot cause injury to the diver.
Retro jet venturi must be shielded in such a way that the diver cannot be injured.
Retro jet to be secured so that it cannot become detached.
Protection of the trigger mechanism
No locking of the trigger mechanism
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No. Actor/ Risks Minimum control measure Reference Subject
High pressure pump only starting when the diver is ready and the diver has requested to do so.
First aid card present with all information about first aid in case of high pressure jetting gun injuries and treatment of high pressure jetting gun injuries.
Have available contact numbers from experienced physician (s) in treating wounds caused by a high pressure jetting gun which is (are) available 24 hours a day. Mention on the first aid card. Uncontrolled of Depending on the water depth use a hose reel. IMCA D 049
lowering of the high pressure Pay out the hose in a correct way such that the hose diver is not negatively influenced by a too long or too short hose. Incorrect / not Inspection of equipment before use. IMCA D 049
inspected AB 7 equipment At least 1 time per year examination and NEN-EN 1829 testing by a specialised company, independent competent person or organisation with proven specific knowledge in the relevant areas with access to the necessary test facilities.
Depending on the use and condition, have it examined and tested more regularly. Communication Only work with clear audible communication or IMCA D 049
another suitable method.
Presence of an emergency stop next to the person who operates the pump. He must be in direct or immediate contact with the diving supervisor.
Use a head mounted camera when there is sufficient visibility. Hearing damage Diver use hard diving helmet with inner lining IMCA D 049
diver and deck and if necessary suitable hearing protection. personnel Disturbance of Inform the bridge before the start of high IMCA D 049 the positioning pressure injection operations. system of a Dynamic Positioned (DP) vessel
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No. Actor/ Risks Minimum control measure Reference Subject Injury to divers Keep minimal 5 meters away from high-
working in the pressure jetting operations. vicinity of work with a high pressure jetting gun 5.2.7 Lift bag Uncontrolled Measures to prevent uncontrolled ascent, for IMCA D016 ascent of the example by anchoring the load, an automatic WOD-SOE “load” whereby dump. Detail sheets the diver is Working in accordance WOD-SOE. dragged along with it Following Preferably make use of a closed lift bag. IMCA D016
ascent again
uncontrolled descent of the load 5.2.8 Cutting Breaking and/or Use of dry disks (not previously exposed to
disks fragmentation water). during use (around flying fragments) 5.2.9 Cutting and Explosion Ensure the direct discharge of gases/ prevent IMCA D 003 Burning caused by accumulation of gases (for example make OGP Report accumulating preventive holes, working from top to bottom). 471 gases Getting trapped Make a cutting plan and securing of structural
underneath cut components which need to be cut. structural components Cutting in body Adequate instruction, training, familiarisation. parts and/ or equipment 5.2.10 Diving from Unplanned loss In case of DP vessels at least an IMO equipment IMCA D 010 and/ or on of position class 2, and working in accordance with IMCA D IMO MSC/ DP vessels resulting in an 010. Circ.645 or floating uncontrolled In case of mechanical anchoring (spud poles, Guidelines for structures movement anchors and/ or ropes) an anchoring system vessels with (horizontal or such that the vessel remains stationary. dynamic vertical) of the positioning diver systems Undesired Switching off and securing of propulsion units, contact in case of diving operations from DP vessels between diver working in accordance with IMCA D 010. and propulsion units (such as: propellers, rudders, thrusters, jets)
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No. Actor/ Risks Minimum control measure Reference Subject 5.2.11 Working Self-ignition / The percentage of oxygen in a compression WOD-SOE with Oxygen explosion chamber and other enclosed (control rooms, Minimum enriched hazard and fire accommodation-, living- or work-) spaces shall system mixtures acceleration in a not come above 23%. requirements and Oxygen compression in chamber and compressio other enclosed n chambers spaces by high and other oxygen enclosed percentage spaces Fire in the Fire can be caused by static electricity and dirty
compression greasy clothing and footwear and can easily chamber due to ignite especially under hyperbaric conditions incorrect / dirty and with an increased oxygen percentage. greasy clothing and footwear Use clean grease-free clothing. Fire in the 1. Draw up a list which substances and A European
compression equipment are prohibited in the compression Code of Good chamber due to chamber and inform people about this. Practice for the use of Prohibited substances and equipment are Hyperbaric prohibited materials that can cause fire or an explosion Oxygen substances and under hyperbaric conditions, which get Therapy Annex equipment damaged under hyperbaric conditions and 7 cleaning agents and paint that are a health hazard under hyperbaric conditions. 2. Check that no prohibited materials are taken into the compression chamber. 5.2.12 Working In systems 1. Applied materials and equipment for the use
with oxygen which are used of oxygen with a percentage between 25 - 40% enriched with breathing must be cleaned of visible dirt, grease and oils. breathing gases 2. Use of oxygen compatible lubricants. gasses containing an 3. Taking into account manufacturer's oxygen guidelines. percentage between 25% and 40% explosion and fire hazard due to presence of grease and oils
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No. Actor/ Risks Minimum control measure Reference Subject In systems 1. The materials and equipment used must be WOD-SOE
which are used suitable for use of oxygen percentage of 40% Minimum with breathing and higher in accordance with requirements in system gases the WOD-SOE. requirements containing an 2. The materials and equipment used are IMCA D 031 oxygen oxygen cleaned and remain oxygen clean. For percentage of oxygen clean, the smallest traces of 40% and higher hydrocarbons and contaminants must be explosion and removed and this must be confirmed by an fire hazard due inspection by a competent person. to use of unsuitable materials and due to presence grease and oils 5.2.13 Oxygen Unwanted Helium storage cylinders must contain a AODC 038 level in supply of minimum percentage of oxygen. Pure helium helium helium to the must be available as calibration gas only. diver 5.2.14 Length of Standby diver The umbilical of the standby diver must be of the cannot reach such a length that the standby diver can safely umbilical diver in distress reach the diver. due to a too short umbilical Insufficient Available quantity breathing gas to correspond WOD-SOE reserve with umbilical length. Minimum breathing gas in Working in accordance with WOD-SOE. system bail-out requirements Longer umbilical Planning of the shortest possible route from increases the the point of tendering of the umbilical to the chance of work location (aim for a short as possible fouling/ umbilical). snagging Longer umbilical Planning of the shortest possible route from makes reaching the point of tendering of the umbilical to the the diver by the work location (aim for a short as possible standby diver umbilical). more difficult 5.2.15 Transfer Undesirable Always keep the doors closed, except when under pressure loss divers are passing through them. pressure when coupling system 5.2.16 Underwater Getting If possible and necessary removal, exploratory obstructions entangled dive. Include in a specific work plan. Consult available data regarding the diving location. Damage to If possible and necessary removal, exploratory diving dive. Include in a specific work plan. equipment Consult available data regarding the diving location.
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No. Actor/ Risks Minimum control measure Reference Subject 5.2.17 Lifting and Diver/ diving Scaffolding and lifting on platforms and work scaffolding equipment is locations near diving work not simultaneously struck by to take place. falling/ moving Physical separation of scaffolding, lifting- and objects and/ or diving work such that falling/ moving objects become under no circumstances can hit/ trap a diver/ trapped diving equipment. 5.2.18 Diving in the Injury as a result During testing divers have to be away from of vicinity of of overpressure the pipeline. When working on damaged pipelines reactions (for pipelines, pressure reduction. example during testing or damage) Injuries caused Keep sufficient distance. by heat Diving in See WORK PLANNING 5.3.2. contaminated water (leakage of the contents) 5.2.19 Diving on Getting trapped If possible use a diffuser. Availability of depressuris by negative pressure equalising measures (for example an ed or empty pressure emergency valve to quickly remove the pipelines, negative pressure). hoses and subsea con- structions 5.2.20 Diving on Injury resulting Putting in place safety barriers. wellheads from and subsea overpressure facilities reactions Diving in See WORK PLANNING 5.3.2. contaminated water (leakage of the contents) 5.2.21 Cathodic Incurring Switching off system, subject to voltage and IMCA D 045 protection electrical shock distance to the diver. 5.2.22 Diving near Injury as a result In advance define the risk area and stay outside flare of heat and of it. fallout 5.2.23 Drilling- and Injury Relevant and adequate RI&E of the substance injection used to achieve an effective protection fluids and measure (such as appropriate protective construction clothing) (See WORK PLANNING 5.3.2). materials such as concrete, clay, bentonite Damage to More intensive inspection of diving equipment, diving corrective and preventive maintenance. equipment
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No. Actor/ Risks Minimum control measure Reference Subject 5.2.24 (Chain) Brake system Maintenance based on underwater use. IMCA D 028 hoists failure resulting in uncontrolled load movement, with the risk of injury to the diver 5.2.25 Seismic Injury Seismic operations, sonar transmissions and DMAC 06 and operations, piling operations not to be carried out DMAC 012 sonar simultaneously with diving work or maintain transmissio minimum distances based on the (transmission) ns and piling power being used.
5.3 Considera-
tions air, weather and sea conditions 5.3.1 Underwater Poor visibility, Specific work instruction.
visibility insufficient overview of the work location 5.3.2 Air-, water- Adverse health Inspection in advance, work instruction, work IMCA D 021 and soil effects plan, RI&E and clothing precautions, hereby pollution attention for biological agents, hazardous substances and chemicals, not only for the diver but also for the other team members (think hereby for example about the diving bell, possibly equip with gas detection equipment), personnel on deck and ashore). 5.3.3 Current/ Adverse impact Include as a specific point of attention in the
tides on reaching and RI&E. staying at the work location 5.3.4 Wave Influencing in Working in accordance with the limits set out in
height water the diving tables. decompression Injury and or Description of the limit which is based on the
damage when equipment being used and the location where getting in and the diving takes place. out of the water by the diver Equipment Description of the limit which is based on the
moving on deck equipment being used and the location where the diving takes place. Influencing Description of the limit which is based on the
lifting work equipment being used and the location where the diving takes place. 5.3.5 Weather
conditions
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No. Actor/ Risks Minimum control measure Reference Subject Precipita- Cold, humidity, Protective clothing.
tion slippery Wind Wind chill, Generic description of the limit which is based
reduced on the equipment being used and the location stability of where the diving takes place. people and objects Thunder- Lightning strike Setting of a situation dependent limit regarding
storm the minimum distance to the thunderstorm. Darkness insufficient Lighting.
overview of the work location Reduced insufficient Setting of a limit, the work area of the diver
visibility overview of the must always be visible and in case of shipping (above work location set a situation dependant limit. water) Tempera- Hypothermia 1. Specific work instruction regarding the work
ture and duration, clothing, shelter, conditioned work overheating/ environment, diver and also other personnel heat stroke 2. Ways to maintain the body temperature of the diver in thermal balance. 5.3.6 Ice Dysfunction of In case of freezing discontinue diving operation,
diving establish a specific work instruction. equipment as a result of freezing Ice formation (Support) equipment must be designed for ice
resulting in formation. increase of weight 5.3.7 Hazardous Personal injury Protective clothing and a specific work
marine life instruction.
5.4 Communica tions 5.4.1 Communica Emergence of Agree and remain in contact with third parties/ tion with dangerous bystanders, marking of the dive location and third parties situations such show the prescribed signals. / as: collision, bystanders, being run down, such as falling loads, shipping, getting trapped, deck be sucked personnel, against or operators, getting stuck, crane etc. drivers
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No. Actor/ Risks Minimum control measure Reference Subject 5.4.2 Miscommun Uncertainty In advance agree language to be used. ication about Recording of communication procedure in the instructions work instruction. diving supervisor versus diver
5.5 Diving from Not being Performing of an additional RI&E when diving IMCA D014, vessels, optimally from non-purpose built diving vessels, fixed Section 7.6 fixed equipped of ad- platforms or floating structures. platforms or hoc used This is specifically to establish the limitations floating vessels, fixed regarding execution of diving operations from installations platforms and the above mentioned work locations. floating structures for the safe execution of diving work
5.6 Diving from Suffer injury, as Diving from vessels making way shall be a vessel a result of avoided. See also WORK PLANNING 5.2.10 under rotating/ power and moving parts of making way the vessel
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8.6 EMERGENCY PROCEDURES AND CONTINGENCIES No. Actor/ Risks Minimum control measure Reference Subject 6.1 Diving emergencies 6.1.1 Loss of Increased risk Abort the dive. WOD-SOE communication of accidents Working conform WOD-SOE. Minimum system requirements 6.1.2 Diver in Increased risk Abort the dive, provide assistance including distress of personal deployment of the standby diver and injury implementation of the agreed emergency procedure. 6.1.3 Dealing with an Risk of Inclusion of this emergency procedure in the injured or (additional) work instruction. unconscious injury, diver drowning 6.1.4 Non- Increased risk Abort the dive and implement agreed functioning or of accidents emergency procedure. defective and personal equipment injury 6.1.5 Fire in and/ or Injury, Compression chamber in accordance with the WOD-SOE around the decompression requirements in the WOD-SOE, firefighting Minimum compression sickness procedures and procedures in which explicit system chamber or the focus on dealing with forced decompression requirements compression because of an evacuation. facility
6.2 Dry diving bell Death of divers Working in accordance with the WOD-SOE, WOD-SOE of which the carrying out emergency procedure to locate Minimum lifting wires and rescue the diving bell. system and/ or requirements, umbilical are Detail sheets damaged or IMCA D 014 broken section 9
6.3 Habitat/ Death of divers Procedures and provisions for survival in the IMCA D 014 underwater habitat of trapped divers for at least 48 hours. section 9 dry working Procedures to rescue divers out of the habitat space within 48 hours.
6.4 Hyperbaric evacuation of divers from the saturation system because of an emergency situation such as fire or sinking ship / platform
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No. Actor/ Risks Minimum control measure Reference Subject 6.4.1 Evacuation Decompression At least having available: IMO Resolution saturation sickness. 1. Evacuation procedures. A.692(17) divers with a Death of 2. Procedures and means to safely complete WOD-SOE hyperbaric divers. decompression after the evacuation. Minimum evacuation 3. A 'hyperbaric evacuation system' HES in system system accordance with IMO guidelines and requirements, specifications for hyperbaric evacuation IMCA D 051 systems, IMCA guidelines and WOD-SOE. IMCA D 052 IMCA D 014 section 8
6.5 Diving Inability to deal The availability of a room equipped with contractor adequately sufficient communication facilities, relevant contingency with documentation and other necessary facilities centre emergencies for the supporting/ coordinating team that is which may deployed in case of an emergency. occur
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9 REFERENCES WORKING CONDITIONS CATALOGUE DIVING WORK SSE
9.1 LAW
9.1.1 Working Condition Legislation/ Working Conditions Act (AW) The Working Conditions Act itself contains no articles that specifically deal with hyperbaric conditions or diving work. However the Act does contain general articles which focus on safety, health and welfare. Important articles in the context of diving work are amongst others: Inventory and evaluation of risks: article 5 Information and training: article 8 Reporting accidents and occupational diseases: article 9 General obligations of the employees: article 11 Occupational health medical examination: article 18 Multiple employers: article 19 Certification: article 20 See www.wetten.overheid.nl/BWBR0010346 (An English Translation of the Working Conditions Act can be found on the OSHA European website http://osha.europa.eu/fop/netherlands/en/legislation/index_html)
9.1.2 Working Conditions Decree (AB) The Working Conditions Decree does contain specific requirements in relation to working under hyperbaric conditions and diving work. In Chapter 6 (physical factors), section 5 (working under hyperbaric conditions) those requirements can be found. Important requirements in relation to diving work are: Physical load: Chapter 5 Section 1 Definitions and Applicability: article 6.13 Suitability: article 6.14 Occupational Health medical examination: article 6.14a Diving physician: article 6.14b Safety Measures: article 6.15 Certification of maintenance system for diving and caisson equipment: article 6.15a ( withdrawn in view of WOD-SOE) Diving work: article 6.16 Reporting diving work: article 6.17 Compression chamber diving work: article 6.18 Diving work of pupils and students: article 6.31 See www.wetten.overheid.nl/BWBR0008498 (An English Translation of the Working Conditions Decree can be found on the OSHA European website http://osha.europa.eu/fop/netherlands/en/legislation/index_html)
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9.1.3 Working Conditions Decree and Self-employed persons (ZZP-ers) Article 9.5 of the Working Conditions Decree describes the obligations of self- employed persons and co-operating employers. In this Article 9.5 is indicated that nearly all requirements of the Working Conditions Decree in relation to diving work are applicable. The relevant articles are: 6.14a, 6.15a, 6.16, 6.17 and 6.18. See also the publication of Inspection SZW "ZZP-er en de Arbowet"
9.1.4 Working Conditions Regulations (AR) Also in the Working Conditions Regulations articles can be found which relate to diving work. The regulations provide further details regarding the articles in the Working Conditions Decree. The following articles relate to diving physicians, divers, diving supervisors and diving medical attendant/ diver medic. See Chapter 6 Work under hyperbaric conditions * Certification: Section 6.1 * Certification: diver, diving supervisor, diving medical attendant and diving physicians: Section 6.5 * Certification: Fire brigade diver Fire Brigade diving supervisor: Section 6.6 See http://wetten.overheid.nl/BWBR0008587 (An English Translation of the Working Conditions Regulations can be found on the OSHA European website http://osha.europa.eu/fop/netherlands/en/legislation/index_html)
9.1.5 Working times legislation The Working Times Act provides rules regarding maximum working hours and minimum rest periods. The Working Times Act does however make exceptions for Defence, Fire Brigade, Supervisory and (special) Investigative services. For divers working in the mining industry in addition to the normal rules of the Working Times Act and – Decree further rules are applicable. Zie publication of the Ministry of SZW regarding Working Hours Act in Dutch Zie pubication of the Ministry of SZW regarding Working Hours Act in English
See also the information of our government on the website of Inspection SZW. https://www.inspectorateszw.nl/topics/working-hours-and-rest-breaks
9.2 WORKING TIMES IN THE MINING SECTOR The Working times Act (hereafter called ATW) is the basic legislation for working hours. Working hours and rest periods, as laid down in the ATW, do not always allow sufficient scope for all sectors to conduct their business effectively. Mining is one of those sectors for which additional and different regulations are required. Therefore the Working Times Decree (hereafter called ATB) contains additional and different rules for employees who perform work on or from a mining installation (an at sea or surface water located drilling or production platform) or an onshore mining location. Also for divers who carry out work for the mining sector additional and different rules are contained in the ATB. When applying the rules of the ATB, it must be remembered that the regulations of the ATW which
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are not explicitly deviated from in the ATB remain applicable. Furthermore, for some work a choice may be made between the working times scheme of the ATW and that of the ATB.
Collective scheme NADO, NVB, CNV and FNV Bondgenoten Since April 2007 the ATW legislation has been changed on a number of points in order to respond to the wish to create more flexibility. The ATW no longer has a standard and consultation scheme. There is now a (principal) norm which may be deviated from in a collective scheme. At companies where nothing has been agreed the principal norm will apply. It is only possible to deviate from the principal norm by means of collective agreements between the employer and employees. In that case, the more flexible norm of the collective scheme will apply. In April 2008 the branch organisation NADO (Netherlands Association of Diving Companies), the NVB (Netherlands Association of Professional divers), CNV and FNV signed a collective agreement so the more flexible norm of the collective scheme is applicable to them. Download the publication van Staatstoezicht op de Mijnen
9.2.1 Decree medical devices http://wetten.overheid.nl/BWBR0007307
9.2.2 In-house Emergency Service organisation (BHV) https://www.arboportaal.nl/onderwerpen/bedrijfshulpverlening
9.2.3 Law on professions in the individual Health Care (Act BIG)) http://wetten.overheid.nl/BWBR0006251
9.3 DOCUMENT WORKING UNDER HYPERBARIC CONDITION SYSTEM- AND MAINTENANCE REQUIREMENTS See our website for downloading the PDF Document www.ArbocatalogusWoO.nl. Also available in English.
9.4 DIVING WORK GUIDELINES / STANDARDS DMAC Diving Medical Advisory Committee http://www.dmac-diving.org DMAC 06 The effects of sonar transmission on commercial diving activities DMAC 12 Safe diving distance from seismic surveying operations DMAC 15 Medical equipment to be held at the site of an offshore diving operation DMAC 20 Duration of bell lock-outs DMAC 21 Guidance on the duration of saturation exposures and surface intervals between saturations DMAC 28 The provision of emergency medical care for divers in saturation
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HSE The Health and Safety Executive http://www.hse.gov.uk http://pilot.ndc.nl/images/pdf/HSE-MaTR133-Investigations-into-the-damage-caused.pdf
IMCA – IMCA Marine Contractors Association http://www.imca-int.com/ IMCA Diving IMCA D 003 Guidelines for oxy-arc cutting IMCA D 010 Diving operations from vessels operating in dynamically positioned mode IMCA D 014 IMCA International Code of Practice for Offshore Diving IMCA D 016 Underwater air lift bags IMCA D 021 Diving in contaminated waters IMCA D 028 Guidance on the use of Chain lever hoists in the offshore environment IMCA D 031 Cleaning for oxygen service: Setting up facilities and procedures IMCA D 045 Code of practice for the safe use of electricity underwater IMCA D 049 Code of Practice for the use of high pressure jetting equipment by divers IMCA D 050 Minimum quantities of gas required offshore IMCA D 051 Hyperbaric evacuation systems (HES) interface recommendations IMCA D 052 Guidance on hyperbaric evacuation systems IMCAD 054 Remotely operated vehicle intervention during diving operations IMCA D 064 Guidance on Diving Cylinder and Valve Compatibility
AODC 038 Guidance note on the use of inert gases
IMCA Remote Systems and ROV IMCA R 004 Code of Practice for the Safe & Efficient Operation of Remotely Operated Vehicles
IMCA Marine IMO 113 (IMO MSC Circular 645 ) Guidelines for vessels with dynamic positioning systems
IMCA Competence & Training IMCA C 002 Competence assurance and assessment - Guidance document and competence tables: Marine Division IMCA C 003 Competence assurance and assessment - Guidance document and competence tables: Diving Division
IOGP – International Association of Oil & Gas Procedures https://www.iogp.org//?s=publications IOGP Report 471 Oxy-Arc Underwater Cutting Recommended Practice
IMO International Maritime Organization www.imo.org IMO RESOLUTIONS http://www.imo.org/en/KnowledgeCentre/IndexofIMOResolutions/Pages/Default.aspx
IMO MSC / circ. 645 Guidelines for vessels with dynamic positioning systems (See IMCA Marine Division IMO 113)
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IMO resolution A.692(17) Guidelines and specifications for hyperbaric evacuation systems IMO resolution A.831(19) Code of Safety for Diving Systems
NEN Normen NEN Normen zijn verkrijgbaar bij het Nederlands Normalisatie-instituut (NNI). Voor meer informatie. www.nen.nl NEN Normshop http://www.nen.nl/web/Normshop.htm NEN-EN 12021:1999 en “Ademhalingsbeschermingsmiddelen - Perslucht voor ademhalingstoestellen” NEN-EN 144-1 Ademhalingsbeschermingsmiddelen - Afsluiters voor gasflessen - Deel 1: Verbindingen voor inlaataansluitingen. NEN-EN 1829-1 Hogedrukreinigers met een waterstraal - Veiligheidseisen - Deel 1: Machines. NEN-EN 1829-2 Hogedrukspuitmachines - Veiligheidseisen - Deel 2: Slangen, slangverbindingen en verbindingselementen
VCA - Safety, Health and Environment Checklist Contractors http://www.vca.nl/
9.5 DELTA P ADCI Association of Diving Contractors International (ADCI) video on the dangers of differential pressure: http://videos.adc-int.org/dangers-of-delta-p http://videos.adc-int.org/expanded-approach-to-calculating-the-effects-of-differential-pressure-delta- p-on-working-divers
UK Health &Safety Executive (UK HSE) http://www.hse.gov.uk/pubns/diveindx.htm Diving Information Sheet No. 13: Differential pressure hazards in diving
UKHSE research report: RR761 - Differential pressure hazards in diving http://www.hse.gov.uk/research/rrhtm/rr761.htm
Ontario Ministry of Labour Video produced by the Ontario Ministry of Labour, this video talks about the hazards of Delta P around dams (Courtesy Ontario Ministry of Labour. 2011 https://www.youtube.com/watch?v=7yEmC-z-dRU
ADC ADC-GP-01 Diving From, On or in Close Proximity to Merchant Vessels – Protocol for Isolating Machinery Systems (ADC UK website or IMCA Information Note 13/09)
ADC-GP-02 Identification, Assessment and control of differential pressure hazards.
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