Part 7: Surveys RULES FOR BUILDING AND CLASSING MOBILE OFFSHORE DRILLING UNITS 2016 PART 7 SURVEYS American Bureau of Shipping Incorporated by Act of Legislature of the State of New York 1862 Copyright 2015 American Bureau of Shipping ABS Plaza 16855 Northchase Drive Houston, TX 77060 USA Rule Change Notice (201 6 ) Rule Change Notice (2016) The effective date of each technical change since 1993 is shown in parenthesis at the end of the subsection/paragraph titles within the text of each Part. Unless a particular date and month are shown, the years in parentheses refer to the following effective dates: (2000) and after 1 January 2000 (and subsequent years) (1996) 9 May 1996 (1999) 12 May 1999 (1995) 15 May 1995 (1998) 13 May 1998 (1994) 9 May 1994 (1997) 19 May 1997 (1993) 11 May 1993 Listing by Effective Dates of Changes from the 2015 Rules The reference date which is indicated in the parentheses following the title of the requirement in this Part is the date that the requirement becomes effective [e.g., 7-1-4/41.5 “Hydrostatic Tests of Shell Valves” (2016) is to apply for vessels undergoing survey on or after 1 January 2016]. EFFECTIVE DATE 1 January 2016 – shown as (2016) Part/Para. No. Title/Subject Status/Remarks 7-1-4/41.5 Hydrostatic Tests of Shell Valves To align the requirements with 6-1-6/7.3.1 of the MODU Rules and 4-6-2/7.3.2 of the Steel Vessel Rules. 7-1-7/13.1 Installation of Loop-Seal and Non- To clarify the means to prevent the contamination of the non-hazardous Return Check Valve fluid system by the hazardous medium. 7-1-7/Figure 4 Typical Drain Connection To clarify the means to prevent the contamination of the non-hazardous fluid system by the hazardous medium. 7-1-9/9.1 Initial Jacking Test To require climbing pinions be visually examined, as far as practical, upon completion of jacking trials. 7-2-1/1.1 Chapter 2 Sections 1 through 11 To consolidate the survey requirements for MODU Habitability notations in Part 7. To clarify that certain Rule requirements in the MODU Rules are based on the Steel Vessel Rules. 7-2-1/17 Onboard Drawings and Manuals To provide define the application of 7-2-1/17. 7-2-1/17.5 Survey Planning Document (SPD) To require the Survey Planning Document to be mandatory. (New) 7-2-1/19.9 Sea Trials and/or Stability Test To include safety precautions to be taken during sea trials/stability test (New) to be conducted on an existing unit that has completed a major modification. 7-2-3/1.1 Plan for UWILD To clarify that all UWILD plans must be agreed by the ACS and later discussed during the pre-planning meeting with attending Surveyor. 7-2-3/1.5 Survey Planning Document (SPD) To clarify the requirements for the Survey Planning Document. 7-2-4/3.5 Preventative Maintenance Techniques To remove requirements superseded by new Subsection 7-2-4/5. (Deleted) 7-2-4/5 Annual Survey – Preventative To clarify Annual Confirmation Survey of machinery enrolled into (New) Maintenance Program (PMP) PMP. 7-2-4/7 Annual Survey – Thrusters for APS To clarify and separate requirements for units classed with APS and or PAS Notations PAS notations. 7-2-4/9 Annual Survey – Dynamic To clarify and separate requirements for units classed with DPS (New) Positioning Systems notation. 7-2-4/Table 1 Thruster Power System To show Rule requirements to be verified by attending Surveyors. (New) 7-2-4/Table 2 Power Distribution System To show Rule requirements to be verified by attending Surveyors. (New) ii ABS RULES FOR BUILDING AND CLASSING MOBILE OFFSHORE DRILLING UNITS . 2016 Part/Para. No. Title/Subject Status/Remarks 7-2-4/Table 3 System Performance To show Rule requirements to be verified by attending Surveyors. (New) 7-2-4/Table 4 Additional Alarms and Instruments To show Rule requirements to be verified by attending Surveyors. (New) for DPS-2 and DPS-3 7-2-5/1.5 Nondestructive Testing (NDT) To clarify the requirements. 7-2-5/1.13 Alternatives To explain that certain alternative techniques may be used during SPS, (New) however, they must be pre-agreed by the offshore ACS office before they are applied. 7-2-5/5.5.3 Nondestructive Testing (NDT) To remove inadvertently retained requirement. 7-2-5/7.3.1 General Visual Inspection (GVI) To clarify the requirements. 7-2-5/7.5.3 Nondestructive Testing (NDT) To clarify the requirements. 7-2-5/15 Thrusters and Dynamic Positioning To reflect similar changes made to the wording of Annual Surveys Systems that cover various notations. 7-2-6/Table 1 Examination of Mat or Spud Cans To add note regarding internal examination of mats. during Drydocking Survey 7-2-6/3 Underwater Inspection in Lieu of To clarify that all UWILD plans must be agreed by the ACS and later Drydocking (UWILD) discussed during the pre-planning meeting with attending Surveyor. 7-2-6/3.11 Alternatives To explain typical alternative techniques which may be used during UWILD, in particular, the use of ROVs for swim-by (general exam) during UWILD. 7-2-11 Crew Habitability To consolidate the survey requirements for MODU Habitability (New) notations in Part 7. To clarify that certain Rule requirements in the MODU Rules are based on the Steel Vessel Rules. 7-2-A2 Survey of Portable Modules To remove sections that are proposed to be shown in 6-1-2/11 and to indicate reference to survey requirements for portable accommodation modules. 7-2-A4 Preventative Maintenance Program To specify requirements for PMP for MODUs. (New) (PMP) 7-2-A5 Reliability Centered Maintenance To separate the requirements for RCM from the requirements of PM (New) (RCM) and CM plans for obtaining the PMP notation. ABS RULES FOR BUILDING AND CLASSING MOBILE OFFSHORE DRILLING UNITS . 2016 iii PART Table of Contents 7 Surveys CONTENTS CHAPTER 1 Surveys During Construction ................................................................ 1 Section 1 General ................................................................................ 11 Section 2 Surveys at Builder’s Yard – Hull Structure and Outfitting .... 13 Section 3 Surveys at Builder’s Yard – Machinery, Piping, Pressure Vessels, and Outfitting ......................................................... 25 Section 4 Surveys at Builder’s Yard – Mechanical and Piping Systems ............................................................................... 37 Section 5 Surveys at Builder’s Yard – Electrical Cables and Equipment ............................................................................ 47 Section 6 Surveys at Builder’s Yard – Electrical Systems ................... 59 Section 7 Surveys at Builder’s Yard – Hazardous Areas..................... 72 Section 8 Surveys at Builder’s Yard – Fire and Safety ........................ 80 Section 9 Surveys at Builder’s Yard – Sea Trial .................................. 90 Appendix 1 Mooring Equipment and Systems ........................................ 98 Appendix 2 Surveys of Computers for Stability Calculations ................ 100 CHAPTER 2 Surveys After Construction ............................................................... 102 Section 1 Conditions for Surveys After Construction ......................... 109 Section 2 Survey Intervals ................................................................. 118 Section 3 Survey Pre-planning .......................................................... 121 Section 4 Annual Surveys .................................................................. 123 Section 5 Special Periodical Surveys ................................................ 130 Section 6 Drydocking Surveys or Equivalent ..................................... 157 Section 7 Specific Survey on Self-Elevating Units After Ocean Transit Tow ........................................................................ 162 Section 8 Tail Shaft Surveys .............................................................. 163 Section 9 Boiler Surveys .................................................................... 164 Section 10 Automatic and Remote-control Systems ........................... 165 Section 11 Crew Habitability ................................................................ 166 Appendix 1 Lay-up and Reactivation of Laid-up Mobile Offshore Drilling Units ....................................................................... 168 Appendix 2 Survey of Portable Modules ............................................... 177 Appendix 3 Modification of a Self-Elevating Drilling Unit to Become Site-Specific Fixed Offshore Installation ............................ 179 Appendix 4 Preventative Maintenance Program (PMP) ....................... 181 Appendix 5 Reliability Centered Maintenance (RCM) .......................... 190 iv ABS RULES FOR BUILDING AND CLASSING MOBILE OFFSHORE DRILLING UNITS . 2016 PART Chapter 1: Surveys During Construction 7 CHAPTER 1 Surveys During Construction (2012) CONTENTS SECTION 1 General .................................................................................................. 11 1 General ............................................................................................. 11 3 Survey at Builder’s Yard ................................................................... 11 5 Certification and Classification .......................................................... 12 5.1 Validity of an Interim Class Certificate (ICC) ................................. 12 5.3 Certification of Incomplete Drilling Units ........................................ 12 7 Onboard Drawings and Manuals ...................................................... 12 SECTION 2 Surveys at Builder’s Yard – Hull Structure and Outfitting ...............