DNVGL-RU-SHIP-Pt5ch11 Non Self-Propelled Units
Total Page:16
File Type:pdf, Size:1020Kb
RULES FOR CLASSIFICATION Ships Edition July 2016 Part 5 Ship types Chapter 11 Non self-propelled units The content of this service document is the subject of intellectual property rights reserved by DNV GL AS ("DNV GL"). The user accepts that it is prohibited by anyone else but DNV GL and/or its licensees to offer and/or perform classification, certification and/or verification services, including the issuance of certificates and/or declarations of conformity, wholly or partly, on the basis of and/or pursuant to this document whether free of charge or chargeable, without DNV GL's prior written consent. DNV GL is not responsible for the consequences arising from any use of this document by others. The electronic pdf version of this document, available free of charge from http://www.dnvgl.com, is the officially binding version. DNV GL AS FOREWORD DNV GL rules for classification contain procedural and technical requirements related to obtaining and retaining a class certificate. The rules represent all requirements adopted by the Society as basis for classification. © DNV GL AS July 2016 Any comments may be sent by e-mail to [email protected] If any person suffers loss or damage which is proved to have been caused by any negligent act or omission of DNV GL, then DNV GL shall pay compensation to such person for his proved direct loss or damage. However, the compensation shall not exceed an amount equal to ten times the fee charged for the service in question, provided that the maximum compensation shall never exceed USD 2 million. In this provision "DNV GL" shall mean DNV GL AS, its direct and indirect owners as well as all its affiliates, subsidiaries, directors, officers, employees, agents and any other acting on behalf of DNV GL. CHANGES – CURRENT t n e r This document supersedes the October 2015 edition. r Changes in this document are highlighted in red colour. However, if the changes involve a whole chapter, u c section or sub-section, normally only the title will be in red colour. - s Main changes July 2016, entering into force as from date of e publication g n a • Sec.2 Hull h C — Sec.2 [4.2]: Replaced blowing out pressure with air overpressure for a more consistent use of terms. The air overpressure is applicable for a static load scenario since emptying tanks in extreme sea condition will 1 1 not be applicable. — Sec.2 [5.1.1]: Some minor change to the application is included. r e — Sec.2 [5.1.2]: For the minimum section modulus requirement amidship which follows IACS gross t scantlings apply instead of net scantlings. Correction factor related to service restriction was missed out in p the January 2016 release and has now been implemented. a — Sec.2 [5.1.3]: Due to the change to gross section modulus in [5.1.2] the allowable stresses in [5.1.3] are h C amended accordingly. 5 t Editorial corrections r a In addition to the above stated changes, editorial corrections may have been made. P Rules for classification: Ships — DNVGL-RU-SHIP-Pt5Ch11. Edition July 2016 Page 3 Non self-propelled units DNV GL AS CONTENTS s t n e Changes – current.................................................................................................. 3 t n o Section 1 General.................................................................................................... 7 C 1 Introduction.........................................................................................7 1 1 1.1 Introduction..................................................................................... 7 r 1.2 Scope..............................................................................................7 e t 1.3 Application....................................................................................... 7 p 2 Class notations.................................................................................... 8 a h 2.1 Ship type notations.......................................................................... 8 C 2.2 Additional class notations.................................................................. 8 5 3 Definitions........................................................................................... 9 t r 3.1 Terms..............................................................................................9 a P 4 Documentation.....................................................................................9 4.1 Documentation requirements............................................................. 9 5 Certification....................................................................................... 12 5.1 Certification requirements................................................................ 12 6 Testing............................................................................................... 12 6.1 Testing during newbuilding for concrete barges...................................12 Section 2 Hull........................................................................................................13 1 General arrangement design............................................................. 13 1.1 Subdivision arrangement................................................................. 13 2 Compartment arrangement................................................................13 2.1 Bottom structure............................................................................ 13 3 Structural design principles............................................................... 13 3.1 Main deck...................................................................................... 13 3.2 Bottom structure............................................................................ 13 4 Loads................................................................................................. 13 4.1 Deck loading.................................................................................. 14 4.2 Airoverpressure...............................................................................14 5 Hull girder strength........................................................................... 14 5.1 Application..................................................................................... 14 5.2 Special consideration.......................................................................15 5.3 Split hopper barges.........................................................................16 6 Hull local scantling............................................................................ 18 6.1 Deck structure................................................................................18 7 Buckling............................................................................................. 18 Rules for classification: Ships — DNVGL-RU-SHIP-Pt5Ch11. Edition July 2016 Page 4 Non self-propelled units DNV GL AS 7.1 Stresses based on direct strength analysis.........................................18 s 8 Fatigue strength................................................................................ 18 t n 8.1 Application..................................................................................... 18 e t 9 Special requirements......................................................................... 18 n o 9.1 Fore peak...................................................................................... 18 C 9.2 Bottom slamming............................................................................19 1 9.3 Supporting structure of towing equipment......................................... 19 1 10 Pusher/barge or pusher/pontoon units...........................................19 r e 10.1 Subdivision arrangement................................................................19 t p 10.2 Hull girder strength....................................................................... 19 a h 10.3 Hull local scantling........................................................................ 19 C 10.4 Special requirements - connecting elements..................................... 20 5 10.5 Special requirements - Ice strengthening......................................... 21 t r a Section 3 Systems and equipment........................................................................ 22 P 1 Steering arrangement........................................................................22 1.1 General requirements...................................................................... 22 2 Anchoring and mooring equipment....................................................22 2.1 General requirements...................................................................... 22 2.2 Pusher/barge and pusher/pontoon units............................................ 23 3 Machinery, systems and electrical installations................................. 23 3.1 General requirements...................................................................... 23 3.2 Pusher/barge and pusher/pontoon units............................................ 23 Section 4 Safety and lifesaving appliances........................................................... 24 1 General safety requirements............................................................. 24 1.1 General..........................................................................................24 2 Fire safety..........................................................................................24 2.1 General requirements...................................................................... 24 3 Power supply..................................................................................... 24 3.1 General requirements.....................................................................