DNVGL-RU-SHIP-Pt4Ch6 Piping systems

1 The content of this service document is the subject of intellectual property rights reserved by DNV GL AS ("DNV GL"). The useraccepts that it is prohibited by anyone else but DNV GL and/or its licensees to offer and/or perform classification, certificationand/or verification services, including the issuance of certificates and/or declarations of conformity, wholly or partly, on thebasis of and/or pursuant to this document whether free of charge or chargeable, without DNV GL's prior written GL is not responsible for the consequences arising from any use of this document by electronic pdf version of this document, available free of chargefrom , is the officially binding GL ASRULES FOR CLASSIFICATIONS hipsEdition October 2015 Part 4 systems and componentsChapter 6 Piping systemsFOREWORDDNV GL rules for classification contain procedural and technical requirements related to obtainingand retaining a class certificate.

2 The rules represent all requirements adopted by the Society asbasis for classification. DNV GL AS October 2015 Any comments may be sent by e-mail to 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 shallpay compensation to such person for his proved direct loss or damage. However, the compensation shall not exceed an amount equal to tentimes the fee charged for the service in question, provided that the maximum compensation shall never exceed USD 2 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 4 Chapter 6 Changes - currentRules for classification: Ships DNVGL-RU-SHIP-Pt4Ch6 .

3 Edition October 2015 Page 3 Piping systems DNV GL ASCHANGES CURRENTThis is a new rules enter into force 1 January 4 Chapter 6 ContentsRules for classification: Ships DNVGL-RU-SHIP-Pt4Ch6 . Edition October 2015 Page 4 Piping systems DNV GL ASCONTENTSC hanges 1 General 113 Documentation Certification 2 Piping Carbon and low alloy Copper and copper Grey cast Nodular cast iron of the ferritic Nodular cast iron of the ferritic/pearlitic and pearlitic Plastic Material 25 Section 3 Design Piping Operation of Valves on ship's sides and Fittings on watertight 28 Section 4 Ship Piping Basic requirements for drainage of compartments and 4 Chapter 6 ContentsRules for classification: Ships DNVGL-RU-SHIP-Pt4Ch6 .

4 Edition October 2015 Page 5 Piping systems DNV GL Prevention of unintentional ingress of water into compartments or Drainage of cargo Cargo holds carrying alternately liquid cargo, ballast and dry 304 Drainage of cargo deck Additional requirements for cargo spaces with fixed water-spraying systemor high-expansion foam 315 Drainage of dry compartments other than machinery spaces ofcategory A and cargo Spaces other than cargo spaces fitted with automatic water 326 Drainage of machinery spaces of category Branch bilge Direct bilge Divided and specially formed machinery Drainage of barges and 348 Bilge pumping and Capacity and types of bilge pumping Bilge pumping Sizes of bilge Bilge pipes through tanks and Bilge wells, mud boxes.

5 Valves 389 Ballast system and drainage of Drainage of ballast Filling of ballast Ballast Water Management Anti-heeling Remotely controlled bilge and ballast Air, overflow and sounding Air 4 Chapter 6 ContentsRules for classification: Ships DNVGL-RU-SHIP-Pt4Ch6 . Edition October 2015 Page 6 Piping systems DNV GL Sectional area of air Overflow Sectional area of overflow Sounding Other level indicating Sectional area of sounding Air and sounding pipes through refrigerated Air and sounding pipes for barges and Tanks for liquid cargoes other than mineral oils with flash point above60 C (closed cup).. 44 Section 5 Machinery Piping 451 Redundancy and Drip Oil Cooling Cooling water Sea inlets for cooling water Lubricating oil Lubricating oil pre-treatment Lubricating oil Emergency supply of lubricating oil to main Remote shut-off arrangement for lubricating oil 474 Fuel oil Flash point of fuel Fuel oil Fuel oil Arrangement of valves, cocks and Remotely controlled shut-off arrangement for fuel oil Fuel supply through stand pipes and mixing Fuel oil pre-treatment Fuel oil Viscosity Various 515 Thermal-oil 4 Chapter 6 ContentsRules for classification: Ships DNVGL-RU-SHIP-Pt4Ch6 .

6 Edition October 2015 Page 7 Piping systems DNV GL Installation of thermal oil Thermal oil Thermal oil expansion tank Quick drainage valves and emergency shut-off Expansion tank connection Pre-pressurised thermal oil Thermal oil circulation Valves in thermal oil Insulation and Test equipment and Feed water and condensate Feed water Feed water Feed water Feed water Condensate from steam heating of 567 Steam Steam Steam supply to auxiliary Shut-off Safety Blow down valves on ship's 578 Hydraulic Hydraulic power Hydraulic Hydraulic Pneumatic Pneumatic Pneumatic starting 60 Section 6 Refrigeration 4 Chapter 6 ContentsRules for classification: Ships DNVGL-RU-SHIP-Pt4Ch6 .

7 Edition October 2015 Page 8 Piping systems DNV GL Certification of control and monitoring 623 Design Design Refrigeration Refrigerant Refrigeration system Pipes and Pressure vessels and heat Safety valves and discharge 676 Brine Brine Piping system and 687 Refrigeration system 698 Personnel protective Personnel protection 69 Section 7 Rules for ozone ship Protective and medical Arrangement and system Ozone Piping and generation Instrumentation and control Operational Manufacture and 8 Pollution Oil Pollution Ships of 400 gross tonnage and Ships below 400 gross 75 Part 4 Chapter 6 ContentsRules for classification: Ships DNVGL-RU-SHIP-Pt4Ch6 . Edition October 2015 Page 9 Piping systems DNV GL AS2 Exhaust gas cleaning systems for the reduction of Component and system Exhaust gas Treatment fluid Control and monitoring Surveys and Exhaust gas cleaning systems for the reduction of Component and system Exhaust gas Sea water Freshwater Treatment fluid Waste and discharge Control and monitoring Surveys and 9 Pipes, pumps, valves.

8 Flexible hoses and detachable pipe Minimum wall Calculation of wall thickness of pipes being subject to internal Thermal expansion Documentation of thermal stress Stress Plastic Pumps and Fans or Relief Hydrostatic Capacity Fans or Valve Hydrostatic Certification of Flexible 4 Chapter 6 ContentsRules for classification: Ships DNVGL-RU-SHIP-Pt4Ch6 . Edition October 2015 Page 10 Piping systems DNV GL Detachable pipe Flange Pipe couplings other than Expansion 1086 Socket welded joints and slip-on sleeve welded 113 Section 10 Manufacture, workmanship, inspection and Welded Preheating of steel Heat treatment after welding of steel Non-destructive 1162 Brazing of copper and copper 1183 Pipe Heat treatment after Joining of plastic 1195 Hydrostatic tests of Hydrostatic testing before installation on Hydrostatic testing after assembly on Functional 122 Part 4 Chapter 6 Section 1 Rules for classification: Ships DNVGL-RU-SHIP-Pt4Ch6 .

9 Edition October 2015 Page 11 Piping systems DNV GL ASSECTION 1 GENERAL REQUIREMENTS1 The rules in this section apply to Piping systems for ships and barges for the assignment of main Compliance with the rules is required for installations and equipment necessary for performing themain functions given in [ ]. The rules give system requirements and prescribe minimum requirements for materials, design,manufacture, inspection and Piping is defined to include the following components: pipes flanges with gaskets and bolts and other pipe connections expansion elements valves, including hydraulic and pneumatic actuators, and fittings hangers and supports flexible hoses pump A Piping system is defined to include Piping , as well as components in direct connection to thepiping such as pumps, heat exchangers, evaporators, independent tanks etc.

10 With the exception of maincomponents such as steam and gas turbines, diesel engines, reduction gears and components which are subject to internal pressure and are not included in the Piping , the designrequirements in Pipe tunnel indicates a space that can be entered via doors or hatches and shall be Pipe duct is a space is which is normally not entered, but can be entered via manholes and is providedwith air Classes of Piping systems . For the purpose of testing, type of joint to be adopted, heat treatment andwelding procedure, Piping is subdivided into three classes as indicated in Table 1 Classes of Piping systemsClass I 1)Class II 1)Class III 1) Piping system forp (bar)t ( C)p (bar)t ( C)p (bar)t ( C)Steam> 16or > 300 16and 300 7and 170 Thermal oil> 16or > 300 16and 300 7and 150 Part 4 Chapter 6 Section 1 Rules for classification: Ships DNVGL-RU-SHIP-Pt4Ch6 .