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For the Classification and Construction of Sea-Going

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For the Classification and Construction of Sea-Going RUSSIAN MARITIME REGISTER OF SHIPPING FOR THERULE CLASSIFICATIOS N AND CONSTRUCTION OF SEA-GOING SHIPS Part XIV WELDING Saint-Petersburg Edition 2017 Rules for the Classification and Construction of Sea-Going Ships of Russian Maritime Register of Shipping have been approved in accordance with the established approval procedure and come into force on 1 January 2017. The present twentieth edition of the Rules is based on the nineteenth edition (2016) taking into account the additions and amendments developed immediately before publication. The unified requirements, interpretations and recommendations of the International Association of Classification Societies (IACS) and the relevant resolutions of the International Maritime Organization (IMO) have been taken into consideration. The Rules are published in the following parts: Part I "Classification"; Part II "Hull"; Part in "Equipment, Arrangements and Outfit"; Part IV "Stability"; Part V "Subdivision"; Part VI "Fire Protection"; Part VIJ "Machinery Installations"; Part VHI "Systems and Piping"; Part IX "Machinery"; Part X "Boilers, Heat Exchangers and Pressure Vessels"; Part XI "Electrical Equipment"; Part XH "Refrigerating Plants"; Part XHI "Materials"; Part XIV "Welding"; Part XV "Automation"; Part XVI "Hull Structure and Strength of Glass-Reinforced Plastic Ships and Boats"; Part XVII "Distinguishing Marks and Descriptive Notations in the Class Notation Specifying Structural and Operational Particulars of Ships"; Part XVUI "Common Structural Rules for Bulk Carriers and Oil Tankers". The text of the Part is identical to that of the IACS Common Structural Rules; Part XIX "Additional Requirements for Structures of Container Ships and Ships, Dedicated Primarily to Carry their Load in Containers". The text of the Part is identical to IACS UR SUA "Longitudinal Strength Standard for Container Ships" (June 2015) and S34 "Functional Requirements on Load Cases for Strength Assessment of Container Ships by Finite Element Analysis" (May 2015). Parts I to XVII are published in electronic format and hard copy in Russian and English. In case of discrepancies between the Russian and English versions, the Russian version shall prevail. Parts XVUI to XIX are published in English and in electronic format only. ISBN 978-5-89331-346-8 © POCCHHCKHH MOpCKOH perHCTp CVflOXOflCTBa, 2017 As compared to the previous edition (2016), the twentieth edition contains the following amendments. RULES FOR THE CLASSIFICATION AND CONSTRUCTION OF SEA-GOING SHIPS PART XIV. WELDING 1. Section 2: the amendments have been made to the requirements for welding of wrought aluminium alloys intended for structures, cargo containment systems of gas carriers (considering scientific research No. 15-49152-2015/8/37). 2. Section 3: the amendments have been made to the requirements for welding consumables intended for welding of wrought aluminium alloys intended for structures, cargo containment systems of gas carriers (considering scientific research No. 15^19152-2015/8/37). 3. Chapter 3.2: new para 3.2.4.13 specifying the requirements for radiographic testing of the welded joints with the use of digital detectors has been introduced. 4. Chapter 4.2: paras 4.2.3.2 to 4.2.3.4 have been amended considering IACS W17 (Rev.4 Jan 2016). 5. Section 5: references to the applicable international standards have been updated; the applicable terminology has been specified. 6. Editorial amendments have been made CONTENTS PART XIV. WELDING 1 General 5 4 Welding consumables 48 1.1 Application 5 4.1 General 48 1.2 Definitions and explanations 5 4.2 General requirements for welding 1.3 General 5 of test assemblies and tests 52 1.4 Scope of surveys 5 4.3 Covered electrodes for manual arc welding 1.5 Technical documentation 5 of normal and higher strength hull 2 Technological requirements structural steels 56 for welding 6 4.4 "Wire-flux" combinations for submurged 2.1 General 6 arc welding 61 2.2 Welding of ship hull and equipment .... 7 4.5 Wire and "wire-gas" combinations 2.3 Welding in ship machinery construction . 9 for shielded metal arc welding 66 2.4 Welding of steam boilers and pressure 4.6 Welding consumables for use in electroslag vessels 11 and electrogas vertical welding 72 2.5 Welding of pipelines 11 4.7 Welding consumables for welding high 2.6 Welding of castings and forgings 12 strength steel 74 2.7 Welding of cast iron 12 4.8 Welding consumables for welding 2.8 Welding of clad steels 12 of corrosion-resistant (stainless) steel 2.9 Brazing 13 and for surfacing 76 2.10 Welding of aluminium and its alloys ... 13 4.9 Welding consumables for aluminium 2.11 Welding of copper and copper alloys, heavy alloys 86 metals and other non-ferrous metals ... 13 4.10 Welding consumables for titanium alloys . 89 2.12 Welding of high strength steels 13 5 Approval test for welders 93 2.13 Welding of titanium and titanium 5.1 General 93 alloys 14 6 Approval of welding procedures for welding 3 Testing of welded joints 17 of steel structures and products 94 3.1 General 17 6.1 General 94 3.2 Carrying-out and basic parameters 7 Approval of welding procedures of non-destructive testing of welded joints . 21 for aluminium alloys 95 3.3 Scope of non-destructive testing 29 7.1 General 95 3.4 Assessment of welded joint quality in hull 8 Approval of welding procedures for titanium structural steel 31 alloys 96 3.5 Assessment of welded joint quality in 8.1 General 96 aluminium alloy hull structures 40 PART XIV. WELDING 1 GENERAL 1.1 APPLICATION 1.3 GENERAL 1.1.1 The requirements of the present Part of the 1.3.1 Welding of items stated in 1.1.1 shall be Rules apply to the following items, which are subject effected by certified welders (operators) and Register- to survey by the Register: approved welding works (shops, bays) using welding .1 ship hulls; consumables and welding processes approved by the .2 machinery and machinery installations; Register. .3 steam boilers, heat exchangers and pressure The application of each of the welding processes (or vessels; its variant) at a particular works shall be backed up by the .4 piping; results of testing conducted in accordance with a .5 ship equipment and arrangements. program agreed with the Register according to Section 1.1.2 The requirements of the present Part shall 6, Part in "Technical Supervision during Manufacture of establish requirements for welding consumables manu• Materials" of Rules for Technical Supervision during facture, welding procedures, and testing of welded Construction of Ships and Manufacture of Materials and structures stated in 1.1.1. Products for Ships. 1.1.3 The requirements of the present Part shall Welding consumables shall be approved in compli• be applied when designing, building and manufactur• ance with the requirements of Section 4. ing items stated in 1.1.1. 1.3.2 Welding operation on structures subject to 1.1.4 The requirements of the present Part may survey by the Register shall be performed by those be applied when carrying out repairs of structures welders only who stood the tests prescribed by stated in 1.1.1 as well, to an extent, which is deemed Section 5. necessary and advisable. 1.4 SCOPE OF SURVEYS 1.2 DEFINITIONS AND EXPLANATIONS 1.4.1 General provisions concerning survey dur• 1.2.1 Definitions and explanations pertaining to the ing manufacture of materials and equipment shall be general terminology of the Rules shall be found in Part I found in General Regulations for the Classification "Classification". and Other Activity. Besides, for the purpose of the present Part the 1.4.2 As far as structures stated in 1.1.1 are following definitions and explanations have been concerned, the following is subject to survey by the adopted. Register: High temperature brazing (hard brazing) .1 welding consumables; is a brazing method, at which the melting temperature of .2 welding procedures (choosing of welding the solder is above 450 °C. consumables, preparation of parts for welding Heat-affected zone is the layer of the base assembly, pre- and postheating, heat treatment); metal adjacent to a weld (or to the deposited metal) .3 methods and scope of non-destructive testing where structural changes were caused by the welding and criteria for evaluation of welded joints. heat. Weld metal is the metal obtained by the merging of the fused base metal and the deposited metal, or by fusion of the base metal only. 1.5 TECHNICAL DOCUMENTATION Deposited metal is the metal obtained by melting of electrodes or welding wire and containing no 1.5.1 The scope of technical documentation on appreciable admixture of the base metal. welding, which shall be agreed as part of the ship Base metal is the metal of items being welded. design, is set out in Part I "Classification". Technical Penetration is the merging of the base metal documentation on items specified in 1.1.1 shall into the deposited one or the merging of the fused metal include information on welding required by those of both the components being welded. parts of the Rules, which cover the items concerned. Welding consumables include electrode, 1.5.2 The composition of technical documenta• welding wire, flux and schielding gas used in welding. tion for welding consumables being approved shall be determined proceeding from 4.1.2.1. 6 Rules for the Classification and Construction of Sea-Going Ships 2 TECHNOLOGICAL REQUIREMENTS FOR WELDING 2.1 GENERAL In the following cases the edges of parts to be welded shall be preheated at least to 20 °C over a width 2.1.1 The present technological requirements of 100 mm to both sides of the weld at ambient shall be applied when welding structures mentioned temperature: in 1.1.1.
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