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MOORING CHAINS AND ACCESSORIES FOR POSITIONING OF OFFSHORE INSTALLATIONS

release time：2015-12-03 09:12
1 This Guideline is applicable to the products of mooring chains and accessories for the positioning of  mobile offshore units, mooring of floating production units, mooring of offshore loading systems and mooring of gravity based structures, including common links, connecting common links, enlarged links, end links, Kenter shackles, swivels, swivel shackles, excluding studless mooring chains. Depending on the nominal tensile strength, chains are to be divided into five grades, i.e., OM3, OM3S, OM4, OM4S and OM5.
2 This Guideline is applicable to works approval and inspection of the above products. 1.In accordance Rules for material and welding 2015 the mooring chain grades are modified to the R3, R3S, R4, R4S and R5.
2.In accordance with the IACS UR W22, the documents and drawing submitted for approval, the R4S and R5 is added.
3.In accordance with the IACS UR W22, the documents requirement of the heat treatment calibration and detection are added.
4.In accordance with the IACS UR W22, the documents requirements of the surface quality requirement and  removing and replacing defective links are added.
5.In accordance with the IACS UR W22, the range of the steel for mooring chain cables within different grades.
6.In accordance with the IACS UR W22 and CTOD test is modified.
7.In accordance with < The instruction for the publish of the guideline of the marine productions>, the original guideline is modified.
Download link：
W11W11 MOORING CHAINS AND ACCESSORIES FOR POSITIONING OF OFFSHORE INSTALLATIONSclean.pdf
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