Fibre Reinforced Compressed Gas Cylinders to ISO 11119-2 (pdf ...

5.5 Design VariantsA new stress analysis is required for any design variant that alters the input parameters to thestress analysis, specified in clause 7.2.5 of ISO 11119 Part 2, that are different to those usedto analyse the approved cylinder design.5.6 Manufacturing Quality AssuranceThe inspection agency must approve the manufacturer’s quality assurance system andprocedures.The inspection agency may reject the selection of cylinders submitted for type testing if thereare concerns regarding the selection’s ability to represent typical cylinders from themanufacturing process. In such circumstances the inspection agency may select their ownrepresentative sample (8.1 & 8.2).5.7 Salt Water Immersion TestThe salt water immersion test is mandatory for all cylinders i.e. it is not limited to cylindersintended for underwater applications.5.8 Inspectors ReportsThe design approval certificate must be signed off by the inspection agency confirming thatthe design meets the requirements of ISO 11119-2 (Annex A). This may provide a testcertifier with sufficient evidence to issue a design verification certificate under Regulation15(3) of the Hazardous Substances (Compressed Gases) Regulations 2004.Page 6 of 6