ISO11623isaninternationalstandardthatspecifiestherequirementsfortheperiodicinspectionandtestingoftransportablecompositegascylinders.Thesecylindersarewidelyusedforstoringandtransportingcompressedgases,andtheirintegrityiscriticalforensuringsafetyduringhandlingandusage.Thestandardoutlinesdetailedproceduresforvisualinspections,hydraulictests,andothernon-destructivetestingmethodstoassessthestructuralsoundnessandperformanceofthecylinders.Italsodefinesthemaximumallowableservicelife,requalificationintervals,andrejectioncriteriatoensurecompliancewithsafetyregulations.ByadheringtoISO11623,manufacturers,inspectors,anduserscanmaintainthereliabilityofcompositegascylindersandminimizetheriskoffailuresoraccidents.