BSIS021157:2018 BSlStandardsPublication Ships and marine technology - Ball valves for use in low temperature applications - Design and testing requirements bsi. BRITISH STANDARD BSISO21157:2018 Nationalforeword ThisBritishStandardistheUKimplementationofIS021157:2018. TheUKparticipation in itspreparationwasentrustedtoTechnical CommitteeSME/32,Shipsandmarinetechnology-Steeringcommittee A listoforganizationsrepresented onthis committeecanbeobtained on requesttoitssecretary. Thispublicationdoesnotpurportto includeall thenecessaryprovisions ofa contract.Usersareresponsiblefor its correctapplication. @TheBritishStandardsInstitution2018 PublishedbyBSIStandardsLimited2018 ISBN9780580926570 ICS47.020.30 CompliancewithaBritish Standardcannot confer immunityfrom legalobligations. ThisBritish Standardwaspublished undertheauthorityofthe StandardsPolicyandStrategyCommitteeon31October2018. Amendments/corrigendaissuedsincepublication Date Textaffected BSIS021157:2018 ISO INTERNATIONAL 21157 STANDARD First edition 2018-11 Ships and marine technology Ball valvesforuseinlowtemperature applicationsDesign and testing requirements Navires ettechnologie maritime-Robinets a boisseau spherique destinesauxapplicationsabassetemperature-Exigencesde conceptionetd'essai Referencenumber ISO21157:2018(E) @IS02018