api 594 wafer check
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7/23/2019 API 594 Wafer Check
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API is an equal opportunity employer.
TO: APIStd594 MonogramLicensees
APIStd594 MonogramApplicants
APIAuditorsofAPIStd594
FROM: DonWhittaker,ManagerMonogramProgram/APIQR
DATE: December17,2010
RE: APIStd594
StandardforCheckValves:Flanged,Lug,Wafer,andButtwelding,Seventh
Edition
DearColleague,
ItisourpleasuretoannouncethatAPIStd594,7th
Editionhasbeenpublished.
Please note that this documentwill require your review and attention. Your facility should
ensure that all revisions are incorporated into your quality management system and that
affected personnel are trained in the new requirements. Additionally, please evaluate the
effectivenessofall trainingprovidedandensureallpersonnelarecompetent toperform the
requiredactivities. Thisshouldbecompletedpriortothespecificationseffectivedateandyour
nextscheduledaudit.
ThepublicationdateforthisdocumentwasSeptember2010withaneffectiveimplementation
dateofMarch1,2011.
Ifyoushouldhavetechnicalquestionsregardingthecontentsofthisspecification,pleasesend
For inquiries about your API Monogram License(s) or API Monogram requirements, please