AS ASA CISPR NFPA-FLUID NORSOK SMPTE
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(Includes Errata dated September 23, 1996) Covers guidelines for inspecting, installing, maintaining, repairing, and operating of SSVs/USVs.
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One of the means of assuring positive wellstream shutoff is th euse of the wellhead surface safety valve (SSV) or underwater safety valve (USV). It is imperative that the SSV/USV be mechanically reliable. It should therefore be operated, tested and maintained in a manner to assure continously reliable performance. The purpose of this recommended practice is to provide guidance for inspecting, installing, operating, maintaining, and onsite repairing SSVs/USVs manufactured according to API Spec 6A (17th Edition or later), Clause 10.20 or API Spec 14D (withdrawn). Included are procedures for testing SSVs/USVs. This document covers guidelines for inspecting, installing, maintaining, onsite repairing, and operating SSVs/USVs. Nothing in this document is to be construed as a fixed rule without regard to sound engineering judgement nor is it intended to override applicable federal, state or local laws.
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