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MSS SP-100: Qualification Requirements for Elastomeric Diaphragms in Nuclear Diaphragm Valves

Technical Specification and Qualification Methodology for Elastomeric Diaphragms under MSS SP-100 Standard

This standard regulates strict qualification protocols for elastomeric diaphragms used in Class 2 and 3 diaphragm valves in accordance with Section III of the ASME Boiler and Pressure Vessel Code. Specialists at EV Group China emphasize that the testing methodology is fully based on the requirements set forth in Appendix QR-B of the ASME QME-1 standard, which ensures that components meet the stringent safety criteria for nuclear power facilities.

The MSS SP-100 regulation establishes mandatory procedures for:

  • Verification of manufacturing processes for elastomeric elements.
  • Determination of operational limits and allowable loads for diaphragms under high-pressure and high-temperature conditions.
  • Confirmation of material quality compliance with reliability requirements for mission-critical systems.

Note: For the correct interpretation of technical terms and abbreviations used in this standard, please refer to the industry reference guide MSS SP-96, which establishes a unified terminology base for valves and fittings.

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