Predictive Monitoring of Main Steam Safety Valves PUBLIC ACCESS

[+] Author Affiliations
Jessica Patrone

Exelon Generation - Braidwood Generating Station, Warrenville, IL

Phillip Twaddle

Exelon Generation, Warrenville, IL

Paper No. PVS2017-3539, pp. V001T04A003; 7 pages
  • ASME/NRC 2017 13th Pump and Valve Symposium
  • ASME/NRC 2017 13th Pump and Valve Symposium
  • Silver Spring, Maryland, USA, July 17–18, 2017
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4070-2
  • Compilation Copyright © 2017 ASME


This report describes the tools employed by the Braidwood Generating Station Main Steam System Engineer to identify Main Steam Safety Valves (MSSVs) which may require refurbishment. These methods include in-service Trevitesting results, visual identification of steam leaks past the valve disc, external temperatures readings on the body and tailpipe flange of the valve, thermography, and risk rank charts. Utilizing these methods, Braidwood Generation Station will begin the transition from preventative maintenance of the MSSVs to a more cost effective predictive maintenance, in which the valves are rebuilt or refurbished on an as-needed basis.

Paper published with permission.

Compilation Copyright © 2017 ASME
Topics: Safety , Valves , Steam
This article is only available in the PDF format.



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