ENS 48850

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v t e ENS Event
05:00 Jan 28, 2013
Title	Part 21 Report - Foreign Material Inside Edg Air Start Piping
Event Description	Facility Affected: Xcel Energy - Prairie Island Nuclear Generating Plant (PINGP). Component Affected: OP Engine- Air Start Piping Assemble (p/n 11879060*00) shipped after October 23, 2012. Supplier: Fairbanks Morse Engine, 701 White Ave., Beloit, WI 53511. Nature of Defect: During a routine emergency diesel generator (EDG) test on 1/28/2013, one of the two redundant air start systems was isolated from the other and the single air start system failed to start the EDG due to the foreign material in the solenoid valve. The foreign material removed from the solenoid valve during failure analysis appears to be liquid pipe sealant used to seal threaded pipe joints during assembly. Safety Hazard Which Could Be Created By Such Defect: Foreign material within both of the redundant air start piping systems could become lodged in both of the solenoid valves. Simultaneous failure of the two solenoid valves would prevent the emergency diesel generator from starting. Corrective Action: PINGP has completed disassembly and cleaning of both piping systems to ensure no foreign material remains within the piping system. FM will create a workmanship standard for pipe sealing, hydrostatic testing, and pressure testing that will include a foreign material exclusion program to ensure cleanliness of assemblies. This will be completed by June 30, 2013. FM has issued Corrective Action No. 2609 in its Quality Assurance Program.

ENS 48850 +/-
Where
Fairbanks Morse Beloit, Wisconsin (NRC Region 3)
Organization:	Fairbanks Morse
Reporting

10 CFR 21.21(d)(3)(i), Failure to Comply or Defect
Time - Person (Reporting Time:+1359.17 h56.632 days <br />8.09 weeks <br />1.862 months <br />)
Opened:	Dominic Dedolph 19:10 Mar 25, 2013
NRC Officer:	Donald Norwood
Last Updated:	Mar 25, 2013
48850 - NRC Website
v • d • e

v t e Emergency Notification System
Fairbanks Morse with 10 CFR 21.21(d)(3)(i), Failure to Comply or Defect
WEEKMONTHYEAR2020-01-31T06:00:00 [Table view]
[ENS list for Fairbanks Morse]

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