ENS 50083

v t e ENS Event
04:00 May 2, 2014
Title	Part 21 Report - Check Valves with Missing Jam Nuts
Event Description	The following is a synopsis of information received via facsimile from Flowserve: Jam nuts were found to be missing on size 4, pressure class 600, normally open, in-line check valves per Flowserve drawing no. 07-45546-01. The valves are used in saturated steam service and must close with a reverse flow of less than 7000 lbs/hr steam at 95 and 1085 psig. The valve operating parts are identified as safety related. These valves were supplied to both Diablo Canyon and Sequoyah nuclear power plants. Flowserve recommends that all in-service valves be inspected for proper torque and that dual thread staking be provided per revised Flowserve drawings.

ENS 50083 +/-
Where
Flowserve Us Inc., Flow Control Division Raleigh, North Carolina (NRC Region 1)
Organization:	Flowserve Us Inc.
Reporting

10 CFR 21.21(d)(3)(i), Failure to Comply or Defect
Time - Person (Reporting Time:+12.8 h0.533 days <br />0.0762 weeks <br />0.0175 months <br />)
Opened:	James Mcgeehin 16:48 May 2, 2014
NRC Officer:	Donald Norwood
Last Updated:	May 2, 2014
50083 - NRC Website
v • d • e

v t e Emergency Notification System
Flowserve Us Inc., Flow Control Division with 10 CFR 21.21(d)(3)(i), Failure to Comply or Defect
WEEKMONTHYEAR2014-05-02T04:00:00 [Table view]
[ENS list for Flowserve Us Inc., Flow Control Division]

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