ML20028C726
| ML20028C726 | |
| Person / Time | |
|---|---|
| Site: | Waterford  |
| Issue date: | 01/06/1983 |
| From: | Maurin L LOUISIANA POWER & LIGHT CO. |
| To: | Jay Collins NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| References | |
| REF-PT21-83 10CFR-050.55E, 10CFR-50.55E, W3I83-0003, W3I83-3, NUDOCS 8301140041 | |
| Download: ML20028C726 (2) | |
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LOUISIANA P O W E R & L 1 G H T! R o. Box 6008. NEW ORLEANS. LOUISIANA 70174 242 oeunoNoe srnter
- (504) 368-2345
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L V. MAURIN Voce President Nuckar Operations Janusry 6, 1983 W3I83-0003 Q-3-A35.07.23 Mr. John T. Collins, Regional Administrator, Region IV
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i U. S. Nuclear Regulatory Commission t
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611 Ryan Plaza Drive, Suite 1000
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Arlington, Texas 76012 M101983 i
SUBJECT:
Waterford SES Unit No. 3 8
m Docket No. 50-382 Significant Construction Deficiency No. 23
" Defective Valve Actuators (Fisher Controls)"
Final Report
REFERENCE:
LP&L Letter W3I82-0074 dated October 15, 1982
Dear Mr. Collins:
In accordance with the requirements of 10CFR50.55(e), we are hereby providing two copies of the Final. Report of Significant Construction Deficiency No. 23, " Defective Valve Actuators (Fisher Controls)."
If you have any questions, please advise.
Very truly yours,
{ d.7 L. V. Maurin LVM/ MAL:keh Attachment cc:
- 1) Director 3)
E. Blake Office of Inspection & Enforcement U. S. Nuclear Regulatory Commission Washington, D. C.
20555 (with 15 copies of report) i l
- 2) Director 4)
W. Stevenson Office of Management Information and Program Control U. S. Nuclear Regulatory Commission l
Washington, D. C.
20555 i
(with I copy of report) l 8301140041 830106 PM ADOCK 05000382 g
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.FkNALREPORTOF-SIGNIFICANT' CONSTRUCTION DEFICIENCY NO.L23c
" DEFECTIVE VALVE ACTUATORS ((FISHER' CONTROLS)'?
- INTRODUCTION;
- This report :is; submitted, pursuant to 10CFR5'0.55(e).
It describes defects in 'the
- Spring Return Actuators.:resulting in replacement of the-spring' guide sleeves.
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-This problem is considered reportable:under the requirements of 10CFR50.55(e). :
This problem was identified to the USNRC by G.H. Bettis ' Corporation under 10CFR23..
DESCRIPTION In November 1980, during testing by thel.Hd Bettis Corporation _in'their R &-D G
Laboratory, a defect was discovered in the N521C-SR/N522C-SR (Spring Return)-
Actuators supplied by Jamesbury Corporation,LPO No. NY-403539, and Fisher Controls Company, PO No. NY-403483. Bettis'found that the sp' ring guide sleeve shifting internally could prevent the movement of.the actuator. The failure to actuate ~
l could only occur in the normal power ' stroke, and if the "0" degree position'of' the: valve is actually past the normal "0" of the actuator. These actuators are'
.used.on valves-in the component cooling water and HVAC systems.
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i SAFETY IMPLICATIONS l
r Further evaluation since.the Interim Report has indicated that this deficiency I
on the component cooling water isolation valves to the Reactor Coolant Pumps (3CC-B188A1, 3CC-B189B1, 3CC-B190A2, and 3CC-B191B2) would not create a safety i
haza.d.
The deficiency is, however, still considered reportable due to its j
effect on HVAC control room isolation valves (3HV-B169A, 3HV-B170B, 3HV-B177A,
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3HV-B178B, 3HV-B171A, 3HV-B172B). This deficiency could have caused these
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valves.to fai11to isolate.
CORRECTIVE ACTION IMPLEMENTED
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The corrective action for this significant construction deficiency involved the reworking of the above mentioned valve actuator assemblies.
i Nonconformance Report W3-3058, along with service forms #81-11-235, 81-11-236, 82-4-49, 82-12-122, and G.H. Bettis-Corporation Corrective Action Report No. 0011 were generated to instruct, track, and document corrective action.
l Corrective action was completed under the direction of the Bettis-representative, using'the above mentioned NCR, service forms, and corrective action report.
' The corrective action, service forms, and nonconformance report documentation have j
been reviewed.. accepted, and closed as of December 28, 1982.
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This report is submitted as the final report.
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