U-601057, Responds to NRC Re Violations Noted in Insp Rept 50-461/87-30.Corrective Actions:Startup & Control & Instrumentation Personnel Have Been Trained on Lessons Learned from Event.One Person in Charge of Maint Task
| ML20236B250 | |
| Person / Time | |
|---|---|
| Site: | Clinton  |
| Issue date: | 10/08/1987 |
| From: | Spangenberg F ILLINOIS POWER CO. |
| To: | Davis A NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| U-601057, NUDOCS 8710260034 | |
| Download: ML20236B250 (3) | |
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U-601057 :
- L42-87 (10 -08 )- L .
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,p6-lLLIN0/8 POWER 00MPANY CLINToN POWER STATloN. P,0. Box 678. CLINToN .lLLINols 61727
-r 0ctober. 8,11987'-
Docket No. 50-461 h- c.
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i Mr..A. B. Davis 9 y .d Regional-Administrator W g j Region III' .
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U.S. Nuclear Regulatory Commission d D
799 Roosevelt Road l Glen Ellyn, Illinois 60137 W 4
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Subject:
Response to the Notice of Violation in Inspection Report '0-461/87030,
- dated September 10, 1987 j
Dear Mr. Davis:
This letter is in response to your letter,' dated September-10,-
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1987, which contained Inspection. Report 50-461/87030. The Inspection Report detailed certain activities which appeared.to.be in violation of :J NRC requirements. Attachment A to this letter provides the Illinois _
Power Company response to this Technical' Specification. violation.'.
I trust that this response is adequate'to demonstrate compliance-with NRC requirements. Should you have any questions, please contact me.
Sincerely yours, A
'. A. Spangenberg, II Manager - Licensing and Safety j i
KAB/krm ,
Attachment cc: B. L. Siegel, NRC Clinton Licensing Project Manager
.NRC Resident Inspector y Illinois Department of Nuclear Safety
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h Attachment A
' Illinois Power-Company'
~Clinton' Power'StationL The Notice.of, Violation states iin part:
" Technical Specification 6.8.1.a. requires thatIwritten proce'dures '
.j shall'be established and implemented; covering the' activities: !
referenced ~in Appendix A of Regulatory Guide 1.33. Revision 2,'
. February 1978.' : Regulatory Guide '1.33, . Appendix A,' Item 9 lists" procedures for performing maintenance.
Contrary.to the above:'
On August 12. 1987, personnel performing maintenance on'the; Reactor:
Recirc Flow Control system in accordance with MaintenanceLWorkl Request (MWR) C-37643 failed to : implement the instructions of the 1 MWR in that prior to performing' work theydid not. ensure-that the'< j Hydraulic Power Unit was" locked-out."
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I Corrective Action Taken and Results Achieved ]
l L On August 12, 1987, the reactor was scrammed on high flux when the."B" Reactor Recirculation Flow Control Valve (RRFCV). shut.and subsequently j l opened causing an increase.in core flow and a corresponding. increase'in i core neutron flux. The RRFCV movement was cause'd by removal and- 'i subsequent reinsertion of the "B" RRFCV function generator card without .j having the "B" Hydraulic Power, Unit (HPU) locked out.. The card-was moved by a Control and Instrumentation (C&I) technician working with a-Startup engineer to calibrate the funct1on generator'for the "A" RRFCV utilizing MWR C37643 and Clinton Power Station (CPS) procedure 8625.01, Recirculation Loop Flow Control Channel Calibration., The.MWR required 9 that the HPU of the train being worked on be verified with Operations as R Locked out. This verification was not performed and the HPU was not' locked out. Consequently, when the C&1 technician removed'the RRFCV "B" function generator card, the RRFCV "B" stroked to.the minimum position.
A Control Room Operatar observed indication'of the valve movement and ,
I approached the C&I technician to inquire if the work being performed had..
caused the actuation. The C&I technician, as' directed.by supervision, (f then reinserted the function generator card causing ~ the .RRFCV "B'! to . j reopen, which caused an increase in core flow resulting.in the reactor:
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scram on high flux. Operations immediately entered the scram procedure )
and placed the plant in stable condition. !
Corrective Action Taken.to Prevent Recurrence Startup and C&I personnel have been trained on lessons learned from this> '
J l event, including proper com.nunication with Operations, and the requirement to have one person clearly in charge of a maintenance task. H l
Appropriate disciplinary actions were taken against the responsible 1
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1 individual for failure to follow the MWR' requirements. Additionally, a memorandum was issued'to all Operations supervision stating the Clinton .l Power Station policy regarding restoration of' plant conditions following .j a maintenance related event.- This policy provides for stabilization of ')
plant configuration, stopping related' Maintenance activity, notification l of the. Shift Supervisor and restoration only by direct 1on of the Shift j Supervisor.
Date When Full Compliance Will Be Achieved Illinois Power Company is in' full complianco. ;
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