IR 05000254/1988015
| ML20155J078 | |
| Person / Time | |
|---|---|
| Site: | Quad Cities  |
| Issue date: | 10/21/1988 |
| From: | Davis A NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | Reed C COMMONWEALTH EDISON CO. |
| Shared Package | |
| ML20155J083 | List: |
| References | |
| NUDOCS 8810250194 | |
| Download: ML20155J078 (4) | |
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t OCT 21 1983 Docket No. 50-265 License No. OPR-30 EA 88-217 Commonwealth Edison Company ATTN: Mr. Cordell Reed Senior Vice President Post Office Box 767 Chicago, Illinois 60690 Gentlemen:
SUEUECT: NOTICE OF VIOLATION (NRC INSPECTION REPORTS NO. 50-254/88015(ORP]
ANDNO.50-265/88015(ORP])
This refers to the inspection conducted during the period June 5 through August 6,1988, at the Quad Cities Nuclear Power Station, Units 1 and 2 Cordova, Illinois. The inspection included a review of a Itcensee identified event where the automatic transfer function of a Motor Cohtrol Center (MCC)
failed during nodification testing. An enforcement confetence was held in the Region !!! Office en August 26, 1988 to discuss the evsnt, its causes, and corrective actions.
On June 22, 1988, during a modification test Quad Cities personnel discovered f
that KCC 28/29-5 would not automatically transfer from the Bus 29 feed to the
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Bus 28 feed.
Licensee investigation of the event showed that a wire was not i
landed according to the approved electrical drawing.
It appears that the I
wiring problem has existed since initial installation prior to 1971. Although
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testing of the automatic transfer circuit has been routinely conducted, these
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tests were inadequate and did not completely test the automatic transfer circuit.
The P". conside 1 the event significant; the iutomatic transfer function of MCC 1 /29-5 is needed in the event of e, large break Loss of Cooling Accident (LOCA) concurrent with a loss of Offsite Power (LOOP) and a failure of the i
Unit 2 Diesel Generator. Had the above situation occurred MCC 28/29-5 would
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not have been available to supply power to the RHR injection valves. This is
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in contrast to the Quad Cities Final Safety Analysis Report Section 8.2.3.1.
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CERTIFIED MAIL i
AETIIAN YtRTFf REQUESTED
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i that states that the breakers feeding 480 volt motor control center 28/29-5 from 480 volt Bus 29 will open automatically and the breaker feeding 480 volt motor control center 28/29-5 from 480 volt Bus 28 will close automatically to supply motor control center 28/29-5 frem OG 1/2 should DG 2 fail during a
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Therefore, based on these considerations, the staff has determined that this is a violation of the requirements in Technical Specification (TS) 0.5.A.3 - that the LPCI mode of the RHR system be operable -
in that the LPCI injection valves for both recirculation loops would not have
,1 opened, preventing LPCI from injecting, and the recirculatiot pump suction and discharge valves in both recirculation loops would have been prevented from shutting.
In acidition, the only available low pressure core cooling supply would have been a single core spray pump.
The staff recognizes that
this equipment failure would have been evident in the control room and
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j operator actions from the control room could have cerrected the problem.
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In accordance with the "General Statement of Policy and Procedure for NRC Enforcement Actions," 10 CFR Part 2. Appendix C (1988), the violation
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described in the enclosed Notice has been classified at a Severity Level III,
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A civil penalty is considered for a Severity Level III violation.
However.
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after consultation with the Director, Office of Enforcement and the Deputy Executive Director for Regional Operations, I have decided that a civil
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penalty will not be imposed in this case because you identified the problem i
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I and promptly reported it to the NRC anc tecause your extensive corrective actions to prevent recurrence, and good prior performance in the area of
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concern offset the added signi'icance of this violation due to the duretion.
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i NRC acknowledges that your new modification program which requires comprehensive testina of components was the primary factor in identifying this event.
It is
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the policy of the NRC to encourage this type of comprehensive corrective action
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I in identifying and responding to events of this type,
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You are required to respond to this letter and should follow the instructions
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specified in the enclosed Notice when preparing your resconse.
In your
l response, you should document the specific actions taken and any additional l
t actient you plan to prevent recurrence.
Af ter reviewinn your response to
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I this Notice, including your proposed corrective actions and the results of
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future inspections, the NRC will determine whether further NRC enforcement action is necessary to ensure compliance with NRC reculatory requirements.
In accordance with Section 2.790 of the NRC's "Rules of Practice" Part 2 I
Title 10. Code of Federal Regulatians, a copy of this let+.or and its enclosure I
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Ccmmonwealth Edison Company
OCT 21 1988
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, directed by this letter and the accompanying Notice are not
'he clearance procedures of the Office of Nanagement and Budget l
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'y the Paperwork Reduction Act of 1980, PL 96-511.
Sincerely,
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Original cigt.od by 1. Bert Davio A. Bert Davis Regional Administrator l'
Enclosures:
1.
Inspection Reports
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No. 50-254/88015'ORP:;
No. 50-265/88015'DRP
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cc w/ enclosures:
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H. Bliss, Nuclear Licensing Manager R. L. Bax, Plant Manager DCD/DCB (RIOS)
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Licensing Fee Management Branch i
Resident Inspector, RIII
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Richard Hubbard
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J. W. McCaffrey, Chief, Public
Utilities Division
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LChandl JLieberman JTaylor i
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Commonwealth Edison Company
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OCT 21 1988
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DISTRIBUTION:
.SECY CA JMTaylor, DEDO-JLieberman, OE
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ABDavis, RIII
RPerfitti, OE i
HWong, OE r
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Enforcement Coordinators
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RI, RII, RIII, RIV, RV i
FIngram, PA EJordan, AE00 l
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BHayes, 01
SConnelly, OIA
LChandler, OGC t
BSummers, OE (Ltr Head)
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