ML20198R828
| ML20198R828 | |
| Person / Time | |
|---|---|
| Site: | McGuire, Mcguire  |
| Issue date: | 06/02/1986 |
| From: | Grace J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | Tucker H DUKE POWER CO. |
| Shared Package | |
| ML20198R831 | List: |
| References | |
| EA-86-052, EA-86-52, NUDOCS 8606100229 | |
| Download: ML20198R828 (5) | |
See also: IR 05000369/1986004
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JUN 0 2 886
Docket No. 50-369
License No. NPF-9
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EA 86-52
Duke Power Company
ATTN: #Mr. H. B. Tucker, Vice President
Nuclear Production Department
422 50utt. Church Street
Charlotte, NC 28242
Gentlemen:
SUBJECT: NOTICE OF VIOLATION AND PROPOSED IMPOSITION OF CIVIL PENALTY
(INSPECTION REPORT 50-369/86-04; 50-370/86-04)
This refers to an NRC inspection conducted from January 6 - February 28, 1986,
of activities ~ authorized by License Nos. NPF-9 and NPF-17 for the McGuire Nuclear
Station, Units 1 and 2.
The inspection included the performance of an operational
safety verification and a special review of certain operating events. As a
result of this inspection, failures to comply with NRC regulatory requirements
were identified.
The findings were discussed with those members of your staff
identified in the referenced inspection report and at an Enforcement Conference
held at the NRC Region II Office on February 28, 1986.
The enclosed Notice of Violation and Proposed Imposition of Civil Penalty
involves a failure to meet the Unit 1 Technical Specification (TS) requirements
in that a Limiting Condition for Operation (LCO) was exceeded and appropriate
measures were not taken.
In addition, while the LC0 Action Statement was in
effect, the plant entered Operational Modes 2 and 3 in violation of the TS
requirements. Specifically, following a reactor trip and safety injection (SI)
on November 2,1985, motor operators for the Unit 1 Volume Control Tank's (VCT)
isolation valves INV-141 and INV-142 failed in the closed position.
Subsequent
to the failure, plant staff manually opened the valves.
Duke Power management
erroneously decided that because these valves were not specifically addressed
in the TS and were not a part of any required flow path, the unit could be
restarted with the valves in the open position without violating the TS.
Accordingly, the licensee restarted Unit 1 on November 2, 1985 and entered
Modes 2 and 3 before the valves were repaired on November 4, 1985. After NRC
inspectors brought the matter to its attention, Duke Power Company confirmed
on January 15, 1986 that the unit had been operated in violation of TS 3.5.2
which requires "an operable flow path capable of taking suction from the
Refueling Water Storage Tank (RWST) on a safety injection signal and automatically
transferring suction to the containment sump during the recirculation phase of
operation."
CERTIFIED PAIL
RETURN RECEIPT REQUESTED
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JUN 0 21986
The NRC considers this violation significant because both trains of a safety-
related system were in a degraded condition while in Mode 2.
These valves were
required to isolate the VCT at the initiation of a SI signal so that the SI pumps
would initially take suction from the RWST. With these valves open and inoperable,
water from the VCT with lower boration levels would be pumped into the reactor
coolant system.
In addition, the VCT only has enough water to last approximatly
18 minutes into the safety injection.
After the water supply is exhausted, the
hydrogen used for overpressure could be drawn into the suction of the SI pumps
that potentially may result in gas binding.
The staff recognizes that certain
manual actions could be taken to isolate the VCT.
However, specific procedures
were not in place for these actions and neither the Final Safety Analysis Report
for McGuire, Unit I nor the TS basis assumes such actions.
To emphasize the importance of identifying and correcting plant conditions that
are in violation of TS requirements and to ensure that plant actions do not
adversely affect the ability of safety systems to perform their required functions,
I have been authorized, after consultation with the Director, Office of Inspection
and Enforcement, to issue the enclosed Notice of Violation and Proposed Imposition
of Civil Penalty in the amount of Fif ty Thousand Dollars (550,000) for the
violation described in the enclosed Notice.
In accordance with the " General
Statement of Policy and Procedure for NRC Enforcement Actions," 10 CFR Part 2,
Appendix C (1985) (Enforcement Policy), the violation described in the enclosed
Notice has been categorized as a Severity Level III violation.
The escalation
and mitigation factors in the Enforcement Policy were considered, and no
adjustment of the base civil penalty amount has been deemed appropriate.
You are required to respond to this letter and should follow the instructions
specified in the enclosed Notice when preparing your response.
In your response,
you should document the specific actions taken and any additional actions you
plan to prevent recurrence. After reviewing your response to this Notice,
including your proposed corrective actions, the NRC will determine whether
further NRC enforcement action is necessary to ensure compliance with NRC
regulatory requirements.
In accordance with Section 2.790 of the NRC's " Rules of Practice," Part 2,
Title 10, Code of Federal Regulations, a copy of this letter and the enclosures
will be placed in the NRC's Public Document Room.
The responses directed by this letter and the enclosed Notice are not subject to
the clearance procedures of the Office of Management and Budget as required by
the Paperwork Reduction Act of 1980, PL 96-511.
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JU N 0 21985
Duke Power Company
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Should you have any questions concerning this letter, we will be glad to discuss
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them with you.
Sincerely,
Original signed by
J. Nelson Grace
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J. Nelson Grace
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Regional Administrator
Enclosures:
1.
Proposed Imposition of
Civil Penalty
2.
Inspection Report Nos. 50-369/86-04
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and 50-370/86-04
cc w/encls:
VT. L. McConnell, Station Manager
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