ML20149L905
| ML20149L905 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  |
| Issue date: | 11/02/1987 |
| From: | Kane W NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | Tiernan J BALTIMORE GAS & ELECTRIC CO. |
| References | |
| CAL-87-15, EA-87-218, NUDOCS 8802250129 | |
| Download: ML20149L905 (4) | |
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NOV 021987 Docket No. 50-317 CAL No.
87-15 EA No.87-218 Baltimore Gas and Electric Company ATIN: Mr. J. A. Tiernan Vice President Nuclear Energy Post Office Box 1475 Baltimore, Maryland 21203 Gentlemen:
Subject:
Confirmatory Action Letter 87-15; No.12 Auxiliary Feedwater Pump Operability Refreences:
(a) Telephone Conference Between Your Mr. J. R. Lemons and Mr. W. F. Kane of NRC on October 30, 1987 (b) BG&E Letter of November 2,1987, f rom J. R. Lemons to NRC,
Subject:
Justification for Operability:
No. 12 Auxiliary Feedwater Pump On October 23, 1987, the Number 12 Auxiliary Feedwater Pump (#12 AFWP) throttle valve tripped on overspeed during the conduct of Surveillance Test Procedure, STP 0-9A-1 (Auxiliary Feedwater Actuation System ( AFAS) Monthly logic Test).
In further testing over the following seven days, numerous turbine trips occurred raising concerns regarding the operability of that pump.
These trips were apparently caused, in part, by condensation in the steam supply lines and wear of the throttle control system.
On October 30,1987, you implemented a revised procedure under which the pump would be idled by steam at 1000-1200 rpm in order to keep the inlet steam piping warm and free from condensation, and you declared the pump operable.
Based on our concerns regarding your basis for this operability determination, a telephone call was conducted with Mr. J. R. Lemons of your staff to discuss this matter.
Based on that telephone call and on the commitments documented on Reference B, we understand that, until the question of reliability for the
- 12 AFWP is resolved, you will take or have taken the following actions:
1.
Operate #12 AFWP at about 1000-1200 rpm to ensure it is properly warmed and ready for startup and automatic flow initiation, if needed.
2.
Conduct a daily start of #12 AFVP, simulating demand of the pump without operator action to control speed, etc., and communicate results to NRC Region I office.
OFFICIAL RECORD COPY CAL CC-1 87 0001.0.0
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3.
Assign an additional
- operator, above minimum staffing requirements, trained and qualified to operate the AFW system in its current condition, who will monitor performance of the tests and transient conditions resulting in AFW pump demands.
4.
Implement procedures which specify how to correct an overspeed condition or governor hunting problem on the pump.
5.
Provide guidance on the response time for the dedicated operator in the event that an AFW pump demand is received.
6.
Provide dedicated communications between the control room and the dedi-cated operator via a headset in the AFW pump room.
7.
Initiate an orderly shutdown of Unit 1 in accordance with Technical Specification 3.7.1.2, Action Statement a.2.(b) if reliability has not been sufficiently improved by Friday, November 6, 1987 at 07:33 a.m.
"Sufficiently improved reliability" is understood to mean that the #12 AFWP is capable of being started and operated under simulated AFAS conditions, the pump having been idle (i.e., not rotating) for at least four hours with no operator action with respect to the pump, including its steam supply system, during this period, lhis letter does not preclude enforcement action should subsequent review of the circumstances surrounding the matter so dictate.
If your understanding of the actions to be taken are different from those described above, please contact this office within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> of receipt of this letter.
Thank you for jour cooperation.
Sincerely, Origir.1 Sig.m p ;
y William F. Kane, Director Division of Reactor Projects i
OFFICIAL RECORD COPY CAL CC-1 87 0002.0.0 11/02/87
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cc:
M. Bowman, General Supervisor, Technical Services Engineering Thomas Magette, Administrator, Nuclear Evaluations D. W. Latham, Director, Security Services (Safeguards Only)
H. D. Coss, Vice President, General Services (Safeguards Only)
J. W. Ross, Jr., Security Planning and Programs Specialist (Safeguards Only)
L, P. Gibbs, General Supervisor, Nuclear Security Operations (Safeguards Only)
Public Document Room (PDR) local Public Document Room (LPDR)
Nuclear Safety Informatian Center (NSIC)
NRC Resident Inspector State of Maryland (2) bec w/ encl:
Region I Docket Room (with concurrences)
DRP Section Chief T. Kenny, SRI, Salem S. McNeil, LPM, NRR R. J. Bores, DRSS J. Lieberman, OE B. Clayton, EDO D. Holody, ES W. Kane, DRP S. Collins, DRP J. Wiggins, DRP L. Tripp, DRP D. Lieroth, DRP
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H. D. Coss, Vice President, General Services (Safeguards Only)
J. W. Ross, Jr., Security Planning and Programs Specialist (Safeguards Only)
L. P. Gibbs, General Supervisor, Nuclear Security Operations (Safeguards Only)
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Nuclear Safety Information Center (NSIC)
NRC Resident Inspector State of Maryland (2) bec w/ encl:
Region I Docket Room (with concurrences)
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OFFICIAL RECORD COPY CAL CC-1 87 0003.0.0 11/02/87