ML20136H305
| ML20136H305 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  |
| Issue date: | 03/13/1997 |
| From: | Cruse C BALTIMORE GAS & ELECTRIC CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| GL-96-05, GL-96-5, NUDOCS 9703190111 | |
| Download: ML20136H305 (599) | |
Text
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CH ARLEs II. CRt!SE Baltimore Gas and Electric Company Vice President Calvert Cliffs Nuclear Power Plant Nuclear Energy 1650 Calvert Cliffs Parkway Lusby, Maryland 20657 410 495-4455 March 13,1997 U. S. Nuclear Regulatory Commission Washington, DC 20555 ATTENTION:
Document Control Desk
SUBJECT:
Calvert Cliffs Nuclear Power Plant Unit Nos.1 & 2; Docket Nos. 50-317 & 50-318 180-Day Response to Generic Letter 96-05, " Periodic Verification of Design-Basis Canability of Safetv-Related Motor-Operated Valves"
REFERENCES:
(a)
Letter f om Mr. T. T. Martin (NRC) to Mr. C. H. Cruse (BGE), dated September 18,1996, NRC Generic Letter 96-05: " Periodic Verification of Design-Basis Capability of Safety-Related Motor-Operated Valves" (b)
Letter from Mr. C. H. Cruse (BGE) to the NRC Document Control Desk, dated November 15,1996,60-Day Response to Generic Letter 96-05,
" Periodic Verification of Design-Basis Capability of Safety-Related Motor-Operated Valves" The purpose of this letter is to forward our 180-day response to Reference (a). The generic letter was issued to request a written summary description of our program which periodically verifies that safety-related, motor-operated valves are capable of performing their safety and current licensing basis functions, n
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Attachment (1) contains our detailed response to the information requested.
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o Document Control Desk March 13,1997 Page 2 1
Should you have questions regarding this matter, we will be pleased to discuss them with you.
j Very truly yours,
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STATE OF MARYLAND
- TO WIT:
COUNTY OF CALVERT I, Charles H. Cruse, being duly sworn, state that I am Vice President, Nuclear Energy Division,
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Baltimore Gas and Electric Company (BGE), and that I am duly authorized to execute and file this response on behalf of BGE. To the best of my knowledge and belief, the statements contained in this document are true and correct. To the extent that these statements are not based on my personal knowledge, they are based upon hformation provided by other BGE employees and/or consultants. Such information has been reviewed in accordance with company practice and I believe it to be reliable.
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Subscribed and sworn before me, a Notary Public in and for the State of Maryland and County of A# Ca/ve#this /3 dayof /Phech
,1997.
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i WITNESS my Hand and Notarial Seal:
Notary Public My Commission Expires:
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[ Date CHC/SJR/ dim
Attachment:
(1)
Baltimore Gas and Electric Company's 180-Day Response to Generic Letter 96-05: " Periodic Verification of Design-Basis Capability of Safety-Related Motor-Operated Valves" cc:
D. A. Brune, Esquire H. J. Miller, NRC J. E. Silberg, Esquire Resident Inspector, NRC Director, Project Directorate I-1, NRC R. I. McLean, DNR A. W. Dromerick, NRC J. H. Walter, PSC I
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ATTACHMENT (1) i 1
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BALTIMORE GAS AND ELECTRIC COMPANY'S 180-DAY RESPONSE TO GL 96-05:
i PERIODIC VERIFICATION OF DESIGN-BASIS CAPABILITY OF SAFETY-RELATED MOTOR-OPERATED VALVES 4
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b Calvert Cliffs Nuclear Power Plant Units 1 & 2 March 13,1997
ATTACIIMENT (1)
BALTIMORE GAS AND ELECTRIC COMPANY'S 180-DAY RESPONSE TO GL 96-05: " PERIODIC VERIFICATION OF DESIGN-BASIS CAPABILITY OF SAFETY-RELATED MOTOR-OPERATED VALVES" RE011rRED RESPONSE Within 180 daysfrom the date of this generic letter (GL), Baltimore Gas and Electric Company is required to submit a written summary description ofits motor-operated valve (MOY) periodic verification program established in accordance with the Requesteditctions paragraph.
The requested actions are to establish a program to verify, on a periodic basis, that safety-related MOVs continue to be capable ofperforming their safetyfunctions within the current licensing basis of thefacility. The program should ensure that changes in requiredperformance resulting from degradation (such as those caused by age) can be properly identified and accountedfor. Periodic verification programs in developed in response to GL 89-10 should be reviewed to determine whether any changes are appropriate in light of the information in this GL.
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Response
Baltimore Gas and Electric Company has reviewed its programs to determine whether any changes are appropriate in light of the information in this GL. We are in the process ofjoining the Motor Operated Valve Joint Owners Group (JOG) at this time, and currently plan to transition to the JOG methodology by the end of the planned 1998 refueling outage. Until the transition occurs, our program will contain the following elements:
1.
All safety-related MOVs covered by the GL 89-10 program were included in the development of the periodic verification program.
2.
Static diagnostic tests are used to provide information on the thrust / torque output of the motor actuator and any changes to the motor-actuator output as a result of aging effects.
All GL 89-10 MOVs are statically tested on a frequency not to exceed every three refueling outages.
3.
Motor-operated valves are periodically exercised per our current inservice Testing (IST) program.
4.
Dynamic tests will be performed as part of the JOG program. Information shared as a result of this program will be used to evaluate valve thrust / torque requirements and any changes to those requirements as a result of aging effects. Dynamic testing of JOG selected MOVs will commence by the end of the planned 1998 refueling outage.
5.
Motor-operated valves will be evaluated based on risk insight, and available margin to determine if the need for additional dynamic testing, beyond that called for in the JOG, exists. This evaluation will provide further assurance that the effects of valve aging on thrust / torque requirements are adequately accounted for. Dynamic tests required based l
on this evaluation will be scheduled to commence, when necessary, by the end of the planned 1998 refueling outage.
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ATTACHMENT (1)
BALTIMORE GAS AND ELECTRIC COMPANY'S I
180-DAY RESPONSE TO GL 96-05: " PERIODIC VERIFICATION OFDESIGN-BASIS CAPABILITY OF SAFETY-RELATED MOTOR-OPERATED VALVES" 6.
The program includes evaluation and monitoring of valve performance and maintenance, and periodic adjustment of the periodic verification program, as appropriate (trending).
7.
The use of new industry technology (for example, Motor Power Monitor equipment) continues to be evaluated, and will be used, when appropriate, in our approach to l
periodic verification of MOVs.
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