ML20064L514
| ML20064L514 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  |
| Issue date: | 03/18/1994 |
| From: | Denton R BALTIMORE GAS & ELECTRIC CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| Shared Package | |
| ML20064L517 | List: |
| References | |
| NUDOCS 9403250097 | |
| Download: ML20064L514 (3) | |
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Konyn r E.1)ENTom flattimore Gas and Electric Company Calvert Clifs Nuclear Power Plant Vice l'rrsident 1650 Calvert Clif9 Parh ay Nuclear Encre*v Imhy, Maryland 206 7 5
110 586-2200 [ht.t.j55 incal 410 26<ht455 Baltimore l
March 18,1994 l
U. S. Nuclear Regulatory Commission Washington, DC 20555 ATTENTION:
Document Control Desk l
1 i
9UBJECT:
Calvert Cliffs Nuclear Power Plant l
Unit No. 2; Docket ho. 50-318 i
l Analysis of the Calvert Cliffs Unit No. 2 Reactor Vessel Surveillance Capsule l
Withdrawn from the 97'F Location 1
Pursuant to 10 CFR Part 50, Appendix H, Baltimore Gas and Electric Company (BGE) hereby i
submits a summary technical report on the subject reactor vessel surveillance capsule. Appendix 11 requires the repgtt to be submitted within one year after capsule withdrawal unless an extension is granted. The 97 location surveillance capsule was withdrawn on March 20,1993.
The 97 location surveillance capsule is the second capsule withdrawn from the Calvert Cliffs Unit 2 reactor vessel beltline region. The capsule was removed and evaluated after being irradiated in the Unit 2 reactor vessel as part of the reactor vessel materials surveillance program. The objective of the program is to monitor irradiation-induced changes on the reactor vessel beltline material properties.
The capsule analysis results indicate that the tensile specimens are exhibiting normal behavior relative to neutron fluence exposure. The Charpy impact specimens exhibited the characteristic shift to higher temperature for thg 30 ft-lb transition temperature and decrease in upper-shelf energy.
Overall, the results of the 97 location capsule evaluation demonstrate that the current techniques used for predicting the change in the fracture toughness properties due to neutron irradiation and thermal environment are conservative. A change in the Technical Specifications is not required.
Should you have any further questions regarding this matter, we will be pleased to discuss them with you.
Very truly yours, nan n-
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Attachment Analysis of the Calvert Cliffs Nuclear Power Plargt Unit No. 2 Reactor Vessel Surveillance Capsule Withdrawn from the 97 Location of the Beltline Recion (BAW-2199, February 1994) 9403250097 940318
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PDR ADOCK 05000318 P
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Document Control Desk March 18,1994 Page 2 cc:
(With Attachment)
T. T. Martin, NRC P. R. Wilson, NRC (Without Attachment)
D. A. Brune, Esquire J. E. Silberg, Esquire R. A. Capra, NRC D. G. Mcdonald, Jr., NRC R. I. McIxan. DNR J. H. Walter, PSC i
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i ATTACHMENT 1
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Analysis of the Calvert Cliffs Nuclear Power Plant t
Unit No. 2 Reactor Vessel Surveillance Capsule Withdrawn from the 97* Location of the Beltline Region i
(IIAW-2199, February 1994) l l
Baltimore Gas and Electric Company Docket No. 50-318 j
March I8,1994
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