ML20009D606
| ML20009D606 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  |
| Issue date: | 07/20/1981 |
| From: | Lundvall A BALTIMORE GAS & ELECTRIC CO. |
| To: | Rosztoczy Z Office of Nuclear Reactor Regulation |
| References | |
| IEB-79-01B, IEB-79-1B, NUDOCS 8107240214 | |
| Download: ML20009D606 (3) | |
Text
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BALTIM O RE GAS AND ELECTRIC CHARLES CENTER.P. O. BOX 1475 BALTIMORE, MARYLAND 21203 ARTHun E. LUNDVALL JR.
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L Office of Nuclear Reactor Regulation 2
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- U. S. Nuclear Regulatory Commission
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Mr. Zoltan R. Roszteczy, Chief Environmental Qualification Branch
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Subject:
Calvert Cliffs Nuclear Power Plant Units Hos. 1 & 2, Dockets Nos. 50-317 & 50-318 NRC IE Bulletin 79-OlB
References:
(a) NRC IE Bulletin 79-OlB and Supplements.
(b) Letter to A. E. Lundvall, Jr. from R. E. Clark dated 5/28/81.
Gentlemen:
This letter is forwarded for information as requested at the licensee meetings held in Bethesda, Maryland on July 7 throucJi July 10, 1981.
Full assessment of the qualification of IE equipment inside/
outside containment subject to harsh environment vill be completed by June, 1982. This assessment activity vill include.ndependent evaluation of the i
outstanding items addressed in our SER. This evaluation is being done by Wylie Laboratories and vill be completed by December, lo81. As the
- evaluations are received we vill innlement the necessary specifications and purchase docunents to replace any equipment found to have unresolvable qualification problems. A priority exists for assessment of equipment we
-believe may have qualification problems. Several examnles are presented and discussed below:
a) We have ordered transmitters from Barton and Rosemount which are presently undergoing qualification tests. The Barton program is expected to be completed by November, 1981 and the utility sponsored program for Rv;cnount by ?'ay,1982 These vill be installed during our Unit 1 Cycle 6 refueling outage in April, 1982 and Unit 2 Cycle 5 refueling outage in Sentenber, 1982. The completion dates for the programs as indicated are of course predicated upon no problems occurring during the test which could affect the schedules.
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We have committed to replace several solenoid valve assemblies and have recently received pronosals from Ve.lcor and Target Rock calling for delivery in 5 nonths and 12 months, respectively.
D107240214 810720 PDR ADOCK 05000317
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T Mr. Rosztoczy Page 2 July 20, 1981 Reasonable effort vill be made to achieve delivery for installation during our next scheduled refueling outages. Each manufacturer in his proposal indicated that data vill be provided for qualifica-tion by similarity with a model/tyne which has been previously tested to'IEEE 323-1974 and IEEE 3hh-1975 We are still avaiting detailed information on materials from Target Rock so that qualification by similarity can be established for valves previously purchased in December, 1979.
c) We have initiated a qualification program for Devar isolated transmitter and rack assembly. This program was initiated vith Wyle Laboratories in November, 1980 vith connletion not anticipated until September,1931.
d) We are also in the process of developing a perfornance test and qualification test nrogram for a nrototyne nanel mounted indicator manufactured by Sigma with a down scale failure capability. This progran was initiated in May with testing to be done by Wyle Laboratories. The scheduled connletion date for this program is July, 1982.
We believe the above examples reasonably indicate the effort we have undertaken in the past and are presently undertaking to ensure full qualification of IE components for both hazardous as well as nild environ-ments. These also provide an indication of the tine recuired to complete the various qualification efforts. We vill provide additional detail at the comnonent level in our 90 day response to the SER.
However, by keeping in mind the fact that the latest purchase documents vill be issued in early 1982 directly resulting from the ongoing assessments and evaluations, it is probable that equipment deliveries as well as qualification reports may not be realized until 1983.
Ongoing reevaluation of our accident and post-accident environmental parameters as required in our SER results in higher parameters than those originally established at the time our licenses were issued.
This does result in reevaluating and reassessing previously reviewed equipment to these higher values. For exannle Section 3,3 of the SER suggests the application of a saturation tennerature of 296cF. This is a 200F higher value than our previously derived peak temperature. In addition, we are evaluating the radiation source term methodology associated with post-LOCA recirculation fluid lines. The preliminary calculat ons have been comnleted resulting in integrated doses as high as b x 10g' Rads outside containment. The reassessnent of the qualification of affected conponents subjected to the higher temneratures and radiation environment vill be done in a manner consistent with DOR Guidelines and NUREG 0588.
However, the indicated reevaluations and reassessments nay result in replacing existing components with ones qualified to the higher parameters.
Again we v.ll be involved in a similar lead tine activity as discussed earlier which makes the June, 1982 date unachievable.
Major work activities requiring outages are nornally scheduled coincident with planned refueling outages. We are asking you to rive consideration to our refueling schedules when establishing connliance dates. For Unit 1 equipment which cannot be installed by the Cycle 6 refueling outage in April,1982 ve request defernent to the Cycle 7 outace.
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?fr. Fosztoezy Pace 3 July 20, 1981 Considering the cormletion of the qualification nssessnent, evaluation and purchase activity by early 1982, we request deferme"', for the installation of Unit 2 equipnent to the Cycle 5 outage..:heduled for Fentenber, 1982. For equipnent which nay not be available for installation during Cycle 5 ve request deferment to Cvele 6.
Calvert Cliffs is presently on 18 nonth refueling cycles.
Should you have any further questions in this natter, ve would be pleased to discuss then with you.
Very truly yourc c
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cc:
J. A. Biddison, Fsquire G. F. Trowbridge, Esquire Messrs. E. L. Conner, Jr. - URC R. E. Architzel - NRC Resident Inspector
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