ML20097D065

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Forwards Response to Three Open Items Identified in NRC 840716-18 Environ Qualification Audit
ML20097D065
Person / Time
Site: Fermi DTE Energy icon.png
Issue date: 09/07/1984
From: Jens W
DETROIT EDISON CO.
To: Youngblood B
Office of Nuclear Reactor Regulation
References
EF2-72237, NUDOCS 8409170361
Download: ML20097D065 (6)


Text

+ e Wayne H. Jens Vice President Nctw Operatoes l

Fems-2.

Edison =6400 NMh =r Dme '" Highw:iy September 7, 1984 EF2-72237 Director of Nuclear Reactor Regulation Attention: Mr. B. J. Youngblood, Chief Licensing Branch No. 1 Division of Licensing U. S. Nuclear Regulatory Commission Washington, D.C. 20555

Reference:

Fermi 2 NRC Docket No. 50-341

Subject:

petroit Edison's Response to Open Items Identified in NRC Environmental Qualification Audit, July 16-18, 1984

Dear Mr. Youngblood:

During the course of the NRC Equipment Qualification Audit conducted on July 16-18, 19 84 by Mr . A . S. Masciantonio of your EQ branch, three open items were identified relating to the Fermi-2 EQ program. This letter provides Detroit Edison's responses / commitments to these open items.

The three open items which were identified during the EQ audit are as follows:

1. Fermi-2 is to develop and implement a surveillance program for cable inside the drywell to detect the degradation caused by synergistic effects of low dose rate radiation and temperature.
2. Fermi-2 is to revise the existing qualification central files to document, in more detail, the evaluation of the acceptance criteria established for Fermi-2 specific applications as compared to the results and anomalies identified in the test report for qualified components.
3. Fermi-2 is to address post-accident accuracy requirements for certain instruments contained in the Fermi-2 NUREG-0588 submittal, dated July, 1983.

do1f 8409170361 840907 PDR ADOCK 05000341 A pgg.

m Mr. B. J. Youngblood September _7, 1984 EF2-72237 Page 2

. The Detroit; Edison Responses / commitments to the above three

, . items are contained in Attachments 1, 2 & 3 respectively.

If you have any further questions on this matter, please contact Mr. O. K. Earle (313) 586-4211.

Sincerely,

/

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! l All with attachments cc: P. M. Byron M. D. Lynch A. S. Masciantonio USNRC, Document Control' Desk Washington, DC 20555 f'

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Mr. B. J. Youngblood  ;

September 7, 1984 EF2-72237 '

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ATTACHMENT 1 Open Item: Open Item: Fermi-2 is to develop and implement a surveillance program for cables inside the drywell to detect the degradation caused by synergistic effects of low dose rate radiation and temperature.

Response: Detroit Edison is investigating the EPRI/ University of Connecticut Program (RP1707-13) for the study of natural / artificial equipment aging. Specifically, we plan to participate in the study of cables located in reactor containments. This program will provide data on material aging of cables actually installed in reactor containments and compare these results to what would be predicted using currently accepted aging techniques. One of the objectives of this program is to provide i a basis for more reliable lifetime predictions for cable. Results of the program are also expected to help resolve the issue of synergistic

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effects.

ll Participation in this program will provide Edison with '

4, substantial information on natural cable aging and will allow us to better judge the validity of the previous environmental testing performed and identify possible future actions to be taken to maintain cable inside the drywell in an operabic state. The participation in this program and the evaluation of the results as it applies to Fermi-2 will alleviate the above mentioned NRC open item.

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,  : Open Item: . Fermi-2 is to revise the existing Qualification Central LFiles to document, in more detail, the' acceptance criteria established for. Fermi-2 specific applications

'as compared to the results and anomalies identified in-

_ the test report for qualified components. '

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Res ponse: Detroit Edison' has .re-reviewed:all Qualification-

- Central Files for qualified equipment contained in our.  !

Response to NUREG-0588, dated July 1983. Out of a

total of.46. existing Central ~ File Packages , a total of -

-28 central file packages will require revision to

-address a more_ detailed explanation of the test results', particularly anomalies, as compared to Fermi-2

. applications. .These anomalies were either resolved by the manufacturers in the test reports or by Detroit Edison when' preparing the QER (Qualification Evaluation Reports). The evidence that resolutions are acceptable for Fermi-2 specific applications however, in~all

c ' cases,.are not documented. Of the files that were

,. Laudited by the NRC EQ reviewer,' resolutions provided C were acceptable txi him. These resolutions provide supplemental justification to 'the qualification status of the equipment. We expect that this. central file revision will be comple'ted prior to fuel load.

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ATTACRMENT 3 Open ' Item: . Fermi-2 is to address. post-accident accuracy require-

", ments for certain instrumenta-contained in the Fermi-2 NUREG-0588 submittal, dated July 1983.

Res ponse : Post-accident accuracy requirements'for certain instru-ments contained in the Fermi-2 NUREG-0588 submittal dated. July'1983 vill be addressed. This effort will be in concert with che proposed program of the LRG Instru-mentation Setpoint Methodology Group described in a June 29, 1984 letter from J. F. Carolan to T. M. Novak.

This is consistent with the response given during the NRC audit.

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