ML18025B907
| ML18025B907 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 01/11/1983 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML18025B908 | List: |
| References | |
| IEB-79-01, IEB-79-1, NUDOCS 8301190138 | |
| Download: ML18025B907 (9) | |
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UNITED STATES N
CLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 SAFETY EVALUATION BY THE
. OFFICE OF NUCLEAR REACTOR REGULATION TENNESSEE VALLEY AUTHORITY BROMNS FERRY UNIT NOS. 1, 2
AND 3 DOCKET NOS. 50-259, 50-260 AND 50-296 ENVIRONMENTAL QUALIFICATION OF SAFETY-RELATED'LECTRIC EQUIPMENT INTRODUCTION General Design Criteria 1 and 4 specify that safety-related electrical equipment in nuclear facilities must be capable of performing its safety-related function under environmental conditions associated with all
,normal,
- abnormaT, and.accident plant 'operation.'n order to ensure com-pliance with the criteri a, the,NRC staff required all licensees of operating reactors to submit a re-evaluation of the qualification of safety-related electrical equipment which may be exposed to a harsh environment.
BACKGROUND On February 8,
1979, the NRC Office of Inspection and Enforcement (IE) issued t'o all licensees of operating plants (except those included in the systematic evaluation program (SEP))
IE Bulletin (IEB) 79-01, "Environ-mental Qualification of Class IE Equipment. "
This Bulletin, together with IE Circular 78-08 (issued on May 31, 1978), required the licensees to perform reviews to assess the adequacy of their environmental qualifica-tion programs.
On January 14, 1980, NRC issued. IE Bulletin 79-01B which included the DOR guidelines and NUREG-0588 as attachments 4 and 5, respectively.
Subse-
- quently, on May 23, 1980, Commission Memorandum and Order CLI-80-21 was issued and stated the DOR guidelines and portions of NUREG-0588 form the requirements that licensees must meet regarding environmental SSO<ceOSSB eSO<i.c r DR WDOCi a5OOO2S~
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qualification of safety-related electrical equipment in order to satisfy those aspects of 10 CFR 50, Appendix A, General Design Criterion (GDC) 4.
Supplements to IEB 79-01B were issued for further clarification and definition of the staff's needs.
These supplements were issued on February 29, September 30, and October 24, 1980.'I In addition, the staff issued orders dated August 29, 1980 (amended in r
September 1980) and October 24, 1980 to al'l licensees.
The August order
'equired that the licensees provide a report, by November 1, 1980, docu-menting the qualification of safety-related electrical equipment.
The October order required the establishment of a central file location for the maintenance of all equipment qualification'records.
The central file was mandated to be established by December 1, 1980.
.The staff subsequently issued Safety Evaluation Reports (SERs) on environmental qualification of safety-related electrical equipment to licensees of all operating plants in mid-1981.
These SERs directed licensees to "either provide documentation of the missing qualification information which demonstrates that safety-related equipment meets the DOR Guide-lines or NUREG-0588 requirements or commit -to a corrective action (re-qualification, replacement (etc.)).".Licensees were required to respond to NRC within 90 days of receipt of the SER.
In response to the staff SER issued June 3, 1981, the licensee submitted additional information regarding the qualification of safety-related electrical C
equipment.
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EYALUATION The acceptability of the licensee's equipment environmental qualification program was reviewed for the Division of Engineering by the Franklin Research Center (FRC) as part of the NRR Technical Assistance Program in support of NRC operating reactor licensing actions.
The consultant's review is documented in the re'ports "Review of Licensees Resolutions of Outstanding Issues from NRC Equipment Environmental gualification.Safety Evaluation Reports," which are attached.
We have reviewed the evaluation performed by our consultant contained in the'enclosed Technical Evaluation Reports (TER) and concur with their bases and findings.
Our review has also revealed certain. discrepancies'n the TERs which are beinq corrected by this Safety Eyaluation (SE) as follows:
o Delete the third paragraph on page 1-9 of the TEPs.
o Delete the second paragraph on page 1-10 of the TERs.
The staff has also reviewed the licensee's justification for continued operation regarding each item of safety-re1ated electrical equipment identified by the licensee as not being capable of meeting environmental qualification requirements f'r the service conditions intended.
CONCLUSIONS Based on the staff's review of the enclosed Technical Evaluation Reports and the licensee's justification for continued operation, the following conclusions are made regarding the qualification of safety-related elec-trical equipment.
Continued operation until completion of the licensee's environmental qualification program will not present undue risk to the public health and safety.
Furthermore, the staff is continuing to review the licensee's environmental qualification program.
If any additional qualification deficiencies are identified during the course of this review, the licensee will be required to reverify the justification for continued I
operation.
The staff will review this information to ensure that t
continued'pera'tion until,completion of the licensee's environmental.
qualification program will not present undue risk to the public health and safety; The major qualification deficiencies that have been identified in the enclosed FRC TERs (Tables 4-1, 4-2, 4-3 and 4-4) must be resolved by the licensee.
Items requiring special attention by the licens'ee are summarized below:
o Submission of information within thirty (30) days for any of the NRC categories I.b, II.a and II.b for which justification for continued operation was not previously submitted to NRC or FRC.
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The licensee must provide the plans for qualification or replacement of the unqualified equipment and the schedule for accomplishing its proposed correction action.
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d PROPRIETARY REVIEW Enclosed in the FRC Technical Evaluation Reports (TER) are certain identi-
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1 During the preparation of the enclosed TERs, FRC used, test reports and h
other documents supplied by the licensee that included material claimed to be proprietary by their owners and originators.
NRC is now prepar-ing to publicly release the FRC TERs and it is incumbent on the agency to seek review of all claimed proprietary material.
As such, the licensee is requested to review the enclosed TER with,their owner or originator and notify NRR within seven (7) days of receipt of this SER whether any portions of the identified pages still require proprietary protection.
If so, the licensee must clearly identify this information and the specific rationale and justification for the protection from public disclosure, detailed in a written response within twenty (20) days of receipt of this SER.
The level of specificity necessary for such continued protection should be consistent with the criteria enumerated in 10 CFR 2. 790(b) of the Commission's regulations.
D d
JPN lt 1983 Principal Contributor:
P.
Shemanski