ML19353B012
| ML19353B012 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley |
| Issue date: | 11/22/1989 |
| From: | Russell W NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | Sieber J DUQUESNE LIGHT CO. |
| Shared Package | |
| ML19353B013 | List: |
| References | |
| TAC-61349, NUDOCS 8912110053 | |
| Download: ML19353B012 (3) | |
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NOV 2 2 19 3' Docket Nos.'50-334 50-412 Duquesne Light Company ATTN: Mr. J. D. Sieber Vice President
. Nuclear Group Post Office Box 4 Shippingport, Pennsylvania 15077 Gentlemen:
SUBJECT:
POTENTIALLY INVALID LEAK DETECTION TESTS USED AS AN ALTERNATIVE FOR REQUIRED ASME, SECTION XI HYDROSTATIC TESTS As a result of several inspections by the NRC into the pressure tests conducted at a number of nuclear power plants by HAFA International Incorporated (HAFA) using each licensee's examination procedure as c.n alternativo to the hydrostatic pressure tests required by Section XI of the ASME Code for Class 1, Class 2 and Class 3 components and systems, we have concluded that the tests and, therefore, the test results may be invalid.
These pressure tests were conducted pursuant to the approved topical report, HAFA 135 (P), " Instrumented Inspection Technique As An Alternative To Hydrostatic Testing Requirements for ASME Class 1, 2 and 3 Systems and Components," dated April 1985.
For your further understanding of this issue, we have provided in Attachment 1 a brief technical discussion of the factors which provice the bases for the NRC staff to conclude that the Instrumented Inspection Technique (IIT) tests may be invalid.
Inasmuch as IIT tests were conducted et Beaver Valley Units 1 and 2, we request that you evaluate your examination procedure and the IIT test data.
If you confirm that these tests are invalid, you should identify all ASME Class 1 Class 2 and Class 3 systems and components subject _to the hydrostatic pressure testing requirements of ASME,Section XI, which were tested using the IIT tests described in the topical report cited above.
This should be limited to the time period from November 7, 1985 to the present.
In addition, IIT tests using acoustic emission leak detection instruments only (e.g., tests on steam generators) are beyond the scope of the NRC staff's approval of the HAFA topical report cited above.
In the event that you confirm that the IIT tests conducted at your facility are invalid, you should determine whether the affected systems can be judged functionally OPERABLE based on structural integrity considerations available for the systems.
8912110053 891122 PDR ADOCK 05000334 0
PNU OFFICIAL RECORD COPY STROSNIDER HAFA - 0001.0.0
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Duquesne Light Company 2
If you determine that the components or systems identified are OPERABLE but a question exists as to full compliance with all applicable regulatory requirements, develop corrective actions in accordance with the requirements of Section XVI of Appendix B to 10 CFR Part 50.
The timeliness of corrective actions, if needed, should be consistent with the safety significance of the concern.
We request that you inform the NRC Office of Nuclear Reactor Regulation (with a copy to Region I) of the results of your evaluation of this issue.
Your response should include a list of the subject tests performed between November 7,1985 to present, identification of any tests you have determined to be valid and the basis for that determination, identification of those tests determined to be invalid and associated operability assessments, and any planned corrective actions.
If you have any questions in this matter, please contact Jack Strosnider at 215-337-5198.
Sincerely.
0 i '
.1 Si m a By
,.y William T. Russell Regional Administrator
Attachment:
As stated ec w/ encl:
J. J. Carey, Executive Vice President, Operations J. O. Crockett, General Manager, Corporate Nuclear Services W. S. Lacey, General Manager, Nuclear Operations N. R. Tonet, Manager, Nuclear Engineering T. P. Noonan, General Manager, Nuclear Operations S. C. Fenner, QA Manager K. D. Grada, Manager, Nuclear Safety H. R. Caldwell, General Superintendent, Nuclear Operations Public Document. Room (PDR)
Local Public Document Room (LPDR)
Nuclear Safety Information Center (NSIC)
NRC Resident Inspector Commonwealth of Pennsylvania H.A.F.A. International, Inc.
7545 Central Industrial Drive Riviera Beach, Florida 33404 bec w/ enc 1:
Region I Docket Room (with concurrences)
C. Cowgill, DRP P. Tam, NRR J. Dyer, EDO 0FFICIAL RECORD COPY STROSNIDER HAFA - 0002.0.0 11/15/89
Duquesne Light Company 3
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1/Jo/89 RI:DRS RI:DRP RI:DRS RI:DRS RI:RA J Strosnider Cowgill Durr Hodges Russell 11/l4/89 11/lI/89 11//f/89 11/l[89 11/p /89 0FFICIAL RECORD COPY STROSNIDER HAFA - 0002.0.1 11/15/89 l
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