ML20154C028
| ML20154C028 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley |
| Issue date: | 05/10/1988 |
| From: | Zech L NRC COMMISSION (OCM) |
| To: | Heinz J SENATE |
| Shared Package | |
| ML20154C032 | List: |
| References | |
| NUDOCS 8805180018 | |
| Download: ML20154C028 (1) | |
Text
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Distribution:
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NUCLEAR HEGULATORY COMMISSION gea DR D 4 r/t W ASHINGTON, D. C. 20555
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E00 r/f JLieberman TMurley/JSniezek BHayes CHAIRMAN May 10, 1988 FMiraglia JMurray PDI-4 r/f TMartin SVarga (2)
FGillespie BBoger 0GC The Honorable John Heinz CA United States Senate SECY Washington, D.C.
20510 VStello JTaylor
Dear Senator Heinz:
TRehm DMossburg I am responding to your March 30, 1988 letter in which you expressed concern about engineering work done several years ago at Duquesne Light Company's Beaver Valley 1 plant by Schneider Consulting Engineers (SCE).
These issues received attention in an article that appeared in the Pi_ttsburgh Pre _ss on March 27, 1988.
The article is based on an unsigned internal SCE memorandum dated December 24, 1980, alleging that some piping stress analyses 4
performed by SCE may have been inadequate.
As part of their review of the allegation, the NRC staff requested the Duquesne Light Company on March 23, 1988, to investigate the circumstances surrounding the SCE memorandum and provide a report on its findings and conclusions.
Duquesne light Company responded on April 13, 1988.
A copy of Duquesne Light Company's letter is enclosed for your information.
Their letter is currently under review by the staff.
The results of the staff's review will be documented in an inspection report and regulatory action will be taken, if appropriate.
As you requested, we will be pleased to provide you a copy of the report when it is available.
Sincerely,
{s.4mw.
l%
l Lando W. Ze
, JrL
Enclosure:
As Stated a
Originated:
NRR:PTam 8805180018 080510 PDR ADOCK 05000334 p
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April 13, 1988 U. S. Nuclear Regulatory Commission Attn:
Document Control Desk Washington, DC 20555 1
Beaver Valley Power Station, Unit No. 1
Reference:
Docket No. 50-334, License No. DPR-66 Overstressed Piping Allegation Gentlemen:
This letter is in response to your letter dated March 23, 1988 regarding the December 24, 1980 memo from Mr. Bal Gupta to Mr. Chuck McCullough.
We have thoroughly reviewed this matter and the fc11owing information is provided in this regard.
In December
- 1980, there were three consulting firms, including Schneider Consulting Engineers (SCE),
providing piping analysis services to Duquesne Light Company (DLC).
The referenced memo was an internal SCE
- document, which was unknown to DLC until it was the Pittsburgh Press to the DLC Media Relations submitted byand subsequently issued to other government officials and Department, When Duquesne Light Company became aware of the potential the NRC.
in the memo, we initiated a comprehensive review problem alluded to of our plant records.
This review concluded that the condition identified in the memo the BV-1 reactor coolant pump cooling water piping which is not a
portion of the reactor coolant system pressure boundary.
referred to These cooling water lines are provided to the three reactor coolant pumps for lube oil and motor cooling during normal operation.
The potential overstress condition existed on two of the three pumps had similar piping configurations.
This overstress problem was j
which reported by SCE to DLC in their letters dated December 3 and December 18, 1980.
The piping to the lube oil and stator coolers are defined as non-safety related and as
- such, are not required for safe plant
- shutdown, or to mitigate the consequences of an accident.
These lines are
- isolated, under accident conditions, by a containment Isolation Phase "B" (CIB) signal.
Following DLC engineering review of the December 18, 1980 letter, corrective action was initiated in accordance with project Documentation of this modification was furnished to the procedures.
Department by Engineering Change Notice (ECN)
Construction 305.
305-521-OEG, and dispositioned under Design Change Package (DCP) 9 9 n u i (RM, R n.
g
6 Baavor Valley Power Station, Unit Nos. 1 Docket No. 50-334, License No. DPR-66 Overstressed Piping Allegation Page 2 i
Since the scope of the SCE effort included both safety related and nonsafety related
- piping, their contract provided for the implementation of a
documented Quality' Assurance Program which was reviewed and approved by DLC.
The contractor's efforts were also monitored by DLC Engineering and their activities were audited satisfactorily by the DLC Quality Assurance Department during the course of their contract.
4 In conclusion, the overstress conditions alluded to in the memo were properly identified, evaluated and resolved in accordance with DLC project procedures.
If any further information is desired, please contact my office.
Very truly yours, h
J. D. Sieber i
Vice President, Nuclear cc:
Mr.
J. T. Wiggins, NRC Mr. J. Scall, Sr. Resident Inspector Mr. W. T.
Russell, NRC Region I Administrator I
Mr. P. Tam, Project Manager 4
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