ML20054D095
| ML20054D095 | |
| Person / Time | |
|---|---|
| Site: | La Crosse File:Dairyland Power Cooperative icon.png |
| Issue date: | 04/14/1982 |
| From: | Linder F DAIRYLAND POWER COOPERATIVE |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| LAC-8215, RO-82-05, RO-82-5, NUDOCS 8204220334 | |
| Download: ML20054D095 (2) | |
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(608) 788-4000 gg April 14, 1982 In reply, please refer to LAC-8215 DOCKET NO. 50-409 Mr. James G. Keppler, Regional Director U. S. Nuclear Regulatory Commission g
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SUBJECT:
DAIRYLAND POWER COOPERATIVE
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' A (, / 3 LA CROSSE BOILING WATER REACTOR (LACBWR) r.
PROVISIONAL OPERATING LICENSE NO. DPR-45
%W REPORTABLE OCCURRENCE NO. 82-05 Q,
REFERENCES:
(1) LACBWR Technical Specifications, Section 6.9.1.8.1 (2) DPC Letter, Linder to Director NRR, LAC-5478, dated Septenber 26, 1978 (3) DPC Letter, Linder to Crutchfield, LAC-8214, dated April 13,1982
Dear Mr. Keppler:
In accordance with Reference 1, this is to inform you of a discrepancy discovered in the seismic and stress analysis of the High Pressure Core Spray (HPCS) System piping. The analysis was transmitted to the Nuclear Regulatory Commission in Reference 2 as part of the Full Term Operating License effort.
The discrepancy mainly involved differences in the as-installed material and configuration of a 10 inch section of 1-1/2 inch diameter discharge piping versus the analytical model. An investigation is being conducted to determine whether the error significantly degrades the safety margin of the HPCS System.
It is not expected that the discrepancy will have significant impact.
A request that any NRC review of the analysis be temporarily held in abeyance pending resolution of the problem has been transmitted to the Office of Nuclear Reactor Regulation (Reference 3).
The reactor is presently shutdown for a refueling outage. The piping will be inspected to ensure its configuration is accurately defined on plant drawings.
Further information will be presented in the 14 day report.
-WP-6 APR 16 SE O204220334 820414 DRADOCK05000g pd
- Mr.-James G. Keppler, Regional Director April 14,1982 U. S. Nuclear Regulatory Commission LAC-8215 Prompt notification of this event was made to M. Branch, NRC Resident Inspector, on April 13, 1982.
If there are questions regarding this notification, please contact us.
Very truly yours, DAIRYLAND POWER COOPERATIVE
%dAIDj qtkuYJL Frank Linder, General Manager FL :LSG:ene Enclosures cc:
Director, Office of Inspection and Enforcement (30)
U. S. Nuclear Regulatory Commission Washington, D. C.
20555 Director, Office of Management Information (3) dnd Program Control U. S. Nuclear Regulatory Commission Washington, D. C.
20555 NRC Resident Inspector INPO WP-6