ML20213G424
| ML20213G424 | |
| Person / Time | |
|---|---|
| Site: | La Crosse File:Dairyland Power Cooperative icon.png |
| Issue date: | 11/10/1986 |
| From: | Taylor J DAIRYLAND POWER COOPERATIVE |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| IEB-86-003, IEB-86-3, LAC-11954, NUDOCS 8611180108 | |
| Download: ML20213G424 (2) | |
Text
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- LACROSSE. W (608) 788-4000 JAMES W. TAYLOR Gzneral Manager November 10, 1986-In reply, please refer to LAC-11954 DOCKET NO. 50-409 Mr. James G. Keppler Regional Director U. S. Nuclear Regulatory Comunission Director of Regulatory Operations Region III 799 Roosevelt Road Glen Ellyn, IL 60137
SUBJECT:
DAIRYLAND POWER COOPERATIVE LA CROSSE BOILING WATER REACTOR (LACBWR)
PROVISIONAL' OPERATING LICENSE NO. DPR-45 IE BULLETIN NO. 86-03 " POTENTIAL FAILURE OR MULTIPLE ECCS PUMPS DUE TO SINGLE FAILURE OF AIR-OPERATED VALVE IN MINIMUM FLOW RECIRCULATION LINE"
Dear Mr. Keppler:
The La Crosse Boiling Water Reactor (LACBWR) has reviewed IE Bulletin NO.
86-03 regarding potential failure of multiple ECCS pumps due to single failure of air-operated valve in minimum flow recirculation line.
The LACBWR design for High Pressure Core Spray (HPCS) does not utilize a minimum flow recirculation line.
The two HPCS pumps are positive displacement types that inject a minimum of 50 gpm per pump to the Core Spray Bundle which distributes the flow to each fuel element.
During Reactor Operating Conditions 1, 2, and 3, these valves are in the de-energized, no actuating pressure position (i.e. fail position).
The air and nitrogen operated valves in this system are always lined up for HPCS operation.
In other words, upon receipt of a manual or automatic signal to initiate HPCS, no valves reposition to direct flow to the fuel elements.
In conclusion, the review indicates LACBWR does not have the problem addressed in this Bulletin.
8611180108 861110 l
EPR ADOCK 05000409 l
E PDR NOV141986' (*
l PCl-13 JE //
sw., A Mr. Jaman G. Keppler November 10, 1986 Regional Director LAC-11954 If you have questions, please contact us.
4 Sincerely, nJd&wm E
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'a V JWT: LWK:sks cc:
Mr. Roby Bevan, LACBWR Project Manager NRC Resident Inspector Document Control Desk STATE OF WISCONSIN )
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COUNTY OF LA CROSSE )
M Personally ca g.,pefore g is day of
, 1986, the above names,F - = W
__,..., to me known to be the person who executed the foregoing instrument and acknowledge the same.
l MJ Notary Pubi g La Crosse County Wisconsin My commission expires February 21, 1988 i
PCI-13 2
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