ML19309H588
| ML19309H588 | |
| Person / Time | |
|---|---|
| Site: | La Crosse File:Dairyland Power Cooperative icon.png |
| Issue date: | 05/06/1980 |
| From: | Linder F DAIRYLAND POWER COOPERATIVE |
| To: | Harold Denton Office of Nuclear Reactor Regulation |
| References | |
| RTR-NUREG-0578, RTR-NUREG-578 LAC-6902, NUDOCS 8005130538 | |
| Download: ML19309H588 (3) | |
Text
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8 0 U5 30'38 DlDA/RYLAND h
k OOPERAT/VE eo Box si7. reis EAST AV SOUTH. LA CROSSE WSCOr SW 601 t608} 788-4000 May 6, 1980 In reply, please refer to LAC-6902 DOCKET NO. 50-409 Director of Nuclear Reactor Regulation ATTN:
Mr. ifarold Denton, Director Office of Nuclear Reactor Regulation U.
S. Nu.: lear Regulatory Commission Washington, D.
C.
20555
SUBJECT:
DAIRYLAND POWER COOPERATIVE LA CROSSE BOILING WATER REACTOR (LACBWR)
PROVISIONAL OPERATING LICENSE NO. DPR-45 ADDITIONAL INFORMATION - THREE MILE ISLAND LESSONS LEARNED (NUREG-0578 )
Reference:
(1)
DPC Letter, Linder to Denton, LAC-6860, dated April 14, 1980.
Gentlemen:
The attached information is in response to a request for additional information resulting from a site review of compliance with NUREG-0578.
If you have any questions regarding this submittal, please contact us.
Very truly yours, DAIRYLAND POWER COOPERATIVE 7
4AW
/
Frank Linder, General Manager FL:LSG:af Attachment cc:
J.
Keppler, Reg. Director, NRC-DRO III l
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m.
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NRC REQUEST:
2.1. 6 a (1)
Provide the measured leak rate data, tuo veeks after startup fron April, 1980 outage, for the off-gas ayatem, component cooling vater ayatem (i.e., outside containment) and isolation condenser vent to off-gas ayaten.
DPC RESPONSE:
Attached is the report on the leakage tests of the two presently installed systems outside containment which may contain radioactive materials after an accident.
Leakage testing will be performed on the sampling system after it is installed and during each refueling outage thereafter.
I
LEAKAGE TESTING OF SYSTEMS OUTSIDE CONTAINMENT WHICH MAY CONTAIN RADIOACTIVE MATERIALS AFTER AN ACCIDENT I.
Component Cooling System The first test of the integrity of the Component Cooling Water (CCW) System was successfully performed on April 17, 1980.
For the first test, the system was pressurized to 75 psig, rather than 52 psig as will be utilized in the future based on the pressure the system could possibly see after an accident if the boundary between this system and the primary system does not hold, in order to also perform post-installation testing of the new isolation valve installed in the CCW Surge Tank Overflow Line.
No leakage was observed from the CCW lines outside containment.
Welded and threaded connections on the surge tank overflow and vent lines up to and including the first isolation valves in each line were snooped for air leakage.
None was found.
Therefore, the integrity of the portion of the CCW system outside of contain-ment was demonstrated.
II.
Off-Gas System The test of the integrity of the off-gas system and shutdown condenser vent line to the off-gas system was successfully per-formed on April 18-19, 1980.
The system was pressurized to 6 psig based on the pressure the system could see after an accident if the Off-Gas Vent Automatic Valve did not reseat and hold.
The pressure drop measured over a 24-hour period was 1.6 psig, which is within the acceptance criteria.
Therefore, the test result was acceptable and the integrity of the off-gas system demonstrated to be satisfactory.
I