ML20027B544
| ML20027B544 | |
| Person / Time | |
|---|---|
| Site: | Quad Cities  |
| Issue date: | 09/10/1982 |
| From: | Rausch T COMMONWEALTH EDISON CO. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| 4987N, NUDOCS 8209210230 | |
| Download: ML20027B544 (3) | |
Text
P
[O\\ Commonwealth Edison
[
/ One First National Plaza. CNcago, Illinois (O' Address Reply to: Post Office Box 767 Chicago, Illinois 60690 September 10, 1982 PRINCIPAL STAFF Mr. James G.
Kepple r, Director 3
M ll Directorate o f Inspection and 9/fA ENI I Enforcement - Region III W.-
!If U.S. Nuclear Regulatory Commission 6
l W,e M A 0_
799 Roosevelt Road EM$M M-l Glen Ellyn, IL 60137 gESTP _
E fiL OL fitE
]@
Subject:
Quad Cities Station Units 1 and 2 Secondary Capability Test Summary Technical Report NRC Dockets 50-254 ar.d 50-265 Dea r Mr. Keppler:
Attached in accordance with Section 6.6.C.3 and Table 6.6-1, Area A o f Appendix A to DPR-29 and DPR-30, is a summary o f the Secondary Containment Leak Rate Test performed for the Quad Cities Station Units 1 and 2 Reactor Building on September 1, 1982.
This test was performed in accordance with Section 4.7.C.1.c of the Quad Cities Units 1 and 2 Technical Specifications.
This test was performed as part of the Unit 1 pre-outage work, and the results were within the Technical Specifications requirements.
Very truly yours, 1/%/%
Thoma s J.
Rausch Nuclear Licensing Administrator Boiling Water Reactors cc:
Region III Inspector - Quad Cities 1m 4987N SEP 14 8#
82'O 9 2 4 o;2.3 c) p re s
QUAD-CITIES NUCLEAR POWER STATION UNITS 1 AND 2 SECONDARY CONTAINMENT LEAK RATE TEST
SUMMARY
INTRODUCTION Prior to the Unit One Cycle Six Refueling Outage, a Secondary Containment Leak Rate Test was performed on the combined volume of Unit One and Unit Two Secondary Containment Building. The test was performed to demonstrate the ability of the Standby Gas Treatment System (SBGTS) to maintain a one-fourth inch of water vacuum in both Reactor Buildings simultaneously with a filter train flow rate of not more than 4000 cfm.
The test was conducted with a local flow indication of 4000 cfm.
SECONDARY CONTAINMENT CAPABILITY TEST The test was conducted with "A" SBGTS train in prinary by initiating a "Hi" radiation signal in the Units One and Two Reactor Building ventilation monitors.
This action isolated the ventilation systems, stopping all supply and exhaust fans, and started the "A" SBGTS train. When equilibrium condi tions were reached, wall di f ferential pressure readings were taken. "ZERO WIND" data was taken following shutdown of the SBGTS and allowing the building to come to equilibrium with the environs.
TEST RESULTS Data on wind speed, wind direction, building inside and outside temperatures, and dif ferential building pressures were obtained at a SBGTS flow rate of approximately 4000 cfm on the "A" filter train.
The results of the test were corrected to zero wind conditions using flow rates of 0 cfm as the " STATIC" reference.
Corrected data at the flow rate of 4000 cfm, therefore, gauged the rate at which air was exhausted through the system and the amount of in-leaking to the building.
TEST RESULTS CORRECTED TO ZERO WIND CONDITIONS Filter Train:
"A" Flow Rate:
4000 cfm Building Wall DP (Inches of Water)
North: -0.270 South: -0.270 East:
-0.245 West:
-0.255 Average: -0.260 The results of the test indicate that the Standby Gas Treatment Filter train l
Is capable of maintaining one-fourth inch of water vacuum under the calm wind conditions with a filter train flow rate of no more than 4000 cfm.
Average building di f ferential pressure for the train resul ts in -0.260 inches of water, indicating adequate performance of the Secondary Containment and Standby Gas Treatment System l
SUMMARY
OF TEST DATA September 1, 1982 Quad-Cities I and 2 Reactor Building Leak Rate "A" SBGT Train Wall Pressure (inches of water)
Flow (cfm)
NORTH SOUTH EAST WEST 1.
4000
-0.270
-0.270
-0.245
-0.255 2.
0
+0.00
+0.00
+0.00
+0.00
SUMMARY
OF WIND AND TEMPERATURE CONDITIONS O
Temperature (F )
Indoor 99 F
-Outdoor 760F Elevation Above Grade Level Wind Velocity Wind Direction i-(Feet)
(MPH)
NNW 196 13 335 l
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h
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