ML20084J959
| ML20084J959 | |
| Person / Time | |
|---|---|
| Site: | Quad Cities  |
| Issue date: | 04/19/1972 |
| From: | Palmer F COMMONWEALTH EDISON CO. |
| To: | Morris P US ATOMIC ENERGY COMMISSION (AEC) |
| Shared Package | |
| ML20084J962 | List: |
| References | |
| AO-1-72-5, FAP-72-86, NUDOCS 8305190101 | |
| Download: ML20084J959 (2) | |
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50-254 Commonwealth Edison Company Q U A D.CITIE S N U C L E A R POWER STAttOH Address Reply to:
POST CfflCE BOX 216
- CORDOVA, ILUNOIS 61242 S'
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FAP-72-86
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. April 19, 1972 s.
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Dr. Peter.A. Morris, Director U. S. Atomic Energy Commission k.Q!'h. s, '
Division of Reactor Licensing
.M Washington, D.
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20545 License DPR Quad-Cities nuclear
Reference:
Power Station Unit 1 - Section 6.6.A.3 6.6.B.3
Dear Mr. Morris:
This is to report a condition relating to test operation of the Reactor Core Isolation Cooling System on Quad-Cities Muclear Power Station Unit 1.during start up testinr.
The Recctor Core Isolntion Coolinr Sy'-tem failed to perform its intended function at a reactor pressure of 950 psic.
This incident 1-72-5 is reported as an abnormal occurrence.
Incident Descrintion 'and Immediate Action - At 4:30 p.m.
on April ll, 19 7 2, St artup Tes t lio, 14 on the Reactor Core Isolation Coolinr System was being performed at rated reactor pressure.
The "RCIC" sys' tem failed to deliver
. 400 gnn in less than or ecual to 30 seconds.
The system was declared inonerable and the HiFh Pressure Coolant Inj e ction System was satinf actorily teste d imic.cdiatelv and daily aa recuired by the Technical Specification, Seet$en 3 5.E.2.
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Inventication and Corrective Acticn - Investigation revealed
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th at the electrical to hydraulic transducer was not f un c tion--
I ing' properly.
This unit is called the EGR ACTUATOR in the Des cription Manual GEK-9597 - Page 27-16.
The response was slow and believed to be due to shorted turns on a magnetic amplifier.
A new EGR unit was obtained, tested, and RCIC was declared operable on April 18, 1972.
l 8305190101 720419 PDR ADOCK 05000954 nnno s
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o Dr. Peter A. fiorris April 19,1972 Conclusion - The Reactor Core Isolation Cooling System was tested in accordance with the Quad-Cities !!uclear Power Station Startup Test' Instructions and was found deficient.
The cause of the incident 'f as a defective EGR unit which was replaced, tested, and the system was declared operable.
Very truly yours, COW"0!!'dEALTH EDISO'! COMPA!IY Quad-Cities flucicar Power Station
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?.4. Palmer Superintendent FAP/zm I
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