ML20086E710
| ML20086E710 | |
| Person / Time | |
|---|---|
| Site: | Fort Saint Vrain  |
| Issue date: | 04/10/1973 |
| From: | Walker R PUBLIC SERVICE CO. OF COLORADO |
| To: | Kruesi F US ATOMIC ENERGY COMMISSION (AEC) |
| Shared Package | |
| ML20086E708 | List: |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, NUDOCS 8312070495 | |
| Download: ML20086E710 (3) | |
Text
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public service company ** Collonda P.O. BOX 840 OENVER. COLORADO 80201
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April 10, 1973 Mr. F. E.~Kruesi Directorate of Regulatory Operations United States Atomic Energy Commission Washington, D. C.
20545
SUBJECT:
Deficiency Report 10 CFR 50 Diesel-Generators Emergency Electrical System Fort St. Vrain Station REF: Interim Report Filed Oct;ber 9, 1972
Dear Mr. Kruesi:
-Pursuant to the reporting requirements of.10 CFR 50, we are submitting herewith twenty (20) copies of our final report involving the diesel-generator coolant jacket filling problem. This report is filed to.
finalize the interin report referenced above.
We trust the attached report vill provide you with sufficient information to evaluate both the deficiency and adequacy of the corrective action.'
Very truly yours, hWafA R. F. Walker Vice President i
Engineering and Planning Electr$c Department ec:
Mr. John Flora Director Region IV, Denver RFW:Flet/11 -
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i DEFICIENCY REPORT =
10 CFh 50 - Part 50 55 Facility: Fort St. Vrain Nuclear. Generating Station
Subject:
Standby Diesel-Generators Report Date: April'6, 1973:'
Reference:
Interim Report,.,above' subject, filed October.9, 1972.
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Scope' This reportgis issued to finalize the interim? report A
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e referred above,. to.' supplement' the above_ rsport,with additional s
information on the cause,jand t6 outline' the corrective action taken.
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Cause Determination
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From examination df the drawings 'of the ' engine' codling waterjacket:anddiscussibnwithCaterpillarCp.,-two[fietsemerge';.,
d Firstly, the engines are not 'subjecktofair.-locking'of 'the coolank system when running, nor will an'airDlockl develop wh'en the' engine' -
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is shut-down, providen dhe. head tank level is: maintained.1 _ Secondlyi_
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. air' locks 'are [possib'1bl on refilling. the systemi aft'eii draining,. _
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' regard 1'ess < of;the.methoc of : filling.
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be used on ' system refill, which minimizes th' Echances' of : air-lockb, -,
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