ML19322A431
| ML19322A431 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 02/22/1976 |
| From: | Colitz J METROPOLITAN EDISON CO. |
| To: | |
| Shared Package | |
| ML19322A432 | List: |
| References | |
| NUDOCS 7910240872 | |
| Download: ML19322A431 (2) | |
Text
O xa= m 9 2~ 73===
?OWist ECtSON COM? ANT suastorsavorcruraat.evaucunuriescoaraasru DOX 480 EMDDt_E. TOWN, PENN6Yt.VAtetA 17057 TELEPHCNEM7 944 4041 Fefwoary 22, 1976 D TSM Mr. J. P. O'ReHTy, Director ooi r
Ofrectorate of Reguintory Oper tions f
D g-m P.egion 1 Guclear Regitiatory Co: mission 1 [
_ ))._k 631 Park Avenue a
King of Prussfa, Pennsylvania 1340G Operating License UPR-59 Docket No. 50-289
SUBJECT:
Reportable Occurrence Ms. 76-9/IP
Dear Mr. 0*Ref1Ty:
This telegram is to confirm the conversation between Mr. Lee foessastt (Region 3-npr) and Mr. J. P. O'HanTor. (Unit 1 FORC Chaimar.-THI) at.
1715 hours0.0198 days <br />0.476 hours <br />0.00284 weeks <br />6.525575e-4 months <br /> on 2"1 February 1976.
The fofTewing re: met is submitted tw accordance witts paragrapft 6.7.2_a.5 (page 6-11) of the Technical Spacffications.
On February 21,197T> at 0140 hours0.00162 days <br />0.0389 hours <br />2.314815e-4 weeks <br />5.327e-5 months <br /> a fatTure of the A Makeup Pun occurred due to closure of a suction cross connect valve while the pump was runnir:g.
The A mkeup Poms had Just been started as part of the pretest system lineup for the perfarnance of the refueling interval 'T5 Systear Sequence and Power Transfer Test."
tion of eithat the A or B The precediere alicwed for opera-Makeup Parrps, but the cretest systect Hneap for valve position was written for operation of the 8 Makeup Pu:na.
The procedure was thorough 7y reviewed by the. Plant Operating Review Conmittee and chanced to allow continuance orf testing using the S and C Makeup Pumps as the ES selected pumps.
successfully completed.
The test was then rurt and 7910240 72 O
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J. P. O'Ref11y 2/22/76 Daring the pump failure, same reactor conlant Tesked out of the puma seal and the degessing of liquid from the spill resulted in a release of radtoactive gas to the Attxiliary Building Exhaust system.
Eased on recorder chart readfirgs front FR-A8, the Auxilicry BuiTding Exbaust radfa. tion effTuent moniter, the average reTeasg/sec., witt> a total rate over the 55 minute peried of thfs release was 1.64 x 102m reIcase of noble gas of.166 Curies.
The radicactive material relessed was predominantly Xenon 133, based on avevious samples.
The instarrtarreous noble gas relesse rate was 3
2.95 x 1C2 0 /sec. wisich is below the technical speciffcatiert linit of 1.2 x IOS nr3/sec.
This facfdent sdll be further reviewed afid appropriate corrective actica will be taken in order to preverst a rect.carrence of this type of incident in the future.
Very truTy yours,
. Coltt Unit 1 Superintendent Three Mile Island f;uclear Station
.