ML19210A185
| ML19210A185 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 05/25/1975 |
| From: | Herbein J METROPOLITAN EDISON CO. |
| To: | |
| Shared Package | |
| ML19210A178 | List: |
| References | |
| 75-01, 75-1, NUDOCS 7910240907 | |
| Download: ML19210A185 (2) | |
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.iCT OFFICE t30M.430 MIDDt.ETOWic PFNNSYLVANIA 17C57 TELE."HONti717 944 4C41 Hay 25, 1975
- ~ ' d U dj/O3 f!r. J. P.. O'r.31lly, Director Directcrate of RcLulatcry i
R3nion I 631 Parh icenua King of Fressia, Pa.
1940G.
. Cparating License D?R-50 Decket 50-2C9
Subject:
I!r.plar.ned rol.tse of radicactiva catdial at TNT id rough th2Trent----
i vant frca the Auxiliary Building.
Daar Hr. O'P.efily, This telorr ;i is to confim the ccnversation hetman Lea Spessard (2cgion I -
ICC), cnd J.J Colitz (TMI - Unit #1 Supaiintendent) at 1345 hours0.0156 days <br />0.374 hours <br />0.00222 weeks <br />5.117725e-4 months <br /> 15 Hsy,.1975.
Cn 24 l"cy bableen 1317 and 1713 inadvertant re cases of radioactiva r.cterial occurred far pario.s of one (1) hour and tsanty-nina (29) minutes and nineteen (19) minutes respectively.
Tha ffret rolcase (1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> and 20 minutes) occurred frcm the Riscellaneous 1:asto Eraucratcr unich tics et t.h time of rele:se, shutdown and valred in to tha radio-cctive C.s vant header.
It is presently pastulated that at.th time of relecse
,.t pmssur.. surga occa:rred in tha venc heccer oue to rea?.e t:p t:a;; vantrng.
. mi s pressura succe was sitsecuently trancmitt d to tha shutdo.sn Fiisc211: nasus Urrota Evaporatcr thich in turn leaked radioactiva gas t2 tha Au::ilitry Suilding Vend!-.
Intien Exhaust Systca.
f.nnylsis of G-i3 rcccrdar chtrts and local Auxiliary Du{ldinq serples indicated th'.! radion:tive cctarial relcased.ms..p,TMantch 7.ch (S53), cnd-that t.h2_...-..-
instantan ous noble r;:s ralsacc rate w s 'i.5C r 'G' M4:ec. IOich is bele:! t.-;
Tec':aic:1 S' ccificatk.a Limit of 1.2 x 103 !P/sec. The cvarar2 ra': esse rate eva:*
tha,cne (1) hr.ur c96 t'ar.ty-nina (29) ;.inute pericd of this relcare was 7.02 x ION W/sec. tiitiv a mtal raicase of 10.C5 curies.
1476 187
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s IC. J. !*. 012:i17y, Director 2.0 Ray 25,1975 This incident ccc:cd the rcT ::co of radicactivo r,aterials [n concentrations rep:::rech.e undar parcgrcph 20.403 (b) (2) of 10 C7;l 20.
Tha tranty-fcur (2",) hour cvorace reicssa rate was 2.C x 10-4 C0i/cc T' is n
exc 2= d, by grc;ter than 500 t9:as, C.e weighted !?C of 2.Csa x 10-/ 601/cc.
l'ai.la ettc: sting to detendne the source of tha Teckage, a second reicase
,cccurrcu. bat;;3 n 1.354 ar.d 1710.
Analysis of Pl?-I.3 recordar chqts indicated that tha' instantaneous noble gas 3 ?/cuc, uhich 1: Dalc.f tha Tec' nical Spacificatica reience rats t;ss R.357 x 13 I
limit of 1.2 :: iga I'.s/sec. The averana raicase rate over the ninatcen (19) cinuta I::r?cd of this reicsco Mas.1..,M x 103 IP/sec. witti a total release of 7 5 M curle.
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Natica will be conductad to dater:nir,e the exact location of the gas
'h:_
.mt feca the Histelicncaus t!.isie Evapcrator.
'3 nec: scary corrective cctica will De taken folicwing tha location of the gas l
.. esse point frc.m the Miscaliancous I;aste Evaporator.
s Very truly yours, h
fM Jf0-$4.'!
J. G. Larbein Station Superintendent-JCI:sn 4
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