ML20085E578

LER ER-76-008:on 760408,4 Psig Released from T-101A Instead of T-101B Waste Gas Decay Tank.Caused by Operator Error. Total Kr-85 Activity Released Is 0.02% of Allowable Limit. Event & Possible Consequences Reviewed

ML20085E578
Person / Time
Site:	Palisades
Issue date:	04/22/1976
From:	Bixel D CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20085E581	List: ML20085E578 ML20085E582 ML20085E588
References
LER-ER-76-008, LER-ER-76-8, NUDOCS 8308150383
Download: ML20085E578 (2)

Text

.

O Q UC*lSEE EVENT REPORT Palisader .

CONTROL BLOCK:l l l l l l l (ptEASE PRefT ALL REGUWlED WGPtNIRAATION) 1 8 UCENSE NUMSER T PE RE1 l MlIl Pl A l Ll1l l 0l 0l-l 0 l 0l 0l 0 l 0l-l 0l 0l l hl 1l1l 1l1l l0l1l 7 89 14 15 25 28 30 31 32 eOUE DOCKET NUMBER EVENT DATE REPONT DATE 01 COwr l l l LT_] LL_I l 0 l s i ol-10 l2 l s l s i 10lul0l8l7l6174 10 l u l 21217 l 6 l 7 8 57 58 59 80 81 88 89 75 80 EVENT DESCRPTION 95 I On April 8, 1976 an operator was given a batch card to release vaste gas decay l l 7 89 80 SE l tank T-101B. He lined un and released h usig (60 ef) from T-101A before discover-l 7 89 80 SE l ing his error and stonning his release. T-101A vas originally filled and isolated l 7 89 80

@l on December 21, 1975 l ggf (ER-76-08) 7 89 n ae 80 CE E COMPONENT CODE vtXATON Q lMlBI W 7 89 10 11 lV l AIL l VlE l Xl 12 17

[Z_J 43 lZl9l9l9l 44 47

[Y_j 48 CAUSE DESCRPTION DE l The_ tank was isolated for almost four months prior to this inadvertent release. l 7 89 80 0 l The rer.aininx activity in the tank was 2.22 x 10" uCi/cc of Kr-8s. The total l 7 89 80 1 l activity released was 0.02% of allovable. The event was caused by an operator l s  % POWER OTHER STATUS OtSCO Ot3COVERY CESCmPTON 7 8 9 W 10 l0l0l0l l 12 13 NA l 44 W45 l

48 NA 80 l

RELEA ED OF R E AMOUNT OF ACTIVITY LOCATON OF RELEASE E

7 8 9 l_G_] Wl 10 3.7 x 10- Curies l l Vent to Atmosphere l 11 44 45 80 PERSONNEL EXPOSURES NUMBER TYPE CESCRIPTON DE 1010101 Lz_I I NA l l

7 89 11 12 13 80 PERSONNEL INJURIES NUMBER DESCRIPTON M l0l0l0l l NA l l 7 89 11 12 80 PROBABLE CONSEQUENCES gg l None - This release was below acceptable release levels. l 7 89 80 LOSS OR DAMAGE TO FACruTY TYPE DESCRPTON D2 d 7 89 10 l NA l

80 PUBLICITY 8308150383 760422 PDR ADOCK 05000255 DE l None S PDR l

7 89 eg ADDITIONAL FACTORS Q@ l (Contd From Cause Description) error. This event and possible consequences were ll 7 89 80 DE l reviewed with the operator and subsequently reviewed with all plant operators.

7 89 80 ll

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Consumers (m ( Power x.x,,, <

• company c.e.r.i on.c.. 2,2 w.. u.cn.g.n Avenu . sac a.oe. u.c a.g.n 4 9201. Area Cod. Sl? 7 BS OS50 April 22, 1976 f',. c :

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\ , ,

L Mr James G. Keppler G_ e ps ',

Office of Inspection Enforcement  ;

Region III j*dyA V

US Nuclear Regulatory Ccmmission 9 04 799 Roosevelt Road '9 Glen Ellyn, IL 60137  %

m O DOCKET 50-255, LICENSE DPR PALISADES PLANT, ER-76-08 GASE0US RELEASE Attached is a reportable occurrence which relates to the Palisades Plant. This occurrence was caused by an operational error but did not result in a release above permissible levels. If the tank had been filled with highly radioactive gas, the discharge radiation monitor would have automatically terminated the release.

Even though this occurrence was the result of an operator error, it should be noted that this error was observed and the release terminated without the benefit of alarm or trip signals and that this action limited the relcase to a small portion of the tank volu=e.

7- David A. Bixel (Signed)

David A. Bixel Assistant Nuclear Licensing Administrator i 4147 t