ML19210E357

LER 79-041/04T-0:on 791119,Yankee Atomic Environ Lab Notified Util That Quarterly Composite Sample of Air Particles from Overlook Area Exceeded Calculated Lower Limit of Detection.Improved Analysis Instituted

ML19210E357
Person / Time
Site:	Pilgrim
Issue date:	11/27/1979
From:	Whitney G BOSTON EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19210E352	List: ML19210E351 ML19210E357
References
LER-79-041-04T, LER-79-41-4T, NUDOCS 7912040394
Download: ML19210E357 (1)

Text

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NRC FORM 366 - -

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LICENSEE EVENT REPORT (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATIONI CONTROL BLOCK: l i

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0 t lM AlPlPlSl1l@l0l0l- 0 0l0l0l0 -l0 025l@i264 l 1LICENSE l 1 TYPE 1l1JO@l57 CAT l 58

[g 7 8 9 LICENSEE CODE 14 15 LICENSE NUMBER CON'T O i 3{gc{lXl@l0l510l-10l2 9 l 368@l691 l 1EVENT l 1 191719 l@l 74 175 l 1 REPORT l 2 l 7DATEl7 980@

7 8 60 61 DOCKET NUMBER OATE EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h 0 2 ion November 19, 1979, Boston was notified by Yankee Atomic Environmental Lab. that a O 3 iquarterly composite sample of air particulates (6/26 to 9/24/79) t_ ken from the Over- l I

0 4 I look Area contained a level in excess of 10 times the calculated Lower Limit of O s l Detection (LLD) at the control station in East Weymouth. The sample at the Overlook i was 1012x10-5 pei/ Cubic Meter, whereas, the LLD value is 90 x 10-5 pei/M 3 . This 1 O 6 0 7 ] Concentration is not a significant source of exposure and would result in a maximum l 0 8 i dose of about 2 mrem of maximum exposure during the quarter. I DE CODE SUSC E COMPONENT CODE SU8 CODE SU E 7

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9 10 11 12 13 18 19 20 SEQUENTIAL OCCURRENCE REPORT REVISION LE R,RO EVENT YEAR REPORT NO. CODE TYPE NO.

@ REPORT l7 l9 l l_l 0l 4l Il l/l l0l4l lT l l-l 0l 21 22 23 24 26 27 28 29 30 31 32 KN Ah0N O PL NT MET HOURS SB 1 FO UB. SUPPLIE MANUFACTURER lzl@ y @ l z l@ lz l@ l0 l 0l 0 0l l Nl@

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33 34 35 36 31 40 43 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS i o l Improved analytical techniques have resulted in sensitivities for isotopes which are ]

i ;i; lbelow detection capabilities specified in Technical Specifications Table 4.8.4. I Comparisons at these low levels resulted in a ratio greater than 10 which necessitated i 3 this report.

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8 9 80 A  % POWER OTHER STATUS ISCO DISCOVERY DESCRIPTION i 5 l C l@ l ll 0l Ol@l N.A. l l@lNotificationbyEnvironmentalLab. l A TIVITY CO TENT AMOUNT OF ACTIVITY LOCATION OF RELEASE N.A. l I N.A. l 7

1 6JRELEASEO@OF 8 9 to 11 RELEASE l Zl@44 45 80 PERSONNEL EXPOSURES NUMBER 4 1 7 l0l0l0l@lTYPE l @lDESCRIPT' N.A. _, n3n l PERSONNEL INJU IES NUMBER D ESCRIPTION N.A.

7 i 3 8 9 l0l0l0l@l 11 12 80 LOSS OF OR DAMAGE To FACILITY C /

TYPE OESCRIPTION /

N.A. ' 912 ~*-

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i 9 8 9 lzl@l to 80 ISSUE DE CRIPTION 1

2 O 8 9 hl 10 N.A. l 68 69 llllll lllllli SO 5 NAME OF PREPARER PHONE: 617-746-7900 {