ML19323C016

LER 80-025/04T-0:on 800307,environ Samples Collected & Analyzed in Accordance W/Ets,Confirmed Measured Levels of Radioactivity in Excess of Ten Times Background Value.Caused by Use of More Sensitive Background Value

ML19323C016
Person / Time
Site:	Calvert Cliffs
Issue date:	05/07/1980
From:	Eherts R BALTIMORE GAS & ELECTRIC CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19323C014	List: ML19323C013 ML19323C016
References
LER-80-025-04T, LER-80-25-4T, NUDOCS 8005140528
Download: ML19323C016 (2)

Text

I LICENSEE EVENT REPORT 80 0514 0 fM O lo~T.e< .<ec<, i i i i i i ie ,,<E..E P. INT o. TvPE .<< .Ece, .E. INPo.. ,eN, 1 6 IO lil8 i 9M I oLICENSEE l C I rt I tt i i14l@l15o i n I I n i n i n I n in l _ in I 'n25l@l411 LICENSE NuM8EH 26 11 11 11 l@l57 CAT LICENSE TYPE JO I

$8 l@

7 CODE CON'T 101 1 EUR% l L l@l 0 DOCKET  ! 5101010131117 68 69 l@l01412181810 EVENT DATE 74 75 l@l0 REPORT I5DATElo 1780IR lo l@

? 8 60 61 NUMBER EVENT DESCRIPT,0N ANo PHOBABLE CONSEQUENCES h l

10121 l Environmental medium samoles collected on 3/7/80 and analvred in accordance with l 013 i I Section 3.2, Appendix B, Environmental Technical Specifications, cor, firmed measured I iO t4i llevels of radioactivity in excess of ten times the "backaround value". Based on i 10is I the observed levels, averaae individual doses to the GI Tract and Whole Body are I i

i O ,s I I very small fractions of the allowable doses to members of the ceneral oublic I

[017 l l (40 CFR Part 190) and are of no consequence to the health and safety of the public. l l 018 l l 7 8 9 E CODE SUSC E COMPONENT CODE SUSCOD'E S E 10191 7 8 9 I Z 12 l@ IX l@ l 21@ l 21 zl 2121 z l z 18 LZJ@ LIJ @

10 11 12 13 18 19 20 SEOUENTIAL OCCURRENCE REPORT REVISION EVENT YEAR REPORT NO. COOE TYPE N O.

LER

@ sgg.RO i 81 01 a 1-1 1012151 l/l 1014I LT_J L-J LoJ 32

_ 21 22 23 24 26 27 N N 30 31 K N C C PL NT ME HOURS S8 i POR 8. SU LIE MANUP C RER Iz 33 l@l34 zi@ l35 zl@ l3621@ l 01010101 37 40 I Yl@

41 l42ti l@ lzl@ lz191919l@

43 44 47 i CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h 11 101 IThe introduction of a more sensitive technioup has reduced the Mnt value fnr I m l specific radionuclides in environmental medium samnlos. Althnunh radicar tivo I

' t i l 21 Ireleases for the reporting period have been well within flRC reouirements. the I ii631 l March samples were in excess of the more sensitive backaround value. It is (CONTD) l 3 g l anticipated that actual releases of radionuclides will fluctuate as a functinn 80 1

7 8 9 SA $  % POWER CTHER STATUS DISCO Y OtSCOVERY DESCRIPTION Ii I 5 I [Ej@ l 01 7 l 5 l@l NA l Lgj@l Routine Off-Site Samole l A TIVITY CO TENT RELEASE AMOUNT OP ACTIVITY LOCATION CP RELEASE l l I Ii le'l *LZJ @D

' ' OP RELEASELIJ@l NA NA PERSON ~EL ExPOSSES NUM8ER TYPE DESCRIPTION na l l i l 71 I n i n I n l@l7_J@l

' ' ' ,ERSON~E't' iN;u%ES '

NUMBER DESCRIPTION l

li ta 8l 9l01010 l@l 7 li 12 NA 80 fv$,$E USCR ,T O~^"^'''"@

I li7 191 8 9 12 l@l10 f1A 80 ISSU DE CRIPTION 12 l O I Lt.i]E @l NA l lIIliIIIIIIIli 7 8 9 10 68 69 80 5 NAME oF PREPARER R. F. Eherts psons: ( 301 Wo_47an 2,

l LER NO. 80-25/4T DOCKET NOS. 50-317 50-318 EVENT DATE 04/28/80 REPORT DATE 05/07/80 ATTACHMENT CAUSE DESCRIPTION AND CORRECTIVE ACTIONS: (CONTINUED) ,

of plant operational history.

l EVENT DESCRIPTION AND PROBABLE CONSE0VENCES:

The Oyster samples were collected on March 7,1980 from the Camp Conoy sampling location and analyzed for gamma-emitting radionuclides as required. The results of the analyses showed the presence of Ag-110m at 129+5 pCi/Kg(wet). The oyster samples collected on the same date from the Kenwood Beach sampling location (the background location) showed Ag-110M at < 3 pCI/Kg(wet).

The sampi es of bottom sediments collected on March 7,1980 from the Camp Conoy 1 location were Ge(L1) counted for complete gamma isotopic analyses. The results  ;

of these analyses showed the presence of Co-58 at 208+26 pCi/Kg(dry) and Co-60 at 209+24 pCi/Kg(dry). Similar samples for the same iieriod collected from (i)

Long Beach showed Co-58 at < 20 pCi/Kg(dry), (ii) Intake area showed Co-60 at <20 pCi/Kg(dry).

Based on the observed levels of Ag-110m during this sampling period, for an average adult consuming one kilogram of oysters per year the doses to the GI Tract and Whole Body are estimated at less than 8x10-3 mrem / year and less than 1.2x10 s mrem / year, respectively. These are very small fractions of the allowable 25 mrem / year (GI Tract) and 25 mrem / year (Whole Body) doses to members of the general public, (40 CFR, Part 190 Environmental Radiation Protection Standards for Nuclear Power Operations) and are therefore considered to be of no consequence to the health and safety of the public.