ML19320A417

Nonroutine Radiological Environ Rept 50-313/77-01:on 771005 & 06,I-131 Activity Levels in Milk Samples Exceeded Tech Spec Limit.Caused by Radioactive Fallout from Chinese Nuclear Weapon Test.No Corrective Action Required

ML19320A417
Person / Time
Site:	Arkansas Nuclear
Issue date:	10/14/1977
From:	ARKANSAS POWER & LIGHT CO.
To:
Shared Package
ML19320A407	List: ML19320A406 ML19320A417
References
50-313-77-01, 50-313-77-1, NUDOCS 8005020442
Download: ML19320A417 (2)

Text

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?% KANSAS NUCLEAR ONE-UNIT 1 t

, NON-ROUTINE RADIOLOGICAL ENVIRONMENTAL REPORT NO. 50-313/77-1

. DESCRIPTION

-On October 5 and 6,'1977, I-131 activity levels in milk samples collected on'10/3/77 -and 10.4/77 were significantly higher than normal and above

.linits specified by Environmental S,secification 5.6.2.b(1). These activities produce extrapolated annual dose rates greater than four (4) times the design objective and are therefore reportable by Environmental Technical Specification 5.6.2.b(1).

Activity levels of all the sampling points ranged from a low of 40 pCi/1 .<

at the sampling point closest to the plant to a high of 62 pCi/1 at the L control sampling point.

t CAUSES .

It is our conclusion that these escalated activities are not related to the' operation of Arkansas Nuclear One-Unit 1 or any associated activities but rather due to radioactive fallout from the Chinese nuclear weapon test of 9/17/77.

The Arkansas State llealth Department _ concurred that in their daily state wide milk samples they had activity levels of 40 to 60 pCi/1 for the dates 10/3/77 and 10/4/77. They further stated that their sample activities had

. peaked at 100 to 150 pCi/1 on 10/8/77 and 10/9/77. The department con-curred with Arkansas Power 6 Light that these abnormal values were due to-the Chinese nucicar weapon test of 9/17/77.

PROGRAM TO REDUCE I-131 LEVELS 1

.Since the escalated I-131 levels in milk samples were not related to operation of Arkansas Nuclear One-Unit 1 but to radioactive fallout, no action is required by Arkansas Power 6 Light Company to reduce the levels.

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DISTRIBUTION FOR ANNUAL / SEMI-ANNUAL ENVIRO REPORTS / ENVIRO MONITORING RPTS (OL STAGE)

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. U.s. NUCLEAR REGULATo3Y coMulSSloN OCCKET NUM E3 n.n3Cru195 So .3I3

, . NRC DISTRIBUTION FOR PART 50 DOCKET MATERIAL "\'E VIRO ENTAL

'TO: FROM: cATE oP OCCUMENT Arkansas Power & Light Co. 10/14/77 Mr. E. Morris Howard Little Rock, Arkansas n,7, ,, c,,y , ,

Donald A. Rueter 11/3/77

! XLETTE R O NOTORIZED PROP INPUT PORM NUMBER of COPIES RECEIVED XoR GIN Al., UNCt.AS$1Pf EO acon lg;, gen j cascR Prion

• ENCLoSU RE j Non-Routine, Radiological, Environ. Rept.

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No. 50-313/77-1 concerning milk samples taken 10/3/77 and 10/4/77 which contained I-131 levels exceeding Environ. Tech Spec rept.

levels.....

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PLANT NAME: Arkansas Unit No. 1 RJh 11/3/77 (1-P) l I (c1-Pv ) 6,ua . Rec.'1 Y I FOR ACTION /INFORMATION I i l BRANCH CHIEF: .D A U { S

! I PROJECT MANAGER: f5 rd A t d e E I I LIC. ASST: (5) ** D io ct S

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EXTE8sNAL DISTRIBUTION CONTROL NUMBER LPDR: KQ SSeit Ui tid A r 1( [pj 7 l TIC I '

NSIC ACRS w/1 CY SENT AS CATEGORY B l 773070119

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