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{{Adams
#REDIRECT [[05000220/LER-1980-028-04, /04T-0:on 801215,results of 801103,26 & 1201 Milk Sample Tests Showed Detectable I-131 at Three Locations. Caused by Chinese Nuclear Weapons Test During Oct.Plant Not Accountable for Detected Levels]]
| number = ML18037A313
| issue date = 12/29/1980
| title = LER 80-028/04T-0:on 801215,results of 801103,26 & 1201 Milk Sample Tests Showed Detectable I-131 at Three Locations. Caused by Chinese Nuclear Weapons Test During Oct.Plant Not Accountable for Detected Levels
| author name = Harrison P
| author affiliation = NIAGARA MOHAWK POWER CORP.
| addressee name =
| addressee affiliation = NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
| docket = 05000220
| license number =
| contact person =
| document report number = LER-80-028-04T, LER-80-28-4T, NUDOCS 8101070504
| package number = ML17053C213
| document type = LICENSEE EVENT REPORT (SEE ALSO AO,RO), TEXT-SAFETY REPORT
| page count = 10
}}
 
=Text=
{{#Wiki_filter:NRC,FORM 366                                                                                                                            U. S. NUCLEAR.REGULATORYP COMMISSION
    -77)>>,.
LICENSEE EVENT REPORT (PLEASE PRINT OR TYPE ALL REQUIRED INFORIVIATION)
CONTROL BLOCK:
                                                                                ,O
  ~O 7      8            LICENSEE CODE              14 QE 15                    LICENSE NUMBER 0
25 Qg.
26      LICENSE TYPE        30 Q4~  57 CAT 58 Qg CON'T
  ~o 7        8
                                ~LQs 60            61 0      5 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES 0    0    0 DOCKET NUMBER 2,
                                                                                    '82    0
                                                                                          'IO Q7 69 1      2      1 EVENT DATE 5    8      0 74 OB.
75        REPORT DATE Monthl milk                sam      1
  ~03                three      sam      le locations. Further                        sam    les taken                o        2 I-131 results at the nearest downwind                                                        0
  ~os                no  significant environment effect.                                    It is          ex ected          future        sam      le results
  ~OB                will have          no.detectable                  I-131.      See    attachment                  for further details..
  ~O7
  ~OB                                                                                                                                                                                      80 7        8 9 SYSTEM, CAUSE                          CAUSE SUBCODE                    CohIPONENT CODE COMP.
SUBCODE VALVE SUBCODE CODE                  CODE
  ~gg                            ~XX              QII      ~X    Q12    ~Z    Qls        Z        Z      Z      2    Z    Z QI4 18
                                                                                                                                              ~Z Gs 19
                                                                                                                                                                ~Z 20 PIg 7        8                    9            10            11            12            13 SEOUENTIAL                                OCCURRENCE            REPORT                        REVISION Q17 LER/RO REPRR7 EVENT YEAR
                                    ~80                        ~,            ~02 REPORT No.
8              ~~                ~04 CODE                TYPE
                                                                                                                                                  ~T 30 31 NO.
                                                                                                                                                                                  ~0 32 21          22            23            24            26            27                28        29 ATTACHMENT            NPR~          PRIME COMP.        'OMPONENT ACTION . FUTURE TAKEN ACTION LJOIRLJQ>>
33        34 EFFECT ON PLANT LJOER 35 SHUTDOWN METHOD LJOE 36              37
                                                                                        '  HOURS 022
                                                                                                      '        40 SUBhIITTED LJQ>>
41 FORM SUB.
LJO24 42 SUPPLIER LJQ>>
43                44 MANUFACTURER 47 CEI CAUSE DESCRIPTION AND CORRECTIVE ACTIONS 27 o            The    detection of 1-131 is attributed. to deposition from                                                          a  nuclear. Nea'ns test conducted by the                          Peoples Republic                  of China in October.                        The    continued detection in a single                          downwind        location is atributed to this farmers 3
extended grazing period. Samples have been                                                  instituted            weekly        until, no.
4 further detection is present. 'Evaluation of plant release data indicates p an accoun a z 3 ty or t e etecte
                                                                        '8QRI eve s .                                                                    80 7
s 8
            ~
9 FACILITY STATUS
                ~8p-        ~>> 5 POWER Qog N/A OTHER STATUS      ~
                                                                                      ~3P      METHOD OF DISCOVERY Test Results DISCOVERY DESCRIPTION 7      8    9            10                12        13                            44        45            46                                                                    80 ACTIVITY      CONTENT RELEASED OF RELEASE                          AMOUNTOF ACTIVITY 3                  ~ ~~                                        LOCATION OF RELEASE s      ~Z    P>>    ~ZP4                        N/A                                                          N/A 7      8    9            10            11                                            44                45                                                                            80 PERSONNEL EXPOSURES NUMBER            TYPE          DESCRIPTION 039 O    O    027      Z Os                    N/A 7      8    9            11      12            13                                                                                                                                  80 PERSONNEL INJURIES .
NUMBER          'ESCRIPTIONO41 R      ~OO        O    Q4o                N/A 80 7  ~    8    9            11      12 LOSS OF OR DAMAGE TO FACILITY                43 TYPE      DESCRIPTION g        Z. Q42              N/A 8    9        10                                                                                                                                                              80 PUBLICITY IEERER
                ~NQ44 OEECRIPEIONM N/A 8101 070                +6 t                                                                                  NRC USE ONLY ER 7      8    9        10 NAME OF PREPARER P. Harrison                                                          PHDNEI
                                                                                                                                                      's  68    69 343-2110 Ext. 12 80 o 2L
 
~, 0 ~
ATTACEKNT A I. 
 
==SUMMARY==
 
Milk samples for I-131 are required to be taken monthly by NMP-1 ETS.
Samples collected on ll/3/80 demonstrated. positive I-131 detection at two off-site locations and the control location (the control location result was greater than four times the other location resu1ts).        This fact was reported to Region I (Dr. R. Bores)    and  was  determined  to be  due to'the Chinese Nuclear Weapons Test in October 1980. Samples        collected  for I-131 on ll/26/80 and 12/1/80 demonstrated positive I-131 results at the location only. Region I (Cheryl Sakenas) was informed of these  nearest'ownwind
,results as well (12/ll/80). As a result of a preliminary investigation it w'as determined that the results could be'xplained by a difference in farming practices (personal communication with the farms in question).
During the beginning of November 1980, all sampling farms had cows          off pasture except the farm in question with the positive I-131 result.                        Sample results are included in Attachment C.
II. General Description Deposition from a nuclear weapons test conducted by the Peoples Republic of China in October 1980 was scheduled to fall on New York State on October 21-26, 1980. Milk samples collected from the six (6) milk sampling locations on October 27 were negative as far as I-131 detection. is concerned.                        Samples collected on November 3 revealed positive    I-131  detection  at  off-site                and the control locations (this location    had  the  highest  amount  of I-131; greater than 4 times the off-site locations). See Attachment C. This data was interpreted to mean that the effect of the weapons test fallout.was missed on October 27 sampling date but detected on the November 3 sampling date since off-site as well as .control locations had detectable I-131.
USNRC Region I was notified of this (11/26/80 - Dr. R. Bores and S. Hudson, USNRC  Site Inspector).
Milk samples for I-131 were scheduled to be collected again on November 26.
Results from these samples revealed positive I-131 at the closest off-site location only (see Attachment C). This one (1) positive result was 17.87 times the control result. Scheduled samples on December 1 also revealed positive 1-131 at the closest off-site location. This one (1) positive result was 31.2 times the control result. This information was phoned to Region' on December                          ll
,(Cheryl Sakenas).
For purposes of investigation, weekly sampling was initiated.
next scheduled sample was December 12. The data for I-131 for this date was negative, that is, all sampling locations did not have any detectable I-131 (all values were LLDs). Actual data is not available to include on Attachment C since the information was acquired via telephone.
 
~4 Ws Attachment A (cont'd)
III. General Description  of the  Cause The cause  of detectable I-131 in milk on  November 26, and December 1 at the closest    off-site location  and not at the other off-site or control locations is  due  to two (2) factors.
First the I-131 detected is due to the Chinese Weapons Test of October 1980. November 3, I-131 results revealed detection at locations southeast and west of the site. Wind data between October 26 and November 3 was re-viewed and resulted in southerly and northwesterly directions. Analysis of air iodine samples and air gross beta samples around the site for both off-site and on-site locations revealed no detection of I-131 and no significant increases    in gross beta counts.
A more detailed analysis. of air particulate composites (on-site and off-site) revealed positive I-131 detection as well as significant amounts of  Ce-144, Hu-'103, Ba-140, Zr-95, Ce-141, Ta-140, Nd-147 (&>=10 days) and, Nb-95 (+=3.5days).      These results were not observed initially since in-dividual stations are counted separately utilizing short count times. Ap-parently, by combining the individual samples, i.e. compositing, into on-site and off-site samples and utilizing long count times, the sensitivity of the instrumentation was increased significantly. The presence of these nuclides are associated with nuclear weapons testing) is not usually detected in  'they air particulate composites at the site. When considering the half      life of Nd-147 and i'-95, the detection of fallout from the October Chinese Test is positive.. Further, review of NMPNPS and JAFNPP 'stack and vent release or effluent rate data did not reveal any increases that could account for the detected levels of I-131 in milk samples (these results were arrived at through dose equations using Reg. Guide 1.109. Finally, I-131 was detected at Salem Nuclear Power Plant, Peach Bottom Nuclear Power Plant, and Susquehanna Nuclear Power Plant. Although -I-131 was not detected at Indian Point or Ginna Nuclear Power Plants in New York State, this fact is xplained below.
Secondly, I-131 detection at the closest off-.site location and not the other  off-site or control locations is due to. a difference in farming or in this specific, case, grazing practices. Through personal communications with the owners of the milk sampling locations (information acquired through our biological contractor),    it was determined that at all locations cows were off pasture approximately    November  1, except at the closest off-site location
(¹25). According to the owner at location ¹25. his cow (he only has one) was left to feed on pasture as long as possible for economic reasons uncoil shortly after December l. At the other locations, cows were fed grain, hay, etc., indoors and. allowed to exercise 3-4 hours per.day. At these locations it  was determined that there was only insignificant amounts of pasture grass left, therefore pasture feeding was very limited during exercise periods.
Finally, I-131 detection at location ¹25 (closest off-site farm) was negative after December 1, since the one cow was not exposed to any I-131 deposition due to the Chinese Test fallout. Considering the biological half-life, the presence of I-131 should be negative after 25 :.ays, as was 'demonstrated by the data.
 
ATTACHMENT A  cont'd)
Therefore,  it can facts that I-131 from be determined through observation and review of the weapons te'sting fallout was being detected on November 3.
This detection is thought to be in the    initial phases of the biological buildup.
The levels increase on November 26 and December 1 but was detected. at location 825 only since this was the only location that had cows (actual only one cow) on pasture. At the other locations, cows were not exposed to any I-131 de-
.position due to indoor feeding 'and thus milk results were  nil.
 
ATTACHMENT B Corrective Action Weekly sampling  at  all milk locations'as initiated  as per NMP-1 ETS requirements. Sampling  will continue until I-131 results are negative in milk  samples or less than 2.4 pCi/liter.
An investigation was initiated covering all possible paths of contamination .
including plant operations. This investigation has reviewed the pertinent data and determined the cause of I-131 in milk to be due to nuclear weapons testing. Data from this investigation will remain on file at the plant.
As required by NMP-1 ETS, the USNRC Region 1 was notified by telephone as well as by this document and will be advised of any significant developments.}}

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