View source for PNO-I-89-044, on 890612,two Workers Received Exposures of 570 & 280 Millirem W/Total Quarterly Doses of 1,240 & 960 Millirem,Respectively,While Working Around Refueling Pool. Caused by Hot Particle.Licensee Trying to Capture Source

{{Adams
| number = ML20245A112
| issue date = 06/13/1989
| title = PNO-I-89-044:on 890612,two Workers Received Exposures of 570 & 280 Millirem W/Total Quarterly Doses of 1,240 & 960 Millirem,Respectively,While Working Around Refueling Pool. Caused by Hot Particle.Licensee Trying to Capture Source
| author name = Johnson J, Nimitz R
| author affiliation = NRC OFFICE OF INSPECTION &amp; ENFORCEMENT (IE REGION I)
| addressee name = 
| addressee affiliation = 
| docket = 05000333
| license number = 
| contact person = 
| document report number = PNO-I-89-044, PNO-I-89-44, NUDOCS 8906210093
| document type = PRELIMINARY NOTIFICATION OF EVENT OR OCCURRENCE (PNO,, TEXT-INSPECTION &amp; AUDIT &amp; I&amp;E CIRCULARS
| page count = 2
}}
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DCS No: 50333890612 Date: June 13, 1989
. P_RELIMINIRY
_        -    NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE--PNO-I-89-44 This preliminary notification constitutes EARLY notice of events of POSSIBLE safety or public interest significance. The information is as initially received without verification or evaluation, and is basically all that is known by the Region I staff on this date.
Facility:                                  Licensee Emergency Classification:
James A. Fitzpatrick                             Notification of Unusual Event New York Power Authority                         Alert Oswego, New York                                 Site Area Emergency Docket No. 50-333                                General Emergency                                     --
X   Not Applicable

==Subject:==
UNPLANNED RADIATION EXPOSURE OF TWO WORKERS Two contractor workers received unplanned exposures while working around the refueling pool on the second shift on June 12, 1989. The unplanned exposures for the workers, based on official record dosimetry, were 570 and 280 millirem, with a total quarterly                     J dose of 1240 and 960 millirem, respectively. A routine radiation survey had been conducted in the work area at about 1730 hours and the survey showed normal, expected radiation fields (1-2 mrem /hr). Soon after that, a tool was to be brought up from within the pool, and a health physics technician was asked to monitor the operation.
The technician found an exposure rate of about 300 mR/hr close to the surface of the pool. The tool was reinserted but the high reading remained. Further surveys                        --
identified a very localized radiation source at the edge of the pool near the surface that showed up to 600 R/hr as it was approached. Two area radiation monitors located in the general area around the pool but not near the surface did not show unusual readings and therefore did not alarm. The radiation monitor on the refueling bridge was malfunctioning at the time.
The licensee immediately suspended work and secured access to the refueling floor, and an investigation into the cause and corrective actions was initiated. The workers' dosimeters were read to assess the dose received. The licensee is currently trying to decide on a method to capture the radiation source, believed to be a " hot particle",
and to determine what additional corrective actions are appropriate. A Region I based radiation specialist has been sent to the site to evaluate licensee actions.
Region I was made aware of this event by the resident inspector following his notification by the plant manager.
This information is current as of 8:30 a.m., June 13, 1989. The licensee does not plan issuing a press release. The State of New York has been informed.
CONTACT:     R. Nimitz           J. Johnson 337-5267             337-5234 89062.10093 090613 PDR                        '                                                               0 I&E PNO-I-89-oqq       PNU                                                                   -
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l      OWFN              MNBB           H-St. NL        Mail: ADM:DMB Chairman Zech     AE00           ACRS  RES               DOT:Trans only
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CA        NRR OGC       OIA     Regional Offices GPA       01                           RI Resident Office PA        SLITP EDO       DE                           Licensee:
(Reactor Licensees)
Region I Form 83 (Rev. April 1988) j 1
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