ML20244A594
| ML20244A594 | |
| Person / Time | |
|---|---|
| Site: | Crane, Humboldt Bay |
| Issue date: | 04/26/1979 |
| From: | Paulus R, Thompson D NRC OFFICE OF INSPECTION & ENFORCEMENT (IE) |
| To: | |
| Shared Package | |
| ML19199A457 | List: |
| References | |
| PNO-79-067AG, PNO-79-67AG, NUDOCS 7905020260 | |
| Download: ML20244A594 (2) | |
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IMMEDIATE PRELIMINARY NOTIFICATION
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April 26, 19/9 PREL1HINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE -- PHO-79-67AG This preliminary
. '.tication constitutes summary information of an event of safety or publi interest significance. The information presented is a surnary of information as of 7:00 a.m. on April 26,193 Facility: Three Mile Island Unit 2 Middletown, Pennsylvania (DN 50-320)
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Subject:
' NUCLEAR INCIDENT AT THREE MILE ISLAND Plant Status The average coolant temperature is being maintained at 225 degrees F by odmitting steam to the main condenser through the turbine bypass valves. The highest incore temperature reading is 311 degrees F.
Environmental Status No Aerial Measuring System (AMS) Surveys were made on Apiil 25, 1979.
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Iodine concentration at Unit 2 ventilation stack (analyzed by NRC Mobile Laboratory).
Date/ Time Activity (uCi/ce)
~8 4/25 (0004) - 4/25 (0512) 2.0 x 10 4/25 (0520) - 4/25 (0658) 1.5x10,j 4/25 (0701) - 4/25 (1200) 1.0 x 10,,
4/25 (1200) - 4/25 (1555) 2.0 x 10,3 4/25 (1557) - 4/25 (2010) 1.2 x 10,33 j
4/25 (2023) - 4/26 (0013) 1.2 x 10 j
Offsite Measurements Radiation Levels Offsite radiation levels identified by NRC survey teams continue to be l
consistent with natural background levels (0.02 mR/hr maximum). These resulta were obtained from routine daily curveys performed downwind on the east and vest sides of the Suc,quehanna River at distances up to five miles north and south dT the site.
Dose rates (47 locations) as measured by NRC thermoluminescent dosineters (TLDs) for the past 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> period continue to be consistentqvith natural I
back round levels.
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m-CONTIITOED fMMEDIATE PRELIMINARY NOTIFICATION
'N 7905020260 p p.
Contboued i
April 26 1979
'l Page 2 PNO-79-67AG NRC Environmental Samples (Samples taken offsite within 3 miles of site-analyzed in mobile laboratory)
Number of Sample Type Date of Sample, Samples Results air 4/25-26 5
Less than MDA*
uilk 4/23-25 6
I.ess than MDA daily air 4/24-25 1
Less than MDA
.. grass 4/23-25 5
Less than MDA EPA Environmental Samples (Analyzed at Remote Laboratory),
Number of Sample T3pe Date of Sample Samples Results air 4/24 29 Lens than HDA
~I3 air
'4/24 2
Range from 5.4 to 7.0 x 10 microcuries per cubic centi-meter (0.54 to 0.70 picoeuries per cubic meter)
All EPA samples were taken at distances greater than 2 mi.les,from the site.
- MDA - minimum. detect.able activity.
The Cocconwealth of Pennsylvania has been informed of these results.
Contact:
RCFaulus, IE x27246 DThompson, IE x27246 Distribution:
Transmitted H St,]' fig.._
Chairman Hendrie Commissioner Bradford S. J. Chilk, $20Y Cocmicsioner Kennedy Commissioner Ahearne C. C. Kammerer, CA Con::nissioner Gilinsky (For Distribution)
Transioitted: MNBB l', Rn P, Bldg J. G. Davis, IE L. V. Gossick, EDO H. R. Denton, NRR Region I H. L. Ornstein, EDO R. C. DeYoung, NRR Region II J. J. Fouchard, PA R. J. Mattson, NRR Region III N. H. Haller, MPA V. Stello, NRR Region IV R. C. Ryan, OSP R. S. Boyd, NRR Region V H. K. Shapar, ELD SS Lldg (MAIL)
W. J. Dircks, NMSS J. J. Cummings, OIA S. Levine, RES R. Hinogue, SD IE (TMI) Site (Provide copy to STATE)
White Hause Situation Room
. Provide copies to the Administrator and the Operatious Center)
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FDAA EPA c~
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DOE /EOC PEPA 3RP (State of PA)
DCPA HEW (Pickup)
Ucadcarry (FAA)
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IMMEDIATE PRELIMINARY NOTIFICATION
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