ML19199A618
| ML19199A618 | |
| Person / Time | |
|---|---|
| Site: | Crane, South Texas  |
| Issue date: | 04/24/1979 |
| From: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE) |
| To: | |
| Shared Package | |
| ML19199A617 | List: |
| References | |
| PNO-79-067AE-01, PNO-79-67AE-1, NUDOCS 7905040406 | |
| Download: ML19199A618 (3) | |
Text
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IMMEDIATE PRELIMINARY NOTIFICATION April 24, 1979 PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE - PNO-79-67AE This preliminary notification constitutes sunmary infomation of an event or safety or public interest sianificance. _ T'ne inf_ormation presented is a summary of information as of 7:00 a.m. on Acril 24, 1979.
Facility: Three Mile Island Unit 2 Middletown, Pennsylvania (DN 50-320)
Subject:
NUCLEAR INCIDENT AT THREE MILE ISLAND Plant Status The average primary coolant temperature is stiU being maintained at 175 degrees F by admitting steam directly to the main condenser through tha min ti.i rhi n a Tha hichact incore themeceuple reading ic 271 degree: F.
The charcoal filters in Train A of the Fuel Handling Buildirig Ventilation System have been replaced.
This train was placed in service at 6:30 a.m.
April 24, 1979.
Twenty-eight of 90 charcodl filters in Train B of the Auxiliary Building Ventilation System have been replaced.
Environnental Status One Aerial Measuring System (AMS) Survey was made between 10:15 p.m. and 11:15 p.m. on April 23, 1979.
No radioactivity above natural background was detected.
Iodine concentration at Unit 2 ventilation stack (Analyzed by NRC Mobile Laboratory).
Date/ Time Activity (uCi/cc) 4/23 (0007 - 4/23 (0405)+
6.7 x 10-8 4/23 (0407 - 4/23 (0758) 5.9 x 10-8 4/23 (0801
- 4/23 (1201) 3.6 x 10-8++
4/23 (1223) - 4/23 (1614) 1.4 x 10-7++
4/23 (1617) - 4/23 (2010) 6.3 x 10-8 4/23 (2014) - 4/23 (2156) 5.7 x 10-8 4/23 (2159) - 4/24 (0001) 5.9 x 10-8 4/24 (0004) - 4/24 (0404) 4.9 x 10-8
+ This entry was incorrectly reported in PNO-79-67AD.
++ These are licensee contractor values.
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CONTINUED IMMEDI ATE PRELIMINARY tiOTIFICATION 790504 O/G
Continued April 24, 1979 Page 2 PNO-79-67AE
_0ffiste Measurements Radiation Levels
~
Offsite radiation levels indentified by NRC survey teams continue to be consistent with normal background levels (0.02 mR/hr maximum).
These results were obtained from routine surveys perforced downwind on the east side of the Susquehanna River at distances up to five miles north and south of the site.
Dose rates (47 locations) as neasured by NRC thermoluminescent dosimeters (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 censistent with normal background levels.
NRC Environmental Samples (Samples taken offsite within 3 miles of site analyzed in mobile lacoratory)
Nunber of Sample Type D_ ate of Sample
,Samoles Results air 4/23-24 10 Less than MDA milk 4/21 4
Less than HDA daily air 4/22-23 1
Less than MDA EPA Environmental Samples (Analyzed at Remote Laboratory)
Number of Sample Type Date of Sample Samples Resul ts air 4/19 26 Less than f tDA air 4/19 5
Range from 2.1 to 6.9 x 10-13 microcuries per cubic centimeter (0.21 to 0.69 picacuries per cubic meter) air 4/20 5
Range frein 9 to 168 picocuries per cubic neter of Xe-133.
14 to 22 picocuries per cubic meter Kr-85.**
These are approximately background levels.
milk 4/18 6
Less than MDA milk 4/19 9
Less than MDA All EPA samples were taken at distances greater than 2 miles from the site.
- MDA = minimum detectable activity.
" Maximum Permissible Concentration for Xe-133 and Kr-SS is 300,000 picocuries per cubic meter.
The Commonwealth of Pennsylvania has teen informed of these results.
C04TINUED IMMEDIATE PRELIMINARY NOTIFICATION 4
\\i a
C:ntinued April 24, 1979 Pace 3 PNO-79-67AE
Contact:
RPaulus, IE x27246; DThompson, IE x28487 Distribution:
Transmitted H St l'.44I Cnairman hendrie Commissioner Bradford S. J. Chilk, SECY Commissioner Kennedy Commissioner Ahearne C. C. Kammerer CA Commissioner Gilinsky (ForDistribution)
Transmitted:
MNBB i : 4?(^
P. Bldg 21c25)
J. G. Davis IE L. V. Gossick, EDO H. R. Denton, NRR Region I ?(!2 di H. L. Ornstein, EDO R. C. DeYoung, NRR Region II ? ' ( 4/
J. J. Fouchard, PA R. J. Mattson, NRR Region III ;7/2 /
N. M. Haller, MPA V. Stello, NRR Region IV V;/r3 R. G. Ryan, OSP R. S. Boyd, NRR Region V SR!5'ry
- 11. K. Shapar, ELD SS Bldg 2 :cc/
(MAIL)
W. J. Dircks, hMSS J. J. Cummings, OIA
$. Levine, RES R. M1Dogue, 5U IE (TMI) Site (Provide copy to STATE)
White House Situation Room FDAA (Provide copies to the Administrator and the Operations Center)
^
DCPA HEW (Pickup)
Ecndcarry (FAA)
IMMEDIATE PRELIMINARY NOTIFICATION i'
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