ML19351E473
| ML19351E473 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 11/28/1980 |
| From: | Jay Collins, Fasano A, Thonus L Office of Nuclear Reactor Regulation |
| To: | |
| References | |
| PNO-TMI-80-052, PNO-TMI-80-52, NUDOCS 8012100179 | |
| Download: ML19351E473 (2) | |
Text
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T E L"J.ra ;,;TIFICATION November 28, 1980
' PRELIMINARY NOTIFICATION OF EVENT OR UtiUSUAL OCCURRENCE--PNO-TMI-80-52, This preliminarv notification constitutues EARLY notice of events of POSSIBLE safety dr public interest sicnificance.
The information presented is as initially. received Jithout verification or evaluation and is basically all that is known by NRC staff pn this date.
/ Facility: Metropolitan Edison Company
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21 i
Three Mile Island, Unit 2 4
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Middletown, Pennsylvania G
M Occket Number 50-320 a
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Subject:
CONTAM' NATION OF EXPANSION JOINTS Ouring a licensee survey of the 281 f t. elevation of the Unit 2 auxiliary building on November 27,.1980, unexpected levels of contamination were found in an expansion joint (seam). The seam runs between the service building on one side and the auxiliary building and the air _ intake tunnel on the other side.
Contamination was also found in another expansion joint which is contiguous to the first and lies between the service y
building and reactor building annulus.
The expansion joints are approximately one inch thick and are composed primarily of cork.
Direct radiation measurements, smears, _ samples of cork (approximately 10-20 grams each),
and a sample of water which permeated the cork were taken by the licensee.
The highest level of activity is apparently located on the seam between the service building and auxiliary building.
The maximum direct radiation levels in this area of the seam were 0.48 R/hr gamma and 2.08 Rad /hr beta; maximum activity on a cork sample was approximately 115 uCi/ sample (cesium); maximum activity on a water sample was approximately 1.7 uCi/ml (cesium).
The contaminated areas lie within the licensee's radiologically controlled area.
They have been roped off and posted.
The aress with greater than 0.1 Rad /hr beta radiation have been shielded to reduce the beta to zero.
Two radiation specialists (inspectors) from the NRC TMI Program Office responded to the site on the evening of November 27, 1980.
The inspectors toured the areas containing the contaminated seams, reviewed licensee data and made independent measurements. The source and extent of the contamination are being investigated by the licensee and.NRC.
Media interest has been expected because of public sensitivity to TMI. related events.
The Comonwealth of Pennsylvania has been informed.
Neither the NRC nor the licensee have made plans to issue a press release.
This preliminary notificiation is issued for information only.
The NRC TMI Program Office received notification of this occurrence by telephone from the supervisor of Plant Operations at 6:30 p.m., November 27, 1980, and this information was current as of 12:30 p.m., November 28, 1980.
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A A. N. Fasa &
Contact:
L. H. Thonus 590-1145 no 590-1123 J. T. Collins _
590_-1120 8012300/7f pg
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PNO-TMI-80 52 2
November 28, 1980 DISTRIBUTION:
(Facsmile Transmission Times Noted)
H ST BLDG o7.*/[
MARYLAND NATIONAL IE:X005 o7l//
Chairman Ahearne BANK BUILDING J7.' R[
(IE:HQ Dist)
Commissioner Gilinsky W.-J. Dircks, EDO Commissioner Bradford C. Michelson, AE00 Region I 7? dI,2#
Commissioner Hendrie J. J. Fouchard, PA Region II 3 :gLS ACRS N. M. Haller, MPA Region 111 3'.04F-S. J. Chilk, SECY G. W. Kerr, OSP Region IV J, o tD C. C. Kammerer, CA H. K. Shapar, ELD Region V ~ ~ 3 :/23 PHILLIPS BLDG $ 20 WILLSTE BLDG e,7.' N (MAIL)
H. R. Denton, NRR_
J. G. Davis, NMSS R. H. Vollmer, NRR
.T. Murley, RES IE:X005 __ ___
F. Schroeder, NRR
- u. ment Mat. Br:33 D. F. Ross, NRR LANDOW BLDG (Fax by HQ)
. Ebbin, NSOC D. Eisenhut, NRR (6 MIN /PAGE]
S. H. Hanauer, NRR J. J. Cummings, OIA B. J. Snyder, NRR PRELIMINARY NOTIFICATION e
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