ML19343D628
| ML19343D628 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 04/30/1981 |
| From: | Barrett L, Conte R, Fasano A, Thonus L Office of Nuclear Reactor Regulation |
| To: | |
| References | |
| PNO-TMI-81-010, PNO-TMI-81-10, NUDOCS 8105050602 | |
| Download: ML19343D628 (2) | |
Text
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PRELIMINARY HOTIFICATION 50320810429 April 30, 1981 PRELIMINARY NOTIFICATION OF EVENT OR UNUSOAL OCCURRENCE--PNO-TMI-81-10 This preliminary notification constitutues EARLY notice of events of POSSIBLE safety or public interest significance.
The information presented is as initially received _
without verification or evaluation and is basically all that is known by NRC staff en this date.
(D Facility: Metropolitan Edison Company Three Mile Island, Unit 2 7
Middletown, Pennsylvania
[t@
IlW 91 Docket Number 50-320
!#iY O 4168f
Subject:
ELEVATED TRITIUM LEVELS IN THE FUEL HANDLING BUILDING h MT* @
'Q At approximately 10:00 p.m. on April 29, 1981, licensee re resentati analytical results for airborne concentration of 3.1 x 10- uCi/cc (tri
-)
for a grab air sample taken beheen 2:00 p.m. to 7:00 p.m. earlier in the day. The sampling process was performed while EPICOR-II pro' cessed water, which was contaminated with H-3, was transferred to partially fill the "B" Spent Fuel Pool, which will be used to support the Submerged Demineralizer System operation. This sample was taken inside the pool. Subsequent samples were immediately taken at the 347' elevation (working area) of the Fuel Handling Building adjacent to the "B" pool.
The second sample results became available at 4:45 a.m., April 30, 1981, which was 2.2 x 10-5 uCi/cc (H-3). The 347' elevation was subsequently declared an airborne radioactivity area. The transfer process was secured at 2:30 a.m., April 30, 1981.
At approximately 10:00 a.m., a sample analysis indicated 1.2 x 10-6 uCi/cc, (H-3) and personnel entry into the area was resumed in that airborne (H-3) concentration was' reduced to below 25 percent of MPC (maximum permissible concentration per 10 CFR 20).
Licensee and NRC review of this event continues.
Media interest has been expected because o.f public sensitivity to TMI related events.
The Comonwealth of Pennsylvania has been informed. Neither the NRC or the licensee have made plans to issue a press release.
This preliminary notification is issued for information only and no further action other than routine followup by NRC is anticipated.
The N'RC TMI Program Office received notification of this occurrence at 7:45 a.m. today while monitoring the Reactor Building entry.
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Contact:
R. Conte 590-1125
. Thonus 590-1145
,&rd h$wh
. Fasano 590-1123 L. Barrett 590-1120 ol o
8105050602
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PN0-TMI-81 19 (continued) April 30,1981 i
DISTRIBUTION:
(Facsimile Transmission Times Noted)
[
IE:X005 MARYLAND NATIONAL Region I I
(IE:HQ Dist)
BANK BLDG Region II
[
W. J. Dircks, ED0 Region III H ST BLDG C. Michelson, AEDO Region IV Chairman Hendrie J. J. Fouchard, PA Region V Commissioner Ahearne N. M. Haller, MPA Commissioner Bradford G. W. Kerr, OSP (MAIL)
Commissioner Gilinsky H. K. Shapar, ELD R. Minogue, SD ACRS IE:X005 S. J. Chilk, SECY AIR RIGHTS BLDG Document Mgt. Br.
C. C. Kammerer, CA B. J. Snyder, NRR S. Ebbin, NSOC J. Tourtellotte i
PHILLIPS BLDG WILLSTE 3LDG Asst. Chief Hearing H. R. Denton, NRR J. G. Davis, NMSS Counsel, OELD R. H. Vollmer, NRR R. Murley, RES F. Schroeder, NRR D. F. Ross, NRR LANDOW BLDG (Fax by HQ)'
D. Eisenhut, NRR (6 MIN /PAGE)
S. H. Hanauer, NRR J. J. Cummings, OIA PRELIMINARY NOTIFICATION w
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