ML19263E424
| ML19263E424 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 05/09/1979 |
| From: | Madsen G NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Cavanaugh W ARKANSAS POWER & LIGHT CO. |
| References | |
| NUDOCS 7906180142 | |
| Download: ML19263E424 (1) | |
Text
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UNITE D STATES CENTRAL FILES pn stooq o
NUCLEAR REGULATORY COMMISSION POR:HQ REClON IV 2
7, LPDR 5
..g 611 RYAN PLAZA DRIVE, SUITE 1000 I
AR LINGTON, TEXAS 76011 o.g, NSIC May 9, 1979 Docket No. 50-313 50-368 Arkansas Power and Light Company ATTN: Mr. William Cavanaugh III Vice President of Generation and Construction P. O. Box 551 Little Rock, Arkansas 72203 Gentlemen:
In accordance with Mr. Seyfrit's transmittal letter of April 9,1979, the enclosed Preliminary Notification (s) relating to the Nuclear Incident at Three Mile Island is forwarded for your infonnation.
Sincerely, h/4' G. L. Madsen, Chief, Reactor Operations and Nuclear Support Branch
Enclosure:
1.
PNO-79-67AM 2355 148 cc w/ enclosure:
Arkansas Nuclear One ATTN:
J. P. O'Hanlon, Manager P. 0. Box 608 Russellville, Arkansas 72801 L. Alexander, QC Supervisor (SameAddress) 7006180/G
w' IMMEDIATE PRELIMINARY NOTIFTCATION May 7 1979 FRELIMINARY NOTIFICATION OF AN EVENT OR LTUSUAL OCCURRENCE - PNO-79-67AM This preliminary notification provides updated information of safety or public interest significance.
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Facility: Three Mile Island Unit 2 Middletown, Pennsylvania
Subject:
NUCIIAR INCIDENT AT THREE MILE ISIAND Operational Status:
1.
Three of four trains of an independent, additional charcoal filter system are presently in operation.
Iodine concentrations in the gaseous effluent are consistently below continuous release limits and below normally detectable levels most of the time.
2.
Hydrostatic testing of the existing decay heat removal system ("B" loop) is in progress.
3.
The pressurizer has been taken " solid" to demonstrate continued decay heat removal capability with the primary coolant system completely filled and to obtain confirmatory information on pressurizer level.
4.
Measurement of the liquid level inside containment is planned in the over future by accouring the hydruotatit beod un the sump disc.3rge piping using a recently installed Heise gage.
5.
A measurement was made of the radioactivity inside the containment building.
It indicates that the present dose level from gases within the building is about 100 R/hr.
Other radiation ocureco auch==
activity deposited on the containment walls and water on the reactor building floor also contribute to the dose levels in the containment but cannot.be directly estimated at this time.
235*5 149 Environmental Statun Environmental radiation levele. continue to be consistent with natural background levels. Approximately thirteen minor releases have occurred during the past week (May 1-6) in conjunction with venting of the primary make-up tank.
Aerial and ground surveys taken during these releases indicated radiation levels at background, except for the periods 2000-2100 hrs on 5/1, 1500-2000 hrs on 5/3, and 0700-0800 hrs on 5/4, when aerial measurements reported I-131 at MDA levels and ground survey readings were 0.034 to 0.04 mr/hr. During the period May 1-6, approximately 37 air samples were collected and all were less than MDA. Vegetation samples collected following the releases were all less than MDA.
EPA air and water samples collected during the period April 26 to May 3 showed no evidence of. fission products (0.1-0.2 picoeuries per cubic meter I-131 for air, and 130 picocuries per liter I-131 for water).
CONTINUED IMMEDIATE PRELIMINARY NOTIFICATION790534ag5g
e, Continued May 7, 1979 Page 2 PNO-79-67AM
_C.qnt a ct: RCPaulus, IE x272463 DThompoon, IE, x28487 Distribution:
Transmitted H St MMf Chairman Hendric Comissioner Bradford S. J. Chilk, SECY Comissioner Kennedy Comissioner Ahearne C. C. Kamerer, CA (For Distribution)
Cocxsissioner Gilinsky* O Transmitted: MNBB fl.2 P. Bldg ITd&S J. G. Davis, IE L. V. Gossick, EDO H. R. Denton, NRR Region I g H. L. Ornstein, EDO
- 3. C. DeYoung, NRR Region II M*1df J. J. Fouchard, PA R. J. Mattson, NRR Region III R N. M. Haller, MPA V. Stello, NRR Region IV ff 3J R. G. Ryan, OSP R. S. Boyd, NRR Region V H. K. Shapar, ELD SS Bldg (MAIL)
W. J. Dircks, NMSS J. J. Cumings, OIA S. Levine, RES R. Minogue, SD IE (THI) Site (Provide copy to STATE)
C. Abraham, PA (Middletown - TMI-Information Center)
White House Situation Room FDAA (Provide copies to the Administrator and the Operations Center)
o (State of PA)
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"$3 HEW Handen t ry (FAA)
IMMEDIATE PRELIMINARY NOTIFICATION 2355 150