ML14099A076
| ML14099A076 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 05/21/1979 |
| From: | Paulus R, Thompson D NRC OFFICE OF INSPECTION & ENFORCEMENT (IE) |
| To: | |
| References | |
| PNO-79-067AO, PNO-79-67AO, NUDOCS 7906060181 | |
| Download: ML14099A076 (2) | |
Text
IMMEDIATE PRELIMINARY NOTIFICATION May 21, 1979 PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE -- PNO-79-67AO This preliminary notification constitutes summary information of an event of safety or public interest significance.
The information presented is a sutmary of information as of 7:00 a.m. on May 21, 1979.
Facility:
Three Mile Island Unit 2 Middletown, Pennsylvania (DN 50-320)
Subject!
NUCLEAR INCIDENT AT THREE MILE ISLAND Plant Status orational:
- 1.
The average coolant temperature is being maintained at 170 degrees F by natural circulation. Pressure is about 300 psi- :Steam is being admitted to the main condenser through the turbine bypass valves from the A Steam Generator. The highest incore temperature reading is 301 degrees F.
- 2.
Hydrostatic testing of the existing decay heat removal system "B" loop has been performed satisfactorily. Leaks have been identified and are being corrected in the "A" loop.
- 3.
The pressurizer has been taken "solid" periodically to obtain confirmatory information on pressurizer level and to check primary system leak rate.
- 4.
The water level in the reactor building was measured and found to be 6.1' above floor level. This is about 450,000 gallons.
5 One of two primary system pressure indications now in use is giving erratic readings. Direct reading pressure gages can be connected to the system if needed.
Environmental Status Environmental radiation levels continue to be consistent with natural background levels. Approximately six minor releases have occurred during the past week (May 14-20) in conjunction with changing levels in the primary make-up tank and sampling the primary system.
Aerial and ground surveys taken during these releases indicated no radiation levels above background, except for a release at 1300 on May 16, when an aerial measurement above the stack read 0.05 mR/hr.
No radiation was detected on the ground.
During the period May 14-20, approxi mately 36 air samples were collected and all were less than MDA.
Vegetation and milk samples collected during this period also showed no activity above HDA.
EPA and FDA air, water milk and food samples collected during this past week up to May 19 showed no detectable activity from TjI.
CONTINUED 7906060181
- .4
Continued May 21, 1979 Page 2 PNO-79-67A0
Contact:
RCPaulus, IE x27246 DThompson, IE x28487 Distribution:
Transmitted H St 2
Chairman Hendrie Comwissioner Bradford S. J. Chilk, SECY Commissioner Kennedy Commissioner Ahearne C. C. Kamerer, CA Commissioner Gilinsky ACRS (For Distribution)
Transmitted: HNBB 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. MaLtsqn, NRR Region III j'.5 N.
X. Haller, MPA V. Stello, NRR Region IV R. G. Ryan, OSP R. S. Boyd, NRR Region V 12!00 H. K. Shapar, ELD SS Bldg (MAIL)
W. J. Dircks, NMSS J. J. Cummings, 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)
EPA DOE/EOC PEMA BRP (State of PA)
DCPA REW ___
Handcarry (FAA)
IMMEDIATE PRELIMINARY NOTIFICATION