ML19273B833
| ML19273B833 | |
| Person / Time | |
|---|---|
| Site: | South Texas  |
| Issue date: | 05/22/1979 |
| From: | Seidle W NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Eric Turner HOUSTON LIGHTING & POWER CO. |
| References | |
| NUDOCS 7906180243 | |
| Download: ML19273B833 (1) | |
Text
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UNITE O STATES NUCLEAR REGULATORY COMMISSION n
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REGION IV o,
I 611 RYAN PLAZA DRIVE, SUIT E 1000
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AR LINGTON, TE X AS 76012 May 22,1979 Docket No. 50-498 50-499 Houston Lighting and Power Company ATTN: Mr. E. A. Turner, Vice President Power Plant Construction and Technical Services Post Office Box 1700 Houston, Texas 77001 Gentlemen:
Enclosed is supplement A0 to Preliminary Notification PNO-79-67, " Nuclear Incident at Three Mile Island," dated May 21, 1979.
Should you have any questions regarding this review, please contact this office.
Sincerely, M/ On W. C. Se d e, Chief Reactor struction and Engineering Support Branch
Enclosure:
PNO-79-67A0 7906180243
Y IMMEDIATE PRELIMINARY NOTIFICATION May 21, 1979 PRELIMINARY NOTIFICATION OF EVEhT OR UNUSUAL OCCURRENCE -- PNO-79-67A0 This preliminary notification constitutes summary information of an event of safety or public interest significance.
Thq information presented is a summary of information as of 7:00 a.m. on May 21, 1979.
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Facility: Three Mile ' Island Unit 2 Middletown, Pennsylvania (DN 50-320)
Subject:
NUCLEAR INCIDEh7 AT TIDIEE MILE ISLAND
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Plant Status 5#
Operational:
'- 0 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 degress F.
2.
Hydrostatic testing of the existing decay heat removal system "B" loop
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has been performed satisf actorily.
Leaks have been identified and are being corrected in the "A" loop.
3 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 th'e reactor building was measured and found to be 6.l' above floor level.
This is about 450,000 gallons.
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5.
One of two primary system pressure indications now in use is giving crratic 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 changina levels in the primary make-y tank and sampling the primary system. Aerial and ground surveys taken during these releases indicated no radiation 1cvels 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 sa=ples were collected and all were less than TDA. 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 TMI.
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CONTINUED 7906060181 NPe
. [I Continued May 21, 1979
- Page 2:
PHO-79-67A0 s
Contact:
RCPaulus, IE x27246 DThompson, IE x28487 Distribution:
Transmitted H St it: 08)
Chairman Hendrie Comissioner Bradford S. J. Chilk, SECY Comissioner Kennedy Comissioner Ahearne C. C. Ka=nerer, CA Comissioner Gilinsky ACRS (For Distribution)
Transmitted:
HNBB P. Bldg it'.co J. G. Davis; IE L. V. Cossick, EDO H. R. Denton, NRR Region I 1T^t4 f t.'t,f H. L. Ornstein, EDO R. C. DcYcung, NRR Region II Tl*.10 J. J. Fouchard, PA B. J. Mattson, NRR Region III p'.S f N. M. Haller, MPA V. Stello, NRR Region IV #2.*to R. G. Ryan, OSP R. S. Boyd, NRR Region V s >!an H. K. Shapar, ELD SS Bldg (MJA)
W. J. Dircks, NMSS J. J5 Cumings, OIA S. Levine, RES R. Minogue, SD 2-IE (TMI) Site (Piuv *de tupy to STATE)
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, va s.uddlet4Wa - Int-Intormation Center)
White House Situation Room Eg (Provide cooies to the Adraini v erarnr anr1 tha finara ti nna t'en e. A PEMA BRP'-(Sthte of PA)
DCPA DEV
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