ML20151X921
| ML20151X921 | |
| Person / Time | |
|---|---|
| Site: | 05000262 |
| Issue date: | 06/21/1977 |
| From: | Klingler G, Nolan F, Sniezek J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE) |
| To: | |
| References | |
| PNO-77-108, NUDOCS 9809180006 | |
| Download: ML20151X921 (1) | |
Text
..__.___... .. .~ ... . m a w o June. 1, 1977 pf6 A dOJun S I, C & %-* QW PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE--PNO This preliminary notification constitutes EARLY notice of an event of [ QfO POSSIBLE safety or public interest significance. The information i
l presented is as initially received without verification or evaluation and is basically all that is known by IE staff on this date.
Facility: Wisconsin Electric Power Company, Point Beach Unit 1 (Docket No. 50-262) Two Creeks, Wisconsin
Subject:
REACTOR COOLANT SYSTEM STEAM LEAK
. WisconsinElectricPowerCompanyreportedthatondune 20,1977, at about 1:00 p.m., the containment gaseous and particulate radiation monitors alarmed. This was followed by containment sump A high level alarm. From the frequency the sump was pumped, the reactor steam leak rate was calculated to be 6.5 gpm. Entry into containment determined steam was leaking from the area near the top of the pressurizer, but the actual leak source could not be identified due *i the steam. The facility Technical Specifications permit cont ., uperation with reactor coolant leakage up to 10 gpm provided the leak source is known.
The licensee reported that no Technical Specifications were violated, and there was no uncontrolled release of gaseous or liquid effluents.
The licensee started shutdown and cooldown of the plant at approximately 3:00 p.m. to determine the exact source of the leak and to make necessary repair 3.
') After the plant was cooled down and personnel were able to enter the area, the leak was located at the pressurizer spray valve. The leak to contain-i ment was through a failed pressure gauge sensing line.
MS An inspector from RIII (Chicago) has been sent to the site to review the event.
A press release is being made by RIII (Chicago) and the licensee. No
, ~ estimate of duratifon .of plant shutdown is available at this time. ~--"---
4 The RIII (Chicago) office received notification of this occurrence by telephune from the acting plant manager at 4:10 p.m. on June 20, 1977.
~This information is current as of 9:00 a.m. on June 21, 1977.
Contact:
GKlingler, IE x27451 FNolan, IE x27451 JSniezek, IE x27451 .
Distribution: TransmittedHStl\(d Chairman Rowden C'. C. Kammerer, CA G. F., Murphy, JCAE Commissioner Kennedy S. J. Chilk, SECY H. H. Whiteside, SCNR Coninissioner Gilinsky H. R. Myers, HCEE Transmitted: MNBBi'f7 PBldg)',df .
SS B1'dg 2A d 9 L. V. Gossick, EDO E. G. Case, NRR C. V. Smith, NMSS S . H. Hanauer T90 J. A. Harris, 'A "
W. G. Mcdonald, MIPC Luge (MAIL) E. Vola g
R. G. Ryan,.0SP T. J. McTiernan, 0IA Regio u,W IE [
H. K. Shapar, ELD PRELIMINARY NOTIFICATION 17M1 O
, 9809180006 770621 '