ML20084S863

Ro:On 780129,RCS Pressure Exceeded Tech Spec Limit by 60 Psig.Cause Not Stated.Rhr Pumps Restarted to Reduce Pressure

ML20084S863
Person / Time
Site:	Robinson
Issue date:	01/30/1978
From:	Robinson H, Starkey R CAROLINA POWER & LIGHT CO., CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:	James O'Reilly, Volgenau E NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II), US ATOMIC ENERGY COMMISSION (AEC)
Shared Package
ML20084S866	List: ML20084S863
References
RSEP-78-5, NUDOCS 8306200025
Download: ML20084S863 (1)

Text

_ _ _ _ _ _ _ _ - - - - .

w - - - - - - ~ ~

f fhh >'l' /(

E HE . Oj" Carohna Pou,er & t6ght Company -f .  ;

pursr M E aLTIxt

~ /

H. B. P.OBINSON STEAM ELECTRIC PLANT 'l Post office Box 790 'j Hartsville, South Carolina 29550 January 30, 1978 '

e4/

fD Robinson File No. 2-0-4-a-1 RSEP-78-5 Mr. Janes P. O'Refily, Of rea: tor U. S. Nuclear Regulatory Co= mission Region II, Suite 1217 230 Peachtree Street, N. %(.

Attenta, Ceargia 30303 Dr. Ernst Volgenau, Director U. S. Nuclear Regulatory Co= mission Directorate of Regulatory Operations Mcshington, D. C. 20555

Dear Sirs:

In accordance with Section 6.9.2.a.2 of the Technical Specifications, the following Reportable Occurrence in subnitted:

On Jcnuary 29, 1978, Reactor Coolant System pressure exceeded Technical Specification limits as shown in two minutes. figure .3.1-2 by 60 paig for approximately ntabic.

The primary systen was solid at 360 paig, 155 F and temperature A and C Reactor Coolant Pumps were running, and the RHR Pumps were stopped in preparation for a refueling P.T. When the RHR Pump was stopped a pressure increase was experienced and was terminated at 560 paig by in'tia-tion of a manual pronoure van thensafety injection signal which started both RHR Pumps. The reduced to below 500 psig. Total titie in excess of Techni-col Specification pressure limit was approximately two crinutes.

This was reported to Mr. Harold Banks' Office of Carolina Power and Light on Jcnuaryand Company 30, Mr. Barrell Minckley of the Nuclear Regulatory Commission, Atlanta.

1978.

Very truly yours,

,c' '

7 ~

R. B. Starkey4 3 . Manager H. B. Robinson SEG Plant REM /1d r306200025 780130 PDR ADOCK 05000261 S PDR

__