ML19308D070

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Forwards RO-77-09
ML19308D070
Person / Time
Site: Crystal River Duke Energy icon.png
Issue date: 02/09/1977
From: Stewart W
FLORIDA POWER CORP.
To: Moseley N
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE)
Shared Package
ML19308D071 List:
References
CS-77-24, NUDOCS 8002270570
Download: ML19308D070 (1)


Text

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Florida 9 February 1977 $ ) h MF c o. o a .* io" 3-0-3-a-1 CS-77-24 h h( q

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Mr. Norman C. Moseley, Director Docket No. 50-302  ;

Office of Inspmtion and Enforcement License #DPR-72 U. S. Nuclear Regulatory Commission Licensee Event Report 77-9 230 Peach ree St., N.W., Suite 818 l Atlanta, Georgia 30303 )

Dear Mr. Moseley:

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This report is submitted in accordance with Technical Specification 6.9.1 l and Regulatory Guide 1.16, Revision 4, Section 2.a. (9) as a written Four-teen (14) Day Report. Your office was notified on' 3 February 1977 of- this event.

While in Mode 4 (Hot Shutdown), two Decay Heat Valves (DHV-4 and DHV-41) on the pressure drop line did not open on Control Center actuation. They were quickly opened by hand.

l The cause of this event is believed to be the effect of pressure acting on the gate valve discs. A modification to provide a relief line has been  ;

initiated to prevent recurrence. In addition to this, as an interim measure, ,

the torque setting on the valve operator has been increased. )

No adverse consequences resulted from this event.

Very truly yours, FLORIDA POWER CORPORATION Ch Duk lM W. P. Stewart Director, Power Production DWP/feh Enclosure

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^ 1879 f'94k'S hie &PA Nuclear Plant Manager i

8002 270 NO f l

s General Office 3201 Thirty-fourin street souin . e o Box 14042, st Petersburg, Florda 33733 . 813-866-5151

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