ML20209J362

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Forwards Summary of Electromagnetic Relief Valve Operation at Facility from Jan-Dec 1969,per Item 1 of 731219 Request. Future Relief Valve Operation Will Be Reported in Facility Semiannual Operating Repts
ML20209J362
Person / Time
Site: Oyster Creek, 05000000
Issue date: 01/18/1974
From: Finfrock I
JERSEY CENTRAL POWER & LIGHT CO.
To: Ziemann D
US ATOMIC ENERGY COMMISSION (AEC)
Shared Package
ML20209J032 List:
References
FOIA-87-40 654, NUDOCS 8705040271
Download: ML20209J362 (6)


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Jersey Central Power & Light Company

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MADISON AVENUE AT PUNCH BOWL ROAD e MORRISTOWN, N.J. 07960

  • 201-539-6111 888859 09 7008 General g .T. ", Public utilities Corporation arms January 18, 1974 6 i s

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' Mr. Dennis L. Ziemann, Chief 5 g.[b.)p,h S

th }f Operating Reactors Branch #2 e Directorate of Licensing .Wy;gi[+

\ ksRj ,s United States Atomic Energy Commission Washington, D. C. 20545

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Dear Mr. Ziemann:

This is in response to your letter of December 19, 1973 request-ing electromatic relief valve operational data regarding our Oyster Creek Nuclear Generating Station. Attached herewith is a summary tabulation of electromatic relief valse operation covering the period of plant startup testing and operation from January 1,1969 to present.

It is understood that this letter is in response to Item 1 of your request and we intend to respond to Item 2 before the specified deadline.

It is also our intention to report future relief valve operation in

, our facility semi-annual operating reports in a similar manner.

l l Very truly yours, i

A n . .

)Ivan 'IinR.f Finfrock, Afy &

Jr.

l Vice President l

c5 Attachment .

8705040271 870428 PDR FOIA THOMAS 87-40 PDR

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Summary of Electromatic Relief Valve Operation January 1, 1969 to December 31, 1969 D:te of Operation: June 30,1969 Purpose of Operation: Operability Test Mode of Initiation: Automatic Reactor Conditions Prior to Operation: The reactor was'subcritical.

Comments: Reactor triple low water level, drywell high pressure, and core spray booster pump discharge pressure signals were created to cause automatic operation of the relief valves.

1 Dr.te of Operation: August 11, 1969 l Purpose of Operation: Operability Test i Mode of Initiation: Automatic Reactor Condition Prior to Operation: The reactor was subcritical.

Comments: Reactor triple low water level, drywell high pressure, and core spray booster pump discharge pressure signals were created to cause automatic operation of the relief valves. .

D;te of Operation: September 21, 1969 ,

,1 Purpose of Operation: Startup Test #16

, Mode of Initiation: Manual l

4 Reactor Conditions Prior to Doeration:

i Steam Flow - 1.2 x 106 lbm/hr l.

Reactor Pressure - 980 psig

Electrical Output - 385 MW(e)

Comments: Each of the four (4) electromatic relief valves were independently i

tested and found to discharge .5 x 106 lbm/hr (8.55% rated steam flow) at the above conditions.

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  • Sumary of Electromatic Relief Valve Operation January 1,1970 to December 31, 1970 Date of Operation: February 15, 1970 ,
Purpose of Operation: Primary coolant system depressurization.

Mode of Initiation: Automatic ,

Reactor Conditions Prior to Operation: l Steam Flow - 4.95 x 106 lbm/hr '.,

Reactor Pressure - 985 psig Electrical Output - 450 MW(e) c-Comments: The reactor scrammed due to a high neutron flux sign' a l following a turbine trip. The steam pressure subsequently increased to the set point of the electron:atic relief valves (1125 psig) causing them to actuate. ,' ,,, q Date of Operation: December 25, 1970 ,

Purpose of Operation: Primary coolant syste'm depressurization.

Mode of Initiation: Automatic j Reactor Conditions Prior to Operation:

6 Steam Flow - 6.12 x 10 lba/hr Reactor Pressure - 1000 psig Electrical Output - 582 MW(e)

Comments: The reactor underwent an anticipatory scram due to a momentary closure of all four (4) main stop valves. The steam pressure subsequently increased to the set point of the electromatic zulief valves (1125 psig) causing them to actuate.

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Sumnary of Electromatic Relief Valve Operation

,. , January 1, 1971 to December 31, 1971 1

Date of Operation: November 7, 1971 Purpose of Operation: Operability Test Mode of Initiation: Automatic Reactor Conditions Prior to Operation: The reactor was suberitical.

! Comments: Reactor triple low water level, drywell high pressure, and core spray booster pump discharge pressure signals were created to cause automatic operation of the relief valves.

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Sumary of Electromatic Relief Valve Operation a

January 1,1972 to December 31, 1972 Date of Operation: December 29, 1972 Purnose of Operation: Primar'y coolant system depressurization.

Mode of Initiation: Automatic Reactor Conditions Prior to Operation:

Steam Flow - 7.35 x 106 lbm/hr Reactor Pressure - 1000 psig Electrical Output - 645 MW(e)

Comments: The reactor scrammed as the result of a generator trip from a loss of field. The reactor pressure increased to 1070 psig, which opened the electromatic relief valves, one of which did not reseat and the vessel depressurized to 200 psig in 60 minutes.

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Summary of Electromatic Relief Valve Operation January 1, 1973 to December 31, 1973 Date of Operation: May 28,1973 Purpose of Operation: Operability Test Mode of Initiation: Automatic Reactor Conditions Prior to Operation: The reactor was suberitical.

Comments: Reactor triple low water level, drywell high pressure, and core spray booster pump discharge pressure signals were created to cause automatic operation of the relief valves.

Date of Operation: June 30, 1973 Purpose of Operation: Primary coolant system depressurization.

Mode of Initiation: Automatic Reactor Conditions Prior to Operation:

6 Steam Flow - 7.45 x 10 lbm/hr Reactor Pressure - 1020 psig Electrical Ou:put - 625 MW(e)

Comments: The reactor scrammed due to a generator trip. The reactor pressure

, subsequently increased to the set point of the electromatic relief valves of 1070 psig, causing them to open.

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