ML18093B314
| ML18093B314 | |
| Person / Time | |
|---|---|
| Site: | Salem  |
| Issue date: | 11/16/1988 |
| From: | Miller L Public Service Enterprise Group |
| To: | NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| References | |
| 88-8, NUDOCS 8811290494 | |
| Download: ML18093B314 (4) | |
Text
1-1 OPS~G Public Service Electric and Gas Company P.o: Box E Hancocks Bridge, New Jersey 08038
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Salem Generating.Sfa~iori U. S. Nuclear Regulatory Commission Document Control Desk*
Washington, DC 20555
Dear Sir:
SALEM GENERATING STATION
. LICENSE NO. DPR-75 DOCKET NO. 50-311 UNIT NO. 2 SPECIAL REPORT 88-8.
November 16, 1988
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This Special Report describes a pressurizer overpressure protection system (POPS) actuation occurring on October 31, 1988.
This report is being submitted in accordance with the requirements of Technical Specification Action Statement 3.4.10.3.c pursuant to Technical Spe~ification 6.9.2. It is being submitted within 30 days as per the Action Statement.
MJP:pc Distribution The Energy People Sincerely yours, L. K. Miller General Manager-Salem Operations
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SPECIAL REPORT NUMBER 88~
PLANT IDENTIFICATION:
Salem Genera~~ng Station - Unit 2 Public Service:, Electric & Gas company Hancock es
- Brj;~ge, **New Jersey 08038 IDENTIFICA'l'ION*OF OCCURRENCE:
Pressurizer Overpressure Protection System* Channel II Actuation Due To An Equipment Problem Event Date(s):
10/31/88 Report Date:
11/i6/88 This report was initiated by Incident Report No.88-465 CONDITIONS PRIOR TO OCCURRENCE:
Mode 5 - Reactor Power Level 0% - Unit Load 0 MWe DESCRIPTION OF OCCURRENCE:
This Special Report addresses a Pressurizer Overpressure Protection System/(POPS) actuation.
The actuation.occurred on October 31, 1988 at 0833-hours.
This report is submitted for information in accordance with the requirements of Technical Specification Act;i.on Statement 3.4.10.3.c. which states:
In the event.that either the POPS's or the RCS vents are used to mitigate an RCS pressure transient, a Special Report shall be prepared and submitted to the Commission pursuant to Specification 6.9.2 within thirty (30) days.
The report shall describe the circumstances initiating the transient, the effect of the POPS's or vents on the transient and any corrective action necessary to prevent recurrence.
On October 31, 1988, with the Unit in Mode 5 (Cold Shutdown), while the board Nuclear Control Operator (NCO) was performing Reactor Coolant System (RCS) "Fill and Vent* operations, indicated.plant pressure increased to approximately 360 psig and Pressurizer Overpressure Protection Chamiel II (Power Operated Relief Valves 2PR2) actuated.;
The POPS valve closed within a few seconds following actuation and the.RCS pressure returned to approximately 325 psig.
APPARENT CAUSE OF OCCURRENCE:
_ The root cause of this event has been attributed.to an equipment/
problem.
Investigation of this event revealed that the Control Room
- Console pressure indication for Channel.II was reading approximately 20 psig low.
Channel II was the channel being used by the NCO to monit~r RCS pressure
- When No. 23 Reactor Coolant Pump (RCP) was started per Operations procedure II 1.3.4, "Filling and Venting the RCS", the resultant pressure spike was sufficient to actuate POPS.
During RCS fill and vent operations, RCPs are run for short durations (bumped) to remove entrained gas in the RCS.
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- SPECIAL REPORT 88-8
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- APPAREH'l' CAUSE OF OCCURRENCE:
The Channel>I::t: setpoint* for (must be lesilJf than 375 psig Statement 3'.:41,;*10. 3. a).
ANALYSIS OF OCCURRENCE:
POPS was set at approximately 370 psig as per Technical Specification Action
- The Pill-and Vent operations were performed in accordance with the respective procedures.
Valve 2PR2 remained open for a few seconds.
Rad the 2PR2 valve failed to close, the-operator would have responded by closing blocking valve 2PR7.
All systems and indications functioned as designed.
There was no undue*risk to the health or safety of the public due to this event.
In accordance with Technical Specification Action Statement 3.4.10.3.c, because the POPS was.
actuated to mitigate a RCS pressure transient, this Special Report is being submitted pursuant to the requirements of Technical Specification 6~9.2 *
. Valve 2PR1 did not open (Channel I). Investigation revea1e*d that the
- actuation setpoint was out of calibration ".high" by approximately 20 psig..
CORRECTIVE ACTION:
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Operations Department procedure II 1.3.4 has been reviewed.
No procedure modifications are required
- The POPS channels have been re-calibrated and equipment repaired/replaced as applicable.
This event will be reviewed by the Nuclear Training Department for inclusion in applicable training programs.
MJP:pc SORC Mtg.88-101
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General Manager -
Salem Operations
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~ps~G Public Service Electric and Gas Company P.O. Box 236 Hancocks Bridge, New Jersey 08038 Nuclear Department U.S. Nuclear Regulatory Commission Document Control Desk Washington, DC 20555 Dear Sir~
MONTHLY OPERATING REPORT SALEM NO. 2 DOCKET NO. 50-311 December 11, 1988 In compliance with Section 6.9.1.6, Reporting Requirements for the Salem Technical Specification, the original copy of the monthly operating reports for the month of November 1988 are being sent to you.
RH:sl Average Daily Unit Power Level Operating Data Report Unit Shutdowns and Power Reductions Safety Related Maintenance Major Plant Modification Operating Summary Refueling Information Sincerely yours,
- .K!.~!t General Manager -
Salem Operations cc:
Mr. William T. Russell Regional Administrator USNRC Region I 631 Park Avenue King of Prussia, PA 19406 Enclosures 8-1-7.R4 The Energy People 95-2168 (1 OOM) 12-84