ML18139B113
| ML18139B113 | |
| Person / Time | |
|---|---|
| Site: | Surry  |
| Issue date: | 02/27/1981 |
| From: | Sylvia B VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| To: | Harold Denton, Eisenhut D Office of Nuclear Reactor Regulation |
| References | |
| RTR-NUREG-0737, RTR-NUREG-737, TASK-2.K.3.17, TASK-TM 140, NUDOCS 8103040333 | |
| Download: ML18139B113 (18) | |
Text
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VJRPINIA ELECTRIC AND POWER COMPANY RICHMOND,VIRGl:NXA 23261 February 27, 1981 Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation Attn:
Mr. Darrell G. Eisenhut, Director Division of Licensing U. S. Nuclear Regulatory Commission Washington, D. C.
20555 Gentlemen:
Serial No. 140 NO/WRM:ms Docket Nos. 50-280 50-281 License Nos. DPR-32 DPR-37 ADDITIONAL NUREG-0737 POST-TM!
REQUIREMENTS INFORMATION This letter provides to you our submittal of responses for Surry Power Station to Item II.K. 3.17 of NUREG-0737.
In accordance with our response to NUREG-0737 dated December 15, 1980 (Serial No.
985) and our letter dated December 31, 1980 (Serial No. 1022), Surry Power Station ECCS outage informa-tion required by Item II.K.3.17 is enclosed.
Enclosure Very truly yours,
- t!.fe!o B. R. Sylvia Manager - Nuclear Operations and Maintenance
- Sill 0904 C -;:f~
0
.I ECCS OUTAGE REPORT This report is concerned with the outages of the Emergency Core Cooling System (ECCS) of Surry Units 1 and 2 for the 5 year period ending December 1980.
The data collected is presented as a response to the requirements of NUREG 0737, Lt.em II.k.3.17-1 and will address the following four criteria as required by NUREG 0737.
These four criteria are:
(1) outage dates and duration of out-ages; (2) *cause of the outage; (3) ECG Systems or components involved in the outage; (4) correction action taken.
The primary methods utilized in collecting the data consisted of identifying the ECG Systems/Components to be examined, and of reviewing the Licensee Event Reports and Periodic Surveillance Tests for the appropriate time period.
Other documents used in this review included Maintenance Reports, Control Room Operators' Logs, and the Shift Supervisor's Logs.
Outage data for the 113 Emergency Diesel Generator will be found under both Unit 1 and Unit 2 headings as this is a shared generator.
Placement of the data was under the unit that was most affected by the outage.
The equipment identified as ECCS equipment and the total outage duration times are as follows for each unit.
UNIT 1 Emergency Power System III EDG 1/3 EDG Safety Injection System Recirculation Spray System Charging Pump Component Cooling Service Water System UNIT 2 Emergency Power System 112 EDG 1/3 EDG Safety Injection System Recirculation Spray System Charging Pump Component Cooling Service Water System MAINT. HOURS 115.5 1.0 74.5 0.25 48.2 14.6 MAINT. HOURS 0.0 1.0
- 51. 7 7.0 73.9 TESTING HOURS 156.0 99.0 1.5 157.5 TESTING HOURS 126.0 81.0 6.5 126.5
..,,..-**,.. The equipment identified as ECCS equipment and the average outage duration times per month are as follows for each unit.
Emergency Power System Safety Injection System Recirculation Spray System Charging Pump Component Cooling Service Water System Unit 1 Unit 2 Unit 1 Unit 2 Unit 1 Unit 2 Unit 1 Unit 2 Unit 1 Unit 2 HOURS 4.5 (f/:1 EDG)
COMPONENT Ill Emergency Diesel Generator I
l CAUSE OF OUTAGE SURRY POWER STATION UNIT Ill ECCS OUTAGE REPORT EMERGENCY POWER SYSTEM CORRECTIVE ACTION Crack in cylinder 1117 allowed Replaced all damaged parts.
water to enter causing extensive damage when diesel started.
Crack in cylinder head #1 allowed Replaced cylinder head water to enter cylinder.
1/:l, 2, and 16.
Cylinder head #19 cracked.
Replaced cylinder head
- 1, 2 and 16.
Cylinder head 117 cracked.
Replaced cylinder head.
Base tank switch sticking Repaired switch.
preventing fuel flow from day tank.
Periodic Test 22.3A Completed Test.
Periodic Test 22.3A Completed Test.
Periodic Test 22.3A Completed Test.
Periodic Test 22.3A Completed Test.
Periodic Test 22.3A Completed Test.
Periodic Test 22.3A Completed Test.
Periodic Test 22.3A Completed Test.
Periodic Test 22.3A Completed Test.
Periodic Test 22.3A Completed Test.
Periodic Test 22.3A Completed Test.
Periodic Test 22.3A Completed Test.
Periodic Test 22.3A Completed Test.
Periodic Test 22.3A Completed Test.
Periodic Test 22.3A Completed Test.
Periodic Test 22.3A Completed Test.
Periodic Test 22.3A Completed Test.
Periodic Test 22.3A Completed Test.
Periodic Test 22.3A Completed Test.
Periodic Test 22.3A Completed Test.
Periodic Test 22.3A Completed Test.
Periodic Test 22.3A Completed Test.
Periodic Test 22.3A Completed Test.
Periodic Test 22.3A Completed Test.
Periodic Test 22.3A Com:eleted Test.
11 OUTAGE OUTAGE DURATION DATES (HOURS) 04-16-76 77.00 05-08-76 10.50 07-02-76 13.80 e 07-23-76 11.92 09-02-80 2.25 01-05-76 3.00 01-30-76 3.00 03-02-76 3.00 04-04-76 3.00 05-06-76 3.00 05-14-76 3.00 06-02-76 3.00 07-03-76 3.00 07-13-76 3.00 07-21-76 3.00 08-02-76 3.00 -
08-10-76 3.00 08-24-76 3.00 09-01-76 3.00 10-01-76 3.00 10-11-76 3.00 02-02-77 3.00 02-02-77 3.00 03-02-77 3.00 03-02-77 3.00 06-02-77 3.00 07-02-77 3.00 08-02-77 3.00 09-02-77 3.00
SURRY POWER STATION UNIT /fl ECCS OUTAGE REPORT EMERGENCY POWER SYSTEM I'
OUTAGE OUTAGE DURATION COMPONENT CAUSE OF OUTAGE CORRECTIVE ACTION DATES (HOURS)
/13 Emergency Periodic Test 22.3C Completed Test.
06-08-76 3.00 Diesel Generator Periodic Test 22.3C Completed Test.
06-09-76 3.00 Periodic Test 22.3C Completed Test.
06-10-76 3.00 Periodic Test 22.3C Completed Test.
07-02-76 3.00
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Periodic Test 22.3C Completed Test.
08-10-76 3.00 e Periodic Test 22.3C Completed Test.
09-01-76 3.00 Periodic Test 22.3C Completed Test.
10-11-76 3.00 Periodic Test 22.3C Completed Test.
03-02-77 3.00 Periodic Test 22.3C Completed Test.
07-03-77 3.00 Periodic Test 22.3C Completed Test.
07-06-77 3.00 Periodic Test 22.3C Completed Test.
09-03-77 3.00 Periodic Test 22.3C Completed Test.
11-03-77 3.00 Periodic Test 22.3C Completed Test.
01-03-77 3.00 Periodic Test 22.3C Completed Test.
03-06-78 3.00 Periodic Test 22.3C Completed Test.
04-18-78 3.00 Periodic Test 22.3C Completed Test.
04-19-78 3.00 Periodic Test 22.3C Completed Test.
01-05-79 3.00 Periodic Test 22.3C Completed Test.
11-06-79 3.00 Periodic Test 22.3C Completed Test.
02-06-80 3.00 Periodic Test 22.3C Completed Test.
06-11-80 3.00 Periodic Test 22.3C Completed Test.
07-06-80 3.00 Periodic Test 22.3C Completed Test.
07-25-80 3.00 e Periodic Test 22.3C Completed Test.
09-07-80 3.00 NOTE:
The following Periodic Tests were accomplished using Unit 2 Period.ic Test.
However, only Unit 1 was operating Periodic Test 22.3C Completed Test.
10-05-76 3.00 Periodic Test 22.3C Completed Test.
04-06-78 3.00 Periodic Test 22.3C Completed Test.
10-06-78 3.00 Periodic Test 22.3C Completed Test.
02-06-79 3.00 Periodic Test 22.3C Completed Test.
12-06-79 3.00 I L_
SURRY POWER STATION UNIT #1 ECCS OUTAGE REPORT EMERGENCY POWER SYSTEM 11 OUTAGE OUTAGE DURATION COMPONENT CAUSE OF OUTAGE CORRECTIVE ACTION DATES (HOURS) fll Emergency Periodic Test 22.3A Completed Test.
10-02-77 3.00 Diesel Generator Periodic Test 22.3A Completed Test.
11-02-77 3.00 Periodic Test 22.3A Completed Test.
01-02-78 3.00 Periodic Test 22.3A Completed Test.
01-03-78 3.00 Periodic Test 22.3A Completed Test.
02-02-78 3.00 e Periodic Test 22.3A Completed Test.
03-02-78 3.00 Periodic Test 22.3A Completed Test.
04-03-78 3.00 Periodic Test 22.3A Completed Test.
04-19-78 3.00 Periodic Test 22.3A Completed Test.
08-02-78 3.00 Periodic Test 22.3A Completed Test.
09-02-78 3.00 Periodic Test 22.3A Completed Test.
10-02-78 3.00 Periodic Test 22.3A Completed Test.
11-02-78 3.00 Periodic Test 22.3A Completed Test.
11-02-78 3.00 Periodic Test 22.3A Completed Test.
12-02-78 3.00 Periodic Test 22.3A Completed Test.
01-04-79 3.00 Periodic Test 22.3A Completed Test.
01-15-79 3.00 Periodic Test 22.3A Completed Test.
02-02-79 3.00 Periodic Test 22.3A Completed Test.
03-02-79 3.00 Periodic Test 22.3A Completed Test.
11-02-79 3.00 Periodic Test 22.3A Completed Test.
12-02-79 3.00 Periodic Test 22.3A Completed Test.
12-14-79 3.00 Periodic Test 22.3A Completed Test.
02-03-80 3.00 9 Periodic Test 22.3A Completed Test.
06-10-80 3.00 Periodic Test 22.3A Completed Test.
07-02-80 3.00 Periodic Test 22.3A Completed Test.
07-25-80 3.00 Periodic Test 22.3A Completed Test.
09-02-,80 3.00 Periodic Test 22.3A Completed Test.
09-03-80 3.00 Periodic Test 22.3A Com:eleted Test.
07-27-76 3.00 f/3 Emergency Gauge in cooling water system Replaced gauge.
08-02-78 1.00 blew out.
Periodic Test 22.3C Completed Test.
01-02-76 3.00 Periodic Test 22.3C Completed Test.
03-03-76 3.00 Periodic Test 22.3C Completed Test.
05-06-76 3.00 Periodic Test 22.3C Completed Test.
05-21-76 3.00 Periodic Test 22.3C Com:eleted Test.
06-07-76 3.00
COMPONENT Boron Injection Tank l-CH-P-2A 1-SI-TK-lA 1-SI-TK-lB 1-SI-TK-lC CLS SURRY POWER STATION UNIT fll ECCS OUTAGE REPORT SAFETY INJECTION SYSTEM CAUSE OF OUTAGE Recirculation of BIT stopped to allow repair of l-CH-85.
Recirculation of BIT stopped to allow repair of l-CH-125.
Recirculation of BIT stopped to allow installation and subsequent removal of a blind flange on line l"-CH-56-152.
BIT boron concentration less than T.S. due to erroneous valve line-up.
Recirculation of BIT stopped to allow repair of valves l-CH-83 and l-CH-95.
Recirculation of BIT stopped to allow repair of valve l-CH-98.
Recirculation of BIT stopped to allow repairs to l-CH-98.
Pump shaft broken.
Moisture in air line to HCV-1852A caused a delay in closing of the valve allowing the "A" accumulator level to decrease below T.S. levels.
Check valves l-SI-128 and l-SI-130 leaking by causing dilution of "B" accumulator.
When attempting to pressurize the accumulator, a partially open valve (HCV-1936) and a body to bonnet leak on valve HCV-1549, caused acc. pressure to decrease to 540 psig.
Jumper used to defeat CLS not removed after refueling.
CORRECTIVE ACTION Replaced valve l-CH-85.
Repaired valve l-CH-125.
The flange was installed to clear a suspected Boric Acid Plug - no obstruction was found.
Corrected valve line-up, Retire. BIT with "B" Boric Acid Storage Tank.
Replaced diaphragms.
Replaced diaphragm.
Replaced diaphragm.
Replaced pump shaft.
Cleared air line and refilled accumulator Initiated recirculation of "B" accumulator with RWST to increase boron concentration.
Repaired HCV-1549 and HCV-1936.
Removed jumper.
OUTAGE DATES 03-26-76 08-23-76 09-17-76 11-29-78 01-26-77 02-20-77 04-07-78 01-23-80 02-06-80 07-02-76 09-09"-76 07-21-76 OUTAGE DURATION (HOURS) 0.20 0.58 0.13 2.00 0.23 0.33 0.05 13.00 0.42 e
e 1.33 4.55 3.50
COMPONENT RWST SURRY POWER STATION UNIT 111 ECCS OUTAGE REPORT SAFETY INJECTION SYSTEM CAUSE OF OUTAGE CORRECTIVE ACTION Volume of tank specified by A.E.
Calculated correct different than that assumed in and filled RWST to the order for modification of than this level.
license dated 06-29-78.
Periodic Test 18.7 Completed Test.
Periodic Test 18.7 Completed Test.
Periodic Test 18.7 ComEleted Test.
OUTAGE OUTAGE DURATION DATES (HOURS) level 08-19-80 greater 02-05-80 0.50 -
08-11-80 0.50 09-05-80 0.50
SURRY POWER STATION UNIT 111 ECCS OUTAGE REPORT RECIRCULATION SPRAY SYSTEM OUTAGE OUTAGE DURATION
.COMPONENT CAUSE OF OUTAGE CORRECTIVE ACTION DATES (HOURS) 1-RS-6 Recirculation valve left oeen.
Closed valve.
09-09-80 0.25 Periodic Test 17.3 Completed Test.
01-03-76 4.50 Periodic Test 17.3 Completed Test.
02-03-76 4.50 Periodic Test 17.3 Completed Test.
03-03-76 4.50 Periodic Test 17.3 Completed Test.
04-08-76 4.50
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Periodic Test 17.3 Completed Test.
06-02-76 4.50 e Periodic Test 17.3 Completed Test.
07-03-76 4.50 Periodic Test 17.3 Completed Test.
08-04-76 4.50 Periodic Test 17.3 Completed Test.
09-04-76 4.50 Periodic Test 17.3 Completed Test.
10-05-76 4.50 Periodic Test 17.3 Completed Test.
01-19-77 4.50 Periodic Test 17.3 Completed Test.
02-03-77 4.50 Periodic Test 17.3 Completed Test.
03-03-77 4.50 Periodic Test 17.3 Completed Test.
06-04-77 4.50 Periodic Test 17.3 Completed Test.
07-03-77 4.50 Periodic Test 17.3 Completed Test.
08-03-77 4.50 Periodic Test 17.3 Completed Test.
09-04-77 4.50 Periodic Test 17.3 Completed Test.
10-09-77 4.50 Periodic Test 17.3 Completed Test.
11-06-77 4.50 Periodic Test 17.3 Completed Test.
01-05-78 4.50 Periodic Test 17.3 Completed Test.
02-03-78 4.50 Periodic Test 17.3 Completed Test.
03-10-78 4.50 Periodic Test 17.3 Completed Test.
04-16-78 4.50 e Periodic Test 17.3 Completed Test.
07-15-78 4.50 Periodic Test 17.3 Completed Test.
10-16-78 4.50 Periodic Test 17.3 Completed Test.
11-15-78 4.50 Periodic Test 17.3 Completed Test.
01-16-79 4.50 Periodic Test 17.3 Completed Test.
02-16-7-9 4.50 Periodic Test 17.3 Completed Test.
11-15-79 4.50 Periodic Test 17.3 Completed Test.
12-15-79 4.50 Periodic Test 17.3 Completed Test.
01-06-80 4.50 Periodic Test 17.3 Completed Test.
02-15-80 4.50 Periodic Test 17.3 Completed Test.
05-15-80 4.50 Periodic Test 17.3 Completed Test.
06-15-80 4.50 Periodic Test 17.3 Completed Test.
08-15-80 4.50 Periodic Test 17.3 Comeleted Test.
09-04-80 4.50
COMPONENT l-CC-P-2A l-CC-P-2B CAUSE OF OUTAGE Motor bearing failed.
Pump bearing failed.
SURRY POWER STATION UNIT #1 ECCS OUTAGE REPORT COMPONENT COOLING SYSTEM CORRECTIVE ACTION Replaced bearings.
Replaced bearings.
OUTAGE OUTAGE DURATION DATES (HOURS) 02-08-77 28.00 10-09-78 20.17
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COMPONENT 1-SW-132 l-SW-110 1-SW-107 SURRY POWER STATION UNIT Ill ECCS OUTAGE REPORT SERVICE WATER SYSTEM CAUSE OF OUTAGE Stem corroded causing valve disc to drop and stop flow from Charging Pump intermediate Seal Cooler 1-SW-E-IB.
Stem corroded causing valve disc to drop and stop flow to Charging Pump Intermediate Seal Cooler 1-SW-E-IB.
Stem corroded allowing valve disc to drop and stop flow to 1-SW-P-lOA Charging Pump Service Water Pum.
CORRECTIVE ACTION Replaced valve stem.
Replaced valve stem.
Replaced valve.
OUTAGE DATES 03-05-78 12-04-78 11-27-79 OUTAGE DURATION (HOURS)
- 0. 75 0.83 e 12.50
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SURRY POWER STATION UNIT #2 ECCS OUTAGE REPORT EMERGENCY POWER SYSTEM OUTAGE OUTAGE DURATION COMPONENT CAUSE OF OUTAGE CORRECTIVE ACTION DATES (HOURS) f/3 Emergency Air motor worn out.
Rebuilt motor.
11-15-80 4.32 Diesel Generator
- 2 Emergency Periodic Test 22.3B Completed Test.
01-01-76 3.00 Diesel Generator Periodic Test 22.3B Completed ~est.
02-01-76 3.00 Periodic Test 22.3B Completed Test.
03-01-76 3.00
- \\
Periodic Test 22.3B Completed Test.
04-01-76 3.00
\\
Periodic Test 22.3B Completed Test.
06-03-76 3.00 e Periodic Test 22.3B Completed Test.
07-21-76 3.00 Periodic Test 22.3B Completed Test.
07-01-76 3.00 Periodic Test 22.3B Completed Test.
01-01-77 3.00 Periodic Test 22.3B Completed Test.
02-01-77 3.00 Periodic Test 22.3B Completed Test.
05-01-77 3.00 Periodic Test 22.3B Completed Test.
06-01-77 3.00 Periodic Test 22.3B Completed Test.
07-01-77 3.00 Periodic Test 22.3B Completed Test.
08-01-77 3.00 Periodic Test 22.3B Completed Test.
09-02-77 3.00 Periodic Test 22.3B Completed Test.
11-01-77 3.00 Periodic Test 22.3B Completed Test.
12-02-77 3.00 Periodic Test 22.3B Completed Test.
12-04-77 3.00 Periodic Test 22.3B Completed Test.
01-01-78 3.00 Periodic Test 22.3B Completed Test.
01-03-78 3.00 Periodic Test 22.3B Completed Test.
02-01-78 3.00 Periodic Test 22.3B Completed Test.
03-04-78 3.00 e Periodic Test 22.3B Completed Test.
05-04-78 3.00 Periodic Test 22.3B Completed Test.
05-11-78 3.00 Periodic Test 22.3B Completed Test.
05-24-78 3.00 Periodic Test 22.3B Completed Test.
06-05-78 3.00 Periodic Test 22.3B Completed Test.
07-04-78 3.00 Periodic Test 22.3B Completed Test.
08-04-78 3.00 Periodic Test 22.3B Completed Test.
09-04-78 3.00 Periodic Test 22.3B Completed Test.
10-04-78 3.00 Periodic Test 22.3B Completed Test.
12-04-78 3.00 Periodic Test 22.3B Completed Test.
01-04-79 3.00 Periodic Test 22.3B Completed Test.
01-15-79 3.00 Periodic Test 22.3B Completed Test.
01-18-79 3.00 Periodic Test 22.3B Completed Test.
02-04-79 3.00
COMPONENT 112 Emergency Diesel Generator
- 3 Emergency Diesel Generator NOTE:
The following
/13 Emergency Diesel Generator CAUSE OF OUTAGE Periodic Test 22.3B Periodic Test 22.3B Periodic Test 22.3B Periodic Test 22.3B Periodic Test 22.3B Periodic Test 22.3B Periodic Test 22.3B Periodic Test 22.3B Periodic Test 22.3C Periodic Test 22.3C Periodic Test 22.3C Periodic Test 22.3C Periodic Test 22.3C Periodic Test 22.3C Periodic Test 22.3C Periodic Test 22.3C Periodic Test 22.3C Periodic Test 22.3C Periodic Test 22.3C Periodic Test 22.3C Periodic Test 22.3C Periodic Test 22.3C Periodic Test 22.3C Periodic Test 22.3C Periodic Test 22.3C Periodic Test 22.3C Periodic Test 22.3C SURRY POWER STATION UNIT #2 ECCS OUTAGE REPORT EMERGENCY POWER SYSTEM CORRECTIVE ACTION Completed Test.
Completed Test.
Completed Test.
Completed Test.
Completed Test.
Completed Test.
Completed Test.
Completed Test.
Completed Test.
Completed Test.
Completed Test.
Completed Test.
Completed Test.
Complete~ Test.
Completed Test.
Completed Test.
Completed Test.
Completed Test.
Completed Test.
Completed Test.
Completed Test.
Completed Test.
Completed Test.
Completed Test.
Complete4 Test.
Completed Test.
Completed Test.
Periodic Tests were accomplished using Unit 1 Periodic Test.
Periodic Test 22.3C Completed Test.
Periodic Test 22.3C Completed Test.
Periodic Test 22.3C Completed Test.
Periodic Test 22.3C Completed Test.
Periodic Test 22.3C Completed Test.
Periodic Test 22.3C Completed Test.
Periodic Test 22.3C Completed Test.
Periodic Test 22.3C Completed Test.
OUTAGE OUTAGE DURATION DATES (HOURS) 08-07-80 3.00 09-04-80 3.00 11-05-80 3.00 11-15-80 3.00 11-16-80 3.00 11-25-80 3.00-12-01-80 3.00 12-09-80 3.00 02-03-76 3.00 04-05-76 3.00 06-04-76 3.00 08-03-76 3.00 02-03-77 3.00 06-03-77 3.00 08-03-77 3.00 10-02-77 3.00 12-03-77 3.00 02-01-78 3.00 06-05-78 3.00 08-06-78 3.00 11-03-78 3.00 12-06-78 3.00 01-16-79 3.ooe 01-17-79 3.00 10-06-80 3.00 11-24-80 3.00 12-06-80 3.00 However, only Unit 2.was operating 01-03-77 3.00 05-03-77 3.00 05-06-78 3.00 06-06-78 3.00 09-07-78 3.00 08-07-80 3.00 09-07-80 3.00 11-05-80 3.00
COMPONENT Boron Injection Tank 2-SI-TK-lB SURRY POWER STATION UNIT 112 ECCS OUTAGE REPORT SAFETY INJECTION SYSTEM CAUSE OF OUTAGE Leakage through MOV-2867C and D caused a dilution of the BIT.
The Contents of the Batch Tank were transferred to the "C" Boric Acid Storage Tank and the BIT causing the boric acid concentra-tion to rise above T.S. limits.
Improper valve lineup caused a dilution of BIT and "C" BAST.
Leakage through MOV-2876A and/or MOV-2867B diluting BIT to less T. S. low limit.
An obstruction stopped recir-culation of the BIT.
Dilution of BIT because of a cracked diaphragm on 1-CH-144.
Leakage through MOV-2867C and D diluting the BIT.
When attempting to pressurize the accumulator, the low N header pressure caused a furtffer reduc-tion of accumulator pressure.
Contents of the boric acid bottoms tank were transferred to the "C" Boric Acid Storage Tank & thence the BIT causing the boric acid concen-tration to rise above T.S. limits.
CORRECTIVE ACTION Initiated recirculation of BIT with "B" Boric Acid Storage Tank to increase boron concentration.
Dilute to the required concentration.
Increased boric acid concentration.
Closed valves manually and recirculated BIT with "C" Boric Acid Storage Tank to increase concentration.
Established recirculation with "B" Boric Acid Storage Tank.
Recirculate BIT with "B" Boric Acid Storage Tank and replaced diaphragm on valve.1-CH-144.
Closed valves manually and increased boric acid con-centration of BIT.
Repaired Leaking N2 fittings and repressurized.
Dilute to required concen-trations.
OUTAGE DATES 11-09-77 08-22-80 11-05-80 12-30-76 01-26-77 08-15-77 10-31-77 08-26-80 08-15-80 OUTAGE DURATION (HOURS) 0.67 0.96 3.50
- 1. 75 1.20 0.57 1.58 0.81
COMPONENT 2-SI-TK-IB.
2-SI-TK-lC 2-SI-P-lA MOV-2862B 4"-CH-389 SURRY POWER STATION UNIT #2 ECCS OUTAGE REPORT SAFETY INJECTION SYSTEM CAUSE OF OUTAGE CORRECTIVE ACTION The accumulator was filled to a Repaired instrumentation level greater than allowed by T.S.
and drained accumulator.
Check valve 2-SI-127 leaking Isolated valve and recir-through allowing dilution of culated accumulator with "B" accumulator.
RWST.
Check valves 2-SI-147 and Initiated recirculation of 2-SI-145 leaking allowing accumulator with RWST to dilution of "C" accumulator.
increase boron concentration.
Rain water from a leaking roof Repaired roof hatch and hatch grounded out the motor dried motor connections.
connection box.
Valve binding caused motor Adjusted valve and reset overloads to function.
overloads.
Pipe support for alternate Modified to conform to charging header not installed drawings.
as desi ned.
Periodic Test 18.7 Completed Test.
Periodic Test 18. 7 Completed Test.
Periodic Test 18. 7 Completed Test.
Periodic Test 18. 7 Completed Test.
Periodic Test 18. 7 Completed Test.
Periodic Test 18.7 Completed Test.
Periodic Test 18.7 Completed Test.
Periodic Test 18.7 Completed Test.
Periodic Test 18.7 Completed Test.
Periodic Test 18.7 Completed Test.
Periodic Test 18.7 Completed Test.
Periodic Test 18.7 Completed Test.
_Periodic Test 18. 7 Completed Test.
OUTAGE OUTAGE DURATION DATES (HOURS) 08-16-80 4.03 11-08-77 3.92
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08-13-76 2.75 e 11-05-80 4.83 06-15-76 21.92 10-15-80 2.12 08-09-80 0.50 09-05-80
- 0.50 09-07-80 0.50 09-15-80 0.50 10-07-80 0.50 11-07-80 0.50 e 11-19-80 0.50 11-21-80 0.50 12-07-80 0.50 12-12-80 0.50 12-13-80 0.50 12-13-80 0.50 12-27-80 0.50
SURRY POWER STATION UNIT #2 ECCS OUTAGE REPORT RECIRCULATION SPRAY SYSTEM OUTAGE OUTAGE DURATION COMPONENT CAUSE OF OUTAGE CORRECTIVE ACTION DATES (HOURS)
Recirculation Spray Periodic Test 17.3 Completed Test.
01-26-76 4.50 Periodic Test 17.3 Completed Test.
02-25-76 4.50 Periodic Test 17.3 Completed Test.
06-24-76 4.50 Periodic Test 17.3 Completed Test.
07-25-76 4.50
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i Periodic Test 17.3 Completed Test.
08-25-76 4.50 j
Periodic Test 17.3 Completed Test.
12-30-76 4.50 e Periodic Test 17.3 Completed Test.
01-24-77 4.50 Periodic Test 17.3 Completed Test.
04-23-77 4.50 Periodic Test 17.3 Completed Test.
05-25-77 4.50 Periodic Test 17.3 Completed Test.
06-24-77 4.50 Periodic Test 17.3 Completed 'rest.
07-24-77 4.50 Periodic Test 17.3 Completed Test.
12-23-77 4.50 Periodic Test 17.3 Completed Test.
01-23-78 4.50 Periodic Test 17.3 Completed Test.
02-24-78 4.50 Periodic Test 17.3 Completed Test.
04-25-78 4.50 Periodic Test 17.3 Completed Test.
06-25-78 4.50 Periodic Test 17.3 Completed T;est.
06-30-78 4.50 Periodic Test 17.3 Completed Test.
08-24-78 4.50 Periodic Test 17.3 Completed Test.
09-24-78 4.50 Periodic Test 17.3 Completed Test.
10-23-78 4.50 Periodic Test 17.3 Completed Test.
12-23-78 4.50 Periodic Test 17.3 Completed Test.
01-24-79 4.50 e Periodic Test 17.3 Completed Test.
08-23-80 4.50 Periodic Test 17.3 Completed Test.
09-10-80 4.50 Periodic Test 17.3 Completed Test.
10-12-80 4.50 Periodic Test 17.3 Completed Test.
11-10-80 4.50 Periodic Test 17.3 Completed +est.
11-25-80 4.50 Periodic Test 17.3 Completed Test.
12-11-80 4.50
COMPONENT 2-CC-P-2B CAUSE OF OUTAGE SURRY POWER STATION UNIT #2 ECCS OUTAGE REPORT CHARGING PUMP COMPONENT COOLING SYSTEM CORRECTIVE ACTION Pump worn beyond service limits.
Rebuilt punip.
OUTAGE OUTAGE DURATION DATES (HOURS) 11-13-77 7.00
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- COMPONENT MOV-SW-203, A,B,C,D.
2-SW-P-lOA 2-SW-P-lOB 2-SW-113 SURRY POWER STATION UNIT f/2 ECCS OUTAGE REPORT SERVICE WATER SYSTEM CAUSE OF OUTAGE Drain valves inadvertently left open flooded to the valve pit.
Valve stem corroded allowing disc to drop and obstruct service water flow to the intermediate seal cooler.
Motor bearings failed.
Eel found in impeller.
Material entrained in water was deposited on pump impeller causing loss of discharge ressure.
Trash in pump caused a loss of flow.
Trash on strainer caused a reduction in discharge ressure.
The valve disc was found to be missing from the check valve for 2-SW-P-lOA.
CORRECTIVE ACTION Drained pit and dried Replaced valve stem.
Replaced motor.
Removed eel.
Cleaned pump Cleaned pump.
Cleaned strainer.
Replaced check valve.
11 OUTAGE OUTAGE DURATION DATES (HOURS) motors.
10-11-77 21.50 03-05-78 1.33
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J 04-10-78 3.00 -*
10-12-80 22.42 11-14-80 6.63 09-24-80 12.00 11-05-80 0.62 09-26-80 6.40
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