Text

Forwards Responses to NUREG-0737 Item II.K.3.17,completing ECCS Outage Info
	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)
	v • d • e

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VJRPINIA ELECTRIC AND POWER COMPANY RICHMOND,VIRGl:NXA 23261 February 27, 1981 Mr. Harold R. Denton, Director Serial No. 140 Office of Nuclear Reactor Regulation NO/WRM:ms Attn: Mr. Darrell G. Eisenhut, Director Docket Nos. 50-280 Division of Licensing 50-281 U. S. Nuclear Regulatory Commission License Nos. DPR-32 Washington, D. C. 20555 DPR-37 Gentlemen:

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.

Very truly yours,

t!.fe!o B. R. Sylvia Manager - Nuclear Operations and Maintenance Enclosure

Sill 0904 C -;:f~

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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 MAINT. HOURS TESTING HOURS Emergency Power System III EDG 115.5 156.0 1/3 EDG 1.0 99.0 Safety Injection System 74.5 1.5 Recirculation Spray System 0.25 157.5 Charging Pump Component Cooling 48.2 Service Water System 14.6 UNIT 2 MAINT. HOURS TESTING HOURS Emergency Power System 112 EDG 0.0 126.0 1/3 EDG 1.0 81.0 Safety Injection System 51. 7 6.5 Recirculation Spray System 126.5 Charging Pump Component Cooling 7.0 Service Water System 73.9

The equipment identified as ECCS equipment and the average outage duration times per month are as follows for each unit.

HOURS Emergency Power System Unit 1 4.5 (f/:1 EDG)

1. 7 (f/:3 EDG)

Unit 2 2 .1 (f/:1 EDG) 1.4 (1/:3 EDG)

Safety Injection System Unit 1 1.3 Unit 2 1.0 Recirculation Spray System Unit 1 3.0 Unit 2 2 .1 Charging Pump Component Unit 1 0.8 Cooling Unit 2 0 .1 Service Water System Unit 1 0.2 Unit 2 1.2

SURRY POWER STATION UNIT Ill ECCS OUTAGE REPORT EMERGENCY POWER SYSTEM 11 OUTAGE OUTAGE DURATION COMPONENT CAUSE OF OUTAGE CORRECTIVE ACTION DATES (HOURS)

Ill Emergency Crack in cylinder 1117 allowed Replaced all damaged parts. 04-16-76 77 .00 Diesel Generator water to enter causing extensive damage when diesel started.

Crack in cylinder head #1 allowed Replaced cylinder head 05-08-76 10.50 water to enter cylinder.

Cylinder head #19 cracked.

1/:l, 2, and 16.

Replaced cylinder head

1, 2 and 16.

07-02-76 13.80 e Cylinder head 117 cracked. Replaced cylinder head. 07-23-76 11.92 Base tank switch sticking Repaired switch. 09-02-80 2.25 preventing fuel flow from day tank.

Periodic Test 22.3A Completed Test. 01-05-76 3.00 Periodic Test 22.3A Completed Test. 01-30-76 3.00 Periodic Test 22.3A Completed Test. 03-02-76 3.00 Periodic Test 22.3A Completed Test. 04-04-76 3.00 Periodic Test 22.3A Completed Test. 05-06-76 3.00 Periodic Test 22.3A Completed Test. 05-14-76 3.00 Periodic Test 22.3A Completed Test. 06-02-76 3.00 Periodic Test 22.3A Completed Test. 07-03-76 3.00 Periodic Test 22.3A Completed Test. 07-13-76 3.00 Periodic Test 22.3A Completed Test. 07-21-76 3.00 Periodic Test 22.3A Completed Test. 08-02-76 3.00 -

Periodic Test 22.3A Completed Test. 08-10-76 3.00 Periodic Test 22.3A Completed Test. 08-24-76 3.00 Periodic Test 22.3A Completed Test. 09-01-76 3.00 Periodic Test 22.3A Completed Test. 10-01-76 3.00 Periodic Test 22.3A Completed Test. 10-11-76 3.00 Periodic Test 22.3A Completed Test. 02-02-77 3.00 Periodic Test 22.3A Completed Test. 02-02-77 3.00 Periodic Test 22.3A Completed Test. 03-02-77 3.00 Periodic Test 22.3A Completed Test. 03-02-77 3.00 Periodic Test 22.3A Completed Test. 06-02-77 3.00 Periodic Test 22.3A Completed Test. 07-02-77 3.00 Periodic Test 22.3A Completed Test. 08-02-77 3.00 Periodic Test 22.3A Com:eleted Test. 09-02-77 3.00 I

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 Periodic Test 22.3C Completed Test. 08-10-76 3.00 \

Periodic Test 22.3C Periodic Test 22.3C Completed Test.

Completed Test.

09-01-76 10-11-76 3.00 3.00 e

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 NOTE:

Periodic Test 22.3C Periodic Test 22.3C Completed Test.

Completed Test.

The following Periodic Tests were accomplished using Unit 2 Period.ic Test.

07-25-80 09-07-80 3.00 3.00 However, only Unit 1 was operating e

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 L_

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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 Periodic Test 22.3A Periodic Test 22.3A Completed Test.

Completed Test.

03-02-78 04-03-78 3.00 3.00 e

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 Periodic Test 22.3A Completed Test. 06-10-80 3.00 9 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

SURRY POWER STATION UNIT fll ECCS OUTAGE REPORT SAFETY INJECTION SYSTEM OUTAGE OUTAGE DURATION COMPONENT CAUSE OF OUTAGE CORRECTIVE ACTION DATES (HOURS)

Boron Injection Tank Recirculation of BIT stopped Replaced valve l-CH-85. 03-26-76 0.20 to allow repair of l-CH-85.

Recirculation of BIT stopped Repaired valve l-CH-125. 08-23-76 0.58 to allow repair of l-CH-125.

Recirculation of BIT stopped to The flange was installed 09-17-76 0.13 allow installation and subsequent removal of a blind flange on line l"-CH-56-152.

to clear a suspected Boric Acid Plug - no obstruction was found.

e BIT boron concentration less than Corrected valve line-up, 11-29-78 2.00 T.S. due to erroneous valve line-up. Retire. BIT with "B" Boric Acid Storage Tank.

Recirculation of BIT stopped to Replaced diaphragms. 01-26-77 0.23 allow repair of valves l-CH-83 and l-CH-95.

Recirculation of BIT stopped to Replaced diaphragm. 02-20-77 0.33 allow repair of valve l-CH-98.

Recirculation of BIT stopped to Replaced diaphragm. 04-07-78 0.05 allow repairs to l-CH-98.

l-CH-P-2A Pump shaft broken. Replaced pump shaft. 01-23-80 13.00 1-SI-TK-lA Moisture in air line to HCV- Cleared air line and 02-06-80 0.42 1852A caused a delay in closing refilled accumulator of the valve allowing the "A" 1-SI-TK-lB accumulator level to decrease below T.S. levels.

Check valves l-SI-128 and l-SI- Initiated recirculation of 07-02-76 1.33 e

130 leaking by causing dilution "B" accumulator with RWST of "B" accumulator. to increase boron concentration.

1-SI-TK-lC When attempting to pressurize Repaired HCV-1549 and HCV-1936. 09-09"-76 4.55 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.

CLS Jumper used to defeat CLS not Removed jumper. 07-21-76 3.50 removed after refueling.

SURRY POWER STATION UNIT 111 ECCS OUTAGE REPORT SAFETY INJECTION SYSTEM OUTAGE OUTAGE DURATION COMPONENT CAUSE OF OUTAGE CORRECTIVE ACTION DATES (HOURS)

RWST Volume of tank specified by A.E. Calculated correct level 08-19-80 different than that assumed in and filled RWST to greater the order for modification of than this level.

license dated 06-29-78.

Periodic Test 18.7 Completed Test. 02-05-80 0.50 -

Periodic Test 18.7 Completed Test. 08-11-80 0.50 Periodic Test 18.7 ComEleted Test. 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 04-08-76 4.50 \

17.3 Completed Test. \

Periodic Test Periodic Test Periodic Test 17.3 17.3 17.3 Completed Test.

Completed Test.

06-02-76 07-03-76 08-04-76 4.50 4.50 4.50 e

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 Periodic Test Periodic Test 17.3 17.3 17.3 Completed Test.

Completed Test.

04-16-78 07-15-78 10-16-78 4.50 4.50 4.50 e

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

SURRY POWER STATION UNIT #1 ECCS OUTAGE REPORT COMPONENT COOLING SYSTEM OUTAGE OUTAGE DURATION COMPONENT CAUSE OF OUTAGE CORRECTIVE ACTION DATES (HOURS) l-CC-P-2A Motor bearing failed. Replaced bearings. 02-08-77 28.00 l-CC-P-2B Pump bearing failed. Replaced bearings. 10-09-78 20.17

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SURRY POWER STATION UNIT Ill ECCS OUTAGE REPORT SERVICE WATER SYSTEM OUTAGE OUTAGE DURATION COMPONENT CAUSE OF OUTAGE CORRECTIVE ACTION DATES (HOURS) 1-SW-132 Stem corroded causing valve disc Replaced valve stem. 03-05-78 0. 75 to drop and stop flow from Charging Pump intermediate Seal Cooler 1-SW-l-SW-110 E-IB.

Stem corroded causing valve disc to drop and stop flow to Charging Replaced valve stem. 12-04-78 0.83 e \

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Pump Intermediate Seal Cooler 1-SW-E-IB.

1-SW-107 Stem corroded allowing valve disc Replaced valve. 11-27-79 12.50 to drop and stop flow to 1-SW-P-lOA Charging Pump Service Water Pum.

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 Periodic Test Test 22.3B 22.3B Completed Completed Test.

Test.

06-03-76 07-21-76 3.00 3.00 e

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 Periodic Periodic Test Test Test 22.3B 22.3B 22.3B Completed Completed Completed Test.

Test.

03-04-78 05-04-78 05-11-78 3.00 3.00 3.00 e

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

SURRY POWER STATION UNIT #2 ECCS OUTAGE REPORT EMERGENCY POWER SYSTEM OUTAGE OUTAGE DURATION COMPONENT CAUSE OF OUTAGE CORRECTIVE ACTION DATES (HOURS) 112 Emergency Periodic Test 22.3B Completed Test. 08-07-80 3.00 Diesel Generator Periodic Test 22.3B Completed Test. 09-04-80 3.00 Periodic Test 22.3B Completed Test. 11-05-80 3.00 Periodic Test 22.3B Completed Test. 11-15-80 3.00 Periodic Test 22.3B Completed Test. 11-16-80 3.00 Periodic Test 22.3B Completed Test. 11-25-80 3.00-Periodic Test 22.3B Completed Test. 12-01-80 3.00 Periodic Test 22.3B Completed Test. 12-09-80 3.00

3 Emergency Periodic Test 22.3C Completed Test. 02-03-76 3.00 Diesel Generator Periodic Test 22.3C Completed Test. 04-05-76 3.00 Periodic Test 22.3C Completed Test. 06-04-76 3.00 Periodic Test 22.3C Completed Test. 08-03-76 3.00 Periodic Test 22.3C Completed Test. 02-03-77 3.00 Periodic Test 22.3C Complete~ Test. 06-03-77 3.00 Periodic Test 22.3C Completed Test. 08-03-77 3.00 Periodic Test 22.3C Completed Test. 10-02-77 3.00 Periodic Test 22.3C Completed Test. 12-03-77 3.00 Periodic Test 22.3C Completed Test. 02-01-78 3.00 Periodic Test 22.3C Completed Test. 06-05-78 3.00 Periodic Test 22.3C Completed Test. 08-06-78 3.00 Periodic Test 22.3C Completed Test. 11-03-78 3.00 Periodic Test 22.3C Completed Test. 12-06-78 3.00 Periodic Test 22.3C Completed Test. 01-16-79 3.ooe Periodic Test 22.3C Completed Test. 01-17-79 3.00 Periodic Test 22.3C Complete4 Test. 10-06-80 3.00 Periodic Test 22.3C Completed Test. 11-24-80 3.00 Periodic Test 22.3C Completed Test. 12-06-80 3.00 NOTE: The following Periodic Tests were accomplished using Unit 1 Periodic Test. However, only Unit 2.was operating

/13 Emergency Periodic Test 22.3C Completed' Test. 01-03-77 3.00 Diesel Generator Periodic Test 22.3C Completed Test. 05-03-77 3.00 Periodic Test 22.3C Completed Test. 05-06-78 3.00 Periodic Test 22.3C Completed Test. 06-06-78 3.00 Periodic Test 22.3C Completed Test. 09-07-78 3.00 Periodic Test 22.3C Completed Test. 08-07-80 3.00 Periodic Test 22.3C Completed Test. 09-07-80 3.00 Periodic Test 22.3C Completed Test. 11-05-80 3.00

SURRY POWER STATION UNIT 112 ECCS OUTAGE REPORT SAFETY INJECTION SYSTEM OUTAGE OUTAGE DURATION COMPONENT CAUSE OF OUTAGE CORRECTIVE ACTION DATES (HOURS)

Boron Injection Tank Leakage through MOV-2867C and D Initiated recirculation of 11-09-77 0.67 caused a dilution of the BIT. BIT with "B" Boric Acid Storage Tank to increase boron concentration.

The Contents of the Batch Tank Dilute to the required 08-22-80 were transferred to the "C" Boric concentration.

Acid Storage Tank and the BIT causing the boric acid concentra-tion to rise above T.S. limits.

Improper valve lineup caused a Increased boric acid 11-05-80 0.96 dilution of BIT and "C" BAST. concentration.

Leakage through MOV-2876A and/or Closed valves manually and 12-30-76 3.50 MOV-2867B diluting BIT to less recirculated BIT with "C" T. S. low limit. Boric Acid Storage Tank to increase concentration.

An obstruction stopped recir- Established recirculation 01 77 1. 75 culation of the BIT. with "B" Boric Acid Storage Tank.

Dilution of BIT because of a Recirculate BIT with "B" 08-15-77 1.20 cracked diaphragm on 1-CH-144. Boric Acid Storage Tank and replaced diaphragm on valve .1-CH-144.

Leakage through MOV-2867C and Closed valves manually and 10-31-77 0.57 D diluting the BIT. increased boric acid con-centration of BIT.

2-SI-TK-lB When attempting to pressurize the Repaired Leaking N fittings 08-26-80 1.58 2

accumulator, the low N header and repressurized.

pressure caused a furtffer reduc-tion of accumulator pressure.

Contents of the boric acid bottoms Dilute to required concen- 08-15-80 0.81 tank were transferred to the "C" trations.

Boric Acid Storage Tank & thence the BIT causing the boric acid concen-tration to rise above T.S. limits.

SURRY POWER STATION UNIT #2 ECCS OUTAGE REPORT SAFETY INJECTION SYSTEM OUTAGE OUTAGE DURATION COMPONENT CAUSE OF OUTAGE CORRECTIVE ACTION DATES (HOURS) 2-SI-TK-IB. The accumulator was filled to a Repaired instrumentation 08-16-80 4.03 level greater than allowed by T.S. and drained accumulator.

Check valve 2-SI-127 leaking Isolated valve and recir- 11-08-77 3.92 \

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through allowing dilution of culated accumulator with \

2-SI-TK-lC "B" accumulator.

Check valves 2-SI-147 and 2-SI-145 leaking allowing RWST.

Initiated recirculation of accumulator with RWST to 08-13-76 2.75 e dilution of "C" accumulator. increase boron concentration.

2-SI-P-lA Rain water from a leaking roof Repaired roof hatch and 11-05-80 4.83 hatch grounded out the motor dried motor connections.

connection box.

MOV-2862B Valve binding caused motor Adjusted valve and reset 06-15-76 21.92 overloads to function. overloads.

4"-CH-389 Pipe support for alternate Modified to conform to 10-15-80 2.12 charging header not installed drawings.

as desi ned.

Periodic Test 18.7 Completed Test. 08-09-80 0.50 Periodic Test 18. 7 Completed Test. 09-05-80

0.50 Periodic Test 18. 7 Completed Test. 09-07-80 0.50 Periodic Test 18. 7 Completed Test. 09-15-80 0.50 Periodic Test 18. 7 Completed Test. 10-07-80 0.50 Periodic Test 18.7 Periodic Test 18.7 Completed Completed Test.

Test.

11-07-80 11-19-80 0.50 0.50 e Periodic Test 18.7 Completed Test. 11-21-80 0.50 Periodic Test 18.7 Completed Test. 12-07-80 0.50 Periodic Test 18.7 Completed Test. 12-12-80 0.50 Periodic Test 18.7 Completed Test. 12-13-80 0.50 Periodic Test 18.7 Completed Test. 12-13-80 0.50

_Periodic Test 18. 7 Completed Test. 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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Periodic Periodic Periodic Test Test Test 17.3 17.3 17.3 Completed Completed Completed Test.

Test.

08-25-76 12-30-76 01-24-77 4.50 4.50 4.50 e

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 Periodic Periodic Test Test Test 17.3 17.3 17.3 Completed Completed Completed Test.

Test.

01-24-79 08-23-80 09-10-80 4.50 4.50 4.50 e

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

SURRY POWER STATION UNIT #2 ECCS OUTAGE REPORT CHARGING PUMP COMPONENT COOLING SYSTEM OUTAGE OUTAGE DURATION COMPONENT CAUSE OF OUTAGE CORRECTIVE ACTION DATES (HOURS) 2-CC-P-2B Pump worn beyond service limits. Rebuilt punip. 11-13-77 7.00

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SURRY POWER STATION UNIT f/2 ECCS OUTAGE REPORT SERVICE WATER SYSTEM 11 OUTAGE ....

OUTAGE DURATION COMPONENT CAUSE OF OUTAGE CORRECTIVE ACTION DATES (HOURS)

MOV-SW-203, Drain valves inadvertently left Drained pit and dried motors. 10-11-77 21.50 A,B,C,D. open flooded to the valve pit.

Valve stem corroded allowing Replaced valve stem. 03-05-78 1.33 disc to drop and obstruct '\

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service water flow to the J intermediate seal cooler.

2-SW-P-lOA Motor bearings failed. Replaced motor. 04-10-78 3.00 Eel found in impeller. Removed eel. 10-12-80 22.42 Material entrained in water Cleaned pump 11-14-80 6.63 was deposited on pump impeller causing loss of discharge ressure.

2-SW-P-lOB Trash in pump caused a loss Cleaned pump. 09-24-80 12.00 of flow.

Trash on strainer caused a Cleaned strainer. 11-05-80 0.62 reduction in discharge ressure.

2-SW-113 The valve disc was found to Replaced check valve. 09-26-80 6.40 be missing from the check valve for 2-SW-P-lOA.

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ML18139B113

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