Text

Reactor Containment Bldg Integrated Leakage Rate Test Types A,B & C Periodic Test,Sept 1984
	ML20106E246
Person / Time
Site:	North Anna
Issue date:	09/30/1984
From:	; STONE & WEBSTER ENGINEERING CORP.
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ML20106E191	List: ML20106E188; ML20106E230; ML20106E246;
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REACTOR CONTAINMENT BUILDING INTEGRATED LEAKAGE RATE TEST TYPES A, B, AND C PERIODIC TEST VIRGINIA ELECTRIC AND POWER COMPANY NORTH ANNA POWER STATION UNIT NO. 1 SEPTEMBER 1984 O

i Prepared by STONE & WEBSTER ENGINEERING CORPORATION BOSTON, MASS 1

B1-1426028-5025 mer8%

TABLE OF CONTENTS Section Title Py REFERENCES iii LIST OF ATTACHMENTS iv PURPOSE 1-1 1

2

SUMMARY

2-1 2.1 TYPE A TEST 2-1 2.1.1 August 1984 CILRT 2-2 2.1.2 September 1984 CILRT 2-3 2.1.3 Conclusion 2-3 2.2 LOCAL LEAK RATE TESTS (TYPES B AND C) 2-4 3 TYPE A TEST 3.1-1 3.1 EDITED LOG OF EVENTS 3.1-1 3.1.1 August 1984 Edited Log 3.1-1 3.1.2 September 1984 Edited Log 3.1-3 3.2 GENERAL TEST DESCRIPTION 3.2-1 3.2.1 Initial Conditions 3.2-1 3.2.2 Equipment and Instrumentation 3.2-1 3.2.3 Data Acquisition System 3.2-2 3.2.4 Data Resolution System 3.2-2 3.3 TEST RESULTS 3.3-1 3.3.1 Presentation of Test Results 3.3-1 3.3.2 CILRT Results 3.3-1 4 LOCAL LEAKAGE RATE TESTS (TYPES B AND C) 4-1 O

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i REFERENCES

1. 10CFR50, Appendix J, Primary Reactor Containment Leakage Testing for Water-Cooled Power Reactors, October 22, 1980.

2. 1-PT-61.1, Reactor Containment Building Integrated Leakage Rate Testing, 1984.

3. ANSI N45.4, American National Standard Leakage-Rate Testing of Containment Structures for Nuclear Reactors, March 16, 1982.

4. VEPCO, North Anna LER 84-008, Recirculation Spray Cooler Lap Ring Cracking, dated September 27, 1984.

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LIST OF ATTACHMENTS Attachment Title 2.1A Recirculation Spray Cooler Lap Ring Arrangement 3.2A Instrumentation List 3.2B Instrumentation Location - Profile View 3.2C Instrumentation Location - Plan View 3.3A CILRT - Input Variables 3.3B CILRT - Absolute Test Method, Pass Point Analysis 3.3C Superimposed Leakage Rate Test - Input Variables 3.3D Superimposed Leakage Rate Test - Mass Point Analysis 3.3E Graph - Mass versus Time 1800 Hours 9/9/84 to 2340 Hours 9/10/84 3.3F Graph - UCL and Leakage Rate versus Time O 4A 1800 Hours 9/9/84 to 1800 Hours 9/10/84 1984 Local Leakage Rate Test Data 4B 1983 Local Leakage Rate Test Data 40 1982 Local Leakage Rate Test Data 4D 1981 Local Leakage Rate Test Data T

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SECTION 1 Nj PURPOSE The purpose of this report is to present a description and analysis of the August / September 1984 Periodic Type A Containment Integrated Leakage Rate Test (CILRT), and a susuma ry of the periodic Type B and C test conducted since March 1981 on the Virginia Electric and Power Company's North Anna Power Station, Unit No. 1.

This report discusses both the August and the September CILRT. The containment was depressurized in August due to the suspected leak in the service water piping to the Recirculation Spray System and because the loss of trending capability caused by the tripped air recirculation fan.

Remaining outage work and the subsequent repairs performed on the recirculation spray coolers delayed the second CILRT until September 1984.

Stone & Webster Engineering Corporation provided engineering consultation services to Vepco during their performance of these tests.

This report is submitted as required by 10CFR50, Appendix J, Paragraph V.B.

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SECTION 2

SUMMARY

2.1 TYPE A TEST 2.1.1 August 1984 CILRT

< Pressurization for the August CILRT was started at 1428 hours0.0165 days 0.397 hours 0.00236 weeks 5.43354e-4 months and was completed at 2357 hours0.0273 days 0.655 hours 0.0039 weeks 8.968385e-4 months on August.4, 1984. The "B" containment air recirculation fan tripped at 2219 hours0.0257 days 0.616 hours 0.00367 weeks 8.443295e-4 months .

During the first hours of temperature stabilization, an unusually high temperature difference within Zone E was observed. This was attributed to RTD TE-LM-100-4. This point was deleted from the CILRT program. This action extended the temperature stabilization period as the weighted average temperature was offset due to the deletion of the RTD.

Temperature stabilization was achieved at 0600 on August 5, 1984.

Leakage investigation teams discovered two significant leakage paths.

The first, discovered at 1640 hours0.019 days 0.456 hours 0.00271 weeks 6.2402e-4 months was on the Containment sump pump discharge line, Penetration 38. The second, discovered at 1720 hours0.0199 days 0.478 hours 0.00284 weeks 6.5446e-4 months , was on the Containment Vacuum System, Penetration 93. Both penetrations were vented for the Type A test. The vents were closed in an attempt to quantify the effect of these leaks using the change in the mass trend.

From 0600 hours0.00694 days 0.167 hours 9.920635e-4 weeks 2.283e-4 months to 1800 hours0.0208 days 0.5 hours 0.00298 weeks 6.849e-4 months on August 5,1984, the average mass lost was approximately 33 lba/ hour.

From 1900 hours0.022 days 0.528 hours 0.00314 weeks 7.2295e-4 months on August 5,1984, to 0600 hours0.00694 days 0.167 hours 9.920635e-4 weeks 2.283e-4 months on August 6,1984, the average mass lost was approximately 16 lbe/ hour. The Type A acceptance criteria of 0.75 La is approximately equivalent to 16 lbs/ hour.

There were three other leakage paths noted during the August CILRT. The

~first was the Personnel Airlock. The personnel airlock was tested on

-August 31, 1984, and the probable leakage path was determined .to be the valve packing on the' inside personnel door equalizing valve. The measured leakage was 11.4 scfh. Although the airlock leakage contributed to the Type A ' leakage, it was not a significant Type A leakage - path.

The second leakage path was a manual valve on the leakage monitoring system. This valve isolates the dry air pressurized bottle used to leakage test the leakage monitoring system. This manual valve is in the nonsafety related portion of the LM system and would generally not see Type A pressure due to closure of redundant containment isolation valves.

Since the Type A pressure instrumentation was installed 'on the same nonsafety portion of the LM system, the manual valve did see Type _ A pressure. No appreciable improvement was observed in the. mass trend before or after the manual valve was closed. In fact, the mass trend worsened. The LM manual valve leakage contributed to the Type A leakage,-

although it was not a significant leakage path.

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The third leakage path was the Recirculation Spray Heat Exchanger m (RSHXs). There are four RSHXs, all located inside containment. Service water provides the cooling water to the RSHXs. On August 7, 1984, during a review of the valve lineup, it was determined that the service water penetrations to the RSHXs were not flooded. Upon flooding the service water piping, a sustained mass increase was observed. The service water supply header pressure was monitored and found to be well in excess of the Type A test pressure, (e.g., inleakage). The header pressure was bled down, and the mass rate again decreased. Attempts to isolate the RSHX leakage by establishing a controlled water block on the supply header, and a maintained air pressure on the return header were thwarted by loss of the "A" containment recirculation fan motor at 1040 hours0.012 days 0.289 hours 0.00172 weeks 3.9572e-4 months on August 8, 1984 (motor feed by H bus which was lost during a diesel test).

The loss of the fan affected containment air temperature trending. The containment was depressurized to inspect the RSHXs.

After.a series of tests, it was determined that the probable air leakage path was through cracks in the RSHX lap ring (Attachment 2.1A). As reported by VEPCO (Reference 4), these cracks were caused by a Crevice Corrosion and Stress Corrosion Cracking condition. The repairs to the RSHX were completed prior to the September 1984 CILRT. VEPCO is currently evaluating potential modifications for the recirculation spray coolers to add'ress this condition.

The RSHX leakage was determined to be a significant Type A leakage path.

Conservative estimates of leakage through this path can be obtained by comparing the improvement in average mass lost from the September 1984 CILRT (7.5 lba/ hour) to the 11 hour1.273148e-4 days 0.00306 hours 1.818783e-5 weeks 4.1855e-6 months period immediately following the the

' isolation of Penetrations 38 and 93 (16 lbm/ hour) during the August

'q, CILRT. The difference of 8.5 lba/ hour is equivalent to 0.4 La or 113 scfh.

The following summarizes the significant Type A leakage paths-identified by the August 1984 CILRT:

Path Leakage (sefh)

Penetration 38 53 (measurement)

Penetration 93 252 (measurement)

RSHX .113 (estimate)

The leakages for the penetrations were determined by obtaining the. Type C

, leakages for individual valves, then by taking the lowest of the two (both penetrations have one valve inside,- one valve outside). This minimum pathway leakage simulates the leakage prior to the isolation of the penetrations. .The resulting leakage from these three paths is roughly 1.5 La or twice the maximum allowable Type A leakage.

2.1.2 September 1984 CILRT Remaining outage items, ' maintenance work on problems discovered during

- the August CILRT, and the repairs on the Recirculation Spray Cooler were

. performed prior to the September CILRT.

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h In an attempt to increase average containment temperature during the September 1984 CILRT, the chilled water flow to the containment air !

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recirculation fans were throttled using a manual valve on the supply

?~; header. The higher containment air temperature was desired partly to resolve the temperature Zone E. discrepancy (TE-LM-100-4 had been verified e" to be functioning properly) and to stay within the new temperature range

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r. of the RTD bridges (see Attachment 3.2A).

4 Leakage investigation teams discovered one significant leakage path during the September 1984 CILRT. Due to the decreased chilled water flow to the air recirculation fans, the containment air pressure was now much l

' higher than the chilled water pressure. This resulted in overleakage through the "A" recirculation fan cooler unit piping. A downstream leakage test was performed on the "A" cooler with the contain-ment i pressurized. The measured leakage vas 70 scfh. Following the September 1984 CILRT, the source of the "A" cooler unit piping leaking was- identified as the flanges on TV-CC-105A. This leakage had not been picked up by the Type C test performed prior to the August CILRT. This leakage was not noticed during the August CILRT due to the higher flow

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rates, and thus the lower differential pressure across. the isolation

- valves.

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At 1800 hours0.0208 days 0.5 hours 0.00298 weeks 6.849e-4 months on September 9, 1984, the CILRT was started and was i successfully completed at 1800 hours0.0208 days 0.5 hours 0.00298 weeks 6.849e-4 months on September 10, 1984. The super-Oimposed leakage" te'st was started at 1940 hours0.0225 days 0.539 hours 0.00321 weeks 7.3817e-4 months and was completed at 2340 hours0.0271 days 0.65 hours 0.00387 weeks 8.9037e-4 months on September 10, 1984. ,

p .Depeessuri tior.sof the containment began'at*0101 hours and was completed at.1350' hours on, September 11. 1984. " ,.

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2.1.3 Conclusion ,

With the exception of the RSHX leakage path which has been repaired, the other leakage paths found during the August andJeptmher CILRTs are possibly the result of (nadequate Type C test methods. -lhe' use 'of the

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h downstream method with'out;a leakage check of the test boundaries is not always la conservative test method. VEPCO has begun an engineering i evaluation of their Type C test program to determine what changes can be

<N made to prevent similar occurrences. It is anticipated that this review s

will be completed by March 31, 1985, based on their current work schedule forecasts.

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2.2 LOCAL LEAKAGE RATE TESTS (TYPES B AND C) i The Local Leakage Rate Tests (LLRTs) of containment isolation valves and primary containment penetrations were conducted as required by station surveillance procedures since the last Unit No. 1 Type A test performed in March 1981.

1 i In accordance with Appendix J,10CFR50, Par.ngraph V.B. data for the LLRTs are summarized in Section 4 of this report. ,

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. - - . . . _ ~ . . . _ . - - - - - . . - _ _ . - - _ - . _ . _ - . _ _ _ . . _ . , _ _ _ _ _ . _ , _ _ _ . _ . . _ . . _ . - _ _ . - - - _ . _ . . . - - _ - --

w NOTE g RADIAL FLAWS WERE FOUND IN THE OUTER v S/8" REGION OF THE I" THICK LAP RING. THE TYPE A LEAKAGE PATH WAS THROUGH THESE CRACKS AND THROUGH THE "O" COOLER DIAPHRAGM SURFACE FLAW. CRACKS WERE ON ALL THE COOLERS BUT MORE SEVERE ON "D" COOLER.

BOTTOM COVERg i 8 i l I,I I I I I y ([ CRACK (TYP.)

(SEE NOTE)

DIAPHRAGM =

LAP RING f q 11 l,l g l n

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TUBE SHEET l

g SEE ABOVE FOR

' ) INVERTED DETAIL i ii

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COOLER LOCATED INSIDE CONTAINMENT, INSTALLED IN VERTICAL POSITION SERVICE WATER TUBE SIDE REClRCULATION SPRAY SHELL SIDE ATTACHMENT 2.1 A RECIRCULATION SPRAY COOLER C LAP RING ARRANGEMENT NORTH ANNA POWER STATION-UNIT No.1

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SEPTEMBER 1984, ClLRT

SECTION 3 TYPE A TEST :

I 3.1 EDITED LOG OF EVENTS This log was edited from the Official Log of Events. i 3.1.1 August 1984 CILRT Edited Log of Events August 4, 1984 1132 - Completed containment inspection. Reference 1-PT-61.1A for list of discrepancies.

1428 - Commenced pressurization. Initial pressure was 14.6 psia.

2219 - Air recirculation fan IB tripped. Fans 1A and 1C are still running.

2357 - Secured pressurization.

August 5, 1984 0328 - Removed RTD (TE-LM100-4) from CILRT program on both Units No. I and 2 plant computers. This delayed temperature stabilization.

0600 - Satisfied temperature stablilzation.

1040 - Conducting preliminary leakage investigation on instrument air line. It was determined not to be significant.

1430 - Inspected purge lines using ultrasonic leak detector. No leakage observed.

1640 - Detected leakage through open (vented) test connection on Penetration 38.

1720 - Detected leakage through open (vented) test connection on Penetration 93.

1801 - Leakage on Penetration 93 determined -to be in excess of 35 scfh.

1810 - The test connection on Penetration 93 was closed to isolate this leakage path.

1825 - Leakage _on Penetration 38 determined to .be approximately 65 percent of scale on NQC-4125. -The test connection on-penetration was closed to isolate this leakage path.

2322 - Personnel airlock pressure at 33.7 psig.

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Auaust 6, 1984 1211 - Personnel airlock pressure at 36.8 psig.

1535 - Personnel airlock pressurized to 42 psig to shorten the time to equalization.

1935 - Found leakage on LM test connection to the dry air cylinder.

Valve tightened and leakage stopped. Inspected other valves and test connections. No significant leakage observed.

August 7, 1984

! 0030 - Closed test connection on penetration 38 was still leaking.

Recapped 1-DA-07.

0444 - Recapped 1-DA-07. Installed a rubber stopper inside the cap to-reduce leakage.

1010 - Investigated recirculation spray heat exchanger (RSHXs) lineup.

The procedure called for these lines to be flooded.

1101 - Temporary pressure gages installed on service water side of RSHXs indicate 42 psig.

4 1300 - Flooded the -service water piping on all four heat exchangers.

) 1735 - Installed pressure gages on service water supply header to the V RSHXs. Readings were:

A - 86.8 psig B - 86.8 psig C - 87.5 psig D - 82.0 psig ,.

1958 - Due to increasing mass trend, bled the pressure on the service water supply header to 42 psig (less .than containment pressure). Completed last at 2135.

August 8, 1984 0430 - -Began preparations to pressurize service water return header to slightly less than containment pressure.

0545 - Service water return header pressure at 43.5 psig supply header at 60 psig.

1034 - Bled supply ' header pressure. Supply header - pressure at 42 psig. Return header pressure at.43 psig.

1040'- Lost H Bus.. This feeds the "A" Recirculation Fan motor.

s Component cooling water temperatures. dropped approximately four-

' degrees. These events 1affected temperature stabilization.

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2058 - Started depressurization of containment.

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,m August 9, 1984 1512 Containment at 14.774 psia.

1611 Conducted containment inspection. Noted water on bottom flange of the "D" RSHX.

2045 Chemistry analyzed water samples taken during containment walkdown.

August 10, 1984 0230 "As-found" Type C results for Penetration 38 are as follows:

TV-DA-100A 52.7 scfh TV-DA-100B >257 scfh 1038 - Chemistry samples taken from "B" and "C" RSHX did not indicate significant presence of service water. Sample taken from "D" not sufficient for test.

1400 - Decision made to release Unit I containment so that remaining work can be completed. Type A to be performed after this work completed.

/) August 14, 1984 G

RSHX service water side was pressurized with air and doped with helium. Sniffed the recirculation spray side. No leakage detected.

August 18, 1984 0900 - Removed the bottom cover on the "D" RSHX. This was done to inspect the diaphram. A leakage path was suspected due to the change in the mass trend during service water header isolation attempts on August 7 and 8, 1984. A small crack was observed (water leaking through) on the diaphram.

Note: All four bottom diaphrams were replaced.

3.1.2 September 1984 CILRT Edited Log of Events September 7, 1984 0739 - Commenced containment pressurization.

0910 - Returned RTD (TE-LM100-4) to the CILRT Program.

1510 - "B" Containment Air Recirculation Fan Motor tripped.

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.J 1625 - Secured pressurization at 59.584 psia.

1905 - Investigated leakage by MOV-HV-100B.

2158 - Temperature stabilization satisfied.

2159 - Determined that suspected leakage through MOV-HV-100B was fan noise (Purge and Exhaust fans were running).

September 8, 1984 0235 - Temporary pressure gauge on personnel airlock was removed as the fittings were leaking. Lineup was returned to normal.

1300 - Isolated Outside Recirculation spray pumps by closing MOV-RS-ISSA and B. This was to determine if leakage was from the Recirculation Spray System.

1500 - The pressure of the "B" outside Recirculation Spray Loop decreased.

September 9, 1984 0510 - Hechanical chiller tripped. The chiller cools the water circulating through the containment air recirculation fan coolers.

O 0528 - Chilled water pumps were airbound. Air is being vented off.

V header 0705 - Installed pressure gages on each chilled water (Penetrations 9, 10, and 11) 0743'- Penetration 11 pressure gage - was increasing. This indicated that the "A" cooler system was leaking.

1039 - Performed leak-through test by placing rotometer on 1-CC-545.

Leakage measured was 70 scfh.

F 1123 - Makeup test leakage test done on "B" Outside Recirculation Spray Pump Loop. Leakage measured was 6.8 scfh.

1135 - Makeup test was done on "A" Outside Recirculation Spray Pump Loop. Leakage measured was 4.2 scfh.

1140 - Opened both suction valves HOV-RS-ISSA and B to restore the original valve lineup for the Outside Recirculation Spray Systems.

1370 - Determined that the Type A test could not be completed without the chilled water system running.

1430 -

Established flow of approximately 500 gym through "B" and "C" coolers.

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< b '1438 - Chilled water flow stopped since there is air -in the lines.

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1506 - Reestablished flow on the "B" and "C" coolers.

1529 - Started mechanical chiller.

4 1800 - Determined that containment temperature was stable enough to

start the ILRT.

September 10, 1984 1800 - Completed 24 hour2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months run with final UCL of 0.029558%/ day.

1831 - Started superimposed flow.

. 1858 - Superimposed flow stopped due to HP misunderstanding.

1920 - Restarted superimposed flow.

2340 - Completed superimposed leak verification test.

September 11, 1984 0101 - Commenced containment depressurization.

1350 - Containment at 14.534 psia.

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3.2 GENERAL TEST DESCRIPTION

e. 3.2.1 Initial Conditions -

In accordance with the North Anna Unit No.1 CILRT Procedure 1-PT-61.1 (Reference 2), the following is a partial listing of the initial condi-tions completed and documented prior to containment pressurization:

a. General . inspection of the accessible interior and exterior surfaces of the containment structure was performed.

b. All test instrumentation calibrated or functionally verified within six months of the test.

c. All required system valve lineups completed.

d. Containment air recirculation system operating to maintain

stable conditions.

e. Plant computers were operational and programmed for the CILRT.

f. The official Log of Events was established.

g. Site meteorological data was recorded during the performance of the test.

h. All required Types B and C leakage testing complete or reviewed O by the Test Director.

k.

3.2.2 Equipment and Instrumentation Pressurization of the containment was achieved by the utilization of ten air compressors. Compressed air was piped through two after-coolers in parallel and then through a refrigerant air dryer. Ade-quate instrumentation and valving were installed to maintain control of the compressed air quality throughout the pressurization sequence. The total capacity of the pressurization system was-slightly in excess of 10,000 cubic feet per minute.

The various containment parameters were monitored by the Leakage Mcnitoring System instrumentation. The instrumentation (Attach-ment 3.2A), ' consisted of multiple resistance temperature detectors.

(RTDs), moisture dectectors, ~ and two absolute pressure quartz mano-meters. The general locations of the temperature and moisture sen-sors are shown in Attachments 3.2B and 3.2C.

A pair of rotometers were-used to perform the superimposed leakage verification test. .W ith the exception of these rotometers, all test instrumentation was monitored by the plant. computer.

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g-- , * + ~ we -.._~w w-- ,-% - ,-e*- +w, ,e-, --+,--.<,-e ,-,...,e-,,m-__-,,---. + - - - - . . . . - , , - - .

3.2.3 Data Acquisition System s The data acquisition system used for the North Anna Unit No. 1 CILRT was the Westinghouse Prodac P250 process plant computer.

For the CILRT, the P250 monitored the following instrumentation:

Type Scan Rate (sec) 18 RTDs 32 5 moisture detectors 32 2 quartz manometers 2 The input to the CILRT program was a P250 calculated 10-minute average.

During the August 1984 CILRT, it was noted that the CILRT program was not always running at 10 minute intervals. The P250 10-minute average program was determining .10-minutes by counting the number of accumulated scans ,that should .have been collected. For example, a 2-second scan should have 300 scans accumulated. The time skewing was random in nature. This was attributed to the variable system demand. For the September 1984 CILRT, the P250 average program was modified to force an average at 10 minutes, even if the scan counter had not accumulated all of its scans.

The CILRT program performs sensor validity checks on the temperature, moisture, and pressure sensors to identify any aberrant behavior. If all sensors are trending within their CILRT program limits, the program cal-culates weighted average _ dewpoint temperature, vapor pressure, weighted

- average containment temperature, and containment air mass.

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f, Instantaneous values of the CILRT instruments were recorded every 5 min-utes during the test period,~using the P250 digital trend function on the

' operator's console.

During the August 1984 CILRT, - the RTD sensitivity was determined to be causing some data scatter. .A three-fold improvement in the RTD sensitiv-ity was realized by changing the range of the computer bridge. circuit.

This improvement was in place for the September 1984 CILRT.

J3.2.4. Data' Resolution System

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Once th'e P250 has acquired the appropriate data, the reduced parameters

" are manually input into-Vepco's Richmond Computer System for leakage rate calculations. For the North Anna . Unit No.1 CILRT, the Absolute Method.

of Mass Point Analysis was used to determine the, leakage rate.

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l Absolute Method of Mass Point Analysis

-t This method consists of calculating air masses within the containment f^}s

\~- structure over the test period from pressure, temperature, and dewpoint observations. The air masses are computed using the ideal gas law as follows:

Mass = 144V (P-Pv) (Eq.1)

RT Where:

M = air mass, Ibn P = total pressure, psia Pv = vapor pressure, psia R = 53.35 ft-lbf/lbm*R (for air)

T = average containment temperature, *R V = containment free volume, 1.825 x 10 8 ft3 The leakage rate is then determined by plotting the air mass as a func-tion of time, using a least-squares fit to determine the slope, A = dm/dt. The leakage rate . is expressed as a percentage of air mass lost in 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months or symbolically:

Leakage rate = (A/B) (-2400) (Eq. 2)

Where A is the slope of the least-squares curve and B is the y intercept, the sign convention is such that the leakage out of containment is posi-f t tive and the units are in percent / day.

A 95-percent confidence interval is calculated using a Student's t dis-tribution. The sum of the leakage rate and the 95-percent confidence interval is the UCL.

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'O L^y J J ATTACHMENT 3.2A :

INSTRUMENTATION Computer Point Range (1) Zone (2) Accuracy Instrument Weight Factor T1002A 0-200*F A i 0.1*F TE-LM-100-3 0.06785 T1003A 0-200*F B 0.I*F TE-LM-100-4 0.07513 i 0.1*F TE-LM-100-5 0.04846 T1004A 0-200*F C T1005A 0-200*F C i 0.1*F TE-LM-100-6 0.04846- i 0.1*F TE-LM-100-7 0.04846 T1006A 0-200*F E T1007A 0-200*F E 0.1*F

'TE-LM-100 0.04846 0.1*F 0.09604 T1008A 0-200*F F TE-LM-100-9 F i 0.1*F cTE-LM-100 0.09604~ T1009A 0-200*F T1010A 0-200*F F i 0.1*F TE-LM-100-11. 0.09604 0.1*F TE-LM-100-12 - 0.02256' T1011A 0-200*F G T1012A 0-200*F 'N i 0.1*F TE-LM-100-13 0.02256 0.02256- T1013A 0-200*F G 0.1*F TE-LM-100-14 i 0.1*F TE-LM-100-15 0.02256 T1014A. 0-200*F H T1015A 0-200*F D i 0.1*F TE-LM-100-16 0.04972 0.04972 T1016A 0-200*F D 0.1*F TE-LM-100-17 i 0.1*F TE-LM-100-18 0.04972 T1017A 0-200*F D 0.06785 T1036A 0-200*F A 0.1*F TE-LM-100-19 ! 0.1*F TE-LM-100-20 0.06785 T1040A 0-200*F B 0.12569 Y2020A 32-110*F I 0.5*F MT-LM-100-1 i 0.5*F MT-LM-100-2 0.12569 T1042A 32-110*F I 0.24954- T1044A 32-110*F J 0.5*F MT-LM-100-4 i 0.5*F 0.24954 T1045A 32-110*F J MT-LM-100-5 0.24954 T1041A 32-110*F J i 0.5*F MT-LM-100 - i 0.02 psia PIT-LM-102 -- U2173 0-100 psia U2174 0-100 psia - 0.02 psia PIT-LM-107 --

' NOTES (1) RTD ranges changed to 60-120*F-for September 1984 CILRT.

(2) Zone used_for sensor validity checking purposes only.

B1-1426028-5025J 1 of 1

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-2. TE

1, 2 NOT USED

3. MT

MT-LM- 100-1 (TYP)

4. MT-3 NOT USED ATTACHMENT 3.28 INSTRUMENTATION LOCATION

~

TEMPERATURE & MOISTURE DETECTORS Os NORTH ANNA POWER STATION-UNITNo.1 SEPTEMBER 1984, CILRT

O l

l TE-3 l [TE-4 l MT-2 l TE-15 l l TE-8 TE-5 l l TE-9 TE-18 l lTE-16 ,

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l TE-19 l lTE-12 l l TE 17 l PLAN VIEW ATTACHMENT 3.2C INSTRUMENT LOCATION TEMPERATURE E MOISTURE DETECTORS O NORTH ANNA POWER STATION-UNIT Nat SEPTEMBER 1984, CILRT e -- , - v,,- ,,,-v,a-.-. .,,w.. . - - - .

3.3 TEST RESULTS D

(V 3.3.1 Presentation of Test Results The test data for the September 1984 CILRT test is based on a 24-hour period starting at 18:00 hours on September 9, 1984. The final test results were determined by VEPCO's Richmond CILRT computer program. The reduced input data, test results, and representative graphs are contained in Attachments 3.3A through 3.3 F.

The Absolute Method - Mass Point Analysis test results satisfy the procedural acceptance criteria of 0.075 percent / day.

The Type A test instrumentation was verified by the superimposed leakage test method. This method was required by the NRC. The results were acceptable, as shown in Section 3.3.2.2.

3.3.2 CILRT Results The CILRT was conducted in accordance with the North Anna 1-PT-61.1 surveillance test procedure. The results for the CILRT and for the e

superimposed leakage test are shown below.

3.3.2.1 Mass Point Analysis Results Item (Percent / day) b

\

1. Leakage rate 0.027867

2. Confidence level 0.001691

3. Type C leakage penalty 0.003072

4. Total 0.032630 3.3.2.2 Superimposed Leakage Test Rest.lts The superimposed leakage path exhausted to the station' process vent system. Changes in the process vent system pressure caused a change in the superimposed leakage value that was desired for the test. The' exact time the change in the back pressure occurred is not known. The time the change was found is the time that is used in the following calculations.

1. Calculate superimposed leakage, Lo-

-A. Corrected flow for 150 cfh at 41 psig for period 19.667 to 22:250 hours on September 10, 1984. ,

Lo2 = 150 41. + 14.696 \ = 292.01 scfh 14.696 Note: Change in process vent backpressure occurred prior to 22:250 hours.

B .. Corrected flow for 129 cfh at 41.5 psig for period 2225.0 to

._s 2366.7: hours on September 10, 1984. '

B1-1426028-5025H 3.3-1

Lo2 =-129 [41.5 + 14.69M \ = 252.25 scfh 14.696

\ /

\ C. Calculate average flow

i. 292.01 scfh x 2.583 hours0.00675 days 0.162 hours 9.63955e-4 weeks 2.218315e-4 months = 754.26 scf ii. 252.25 scfh x 1.417 hours0.00483 days 0.116 hours 6.894841e-4 weeks 1.586685e-4 months = 357.44 scf

- iii. Average flow in 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months = 277.93 scfh D. Lo, in percent / day

i. 277.93 scfh , x 286.12 scfh 0.1d h or Lo = 0.097138 %/ day E. Composite Leakage, Lc

i. Lc = 0.109325 %/ day F. Leakage rate from~24 hour CILRT, L,,

i. L,,= 0.027867 %/ day O. L,, + L, i .25L,

i. 0.027867 + 0.097138 + 0.025 = 0.150005 g ii. 0.027867 + 0.097138 - 0.025 = 0.100005 l 0.100005 < 0.109325 < 0.150005 The composite flow. is L within the limits even when using a higher than actual superimposed flow- for- the period 19:667. to 22:250 hours on

~ September 10, 1984.

3.3.2.3 Types B and C Penetration. Leakage Types-B and C Penetration Leakage are to be added since these-penetrations were not vented and drained.

The leakage assigned is the Types B and C recorded value (maximum pathway.

' analysis) when only minimum pathway analysis is required.

D B1-1426028-5025H 3.3-2 x-

- . . .- .- - .-. . . . . . - - . - . .-. - _ . ~ . . . . - . .- - .

4 i

1' Penetration Leakage 4 No. (scfh) ,

1 i'-

8 0.28 i 9 4.5 l 11 0.18

j. 18 0.35

}, 26. 0.49 i 39 1.58

i. 40 0.85 4-41 0.35

! 56B 0.21 l Total 8.79 scfh or 0.003072 %/ day i

! 8.79 _ X X = 0.003072 1 286.12- 0.1 i.

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ATTACHMENT 3.3A CONTAINMENT INTEGRATED LEAKAGE RATE TEST

.FROM 1800 HOURS ON 9/9/84 to 1800 HOURS ON 9/10/84 INPUT VARIABLES Absolute Vapor Absolute Time- Pressure Pressure Temperature Dewpoint

'(hr) (psia) (psia) (*R) (*F) o0. 0 58.634 0.1929 532.42 52.18 0.333 58.625 0.1921 532.32 52.06 0.666 58.616 0.1909 532.26 51.89 1.000 58.609 0.1903 532.21 51.81 1.333 58.602 0.1895 532.15 51.70 1.666 58.597 0.1890 532.10 51.62 2.0 58.593 0.1888 532.07 51.59 2.333 58.589 0.1885 532.03 51.55 2.666 58.585 0.1889 532.01 51.61 3.0 58.579 0.1886 531.97 51.56 3.333 ' 58.575 0.1879 531.92 51.46 3.666 58.571 0.1877 531.89- 51.43 4.0 58.567 0.1869 531.85 51.32 4.333 58.563 0.1872 531.83 51.36 x ,, 4.666' 58.559 0.1862 531.80 51.22 5.0 58.555 0.1860 531.78 51.19 5.333 58.552 0.1854 531.74 51.10 5.666- 58.548 0.1854. .531.71' 51.11

. 6.0 - 58.545 0.1852 531.69 51.08 6.333- 58.542 0.1848 531.67 51.01 6.666 58.539 0.1843 531.64- 50.95 7.0 58.536 0.1843 531.63: 50.95'

~7.333: 58.534- 0.1841 531.60 50.92 7.666 58.531 0.1841 531.57 50.91 8.0 58.528 0.1837 531.56 50.86 8.333 58.526 0.1837 531.55 50.86 8.666 58.523 0.1837 531.53 50.85

-9.0 ~ 58.521 0.1834 -531.51- 50.81 9.333' 58.518 0.1831' 531.50 -50.76

-9.666-- -58.516 --0.1832 531.49 50.78 10.0 58.514 0.1831 -$31.47 50.76

-10.333 58.512 0.1826 -531.45 50.69 10.666. '58.510- 0.1823 531.44 50.65 11.0 .58.507 0.1824 531.42 50.67 11.333- 58.505 0.1822 -531.40 50.64-e 11.666 58.503 0.1820 531.39- 50.60 12.0 58.500 '0.1815 531.37 50.53

)

B1-1426028-5081 1 of 2

Absolute Vapor Absolute p Time Pressure Pressure Temperature Dewpoint (hr) (psia) (psia) (*R) (*F) 12.333 58.498 0.1814 531.35 50.52 12.666 58.495 0.1811 531.34 50.47 13.0 58.493 0.1814 531.33 50.52 13.333 58.491 0.1809 531.30 50.44 13.666 58.489 0.1*96 531.28 50.39 14.0 58.486 0. 806 531.28 50.39 14.333 58.484- 0.1805 531.26 50.38 14.666 58.482 0.1799 531.24 50.29 15.0 58.479 0.1797 531.21 50.26 15.333 58.478 0.1795 531.19 50.23

'15.666 58.475 0.1800 531.19 50.31 4

16.0 58.474 0.1792 531.16 50.18 a

16.333 58.471 0.1796 531.15 50.24 16.666 58.470 0.1796 531.14 50.24 17.0 58.468 0.1794 531.12 50.21 3

17.333 58.467 0.1795 531.12 50.23 17.667 58.465 0.1797 531.11 50.26 l 18.0 58.464 0.1799 531.08 50.29 18.333 58.463 0.1796 531.09 50.24

, 18.666 58.461 0.1794 531.08 50.21

[L 19.0 58.460 0.1796 531.07 50.25 is 19.333 58.458 0.1795 531.05 50.23 19.666 58.457 0.1790 531.04 50.16 l 20.0 58.456 0.1790 531.02 50.16

20.333 58.454 0.1790 531.02 50.15 120.666 58.452 0.'1788 531.00 50.13 21.0 58.451 0.1792 530.99 50.18 21.333 58.450 0.1792 530.97 50.18 ~

j- '21.666 58.449 0.1790 530.96 50.16-

~. ,

22.0 '58.447 0.1793 =530.95 '50.20

(.

22.333 , 58.446 (.1787 530.93 50.11 l 22.666 '58.444 0.1791 530.92 50.17 E 23.0 58.443 0.1792 530.91 50.18 L 23.333 58.441 0.1788 530.91 50.13 U 23.666 '58.440 0.1790 530.89 50.15 l- 24.0 58.438 0.1790 530.85 50.16 l;

o i'

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B1-1426028-5081 2 of 2 L

f s ATTACHMENT 3.3B CONTAINMENT INTEGRATED LEAKAGE RATE TEST FROM 1800 HOURS ON 9/9/84 to 1800 HOURS ON 9/10/84 ABSOLUTE TEST METHOD, MASS POINT ANALYSIS Time Mass Leakage Conf UCL (hr) (Ibs) (pet / day) (pet / day) (pct. day) 0.000 540698.03 0.000000 0.000000 0.000000 0.333 540724.20 0.000000 0.000000 0.000000 0.667 540712.98 0.099500 0.030528 0.630528 1.000 540704.20 0.009669 0.236953 0.227284 1.333 540707.50 0.001420 0.113155 0.114575 1.667 540717.20 0.014064 0.069887 0.055822 2.000 540712.60 0.011515 0.046797 0.035282 q, 2.333' 540718.80 0.016373 0.034064 0.017691 2.667 540698.21 0.000724 0.031802 0.032526 3.000 540686.54 0.017867 0.030961 0.048828 3.333 540706.76 0.014165 0.025223 0.039388 3.667 540702.14 0.013850 0.020751 0.034601 4.000 540712.82 0.008516 0.018235 0.026751 4.333 540693.54 0.012255 0.015967 0.028222

'4.667 540695.95 0.013577 0.013806 0.027383 5.000 540681.15 0.018510 0.013013 0.031524 (jg s 5.333 540699.76 0.016673 0.011573 0.028247 5.667 540692.57 0.016770 0.010242 0.027012 6.000 540687.03 0.017741 0.009180 0.026921 6.333 540684.01 0.018768 0.008297 0.027066 6.667 540690.53 0.018158 0.007509 0.025667 7.000 540672.90 0.020268 0.007124 0.027392 7.333 540686.78 0.019644 0.006518 0.026162 7.667 540690.13 0.018522 0.006065 0.024586 8.000 540675.66 0.019256 0.005615 0.024871 8.333 540667.29 0.020620 0.005346 0.025966 8.667 540660.46 0.022261 0.005200 0.027461 /

9.000 540664.80 0.022983 0.004874 0.027857 9.333 540650.31 0.024738 0.004849 0.029586 9.667 540640.69 0.026831 0.004965 0.031796 10.000 540643.76 0.028135 0.004812~ 0.032948 ;

10.333 540649.97 0.028580 0.004528 0.033108 10.667 540644.11 0.029213 0.004294 0.033507 11.000 540635.39 0.030179 0.004146 0.034325

'11.333 540639.08 0.030610 0.003928 0.034538 11.667 540633.22 0.031187 0.003749 0.034936 12.000 540630.14 0.031718 0.003581 0.035299 12.333 540632.57- 0.031909 0.003395 0.035305 12.667 540618.05 0.032694 0.003308 0.036002 13.000 540606.57 0.033806 0.003322 0.037128 13.333 540603.54 0.033858 0.003159 0.037017 lt 13.667 540628.46 0.033573 0.003019 0.036592

\s G B1-1426028-5082 1 of 2

ATTACHMENT 3.3B (Cont)

Time Mass Leakage Conf UCL

. (hr) (1ba) (pct / day) (pet / day) (pet. day) 14.000 540600.64 0.034394 0.002986 0.037380 14.333 540603.07 0.034906 0.002891 0.037797 14.667 540610.47 0.034966 0.002762 0.037728 15.000 540615.04 0.034752 0.002649 0.037401 15.333 540627.98 0.034014 0.002634 0.036648 15.667 540595.20 0.034391 0.002549 0.036940 16.000 540624.51 0.033684 0.002539 0.0.36223 16.333 540603.15 0.033648 0.002436 0.036084 16.667 540604.06 0.033513 0.002343 0.035856 17.000 540607.72 0.033214 0.002271 0.035485 17.333 540597.21 0.033171 0.002185 0.035356

, 17.667 540586.98 0.033341 0.002110 0.035450 18.000 540606.38 0.032924 0.002072 0.034996 18.333 540590.03 0.032889 0.001997 0.034896

'18.667 540583.51 c 0.032973 0.001928 0.034901 19.000 540581.94- 0.033019 0.001861 0.034881 19.333 540584.98 0.032936 0.001799 0.034736 19.667 540590.22 0.032693 0.001755 0.034448 20.000 540601.30 0.032187 0.001766 0.033953 20.333 540583.36 0.032046 0.001714 0.033759 20.667 540586.41 0.031809 0.001675 0.033484 21.000 540584.22 0.031591 0.001635 0.033226 j- . 21.333 540595.31 0.031141 0.001643 0.033784

\' 21.667 540597.45 0.030650 0.001662 0.032312 22.000 540586.60 0.030351 0.001637 0.031989 22.333~ .540603.25 0.029756 0.001689 0.031446 22.667 540591.17 0.029374 0.001681 0.031055 23.000 540591.45 ,0.028984 0.001675 0.030659 23.333 540575.99' O.028834 0.001634 0.030468 23.667 s540585.84 0.028513' O.001618 0.030131 24.000 540607.39 0.027867 0.001692 0.029559 L

3

.B1-1426028-5082 2 of 2

4 ATTACHMENT 3.3C

~

P SUPERIMPOSED LEAKAGE RATE TEST ,

( FROM 1940 HOUL 3 ON 9/10/84 TO 2340 ON 9/10/84 1

4 INPUT VARIABLES Time Absolute Temperature Dewpoint i (hr) (*R) (*F) Absolute Pressure 1

0.0 530.81 50.060 58.429 0.333 530.80 50.050 58.427 0.666 530.78 49.980 58.424 1.0 530.77 50.010 58.422 1.333 530.76 50.010 58.420

cl.666 530.75 50.100 58.418 2.0 530.74 50.120 58.416 !

l 2.333 530.73 49.990 58.414

- 2.666 530.72 50.000 58.412 3.0 530.71 49.970 58.410 3.333 530.71 50.000 58.408 3.666 530.67 49.890 58.404 4.0 530.65 49.820 58.399 i

F G

B1-1426028-5082 1 of I

/ ATTACHMENT 3.3D

\m]) SUPERIMPOSED LEAKAGE RATE TEST FROM 1940 HOURS ON 9/10/84 to 2340 HOURS ON 9/10/84 ABSOLUTE TEST METHOD, MASS POINT ANALYSIS 4

Time Mass Leakage Conf UCL (hr) (Ibe) (pet / day) (pet / day) (pet. day) 0.000 540570.78 0.000000 0.000000 0.000000 0.333 540563.02 0.000000 0.000000 0.000000 0.667 540559.85 0.072787 0.089661 0.162448 1.000 540549.63 0.088732 0.034792 0.123525 1.333 540541.25 0.096491 0.019548 0.116040 1.667 540527.33 0.111409 0.021744 0.133153 2.000 540517.72 0.118516 0.016723 0.135240 2.333 540517.35 0.112016 0.014058 0.126074 2.667 540508.35 0.109501 0.010965 0.120466 3.000 540501.82 0.106996 0.008995 0.115991 3.333 540481.41 0.113120 0.009717 0.122837 3.667 540491.77 0.106997 0.010245 0.117241 4.000 540470.01 0.109323 0.008911 0.118234 1

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U B1-1426028-5082 1 of I'

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SECTION 4 LOCAL LEAKAGE RATE TESTS (TYPES B AND C)

Section 4.contains the LLRT data performed since the March 1981 Type A Test.

The data contained in this section is sununarized below:

Attachment 4A 1984 LLRT Data (Refueling Outage)

Attachment 4B 1983 LLRT Data Attachment 4C 1982 LLRT Data (Refueling Outage)

Attachment 4D 1981 LLRT Data-The combined "as-left" leakage rate for all the valves and penetrations is well . below the acceptance criteria of less than 0.60L '"# "'#

applicable surveillance procedures for the actual totals. A' L

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ATTACHMENT 4A 1984_ LOCAL. LEAKAGE RATE TEST PENETRATION DATA Prerepair Postrepair Type Equipment / Valves Leakage Leakage

. Penetration' ' Test Tested (scfh) (scfh) Repair / Notes 1 Component .C TC-CC-103B. 0 0 Cooling 2- ' Component C 1-CC-193 0 0 Cooling 4 -Component C; .TV-CC-198 0 0 Cooling.

-5 Component C TV-CC-103A 0 0 Cooling-7B- Safety 1: 1-SI-79 0.35 0.35

Injection 'MOV-1867C 0 0 MOV-1867D See Repair 0 Found MOV-1867D motor inoperable.

Replaced motor.

8- Component C TV-CC-101A 0.28 0.28 Cooling TV-CC-101B- 0.28 0.28 9 Air Recircula- C: 1-CC-572 >35 4.5 WR051762 tion Cooling Water 10 Air Recircula-- C 1-CC-559 0 0 tion Cooling _

i Water i

11 Air Recircula- C 1-CC-546 >35 0.18 'WR051760

, tion' Cooling'.

l Water l

.B1-1426028-5025K 1 of 10

-V \j V ATTACHMENT 4A (Cont)

'1984 LOCAL LEAKAGE RATE TEST PENETRATION DATA ,.

Prerepair' Postrepair.

Type Equipment / Valves- Leakage Leakage Penetration Test- Tested (sefh) (scfh) Repair / Notes 12B Air Recircula- C TV-CC-100B 0 0 tion Cooling TV-CC-105B 0 0

, 13B Air Recircula- C TV-CC-100C 0 0 tion Cooling- TV-CC-105C 0 0

~ Water 4

14B Air Recircula- C TV-CC-100A 0 tion Cooling

- TV-CC-105A 4.6 WR051761

' Water WR014343 15 Charging C 1-CH-322 0 0 MOV-1289A 0 0 1

, 16 : Component lC 1-CC-154 >35 0 WR Cooling TV-CC-104C 0 0

'17 Component C 1-CC-119 >35 0 WR Cooling TV-CC-104B 0 0 i

18 Component 'C 1-CC-84 0.35 0.35 i Cooling TV-CC-104A 0 0 i 19B RCP Seal Water C 1-CH-402 0- 0 MOV-1380 0 0.28 WR Adjusted torque switch M3V-1381 0 0 20 Safety C 1-SI-110 0 0 Injection 1-SI-58 0 0 22 Safety C 1-SI-185 0 0 Injection MOV-1836 0 0 B1-1426028-5025K 2 of 10

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. ATTACHMENT 4A'(Cont). 2 ., ~3 . ,

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i7; 1984 LOCAL LEAKAGE RATE TEST PENETRATION DATA

.c ,

Prerepair Postrepair y, ,

Type. Equipment / Valves Leakage Leakage Penetration Test Tested (sefh) (scfh) Repair / Notes i:

's 24B RHR C

~

1-RH-36 ^d 0 0 1-RH-37 1 2.38 2.38

.x.

/ ) "\.725 Component C TV-CC-102E O O fi(' '3.,yt' LCooling TV-CC-102F 0 0 26 baponent C TV-CC-102A 0.17- 0.17 CoolinF TV-CC-102B 0.49 0.49

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. ' 127 Ccaponent C TV-CC-102C 0 0' Cooling TV-CC-102D 0 0

28B ' Letdown .C .RV-1203 2.1 0 WR027243 HCV-1200A,B,C >35 10.85 WR051769 WR051768 i WR051766

. HCV-1142 0 0 ,

TV-1204- 0 0

~

31 Containment C 1-HC-14 >35 2.45 WR051782 Atmosphere TV-HC-105A 3.5 0.4 Combina- WR051781

-Cleanup TV-HC-105B 0.87 tion WR051780 ,

i TV-HC-101A,B 0 0 1'l 32. Wet Layup C 1-WT-468 2.1 0 WR051771 1-WT-465 0 0 3

33 -Primary Drains C .. TV-DG-100A 0 0 .?

TV-DG-100B .0 ;0 '

B1-1426028-5025K 3 of 10

.fN- q.

-Q Q -

ATTACHMENT 4A (Cont) 1984' LOCAL LEAKAGE RATE TEST PENETRATION DATA 2Prerepair Postrepair Type Equipment / Valves Leakage Leakage Penetration Test Tested (scfh) (sefh) Repair / Notes

' 34 - Fire. Protection C 1-FP-275 ~0 0

.1-FP-274 0 0 38 Containment, Sump C TV-DA-100A- 0.25 14 . 2

'" ~

.. Pump Discharge ..TV-DA-100B 0.3 11.2

^39 Blowdown C TV-BD-100A 1.5 1.5 TV-BD-100B 1.58 1.58 40 Blowdown C TV-BD-100E- 5.59 0~ WR051764 TV-BD-100F 0.85 0.85

41' ' Blowdown 'C TV-BD-100C 0.35 0.35

.TV-BD-100D 0.35 0.35 42; Service Air- C 1-SA 0 0 1-SA-29 0.5 0.5 43 Air Sample C 1-IA-149 TV-RM-100D TV-RM-100A 44 Air Sample' C- lTV-RM-100B 0 0 TV-RM-100C 0 0

.45 PG Water C 1-RC-149 0 0

'TV-1519A 0 0

.46B. .Loopfill C 1-CH-330- >35 0 WR05177'i FCV-1160 >35 t 0.175 WR05177S B1-1426028-5025K 4 of.10

"~ '~ ~ ""~ ~ ~ ' ~

ATTACHMENT.4A (Cont)'

1984 LOCAL' LEAKAGE. RATE TEST. PENETRATION DATA

, Prerepair Postrepair' LType Equipment / Valves Leakage" Leakage-Penetration -Test Tested (sefh) (scfh) Repair / Notes 47 Instrument Air C 1-IA-55 0.4 0.4 TV-IA-102A 0 -0' TV-IA-102B 0 0 48 Primary Vent C TV-VG-100A 0 0 Header ~ TV-VG-100B 0 0 50- . Safety C- -HCV-1936 0 0 Injection TV-SI-101 0 0 i

1-SI-106 53 Safety C 0 0.93 WR051788 Injection TV-SI-100- 0 0 54 Primary .C 1-DA-39 0 0

. Vent 1-DA-41 0 0 55B Leakage C .TV-LM-100E O O Monitoring -TV-LM-100F 0 0-56A Sample System C TV-SS-102A 0 0 TV-SS-102B 0 0 56B Sample System C TV-SS-106A 0.07 0.07

, TV-SS-106B 0.21 0.21 56C Sample' System C TV-SS-100A 0 0 TV-SS-100B 0 0 56D -Sample System C' TV-SS-112A. 0 0

.TV-SS-112B 0 0 57A Sample System C TV-SS-104A 0 0 Changed penetration TV-SS-104B' O O number from SSA B1-1426028-5025K 5 of 10

- . - . . . . - . . - .. . -. . ,. ~

f"" s .. p . 'p. .

d (

,j .( j -

ATTACHMENT 4A (Cont)

1984' LOCAL LEAKAGE RATE TEST PENETRATION DATA ,

.Prerepair-. Postrepa'ir Type- . Equipment / Valves Leakage Leakage Penetration. . Test ' Tested (scfh) -(sefh) Repair / Notes

-57B- Leakage C .TV-LM-100G 0 0 Changed penetration' Monitoring -TV-LM-100H- 0 0 number from 57A 57C' Sample System C _TV-SS-101B 0 0 Changed penetration TV-SS-101A 0 0 number from 57C 60B Safety .C 1-SI-207 0 0 Injection- MOV-1890B 0.70 0.70 61B. ' Safety C 1-SI-206' 0 0'

' Inj ection MOV-1890A 0 0 62 Safety .C MOV-1890C 0 0 Injection MOV-1890D 0 0

.1-SI- 19 7. 0 0 1-SI-199 0 0

.1-SI-195- 0 0 63 Quench Spray C MOV-QS-101B 0 0 1-QS-19' O O 64 Quench Spray. C MOV-QS-101A 0 0 1-QS-11 0 0 66B Recirculation C MOV-RS-100A 0.6 0.6

-Spray NOV-RS-101A 22 11.2 WR051792 WR Adjusted torque switch 67B~ : Recirculation C- MOV-RS-100B 0 0 Spray lMOV-RS-101B. 0 0 B1-1426028-5025K- 6 o f 10 -

p ys. -

fm.'

ATTACHMENT 4A (Cont) 1984 LOCAL LEAKAGE RATE TEST PENETRATION DATA Prerepair Postrepair Type Equipment / Valves Leakage Leakap Penetration . Test Tested (scfh) (scfh) Repair / Notes.

70 Recirculation C HOV-RS-156B 0 0 Spray 1-RS-27 0 0

' 71 -

Recirculation C MOV-RS-156A 9.2 5.9 WR012196 Adjusted Spray torque switch 1-RS-18 0 0 79 Service Water C MOV-SW-103D >35 1.61 WR11656 80 Service Water C' MOV-SW-103C 7.34 7.34 81 Service, Water C MOV-SW-103B 8.04 8.04 82 Service Water C MOV-SW-103A 0 0 83 Service Water C MOV-SW-104D 0.42 0 WR 84 Service Water C .MOV-SW-104C 1.89 1.89 85 Service Water C MOV-SW-104B 0 0 86 Service Water -C MOV-SW-104A 0 0 89 Air Ejector C 1-VP-12 3.5 0.7 WR048279 TV-SV-102-1 0 0 TV-SV-103 1.93 1.93

.90 Purge C MOV-HV-100C >35 5.00 WR048210 Combination Combination MOV-HV-100D WR048211 MOV-HV-101 B1-1426028-5025K 7 of 10

g. . . ~ . . .- . _ , -. _ . _ . . . . .- _ . . -

,/, x .

f\ '

ATTACHMENT 4A-(Cont) ,

1984 LOCAL LEAKAGE RATE TEST PENETRATION DATA' Prerepair' Postrepair Type Equipment / Valves Leakage Leakage-Penetration : Test.- Tested (sefh) (scfh) Repair / Notes Purge C .NOV-HV-100A- >35 0.85 WR051779 Combination Combination.

NOV-HV-100B

-NOV-HV-102 92 Containment C TV-HC-104A 0 0 Atmosphere TV-FC-104B 0 0 Cleanup TV-CV-150C 0 0 TV-CV-150D 0 0

~

93 Containment C TV-CV-150A 0 0' WR043555

. Atmosphere TV-CV-150B 0 O WR043554 Cleanup .TV-HC-106A 0 0 TV-HC-106B 0 0 94 Containment C TV-CV-100' O O Vacuum TV-CV-4 0 0 97A' Pressurizer C 1-RC-176 0 0 Changed penetration

. Dead Weight 1-RC-178 0 0 number from 97B Calibrator 97B Leakage C TV-LN-100B 0 0 Changed penetration Monitoring TV-LM-100A 0 0 number from 97C 97C Sample System' C TV-SS-103A 0 0 Changed penetration TV-SS-103B 0 0 number from 97A 98A Containment C TV-HC-108A 0 0 Atmosphere. TV-HC-108B 0 0 Cleanup

~

B1-1426028-5025K ~ 8 of 10

~

/-

J r .

Q ATTACHMENT 4A (Cont)'

y~ :1984 LOCAL LEAKAGE' RATE TEST PENETRATION DATA Prerepair Postrepair Type Equipment / Valves. Leakage Leakage

' Penetration Test Tested (scfh). (scfh) Repair / Notes

'98B Containment C TV-HC-100A- 0' 0

' Atmosphere TV-HC-100B 0 , 0

. Cleanup

~

100 . Wet Layup C 1-W-491 0 0 1-W-488 1.4 0 WR051722 s

.103 Reactor Cavity C 1-RP-28 0.5 0 Tightened valve Purification 1-RP-26 0.5 0 Tightened valve 104 Reactor Cavity C 1-RP-6 0 0~

. Purification 1-RP-8 0 0 105A Leakage C- TV-LM-100D' O O Monitoring TV-LM-100C 0 0 4

105B _ Leakage IC TV-LM-101B 0 0

-Monitoring: TV-LM-101C 0 0 105C Leakage C TV-LM-101D 0 0

. Monitoring TV-LM-101A 0 0 105D Containment C TV-HC-102A 0 0

. Atmosphere' TV-HC-102B 0 0 Cleanup

! 106B Safety C TV-1842 0 0

! Injection TV-1859 0 0 108 . Wet Layup C 1-W-514 27.32 8.45 WR051765 1-W-511 - 0.77 0.77 4

j B1-1426028-5025K 9 of 10 1

d w

r ,

m O/. U U(~ .

ATTACHMENT 4A'(Cont) 1984-LOCAL LEAKAGE RATE TEST PENETRATION DATA Prerepair Postrepair.

Type Equipment / Valves Leakage Leakage Penetration Test Tested (scfh)- (sefh) Repair / Notes 109 Containment C 'l-HC-18 .

2.38 0.63 WR'

. Atmosphere TV-HC-103A, B: 0 0 TV-HC-107A, B. 0.2 ~ 0. 2 Ill- Sample System C 1-DA-66 0 0 TV-DA-103A 0 0 TV-DA-103B 0 0 113B Safety .C 1-SI-90 0 0 Inj ection NOV-1869B 0 0 ,

114B Safety C 1-SI-201 0 0 Injection MOV-1869A 0 0 Electrical B >0.054 (18) 1.55 18 of 128 electrical Penetrations <0.054 (110) penetrations exceeded the plant administrative limit of 0.054 scfh.

These were retorqued and retested.

Equipment B 0 Hatch Fuel Transfer B 0 Tube Personnel B 3.8 Air Lock Emergency. B 1.4 Escape Lock B1-1426028-5025K. 10 of 10

- _ _ . - _ _. s . . . . . ._ .._.

_ ~ . . . . _ _ . ._. .. 7 7

. n ATIACHMENT-4B 1983 LOCAL LEAKAGE' RATE TEST PENETRATION DATA 7

Prerepair Postrepair Type Equipment / Valves Leakage Leakage

' Penetration Test. Tested (sefh) (sefh) Repair / Notes .,

J79 Service Water .C HOV-SW-103D >11 0 80 Service Water .C' HOV-SW-103C >11' 0 ,

81 Se rvice . Water C HOV-SW-103B -0 0 ,

82 Service Water. .C MOV-SW-103A' >11 0 83 Service Water C .MOV-SW-104D >11 0

~

84 Service Water :C MOV-SW-104C >11 0 ,

85 Service Water C MOV-SW-104B 0 0 86- Service Water C MOV-SW-104A >11 0 Personnel B 1.4 (6/83) ,

Air Lock 0 (12/83)

Emergency B 0.4 (6/83) ,

Escape Work 4.3 (12/83) t t

i B1-1426028-5025L 1 of 1 l

}" ,

, n -

b v, U ATTACHMENT'4CI 11982 LOCAL LEAKAGE RATE TEST PENETRATION DATA.

.Prerepair Postrepair-

' Type- Equipment / Valves' Leakage Leakage Penetration Test Tested -(scfh) (sefh) Repair / Notes L1 Component 'C TV-CC-103B 0 0

. Cooling-2 Component.- C 1-CC-193 >35 0 MR#N1-82-07081021

' Cooling 1 Replaced valve with similar valve that had S.S. body

. lug' bearings

-4 . Component. C 1-CC-198 >35 0, MR#N1-82-07081020 Cooling Replaced valve with similar valve that had S.S. body lug bearings

5. Component .C -TV-CC-103A' O O Cooling _

7B Safety C 1-SI-79 2 0.6 MR#N1-82-07121131 Injection MOV-1867C 0 0 Cleaned and lapped MOV-1867D 0 0 seats

~8 Component- .C TV-CC-101A 0 0 Cooling TV-CC-101B 'O O 9 Air Recircula - C 1-CC-572 1.5 1.5

' tion Cooling Water 10 Air Recircula-- C 1-CC-559 '.7 O 0.7-

tion Cooling Water B1-1426028-5025L 1 of.11.

I'

O O O

ATTACHMENT 4C

, 1982 LOCAL' LEAKAGE RATE TEST PENETRATION DATA Prerepair. 'Postrepair Type Equipment / Valves . Leakage -Leakage

. Penetration Test Tested ~ -(sefh)- (scfh) Repair / Notes 11- - Air .Recircula . C L1-CC-546 0.9 0.9 tion Cooling Water"

.128- ' Air Recircula- C TV-CC-100B 0 0 tion Cooling TV-CC-105B. 0 0 Water 13B . Air Recircula-~ C TV-CC-100C 0 0 tion Cooling TV-CC-105C 0 0'

. Water 14B ' Air Recircula-

~

C TV-CC-100A 0 0 tion Cooling 1TV-CC-105A 0 0 Water

.15 Charging = C CH-322' >35- 0 MR#N1-82-07121130 NOV-1289A "O O Cleaned and Lapped seats 16 Component C' .1-CC-154 0 'O Cooling TV-CC-104C 0 17 Component 'C 1-CC-119 0 0 Cooling' :TV-CC-104B 0 0 18 Component C. 1-CC-84 0 0 Cooling TV-CC-104A; 'O O 19B RCP Seal Water: C .1-CH-402 0 0 HOV-1380 0 0 HOV-1381 -0 0 B1-1426028-5025L 2 of 11

c -

.1 ATTACHMENT 4C:

1982' LOCAL LEAKAGE RATE TEST PENETRATION DATA Prerepair 'Postrepair

. Type Equipment / Valves- ' Leakage . Leakage Penetration Test Tested (sefh) (sefh) Repair / Notes 20 Safety C :1-SI-110 0 0 Injection 1-SI-58 0 0 22 Safety C .1-SI-185 0.8 0 MR#N1-82-06071620 Injection HOV-1836 0 0 Cleaned seat and replaced gasket 24B RHR C 1-RH-36 1.1 1.1 1-RH-37 1.4 1,. 4 25 Component C TV-CC-102E O O Cooling TV-CC-102F 0 0 26 Component C -TV-CC-102A 1.0 1.0 Cooling TV-CC-102B 0 0 27 Component ~ _C TV-CC-102C 0 0 Cooling. 'TV-CC-102D 0 0 28B Letdown C -RV-1203 0 0 HCV-1200A, B, C >35 11.4 MR#N1-82-08051415 Machined disc and seat MR#N1-82-08051416 Machined disc and seat MR#N1-82-08051417 Machined disc and seat HCV-1142 0- 0

.TV-1204 0 0 B1-1426028-5025L 3 of 11

O O O ATTACHMENT 4C 1982 LOCAL LEAKAGE RATE TEST PENETRATION DATA Prerepair Postrepair Type Equipament/ Valves Leakage Leakage Penetration Test Tested (sefh) (scfh) Repair / Notes 31 Containment C 1-HC-14 0 0 New isolation valve Atmosphere TV-HC-105A 0 0 Cleanup TV-HC-101A 0 0 New isolation valve 32 . W t Layup C 1-W-468 0 0 1-W-465 0 0 33 Primary Drains C TV-DG-100A 0.5 0.5 TV-DG-100B 0 0 34 Fire C 1-FP-275 0 0 Protection 1-FP-274 0 0 38 Containment C TV-DA-100A 0.3 0.3 Sump Pump TV-DA-100B 0.8 0.8 Discharge 39 Blowda n' C TV-BD-100A >11.2 0 MR#N1-82-06021733 New seat ring and gaskets, lapped plug

- and seat ring, repacked C TV-BD-100B 0 0 40 Blowdown TV-BD-100E O O MR#N1-82-06021730

>11.2 0 New gaskets C TV-BD-100F 0 0 B1-1426028-5025L 4 of 11

~

. ;/~ .

3 -

( '

V ATTACHMENT 4C 1982 LOCAL' LEAKAGE RATE TEST PENETRATION DATA-Prerepair .Postrepair Type Equipment / Valves . Leakage Leakage.

Penetration . Test- Tested (scfh) (sefh) Repair / Notes 41- Blowdown TV-BD-100C 0.7 0.7 MR#N1-82-06021732

>11.2 0 Cleaned, new seat ~ ring reset stroke, new gaskets C' TV-BD-100D 0 0 42 Service-Air 1-SA-2 0.6 0.6 Valves renumbered 1-SA-29 0 0 43 Air Sample C TV-RM-100D 0 0 TV-RM-100A 0 0 44 Air Sample' C TV-RM-100B 0 0 TV-RM-100C 0 0 45 PG. Water C 1-RC-149 0.7 0.6 MR#N1-82-06091435 Cleaned'and lapped valve C TV-1519A 0 0 46B Loopfill 1-CH-330 0 0 MR#N1-82-06071652 FCV-1160 >11.2 0 New seat gaskets and repacked 47 : Instrument Air C 1-IA-55 0.7 0.4 MR#N1-82-06170330 TV-IA-102B 0 0 48 Primary Vent C -TV-VC-100A. 0 0 Header TV-VG-100B 0 0 B1-1426028-5025L 5 of 11

O O O ATTACHMENT 4C 1982 LOCAL LEAKAGE RATE TEST PENETRATION DATA Prerepair Postrepair-Type Equipment / Valves Leakage Leakage Penetration Test- Tested (scfh) (scfh) Repair / Notes 50 Safety C HCV-1936 0 0 Injection TV-SI-101 0 0 53 Safety C 1-SI-106 0 0 Injection TV-SI-100 0 0 54 Primary Vent C 1-DA-39_ 0 0 1-DA-41 0 0 SSA Sample System -C TV-SS-104A 0 0 TV-SS-104B 0 0 SSB Leakage C TV-LM-100E O O Monitoring TV-LM-100F 0 0 56A Sample System C TV-SS-102A 0 0 TV-SS-102B 0 0 56B Sample System C TV-SS-106A 0 0 TV-SS-106B 0' O 56C Sample System C TV-SS-100A 0 0 TV-SS-100B 0 0 56D Sample System C TV-SS-112A _0 0 TV-SS-112B 0 0 57A Leakage C TV-LM-100G 0 0 l Monitoring TV-LM-100H 0 0 l

l B1-1426028-5025L 6 of 11

4

.1

. ATTACHMENT.4C.

1982_ LOCAL LEAKAGE RATE TEST PENETRATION DATA Prerepair Postrepair Type- Equipment / Valves Leakage Leakage Penetration Test Tested -(sefh) (sefh) Repair / Notes-57B Sample System C .TV-SS-101B. 0 0 TV-SS-101A 0 0 60B Safety C 1-SI-207 0 0 Injection MOV-1890B 0 0 ilB -Safety C: 1-SI-206 0 0 Injection ,

NOV-1890A 0 0 62 Safety - C MOV-1890C 0 0

- Injection MOV-1890D 0 0 -

1-SI-197 0 0 1-SI-199 .0.3 0.3 1-SI-195 1.5 1.5

- 63. Quench Spray C MOV-QS-101B 0 0 1-QS-19 0 0 64 Quench Spray C NOV-QS-101A 0 0 1-QS LO O 66B Recirculation C MOV-RS-100A >11.2 2.0 MR#N1-32-06081755 Spray- NOV-RS-101A 0 0 67B Recirculation C- MOV-RS-100B 0 0 Spray' MOV-RS-101B 0 0

. 70 Recirculation .C- MOV-RS-156B 1.6 1.6 Spray '1-RS-27 1.4 1.4 B1-1426028-5025L 7 of 11

, 1 m m r

ATTACHMENT 4C 1982 LOCAL LEAKAGE RATE TEST PENETRATION DATA

.Prerepair Postrepair

. Type : Equipment / Valves' . Leakage . Leakage

Penetration Test Tested -(scfh) (sefh) Repair / Notes

-71 -Recirculation C MOV-RS-156A~ 1.6 1.6 Spray 1-RS-18 0 0 79 _ Service Water. C MOV-SW-103D 0 0 80 Service Water C MOV-SW-103C 0- 0 81 Service Water C MOV-SW-103B 0 0 82 Service Water .C MOV-SW-103A 0 0.

83 Service Water C MOV-SW-104D 0 0 84 Service Water -C MOV-SW-104C 0 0 85 Service Water- C MOV-SW-104B 0 0 86 Service Water C MOV-SW-104A 0 0 89 Air Ejector ~C TV-SV-102-1 0 0 TV-SV-103 >11.2 0 MR#N1-82-06180341 Replaced disc seat, retainer and gasket

- 90' -Purge :C MOV-HV-100C 19.3 Combi- 19.3 Combi-MOV-HV-100D nation nation MOV-HV-101 91 Purge C .MOV-HV-100A 20.5 Combi- 20.5 Combi-

-MOV-HV-100B nation nation MOV-HV-102 B1-1426028-5025L 8:of 11

r ATTACHMENT 4C 2

1982 IhCAL LEAKAGE RATE TEST PENETRATION DATA-Prerepair' Postrepair 4 Type Equipeent/ Valves Leakage Leakage 4

Penetration -Test Tested- -(sefh) (sefh) Repair / Notes i

92 Containment C TV-HC-104A 0 0 New isolation valve

( Atmosphere TV-HC-104B 0 0 New isolation valve Cleanup TV-CV-150C 0 0 TV-CV-150D 0 0 i

- 93 . Containment C -TV-CV-150A 0 0

-Atmosphere TV-CV-150B' O O

} Cleanup TV-HC-106A 0 0 New isolation valve TV-HC-106B 0 0 New isolation valve f 94 Containment C TV-CV-100 0 0

Vacuum TV-CV-4 0 0 i 97A Sample System C TV-SS-103A. 0 0 New isolation valve TV-SS-103B 0 0 J

97B Pressurizer C RC-176 0 0 l Dead Weight 1-RC-178 0 0 l Calibrator 4

97C . Leakage C TV-LM-100B 0 0

{ Monitoring TV-LM-100A 0 0 i

. 98A Containment C TV-HC-108A 0 0 l Atmosphere TV-HC-108B 0 0 i j' Cleanup '

l 98B Containment C TV-HC-100A 0 0 Atmosphere TV-HC-100B 0 0

. Cleanup i 100 Wet Layup C W-491 0 0

,1-W-488 :0 0 l

. B1-1426028-5025L 9 of 11 '

1 v -- e ..,,r , , , -

~

ATTACHMENT =4C 1982 LOCAL LEAKAGE RATE TEST PENETRATION DATA' Prerepair :Postrepair Type '. Equipment / Valves

. Leakage Leakage Penetration Test Tested (scfh) (sefh)' Repair / Notes 103 Reactor Cavity C .1-RP-28' O 0 Purification ~1-RP-26 0 0 104 Reactor Cavity C 1-RP-6 0 0 Purification 1-RP-8 0 0 105A Leakage- C TV-LM-100D 0 0 Monitoring TV-LM-100C 0 0 105B . Leakage .C TV-LM-101B 0 0 ,

Monitoring TV-LM-101C' O O 105C Leakage C TV-LM-101D 0 0 Monitoring TV-LM-101A 0 0 105D Containment C TV-HC-102A 0 0 Atmosphere- TV-HC-102B 0 0 Cleanup 106B Safety' 'C TV-1842 0.4 0 MR#N1-82-06180342 Injection. Replaced valve stem i

plug, seat ring, and gaskets

-C TV-1859 0 0 108 Wet Layup 1-W-514 0 0 1-W-511 0 0 B1-1426028-5025L 10 of 11

- , - .. , ,_. _. . . .i

.n_----- , . . ~ . . - -

7-

.,.~..

~

g ,

ATTACHMENT 4C i

1982-LOCAL LEAKAGE RATE TEST PENETRATION DATA n:

~_ . ,

, ;Prerepair "Postrepair

' -Type. . Equipment / Valves' ; Leakage Leakage-

' Penetration ' Test ~ Tested '(sefh) (sefh) Repair / Notes'.

l' .

109 Containment ^ C 1-HC-18 0 0

. Atmosphere TV-HC-103A. 0 0

^

+1 New' isolation valve TV-HC-107A .0 0 New isolation valve l1 ~ 111- -Sample System-

.C~ TV-DA-103A- 0 0 New isolation' valve i: TV-DA-103B' 0 0 New isolation valve i

!- ,1138 . Safety. C. 1-SI-90 0

! ' Injection 'MOV-1869B 0 0 i . .

j 114B; Safety: C. 1-SI-201 1.0 0.5 MR#N1-82-06071621 i' . Injection ~ New cover gasket i

j B MOV-1869A .0 0 1 ..

{i : Electrical >0.054(4). 1.44 5 of 129 electrical Penetrations <0.054(125) penetrations exceeded the plant administrative limit of 0.054 scfh.

i- -

These were retorqued I., and retested.

1

[ Equipment B. O

Hatch

I . .

. ' Fuel Transfer B- '

j- = Tube-i

}. Personnel B 0 j . Air Lock

~ Emergency- . -B 0

. Escape'Lockl 4-B1-1426028-5025L- 11 of 11

~

i i

. .- -- _ . _. . .- . ._s , ,, . - , _ , . ., .

, -f ATTACHMENT 4D-

_ 1981 LOCAL LEAKAGE RATE TEST PENETRATION DATA Prerepair Postrepair Type. -Equipment / Valves. Leakage Leakage;

. Penetration Test Tested (scfh) (sefh) Repair / Notes

16. Component' ,C 1-CC-154 0 0 Cooling 17 Component C 1-CC-119 0 0

-Cooling 18 Component C 1-CC-84 0 0 Cooling 41- Blowdown C TV-BD-100D 0 0

'56B Sample C TV-SS-106A 0 0 System TV-SS-106B 98A Containment 'C TV-HC-108A 0 0 New isolation valves Atmosphere .TV-HC-108B -0 0 Reference DC 80-S31A Cleanup 98B Containment C TV-HC-100A 0 0 New isolation valves Atmosphere .TV-HC-100B 0 0 Reference DC 80-S31A Cleanup 105D Containment C TV-HC-102A 0 0 New isolation valves Atmosphere TV-HC-102B 0 0 Reference DC 80-S31A Cleanup Pe rsonnel B 0 (6/81)

Air Lock 1.4 (12/81)

Emergency B 2.4 (12/82)

Escape Lock B1-1426028-5025M 1 of 1

, . ~.- . .- - . - . - . - - - -. .. -- - - -

c ., 4 ATTACHMENT 1 LOCAL LEAKAGE RATE TEST

SUMMARY

ANALYSIS A request was made by the Nuclear ' Regulatory Commission (Reference NRC Report 50-338/84-29) to assess the "as-found" containment leakage condition.

The evaluation of the "as-found" containment leakage conditions requires an analysis of the containment penetrations repaired prior to the August 1984 CILRT. The details of this analysis are shown on the following pages.

Information for the 1982, 1983, and 1984 Local Leakage Rate Tcsts is also presented.

A conservative analysis indicates that certain penetrations could potentially impact the "as-found" Type A test results. Alt' tough the North Anna No. I 1984 CILRT is considered a failure, it is believed that the

-following actions will prevent this situation from happening,again:

1. Evaluate potential modifications for the recirculation spray coolers to address the problems identified in North Anna's LER 84-008, Recirculation Spray Cooler Lap Ring Cracking.

2. Review the North Anna Work Control Program to determine if adequate controls exist to prevent maintenance on a Local Leakage Rate Test (LLRT) component after the LLRT, unless post-work testing is specified.

3. Evaluate - the test equipment used for LLRTs in order to provide.

capability for measuring seat leakage up to the equivalent of the maximum allowable leakage (LA) in sefh. y

.4. Review the LLRT procedure for those penetrations that use the downstream leakage test method to require either a leakage test of the. test boundary prior to -the isolation valve test, or to perform a combination makeup test and. downstream measurement (s) to account for all leakage.

. 5. Review the LLRT procedure to require a demonstration of where the leakage path is (e.g. , 'is it leaking to- the inside of containment or to the outside of containment).

'6. Initiation of a valve repair summary.

Vepco will perform these evaluations. It is anticipated that the results of the LLRT evaluations / reviews will be completed by March 31,

.1985, based on current work schedules. The results of these evalua-tions will .be reported separately by letter and not as an addendum to'-

this report. Since these evaluations / reviews address LLRT concerns identified during the CILRT, additional CILRTs beyond the normal Appendix'J, 10CFR50 cycle is'not warranted.

B1-142'6028-5079 = 1 of 6 e

.. 4 The following analysis reviews the Local Leakage Rate Test results performed since the Unit 1 March 1981 CILRT. This analysis is based on the repairs

-performed on the containment isolation valves. Each penetration is reviewed using the following criteria:

1. A leakage equivalent to the repair improvement achieved on each valve is calculated.

2. The leakage equivalent is the difference between the "as-found" and the "as-left" LLRT result.

3.- If a repair was not required, a zero leakage equivalent is assessed to the valve.

4. The leakage equivalent assessed to a penetration may be reduced due to the safety-related service of the penetration. Justifi-cation for-these penetrations is provided.

5. The net equivalent leakage for the penetration is the lowest of inside or outside valve grouping (e.g. , simulates minimum pathway leakage).

6. A summary sheet for each outage is included.

NOTE: There were no repairs made in 1981, thus no summary sheet is included.

CONCLUSION Based on a review of ' the 1982, 1983, and 1984 LLRTs, the following corrective action is recommended:

1. A review of the NAPS Work Control Program to prevent maintenance on a LLRT component after the LLRT unless post-walk testing is specified.

2.- A requirement in the LLRT procedure to provide capability for -

measuring seat- leakage : up to the equivalent of the maximum allowable leakage, La.

3. A ' review of test procedure for those penetrations that use the downstream leakage test method to require either a leakage test of the test boundary prior to the isolation valve test, or perform a combination makeup - test and downstream measurement (s) to account for all leakage.

4. A r* view of the test procedure to require a demonstration of where the leakage path is (e.g. inside or outside containment).

5. Initiation of a valve repair summary to feed a valve betterment program.

B1-1426028-5079 2 of 6

.- 4-1984 LLRT

SUMMARY

ANALYSIS Penetration , Inside Outside Net (scfh) Remarks

7- Safety Injection 0 NA 0 Motor on MOV-1867D was inoperable. As-found test not possible 9 Air Recirculation - >35 >35 Cooler Cooling Water 11 Air Recirculation -

>35 >35 Cooler Cooling-Water 614B Air Recirculation 0 0 Cooler Cooling Water 16 Component Cooling >35 0 0 17 Component Cooling >35 , 0 0 28B Letdown >35- 0 0 t est -ED 31 Containment >35 3.1 3.1 Atmosphere Cleanup 32 Wes Layup 0 2.1 0 40 ' Blowdown 5.59 0 0 46B Loop Fill >35 >35 O See Note 3' 53f Safety Injection - 0 0 66B Recirculation Spray 0 10.8 0' 0 71 Recirculation Spray 0 3.3 0 0 79 ' Service Water- -

.? >35 0 See Note 4

?83 Service Water -

0.42 0. See Note 4 89 Air Ejector 2.8' 0- 0

90. Purge.,. ->35 >35 >35 See Note 5 91 ' Purge >35 '>35 >35' See Note 5 100 lhet Layup' l' 4

. 0 0 4

-B1-1426028-5079 3 of 6 1

c.

... ja.

103 Reactor Cavity _ 0.5 0.5 0.5 Purification Penetration' Inside Outside Net (scfh) Remarks 108 Wet Layup 0 18.87 0 109 Containment 1.75 0 0

' Atmosphere Cleanup

-B1-1426028-5079 4 of 6

NOTES:

1. . Adding the net equivalent leakage of >211.99 scfh or >0.074091%/ day to the "As-found" Type A results of the September 1984 CILRT, indicates that the plant allowable of 0.1%/ day was exceeded.

2. Greater than 35 scfh represents the largest flowmeter used for the 1984 LLRT program'.

3. This line is from the charging pump header and is used to fill the loops. The charging pumps are used as the high head safety injection pumps. The chemical and volume control system valves, piping, and components have been designed to permit essentially zero leakage.

Periodic a,urveillance is performed to verify leakage is within specifications. Reference North Anna UFSAR Section 6.3.3.6, External Recirculation loop.

4. The Service Water piping to the Recirculation Spray Heat Exchangers.

5. The purge supply and exhaust valves consist of a T arrangement (e.g.

one valve inside and 2 valves in parallel outside). Each penetration is tested by pressurizing between the inside and outside valves. No attempt to quantify whether the leakage path is through the inside or outside valve is required by the LLRT procedure.

B1-1426028-5079 5 of 6

. u 1982 LLRT

SUMMARY

ANALYSIS Net Penetration Inside Outside (scfh) Remarks 2 Component Cooling -

>35 >35 4 Component Cooling -

>35 >35

- 7 Safety Injection 1.4 0 0 15 Charging >35 0 0 22 Safety Injection 0.8 0 0 28B Letdown >35 0 0

.39 Blowdown >35 >11.2 0 40' Blowdown 0 >11.2 0 41 Blowdown 0 >11.2 0 145 PG Water 0.1 0 0 55-Instrument Air 0.3 0 0 66B Recirculation Spray 0 >11.2 0 106B Safety Injection 0.4 0 0 114B Safety Injection 0.5 0 0 NOTE: The resulting net equivalent leakage of >70 scfh or

. 0.024465%/ day indicates that the plant allowable leakage rate limit of 0.1%/ day may have been exceeded, i

1983 LLRT

SUMMARY

ANALYSIS Net Penetration Inside Outside (scfh) Remarks E79 Service. Water -

>11 -0 See Note 1

- 80 Service Water -

>11 0 See Note 1 82 Service Water -

>11 0 See Note 1 83 Service Water -

>11 0 See Note 1 84 Service Water - -

>11 0 See Note 1 86 Service Water -

>11 0 See Note'1. j

.i Net equivalent leakage 0 NOTE

1. The full range of the 'rotometer used to test these' valves was 11 scfh.

' Reference. Note 4 on the 1984 LLRT. Summary Analysis.

1 B1-1426028-5079 6 of 6

'j

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