ML18143B509

Reactor Containment Bldg Integrated Leakage Rate Test Types A,B & C Periodic Test for June 1985

ML18143B509
Person / Time
Site:	Surry
Issue date:	06/30/1985
From:	STONE & WEBSTER ENGINEERING CORP.
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ML18143B508	List: ML18143B507 ML18143B509
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NUDOCS 8509160359
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'"'1'.'

REACTOR CONTAINMENT. BUILDING INTEGRATED LEAKAGE RA:TE TEST TYPES* A, B, AND C PERIODIC TE~T VIRGINIA.POWER SURRY:NUCLEAR PQ~R STATION

. 'UNIT 2 JUNE 1985

. **.. ,.f**

. . ;:.,l?repared ;by~--',\: *r:,:.

STONE & WEllSTER ENGINEERING CORPORATION BOSTON, _MA 8509160359 850910 PDR ADOCK 05000280

.P . PDR

-* - * * - *---- - - - - - * - -c*

TABLE OF CONTENTS Section Title LIST OF ATTACHMENTS iii REFERENCES iv 1 PURPOSE* 1-1 2

SUMMARY

. 2-1 2.1 TYPE A TEST 2-1 2.1.1 CILRT Betterment Program 2-3*

2.1.2 Corrective Action 2-3 2.1.3 Conclusion 2-4 2.2 LOCAL LEAKAGE RATE TESTS (TYPES BAND C) 2-4 3 TYPE A TEST 3.1-1 3.1 EDITED LOG OF EVENTS 3.1-1..

3.2 GENERAL TEST DESCRIPTION 3. 2-1.

3.2.1 Prerequisites 3.2-1 3.2.2 Equipment and Instrumentation 3.2-2 3.2.3 DataAcquisition System 3.2-1 _

3.2.4 Data Resolution System *3.2-3 3.3 TEST RESULTS 3.3-1 3.3.1 Presentation of Test Results 3.3-1 3.3.2 59.7 psia CILRT Results 3.3-1 3.3.2.1 Mass Point* Analysis 3.3-1 3.3.2.2 Total Time Analysis 3.3-2 3.3.2.3 Supplemental Test Results 3.3-3 3.3.2.4 Types Band C Penetration Leakage 3.3-3 4 LOCAL LEAKAGE RATE.TESTS (TYPES BAND C) 4-1 ii

LIST OF ATTACHMENTS Attachment Title 2.lA Graph 1 - Containment Mass vs. Time 3.2A Site Meteorology 3.2B Instrumentation 3.2C CILRT Temperature Detector Locations - Plan View 3.2D CILRT Temperature Detector Locations - Profile View 3.2E CILRT Dewpoint Temperature Sensor Locations -

Plan View 3.2F CILRT Dewpoint Temperature Sensor Locations -

Profile View 3.3A CILRT Input Variables 3.3B CILRT Absolute Method - Mass Point Analysis Test Results 3.3C CILRT Absolute Method - Total Time Analysis Test Results Graph 2 - Containment Mass vs. Time 3.3E Graph 3 - Leakage Rate and UCL vs. Time, Mass Point Analysis 3.3F Graph 4 - Leakage Rate and UCL vs. Time, Total Time Analysis 3.3G Superimposed Leakage Verification Test Input Variables 3.3H Superimposed Leakage Verification Test Absolute Method - Mass Point Analysis Test Results 3.3I Superimposed Leakage Verification Test Absolute Method - Total Time Analysis Test Results 4A 1985 Local Leakage Rate Test Penetration Data 4B 1985 "As-Found" LLRT Leakage Summary Analysis iii

REFERENCES

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

2. 2-PT-16. 3, Reactor Containment Building Integrated Leak Rate Test (Type* "A").

3. ANSI .N45.4, American National Standard Leakage-Rate Testing of Containment Structures for Nuclear Reactors, March 16, ,1972.

4. ANSI/ANS-56.8, C~ntainment System Leakage Testing Requirements, February 19, 1981 *

5. Bechtel Corporation's Testing Criteria for Integrated Leakage Rate Testing of Primary Containment Structures for Nuclear Power Plants, BN-TOP-1 Revision 1, November 1, 1972.

1This document used only as a guideline and any reference to said document in no way implies compliance, iv

SECTION 1 PURPOSE The purpose of this report is to present a description and analysis of the June 1985, Periodic Type A Containment Integrated Leakage Rate Test (CILRT), and summary of the Periodic Types Band C Local Leakage Rate Tests (LLRT's) conducted since September 1983 on Virginia Power's Surry Power Station, Unit No. 2.

This report is submitted as required by lOCFRSO, Appendix J, Paragraph V.B. (Reference 1).

1-1

SECTION 2

SUMMARY

2.1 TYPE A TEST On June 8, 1985, pressurization was started at 0145 hours0.00168 days <br />0.0403 hours <br />2.397487e-4 weeks <br />5.51725e-5 months <br />. A fairly constant rate of 4 psig per hour was maintained throughout the pressurization period. The compressors were secured at 1338 hours0.0155 days <br />0.372 hours <br />0.00221 weeks <br />5.09109e-4 months <br /> on June 8, 1985, with a peak instantaneous pressure of 61.557 psia. During the containment pressurization period, the "C" containment air recirculation fan tripped on high current overload at 1050 hours0.0122 days <br />0.292 hours <br />0.00174 weeks <br />3.99525e-4 months <br />.

At approximately 1750 hours0.0203 days <br />0.486 hours <br />0.00289 weeks <br />6.65875e-4 months <br />, the average hourly containment temperature satisfied the procedural thermal stabilization criteria. *All other containment parameters appeared stabilized at 0100 hours0.00116 days <br />0.0278 hours <br />1.653439e-4 weeks <br />3.805e-5 months <br /> on June 9, 1985.

In order to identify leakage paths, extensive investigations of all penetration areas were conducted throughout the test. These searches revealed only minor packing and body to bonnet leaks.

Observations of the volume-weighted dewpoint temperature trend data, of the individual sensor trend data, and of the moisture sensor panel meters, indicated that MT-LM-200-7 had a contaminated mirror surface.

The sensor was successfully rebalanced at approximately 1100 hours0.0127 days <br />0.306 hours <br />0.00182 weeks <br />4.1855e-4 months <br /> on.

June 9, 1985. The volume-weighted dewpoint temperature at 1040 and 1100 hours0.0127 days <br />0.306 hours <br />0.00182 weeks <br />4.1855e-4 months <br /> (see Attachment 3. 3A dewpoint temperature for t = 9. 333 and t =

10.000) were artificially high, which resulted in an artificially low containment mass. Rather that calculate an adjusted volume-weighted dewpoint temperature for these two times, which would provide a lower leakage rate, all of the MT-LM-200-7 dewpoint data is used for the official test results (see Attachments 3.3B and 3.3C)*.

During the CILRT, it was noted that the CILRT program was not always running at 10 minute intervals. The Westinghouse Prodac P250 10-minute average program was determining 10-minutes by counting the number of accumulated scans that should have been collected. The time skewing was

• random in nature. This time skewing was attributed to the yariable

• system demand. This was conservative in that the reported leakage rate based on the nominal twenty minute duration between data sets would be greater than the actual leakage rate based on the actual time between data sets.

2-1

The Type A CILRT was successfully completed with the Nuclear Regulatory Commission's (NRC) concurrence at 1430 hours0.0166 days <br />0.397 hours <br />0.00236 weeks <br />5.44115e-4 months <br /> on June 9, 1985 without any penetrations having to be repaired or isolated during the Type A test period. A superimposed leakage verification test was successfully completed from 1850 hours0.0214 days <br />0.514 hours <br />0.00306 weeks <br />7.03925e-4 months <br /> on June 9, 1985 to 0500 hours0.00579 days <br />0.139 hours <br />8.267196e-4 weeks <br />1.9025e-4 months <br /> on June 10, 1985.

Depressurization of the containment began at 0830 hours0.00961 days <br />0.231 hours <br />0.00137 weeks <br />3.15815e-4 months <br /> on June 10, 1985 and was completed that evening.

2-2

2.1.1 CILRT Betterment Program The following preparation measures were taken to improve the CILRT/LLRT programs and to ensure a successful CILRT.

a) Steam generators were tested and repaired as required to ensure their integrity.

b) Utilization of the LLRT makeup air test method where feasible.

c) Various leakage rate test procedures were thoroughly reviewed and revised.

d) Tighter leakage limits were placed on containment isolation valves.

e) Various containment isolation valves were reworked or replaced as described in Attachment 4A.

-f) Daily monitoring of maintenance activities.

g) Developed an extensive leakage investigation plan to be utilized throughout the test.

h) Established a log of pertinent hourly items to be recorded during the test performance (i.e Component Cooling Water and Residual Heat Removal System temperatures, Electrical penetration pressures, Steam Generator pressures, etc.).

2, 1.2 Corrective Action The following corrective actions will be taken:

a) The plant computer CILRT program time skewing will be evaluated for potential software modification.

b) New dewpoint sensors will be purchased and installed for the next CILRT, The backup quartz manometer loop components that malfunctioned will be repaired. or repla*ced.

2-3

2 .1. 3 Conclusion The June 1985 Surry Power Station Unit No. 2 Type A Test is considered a successful test in that it demonstrated the leak-tightness of the containment boundary. The measured leakage rates were well within the plant's maximum allowable leakage rate. The success of this test can be contributed to the plant improvements as previously discussed. Based on these improvements, the upgrades made following the 1983 test, and the success of both the 1983 and the 1985 Type A tests, a letter will be forthcoming requesting that Surry Power Station Unit No. 2 resume a Type A retest schedule as specified by lOCFRSO, Appendix J. (See paragraphs 111.A.6.(b) and 111.D of Reference 1).

2.2 LOCAL LEAKAGE RATE TESTS (TYPES BAND C)

The Local Leakage Rate Tests of containment isolation valves and other containment penetrations were conducted as required by the methods described in Virginia Power's station surveillance procedures.

Section 4 of this report summarizes the data for the 1985 surveillance period of Local Leakage Rate Tests conducted since the last Type A Test in accordance with Appendix J, lOCFRSO, Paragraph V.B. Also contained in Section 4 of this report, is an "AS-FOUND" LLRT leakage summary analysis for the 1985 surveillance period of LLRT's.

2-4

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546800 I I I I I -I lS} lS} lS} lS} lS} lS} lS} lS} lS} lS} lS} lS} lS}

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lS} lS} lS} lS} lS} lS} lS} lS} ..-t ..-t ..-t ..-t ..-t 9 JUN 1985 TIME - HOURS ATTACHMENT 2. lA MASS VS. TIME SURRY UNIT 2 INTEGRATED LEAKAGE RATE TEST

SECTION 3 TYPE A TEST 3.1 EDIT.ED LOG OF EVENTS This log was edited from the Official Log of Events June 7, 1985 1800 - Commenced recording site meteorology data.

1815 - Commenced final containment inspection.

2010 - Completed final containment inspection, no abnormalities observed.

June 8, 1985 0030 - Completed the local leakage rate test on the personnel hatch.

0130 - Re-intialized the Westinghouse Prodac P250 computer.

0145 - Commenced containment pressurization.

0200 - Notified the NRC that pressurization had begun.

0215 - Computer printers stopped.

0300 - Computer restored.

0405 - Containment pressure 25.0 psia.

Commenced the gross leakage investigation.

0500 - Completed the gross leakage investigation.

No gross leaks revealed.

0830 - Commenced an extensive leakage investigation.

1050 - Lost "C" containment air recirculation fan on high current overload.

1115 - Completed extensive leakage investigation. Observed minor packing leaks on penetrations 15, 47, 53, and 57b.

1338 - Secured containment pressurization with a peak instantaneous pressure of 61:557 psia.

3.1-1

1339 - Re-initialized the Westinghouse Prodac P250 computer.

1350 - Commenced containment stabilization period.

1750 - Satisfied thermal stabilization criteria.

2250 - Observed minor packing leaks and/or body to bonnet leaks on penetrations 33, 43, 44, and 58.

2310 - Removed failed Dewpoint Analyzer No. 10 from program.

June 9, 1985 0100 - Completed stabilization, CILRT started; Notified the NRC.

0150 - Initiated walkdown of Auxiliary Building basement penetration area.

0205 - Initiated walkdown of Fuel Building and Safeguard Building penetration areas.

0230 - Completed walkdown of Fuel Building and Safeguard Building penetration areas., Same minor packing leaks observed.

0320 - Completed walkdown of Auxiliary Building basement penetration area. Minor packing leaks observed.

1100 - Rebalanced Dewpoint Analyzer No. 7 (MT-LM-200-7).

1430 - CILRT completed. Met with the NRC to review acceptance criteria compliance. All criteria met. Health Physics notified of test completion.

1646 - Commenced superimposed leakage verification test stabilization period.

1850 - Commenced superimposed leakage verification test.

June 10, 1985 0500 - Superimposed leakage verification test completed. Health Physics notified of test completion.

0830 - Commenced containment depressurization.

3.1-2

3.2 GENERAL TEST DESCRIPTION 3.2.1 Prerequisites In accordance with the Surry Power Station Unit No. 2 CILRT procedure, 2-PT-16. 3 (Reference 2), the following is a listing of the pertinent prerequisites that were completed and documented prior to containment pressurization:

a. Controlled access plan in effect.

b. General inspection of the accessible interior and exterior surfaces of* the containment structures and components completed.

c. All required Types Band C local leakage rate testing completed.

d. All test instrumentation calibrated or functionally verified within 6 months of the test.

e. All required system valve line-ups completed.

f. Component cooling and chilled water systems are operable.

g. Plant computers are operational and programmed for the CILRT.

h. The Official Log of Events established and available prior to comrnencement of the test.

i. Site meteorology data recorded during the performance of the CILRT (Attachment 3.2A).

j. Temporary air compressors and test skid checked out and available for pressurization.

k. All equipment and instrumentation, that could be damaged by test pressure, removed or protected.

1. Containment air recirculation fans adjusted for continuous operation at test pressure (45 psig).

3.2-1

---

,--------

3.2.2 Equipment and Instrumentation Pressurization of the containment was achieved by the utilization of -

eight temporary air compressors.

Air was piped through two aftercoolers in parallel and a refrigerated _

air dryer. The system included adequate instrumentation and valving to maintain proper monitoring and control of the compressed air quality throughout the pressurization sequence. The total capacity of the pressurization system as installed was rated at approximately 9,900 standard cubic feet per minute (SCFM).

The various containment parameters required to calculate containment leakage during the test were monitored using instrumentation which consisted of multiple resistance temperature detectors (RTD' s), chilled mirror dew point indicators, and an absolute pressure quartz manometer.

Pertinent data for the test instrumentation is listed in Attachment 3.2B, and the general locations of the temperature and moisture sensors are shown in Attachments 3.2C through 3.2F.

A pair of calibrated rotometers were used to perform the superimposed leakage verification test. All test instrumentation with the exception of that used for the superimposed leakage verification test was monitored by the plant computer for data acquisition and averaging.

3.2.3 _Data Acquisition System The Surry Power -_ Station Unit No. 2 CILRT utilized the station's.

Westinghouse Prodac P25_0 to scan, log, average, and analyze data received from the containment instrumentation.

The P250 analog scan package *reads all the analog inputs in a preestablished manner, converts these readings into engineering units, and then stores these values for use by the plant operators and by the plant application programs.

For the CILRT, the P250 Plant Computer monitored the following instrumentation:

~ Scan Rate (sec) 22 RTD's 20 5 chilled mirrors 20 1 quartz manometers 2 Instantaneous values of the CILRT instruments were recorded every 5 minutes during the test period, using the P250 digital trend function on the operator's console.

3.2-2

A 10-minute time average of the readings, calculated by the P250 Average and Integrate (A&I) package, was used as input in the plant computer CILRT programs.

The plant computer CILRT program consists of ILRTDATA, which runs every 10 minutes, collects A&I data for all the instrumentation, performs sensor validity checks, and calculates weighted average dew point temperature, vapor pressure, we*ighted average containment temperature,.

and containment air mass.

3.2.4 Data Resolution System After the appropriate data had been acquired and averaged, utilizing the P250 plant computer system, the reduced parameters were manually input

• into Virginia Power's Richmond Computer System for leakage rate calculations.

For the Surry Power Station Unit No. 2 CILRT, both the absolute Method of Mass Point Analysis and Absolute Method of Total Time Analysis were used to determine the leakage rate.

Absolute Method of Mass Point Analysis The Absolute Method of Mass Point Analysis consists of calculating the air mass within the containment structure, over the test period, using pressure, *temperature, and dew point observations made during the CILRT.

The air m~ss is computed using the ideal gas law as follows:

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

RT where:

M = air mass, lbm p = total pressure, psia Pv = average vapor pressure, psia 0

R = 53.35 ft-lbf/lbm R (for air)

T =

• average containment temperature, OR 6 3 V = containment free volume, 1.8 x 10 ft The leakage rate is then determined by plotting the air mass as a function of time, using a least-squares fit to determine the slope, A = dM/ dT. The leakage rate is expressed as a percentage of the air mass lost in 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> 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 of such that the leakage out of the containment is positive and the units are in percent/day.

3.2-3

The air mass is calculated and the result is correlated as a function of time by means of a least-squares curve fit of the form:

M =At+ B (Eq. 3)

The slope A and the y-intercept B are then used in Equation 2 to determine the leakage rate.

A confidence interval is calculated using a Student's T distribution.

The sum of the leakage rate and the confidence interval is the upper confidence limit (UCL-MP).

Absolute Method of Total Time Analysis The Absolute Method of Total Time Analysis consists of calculating air lost from the containment, using pressure, temperature, and dew point observations made during the CILRT.

The containment air mass is computed using Equation 1. The measured leakage rate at any time (t) is then <let.ermined by subtracting the mass at that time (Mt) from the initial mass (Mi) and dividing by the initial mass. The measured leakage rate is expressed as a percentage of containment mass lost in 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> or symbolically:

Measured Leakage Rate= Mi - Mt (2400) (Eq. 4)

Mi (6t)

The sign convention is such that leakage out of the containment is positive and the units are in percent/day.

The estimated leakage rate is then determined by plotting the measured leakage rate as a function of time and then performing a: least-squares curve fit of the measured leakage rate values as follows:

Estimated Leakage Rate= At+ B (Eq. 5) where A is the slope and B is the y-intercept of the least-squares curve.

The confidence interval is determined in accordance with the equations of Reference 5. The sum of the estimated leakage rate and the confidence interval is the upper confidence limit - total time (UCL-TT).

This analysis method was used in conjunction with procedure 2-PT-16. 3 (Reference 2).

3.2-4

ATTACHMENT 3.2A SITE METEOROLOGY Drybulb Barometric Temperature Pressure Date Time (OF) (in. Hg.)

June 7, 1985 1800 66.2 30.07 1900 66.2 30.06 2000 64.4 30.06 2100 64.4 30.04 2200 64.4 30.05 2300 64.4 30.05 2400 64.4 30.03 June 8; 1985 0100 64.4 30.01 0200 64.4 30.01 0300 64.4 29.95 0400 64.4 29.95 0500 64.4 30.01 0600 64.4 29.95 0700 64.4 29.95 0800 68.9 29.93 0900 71. 6 29.91 1000 73.4- 29.91 1100 75.2 29.89 1200 75.2 29.90 1300 75.2 29.90 1400 75.2 29.89 1500 77 .o 29.89 1600 78.0 29.90 1700 78.0 29.90 1800 78.0 29.91 1900 77. 0 29.94 2000 74.0 29.95 2100 68.0 29.96 2200 68.0 29. 96 2300 64.4 29.96 2400 66.2 29.96 June 9, 1985 0100 68.0 29.94 0200 62.6 29.96 0300 62.6 29.95 0400 62.6 29.93 0500 66.2 29.95 0600 66.2 29.95 0700 66.2 29.97 1 of 2

ATTACHMENT 3.2A (Can't)

SITE METEOROLOGY Drybulb Barometric Temperature Pressure Date Time (OF) (in. Hg,)

0800 66.2 29. 77 0900 72.5 29.98 1000 76.1 29.94 1100 77. 9 29,91 1200 81.5 29.92 1300 83.2 29.91 1400 84.2 29.91 1500 84.2 29.90 1600 84.2 29.90 1700 85.5 29.90 1800 84.2 29.93 1900 84.2 29.90 2000 80.6 29.90 2100 77.0 29.91 2200 77 .o 29.91 2300 76.0 29.94 2400 77 .o 29,94 June 10, 1985 0100 77 .o 29.93 0200 75.2 29.91 0300 73.4 29.90 0400 73.4 29.90 0500 73.4 29.91 2- of 2

ATTACHMENT 3.2B INSTRUMENTATION The following instrumentation w~s

• calibrated and/or functionally verified within 6 months prior to the performance of this test and in accqrdance with 10CFR50, Appendix J.

Note: Instruments that were assigned a zero weight factor were not used in the leakage rate calculations.

Weight Computer Instrument Factor Point Range Zone Accuracy Sensitivity RTD-LM-200-1 0.02683

• TlOOOA 55-105°F F +0.1°F +0,09°F RTD-LM-200-2 0.02322 TlOOlA 55-105°F F +0.1°F +0.09°F RTD-LM-200-3 0.02427 Tl002A 55-105°F F +0.1°F +0.09°F RTD-LM-200-4 0.01820 Tl003A 55-105°F E +0.1°F +0.09°F RTD-LM-200-5 0,08884 Tl004A 55-105°F B +0.1°F +0.09°F RTD-LM-200-6 0.08884 T1005A 55-105°F B +0.1°F +0.09°F RTD-LM-200-7 0.08884 Tl006A 55-105°F C +0.1°F +0.09°F RTD-LM-200-8 0.08884 T1007A 55-105°F C +0.1°F +0,09°F RTD-LM-200-9 0.04975 Tl008A 55-105°F A +0.1°F +0,09°F RTD-LM-200-10 0.04975 Tl009A 55-105°F A +0.1°F +0.09°F Page 1 of 3

ATTACHMENT 3.2B (Con't)

INSTRUMENTATION Weight Computer Instrument Factor Point Range Zone Accuracy

• Sensitivity RTD-LM-200-11 0.04975 TlOOlOA 55-105°F A +0.1°F +0.09°F RTD-LM-200-12 0.02460 TlOllA 55-105°F D +0.1°F +0.09°F RTD-LM-200-13 0.02460 Tl012A 55-105°F D +0.1°F +o.09°F RTD-LM-200-14 0.02460 T1013A 55-105°F E +0.1°F +0.09°F RTD-LM-200-15 0.02460 . T4024A 55-105°F E +0.1°F +0.09°F RTD-LM-200-16 0.04766 T4025A 55-105°F I +0.1°F +0.09°F RTD-LM-200-17 0.04766 T4026A 55-105°F I +0.1°F +o.09°F RTD-LM-200-18 0.04766 T4027A 55-105°F I +0.1°F +0.09°F RTD-LM-200-21 0.03608 T4009A 55-105°F H +0.1°F +0.09°F RTD-LM-200-22 0. 03961 T4020A 55-105°F H +0.1°F +0.09°F RTD-LM-200-23 0.01782 T4021A 55-105°F G +0.1°F +0.09°F RTD-LM-200-24 0.06800 T4022A .55-105°F G +0.1°F +0.09°F Page 2 of 3

ATTACHMENT 3.2B (Can't)

INSTRUMENTATION We:j..ght Computer Instrument Factor Point Range Zone Accuracy Sensitivity MT-LM-200-6 0.00000 T4039A -40 to +200°F K +0.4°F +0.05°F MT-LM-200-7 0.28128 T4040A -40 to +200°F K +0.4°F +0.05°F MT-LM-200-8 0.35938 T4041A -40 to +200°F L +0.4°F +0.05°F MT-LM-200-9 0.35939 T4042A -40 to +200°F L +0.4°F +0.05°F MT-LM-200-10 0.00000 T4043A -40 to +200°F L +0.4°F +0.05°F PI-LM-206 1.0 U0962 0-100 psia +0.030 psia +0.001%

PI-LM-207 0.0 U0963 0-100 psia +0.030 psia +0.001%

• Roto_meter N/A N/A 0-100% N/A +2%F.S. +1%F.S.

Rotometer N/A N/A 0-1.00% N/A +2%F.S. +1%F.S.

• Page 3 of 3

• 3.3 3.3.1 TEST RESULTS Presentation of Test Results The test data for the June 1985 CILRT is based on a 13.333 hour0.00385 days <br />0.0925 hours <br />5.505952e-4 weeks <br />1.267065e-4 months <br /> period starting at 1430 hours0.0166 days <br />0.397 hours <br />0.00236 weeks <br />5.44115e-4 months <br /> on June 9, 1985. The final test results were determined using Virginia Power's Richmond CILRT computer program. The reduced input data, Mass Point Analysis test results, Total Time Analysis test results, and representative graphs are contained in Attachments 3.3A through 3.31.

Both the Mass Point and Total Time Analysis test results for the CILRT satisfied the procedural acceptance criteria.

The Type A test instrumentation was verified by the superimposed leakage verification test method. Both the Mass Point and Total Time Analysis test results for the superimposed leakage verification test satisfied the procedural acceptance criteria.

3.3.2 59.7 psia CILRT Results The CILRT was conducted in accordance with Section 5. 0 of the Surry Power Station Unit No. 2 surveillance test procedure 2-PT,-16. 3. The results for the CILRT and for the supplemental test are shown below.

3.3.2.1 Mass Point Analysis Item (Percent/Day)

1. Lam, leakage rate calculated 0.033978

2. Confidence level 0.005452

3. UCL-MP Lam leakage rate plus 0.039430 confidence level (1 & 2)

4. Correction for Type C leakage 0.000324 (See Section 3.3.2.4)

5. Total reported Type A leakage rate 0.039754 Results were within the acceptable limit of 0.075 percent/day.

3.3-1

~-----------~~-

3.3.2.2 Total Time Analysis

• 1.

2.

Item Lam, leakage rate estimated Confidence level (Percent/Day) 0.031148 0.029551

3. UCL-TT Lam leakage rate plus 0.060699 confidence level (1 & 2)

4. Correction for Type C leakage 0.000324 (See Section 3.3.2.4)

5. *Total reported Type A leakage rate 0. 061023 Results were within the acceptable limit of 0.075 percent/day.

3.3.2.3 Supplemental Test Results The Supplemental Verification Test was performed using the Superimposed Leakage Verification Test Method in accordance with Attachment 7.16 of surv_eillance test procedure 2-PT-16. 3. The results for the superimposed leakage verification test are shown below.

1. The Superimposed Leakage Verification Test is acceptable provided L falls within the following range:

C (L am + Lo - 0. 25L a ) < <Lc (Lam + Lo + 0. 25 La )

where: L = Type A calculated leakage (computer) am (Lam-MP=0.033978%/day)

(Lam-TT=0.031148%/day)

L = Superimposed leakage rate developed from rotometer 0

(Lo=0.105568%/day)

L = Maximum allowable leakage rate a

(La=0.1%/day)

L = Composite leakage (computer)

C (Lc-MP=0.130737%/day)

(Lc-TT=0.124770%/day)

a. Mass Point (0.033978 + 0.105568 - 0.025)<0.130737<(0.033978 + 0.105568 + 0.025)

(0 .114546) < 0. 130737 < (0 .164546) 3.3-2

b. Total Time (0.031148 + 0.105568 - 0.025) ,(0.124770 <: (0.031148 + 0.105568 + 0.025) co.111716) <:0.124770 <:co.161716)

The Superimposed Leakage Verification Test met the requirements set forth in References 4 and 5.

3.3.2.4 Types Band C Penetration Leakage Types Band C penetration leakage to be added since these penetrations could not be vented and drained.

The leakage assigned is the Types Band C recorded value for minimum pathway analysis.

Leakage Penetration No. Description (SCFH) 19 Charging a.a 20 Safety Injection o.o 24 Residual Heat Removal a.a 28 Chemical and Volume Control o. 72 32 Gaseous Waste a.a 38 Aerated Drain 0.145 45 Primary Grade Water o.o 50 Safety Injection 0.085 55d Leakage Monitoring a.a 57c Leakage Monitoring a.a 92 Gaseous Waste a.a

93. Gaseous Waste o.o 97b Sample System 0.0185 97c Leakage Monitoring a.a 100 Gaseous Waste o.o 101 Fire Protection o.o 105b Leakage Monitoring o.o 106 Safety Injection o.o Total Types Band C leakage 0.9685 SCFH Total Types Band C Leakage 0.000324 percent/day 3.3-3

ATTACHMENT 3.3A

• CONTAINMENT INTEGRATED LEAKAGE RATE TEST FROM 0100 TO 1430 HOURS ON 6-9-85 INPUT VARIABLES Absolute Vapor Absolute Time Pressure De~oint Pressure Temperature (hrs) (psia) ( F) (psia) (OR) a.a 61. 316 77 .38 0.4650 540.56 0.333 61.316 77 .42 0.4656 540.56 0.666 61.314 77.43 0.4658 540.55 1.000 61.310 77.46 0.4662 540.52 1.333 61.305 77 .45 0.4661 540.48 1.666 61.301 77.50 0 *. 4668 540.46

1. 993 61. 298 77.48 0.4665 540.44 2.333 61.295 77.48 0.4665 540.42

2. 66fr 61. 291 77.49. 0.4667 540.39 3.000 61.287 77.48 0.4665 540.35 3.333 61. 286

• 77.50 0.4668 540.33 3.666 61.286 77.54 0.4675 540.33 4.000 61.287 77.49 0.4667 540.34 4.333 61. 285 77 .51 0.4670 540.33 4.666 61. 282 77.49 0.4667 540.31 5.000 61. 277 77 .48 0.4665 540.27 5.333 61.273 77 .so 0.4668 540.24 5.666 61. 271 77 .48 0.4665 540.22 6.000 61.299 77.47 0.4664 540.21 6.333 61.267 77.49 0.4667 540.20 6.666 61.266 77 .48 0.4665 540.19 7.000 61.265 77 .48 0.4665 540.19 7.333 61.265 77.45 0.4661 540.18

7. 66fr 61.265 77.52 0.4672 540.18

• 3.000 61. 264 77 .so 0.4668 540.18 8.333 61.264 77.55 0.4676 540.18 8.666 61.263 77 .51 0.4670 540.18 9.000 61. 263 77.51 0.4670 540.18 9.333 61.265 77.55 0.4676 540.20 9.666 61. 268 77.83 o. 4720 540.23 10.000 61. 273 77.83 0.4720 540.26 10.333 61. 278 77.66 0.4693 540.31 10.666 61.283 77.67 0.4695 540.35

11. 000 61.290 77. 70 0.4699 540.40

11. 333 61. 299 77. 74 0.4706 540.47

11. 666 61.307 77. 73 0.4704 540.54 12.000 61. 318 77.79 0.4713 540.62*

12.333 61.329 77. 79 0. 4 713 540. 72 12.666 61.341 77 .81 0.4716 540.82 13.000 61.353 77.86 0.4724 540. 92 13.333 61.366 77.92 0.4734 541.03.

1 of 1

ATTACHMENT 3

• 3B CONTAINMENT INTEGRATED LEAKAGE RATE TEST FROM 0100 TO 1430 HOURS ON 6-9-85 ABSOLUTE TEST METHOD - MASS POINT ANALYSIS Time Mass Leakage Confidence UCL (hrs) (lbm) (pct/day) (pct/day) (:ect/day) a.a 546926.41 a.a o.o o.o 0.333 546920.88 o.o o.o a.a 0.666 546911. 64 0.097329 0.120828 0.218157 1.000 546901.89 0.109041 o. 027189 0.136230 1.333 546898.80 0.097716 0.019870 0.117586 1.666 546876.15 0.123130 0.033434 0.156564

1. 993 546872.19 0.124849 0.022482 0.147331 2.333 546865.46 0.122334 0.016387 0.138721 2.-666 546858.47 0.119147 0.012850 0.131997 3.000 546864.37 0.106762 0.016657 0.123419 3.333 546872.85 0.090089 0.022150 0.112239 3.666 546867.30 0.079826 o. 021149 0.100975 4.000 546873.11 0.068464 0.021266 0.089730 4.333 546862.47 0. 0633 72, 0.018816 0.082189 4.666 546858.51 0.059784 0.016602 0.076386 5.000 546855.42 0.056959 0.014721 0.071680 5.333 546847.04 0.056067 0.012953* 0.069021 5.666 546852.08 0.053298 0.011798 0.065095 6.000 546845.60 0.051818 0.010619 0.062437 6.333 546834.96 0.052001 0.009525 0.061526 6.666 546837.47 0.051032 0. 00864"6 0.059678 7.000 546828.48 0.051102 0.007838 0.058940 7.333 546842.76 0.048557 0.007573 0.056131 7.666 546833.05 0.047390 0.007023- o. 054413 8.000 546826.84 0.046799 0.006474 0.053273 8.333 546819.89 0.046716 0.005965 0.052682 8.666 546816.45 0.046639 0.005515 0.052154 9.000 546816.45 0.046232 0.005128 0.051360 9.333 546808.64 0.046294 0.004768 0.051062 9.666 546766.20 0.049651 0.005534 0.055184 10.000 546780.80 0.050935 0.005321 0.056256 10.333 546798.91 0.050349 0.005016 0.055365 10.666 546802.00 0.049378 0.004802

• 0.054180 11.000 546810.16 0.047777 0.004779 0.052556 11.333 546814.66 0.045926 0.004851 0.050777

11. 666 546817.15 0.044013 0.004944 0.048957 12.000 546826.71 0.041668 0.005203 0.046871 12.333 546824.42 0.039628 o. 005311 0.044939 12.666 547828.31 0.037537 0.005432 0.042969 13.000 546828.01 0.035621 0.005483 o. 041104

13. 333 546825.17 0.033978 0.005452 0.039430 1 of 1

ATTACHMENT 3.3C

• CONTAINMENT INTEGRATED LEAKAGE RATE TEST FROM 0100 TO 1430 HOURS ON 6-9-85 ABSOLUTE TEST METHOD - TOTAL TIME ANALYSIS Time Mass Measured Leakage Estimate Leakage Confidence UCL (hrs) (lbm) (pct/day) (pct/day) (pct/daz) (pct/day) 0.0 546926.41 0.0 o.o o.o o.o 0.333 546920.88 0. 072872 o.o o.o o.o 0.666 546911. 64 0.097329 o.o 0.0 o.o 1.000 546901.89 0.107619 0.109985 0.056247 0.166232 1.333 546898.80 0.090894 0.101831 0.073821 0.175652 1.666 546876.15 0.132382 0 .122727 0. 057709 0.180436 1.993 546872 .19 0.119378 0.126271 0.046533 0.172804 2.333 546865.46 O.114643 0.125869 0.043620 0.169489 2.666 546858.47 0.111829 0.124050 0.041931 0.165981 3.000 546864.37 0.090745 0.114682 0.048804 0.163485 3.333 546872.85 0.070518 0.101127 0.056694 0.156821 3.666 546867.30 0.070758 0.091507 0.056293 0.147800 4.000 546873 .11 0. 058477 0.080832 0.056349 0.137181 4.333 546862.47 0.064755 0.074577 0.053373 0.127951 4.666 546858.51 0.063857 0.069607 0.050465 0.120072 5.000 546855.42 0.062303 0.065408 0.047846 o. 113253 5.333 546847.04 0.065308 0.062835 0.045558 0.108393 5.666 546852.08 0. 057572 0.059165 0.043537 0.102703 6.000 546845.60 0 .059105 0.056543 0.041774 0.098317 6.333 546834.96 O. 063369, 0.055283 0.040483 0.095766 6.666 546837.47 0.058547 0.053400 0.039150 0.092550 7.000 546828.48 0.061392 O.D52371 0.038186 0.090557 7.333 546842.76 0.050058 0.049633 0.036976 0.086609 7.666 546833.05 0.053440 0.047895 0.035992 0.083886 8.000 546826.84 0.054620 0.046625 0.035216 0.081841 8.333 546819.89 0.056093 0.045801 0.034655 0.080456 8.666 546816.45 0.055680 0.045065 0.034162 0.079226 9.000 546816.45 0.053613 0.044164 0.033627 0.077792 9.333 546808.64 0.055373 0.043654 0.033285 0.076939 9.666 546766.20 0.072734 0.045511 0.034774 0.080285 10.000 546780.80 0.063896 0.046065 0.034921 0.080986 10.333 546798.91 0.054146 0.045393 0.034407 0.079800 10.666 546802.00 0.051886 0.044464 0.033843 0.078307

11. 000 546810 .16 0. 046377 0.043093 0.033224 0.076317

11. 333 546814.66 0. 043271 0.041537 0.032619 0.074156

11. 666 546817.15 0. 041100 0.039917 0.032042 0.071959 12.000 546826.71 0.036460 0.037971 0.031496 0.069467 12.333 546824.42 0.036291 0.036213 0.030972 o~ 06 7184 12.666 546828.31 0.033986 0.034399 o. 030472 o. 064871 13.000 546828.01 0.033216 0.032683 0.029996 0.062679

13. 333 546825.17 0.033321 o. 031148 0.029551 0.060699 1 of 1

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9 JUN 1985 ATTACHMENT 3.3F TIME - HOURS LAM & UCL VS. TIME SURRY UNIT 2 INTEGRATED LEAKAGE RATE TEST

ATTACHMENT 3.3G CONTAINMENT INTEGRATED LEAKAGE RATE TEST SUPERIMPOSED LEAKAGE VERIFICATION TEST FROM 1850 HOURS_ ON 6-9-85 TO 0500 HOURS ON 6-10-85 INPUT VARIABLES Absolute Vapor Absolute Time Pressure De~oint Pressure Temperature (hrs) (psia) ( F) (psia) (OR) o.o 61.460 78.49 0,4823 541. 92 0.333 61. 463 78.49 0.4823 541.95 0.666 61.467 78.51 0.4827 542.00 1.000 61.472 7~.60 0.4841 542.03 1.333 61. 4 76 78.59 0.4839 542.09 1.666 61.481 78.60 0.4841 542.13 2.000 61.485 78.61 0.4842 542.17 2.333 61.489 78.65 0.4849 542.21 2.666 61.493 78.66 0.4850 542.25 3.000 61. 497 78.68 0.4854 542 *. 28 3.333 61.502 78.73 0.4852 543.33 3.666 61.506. 78.78 0.4870 542.36 4.000 61. 510 78.80 0.4873 542.41 4.333 61.514 78.83 0.4878 542.45 4.666 61.519 78.79 o. 4871 542.50 5.000 61.524 78.89 0.4887 542.55 5.333 61. 529 78.87 0.4884 542.59 5.666 61. 534 78.94 0.4895 542.65 6.000 61.539 78.93 0.4894 542.70 6.333 61.544 78.97 0.4900 542.74 6.666 61.548 79.00 0.4905 542.79 7.000 61.552 79.02 0.4908 542.83 7.333 61.556 79.08 0.4918 542.87 7.666 61.559 79.06 0.4915 542.91 8.000 61.562 79.10 0.4921 542.93 8.333 61.565 79.12 0.4924 542.97 8,666 61.568 79.16 0.4931 543.01 9.000 61.534 79.01 0.4907 542.87 9.333 61. 515 79.03 0.4910 542.64 9.666 61. 515 79.03 0.4910 542.61 1 of 1

ATTACHMENT 3.3H CONTAINMENT INTEGRATED LEAKAGE RATE TEST SUPERIMPOSED LEAKAGE VERIFICATION TEST FROM 1850 HOURS ON 6-9-85 TO 0500 HOURS ON 6-10-85 ABSOLUTE TEST METHOD - MASS POINT ANALYSIS Time Mass Leakage Confidence UCL (hrs) (lbm) . (pct/day) (pct/day) (pct/day) 0.0 546689.41 o.o o.o o.o 0.333 546689.05 o.o o.o o.o 0.666 546668.62 0.137040 0.457690 0.594730 1.000 546670.36 0.098225 0.096328 0.194553 1.333 546647 .13 0.132047 0.063991 0.196038 1.666 546650.18 0 .117125 0.042148 0.159274 2.000 546644.26 0.107561 0.030281 0.137842 2.333 546634.07 0.105815 0.021853 0.127669 2.666 546628.16 0.103144 0.016762 0.119907 3.000 546630.89 0.094178 0.016274 0.110452 3.333 546618.14 0.092649 o. 013198 0.105848 3.666 546616.57 0.089001 0. 011510 0.100511 4.000 546599.15 0.091422 0.009960 0.101382 4.333 546590.36 0.093640 0.008767 0.102406 4.666 546590.50 0.092696 0.007605 0.100302 5.000 546570.55 0.095813 0.007335 0.103148 5.333 546577. 90 O. 094177 0.006648 0.100825 5.666 546552.17 0.097323 0.006683 0.104007 6.000 546548.01 0.098900 0.006163 0.105063 6.333 546546.73 0.098878 0.005527 0.104405 6.666 546527.87 0.100805 0.005344 0.106149 7.000 546520.51 0.102203 0.005041 0.107244 7.333 546507.38 0.104037 0.004939 0.108976 7.666 546496. 85 0.105796 0.004843 0.110639 8.000 546497.79 0.106073 0.004454 0.110528 8.333 *546481.48 0 .107221 0.004258 0.111479 8.666 546462.28 0.109282 0.004433 0.113721 9.000 546320.59 0.123922 0.014986 0.138908 9.333 546379.15 0.129558 0.014994 0.144551 9.666 546409.36 0.130737 0.014023 0.144761 1 of 1

ATTACHMENT 3.3I CONTAINMENT INTEGRATED LEAKAGE RATE TEST SUPERIMPOSED LEAKAGE VERIFICATION TEST FROM 1850 HOURS ON 6-9-85 TO 0500 HOURS ON 6-10-85 ABSOLUTE TEST METHOD - TOTAL TIME ANALYSIS Time Mass Measure Leakage Estimate Leakage Confidence UCL (hrs) (lbm) (pct/day) (pct/day) (pct/day) (pct/day) 0.0 546689.41 a.a a.a a.a a.a 0.333 546686. 05

• 0.044397 a.a a.a a.a 0.666 546668.62 O.137040 a.a a.a a.a 1.000 546670.36 0.083659 0.107970 0.577828 0.685798 1.333 546647.13 0 .139264 0.135743 0.212997 0.348740 1.666 546650.18 0.103392 0.125577 0.155481 0.281058 2.000 546644.26 0.099103 0.117437 0.125329 0.242766 2.333 546634.07 0.104144 0.114753 0.104474 0.219227 2.666 546628.16 0 .100872 0.111532 o. 091130 0.202662 3.000 546630.89 0.085634 0.103536 0.083990 o.. 187525 3.333 546618.14 0.093881 0.100824 0.076225 0.177049

• 3.666 546616.57 0.087229 0.096754 0.070536 0.167290 4.000 546599.15 0. 099071 0.097253 0.065380 0.162633 4.333 546590.36 0.100357 0.097989 o. 061148 0.159137 4.666 546590.50 0.093063 0.096683 0.057641 0.154324 5.000 546570.55 0.104365 0.098393 0.054774 0.153167 5.333 546577. 90 0.091796 0.096893 0.052245 0.149138 5.666 546552.17 0.106340 0.098819 0.050177 0.148996 6.000 546548.01 0.103459 0.099806 0.048165 0.147971 6.333 546546.73 0.098906 0.099733 0.046317 0.146050 6.666 546527.87 0.106389 0.101059 0.044767 0.145826 7.000 546520.51 0.105926 0.102091 0.043317 0.145408 7.333 546507.38 0.108976 0.103481 0.042054 0.145535 7.666 546496.85 0 .110273 0.104875 0.040897 0.145772 8.000 546497.79 0.105155 0.105269 0.039738 0.145007 8.333 546481.48 0.109543 O.106263. 0.038703 0.144966 8.666 546462.28 0 .115061 0.107923 o. 037872 0.145795 9.000 546320.59 0.179905 O.118464 0.047057 0.165521 9.333 546379.15 0.145942 0.123125 o. 04 7151 0.170276 9.666 546409.36 0.127194 0.124770 0.046109 0.170879 1 of 1

SECTION 4 LOCAL LEAKAGE RATE TESTS (TYPES BAND C)

Section 4 summarizes the Local Leakage Rate Test (LLRT) data which has been obtained from periodic testing performed since .the September 1983 Type A Test.

LLRT procedural changes were made during this refueling period to utilize the makeup air test method, where feasible, instead of the downstream test method. The makeup air test method consists of pressurizing the test volume with air or nitrogen. The makeup air required to maintain the test pressure is directly measured using a flowmeter. All leakage is conservatively assigned to the isolation valve unless shown otherwise.

These LLRT's were performed using the makeup air test method by pressurizing the listed penetrations with air or nitrogen and measuring leakage across the respective containment isolation boundary.

Also during this surveillance period, tighter leakage limits were imposed on containment isolation valves to minimize the "as-left" local leakage rates. Attachment 4A states the repair details for the affected containment valves. Penetration leakage rate can be obtained from site reference material.

The acceptance criteria for Types Band C testing is in accordance with 10CFR50, Appendix J. The combined '.'as-left" leakage rate for all penetrations and valves, subject to Types Band C tests, were well below the acceptance criteria of less than 0.6 L.

a As requested by the Nuclear Regulatory Cotmnission, Section 4 also contains an analysis of the containment penetrations that were repaired during the 1985 Surry Unit No. 2 Refueling Outage to assess the

'.'as-found" containment leakage condition. The details of this analysis are shown in Attachment 4B.

The data contained in this section is summarized below:

Attachment No. Title 4A 1985 Local Leakage Rate Penetration Data 4B 1985 "AS-FOUND" LLRT Leakage Summary Analysis 4-1

ATTACHMENT 4A 1985 LOCAL LEAKAGE RATE TEST PENETRATION DATA Type Equipment/Valves Pre-repair Post-repair Penetration No. Test Tested Leakage (scfh) Leakage (scfh) W.O. No./Repair 7 Safety C 2-SI-150 72.0 3.30 017810 MOV-2867C Injection MOV-2867C (combined) (combined)

MOV-2867D 15 Charging C 2-CH-309 0.29 0.29 MOV-2289A 0.48 0.48 19 Charging C MOV-2381 0.0 0.0 20 Safety C 2-SI-32 o.o 0.0 Injection 21 Safety C MOV-2842 3.20 0.0 MOV-2842 Injection 23 Safety C MOV-2869B 0.24 0.24 Injection 24 Residual Heat C MOV-RH-200 o.o 0.0 Removal 28 Chemical and C HCV-2200 A, B, C >220.0 o. 72 002833 HCV-2200A replaced stem, plug, Volume TV-2204 (combined) (combined) and gage.

Control 2.89 1.50 001983 HCV-2200B replaced internals and stem.

002832 HCV-2200C replaced internals and stem.

018634 TV-2204 lapped seat and disc.

32 Gaseous C TV-GW-203 0.0 0.0 Waste TV-GW-202 0.0 o.o 1

• of 7

ATTACHMENT 4A (CON'T)

Type Equipment/Valves Pre-repair Post-repair Penetration No. Test Tested Leakage (scfh) Leakage (scfh) W. O. No. /Repair 33 Gaseous Drains C TV-DG-208A 101.0 0.0 018106 TV-DG-208A lapped seat and plug.

0.115 0.115 019807 TV-DG-208A adjusted packing.

38 Aerated Drain C TV-DA-200A 20.80 0.145

• 017991 TV-DA-200A lapped seat and plug.

TV-DA-200B >188.0 0.182 019673 TV-DA-200B lapped seat and plug.

42 Service Air C 2-SA-81 0.0 0.0 2-SA-82 0.0 0.0 43 Rad C 2-RM-3 1.96 0.013 0179.79 2-RM-3 lapped seat and disc.

Monitoring TV-RM-200A 0.068 0.068 NA 44 Rad C TV-RM-200B 0.0 0.0 Monitoring TV-RM-200C 0.0 0.0 45 Primary C 2-RC-160 o.o 0.0 Grade Water TV-2519A o.o 0.0 46 Charging C FCV-2160 1. 3 0.25 020478 FCV-2160 adjusted packing and stroke.

47 Instrument C 2-IA-864 12.23 0.027 017945 2-IA-864 lapped seat and disc.

Air 2-IA-704 o.o 0.0 TV-IA-200 0.0169 0.0169 48 Vent and C TV-VG-209A 0.0 0.0 Drain TV-VG-209B 0.0 0.0 2 of 7

ATTACHMENT 4A (CON'T)

• Type Equipment/Valves Pre-repair Post-repair Penetration No. Test Tested Leakage (scfh) Leakage (scfh) W.O. No. /Repair 50 Safety C TV-SI-201A 0.52 0.085 017842 TV-SI0201A lapped seat and disc.

Injection TV-SI-201B 0.35 019674 TV-SI-201B lapped seat.

51 Service C 2-SW-206 o.o o.o Water 2-SW-208 0.023 0.023 53 Safety C 2-SI-304 o.o o.o Injection TV-SI-200 1. 70 0.0416 017893 TV-SI-200 lapped seat, 54 Primary C 2-VA-l 0.0 o.o Vent 2-VA-9 o.o o.o 55D Leakage C TV-LM-200E o.o o.o Monitoring TV-LM-200F o.o o.o 56A Sample C TV-SS-206A 3.35 0.027 017729 TV-SS-206A Installed new valve.

System TV-SS-206B 2.80 0.0074 TV-SS-2068 56B Sample C TV-SS-202A 0.165 0.034 017728 TV-SS-202A Installed new valve.

System TV-SS-202B 0.313 0.075 017727 TV-SS-202B Installed new valve.

56D Sample C TV-SS-200A LS o.o 017769 TV-SS-200A replaced stem tip.

System TV-SS-200B 1.2 0.112 017770 TV-SS-200B replaced plug.

57A Sample C TV-22-201A 0.74 o.oo 017771 TV-SS-201A replaced stem tip.

System 019581 TV-SS0201A replaced o-ring and rupture diaphram.

TV-SS-201B 4.50 0.03 017772 TV-SS-201B lapped seat and replaced plug, 57B Drain C TV-DA-203A o.o o.o System TV-DA-203B o.o o.o 3 of 7

ATTACHMENT 4A (CON'T)

Type Equipment/Valves Pre-repair Post-repair Penetration No. Test Tested Leakage (scfh) Leakage (scfh) W.O. No./Repair 57C Leakage C TV-LM-200G o.o o.o Monitoring TV-LM-200H o.o o.o 57D Sample C TV-SS-204A o.o o.o System TV-SS-204B 5.86 0.10 017812 TV-SS-204B lapped seat and replaced plug, bellows, and o-rings.

58 Instrument C 2-IA-868 O! 966

• o.o 017946 2-IA-868 lapped seat and disc.

Air l-IA-704 o.o o.o 60 Safety C MOV-2890A 5.2 5.* 2 Injection 61 Safety C MOV-2890C L3 l.~

Injection 62 Safety C

• MOV-2890B o!o o.o Injection 63 Containment C 2-CS-24 1.0 1.0 Spray MOV-CS-201C,D 1.0 0.48 MOV-CS-201C,D adjusted torque switch.

(combined) (combined) 64 Containment C 2-CS-13 1.0 1.0 Spray MOV-CS-201A,B 1.3 o.o (combined) (combined) Mov~cs-201A,B adjusted torque switch.

66, Recirculation C MOV-RS-255A,B o.o 0.69 018728 MOV-RS-255A reworked actuator.

67 Spray (combined) (combined) 018727 MOV-RS-255B reworked actuator.

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ATTACHMENT 4A (CON 1 T)

Type Equipment/Valves Pre-repair Post-repair Penetration No. Test Tested Leakage (scfh) Leakage (scfh) W.O. No./Repair 68, Safety C MOV-2860A,B - 5.0 5.0 69 Injection (combined) (combined) 70 Recirculation C 2-RS-11 0.9 0.9 Spray MOV-RS-256B 0.5 3.78 019525 MOV-RS-256B replaced limitorque pin.

71 Recirculation C 2-RS-17 o.o o.o Sray MOV-RS-256A 3.84 1.63 019229 MOV-RS-256A reworked actuator.

89 Air Ejector C 2-VP-12 8. 72 0.43 0188894 2-VP-12 lapped seat and disc.

Discharge TV-SV-202A o.o o.o 90 Ventilation C MOV-VS-200C 8.6 0.461 020178 MOV-VS-200D replaced gasket.

MOV-VS-200D, 201 (combined) (combined) 020418 MOV-VS-201 checked torque switch.

91 Ventilation C MOV-VS-200A 2.30 2.0 No work performed, retest only.

MOV-VS-200B, 202 (combined) (combined) 92 Containment C TV-GW-204 o.o o.o Vacuum TV-GW-205 0.0 o.o TV-CV-250C 3.10 0.29 017894 TV-CV-250C lapped seat and plug.

TV-CV-250D 1.50 0.29 TV-CV-250D 93 Containment C TV-GW-200 o.o o.o Vacuum TV-GW-201 0.0 o.o TV-CV-250A 13.20 0.082 017591 TV-CV-250A lapped seat and plug.

TV-CV-250B 5.10 0.18 017590 TV-CV-250B lapped seat and plug.

94 Containment C HCV-CV-200 0.20 0.20 Vacuum 2-CV-2 0.083 0.083 5 of 7

ATTACHMENT 4A (CON'T)

Type Equipment/Valves Pre-repair Post-repair Penetration No. Test Tested Leakage (scfh) Leakage (scfh) W.O. No./Repair 97B Sample C TV-SS-203A 0.0185 0.0185 System TV-SS-203B 0.0452 0.0452 97C Leakage C TV-LM-200A o.o o.o Monitoring TV-LM-200B o.o o.o 100 Gaseous C TV-GW206 o.o o.o Waste TV-GW-207 0.0 o.o 101 Fire C 2-FP-151 0.0 o.o Protection 2-FP-152 1.5 o.o 018575 2-FP-152 lapped seat.

103 Reactor C 2-RL-3 0.0 o.o Cavity 2-RL-5 (combined) (combined)

Purification 104 Reactor C 2-RL-13 o.o o.o Cavity 2-RL-15 o.o o.o Purification 105B Leakage C TV-LM200C o.o o.o Monitoring TV-LH-200D o.o o.o 105C Post C TV-GW-211A o.o o.o Accident TV-GW-211B o.o o.o Sampling 106 Safety C 2-SI-73 0.0 o.o Inject.ion 6 of 7

ATTACHMENT 4A (CON'T)

Type Equipment/Valves Pre-repair Post-repair Penetration No. Test Tested Leakage (scfh) Leakage (scfh) w.o. No. /Repair 112 Instrument C TV-IA-201A o.o o.o.

Air TV-IA-201B o.o 0.0 113 Safety C S-SI-174 2.1 0.58 Injection MOV-2869A (combined) (combined)

Personnel B 0-ring 5.8 5.8 Air Lock Equipment B 0-ring 0.0 0.0 Hatch Fuel Transfer B 0-ring 0.0 0.0 Tube Emergency B 0-ring 2.5 2.5 Air Lock All electrical penetrations were tested prior to the performance of the CILRT with a combined total leakage of O. 00437 scfh.

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ATTACHMENT.4B 1985 "AS-FOUND" LLRT LEAKAGE

SUMMARY

ANALYSIS Specific penetrations were repaired during the 1985 Surry Power Station Unit No. 2 refueling outage.

The effect of each Local Leakage Rate Test (LLRT) repair was analyzed to predict the outcome of the Type A Test if it were performed prior to the repairs. Each penetration is reviewed using the following selection criteria:

a. A leakage equivalent to the. repair improvement achieved on each valve in the penetration is calculated.

b. The leakage equivalent is the difference between the "as-found" and the "as-left" results.

c. If a repair was not performed, a zero leakage is assessed to the valve.

d. The leakage equivalent assessed to a penetrations may be reduced due to the safety~related service of the penetration. Justification for these type of penetrations will be provided for this reduction~

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

f *. The net leakage equivalent is added to the Type A results of Sections 3.3.2.1 and 3.3.2.2~

g. If the results of the. "as-found" Type A are less than 0.1 percent/day, containment integrity before repairs has been demonstrated.

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ATTACHMENT 4B (CON'T) 1985 "AS-FOUND" LLRT LEAKAGE

SUMMARY

ANALYSIS Penetration No. Inside Outside Net Remarks (SCFH) (SCFH) (SCFH) 7 Safety Injection 68.7 0 See Note 1 21 Safety Injection 3.2 0.0 See Note 1 28 Chemical & Vol C >220.0 1.39 1. 39 See Note 2 33 Gaseous Drains 101.0 o.o o.o 38 Aerated Drains 20.655 >188.0 20.655 See Note 2 43 Rad. Monitoring 1.947 o.o o.o 46 Charging 1.05 o.o See Note 1 47 Instrument Air 12.203 a.a o.o 50 Safety Injection 0.435 0.435 See Note 3 53 Safety Injection 0.0 1.6584 o.o 56A Liquid Sample 3.323 2.7926 2. 7926 56B Liquid Sample 0 .131 0.238 0.131 56D Liquid Sample 1.5 1.088 1.088 57A Sample System 0.74 4.47 0.74 57D Sample System 0.0 5.76 o.o 58 Instrument Air 0.966 o.o a.a 63 Cont. Spray o.o 0.52 a.a 64 Cont. Spray a.a 1.3 o.o 71 Recirc. Spray 0.0 2.21 o.o 89 Air Ejec. Dsch. 8.29 a.a o.o 90 Ventilation 0.0 8.139 o.o See Note 4 91 Ventilation 0.3 0.3 0.3 92 Cont. Vacuum 1. 21 1. 21 93 Cont. Vacuum 4.92 4.92 101 Fire Protection 1.52 0.0 See Note 1 113 Safety Injection 1.52 0.0 See Note 1 2 of 4

ATTACHMENT. 4B (Can't) 1985 "AS-FOUND" LLRT LEAKAGE

SUMMARY

ANALYSIS Methods were applied, as described in (f) and (g) above, with the results listed below.

CILRT Results

1. Net Equivalent 33.662 SCFH

2. "AS-FOUND" Type A-:MP (Percent/Day)

a. Mass Point Analysis 0.039754 from 3.3.2.1

b. Net Equivalent Leakage 0.011049

c. "AS-FOUND" Type A- 0.050803 Mass Point Analysis

3. "AS-FOUND" Type A - TT (Percent/Day)

a. Total Time Analysis 0 *.061023 From 3.3.2.2

b. Net Equivalent Leakage 0. 011049

c. "AS-FOUND Type A- 0.072072 Total Time Analysis 3 of 4

ATTACHMENT 4B (Con't) 1985 "AS-FOUND" LLRT LEAKAGE

SUMMARY

ANALYSIS CONCLUSION:

The "As-Found" Type A results for the Mass Point and Total Time Analysis indicates that the results are less than 0.075 percent/day.

NOTES:

1. This line is

• from the charging pump header and is used to fill/supply the loops. The charging pumps are used as the high head safety injection pumps. The chemical and voiume control system valves, piping, and components have- been designed to permit essentially zero leakage. Periodic surveillance is performed to verify leakage is within specifications. Reference Surry UFSAR, Section 6,2,3.10, External Recirculation Loop Leakage.

2. Greater than represents the largest flowmeter used for the 1985 LLRT program.

3. "As-Found" LLRT data was not obtained for valve TV-SI-201B. The net leakage results for this penetration is conservative, such that, if the leakage for this valve was higher than the inside valve, minimum pathway is being utilized. If the leakage for this valve was less than the inside valve, the higher leakage for the penetration was assessed.

4. This penetration is tested between valves. Inside valve MOV-VS-200C was not repaired, thus a net equivalent leakage of zero.

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