ML20066E687

Reactor Containment Bldg ILRT

ML20066E687
Person / Time
Site:	North Anna
Issue date:	10/31/1990
From:	Stewart W VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
91-016, 91-16, NUDOCS 9101220172
Download: ML20066E687 (79)

Text

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VIROINIA ell:CTHIC AND POWI:H CO)!PANY Hicti>toxu,Vruoixir unun January 15,1991 U.S. Nuclear Regulatory Commission Serial No. 91 016 Attention: Document Control Desk NAPS /JHL R0 Washington, D. C. 20555 Docket No. 50 339 License No. NPF 7 Gentlemen:

VIRGINIA ELECTRIC AND POWER COMPANY HQBTH ANNA POWER STATION UNIT 2 REACTOR CONTAINMENT BUILDING INTEGRATED LEAK RATE TEST Pursuant to 10 CFR 50, Appendix J, Section V.B, enclosed is the Reactor Containment Building Integrated Leak Rate Test Report for North Anna Power Station Unit 2.

If you have any questions or require additionalinformation, please contact us.

Very truly yours,

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W. L. Stewart Senior Vice President - Nuclear Enclosure cc: U.S. Nuclear Regulatory Commission Region ll 101 Marietta Street, N.W.

Suite 2900 Atlanta, Georgia 30323 Mr. M. S. Lesser NRC Senior Resident inspector North Anna Power Station D

9101220172 901031 (

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ADOCK0500g9 \ ( .{

I NORTil ANNA. POWER STATION UNIT 2 L

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REACTOR CONTAINhfENT HUILDING INTEGRATED LEAK RATE TEST

' OCTOBER 1990 4

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VIRGINIA ELECTRIC AND POWER COh!PANY i

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f INDEX SECTIONS

.i SECTION 1: INTRODUCTION SECTION 2:

SUMMARY

SECTION 3: CENERAL AND TECHNICAL DATA SECTION 4: ACCEPTANCE CRITERIA i

SECTION 5: TFST INSTRUMENTATION SECTION 6: TEST PROCEDURE SECTION 7: ANALYSIS MKrHODS .

i SECTION 8:- TFET RESULTS SECTION 9: LOCAL LEAKAGE RATE TESTING SECTION 10: REFERENCES APPENDICFS f

APPENDIX A: COMPUTER PRINTOUTS APPENDIX B: DATA ANALYSIS INFORMATION-APPENDIX C: GRAPHS

APPENDIX D

LOCAL LEAKAGE RATE TESTING

SUMMARY

l APPENDIX E: LOCAL LEAKACE RATE TESTING FAILURE

SUMMARY

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SECTION 1 INTRODUCTION This report has been prepared to provide a description and an analysis of the October 1990 containment integrated leakage rate test (ILRT) performed on Virginia Electric and Power Company's (VEPCO's) North Anna Power Station, Unit 2 and to provide a summary of the local leakage rate tests (LLkTs) performed on the Unit 2 containment penetrations since the last Unit 2 ILRT which was performed in April 1989.

Bechtel Power Corporation (Containment Test Group) provided engineering consultation services to VEPCO during the performance of the October 1990 Unit 2 ILRT.

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

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SECTION 2

SUMMARY

2.1 October 1990 CONTAINMENT INTEGRATED LEAKAGE RATE TEST (ILRT)

The final containment walkdown and penetration preparations were completed by 1230 on 10/16/90.

Pressurization began at 1617 on 10/16/90. During the pressurization, extensive Icak checks were performed by visually inspecting potential leak paths such as the mechanical penetration area, the electrical penetration area, the personnel air lock, and the main steam lines. No significant leakage paths were' discovered.

Pressurization was secured at 0339 on 10/17/90 at a containment pressure of 44.55 psig. Stab 11 ration requirements were met and the ILRT started at 1800 on 10/17/90.

One of the containment air recirculation fans tripped at 1634 on 10/18/90.

Fortunately this occurred late in the test, thus a statistically acceptable test was still obtainabic.

The ILRT portion of the procedure was successfully completed at 1800 on 10/18/90.

The 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> 95% UCL mass point Icakage rate was 0.022 weight %/24 hours.

The verification test was initiated at 1900 on 10/18/90. The verification test required 9 hours1.041667e-4 days <br />0.0025 hours <br />1.488095e-5 weeks <br />3.4245e-6 months <br /> to complete because of the effects of the containment air recirculation fan tripping. The verification test was successfully completed at 0400 on 10/19/90 with a measured mass point composite leakage rate of 0.104 wt %/24 hrn, which was within the allowable range of 0.095 wt %/24 hrs to 0.145 wt %/24 hrs.

2.2 LOCAL LEAKAGE RATE TESTS (LLRTs)

The local Icakage rate tests (LLRTs) of the containment isolation valves and primary containment penetrations have been conducted since the performance of the last Unit 2 ILRT performed in April 1989 as required by 10CFR50, Appendix J and the Station's Unit 2 Technical Specifications using appropriate Station procedures.

In accordance with 10CFR50, Appendix J.Section V.B. the data for the Unit 2 LLRTs performed since April 1989 are summarized in Appendices D and E of this report.

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Section 2 1

SECTION 3 GENERAL AND TECHNICAL DATA 3.1 GENERAL DATA

3.1.1 Owner

Virginia Electric and Power Company Plant Name: North Anna Power Station Unitt 2 3.1.2 Docket No.: 50-339 3.1.3 Plant Location: South shore of Lake Anna Louisa County, Virginia 3.1.4 Containment

Description:

Reinforced concrete, steel lined.

Operating at subatmospheric pressure 3.1.5 ILRT Completion Date: October 19, 1990 TECllNICAL DATA 3.2.1 Containment Het Free Volume: 1.825 x 106 cubic feet 3.2.1 Design Pressure: 45.0 psig 3.2.3 Design Temperature: 280 'F 3.2.4 Calculated LOCA Peak Pressure: 44.1 psig 3.2.5 Calculated LOCA Peak Temperatures 280 *F 1

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SECTION 4 ACCEPTANCE CRITERIA 4.1 ILRT 4.1.1 Test Method: Absolute Method 4.1.2 Data Analysis Technique: 24 Hour Test Duration using the Mass Point Data Analysis Method 4.1.3 Test Pressure: 44.1 poig - 45.0 psig 4.1.4 Maximum Allowable Leakage 0.1 veight%/24 hours (304.4 SCFH)

Rate:

4.1.5 Maximum Unit 2 Technical 0.075 we %/24 hours Specification Leakage Rate:

4.2 VERIFICATION TEST 4.2.1 Superimposed Leakage 0.075 wt%/24 hrs - 0.125 wt%/24 hrs Rate Range:

4.2.2 Required Agreement for +/- 0.025 wt %/24 hours Composite Leakage Rates l

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SECTION 5  ;

TEST INSTRUMENTATION l

5.1 INSTRUMENTATION SELECTION GUIDE (ISG) FORMULA CALCULATION RESULTS Appendix B provides the calculations of the ISG at the ILRT conditions.

5.2 MEASUREMENT SYSTEM COMPONENT DESCRIPTION For the ILRT, eighteen resistance temperature detectors (RTDs) 5 moisture temperature detectors (HTDs), and 2 absolute manometers were used.

In addition to the above instrumentation, two laminar flow elements were used for the verification test.

5.3 PERFORMANCE OF INSTRUMENTATION All of the test instrumentation performed as required during the ILRT and the-verification test except RTD 2-LM-TE-200-16 which erratically fluctuated high and low.

It was deleted from all leak rate calculations.

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SECTION 6 TEST PROCEDURE 6.1 INITIAL CONDITIONS FOR TESTING '

In accordance with the North Anna Power Station Unit 2 ILRT procedures, 2-PT-61.1 and 2-PT-61.1 A-K, the following initial conditions were met and documented prior to commencing containment pressurization. The following is not an all inclusive listing of the procedural initial conditions.

6.1.1 In accordance with 10CFR50, Appendix J.Section V.A. a general inepection of the accessible interior and exterior surfaces of the containment structure was satisf actorily performed.

6.1.2 All test instrumentation was calibrated within six months.of the test.

6.1.3 All required system valve line-ups were completed, including the venting of possible pressurization sources.

6.1.4 All required local leakage rate testing was completed and reviewed by the Test Director.

6.1.5 A leak check of the absolute side of the Icakage monitoring system was successfully completed.

6.1.6 The computers were operational and programmed for the ILRT.

6.1.7 A containment walkdown was performed to ensure no pressurization sources were present in containment.

6,1.8 The containment air recirculation system was operational and maintaining stable containment atmospheric conditions.

6.1.9 The official log of events was established.

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

6.2 PRESSURIZATION PHASE Pressurization of the containment was achieved by the use of ten diesel driven air compressors. Compressed air was piped through two aftercoolers in parallel and then through a refrigerant air dryer. Adequate instrumentation and controls were installed to maintain control of the compressed air quality during the pressurization phase. The total capacity of the pressurization system was slightly in excess of 10,000 cubic feet per minute. Pressurization was initiated at 1617 on 10/16/90 and was secured at 0339 on 10/17/90 at a containment pressure of 44.55 psig.

6.3 ILRT PHASE The various containment parameters were monitored by the Leakage Monitoring (LM) system instrumentation. The instrumentation consisted of eighteen resistance temperature detectors (RTDs). 5 moisture temperature detectors (MTDs), and two absolute manometers.

Stab 11zation requirements were met and the ILRT started at 1800 on 10/17/90.

Containment- air recirculating fan 2-HV-F-1B tripped at 1634 on 10/18/90 with approximately I hours remaining in the test. A statistically acceptable test was obtained despite this disturbance.

The ILRT portion of the procedure continued until 1800 on 10/18/90. Data from RTD 2-LM-TE-200-16 was discounted from all test calculations because of observed Page 1 of 2 Section 6

erratic output. .The. levels of tanks and' vessels located-inside containment were.

monitored hourly during the testing portion. with no significant differences onoted except reduction in pressurizer level and in?.7aase in containment sump icycl. The pressurizer level decrease was expected due to the known RCS leak. A calculation has

-been performed which verifies that that there was no reoultant change in containment-free volume. The 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> 95% UCL mass point leakage rate was 0.022 weight %/24 hours. t 6.4 VERIFICATION PHASE Ti.m verification test was initiated at 1900 on 10/18/90. The test required 9 hours1.041667e-4 days <br />0.0025 hours <br />1.488095e-5 weeks <br />3.4245e-6 months <br /> because of the disruption of air flow in the containment which resulted from the recirculating air fan tripping.

The verification test'was completed at 0400 on 10/19/90 with a measured mass point composite Icakage rate of 0.104 vt %/24 hrs, which was within the allowable range of 0.095 wt %/24 hre to 0.145 wt %/24 hrs.

6.5 DEPRESSURIZATION PHASE The containment was depressurized through a T-connection and ball-valve installed in the temporary pressurization piping. The post containment walkdown revealed no.

significant deficiencies.

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SECTION 7 ANALYSIS MET 110DS .

7.I DATA ACQUISITION SYSTEM The data acquisition system used for the ILRT and the verification test, with exception of the flowmeters, was the Unit 2 Westinghouse Prodac P250 plant computer.

Monitoring of the flovmeters during the verification test was accomplished by local observation of the digital displays to ensure a constant flow rate.

The instantaneous P250 data was inputted at fifteen minute intervals to a personal computer and processed by the Bechtel Power Corporation's ILRT computer program. This program verifies the validity of the data, weights the RTD and MTD readings, and performs the necessary leakage rate calculations. The inputting of data continued from the start of pressurization until the end of the verification test.

Instantaneous values of the ILRT instruments were printed at 15 minute intervals during the test period using the P250 digital trend function on the operator's Console.

7.2 ABSOLUTE METil0D OF MASS POINT ANALYSIS The absolute method of mass point analysis consie a of calculating air masses within the containment structure over the test period using pressure, temperature, and air moisture inputs. The air masses are computed using the ideal gas law as follows:

M= 144V (P-Py )

RT where: M = containment air mass, Ibm P = total containment pressure, psia P = containment vapor pressure, psia R = universal gas constant for air, 53.35 ft-lbg /lb,-R T = average containment temperature, R V = containment volume, 1.825 x 106 7t 3 ,

The leakage rate is then determined by plotting the containment air mass as a function of time, using a least squares fit to determine the slope.

A 95-percent confidence interval is calculated using a Student's t distribution.

The sum of the leakage rate and the 95-percent confidence interval is the UCL.

Appendix B provides further description of the program.

7.3 STATISTICAL EVALUATION

, Appendices A and B provide the necessary information for the statistical l

cvaluation of the data.

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SECTION 8 TEST RESULTS 8.1 ILRT Measured Leakage Rate ~0.020 weight %/24 hours UCL: 0.022 weight %/24 hours As Found As Left Leakage Savings: 07012 wt %/24 hrs 0.000 wt %/24 hrs type C Penalties: 0.003 vt %/24 hrs 0.003 wt %/24 hre Total Reported Leakage: 0.037 wt %/24 hrs 0.025 wt %/24 hrs 8.1.1 Leakage Savings Description The Icakage savings for the As Found ILRT in the dif ference in the minimum pathway leakage (MPL) from the premaintenance Type C values recorded at the start of the- 1990 Unit 2 outage and MPL from the Type C values recorded after maintenance and prior to the Unit 2 October 1990 ILRT. The Icakage savings'for the As Left ILRT is the difference in the MPL from the Type C values recorded at the time of the Unit 2 October 1990 ILRT and the MPL from the Type C values recorded after post ILRT maintenance and prior to the November 1990 Unit 2 Cycle 8 start-up.

Page 1 of 4 Section 8

ILkT As Found Isakage Savings Outage As ILRT- Leakage Penetration Found MPL MPL Savings Number (SCFH) (SCFH) (SCFH) 38 1.0 0 .l.0 39 2.0- 0- 2.0 53 0.1 0 0.1 56A 0.50 0 0.05 64 0.4 0- 0.4 71 1.2 0 1.2 84 16.0 0 16.0 85 12.0 0. 12.0 l 89 0.35 0 0.35 90 1.2 0.4 0.8  !

91  ?.* 0.8- 2.6 Emergency 1.35 1.15 0.40 i Escape Air Lock i

Personnel 2.75 3.2 0 Air Lock E1cetrical 0.934 0.494 0.44  !

Penetrations Total Leakage Savingst 37.34 SCFH ILRT As Left Leakage Savings

-NONE- 1 Calculation of As Found Leakage Savingst 37.34 SCFH x 0.1 wt %/24 hrs 304.4 SCFH

- 0.012 wt %/24 hrs Page 2 of 4 Section 8 l

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a 8.1.2 Type C Penalties Description A minimum pathway leakage (MPL) Type C penalty was applied for_all containment piping penetrations whose containment isolation valves were not exposed to the ILRT i pressure. The listing of the applicable penetrations and the associated MPLs are given below.

Penetration KPL (SCFil) Penetration RL (SCFil) l I 3.9 56D 0 l 2 0.9 57A 0 l 4 2.0 60 0 5 2.6 61 0 7 0 62 0

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8 0 63 0- h 9 0 64 0 j 10 0 66 0 l 11 0 67 0 12 0.55 70 0 13 0.15 71 0 14 0 79 0 15 0 80 0 16 0 81 0 17 0 82 0 18 0 83 0-10 0 84- 0 20 0 85 0 22 0 86 0 24 0 92 0 25 0 93 0 26 0 97A 0 27 0 97B 0 28 0 970 0 31 0 98A 0 39 0 98B 0 40 0 103 0 41 0 105B 0 46 0.1 1050 0 550 0 105D 0 56A 0 109 0-56B 0 113 0 560 0 114 0 Total: 10.20 SCFil Calculation of Type C Penalties: 10.20 SCFil x 0.1 vc %/e4 hrs 304.4 SCFil

• 0.003 wt %/24 hra Page 3 of 4 Section 8-b'l

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8.2 VERIFICATION TEST The calculated superimposed leakage rate (L,) was 5.4e nefm x 60 min /hr x 0.1 wt %/24 hrs = 0.1005 wt %/24 hrs.

304.4 SCFH The measured leakage rate (L,,) was 0.020 wt %/24 hrs.

The limits for the composite leakage rate (L ) weret L +L C

+ 0.25L = 0.095 we %/24 hrs L","

, + L, - 0.25L", = 0.145 vt %/24 hrs.

The measured composite leakage rate (L ) was 0.104 wt %/24 hrs.

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SECTION 9 j IDCAL 1.EAKAGE RATE TESTING l

Appendix D containn a summary of all of the LLRTs performed on Vnit 2 cotepcnents since the last Unit 2 ILRT which was perfortned in April 1990.

Appendix E contains information on all of the LLRTs performed on Unit 2 components since April 1990 that had Icakages greater the 0.60L,.

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i SECTION 10 REFER 1:NCES 10.1 North Anna Power Station, Unit 2. Periodic Test procedurest 2-PT-61.1 Reactor Containment Integrated Leak Rate Test 2-PT-61.lA Containment Structurni Inspection 2-PT-61.lb ILRT Instrumentation Set-up and Calibration 2-PT-61.lc Cooling Water Hookups for ILRT Air Pressurization Equipment 2-PT-61.lD Leak Check of Abcolute Side of LM System 2-PT-61.lr Leak Check of Steam Generators 2-PI-61.lG Checkout of ILRT Air Pressurication Equipment 2-PT-61. Ill ILRT Penetration Lineups 2-PT-61.11 Secondary System Instrumentation Integrity for ILRT 2-PT-61.lJ Venting of Containment for ILRT 2-PT-61.iK Mechanical ILRT Set-up of Containment Equipment 10.2 10CPR50 Appendix J. Primary Reactor Containment Leakage Testing for Water-Cooled Power Reactors 10.3 ANSI N45.4-1972 American National Standard Leakage kate Testing of Containment Structures for Nuclear Reactors 10.4 ANSI 56.8-1987 American National Standard, Containment System Leakage Testing Requirements 10.5 Bechtel Power Corporation, Bechtel ILRT Program. Version 4.0, 10/14/88 l

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APPENDII A COMPUTER PRIN11)UTS y .-y a q w -Wi -1+ qs we d-fr- n - - ---

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NORTH ANNA POWER STATION - UNIT 2 i

SUMMARY

DATA J l

[ ALMAX.'= .100 VOLUME = 1825000. '

VRATET = .119 VRATEM = .120 '

TIME DATE TEMP PRESSURE VPRS VOLUME AIRMASS -

345 1017 538.515 59.2695 .2511 1825000.0 542156.3 i 400 1017 538.396 59.2561 .2509 1825000.0 542153.7  !

. 415 1017 538.282 59.2438 .2523 1825000.0 542155.1 l 430 1017 538.202 59.2353. .2513 1825000.0 542158.8

445 1017 538.122 59.2256 .2526 1825000.0 542149.8 500 1017 538.062 59.2167 .2537 1825000.0 542129.5 515 1017 537.998 59.2112 .2521 1825000.0 542143.3 .,

530 1017 537.944 59.2032 .2535 1825000.0 542124.9  !

545 1017 537.894 59.1977 .2527 1825000.0 542124.8 600 1017 537.849 59.1905 .2539 1825000.0 542103.8.

615 1017 537.807 59.1858 .2530 1825000.0 542103.3-630 1017 537.761: 59.1795 .2539 1825000.0- 542091.6

! 645 1017 537.731 59.1741 .2541 1825000.0 542072.8 1-700 1017 537.706 '59.1698 .2535 1825000.0- 542057.9

< 715 1017 537.663 59.1636 .2550. 1825000.0 542045.6-730 1017 537.630 59.1601 ~.2539 1825000.0 542046.4 745 1017 537.601 59.1553 .2542 1825000.0- 542030.8 800 1017 537.578 59.1516 .2537 1825000.0 542021.5 815'1017 15'37.545 59.1473 .2538 1825000.0 -542014.6 830 1017 537.516 59.1432. .2537 1825000.0 542005.9 845 1017 537.499 59.1392 . 2036 1825000.0- 541987.3 900 1017 537.472 59.1344 .2546 1825000.0 541970.2 915 1017 537.459 59.1327 .2527 1825000.0 541967.6 930 1017 537.424 59.1262 .2556 1825000.0- 541943.0 945 1017 537.402 59.1251 -.2532 1825000.0= $41955.1' 1000 1017 537.373 59.1213 .2534 1825000.0 541949.5 -

1015 1017 537.322 59.1182 .2531 1825000.0 541972.4 1030 1017 537.302 59.1150 .2530 1825000.0 541963.5 1045 1017 537.278- 59.1122 .2525 1825000.0 541962.1 1100 1017- 537.259 59.1080 .2535 1825000.0 541942.3

' 1115 1017 537.247 59.1054- .2531 1825000.0 541931.1 1130 1017 537.224 59.1022 .2533 1825000.0 541925.1 1145 1017- 537.210 59.0996 .2530 1825000.0 541914.5 1200 1017 537.189 59.0970 .2525 1825000.=0 541912.4 1215 1017 537.178 59.0968- .2500 1825000.0 541922.1 1230 1017 537.157 59.0923- .2514 1825000.0- 541901.4 1245 1017 537.135 59.0883 .2523 1825000.0 541887.7 1300 1017 537.118 59.0859 .2517 1825000.0 541882.0

.1315 1017 537.092 .59.0863 .2486 -1825000.0' 541912.0 1330 1017 537.082 59.0815 .2506- 1825000.0 '541877.8 1345 1017- 537.071 59.0792 .2501 '1825000.0 541868.8 1400 1017 537.045 59.0785 .2481 1825000.0' 541888.2 i

s 1415 1017 537.032 -59.0734 .2506 1825000.0- 541854.2 1430 1017 537.014 59.0713 .2500 1825000.0 541853.2 1445 1017 536.904 59.0670- .2516 1825000.0 541834.1 1500 1017 536.990 59.0658 -.2504 1825000.0 541827.3 1515 1017 536.977 59.0632 .2505 1825000.0 541816.8 1530 1017' 536.961 59.0630. .2482 .1825000.0 541830.8 1545 1017 536.943 59.0595 .2491 1825000.0 541817.0.

1600 1017 536.929 59.0578 .2481 -1825000.0 541815.4

-1615 1017 536.915 59.0533 .2501 1825000.0- 541787.9 L 1630.1017 536.899 59.0532 .2479- 1825000.0 541803'.4 1645-1017 536.880 59.0497 .2490 1825000.0 541790.7 l 1700 1017 536.862 59.0466 .2498 1825000.0 541780.1 '

1715 1017 536.842 59.0471 .2468 1825000.0 541004.5 1730 1017- ~536.333 59.0432 .2482 1825000.0 541779.1 1 1745 1017 536.820 59.0414 .2478- 1825000.0 541774.1 j '1800'1017 536.800 59.0398 .2471' 1825000.0 ~ 541780.3 Page 1 of;4 Appendix A

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NORTH ANNA POWER STATION - UNIT 2

SUMMARY

DATA .

ALMAX = .100 VOLUME = 1825000. i VRATET = .119 VRATEM = .120 '

TIME DATE TEMP PRESSURE VPRS VOLUME AIRMASS 1800 1017 536.800 59.0398 .2471 1825000.0 541780.3 1815 1017 536.787 59.0370 .2475 1825000.0 541768.1 :

1830 1017 536.766 59.0365 .2458 1825000.0 541784.6 !

1845 1017 536.750 59.0353 .2446 1825000.0 541789.6 l 1900 1017 536.735 59.0315 .2461 1825000.0 541769.4 1915 1017 536.716 59.0298 .2455 1825000.0 541773.0 !

1930 1017 536.695 59.0273 .2457 1825000.0 541772.0 1945 1017 536.680 59.0248 .2459 1825000.0 541763.3 2000 1017 536.656 59.0229 .2455 '1825000.0 541771.1 2015 1017 536.643 59.0212 .2451 1825000.0 541768.4 2030 1017 536.626 59.0202 .2441 1825000.0 541776.6 2045 1017 536.601- 59.0186 .2436 1825000.0 541787.1 ;

2100 1017 536.595 59.0155 .2445 1825000.0 541763.9 2115 1017 536.579 59.0143 .2437 1825000.0 541769.1 2130 1017 536.551 59.0120 .2438 1825000.0 541776.1 2145 1017 536.543 59.0096 .2443. 1825000.0 541762.9 3 2200 3017 536.525 59.0000 .2431 1825000.0 541773.4 2215 1017 536.511 59.0080 .2421 1825000.0 541779.9 2230 1017 536.505 59.0051 .2430 1825000.0 541760.5 2245 1017 536.486 59.0027 .2437 1825000.0 541756.8 2300 1017 536.476 59.0026 .2419 1BL3000.0 541765.9 2315 1017 536.457 59.0018 .2406 1825000.0 541777.9 2330 1017 536.442 59.0007 .2401 1825000.0 541783.3 2345 1017 536.430 58.9978 .2412 1825000.0 541768.1 0 1018 536.416 58.9954 .2419 1825000.0 541760.4 15 1018 536.408 58.9933 .2424 1825000.0 541749.6 30 1018 536.395 58.9949 .2393 1825000.0 541777.3 45 1018 536.369 58.9908 .2418 1825000.0 541766.1 100 1018 536.366 58.9908 .2405 1825000.0 541768.0 115 1018 536.366 58.9905 .2393 1825000.0 541765.5 130 1018 536.349 58.9885 .2398 1825000.0 541765.2 145 1018 536.346 58.9871 .2398 1825000.0 541754.4 200 1018 536.327 58.9847 .2408 1825000.0 541751.9 215 1018 536.318 58.9855 .2386 1825000.0 541768.3 230 1018 536.319 58.9832 .2396 1825000.0 541746.9 245 1018 536.314 58.9806 .2407 1825000.0 541728.3 300 1018 536.303 58.9806 .2394 1825000.0 541739.0 315 1018 536.290 58.9778 .2407 1825000.0 541726.5 330 1018 536.283 58.9778 .2393 1825000.0 541733.6 345 1018 536.267 58.9765 .2392 1825000.0 541737.2 400 1018 536.256 58.9757 .2386 1825000.0 541740.9 415 1018 536.245 58.9740 .2388 1825000.0 541736.2 430 1018 536.239 58.9716 .2396 1825000.0 541720.3 445 1018 536.228 58.9720 .2378 1825000.0 541736.0 500 1018 536.216 58.9704 .2378 1825000.0' 541733.5 515 1018 536.212 58.9679 .2390 1825000.0 541713.3 530 1018 536.191 58.9683 .2370 1825000.0 541739.3 545 1018 536.191 58.9659 .2381 1825000.0 541716.9 600 1018 536.173 58.9653 .2371 1825000.0 541730.2 Page 2'of 4 Appendix A

i NORTH ANNA POWER STATION - UNIT 2

SUMMARY

DATA ALMAX = .100 VOLUME = 1825000.

VRATET = .119 VRATEM = .120 TIME DATE TEMP PRESSURE VPRS VOLUME AIRMASS '

615 1018 536.169 58.9636 .2372 1825000.0 541718.9 630 1018 536.164 58.9623 .2369 1825000.0 541711.4 645 1018 536.146 58.9601 .2372 1825000.0 541709.2 700 1018 536.133 58.9589 .2366 1825000.0 541711.3 715 1018 536.122 58.9574 .2363 1825000.0 541708.4 730 1018 536.107 58.9563 .2355 1825000.0 541712.6 745 1018 536.103 58.9554 .2346- 1825000.0 541709.1 i 800 1018 536.082 -58.9528 .2354 1825000.0 541706.0 815 1018 536.077 58.9512 .2350 1825000.0 541697.4  ;

830 1018 536.054 58.9485 .2359 1825000.0 541695.4 845 1018 536.041 58.9496 .2329 1825000.0 541719.2 900 1018 536.035 58.9475 .2334 1825000.0 541704.8 915 1018 536.016 58.9448- .2342 1825000.0 541700.5 930 1018 536.008 58.9441 .2330 1825000.0 541701.1 945 1018 535.994 58.9443 .2311 1825000.0 541718.3 1000 1018 535.981 58.9402 .2337 1825000.0 541693.0 1015 1018 535.980 58.9400 .2321 1825000.0 541692.8 1030 1018 535.966 58.9390 .2315 1825000.0 541696.8 1045 1018 535.949 58.9364 .2325 1825000.0 541690.1 1100 1018 535.950 58.9366 .2308 1825000.0 541692.0 1115 1018 535.942 -58.9330 .2330 1825000 0 541666.0 1130 1018 535.924 58.9331 .2314 1825000.0 541685.0 1145 1018 535.908 58.9321 .2310 1825000.0 541692.5 1200 1018 535.903 58.9320 .2299 1825000.0 541697.1 1215 1018 535.882 58.9310 .2295 1825000.0 541707.9 1230 1018 535.884 58.9283 .2309 1825000.0 541682.1 1245 1018 535.871 58.9279 .2299 1825000.0 541691.1 1300 1018 535.865 58.9258 .2308 1825000.0 541677.9 1315 1018 535.853 58.9252 .2301 1825000.0 541683.8.

1330 1018 535.856 58.9237 .2303 1825000.0 541667.4 1345 1018 535.837 58.9226 .2303 1825000.0 541676.7 1400 1018 535.828 58.9220 .2297- 1825000.0 541680.6 1415 1018 535.820 58.9221 .2284 1825000.0 541689.4 1430 1018 535.817 58.9210 .2287 1825000.0 541682.6 1445 1018 535.814 58.9191 .2293 1825000.0 541668.3 1500 1018 535.801 58.9165 .2308 1825000.0 541657.1 i 1515 1018 T15.795 58.9167 .2292 1825000.0 -541664.9 1530 1018 535.783 58.9159 .2289 1825000.0 541669.6 1545 1018 535.777 58.9155 .2283 1825000.0 541671.4 1600 1018 535.766 58.9146 .2285 1825000.0 541674.3 1615 1018 535.757 58.9134 .2283 1825000.0 541673.1 1630 1018 535.744 58.9118 .2292 1825000.0 541670.9 1645 1018 535.692 58.9098 .2257 1825000.0 541705.7 1700 2318 535.637 58.9045 .2277 1825000.0 541712.9 1715 1018 535.591 58.9020 .2263 1825000.0 541736.5  !

1730 1018 535.561 58.8999- .2250 1825000.0 541747.3 1745 1018 535.531 58.8984 .2243 1825000.0 541763.0~

1800 1018 535.515 58.8955 .2245 1825000.0 541752.5 Page 3 of 4 Appendix A

i i

NORTH ANNA POWER STATION - UNIT 2 i

SUMMARY

DATA 1

ALMAX = .100 VOLUME = 1825000.

VRATET = .119 VRATEM = .120 TIME DATE TEMP PRESSURE VPRS VOLUM AIRMASS 1815 1018 535.485 58.8951 .2226 1825000.0 541780.4 I 1830 1018 535.479 58.8929 .2228 1825000.0 541765.8 1845 1018 535.452 58.8921 .2217 1825000.0 541785.2 1900 1018 535.443 58.0890 .2222 1825000.0 541765.4-l 1915 1018 535.427 58.8887 .2199 1825000.0 541779.9 1930 1018 535.414 58.8848 .2211 1825000.0 541757.3 1945 1018 535.399 58.8826 .2209 1825000.0 541751.2 2000 1018 535.303 58.8009 .2199 1825000.0 541752.1 2015 1018 535.367 58.8790 .2193 1825000.0 541750.8 l 2030 1018 535.352 58.8767 .2190 1825000.0 541744.9 2045 1018 535.331 58.8748 .2184 1825000.0 541748.4 2100 1018 535.317 58.8722 .2183 1825000.0 541739.0 2115-1018 535.297 58.8698 .2180 1825000.0 541737.8 2130 1018 535.289 58.8683 .2170 1825000.0 541730.7 2145 1018 535.271 58.8659 .2168 1825000.0 541726.9 2200 1018 535.251 58.8622 .2178 1825000.0 541713.9 2215 1018 535.236 58.8626 .2147 1825000.0 541732.6 2230 1018 535.220 58.8501 .2163 1825000.0 541707.6 2245 1018 535.204 58.8547 .2169 1825000.0 541692.7 2300 1018 535.190 58.8538 .2151 1825000.0 541698.3 2315 1018 535.176 58.8505 .2156 1825000.0 541682.1 1 2330 1018 535.162 58.8487 .2147 1825000.0 541679'.7 2345 1018 535.140 58.8456 .2148 1825000.0 541673.8 0 1019 535.128 58.8428 .2147 1825000.0 541660.6 15 1019 535.112 58.8420 .2130 1825000.0 541668.6 30 1019 535.094 58.8383 .2136 1825000.0 541652.5 45 1019 535.070 58.8362 .2129 1825000.0 541658.0 100 1019 535.054 58.8337 .2124 1825000.0 541650.8 115 1019 535.032 58.8312 .2119 1825000.0 541649.9 130 1019 535.015 58.8282 .2122 1825000.0 541639.9 145 1019 535.014 58.8265 .2120 1825000.0 541625.3 200 1019 535.000 58.8244 .2123 1825000.0 541620.0 215 1019 534.989 58.8219 .2127 1825000.0 541608.1 230 1019 534.986 58.8202 .2123 1825000.0 541594.9 245 1019 534.962 58.8178 .2126 -1825000.0 541597.5 300 1019 534.962 58.8166 .2116 1825000.0 541586.1 315 1019 534.939 58.8136 .2119 1825000.0 541582.3 330 1019 534.920 58.8117 .2112 1825000.0 541584.4 345 1019 534.904 58.8095 .2106 1825000.0 541580.1 400 1019 534.893 58.8062 .2114 1825000.0 541560.3 Page 4 of 4 Appendix A l

r

APPENDIX B DATA ANALYSIS INFORMATION SECTION B.lt CONTAINMDIT TEMPERATURE STABILIZATJ001 CRITERIA SECTION B.2 INSTRUMENT SELECTION CUIDE (ISC) CAlfU1ATION SECTION B.3t DF.SCRIPTION OF BECHTEL HASS POINT ANALYSIS CAIEULATIONS SF4 TION B.4 ILRT MASS POINT DATA ANALYSIS SECTION B.5 ILRT DATA TRDID REPORT SFETION B.68 VERIFICATION TEST MASS POINT DATA ANALYSIS ,

._,m._ .

SECTION B.lt Containment Teenperature Stabilization Criteria l

l l

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

r NORTH ANNA POWER STATION - UNIT 2 TEMPERATURE STABILIZATION FROM A STARTING TIME AND DATE Ort 345 1017 1990 TIME TEMP ANSI BN-TOP-1 MS-021-5 (HOURS) ('R) AVE 4T AVE &T DIFF AVE 6T AVE P T ,

(4 HRS) (1HR) (2 HRS) (2 HRS) l

.00 538.515

.25 538.396

.50 538.282

.75 538.202 1.00 538.122 1.25 538.062 1.50 537.998 1.'75 537.944 2.00 537.894 .311* .158*

2.25 537.849 .273* .157*

2.50 537.807 .237* .090*

2.75 537.761 .220* .075* t 3.00 537.731 .196* .069*

3.25 537.706 .178* .090*

3.50 537.663 .168* ' .024*

3.75 537.630 .157* --. 04 0

• 4.00 537.601 .228 .129 .099* .146* .037*

4.25 537.578 .205 .129 .076* .136* .040*

1 4.50 537.545 .184 .118 .067* .131* .031*

4.75 537.516 .171 .114 .057* .123* .004*

5.00 537.499 .156 .103 .053* .116* .016*

5.25 537.472 .147 .106 .042* .117* .0398 5.50 537.459 .135 .086 .049* .102* .046*

5.75 537.424 .130 .092 .038* .103* .015*

6.00 537.402 .123 .096 .026* .099* .005*

6.25 537.373 .119 .099 .020* .102* .008*

6.50 $37.322 .121 .137 .016* .111* .050*

6.75 537.302 .115 .122 .0078 .107* .007*-

7.00 537.278 .113 .124 .011* .110* .007*

?.25 537.259 .112 .114 .002* 106* .015*

7.50 537.247 .104 .076 .020* .106* .053*

• 7.75 537.224 .101 .078 .024* .100* .003*

8.00 537.210 .098 .068 .030* .096* .035*

8.25 537.189 .097 .070 .027* .092* .068*

8.50 537.178 .092 .069 .023* .072* .020*

8.75 537.157 .090 .067 .023* .073* .006*

9.00 537.135 .091 .075 .016* .072* .006*

9.25 537.118 .088 .071 .017* .070* .010*

9.50 537.092 .092 .085 .006* .077* .007*

9.75 537.082 .085 .075 .011* .071* .008*

10.00 537.071 .083 .064 .019* .070* .021*

10.25 537.045 .082 .073 .009* .072* .032*

10.50 537.032 .073 .060 .012* .073* .019*'

10.75 537.014 .072 .068 .004* .072*- .008*

11.00 536.994 .071 .076 .003* .070* .006*

11.25 536.990 .067 .055 .013* .064* .049*

11.50 536.977- .068 .056 .012* .058* .008*~

11.75 536.961 --066 .053 .013* .061* .009*

12.00 536.943 .06' .051 .015* .064* .018*

12.25 536.929 .065 .061 .004*

.058* .003*

12.50 536.915 .066 .061 .004* .059* .010*

12.75 536.899 .064 .062 .003* .057* .007*

13.00 636.330 .064 063 .000* .057* .035*

13.25 536.862 .064 .067 .003* .064* .009*

13.50 536.842 .063 .073 -.010* ' .067* .009*

13.75 536.833 .062 .067 .004*

.064* .018*

14.00 536.820 .063 .059 .003* .061* .004* i kI S MPERk ESTkBIIZk HAS B SATkF D Page 1 of 1 Section B.1

.e s*mr, w

- ., _ a _.-_ *--_.-.A e-- 5 -A .- , ,.Ad', ..%.a_

l

' \

SECTION B.2 Instrument Selection Guide (ISC) Calculation l

t l

1 l

l ISG CALCULATION

( ANSI /ANS 56.8 - 1987 )

. CALIBRATION DATA -

3' SENSOR DISPLAY

1. OF SENSORS SENSITIVITY (E) REPEATABILITY (r)

TEMPERATURE (T) 18 0.0121 deg. F 0.1000 deg. F x

PRESSURE (P) 2 0.0001 psia 0.0001 psia 1

l VAPOR PRESS (PV) 5 0.0625 deg. F 0.1000_deg. F 4

i LENGTH OF-TEST (t) 8.00 hrs PRESSURE (P) 58.80 paia 6

TEMPERATURE (T) 540.0 deg. R 1

VAPOR PRESS (PV) 0.01658 psi /deg. F (at 80 deg. F)

La 0.100 wt%/ day -

INSTRUMENT MEASUREMENT ERRORS 2 2 1/2 1/2 eT = ((ET) + (rT) ) /(# of sensors) eT = 0.02374 deg. F 2 2 1/2 1/2 eP = ((EP) + (rP) ) /[# of sensors) eP = 0.00010 psia 2 2 1/2 1/2

+ (rPV) /[# of sensors) ePV = ((EPV) )

O PV = 0.00087 paia INSTRUMENT SELECTION GUIDE 2 2 2 1/2 ISG = 2400/t( 2 (eP/P) + 2 (ePv/P) + 2(eT/T) )

ISG = 0.020 wt%/ day *

- .25La = 0.025 wt%/ day Page 1 of 1

.........................g, ...................................

.. _ -. . - .. - .=

1 SECTION B.31 Description of Bechtel Mass Point Analysis calculations i

l l

1 USCRITTIOi OF 1EI3tIEL IIJE CDGUIYR ITR2VM l

l A. Prmram ani Rmort Dycririticn

1. 7ho Dochtel IUC coqutar program is used to determine the into7 rated Icakago rate of a nucicar primuy contairment structure. We is used to ccqute 1cakage rate based on input values of timo,pn:free gram air volume, containment atmosphere total pressure, drybulb terporature, ard dowpoint teparature (vater vapor pressure).

Ic&ago rate is caputed using the Absolute Method as defined in MISI/N4S 56.8-1981, " Containment System Leakago 7bstirg Requirements" ard Bl-70P-1, Rav 1, "7bsting Criteria for Integrated Leakago Rate Testing of Primuy Centalment Structures for Nuc1 car Power Plants".

We prcgram is designcd to allow the user to evaluate contairmont IcGago rate test results at the jobsite during contairment Icakage testing. Current 1chago rate values my be obtaincd at any tire dur the testirq pericd usity one of two caputational nothods, yiel three different report printouts.

2. In the first printout, the Total Time Rorort, Icakage rate is caputed frcen initial values of free air volume, contalment at:mosphere drytxL tarperature ard partial pressure of dry air, the latest values of the same parameters, ard elapsed time. These iniividually ccquted Icakage rates are statistically averaged usiin linear regression by the method of least squanes. The 7btal Time Mothcd is the ccqutational technique upon which the short duration test criteria of Mi-70P-1, Rev 1, "7bsting Criteria for Integrated icakago Pate Testing of Primary containment Stnactures for Nuclear Power Plant," are based.

3. 7ho second printout is the Miss Point Report and is based on the Riss Point Analysis Technique described in ANSI /Nis 56.8-1981,

" Containment Systern Iadage Testiry Faquirements". The miss of dry eir in the contalment is ocmputed at each data point (time) using the Equation of State, frun current values of containment atrosphore

, dryoulb taporature ard partial pressure of dry air. Contained mass is " plotted" versus tire and a regression line is fit to the data usirg the method of Icast squares. Irakage rate is detennined from the statistically derived sicpe ard intercept of the regression line.

4 The third printout, the Trund Report, is a sumiry of Icakago rate values based or. 7btal Tire ard Miss Point cmputations presented as a function of number of data points and elapocd time (test duration).

The Trend Report provides all ledage rate values required for ccrparison to the acceptance criteria of Ri-70P-1 for corduct of a short duration test.

Page 1 of 12 Section B.3

5. We pttgram generates a pridictor report based on "suygested Critoria for a Short Duration IIRP", Tod Bttwn ard Louis Estenssoro, Prtxyoiims of the First Workrhoo on Contairnent Testirn, January 18, 1982. 'Iho "prcdictor" is an estimte of the uppor bourd on the charge in mss point calculated leakage rate which will occur during the next four hours. We estimte is based on the mss point calculated leakage rates and 95% UCLs duriM the pttvious four hours.

6. Se program is written in a high level larguage ard is designed for use on a mluv,.wyJter with direct data input from the data acquisition system. Brief descriptions of program use, forullae used for leakage rata ocrputations, ard program logic are ptvvided in the follcuing paragraphs.

B. Fxplanaticn of kgom

1. We Dochtel IIRP canputer prtxyram is writtan, ' for use by experienced IIRP personnel, to determine containment integrated leakage rates based on the Absoluto ththod described in MISI/NIS 56.8-1981 ard

!!I 'IOP-1.

2. Infonnation Iceded into the program prior to or at the start of the tests

a. lamber of containment atziicoparu drybulb tanparature sensors, dewpoint tenparatutu (water vapor pressure) sensors ard pressure gages to be used in leaka<Je rata cxmputations for the specific test

b. Voluma fractions assigned to each of the above sensors

c. Calibration data for above sensors -

d. 'Ibst title

e. Msxima allowable leakage rata at test pressurs

3. tuta received ftun the data acquisition system during the test, ard used to cm puta leakage rates

a. Time and data

b. Containment atzesphere drybulb tenperatures -

c. Containment at2nos#mre pressure (s)

d. Containnent atmosphere dewpoint tenperatures

a. Containment free air volume.

4. After all data at a given time are received, a Sunmary of Measured Data report (refer to " Program logic," paragraph D, " Data" option ocenand) is printed.

Page 2 of 12

)

Section B.3 ,

1 I

i i

j l 5. If drytulb ard devpoint tenparature sensors shculd fail during the test, the data frtn the censor (s) are not used. W e volume fractions for the remainity sensors are reocrpated ard reloaded into the prtyran for use in ensuing 1cakage rata ccrputations, i

t

c. Inakame Rata Fbruilae

1. canputations Usirg the 'Ibtal Time Methodt

a. Measured leakage rata frun data PgV i = W1 Et (1)

(2)

PVi1=WEi i 2400-(W3-W) i Att W1 Solvirq for W3 ard Wi and substitutirq equations (1) ard (2) into (3) yields; ,_ ,

2400 T3i P vi j 11

= (1 - . (4) ati ( TPVg) it u re W,Wi 1 = Weight of contained mass of dry air at times tg ard ti, respectively, lha.

Tg, Ti = Containment atispere drybulb tenparature at times t 3 and t i , r+tively,

'R.

P,Pi 1 = Partial pmsure of the dry air Ww% of the containment a at times tt and ti, respectively, ps a.

V,Vi t = containment free air volume at times t .i and t , respectivgly (constant or variable during test), ft t,ti i = Tire at ist ard ith data points respectively, fr.

ati = Gapsed time from tt to t , hr.

i R = Specific gas constant for air = 53.35 ft.lbf/lbn.'R.

Li = Heasured leakage rate conputed durirg tbne tr'arvd t y to t ,iwt.%/ day.

Page 3 of 12

. Section B.3

i j

a reuos trun:ation ener, the corpater program uses the follcuirg equivalent formulations i

-2400 [ aWi )

i 4-l l

Att (W3/

{ whers j

AW1 Wi-Wg '

= m

, W1 W1 I 1

aP t + AVi_+ aPi aVi -

aTi j Vt PV

=

P1 ti .Tg_

1

, 1 +

aTi

-Tg-aP

i=VPi-Ptt , _

a vt =i-Tg ATi= Ti-v-i b.. calculated leakage rate tran regression analysis:

i., = a + b a tg (5) where L = calculated leakage rata, wt.4/ day, as determind frtn the '

regression line.

-+ a = ( I Li - b I a t i)/N (6)

' 5$b= N(IL at 2) - (IQ)(Iat i) i i (7)

N(I a ti ) .-(I a t i)2

,_ N = Nunbar of data points.

, N I= I

i=1 3

c. 95% uppar confidence limit on the calculated leakage rates i.

UCL = a + b a tg + S-Page 4 of 12 Section B.3 t

,-%...%.. c.w. 4- . . . . , _ , , , , . . , , ..,._,p.,,e,_m%%%.. . , , , . , , , . ,.,..w,, gy.,y,,;~,mdw.i,. -

,.,9,.,m.,m.,r., ,.,,.v..,w,.- -..- . .oy,w. n., e e-W g - v w' ~.w+

l l

l kher.

1 l Oct = 95) uprer confidence limit vt.4/ day, at elapsed time a tg.

1 i

l Tor stg < 24 1

t,((!Li 2 - AILi - b IL ia t )/(N-2))1/2 4

S- =

i

, (1 + 1 + ( a tg - at)2 / (Ia ti2 - (Iat )2fp))1/2 i (9a)

N khere t, = 1.95996 + 2.37225 + 2.82250 -;

N (N-2)d i

a Tor atg 2 24 l G- = t, - ( ( I L1 2 - AILi - bIL ai t )/(N-2))1/2 i

! (1 + ( a ti - aI)2/ (rati2 - (I t )2 i fg))

1/2 (9b)

N I

1.6449(N-2)2 + 3.5283(N-2) + 0.85602 i

khare t, =

(N-2)2 + 1.2209(N-2) - 1.5162 3 -

l Li = Calculated leakage rata cxmputed usirg equation (5) at total elapsed time at ,.i %/ day.

4 3

l J at = Iatt N

1 l 2. ocrputation usirg the Mass Point Methodt

a. Contained mass of dry air fran datat l ,

4 Wi = 144 P Vii E1 (10) whars All syntels as previously defined.

i t

-Page 5 of 12 Section B.3 9 -

gg , ,.7,., .- -t- ' ' " * " - " *-

1

b. Calculated Icakage rate fron regression analysis, W = a + b at 1

2 - b

! L = -2400 -

a (11) when i I, = calculated leaka9e rata, wt.4/ day, as detarmined frca the w gression line.

(12) a =

(IWi - bIat i)/N N(IWi ati ) - (EWi )(Iat i) (13) b =

]

N(I a ti ') - (I a t )i #

D data point, hr.

3ti= h tal elapsed time at time of i N = 1Atmber of data points.

q Wi

= contained mass of dry air at-i th data point, ihm, as caputed from equatica (10) .

N

% = I i=1 To reduos truncation error, the caputer program uses the followirg equivalent forntiatient aWi b -

l a =W g i + (I -

-Iat i)/N (14)

W1 W1 ,

AW I

i N (I W

$at)-I i AW$

Iati 1 W1 b (15)

= W3 2

, N(Iati ) - (Iat i)2 -

when is as previously defined.

W1

c. 95% upper confidence limit.

-2400

! UCL = (b - Sb) (16) a Page 6 of 12 Section B.3

shen UCL = 95% upper confidence limit, ht.%/ day.

l 331/2

• (N Sati 2 - (I at i)2)1/2 (17) 1.6449 (N-2)2 + 3.5283 (N-2) + 0.85602 when t, =

(N-2)2 + 1.2209 (N-2) - 1.5162 2 V2

' I (Wi - (a + b at i)1

, -N-2 .

- i

( ,

=

W1 ? I (a WiN1)2 ( g(3 gig 1))2g.

I N-2  ;

y2 (I(aWiW 1 ) ati- I(aWi W i )(Iati )#)r (18)

I(a ti2) - (I a t i)2g .

l

d. Predictort 100 (2(UCD-L) + 4 (lBl + 2 SA ))

la khere UCL = 95% upper confidence limit of mass point calculated leakage i rata at erd of test.

L = Mass point calculated leakage rata at erd of test.

B = Value of linear nyression analysis slope of msss point calculated leakage rate vs. time for last 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> of test data.

S g = Linaar regression analysis stardard deviation of slopo.

La = Allovable leakage rate.

In tens of elapsed time, a t ard 9 peint calculated leakage rate tai calculated at the end of i time interval.

Page 7 of 12 Section B.3

/

t A- 2  : Int.- B 4: hr att t

=-M 4 hr - (19)

M I 4 hr

. !ai a ti 4 hrtai 4I hr att (20)

B = +

2 H4I hrati _

(

4 hr 3 gi) 2 t

I 4 hr tai - A :

4hr Imi- a 4hr :taiati (21) sg -

(M) 2

-(M-2) (M : at 4 hr i - (4 hrxi a t )2) i Imi

= mass point calculated leakage rata evaluated using data up to time a t i.

4 hr = sumation ever last 4 haupi of test data, N

I =

N-M+1 M = number of data points for last 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> of test.

l i

l l

l Page 8 of 12 Section B.3 *

+ = "'"*'--'t'"7 *---'tr -er** *-evwv W

-r-*'w~" '-'w-wrrm're

J i

i D. Prurram frgig i 1. We Ikchtel IIRT ocrputer program Icgic ficu is controlled by a set  !

of usar options. 'the user options and a brief description of their associated function are presented below.

OPTICH '

! OttfMD BRICTION Attar startirg the program execution, the user either enters the name of the file containing previously entered data or initializes a new data.

file.

CATA Enables usar to enter raw data. When the system-requests values of time, volume, tanparature,-

pressure an:t vapor pmssurs, the user enters the appropriate data. After capleting the data entry, a sunmary is printed out. 'the user then verifies that the data were entend correctly. If errors are detected, the user will than be given the enertunity to correct the arrers. After the user verifies that the data were entered correctly,' a -

data average Corrected tenparature,Data Summari partial pressuru Report of dry of a time,ir, an,d water vapor pressure is printed.

I 'IREND A Trund Report is printed.

'IUTAL A mtal Time Report is' printed.- -

HME A Mass Point Report is printed.

TERM Enables user to sign-off te orarily or pennanently. - All data is sa@ved on a file for

restartirg.

CORR Enables user to correct previously entered data.

LIST A Sunmary Data Report is printed.

READ Enable the ocmpJtar to receive the next set of data frun the data acquisition system directly.

l PIor Dubles usar to plot sunmary data, irdividual sensor i data or air mass varuus time.

DELEIE Enables user to deleta a data point.

DEIRP Enables user to ruinstata a previously deleted data point.

VoI2PA Enable user to dwge volume fractions.

, Page 9 of 12 section B.3

• OPTICti sRtWID R UCTICtt PRED A predictor report is printod. l TD<E Erable the user to cpocity the timo interval for a rrrort or plot.

VERP Dn'olo the user to input inposcd leakage rate and calculated HRT Icakage rates at start of verification test.

E. Cerrutor Amort ard Dnta Printart MASS ICDTP REIORP Tho Mass Point Report procents leakage rate data (wtt/ day) as determined by the Ksss Point Mothed. The "Ch1culated leakago Ibte" is the value determined frm the rcgression arnlysis. 7hs " Containment Air Mass" values are the msses of dry air in the containmcuit (lin) . These air nnssos, determired frm the Ecpstion of State, are used in the regression arnlysir. ,,

7 URAL TD4E REroRP The 7btal Tire Report presents data leakage rate (wtt/ day) as determined by the Total Tire Method. The " Calculated Laakage Rata" is the value dehumined frm the regression arnlysis. The "Heasured Isakage Rates" are the leakage rate values determined using 7btal Tine calculations.

These values of Icakage rate are used in the regression analysis.

titDO REIORT The Trend Report presents leakage rates as determined by the Mass Point and 1btal Tire methods in parcent of the initial contained mss of dry air per day (wtt/ day), versus elapsed time (hours) and nunber of data

[

pku.

ITIEDICIOR REFORP 1ho predictor reports presents a prwileted upper bourd on the change in calculatad nass point loakage rate cvar the next four hours.

SUK%RY IATA Puuu l

l The Sunmry Data report presents the actual data used to calculate l leakage rates by the various nothods described in the Oxputer Program" l section of this report. The r.cVen coltums are TD{E, IATE, TEMP, l PRESSURE, VPBS, \0WME, and AIR!%SS ard contain data definod as fo11cus Page 10 of 12 Section B.3

l

1. TDE: Tim in 24-hour notation (houns and minutes).

2. CATE: Calen11r dato (month and day) .

3. TEMP Contaittent weightod-average drybulb temperature in absolute units, do7rtes Rankine ('R) .

4. PRESSURE: Partial pressure of the dry air otrponent of the containment at:mosphere in absoluta units (psia).

5. VTRS: Partial pressure of water vapor of the containment atzsphere in absoluta units (psia).

6. V011ME: Containnent free air volume (cu. ft.) .

7. AUNASS: Calculated dry air mass (lbm).

F. Ihmmuy of Weirtxi Data ard Stmenary of Cbrmcted Data 1he Sunmary of Measured tuta presents the inilvidual containment atmsphere drytxtib tenperatures, dowpoint tenperatures, absolute total pressure and free air volume measured at the time and date.

1. TIMP 1 through 77MP N are the drybulb taperatures, whern N = No. of RID's. The values in the right-hand colunn aru tanparatures (*F),

rmiltipHed by 100, as read from the data acquisiticn system (IAS).

The values in the left-hand colan are the corrected tenparaturer expressed in absoluta units ('R).

2. MES 1 through Hu:S H an the total pressures, absoluta, were N = No.

of pressure sensors. The right-hand value, in parentheses, is a number of counts as read frcza the ISS. This count value is converted to e value in psia by the ocarputar via the instrument's calibration table, counts versus psia. The left-hand colunn is the absolute total pressure, psia.

3. VFRS 1 through VPRS N are the dowpoint taperatures (water vapor pressures), where N = No. of dowpoint sensors. The values in the-right-hand colunn an taperatures ('F), alltiplied by 100 as read frta the IAS. The values in the left-hand column are the water vapor pressures (psia) frun the steam tables for saturated steam wn spxding to the dewpoint (saturation) tenperatures in the center column. .

The Summary of Corrected Data presented corrected tenperature and pressure values and calculated air mass determined as followst i

l 1. TD!PERA7URE ('R) is the volume weighted average containment i

atr@ dQtulb taperature derived frun TD!P 1 through TEMP H.

l Page 11 of 12 l Section B.3

2. CORRECTED FRIESURE (psia) is the partial pressure of the dr/ air emponent of the containment at:mosphere, absoluta. The volume-weighted average .xitainrent atnesphere water vapor pressure is subtracted frun t.a voltre weighted average total pressure, yieldirg-the partial pressure of the dry air.

3. VARR TRESSURE (psia) is the volume Weigt) tad average containment atmosphere vatar vapor pressure, absoluta,- derived fran VFRS 1:

thttugh VIRS H.

4. VolLNE (cu.- ft.) is the conthirnant free air volume.

5. CENTADNENT AIR MASS (lbn) is the calculated mass of dry air in the containment. The mass of dry air is calculated using the contairnant free air volume and the above TEMPERATURE and CDRRIUTED TRESSURE of the dry air.

i 4

Page 12 of 12 Section B.3 i

a

SECTION B.43 ILRT Mass Point Data Analysis o

3 P

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~

NORTH ANNA POWERiSTATION -1 UNIT 2 LEAKAGE RATE (WEIrHT--PERCENT / DAY)=

MASS POINT. ANALYSIS.

. TIME AND DATE'AT' START OF TEST: 180011017 1990-TEST DURATION -24.00 HOURS I TIME TEMP PRESSURE CTMT AIR 4-MASS LOSS: AVERAGE-MASSL (R) (PSIA)' MASS _(LBM); }

(LBM)- -LOSS (LBM/HR)!

..... __....___................ __................________...-- i 1800 536.800 59.0398 541780.3 1815 536.'787 59.0370- 541768.'l- 12.2 48.9-1830 536.766 59.0365 541784.6- -16.5 -8.6-1845 536.750 59.0353- 541789.6 -5.1 -12.5 1900- 536.735 59.0315- 541769.4 20.2 10.9' 1915 536.716 59.0298 541773.0 -3.6 5.8 1930- 536.695 59.0273 541772.0- 1.0_ 5.5 1945 536.680 59.0248 541763.3 8.7 9 . 71 2000 536.656 59.0229: 541771.1 .-7.8- 4.6' 2015 536.643- 59.0213 541768.4- 2.6 5.3

-2030- 536.626 59.0202- 541776.6 -8.2 1.5-2045 E36.601 59.0186- -541787.1 -10.5 -2.5

-2100 536.595 59.0155-2115 536.579 59.0143 l541763.9-541769.1-23.2 H5. 5 : j

-5.2 '3. 4  !

2130' 536.551- -59.0120 541776.1- -7.0. 1.2 2145 -536.543- -59.0096 541762.9 13.2 4.6 2200- 536.525 59.0088 541773.4 -10.4 1.7 2215 536.511 .59.0080 541779.9  :-6.6 ili 2230 536.505 59.0051 541760.5 '19.4 4.4 2245 536.486 59.0027 541756.8- 3.7 .5.CF 2300 536.476 59.0026 541765.9 -9.2 2.9 2315 536.457 59.0018 541777.9 -11.9 .5

-2330 536.442 59.0007 541783.3 -5.4~ .5 2345 536.430 58.9978 541768.1 -15.2 2.11 0 536.416 58.9954 541760.4 7. 7- 3.3 15 536.408- 58.9933 541749.6- 10.8 4.9 30 536.390 58.9949 541777.3 -27.7 ..5 45 .536.369 58.9908 541766.1 11;2. 2.1 100 :536.366 58.9900 541768.0L -1.9- 1.8 115 536.366' 58.9905 541765.5- 2.5: 2.0 130 536.349 58.9885 541765.2 .R3 2.0 145 536.346- 58.'9871' 541754.4- 10.8 3.3 200 536.327 58.9847 541751.9 2.5 3.5 215 536.318- :58.9855 541768.3I -16.4^ 1.5 230 536.319- 58.9832 541746.9 21.4 3.9-245 536.314 58'.9806 541728.3 18.6 5.91 300 536.303 58.9806 541739.0 -10.7- 4.6' 315' 536.290' 58.9778 541726.5 12.5 5.8 330 536.283 -58.9778 .541733.6- -7.1- :4.9 345? 536.267 -58.9765- 541737.2 -3.6- 4.4-400 536.256 58.9757- '541740.9' -3.7' H3 . 9 415 536.245 58.9740 -541736.2 4.7 4.3 430 536.239- 58.9716' 541720.3 15.9 5.7 445 536.228 58.9720 '541736.0 -15.7 4.1 500 536.216= 58.9704 541733.5 2.5 4 '. 3 515 L536.212 58.9679 541713.3 20.3 6.0 530 536.193- 58.9683 541739.3 -26.0- 3.6 Page 1 of 2 Section B.4

W 1

l NORTH ANNA POWER STATION UNIT 3 LEAVACE RATE (WEIGHT PERCENT / DAY)

MASS POINT ANALYSIS TIME AND DATE AT START OF.TESTt 1800 1017 1990 TEST DURATION: 24.00 HOURS TIME TEMP PRESSURE CTMT. AIR MASS LOSS AVERAGE MASS (R) (PSIA)

..............................................................)

545 536.191 58.9659 MASS (LBM) 541716.9 (LBM) 22.3 LOSS (LBM/HR 5.4 600 536.173 58.9653 541730.2 -13.2 4.2 615 536.169 58.9636 541718.9 11.3 5.0 630 536.164 58.9623 541711.4 7.5 5.5 645 536.146 58.9601 541709.2 2.2 5.6 700 536.133 58.9589 541711.3 -2.1 5.3 715 536.122 58.9574 541708.4 2.9 5.4 730 536.107 58.9563 541712.6 -4.2 5.0 745 536.103 58.9554 541709.1 3.5 5.2 800 536.082 58.9528 541706.0 3.1 5.3 815 536.077 58.9512 541697.4 8.6 5.8 830 536.054 58.9485 541695.4 2.0 5.9 845 536.041 58.9496 541719.2 -23.7 4.1 900 536.035 58.9475 541704.8 14.4 5.0 915 536.016 58.9448 541700.5 4.3 5.2 930 536.008 58.9441 541701.1 .6 5.1 945 535.994 58.9443 541718.3 -17.1 3.9 1000 535.981 58.9402 541693.0 25.3 5.5 1015 535.980 58.9400 541692.8 .3 5.4 l 1030 535.966 58.9390 541696.8 -4.0 5.1 1045 535.949 58.9364 541690.1 6.7 5.4 1100 535.950 58.9366 541692.0 -1.9 5.2 1115 535.942 58.9330 541666.0 26.0 6.6 1130 535.924 $8.9331 541685.0 -19.0 5.4 1145 535.908 58.9321 541692.5 -7.5 4.9 1200 535.903 58.9320 541697.1 -4.6 4.6 1215 535.882 58.9310 541707.9 -10.7 4.0 1230 535.884 58.9283 541682.1 25.8 5.3 1245 535.871 58.9279 541691.1 -9.0 4.8 1300 535.865 58.9258 541677.9 13.1 5.4 1315 535.853 58.9252 541683.8 -5.9 5.0 1330 535.856 58.9237 541667.4 16.5 5.8 1345 535.837 58.9226 541676.7 -9.3 5.2 1400 535.828 58.9220 541680.6 3.8 5.0 1415 535.820 58.9221 541689.4 -8.8 4.5 1430 535.817 58.9210 541682.6 6.8 4.0 1445 535.814 58.9191 541668.3 14.3 5.4 1500 535.001 58.9165 541657.1 11.2 5.9 1515 535.795 58.9167 541664.9 -7.9 5.4 4L" 535.783 58.9159 541669.6 -4.6 5.2 154' 535.777 58.9155 541671.4 -1.9 5.0 1603 535.766 58.9146 541674.3 -2.8 4.8 1615 535.757 58.9134 541673.1 1.1 4.8 1630 535.744 58.9118 541670.9 2.3 4.9 1645 535.692 58.9098 541705.7 -34.8 3.3 1700 535.637 58.9045 541712.9 -7.2 2.9 1715 535.591 58.9020 541736.5 -23.6 1.9 1730 535.561 58.8999 541747.3 -10.8 1.4 1745 535.531 58.8984 541763.0 -15.7 .7 1800 535.515 58.8955 541752.5 10.5 1.2 FREE AIR VOLUME USED (CU. FT.) =1825000.0 REGRESSION LINE INTERCEPT OBM) = 541781.5 i SLOPE (LBM/HR) a -4.5 MAXIMUM ALLOWABLE LEAKAGE RATE = .100 75% OF MAXIMUM ALI4WABLE LFAYAGE RATE = .075 THE UPPER 95% CONFIDENCE LIMIT = .022 THE CALCULATED LEAKAGE RATE = .020 Page 2 of 2 Section B.4

)l

SECTION B.5: ILRT DATA Trend Report i

i 4

4 i

i l

. . . - . - . - . - . - - . . . - . . ..- - -- - ~. -. - -. .. - ...

NORTH ANNA 1 POWER-STATION -TUNIT 2~

iTREND REPORT.

TIME AND DATE AT START 0F TEST 11800 10'17 1990 No. ENDL TOTAL TIME' ANALYSIS MASS-POINT ANALYSIS-PTS TIME MEAS. CALCULATED UCL. CALCULATED-

-UCL=

2 1815 .217 .217:'99.000 .217 99.000- j 3 1830 .038 .038~ 99.000 '.038' 1.220' .i

4. 1845 .055 .095 .844. .079- .127- l 5 1900 .048 .036 . 607- .000 -.144, 6 1915 .026 .020 .416 .014 1.101 7 -1930 .005 .011- .328 .019 . 077" 8 1945 .043 .004- .291 .033 .077 9 2000 .020 .004 ,252 -. 027- . 062 10- 2015 .023 .006- .226 -- . 0 2 6 _.053: ,

11 2030 .007 .002 -.200 .017 .041-  !

12- 2045 .011 007- .175-  :.005 .0284 13 2100 .024- .003- . 168 .010 .031- 1 14 2115 .015 .002- -.158 .011 -. 0 2 8 '

15 2130 .005 .003 .147- .008 .023 16 2145 .020- .001 .143 .011- .025 t 17 2200 .008 - ~. 0 0 2 .135: .009 .021 18 2215 .000 .004- -.127 .006: .017 19 2230 .019. .002, . 124 -.009  :.019 1, 20 2245 .022 .001 .123 .011 .021'  !

21 2300 .013 .001 .119 .011- .020; )'

22 2315 .002 .001l - .113 -- 1.009 .017:

23- 2330 .002 .003 . 108 .005 -.014.

24 2345 .009 .003 .105 .006 .013 25 0 .015 .002 .103 . 007- .014' 26 15 . 022 .000 - .10 3 ' .010:  :.017J 27 30 .002 .001 .099 .008: .014 28 45 .009 .001 .097- .008 .014 29 100 .008 .001 .094 .007 .013 30 115 .009 .001 .093~ .007-- .013 31 130 .009 .000 .091  :.007 4012 32 145 .015. .000-  :.090 .0081 .013-

! 33 200 .016 .001- .089 -.009- .014 34 215 .006 .001 .087 -.008 .013.

35 230 .017 .002 .087- .010, .014 36 245 .026 .004 .088 .012 .017 37 300 '020

. .005 .088 .013, ,018

38. 315 .026 .006 .088- o.015' .020-i 39- 330' .022 .007. .088- .016 .021.

40 345 .020 .008 .087L .017 .021-L 41- 400 . 017 .009 .087-  :.017; .021-42 415 .019 '. 009. .086 .018- .022~

43- 430' .025 .010 .086 .'C19' -.023 44 445 .018 .011 .086 .019- .023 45 500 .019 . 011 .085 .019 ~.023 46 515 .026 .012 .085 .020 .024 47 530 .016- .012 .085 .020 024 48 545 .024 .013 .085 .= 0 21 .024 49 600 .019 .013 .084 .021 .024 -

50 615 .022 .014- -.084 .021 .024 Page:1 of 2 Section B.5

_ _ _ - . ._ _ us _. ;_._...,_.w.. _._. _; _

NORTH' ANNA POWER STATION -_ UNIT 2 _

TREND REPORT TIME AND DATE AT START OF TESTi. 1800 1017 1990 NO. - ENDi TOTAL TIME ANALYSIS MASS POINT; ANALYSIS PTS TIME- MEAS. CALCULATED UCL CALCULATED UCL 51 630 .024 .014' .084- .022 .025 52 645 .025 .015 .083 .022 .025' 53 700 .024 .015 .083 .023 .026 54 715- .024 .016 -.083 .023 .026 55 730- .022 .016. .083 .023 .026 .

56 745 .023 .017- .082 .024~ .026

• 57 800 .024 .017 .082 .024 .026 58 815 .026 .018- .082- .024 .027 ,

59 830 .026 .018 .082 .025 .027 '

60 845 .018 .018. .081 .024 .027 61 900 .022 .0181 .081 .024 .027  ;

62 915- .023 .019 .081 .025: .027 '

63 930 .023 .019 .080 .025 .027-64 945 .017 .019: .080 .024 .026 65 1000 .024 .019 .080 .025 .027 66 1015 .024- .019 .079 .025 .027 67 1030 .022 .020 .079 .025 .027 68 1045 .024 .020 .079 .025' .027 69 1100- .023 .020 .078 .025 .027 70 1115 .029 .021 .079 .026 .027 71 1130 .024 .021 .078 .026 .027 72 1145 .022 .021 .078 .026 .027.

73 1200 .020 .021 .078 .025 .027

• 74 1215 .018 .021 .077 .025 .027-75 1230 .024- .021 .077 .025 .027 76 1245 .021 .021 .076 .025 .027-77 1300 .024 .021 .076 .025 .027 78 1315 .022 .021 .076 .025 .027 79 1330 '026

. .021 .076 .025 .027 80 1345 .023 .022 .075- .025 .027-81 1400 .022 .022 .075 .025 . 027-82 1415 .020 .022 .075 .025 -.026 i 83 1430 .021 .022- .074 .025 .026 l 84 .1445 .024 .022 .074 '.025 .026 85 1500 .026 .022 074 .025 .027 86 1515 .024 .022 .074 .025 .027 87 1530- . 023 .022' .074 .025' .027 88 1545 .022 .022 .073 .025 .026 89 1600 -.021 .022 . 073 .025_ _.026 90 1615 .021 .022 .073 .025 .026 91 1630 .022 .022 .072 .025- .026 l

92 1645 .015 .022 .072 .024 .026 93 1700 .013 .022 .071 .024 .025 94' 1715- .008 .021 .071 .023 -.024 '

95. 1730 .006 .021 .070 .022 .024 96 1745 .003 .020 .069- .021 .023 97 1800 .005 .019 .027 .020 .022 Page 2 of 2 Section B.5

SECTION B.63 Verification Test Mass Point Data Analysia l

l l

i

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l

' NORTH ANNA POWER-STATION - UNITL2' LEAKAGE RATE (WEIGHT PERCENT / DAY)

-MASS POINT ANALYSIS' :l TIME AND DATE:AT START OF TESTt-1900-1018 1990 I TEST DURATIONt: 9.00 HOURS TIME TEMP PRESSURE- 'CTMT. AIR. MASS: LOSS , AVERAGE MASS

-(R) -(PSIA)- MASSL (LBM) (LBM)? LOSS (LBM/HR).

l 1900 535.443 58.8890 541765.4 . . _

i 1915 535.427 58.8887 541779.9 ' -14.5 -58. 0. i L

1930: 535.414 58.8848- 541757.3- 22.6 -16.2' ,

-1945 535.399 58.8826 .541751.2 6.1 - 18.9 L 2000 535.383 58.8809 541752.1 .9. 13'.3 2015 535.367: 58.8790- 541750.8 1.3' 11.6-2030 535.352 58~8767~

. 541744.9- 5.9- 13.6 2045. 535.331' 58.8748 .541748.4; L-3.5 9.7 ,

2100 -535.317 58.8722 541739.0~ 9.4 13.2 i 2115 535.297 58.8698- 541737.8- 1. 3 - 12.3 2130 535.289 58.8683 541730.9 6.8 ' 13 .~ 8

'2145 535.271 58.8659 541726.9 4.0L 14.0 2200- 535.251 58.8622 541713.9 13.1 17.2 2215 535.236 58.8626 541732.6- -18.8 10.1-  !

2230 535.220 58.8581 .541707.6 125.1- 16.5 2245 535.204 58.8547 541692.7 14.9 .19.4 2300 535.190 58.8538 541698.3 -5.7 '16.8-

'2315. 535.176 -58.8505 541682.1 16.3 19.6 2330 535.162 58.8487 541679.7 2.4 19.0 o 2345 535.140 58.8456 541673.8 5.9 19.3 0 535.128 58.8428 541660.6 ~13.1 21.0  ;

15 535.112- 58.8420 541668.6= -7i9- ~18.4 '

30 535.094- 58.8383 541652.5 16.1' :20.5 i

, 45 535.070 58.8362 .541658.0 -5.5 18.7 ,

100 535.054- 58.8337 541650.8 7.2 19.1.

115 535,032- 58.8312 541649.9~ .9 .18.5-130 535.015 58.8282.. 541639.9 9.9 19.3 145- 535.014 58.8265 541625.3 14.7 .20.8 L 200 535.000_ 58.8244 541620.0 5.3 120.8

! 215 534.989 58.8219 541608.1~ 11.9- 21.7 230 534.986' 58.8202 541594.9. 13.2 ~22.7 245 '534.962 58.8178 5 41597 =. 5 - -2.6 . 21' .' 7 300 534.962 -58.8166 541586.1 11.4- 22.4- '

315 534.939 '58.8136 541582.3 3.9' 22'2.

330 534.920 58.8117 54158 4 .~ 4 ' -2.2 21.3 345 534.904 58.8095 541580.1 4.3 .21.2 400 534.893 58.8062 541560.3 19.8 -22.0 FREE AIR VOLUME-USED~(CU. .FT.) __

=1825000.O REGRESSION LINE INTERCEPT (LBM): = 541'783.3 STOPE (LBM/HR) .

= -23.4 VLF. rCATION TEST LIAKAGE RATE-UPPER LIMIT =: .145' VER111 CATION TEST ' LEAKAGE RATE ' LOWER LIMIT = .095 THE CALCULATED LEAKAGE RATE = .104 Page 1 of I Section B.6 L ,

___ _ _ . . _ . _ _ . _ . ._ - ._.. ~ _ . . . . _ = _ . . . . . . .. . - _ . . . . ..._._ __. .._

h

.APPENDIK C-r GRAPHS I

SECTION C.1: CONTAINMENT AIR MASS-PLOT FOR TEST DURATION .

SECTION C.2 RFCRESSION LINE OF ILRT CONTAINMENT AIR MASS h

SECTION-C.3: ILRT MASS POINT LEAKAGE RATE AND UCL _

SECTION C.4: REGRESSION LINE OF VERIFICATION TEST CONTAINMENT AIR MASS SECTION C.5: VERIFICATION TEST MASS POINT LEAKAGE RATE i

o 5

. - . _ . , . . . - , - . , , , , . 4- . . . , . . . _ ..,4 . . . . , , , , r, .._,

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

i SECTION C.1: Containment Air Mass Plot For Test Duration l

I

NORTH ANNA POWER STATION - UNIT 2 AIRMASS LBM START TIME 400 DATE 1017 END TIME 400 DATE 1019 542160.000

~

STABILIZATION 542040.000 --

541920.000 --

~

ILRT UERIFICATIDM 541800.000 ---

541680.000 --

~

FAN TRIP 541560.000  : .. : : :.: : : : : : : : : : : : : : : : : : : : ii: : : : : l ': : : : :: : : : : : : lI ELAPSED TIME- = 48.00 HOURS

__ .. - - _ _ = - _ _ - - _ . - - - - _ _ - - - _ _ _ - - _ _ -_--- _ _ __-----__ _ _ _ _ _

SECTION C.2: Regression Line Of 1LRT Containment Air Mass 1

I l

l 1

l l

am e .Ea....gsM.#,.h_a.-uA7aA e mi & a.-m=s. m. m a 4 e- 4-ad .,,__,4 A.g 4 ..iem..._.iJ ,

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• i i i i g i i i O O O O O O O O O O O O O. O. O. O. O. O.

--O O O O O O O O O O O O CD f5 -O N (Y) vs =t ve O4 =1 =1 N N N N N N O O O O O O l

S W ION C.38 ILRT Mass Point LeakaEe Rate And UCL I

l i

-m+ m y e m .ww,.-..p-p'- .y-. v.Wem er =

_ . . ~ . _ . . _ . _ - _ _ _ _ . . _ , _ _ _ . . . _ . . . . - . . _ . _ _ _. - __,,_._..___m._..,_ . . _ . . _ _ - . - .

E a

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l SECTION C.4 Regression Line Of Verification Test Containment Air Mass

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! NORTH ANNA POWER STATION - UNIT 2 AIRMASS LBM. REGRESSION LINE AND-VERIFICATION TEST LIMITS  ;

START TIME 1900 DATE 1018 END TIME 400 DATE 1019 541783.300 >

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4 541547.600 --

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.00 l2.25 ELAPSED TIME = 9.00 HOURS

l SF.CTION C.5: Verification Test Mass Point Leakage Rate i

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. NORTH ANNA POWER STATION - UNIT 2' MASS POINT LEAKAGE RATE AND VERIFICATION TEST LIMITS - X/ DAY _

START TIME 1900 DATE 1018 END TIME 400 DATE 1019 ,t i .250 i

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

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' APPENDIX D l

IDCAL LEAKAGE RATE TESTINO

SUMMARY

lt SECTION D.1 TYPE B TESTING SL4 MARY -

-SECTION D.21 TYPE C TESTING SUDMARY'-

SECTION D.3: TYPE B AND TYPE C INSTRUMENT ERROR' ANALYSIS. i e

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SECT 10rl D.1: Type B Testing Summary 1

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SI;CTION D.1: Type B Testing Su m ary The following charts summarize the Type B leakage testing performed on Unit 2 components from April 1989 to the November 1990 Unit 2 startup.

All Type B leakage testing for the outage was performed at a pressure range of 44.1 psig to 45.0 psig.

Page 1 of 3 Section D.I

i E1cetrical Penetration Type B Testing Summary Outage Total Leakage (SCFH) 1 Spring 1989 4.84 3.03 Fall 1990 1.89 1.02 j Containment Fuel Transfer Tube Type B Testing Summary Outage Total Leakage (SCFH)

Spring 1989 Fall 1990  !

Page 2 of 3 Section D.1

Containment Air Locks Type B Testing Sumanary Leakages (SCFH) and Test Dates Emergency Escape Air Lock Personnel Air Lock In Equipment Hatch May 1989 3.10 ! 0.23 0.14 1 0.14 October 1989 11.0 1 0.23 7.50 2 0.23 April 1990 5.50 1 0.23 3.10 0.23 October 1990 6.40 0.16 2.30 1 0.16 i

I Page 3 of 3 l Section D.1

SECTION D.2: Type C Testing Summary _

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l SECTION D.2: Type C Testing Summary l

The following chart summarizes the Type C Icakago testing performed on Unit 2-components from April 1989 to the November 1990 Unit 2 startup. The leakages in the chart represent the maximum pathway leakages for the penetrations.

All Type C icakage testing for the outage was performed at a pressure range of 44.1  !

psig to 45.0 psig.

Page 1 of 7 Section D.2 1 <

l 1

Containment Piping Penetrations Type C Testing Summary Leakages -(SCFH)

Pene-tration SPRING 1989 FALL 1990 Number Outage INTERIM Outage 1 0.07 1 0.07 3.90 1 0.23 2 0.07 2 0.07 0.90 1 0.23 4 0.07 1 0.07 2.00 2 0.23 5 0.07 1 0.07 2.60 1 0.23 7 0.07 0.07 0 t 0.16 0.49 : 0.07 8 0.14 1 0.14 0 1 0.16 9 >241 0 1 0.16 0.07 t 0.07 10 >241 0 2 0.07 0.60 1 0.07 11 >241 0 ! 0.04 0.07 1 0.07 12 0.07 1 0.07 1.10 0.04 13 0.07 2 0.07 0.30 t 0.04 14 0.07 0.07 1.40 1 0.07 15 0.07 1 0.07 0 0.16 16 >241 0 1 0.16 0.07 t 0.07 NOTES: 1 For outages, the second figure is "As Left," when different than "As Found".

2. The Spring 1989 outage data is included for reference.

J i

l Page 2 of 7 l Section D.2

Containment Piping Penetrationn Type C Testing Summary (cont)

Leakages (SCFH)

Pene-tration SPRING 1989 FALL 1990 Number Outage INTERIM Outage 17 >241 0 1 0.16 2.40 1 0.07 18 0.07 0.07 0 1 0.16 19 0.07 1 0.07 74.0 1 5.14 2.80 1 0.07 20 0.07 0.07 0 1 0.04 22 0.07 1 0.07 0.20 ! 0.04 24 2.50 1 0.23 0 1 0.07 0.90 1 0.16 25 0.14 1 0.14 0 1 0.16 26 0.14 ! 0.14 0 1 0.04 27 0.14 1 0.14 0 1 0.04 28 0.07 1 0.07 0.1 ! 0.16 31 6.30 1 0.70 34.0 1 0.70 0.04 ! 0.04 0.30 1 0.16 32 0.85 1 0.07 0.50 1 0.07 33 0.56 1 0.07 0 0.16 34 35.0 ! 0.70 0 1 0.04 0.35 2 0.07 38 0.50 ! 0.07 2.90 0.07 0.04 1 0.04- 0 2 0.16 Page 3 of 7 l

i Section D.2 i

l

Containment Piping Penetrations Type C Testing Summary (cont) leakages (SCFil)

Pene-tration SPRING 1989 FALL 1990

,Nimber Outage INTERIM Outage 39 0.14 1 0.14 9.80 1 0.70 0 1 0.16 40 1.28 1 0.07 7.00 1 0.70 0.35 1 0.07 0 1 0.16 41 1.58 1 0.07 1.10 1 0.07 0 1 0.07 42 0.07 1 0.07 010.16 0.04 1 0.04 43 0.07 1 0.07 0 1 0.04 44 0.07 0.07 0 1 0.04

.45 >241 0 1 0.16 0.60 1 0.07 46 >241 >257 0.07 i 0.07 0.40 0.04 47 0.40 i 0.07 0.20 1 0.04 48 0.07 1 0.07 0 1 0.16 50 0.07 0.07 0.20 0.07 53 0.07 1 0.07 1.60 0.07 0.10 1 0.04 54 0.07 1 0.07 0 1 0.04 SSD 0.04 1 0.008 0 1 0.04 56A 1.20 0.07 1.50 0.07 0.40 t 0.07 0.05 1 0.04 Page 4 of 7 Section D.2

su Containment Piping Penetrations Type C Testing Summary (cont)

Leakages (SCFH)

Pene-tration SPRING 1989 FALL 1990 Number Outage INTERIM Outage __,

56B 6.00 2 0.70 0 1 0.07 0.04 1 0.04 56C 1.20 1 0.07 0.30 1 0.07 0 1 0.16

)

56D 0.07 1 0.07 0 1 0.07 SiA 0.008 1 0.008 0 1 0.04 57B 0.04 1 0.04 0 1 0.04 57C 0.04 1 0.04 0 1 0.04 60 0.50 1 0.07 1.50 0.07

< 61 0.07 1 0.07 7.50 1 0.07 62 0.35 1 0.07 0.30 1 0.07 1

0 0.07 63 0.35 1 0.07 0 1 0.16 0.50 1 0.07 64 0.07 1 0,07 0.40 1 0.04 66 0.14 1 0.14 0 1 0.04 67 0.14 1 0.14 0 1 0,04 70 0.07 1 0.07 1.60 1 0.04 71 0.07 1 0.07 >257 1.20 1 0.04 79 0.006 t 0.006 0 1 0.07 Page ' of 7 Sec sn D 2

~

Containment Piping Penetrations Type C Testing Summary (cont)

Leakages ($Cni)

Pene-tration SPRING 1989 FALL 1990 Number Datage INTI: RIM Outace 80 0.006 0.006 0 2 0.07 81 >206 0 1 0.07 0.07 1 0.07 82 0.006 2 0.006 0 1 0.07 83 0.006 1 0.006 0 1 0.07 84 0.006 1 0.006 16.0 1 0.70 0 1 0.07 85 >206 12.0 1 0.70 13.0 1 0.70 0 1 0.07 86 >206 010.07 0.07 1 0.07 89 3.20 1 0.07 1.10 1 0.16 1.60 1 0.035 0.70 1 0.23 90 3.40 1 0.70 2.1 1 0.70 4.35 1 0.14 5.7 1 0.16 91 81.2 1 4.82 5.0 2 0.70 8.58 i 1.40 6.5 2 0.16 52 1.30 1 0.07 1.30 1 0.07 (8/89) 0 2 0.04 93 0.78 1 0.07 0.3 1 0.04 0.07 i 0.07 Page 6 of 7 Section D.2

Containment Piping Penetrations Type C Testing Summary (cont)

Leakagen (SCHI)

Pene-tration SPR11:0 1989 FALL 1990 Number Outage INTERIM Outare 94 0.71 1 0.07 30.0 1 0.70 1.70 1 0.23 0 1 0.07 97A 0.04 1 0.04 0 1 0.04 97B 0.04 1 0.04 0 1 0.04 97C 0.07 1 0.07 0 1 0.04 98A 0.08 1 0.07 0 i 0.16 98B 0.07 1 0.07 0 t 0.04 100 10.0 1 0.70 0 1 0.16 0.07 1 0.07 103 0.07 1 0.07 0 1 0.04 104 0.07 1 0.07 0 1 0.04 105A 0.008 1 0.008 0 1 0.04 0.04 1 0.04 105B 0.04 1 0.04 0 1 0.04 1050 0.07 1 0.07 0 1 0.04 1050 0.07 1 0.07 0 1 0.04 106 0.14 0.14 0 1 0.16 0.04 1 0.04 108 0.07 1 0.07 0 1 0.16 109 0.07 1 0.07 131,5 a 3,14 0 1 0.16 111 0.07 1 0.07 1.0 1 0.07 0 1 0.16 112 0.55 0.14 0.3 1 0.16 113 0.07 1 0.07 0 1 0.16 114 0.07 1 0.07 0 1 0.16 Page 7 of 7

__ . _ . .Soction_D.2 , _

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

d

) SF.CTION D.31 Type B and Type C Instrument Error Analysis d

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SECTION D.3: Type B and Type C Instrument Error Analysis I

i Instrument error analyses were performed for the Type B and C testing I results. The Type B testing on the electrical penetrations and the fuel )

transfer tube are performed using a bubbler rig in which the number of bubbles per unit time are counted. The conversion from number of bubbles to SCril is sufficiently conservative so that no additional error penalty needs to be incorporated. As is shown in the charts in Section D.1 and Section D.2 the reported leakages for the air lock Type B tests and the Type C teste reflect the instrument error analyses performed for the Fall 1990 Unit 2 Icakage testing results.

Page 1 of 1 Section D.3

f 4

e APPENDIX E 1

4 j thCAL LFAKACE RATE TESTING FAILURE SUltlARY 1

J SECTION E.1: TYPE B TESTING FAILURE SUtstARY SECTION E.2 TYPE C TESTINC FAILURE SUlttARY i

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SECTION E.1: Type B Testing Failure Susumary 1

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SECTION E.1: Type B Testing Failure Summary I

During the time period of April 1989 to the November 1990 Unit 2 Cycle 8 start-up, there have been no Type B testing failures of equal to or greater than 0.60L,.

H l

Section E.1 Page 1 of 1 l

l

Sf:CTION E.28 Type C Testing Failure Susanary I

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

SECTION E.2 Type C Testing Failure Summary The following chart summarizeo the Type C testing results for the Unit 2 containment isolation valves which have recorded Type C leakages of at least 0.60La during the time period from April 1989 to the November 1990 Unit 2 start-up.

Pene- Recorded Work tration Test Leakage Order Number Valve # Date (SCFH) Number Description of Repair ,

46 2-CH-FCV-2160 08/29/90 >257 094282 Replaced plug and stem assembly and seat ring.

71 2-RS-20 09/03/90 >257 116059 Replaced rubber seat. s l

Page 1 of 1 Section E.2

_ _ .