Text

Reactor Containment Bldg Integrated Leak Rate Test. W/
	ML20077G794
Person / Time
Site:	Quad Cities
Issue date:	03/02/1991
From:	Bax R; COMMONWEALTH EDISON CO.
To:	Murley T; NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM), Office of Nuclear Reactor Regulation
References
	RLB-91-160, NUDOCS 9107020299
	Download: ML20077G794 (55)
	v • d • e

.

t RLB-91-160 June 21, 1991 Mr. Thomas E. Hurley Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C.

20555

SUBJECT:

Quad-Cities Nuclear Power Station Reactor Containment Building Integrated Leak Rate Test NRC Docket No. 50-254, DPR-29, Unit One Enclosed please find the report " Reactor Containment Building Integrated Leak Rate Test, Quad-Cities Nuclear Power Station, Unit One, February 28 - March 2, 1991" and the related appendices describing the Type A test. The performance of this test was witnessed and inspected by representatives of the NRC Region III Office.

This report is submitted to you in accordance with the requirements of 10 CFR 50, Appendix J.Section V.B.I.

The information contained in Appendix A of this report is intended to comply with requirements of 10 CFR 50, Appendix J Section V.B.3.

According to 10 CFR 50, Appendix J.

Section III.A.6, the test schedule for the next Type A test is to ba reviewed and approved by the' Commission. 'The next' Type A test'for Quad-Cities Unit One is scheduled for the fall of 1992; the Commission's review and approval of this schedule is hereby requested.

Very truly yours, COMMONWEALTH EDISON COMPANY Quad-Cities Nuclear Power Station SA R. L. Bax Station Manager i

RLB/DFS/vmw Attachment cc:

A.B. Davis, Regional Administrator T. Taylor, Senior Resident Inspector

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.i REACTOR CONTAINHENT BUILDING INTEGRATED LEAK RATE TEST QUAD-CITIES NUCLEAR POWER STATION UNIT ONE FEBRUARY 28 - MARCH 2, 1991 l

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TABLE OF CONTENTS PAGE TABLE AND FIGURES INDEX.......................

2 INTRODUCTION.

5 A,

TEST PREPARATIONS A.1 Type A Test Procedures...................

5 A.2 Type A Test Instrumentation.................

5 A.2.a.

Temperature....................

9 A.2.b.

Pressure......................

9 A.2.c.

Vapor Pressure..................

10 A.2.d.

Flow.

..................10 A.3 Type A Test Measurements.................

10 A.4 Type A Test Pressurization................

11 B.

TEST HETH00 B.1 Basic Tectnique.....................

13 B.2 Supplemer tal Verification Test..............

13 i

B.3 Ins trument Error Analysi s.................

13 i

t C.

SEQUENCE OF EVENTS C.1 Test Preparation Chronology................

14 C.2 Test Preparation and Stabilization Chronology.......

15 C.3 Measured Leak Rate Phase Chronology............

16 C.4 Induced Leakage Phase Chronology...

..........16 C.5 Depressurization Phase Chronology.............

16 0483H L

TABLE OF CONTENTS (CONTINUED)

PAGE D.

TYPE A TEST DATA D.1 Measured Leak Rate Phase Data..............

17 0.2 Induced Leakage Phase Data 17 E.

TEST CALCULATIONS..

32 F.

TYPE A TEST RESULTS F.1 Heasured Leak Rate Test Results.............

32 F.2 Induced Leakage Test Results...............

32 F.3 Pre-Operational Results vs. Test Results.........

33 F.4 Type A Te s t Penal ti e s..................

34 F.5 Evaluation of Instrument Failures............

34 F.6 As-Found Type A Test Results...............

35 APPENDIX A TYPE B AND C TESTS...............

36 APPENDIX B COMPUTATIONAL PROCEDURES............

37 l

APPENDIX C INSTRUMENT ERROR ANALYSIS 49 I

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TABLES AND FIGURES INDEX PAGE TABLE 1 Instrument Specifications................

6 TABLE 2 Sensor Physical Locations.....

7 TABLE 3 Measured Leak Rate Phase Test Re"Jits........

18 TABLE 4 Induced Leakage Phase Test Results..........

21 FIGURE 1 Idealized View of Drywell and Torus...........

8 Used to Calculate Free Air Volumes FIGURE 2 Measurement System Schematic Arrangement.......

12 FIGURE 3 Measured Leak Rate Phase - Graph of Calculated....

22 Leak Rate and Upper Confidence Limit FIGURE 4 Measured Leak Rate Phase - Graph of

. 23 Dry Air Pressure FIGURE 5 Measured Leak Rate Phase - Graph of Volume......

24 Heighted Average Containment Vapor Pressure FIGURE 6 Measured Leak Rate Phase - Graph of Volume......

25 Heighted Average Containment Temperature FIGURE 7 Induced Leakage Phase - Graph of Calculated......

26 Leak Rate FIGURE 8 Induced Leakage Phase - Graph of Volume........

27 Heighted Average Containment Temperature FIGURE 9 Induced Leakage Phase - Graph of Volume........

28 Heighted Average Containment Vapor Pressure FIGURE 10 Induced Leakage Phase - Graph of...........

29 Dry Air Pressure FIGURE 11 Graph of Reactor Water Level.............

30 Through Testing Period FIGURE 12 Graph of Torus Water Level..............

31 Through Testing Period 0483H - _ - _ _

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

l j

INTRODUCTION This report presents the test method and results of the Integrated Primary Containment Leak Rate Test (IPCLRT) successfully performed on February 28 - March 2, 1991 at Quad-Cities Nuclear Power Station, Unit One.

The test was performed in accordance with 10 CFR 50, Appendix J, and the Quad-Cities Unit One Technical Specifications.

i l

A full duration 24 hour2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months test was conducted using the Mass Plot Method.

Using the above test method, the total primary containment integrated leak rate was calculated to be 0.6035 wt %/ day at a test pressure greater than 48 PSIG.

The calculated leak rate was within the 0.750 wt %/ day acceptance criteria (75% of L ).

The associated upper 95% confidence limit was 0.6069 wt %/ day.

A The supplemental induced leakage test result was calculated to be 1.50 wt

%/ day. This value should compare with the sum of the measured leak rate phase result (0.6035 wt %/ day) and the induced leak of 8.34 SCFM (1.0224 wt %/ day).

The

~

calculated leak rate of 1.50 wt %/ day lies within the allowable tolerance band of 1.6259 wt %/ day 1 0.250 wt %/ day.

SECTION A - TEST PREPARATIONS A.1 Type A Test Procedure The IPCLRT was performed in accordance with Quad-Cities Procedure QTS 150-1 Rev.18, including checklists QTS 150-52, S4, SS, S6, S10, S12, S13 S17, S18, S19 S22 through S29, and subsections T2, T6, T8, T10, T11, T13. T14, TIS, and T16.

Approved temporary procedures 6642 was written to allow the use of alternate compressors to pressurize the primary containment.

These procedures were written to comply with 10 CFR 50 App ~endix J ANS/ ANSI N45.4-1972, and Quad-Cities Unit One Technical Specifications.

A.2 Type A Test Instrumentation i

Table One shows the specifications for the instrumentation utilized in the IPCLRT.

Table Two lists the physical locations of the temperature and humidity sensors within the primary containment.

Figure 1 is an idealized view of the drywell and suppression chamber used to calculate the primary containment free air subvolumes.

Instrumentation calibrations were performed using NBS traceable standards. Quad Cities procedure QTS 150-9 was used to perform the calibration.

I 0483H !

1 i

i TABLE ONE INSTRUMENT SPECIFICATIONS l

6

[

I INSTRUMENT MANUFACTURER MODEL NO.

SERIAL NO.

RANGE ACCURACY REPEATABILITY i

I Precision 1 015% Rdg 0

Pressure 10141-2 Gages (2)

Volumetrics PPM-1000 10255-1 0.4 - 100 PSIA 1 001% F.S.

j 1 005% F.S.

0 0

.SEE TABLE Thermistors (30)

Volumetrics 418905000 TWO 50" - 135*F 0.25*F 0.01*F i

i I

SEE l

Lithium TABLE Dewcells (10)

Volumetrics Chloride TWO 93-212*F 0.25*F 0.01*F i

+

Pall Trinity 1 0*F 1 1*F j

Thsrmocouple Micro 14-T-2H 0-600*F 2

I j-i Fischer i

I Flowmeter

& Porter 10A3555S 8405A0348A1 1.15-11.10 scfm 1 111 scfm i

i i

Level Indicator 555111BCAA f'

j.

LT 1-6468 GEMAC 3AAA 0-60" H O 2

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l 1

TABLE TWO SENSOR PHYSICAL LOCATIONS THERMISTER NO.

SERIAL NUMBER SUBVOLUME ELEVATION AZIMUTH

1 10533-23 1

670'0" 180*

2 11340-12 1

670'0" 0*

3 10602-17 2

657'0" 20' 4

10533-8 2

657'0" 197*

5 10602-5 3

639'0" 70*

6 10602-29 3

639'0" 255' 7

10533-9 4(Annular Ring) 643'0" 55' 8

10602-8 4

615'0" 225' 9

10533-27 5

620'0" 5'

10 11340-1 5

620'0" 100*

11 11340-11 5

620'0" 220*

12 10533-3 6

608'0" 40*

13 11340-4 6

60P'0" 130*

14 10533-29 6

608'0" 220*

15 10602-14 6

608'0" 310*

16 10602-9 7

598'0" 70*

17 11778-18 7

598'0" 160*

18 11778-6 7

598'0" 250*

19 11778-7 7

598'0" 340' 20 11778-15 8

587'0" 10*

21 11778-9 8

587'0" 100*

22 11778-17 8

587'0" 190*

23 11778-2 8

587'0" 280*

24 10533-15 9(CRD Space) 595'0" 170*

25 11778-5

~9(CRD Space))

580'0" 170*

26 11778-11 10(Torus) 578'0" 70' 27 11778-1 10(Torus) 578'0" 140*

28 10602-11 10(Torus) 578'0" 210' 29 11778-4 10(Torus) 578'0" 280*

30 11778-8 10(Torus) 578'0" 350*

Thermocouple (Inlet to 11(Rx Vessel) clean-up HX)

DEWCELL NO.

SERIAL NUMBER SU8 VOLUME ELEVATION AZIMUTH 1

11778-30 1

670'0" 180*

2 11778-12 2,3,4 653'0" 90*

3 10533-7 2,3,4 653'0" 270*

4 11778-13 5

620'0" O'

5 11778-27 6

605'0" 45' 6

10602-22 7

600'0" 220' 7

11778-25 8,9 591'0" O'

8 11778-10 8,9 591'0" 202*

9 11778-14 10 578'0" 90*

10 11778-26 10 578'0" 270*

Thermocouple (Saturated) 11 0483H,

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Idealized View of Drywell and Torus Used to Calculate Free Volumes h

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v FIGURE 1 0483H !

A.2.a.

_ Temperature The location of the 30 thermistor's was chossn to avoid conflict with loct.1 temperature variations and thermal influence from metal structures.

A temperature survey of the containment was previously performed to verify that the sensor locations were representative of average subvolume conditions.

The Thermtstors are hermetically sealed, glass encaosulated units manufactured by YS! Inc.

These sensors have a recommended operating range between -110 and 390 degrees F.

A stability of better than 0.018 degrees F per ten months can be expected when the units are stored at or below 212 degrees F.

Interchangeable Thermistors, model 46043 were chosen.

YS!

certifies each sensor to follow the same Resistance verses Temperature curve within 0.1 degrees F over the range of 50 to 135 degrees F.

Each se;.',or is connected to a signal conditioning card.

The Thermistor resistance is converted by this card to a known voltage.

The voltage output from the cards is a function of the resistance in.

The Thermistor's change in resistance with temperature is very nonlinear.

Therefore, the variation of output voltage with temperature is nonlinear.

In order to allow direct reading of temperature values from the OAS, two sixth order polynominal curve fits are programmed into the OAS's EPRO'45. As recommended in ANS 56.8, the OAS output and display has a resolution of 0.01 degrees F.

A.2.b.

PressuLe Two volumetrics PPH-1000 Precision Pressure Monitors were utilized to measure total containment pressure.

Each precision pressure gauge was calibrated from 0.4-100.0 PSIA.

Primary containment pressure was sensed by the pressure gauges in parallel through a 3/8" tygon tube connected in parallel with a drywell pressure sensing instrument.

Each instrument contains a pressure-sensing element that delivers an electrical frequency (in relation to the applied pressure) to a microprocessor circuit.

The microprocessor corrects the signal for nonlinearity, offset, scaling, and temperature effects and displays the corrected pressure value on a 5-1/2 digit 1.ED readout.

l l

0483H L

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The sensor is the vibrating cylinder type.

The cylinder is a vibrating mechanical system. A vacuu.n reference in maintained on the outside of the i

cylinder.

The pressure differential across the wall creates stress on the 1

wall varying the natural resonant frequency of vibration.

The resonant j

frequency depends upon the physical properties of the element such as mass, l

stress, elasticity, dimensions and temperature.

The cylinder is made from a l

special nickel tron alloy, and closely controlled manaufacturing techniques eliminate mass, dimension, and elasticity effects.

Temperature is measured usin-) a calibrated diode and corrected by the microprocessor.

t j

The sensor's electronic circuit conditions the frequency wave and sends it to the pulse rate converter board which counts the period.

The period is sent in a 1641t word to the microprocessor controlled panel meter (MPM).

i The sensor's temperature sensing diode voltage is converted to a 15-bit digital signal using the analog-to-digital converter in the MPM.

The pressure is calculated by the MPM and displayed in appropriate Units on the 5-1/2 digit t

l seven-segment LED display.

+

a Each PPM-1000 was calibrated from 0.40-100.0 PSIA by volumetrics on j

Decembar 12, 1990.

A.2.c.

Vapor Pressure Teh lithium chloride dewcells were used to determine the partial pressure due to water vapor in the containment.

The dewcells were calibrated by i

volumetrics on December 12, 1990, e

A.2.d.

Flow j

A rotameter flowmeter, Fischer-Porter serial number 8405A0348A1, was used 3

for the flow me6surement during the induced leakage phase of the IPCLRT.

The flowmeter was calibrated by Fischer-Porter on September 21, 1990, to within 1. of full scale (0.9 - 11.4 SCFM) bsing NDS traceable standards, to standard j

11 atmospheric conditions.

l Plant personnel continuously monitored the flow during the induced leakage phase and corrected any minor deviations from the induced flow rate of 8.34 SCFM by adjusting a 3/8" needle valve on the flowmeter inlet.

The flow meter outlet was unrectricted and vented to the atmosphere, i

A.3 Ty.pe A Test Measuremeht l

Th> IPCLRT was performed utilizing a direct interface with the station prime computer.

This system consists of a Data Acquisition System-(DAS) and a multiplexer in contatament.

Upon initiation of data acquisition cycle, the OAS reads the selected OPERATE mode of single, continuous, or interval, and either block or sequential scan. Once the system has determined which char. els to scan (user-defined), it adaresses the analog scanner to select the first channel for sampling.

This address information (three BCD digits from the Printer / Scanner Interface Card) is transmitted at RS-232C voltage levels.

0483H.

1 The scanner selects the channel and routes the analog signal to the Analog i

to Digital Converter (ADC) housed in the DAS.

After a relay stabilizing time of approximately ten milliseconds, the Central Processing Card (CPU) initiates the ADC, Although the ADC is capable of 20 conversions per second, the actual 5

scan rate is 10 per second because the CPU has numerous other functions to i

perform.

Upon conversion request, the ADC resets and selects a 0.IV or 1.0V full srale conversion factor as designated by the CPU.

The CPU is then interrupted by the ADC to read the coraried data and the ADC status word.

The status i

j word indicates the polarity C ' the input voltage and if it was an overrange.

The data is stored in a buffer in RAM.

The CPU addresses the scanner for data from the next channel, and tW acquisition process continues until all the data from the channels prog n moed to be scanned is stored in the buffer.

)

Numerical calculation of the raw data may now begin.

The CPU selects the j

most recent data entry from the buffer and divides it by 65536, the full scale count value of the ADC, to obtain the voltage value.

The CPU checks the channel's format byte to determine the channel's assigned engineering unit (0-15).

That unit's associated slope and intercept values (m and b) are user-accessible in CMOS RAM).

The slope (m) is multiplied by the voltage value (x), then added to the intercept (b) to obtain the final data value (y).

The final data value is printed out on all enabled outputs.

The printout includes the channel number, the final data, the assigned engineering unit, and the channel header. Digital input data, headers, date, and time are also printed out.

l The PRIME computer was used to compute and print the leak rate data using i

either the ANSI /ANS mass plot method (ANSI /ANS 56.8), a total time method based on ANSI /ANS n45.4,,or the BN-TOP-1 method.

Key parameters, such as total time measure leak rate, volume weighted dry air pressure and temperature, and absolute pressure were monitored using a Tektronix 4208 terminal and a Tektronix plotter.

Plant personnel also plotted a large number of other parameters, including reactor water level and temperature, dry air mass, volume weighted partial pressures and temperature, total time leak rate, i

statistically averaged leak rate and UCL, and all sensor outputs in engineering units.

In all cases, data ns plotted hourly and computer summaries were obtained at 10 minute time intervals.

The plotting of data and l

the computer printed summaries of data allowed rapid identification of any problems as they might develop.

Figure 2 shows a schematic of the data acquisition system.

s A.4. Type A Test Pressurization Two Atlas Copco 1500 SCFM, Diesel powered oil-free air compressors were used to pressurize the primary containment. The compressors were physically located outside the Reactor Building.

The compressed air was piped using flexible metal hose to the Reactor Building, through an existing four inch fire header penetration, and pipert to a temporary spool piece that, when installed, allowed the pressurization of the drywell through the "A"

containment spray header.

The inboard, containment spray isolation valve, MO-2-1001-26A was open during pressurization. Once the containment was pressurized, the MO-2-1001-26A valve was closed and the spool piece was

)

i removed and replaced with a blind flange.

l l

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L

Measurement System Schematic Arrangement FLOWMETER (30) THERMISTORS (10)

DEWCELLS s

PRESSURE h

5 GAUGES E

OPEN TO i

CONTAINMENT T

h 3

P r

o DAS V

MULTIPLEXER

[

y 22 y

Q_

PRIME

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FIGURE 2 0483H.

I SECTION B - TEST METHOD B.1 Basic Techntaue The absolute method of leak rate determination was used.

The absolute f

method uses the 1. deal gas laws to calculate the measured leak rate, as defined in ANSI N45.4-1972.

The inputs to the total containment dry air mass calculation include subvolume weighted containment temperature, subvolume weighted vapor pressure, and total absolute air pressure.

Each time a data set is collected (approximately every 10 min.) during the Type A test, the time of collection and the total containment dry air mass are calculated and recorded.

The Mass Plot method calls for performing a least squares fit of l

the mass points.

This fit deteraines the slope and Y-Intercept of the line l

that minimizes the total amount of scatter of the points along it.

The slope divided by the Y-Intercept of the line yields the statistically averaged leak rate.

The upper confidence limit is defined as the statistically averaged leak rate plus the product of the one-sided 95% T-distributton and the standard deviation of the regression line slope.

The mathematical expressions t

for these calculations are found in Appendix B.

B.2 Supplemental Verification Test The supplemental verification test superimposes a known leak of approxt-mately the same magnitude as LA (8.16 SCfM or 1.0 wt %/ day as defined in Technical Specifications).

The degree of detectability of the combined leak rate (containment calculated leak rate plus the superimposed, induced leak rate) provides a basis for resolving any uncertainty associated with measured leak rate p'ase of the test.

The allowed error band is 3,25% of L.

i A

[

There are no references to the use of upper confidence limits to evaluate the acceptability of the induced leakage phase of the IFCLRT in the ANS/ ANSI standards.

l B.3 Instrument Error Analysis An instrument error analyt;s was performed orior to the test.

The instrument system error was calculated in two parts.

The first was to determine the system accuracy uncertainty.

The second and more important calculation (since the leak rate is impacted most by changes in the containment parameters) was performed to determine the system repeatability uncertainty. The results were 0.032 wt %/da3 and 0.0048 wt %/ day for a 24-hour test, respectively.

Inese values are traersely proportional to the test duration.

The instrumentation uncertainty is m d only to illustrate the system's ability to measure the required parameters io calculate the primary containment leak rate.

The mathematical derivation of the above vdues can be found in Appendix C.

There were no instrument failurds during the performance of this test.

0483H L

SECTION C - SEQUENCE OF EVENTS C.1 Test Preparation Chronology The pretest preparation phase and containment inspection was completed on February 27, 1991 with no apparent structural deterioration being observed.

Major preliminary steps included:

1) Blocking open three pairs of drywell to suppression chamber vacuum breakers.

2) Installaticn of all IPCLRT test equipment in the suppression chamber.

3) Completion of all repairs and installations in the drywell affecting primary containment.

4) Venting of the reactor vessel to the drywell by opening the manual head vent line to the drywell equipment drain sump.

5) Installation of the IPCLRT data acquisition system including computer programs, instrument console, locating instruments in the drywell, and associated wiring.

6) Completion of the pre-test valve line-up.

This test was conducted at the end of the refuel outage to test the containment in an "As Left" condition with repairs and adjustments.

The Station has an exemtpion to 10CFP50, Appendix J requirements to allow performing the test at the end of the refuel outage, l

0483H

-14 L

C.2 Test Pressurization and Stabilization Chronology DATE TIME EVENT 2-28-91 0908 Began Pressurizing Containment.

1015 MSIV room snooped.

No leaks observed.

1045 Leak discovered at X-25 bellows.

1110 Test director inspected leak to access magnitude. Considered to be serious.

1115 Station Management and Operating notified of leak.

Continue pressurization while evaluating.

1130 Radiation Protection foreman to have frequent samples in X-25 area.

Corner roome, torus area, and top of torus snooped.

No leaks observed.

)

1145 Remainder of accesible penetrations in the reactor building were snooped.

No leaks observed.

2-28-91 1300 Inspection of leak with F. Maura (NRC).

Decision to complete pressurization.

1435 Pressurization completed, i

0483H.

...__y

C.3 Heasured Leak Rate Phase Chronology l

2-28-91 1930 Containment temperature stable below 0.5 degrees F/hr for the last 4.0 hr.

Rx water level stable below 1.25 in/hr.

for the last 1.0 hr.

Rx water temperature stable below 2 cegrees F/hr. for the last hr.

1930 Began measured phase base data set #318 of buffile.

3-1-91 1932 Terminated measured leak rate phase at 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months 2 min., batedata set #463 of buffile.

Calculated leakrate was 0.6035 wt%/ day and decreasing over time.

The mass plot 95% upper confidence limit was 0.6069 wt%/ day.

C.4 Induced Leakage Phase Chronology 3-1-91 2032 Valved in flowmeter at 8.34 SCFH (equivalent to 1.0224 wt%/ day).

Began induced leakage phase at data set #469 of buffile.

3-2-91 0032 Terminated induced phase.

Base data set #493 of buffile calculated leak rate of 1.500 wtt/ day.

0.5,0* pressurization Phase Chronology 3-2-91 0115 Began depressurization using procedure for venting through the standby gas treatment system.

3-2-91 0500 Depressurization complete.

0730 Technical Staff personnel entered drywell.

No apparent structural damage and instruments still in place.

1200 Instruments removed from the drywell and torus.

0483H.

v.

SECTION D - TYPE A TEST DATA D.) Heasured Leak Rate Phase Data Graphic results of the test are found in Figures 3-7.

The statistically averaged leak rate and upper confloence limit using the ANS/ ANSI 56.8-1981 standard are graphed in Figure 3.

A summary of the computed data using the ANS/ ANSI standard is found in Tables 3 and 4.

D.2 Induced Leakage Phase Data A summary of the computed data for the Induced Leakage Phase of the IPCLRT is found in Table 4.

The calculated leak rate and upper confidence limit using the Mass Plot method are shown in Figure 7.

Containment conditions during the Induced Leakage Phase are presented graphically in Figures 8-10, r

/

I I

B 0483H l

MEASURED LEAK RATE TEST RESULTS TABLE 3 CALC.

UPPER DATA TEST AVE.

DRY AIR LEAK CONF!DENCE SET TIME DURATION TEMP.

PRESSURE RATE LIMIT 318 19:30:04 0.000 87.0 62.7629 319 19:32:04 0.033 87.0 62.7620 320 19:42:04 0.200 87.0 62.7562 0.5184 0.1091 321 19:52:04 0.366 87.0 62.7495 0.6548 0.8412 322 20:02:04 0.533 86.9 62.7437 0.6937 0.7847 323 20:12:04 0.700 86.9 62.7383 0.6737 0.7298 324 20:22:04 0.866 86.9 62.7314 0.6799 0.7170 325 20:32:04 1.033 86.9 62.7259 0.6849 0.7116 326 20:42:04 1.200 86.9 62.7201 0.6746 0.6972 327 20:52:04 1.366 86.8 62.7145 0.6678 0.6867 328 21:02:04 1.533

.86.8 62.7091 0.6664 0.6816 329 21:12:04 1.700 86.8 62.7042 0.6574 0.6728 330 21:22:04 1.866 86.8 62.6989 0.6448 0.6630 331 21:32:04 2.033 86.8 62.6928 0.6473 0.6629 332 21:42:04 2.200 86.7 62.6870 0.6506 0.6644 333 21:52:04 2.366 86.7 62.6806 0.6501 0.6621 334 22:02:04 2.533 86,7 62.6746 0.6511 0.6616 335 22:12:04 2.700 86.7 62.6685 0.6519 0.6612 336 22:22:04 2.866 86.6 62.6629 0.6521 0.6604 337 22:32:04 3.033 86.6 62.6574 0.6512 0.6587 338 22:42:04 3.200 86.6 62.6515 0.6508 0.6576 339 22:52:04 3.366 86.6 62.6460 0.6478 0.6547

' 340

~23:02:04

~ 3'.533

~86 ~6 62.6407 0.6459 0.6524 341 23:12:04 3.700 86.5 62.6347 0.6465 0.6524 342 23:22:04 3.866 86.5 62.6295 0.6460 0.6514 343 23:32:04 4.033 86.5 62.6245 0.6454 0.6505 344 23:42 04 4.200 86.5 62.6194 0.6432 0.6483 345 23:52:04

?. 366 86.5 62.6141 0.6412 0.6464 346 00:02:04 2.533 86.5 62.6092 0.6391 0.6444 347 00:12:04 2.700 86.4 62.6039 0.6376 0.6427 348 00:22:04 2.866 86.4 62.5995 0.6353 0.6405 349 00:32:04 5.033 86.4 62.5942 0.6343 0.6393 350 00:42:04 5.200 86.4 62.5890 0.6345 0.6392 351 00:52:04 5.366 86.4 62.5848 0.6322 0.6371 352 01:02:04 5.533 86.4 62.5794 0.6316 0.6363 353 01:12:04 5.700 86.4 62.5739 0.6317 0.6361 354 01:22:04 5.866 86.3 62.5702 0.6304 0.6348 355 01:32:04 6.033 86.3 62.565.1 0.6291 0.6335 356 01:42:04 6.200 86.3 62.5604 0.6291 0.6332 357 01:52:04 6.366 86.3 62.5560 0.6285 0.6324 358 02:02:04 6.533 86.3 62.5511 0.6278 0.6316 359 02:12:04 6.700 86.3 62.5473 0.6270 0.6307 360 02:22:04 6.886 86.3 62.5423 0.6268 0.6304 361 02:32:04 7.033 86.3 62.5396 0.6265 0.6299 362 02:42:04 6.800 86.3 62.5353 0.6266 0.6299 363 02:52:04 7.366 96.3 62.5317 0.6269 0.6300 0483H.-.-

364 03:02:04 7.533 86.3 62.5279 0.6272 0.6302 365 03:12:04 7.700 86.3 62.5241 0.6282 0.6312 366 03:22:04 7.866 86.3 62.5208 0.6288 0.6318 367 03:32:04 8.033 86.3 62.5178 0.6293 0.6322 368 03:42:04 8.200 86.3 62.5148 0.6298 0.6326 369 03:52:04 8.366 86.2 62.5114 0.6302 0.6392 370 04:02:04 8.533 86.3 62.5074 0.6312 0.6339 371 04:12:04 8.700 86.3 62.5041 0.6320 0.6348 372 04: 22:04 8.866 86.3 62.5008 0.6329 0.6357 373 04: 32:04 9.033 86.3 62.4979 0.6336 0.6365 374 04:42:04 9.200 86.3 62.4948 0.6344 0.6372 375 04: 52:04 9.366 86.3 62.4924 0.6350 0.6378 376 05:02:04 9.533 86.3 62.4894 0.6354 0.6382 377 05:12:04 9.700 86.3 62.4862 0.6361 0.6388 378 05:22:04 9.866 86.3 62.4836 0.6363 0.6389 379 05:32:04 10.033 86.3 62.4804 0.6368 0.6393 380 05:42:04 10.200 86.3 62.4778 0.6371 0.6396 381 05:52:04 10.366 86.3 62.4753 0.6375 0.6399 382 00:02:04 10.533 86.3 62.4723 0.6376 0.6400 383 06:12:04 10.700 86.3 62.4693 0.6379 0.6403 384 06:22:04 10.866 86.3 62.4663 0.6380 0.6403 385 06:32:04 11.033 86.3 62.4635 0.6382 0.6404 386 06: 42:04 11.200 86.3 62.4607 0.6382 0.6404 387 06:52:04 11.366 86.3 62.4573 0.6384 0.6405 388 07:02:04 11.533 86.3 62.4548 0.6387 0.6407 389 07:12:04 11.700 86.3 62.4525 0.6386 0.6406 390 07:22:04 11.866 86.3 62.4497 0.6386 0.6405 391 07:32:04 12.033 86.3 62.4468 0.6387 0.6406 392 07:42:04 12.200 86.3 62.4440 0.6388 0.6407 393 07:52:04 12.366 86.3 62.4417 0.6388 0.6406 394 08:02:04 12.533 86.3 62.4395 0.6386 0.6404 395 08:12:04 12.700 86.3 62.4371 0.6387 0.6404 396 08:22:04 12.866 86.3 62.4351 0.6383 0.6400 397 08:32:04 13.033 86.3 62.4324 0.6379 0.6396 398 08:42:04 13.200 86.3 62.4295 0.6378 0.6394 399 08:52:04 13.366 86.3 62.4265 0.6376 0.6393 i

400 09:02:04 13.533 86.3 62.4241 0.6376 0.6392 401 09:12:04 13.700 86.3 62.4217 0.6373 0.6389 402 09:22:04 13.866 86.4 62.4194 0.6370 0.6386 403 09:32:04 14.033 86.4 62.4166 0.6367 0.6383 404 09:42:04 14.200 86.4 62.4137 0.6365 0.6380 405 09:52:04 14.366 86.4 62.4114 0.6362 0.6377 406 10:02:04 14.533 86.4 62.4087 0.6360 0.6375 407 10:12:04 14.700 86.4 62.4082 0.6354 0.6370 408 10:22:04 14.866 86.4 62.4037 0.6352 0.6367 409 10:32:04 15.033 86.4 62.4015 0.6348 0.6364 410 10:42:04 15.200 86.4 62.3993 0.6345 0.6360 411 10:52:04 15.366 86.4 62.3971 0.6340 0.6356 412 11:02:04 15.533 86.4 62.3947 0.6337 0.6353 413 11:12:04 15.700 86.4 62.3924 0.6332 0.6348 414 11:22:04 15.866 86.4 62.3915 0.6326 0.6343 415 11:32:04 16.033 86.4 62.3878 0.6322 0.6335 416 11:42:04 16.200 86.4 62.3851 0.6318 0.6335 417 11:52:04 16.366 86.4 62.3826 0.6314 0.6331 418 12:02:04 16.533 86.4 62.3805 0.6309 0.6327 0483H !

l

419 12:12:04 16.700 86.4 62.3782 0.6304 0.63?.2 420 12:22:04 16.866 86.4 62.3776 0.6297 0.6316 421 12:32:04 17.033 86.4 62.3734 0.6293 0.6311 422 12:42:04 17.200 86.4 62.3711 0.6288 0.6307 i

423 12:52:04 17.366 86.5 62.3684 0.6284 0.6303 424 13:02:04 17.533 86.5 62.3661 0.6279 0.6298 425 13:12:04 17.700 86.5 62.3638 0.6274 0.6293 426 13:22:04 17.866 86.5 62.3637 0.6266 0.6287 427 13:32:04 18.033 86.5 62.3588 0.6262 0.6282 428 13:42:04 18.200 86.5 62.3572 0.6256 0.6277 429 13:52:04 18.366 86.5 62.3551 0.6251 0.6272 430 14:02:04 18.533 86.5 62.3526 0.6246 0.6267 431 14:12:04 18.700 86.5 62.3510 0.6239 0.6261 432 14:22:04 18.866 86.5 62.3483 0.6233 0.6256 433 14:32:04 19.033 86.5 62.3474 0.6227 0.6249 434 14:42:04 19.200 86.5 62.3453 0.6224 0.6246 435 14: 52:04 19.366 86.5 62.3456 0.6223 0.6245 436 15:02:04 19.533 86.5 62.3465 0.6222 0.6243 437 15:12:04 19.700 86.5 62.3493 0.6221 0.6242 438 15:22:04 19.866 86.5 62.3513 0.6220 0.6241 439 15:32:04 20.033 86.5 62.3589 0.6214 0.6236 440 15: 42:04 20.200 86.5 62.3587 0.6210 0.6231 441 15:52:04 20.366 86.5 62.3583 0.6204 0.6226 442 16:02:04 20.533 86.5 62.3572 0.6197 0.6220 443 16:12:04 20.700 86.5 62.3556 0.6189 0.6212 444 16:22:04 20.866 86.5 62.3537 0.6180 0.6205 445 16:32:04 21.033 86.5 62.3530 0.6171 0.6197 446 16: 42:04 21.200 86.6 62.3486 0.6163 0.6190 447 16:52:04 21.366 86.6 62.3461 0.6156 0.6183 448 17:02:04 21.533 86.6 62.3438 0.6148 0.6175 449 17:12:04 21.700 86.6 62.3415 0.6140 0.6169 450 17:22:04 21.866 86.6 62.3411 0.6131 0.6160 451 17:32:04 22.033 86.6 62.3362 0.6124 0.6153 l

452 17:42:04 22.200 86.6 62.3342 0.6116 0.6146 453 17:52:04 22.366 86.6 62.3323 0.6108 0.6138 454 18:02:04 22.533 86.6 62.3291 0.6100 0.6131 455 18:12:04 22.700 86,6 62.3272 0.6093 0.6124 456 18:22:04 22.866 86.6 62.3263 0.6084 0.6116 457 18:32:04 23.033 86.6 62.3216 0.6077 0.6110 458 18:42:04 23.200 86.6 62.3196 0.6070 0.6103 459 18:52:04 23.366 86.6 62.3167 0.6064 0.6097 460 19:02:04 23.533 86.6 62.3147 0.6057 0.6090 461 19:12:04 23.700 86.6 62.3122 0.6049 0.6082 462 19:22:04 23.866 86.6 62.3111 0.6041 0.6075 463 19:32:04 24.033 86.6 62.3060 0.6035 0.6069 0483H __._

t INDUCED LEAKAGE PHASE TEST RESULTS l

l TABLE 4 CALC.

UPPER DATA TEST AVE.

ORY AIR LEAK CONFIDENCE SET T!HE DURATION TEMP.

PRESSURE RATE LIMIT 469 20:32:04 0.000 86.6 62.2739 470 20:42:04 0.167 86.6 62.2671 471 20:52:04 0.333 86.6 62.2595 1.512 2.463 472 21:02:04 0.500 86.6 62.2526 1.505 1.651 473 21:12:04 0.667 86.6 62.2473 1.453 1.550 474 21:22:04 0.833 86.6 62.2385 1.486 1.556 475 21:32:04 0.000 86.6 62.2322 1.484 1.531 476 21:42:04 1.67 86.6 62.2237 1.533 1.597 477 21:52:04 0.333 86.6 62.2155 1.556 1.611 478 22:02:04 0.500 86.6 62.2098 1.541 1.587 479 22:12:04 0.667 86.6 62.2008 1.554 1.593 480 22:22:04 0.833 86.6 62.1953 1.548 1.581 481 22:32:04 2.000 86.6 62.1888 1.538 1.568 482 22:42:04 2.167 86.6 62.1822 1.530 1.556 483 22:52:04 2.333 86.6 62.1756 1.526 1.549 484 23:02:04 2.500 86.6 62.1701 1.513 1.537 485 23:12:04 2.667 86.6 62.1617 1.511 1.533 1

486 23:22:04 2.833 86,6 62.1549 1.514 1.533 487 23:32:04 2.000 86.6 62.1488 1.509 1.527 488 23:42:04 2.167 86.6 62.1418 1.506 1.522 489 23:52:04 2.333 86.6 62.1359 1.502 1.517 490 00:02:04 2.500 86.6 62.1274 1.503 1.516 491 00:12:04 2.667 86.6 62.1205 1.504 1.517 492 00:22:04 2.833 86.6 62.1143 1.502 1.514 493 00:32:04 4.000 86.6 62.1071 1.500 1.511 l

l 0483H j

HEASURED LEAK RATE PHASE GRAPH OF CALCULATED LEAK RATE AND UPPER CONFIDENCE LlHIT MASS PLOT LEAKRATES VS T!ME CALCULATED LEAK R4E Normel Test 95 % UPPER CONflDENCE UWIT Allowed Leck Rote 1.10 1.10 S

- i.oo i...

o.to o.go b

8 4

oJO o.40 5

0.75 La Liinit b

H h4 95% Upper confidence Limit j

Calculated Leak Rate o.so

" o.no o.4o o.4a o.ro s.se 7.co 10.60 13.e0 17.30 so.co 34.00 HOUR 5 SOFTWARE ID NUMBER: GNO1405-0.0 FIGURE 3 0483H.

_ _. _ _ _ _ _ _.. ~. _. _. _ _ _ _ _ _ _. _ _ _ _ _. _ _.

I MEASURE 0 LEAK RATE PHASE GRAPH OF DRY AIR PRESSURE l

I i

a t

CONTAINMENT DRY AIR PRESSURE VS TIME Normel Teet 4

l l

42.80 l

l 42.80 42.70 41.70 et 90 4L60 42.lKi 4L50

..0

...t.0 62.30 6140 I

42.20 6L20 42.10 l

l l

l 4L10 0.00 3.30 7.10 10.80 14.40 18.00 21.06 tL20 HOURS SOFTWARE ID NUMBER: GNO1405-0.0 i

l FIGURE 4 0483H.

l

.I i

l l

MEASURED LEAK RATE PHASE GRAPH OF VOLUME WEIGHTED AVERAGE CONTAINMENT VAPOR PRESSURE 4

I CONTAINMENT VAPOR PRESSURE VS TIME Normel Test 1

0.4404 I

0.4400 0.4350 0.4354 0.4300 0.4300 1

0.4250 0.4290 0.4200 0.4200 t

0.41M 0.4150 I

i i

0.4100 0.4100 t

0.40s0 0.4oso c.00 3.m 7.14 lo.so 14.4o 1s.00 ti.m as.ao HOUR 5 SOFTWARE ID NUMBER: GNO1405-0.0 FIGURE S 0483H l l

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

\\

l HEASURED LEAK RATE PHASE GRAPH Of VOLUME i

HEIGHTED AVERAGE CONTAINHENT TEMPERATURE I

I CONTAINMENT AIR TEMPERATURE V5 TIME i

Normel Teet i

suo s7.so t

S7.00 67.6o M.80 M.90 N.$o w.00 w

w j

u.so

" u.se 4

u.ro

" u.20 u.00

' n.oo M.to 65.00 0.00 s.ao 7.to 1e.no 14.4o is.co 31.e0 tuo HOUR 5 SOFTWARE ID NUMBER: GNO1405-0.0 '

FIGURE 6 0483H,

_.-,3--.-_,~%.,-r.,,%

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

INDUCED LEAKAGE PHASE t

GRAPH OF CALCULATED LEAK RATE 4

I I

MASS PLOT LEAKRATES VS TIME CALCULATED LEAK RATE V6flfl001l0h Itti UPPER AND LOWER BOUNDS Torget Leck Pote t.90 1.H Upper Acceptance Limit i.00

" 1.M 1.70 "1.70 Targe,t Leak Rate p

w8 1.40 8

1.D0 h

H Calculated Leak Rate a

1.00

'1.60 1.40 1.40 Lwer Acceptance Limit 1.30 1.30 1.20 1.20 0.33 0.93 1.43 1.13 1.73 3.33 3A3 4,53 HOURS SOFTWARE ID NUMBER: G NO 1405-0.0 l

FIGURE 7 0483H.

L

INDUCED LEAKAGE PHASE GRAPH OF VOLUME WEIGHTED AVERAGE CONTAINMENT TEMPERATURE CONTAINMENT AIR TEMPERATURE VS TIME Verlflootton Test i

M oo M.s0

" M.00 M.60 1

M.70 M.70 w

i.e 84.00

".a gg

.m_

e d

W M.50

" M.80 i

M.40 M.40 M.30

" M.30 M.20 l

0 l

44.20 0.00 0.00 1.10 1.M 1.40 3.00 3.00 4.90 HOURS SOFTWARE ID NUMBER: G N O 1405-0.0 FIGURE 8 i

l 0483P - -

i INDUCED LEAKAGE PHASE GRAPH OF VOLUME WEIGHTED AVERAGE CONTAINMENT VAPOR PRESSURE CONTAINMENT VAPOR PRESSURE VS TIME Verlflcotton Test 1

0.4324 0.4320 0.4304 0.4300 0.4240 0.4290 0.4t M O.4200 g

E 0.4244

- 0.4240 0.4220 0.4220 0.4200 0.4200 l

0,4180 l

0,4130 0.00 0.00 1.20 1.M L40 3.00 3.00 4.90 HOURS SOFTWARE 10 NUMBER: GNO1405-0.0 FIGURE 9 0483H -

l 1

e-m,,

.----,,,-e-w,-.,-,-m.--

m.e,~<-,ww.,,,.,,-.y+-n-n-en, m---

y,,-

,,,-,.,+w,--w+rwww,.m---n--,wwec,-----

-n,---

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

INDUCE 0 LEAKAGE PHASE ORAPH OF DRY AIR PRESSURE I

CONTAINMENT DRY AIR PRESSURE VS TIME Verlfl001lon Test f

62.3000 s u ooo 42.356o "a u soo i

l 42,2000 "4L2000 42.1500

" 4L1600 g

g I

IC 22 42.1000 "4L1000 i

42.0500

" 4LO500 42.0000 4 LOD 00 41.9500 l

l 41,8500 0,00 0.00 1.10 1.40 1.40 3.00 3.00 4.90 HOURS SCFTWARE ID NUMBER: GNO1405-0.0 FIGURE 10 0483H u-

~

GRAPH OF REACTOR WATER LEVEL THROUGH TESTING PERIOD 1

f RX VESSEL LEVEL VS TIME Normel Test se.60 es.co

's4.00 s4.00 07 00 92.00

<n 90.0o 90.00 5m se.oo as.oD se.oo

" a6.00 r4.oo

" s4.co e

s2.co st,00 0.00 3.00 7.10 10.00 14.40 10.00 21.00 tL20 HOURS SOF"TWARE 10 NUMBER: GNO1405-0.0 4

FIGURE 11 4

0483H '

l GRAPH OF TORUS HATER LEVEL THROUGH TESTING PERIOD TORUS LEVEL VS TIME Normal Test

-2.1500

-1.1500

-2.t s oo -

- -t.t soo

-2,1700

' -1.1700 f

I h

-2.t 00 -

l Q

-t.tsoo l

M

,l

- 2.1s00 --

Ii l

b b

1

-2.t soo

- 2.2000

-2.2000

-2.2100

" -1.2100

-2.22 oo

- 2.220o l

o.00 4.30 s.60 tn.so 17.to 21.so as.ao 30.1o HOURS SOFTWARE ID NUMBER: GNO1405-0.0 FIGURE 12 0483H -

l

SECTION E

, TEST CALCULAT'ONS Calculations for the IPCLRT are based on the Mass Plot test method and are found in the functional requirements specification CECO Generic ILRT computer code software ID No. GN1405-0.0, Document 10 No. ILRT-FRS-0.0.

A reproduction of the Mass Plot method can be found in Appendix B.

SECTION r - TYPE A TEST RESULTS i

F.1 Measured Leak Rate Test Results Based on the data collected over 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months on approximately 10 minute Intervals the statistically averaged leak rate was found to be 0.6035 wt%/ day with a 95% upper confidence limit of 0.6069 wt%/ day.

F.2 Induced leakage Test Results A leak rate of 8.34 scfm (1.0224 wt %/ day) was induced on the primary containment for this phase of the test.

The leak rates during this phase of the test were as follows.

Statistically Averaged Leak Rate 0.6035 0.6035 (Heasurs4 Leak Rate Phase)

Induced Leak (8.3* scfm) 1.0224 1.0224 Allowed Error Band

+0.2500

-0.2500 1.8759 1.3759 Statistically Averaged Leak Rate 1.500 wt %/ day (Induced Leak Rate Phase)

Therefore, the required test accuracy was satisfied.

The verification test was 7.7% different than the predicted result (0.6035 + 1.0224).

The magnitude of this difference is within the allowed error band and demonstrates that the instrumentation and modeling of the containment is adequate to measure a leakage with a magnitude of the allowable limit.

0483H __

F.3 Pre-Operational Results vs Test Results Past IPCLRT reports have compared the results of each test with the pre-operational IPCLRT, performed April 20-21, 1971. Over the last 20 years, different test equipment, sensor locations and number of sensors, test methods, and test duration have been used.

This test yielded results which were substantially larger than in previous years.

The source of the increase has been identified as resulting from the leak discovered in the X-25 bellows.

This leakage was later measured to be 137 SCFH (0.2798 wt%/ day). When this leakage is removed from the measured leak rate the result, 0.3270 wt%/ day, compares favorably with recent tests, and indicates that no significant deterioration in containment integrity has occured.

The X-25 bellows were replaced prior to the Unit One startup.

TEST DURATION CALCULATED LEAK RATE STATISTICALLY AVE.

TEST DATA (HOURS)

(BN-TOP-1)

LEAK RATE (ANSI /ANS)

April, 1971 24 Not Available 0.111 February, 1976 24 Not Available 0.3175 December, 1982 12 0.4532 0.3796 July, 1984 24 0.4281 0.2297 March, 1986 12 0.2286 0.2286 December, 1987 6

.3194 0,3162 November, 1989 6

.3786 0.3714 March, 1991 24 0.6069 l

0483H

.- -_ ~_.

F.4 TYPE A TEST PENALTIES Ouring the type A test, there were a number of systems that were not drained and vented outside the containment.

The isolation valves for these systems or penetrations were not " challenged" by the type A test.

AS LEFT MINIHUM PATHWAY LEAKAGE SCFH Wil/ DAY Primary Sample Valves 0.0 0.00000 ACAD 0.31 0.00063 RHR A 0.5 0.00102 Feedwater A 0.4 0.00082 feedwater B 0.5 0.00102 Oxygen Analyzer 0.4 0.00082 TIP Per.;e Check Valves 0.0 0.00000 CAM A.

B 0.0 0.00000 RBCCH Return 16.0 0.03268 RBCCW Supply 1.8 0.00368 Core Spray A 2.6 0.00531 Core Spray B 0.4 0.00082 SBLC 60 0.01226 RWCU 0.65 0.00133 Shutdown Cooling 1.32 0.00270 Clean Demin To Drywell 0.5 0.00102 Totals 38.38 0.0784 This penalty increases the type A test result to 0.6819 wt%/ day with an upper confidence limit of 0.6853 wtt/ day.

F.5 EVALUATION OF INSTRUMENT FAILURES There were no instrument failures during the test.

6 0483H -.

_ ~ _ _

F.6 AS FOUND TYPE A TEST RESULTS The following table summarizes the results of all type B and C testing, as well as the IPCLRT results to arrive at an "As found" type A test result.

Since the total is more than the 0.750 wt %/ day, the present schedule of performing a type A test every refuel outage must be maintained.

SUMMARY

OF ALL CONTAINHENT LEAK RATE TESTING DURING UNIT TWO REFUEL OUTAGE SPRING 1990 AS FOUND (SCFH)

AS LEFT (SCFH)

HINIMUM PATHHAY HINIMUM PATHWAY LEAKAGE LEAKAGE (1) MSIV's @ 25 PSIG 13.8 13.8 (2) MSIV's converted 23.9 23.9 to 48 PSIG*

(3) All fype C Tests 161.0 58.5 (Except MSIV's)

(4) All Type B Tests 170.1 21.4 TOTAL (2 + 3 + 4) 355.0 103.8 (1) Type A Test Integrated Leak Rate Test)

= 0.6035 wt %/ day (2) Upper Confidence Limit of Type A Test Result

- 0.6069 wt %/ day (3) Correction for Unvented Volumes During Type A Test

= 0.0784 wt %/ day (4) Correction for Repairs Prior to Type A Test 0.2332 wt%/ day (As Found - As Left)**

Leak Rate at 25 PSIG converts to Leak Rate at 48 PSIG using conversion ratto of i.00.

REFERENCE ORNL - NISC - 5, Oak Ridge National Laboratory, Aug.1965, page 1C.55.

- The As Found does not include the X-25 bellows leakage (137 SCFH).

0483H 35-

APPENDIX A TYPE B AND C TESTS Presented herin are the results of local leak rate tests conducted on all penetrations, double-gasketed seals, and isolation valves since the previous IPCLRT in November, 1989.

lotal leakage for double gasketed seals and total leakage for all penetrations and isolation valves following repairs satisfied the Technical Specification limits.

0483H l

OTS 100-S1 REFUEL OUTAGE LOCAL Revision 8 1

LEAK RATE TEST SIM4ARY December 1989 UNIT Grv6 h*H TEST DIRECTOR hM OPERATING ENG.

Wh TECH STAFF SUPV.

'F4&n~ 4. -

U AS F00pm (SCFH)

AS LEFT (SCFH)

VALVE (S)/

MINI M MAXI M MINI M

, MAXIMLAf DESCRIPTION PENETRATION DATE TOTAL PATHWAY PATHWAY DATE TOTAL PATHWAY l PATHWAY A MSIV l A0 203 A.2A lli-17-101 10-0 l S. o I lo o 118-17-19 l lo o l

5.o i to o l

B MSIV l A0 203-18.28 in-s z-43 l 3.y I

/.9 l

s.o li,-it-go1

3. f I

g.g l

3. f g

C MSIV

A0 203-10.2C ll-st 4' I 10-0 I

so l 10-o lis-iMo i o.O l qo I to.o l

D MSIV l A0 203-10.2D IIllz-Ya 13g l

I.i 1 5.F lti-it-1.l 3-f I

f. i 3.g l

TOTAL ll F TOTAL t3.f TOTAL CORRECTED

23.'l TOTAL C0fRECTED *

'Z 3. '[

MSL DRAIN l MD 220-1.2 lH-lM'l 73l lJ. ',, 3 13-Dill s.I 1,

l. ?

l 3-l l

PRIMARY SAMPLE I A0 220-44.46 lif-80YoI oo i c.Sj, e o 12 zi <le I

c. o I

o. o I

o.o l

A FEEDWATER I CV 220-58A.62A ll7-P '101 7 77. 0 l

.9 i

2' t li-B -4I! 7-9 l

O.4 l 7r l

8 FEEDWATER l CV 220-588.628 l#115-?e l VO l

Iz-n-1l l l-o I

a. 7 l

o, y l

A DW SPRAY l MO 1001-23A.26A l st-l't 18 I t6 0 I

(. o l l6 pi-w ;; 1 16.O l fo l 16.o l

A fDE RETURN l MO 1001-29A 118-I'l"l* l l-I l

1I

_i

!I l?-11-11 l O-5 1

o. T l

0. S l

A T0fRJS COOLING SPRAY l MO 1001-34.36.37A lit 14 'f' l 7.5 I l3 1

7 S-13-9 'If i 15.O le !3 l / S-o l

B_DW SPRAY l MD 1001-238.2tiB l a-t'-1* I l-4 1

0. 7 l

1 'i In-d-Sol l-4 i

O. 7 1 iy l

8 RHR RETipi l MO 1001-298 117-I' l o4 1

0. 'l i

o.4

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B TORUS COOLING / SPRAY l MO 1001-34.36,37B 104' 'to l

3. 'I I

l7 l

3 'l I rt F -7cl 3. 8I l

t7 1 3.9 l~

SHUTDOWN COOLING l MO 1001-47,50 In 'i-781 7.6 l

l3 1

2.6 13 -i3-4ll

1. 'l i

O. 7 l l 'i l

PAGE TOTAL l NA l l

l l NA l 58-7 l l So-S l

PPROVED VO 54-U0 393 (EXCEPT MSIVs) l l

l l

l tiPR I 2 gggl v, m,,, g, u,,,,

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REFUEL OUTAGE LOCAL QTS 100-S1 LEAK RATE TEST StaeERY Revision 8 AS FOUh0 (SCFH)

AS LEFT (SCFH)

VALVE (S)/

MINI M MAXIMUM MINI M MAXI M DESCRIPTION PENETRATION DATE TOTAL PATHWAY PATHWAY DATE TOTAL PATHWAY PATHWAY SBLC l CV 1101-15, 16 ll7-#4-wl is o l (3. o 1

9-o litw to i 15'.o l 6o l

9-o l

CLEAN UP SUCTION I 10 1201-2,5 lh-t 7 'NI 23.3 1 41.i I

83.3 l3 is i

(.o l

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RCIC STEAM SUPPLY l MO 1301-16.17 l'l-13-9 l

9. 3 i L2 1

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RCIC STEAM EXHAUST l CV 1301-41 l/8-19-9o l oo l c.o

]

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o.o l

RCIC VAC. PLAIP EX.

I CV 1301-40 l/I-/6 -7a l 3.o l 3.o l

3o lit-G 'io i 3 -o i

3.o i

3.o l

A CORE SPRAY l MO 1402-24A, 25A lis ->'i-15 l S-3 l 76 l

2. 7 "l re-9 -w I s. 3 l-2.s l

7. '?

l

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8 CORE SPRAY l MO 1402-248, 25B 182 -dz4'l 1-I I

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o

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DW/ TORUS PURGE SUPPLY l A0 1601-21,22,55.56l"-l'f 'N I

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o-o I

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DW/ TORUS PURGE EXHAUST l A0 1601-23,24,60, l

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0 i C5 l

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l l

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l 8 TORUS RB VACUlm BREAKER lA01601-208, l

l l

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l ll 23 l CV 1601-318 l

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l-1 ll HPCI STEAM SUPPLY i MO ?301-4.5 l"-'5 *# l 2. 6 l

L3 l

26 I N il l l-o l

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HPCI STEAM EXHAUST l CV 2301-45 li'-8 + 'h i O.o l

0o l

0-o 18-'V-f o l O.o I

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RBCCW SUPPLY l MO 3702 CV 3799-31l#2-rs 9o l 2 7.o l go l

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r. E l

d.o l

l RBCCW RETURN l MD 3703, 3706 l 12 +*1 3 5 5-l 16.o l

7. 5 l87 9 Wl h.s l 16 o l

17-s-l APPROVED l

l l

PAGE TOTAL l NA l

l l

l NA !

l l

l g g gg.

10/0168s '

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REFUEL OUTAGE LOCAL QTS 100-S1 LEAK RATE TEST S M ARY Revision 8 UNIT Cf E AS FOUW (SCFH)

AS LEFT (SCFH)

VALVE (S)/

MINI M MAXI M MINI M MAXI M DESCRIPTION PENETRATION DATE TOTAL PATHEAY PATHWAY DATE TOTAL PATHWAY PATHBAY CLEAN DEMIN l 4399-45. CV 4399-46in-19 Sol ~2 o !

o 5- 'l

/S 1:2-19-9a l 'Z-o I

o-s-l / - S' i

SERVICE AIR l 4699-46. CV 4699-47ll 9'fl l 4-r l

l-1 1

3-Z l 1 'l '// l 4 - /

l t-1 1

3. z l

De PNEUMATIC l A0 4720, 4721 111-J6-10 l O -9 1

0.0 1

03 ist-16 -Yo ] O.9 l o-o 107 l

De INSTRIAENT AIR I CV 4799-155. 156 ll-94l I53 l Zo i

53 18-9-91i s-3 1 2o

]

3-3 l

i TORUS INSTRAENT AIR I CV 4799-158. 159 li-'5-91 l 0-3 I O4 I

O-V ll-16 'il I o - ?

l O-4 l

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Q AN.S.LYZER l A0 8801A. 8802A lri-&'loI o 0 l

o -o l

o-o I ti-rl'tc l o-o I o.o l o.o l

2 Q ANALYZER I A0 88018. 88028 111 21-13 l o.o I

o-o l

O-o i ri -tive i o-o 'l o-o I

o, o l

2 Q ANALYZER l A0 88010. 8802C lil-THe-l C-o I

o-o l

oo l o -wf a l o-o l o.o i ce l

2 Q ANALYZER I A0 8801D. 88020 lII-7Mo i I-o l

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2 Q ANALYZER l A0 8803, 8804 lii-zi'ic l o.6 l

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2 DRYWELL PARTICULATE l

l l

l SAWLE LINES 1 LINES 88038-V-1/2"-HI '

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li-23411 o o I

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TIP BALL VALVE l 733-1 l11-81 * ] o-o Ioo l

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TIP BALL VALVE l 733-2 lit-81 'id l o o l

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TIP BALL VALVE I 733-3 lit-l't-*l oM i

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TIP BALL VALVE l 733-4 lii-sit l o-o l

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l 700-743 lo-a 'SI 7o l

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CAM i SO 2499-1A.2A l

D* I 0-0 l

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CAM l SO 2499-18.28

,ri-7 7 se l c.9 l

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CAM i SO 2499-38.48 11i-11* l o.o l o-o l

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o-o I

o-o l

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l 2 5. 3 l

l 13-7 l

l#7-/

l l iz 6 l

13 0 Go PAGE TOTAL l NA I l

l l NA l

l l

l g j ggl 10/0168s t Q.C.O.SJt,

REFUEL OUTAGE LOCAL QTS 100-S1 LEAK RATE TEST SLAAAARY Revision 8 UNIT GNE AS FOUND (SCFh)

AS LEFT.(SCFH)

VALVE (S)/

MINilAAd MAXilAAd MINilAAd MAXIIAAI DESCRIPTION PENETRATION DkTE TOTAL PATHWAY PATHWAY DATE TOTAL PATHWAY PATHWAY ACAD l A0 2599-2A.23A lil-lT40l 4 3 I O. I i

43 IlF9-481 ? ?

l o-o I Z7 l

ACAD i A0 2599-28,238 liF17-90 l f6 l

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1-C inho/fol 1.7 l

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ACAD l A0 2599-3A,24A lIl-15t l O0 i O. o I o-o ll1-W/2 l 0. 4 l oo l o-4 l

ACAD i A0 2599-38,248 lh-15-WI O o I ec l

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ACAD l A0 2599-4A,5A l ll-lC-w l l7 l

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ACAD l A0 2599-48,58 lill6 Tol I-3 l O3 l l6 lll /s w l /- ?

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EQUIPMENT HATCH l X-1 l lFit -W l 0o l

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DW ACCESS HATCH l X-4 llL2F?o l 2-z l

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CAD HATCH l X-6 ll8-87-1-l o c l

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TIP PENETRATION l X-358 lit-89 'lo l 0o l

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TIP PENETRATION l X-350 lisI'I%l oo l Oo 1 Oo Iil-19-P l o-o I oo l

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TIP PENETRATION l X-350 lll-li-Yc l o-o I

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TIP PENETRATION l X-35E lli-89 'f o I do l o.o I

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TIP PENETRATION

,I X-35F lIs -n 1c l o-o I

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co lia-81*l oo l

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TIP PENETRATION l X-35G 111-89 'ro l a o I o-o I

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10RUS HATCH l X-200A IlFIP9a l oo l oc l

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l TORUS HATCH l X-2006 Ili-8/Mo I co l

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SHEAR LUG INSP. HATCH l SL-1 lle 7 7b l o-o l

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SHEER LUG INSP HATCH l SL-2 lii-7 7 'io l G o l ao I

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l APPROVED l

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PAGE TOTAL l NA l

l l

l NA l l

l l

M 12 Fe l

10/0168s

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REFUEL OUTAGE LOCAL OTS 100-S1 LEAK RATE TEST SUWARY Revision 8 AS FOUND (SCFH)

AS LEFT (SCFH) i VALVE (S)/

MINIMUM MAXIMUM MINIMUM MAXIMUM

_ DESCRIPTION PENETRATION DATE TOTAL PATHWAY PATHWAY DATE TOTAL PtTHWAY PATHWAY SHEER LUG INSP. MATCH l SL-4 li m <rel o.o l

o.o l

o.o lis-711o l 0-0 l

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SHEAR 8.'r 8NSP. HATCH l SL-5 ln-2 7-1. l o-o l

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SHEE4 LUG INSP. HATCH l SL-6

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SHEAR LUG INSP. HATCH l SL-7 ld4 7

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SHEER LUG INSP. HATCH I SL-8 l""1' l 0o l

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l Oo I it 9* l 00 l 07-l oo l

MECH PENETRATION l X-7A ln-ivs. l 21 l

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MECH. PENETRATION l X-78 la-h + l l 'Z.

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l 'i-St 'li l 1 - 1 l

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1. z l

MECH. PENETRATION l X-7C ln-n+ l Oo l

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MECH. PENETRATION l X-70 ju-n-v l

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MECH. PENETRATION l X-8 ld 9 l O. 7 l

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MECH. PENETRATION l X-9A liHi t l0o l

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MECH. PENETRATION l X-98 l H ~ 2

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l 00 MECH. PENETRATION l X-10 lit-it'M l o-o l

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MECH. PENETRATION l X-11 lit-li 'M l o-o l oo l

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l

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MECH. PENETRATION l X-12 l9-11 'I l 40 l 'i d MECH. PENETRATION l X-13A l'N 'l+ l o9 l

na l

O. S lltl'l-y.l o.6 l o-3 l o.5 l

MECH. PENETRATION l X-138 j u-81 r l o. 3 l

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l

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MECH. PENETRATION l X-14 l st-81 + loo l

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MECH. PENETRATION l X-23 lat-31* l

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MECH. PENETRATION l X-24 l'8-811 l 0 o l

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MECH. PENETRATION l X-25 l S 4 -* I ' M l ipa l is7M l1-tY.;j l i.3 1"c.. o l

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MECH. PENETRATION l X-26 l 'M -M l 0o l

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l l

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l l

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REFUEL OUTAGE LOCAL OTS 100-S1 LEAK RATE TEST SIANARY Revision 8 AS FOUND (SCFH)

AS LEFT (SCFH)

I VALVE (S)/

MINIMUM MAXIMLM MINIRM MAXil4M DESCRIPTION PENETRATION DATE TOTAL PATHWAY PATHWAY DATE TOTAL PATHWAY PATHNAY MECH. PENETRATION l X-36 ll) P l o '1 l

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MECH. PENETRATION l X-47 l ll-r9 'fe l o o l

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MECH. PENETRATION l X-17 llt l'i 4* l 0. 't l

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MECH. PENETRATION l X-16A lI#-19-7. I c.o l

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MECH. PENETRATION l X-168 li-ter l o-o l

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ELECTRICAL PENETRATION I X-1000 lre 73 v l o 9 1

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c ELECTRICAL PENETRATION l X-100C l8173 + 1 c.o l

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l l

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ELECTRICAL PENETRATION l X-100E l fs n 'fa l o-9 l

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ELECTRICAL PENETRATION l X-101A lIll'*l G-o l

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10/0168s Q.C.O.S.R. - -

i REFUEL OUTAGE LOCAL OTS 100-S1 i

LEAK RATE TEST StANARY Revision 8 i

Lital I Cr c' AS FOUND (SCFH)

AS LEFT (SCFH) l VALVE (S)/

MINIMUM MAXIMUM MINIMUM MAX IMUil-DESCRIPTION PE5'2TRATl0N DATE TOTAL PATHWAY PATHWAY DATE TOTAL PATHWAY PATHWAY l

ELECTRICAL PENETRATION l X-1048 l11-94-l o-9 l

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ELECTRICAL PENETRADON l X-104C lit 'to'ta l c-o l ot l

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ELECTRICAL PENETRATION l X-104F llF Z'

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ELECTRICAL PENETRATION l X-105A ll'-u 9 l o.ti l o t.

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REFUEL OUTAGE LOCAL OTS 100-S1 LEAK RATE TEST SUhMARY Revision 8 AS FOUND (SCFH),,

AS LEFT (SCFH)

VALVE (S)/

MINIMUM ' W(IMUM MINIMUM MAXllEJM DESCRIPTION PENETRATION DATE TOTAL PATHWAY PATHWAY DATE TOTAL PATHWAY PATHWAY

~

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v

To determine the corrected leakage of the MSIVs (as if they had been tested at 48 PSIG), multiply by 1.73.

- When the maximum pathway leakage exceeds 0.6 La (293.75 SCFH), write an LER inunediately.

~

+The test total is the sum of all page totals in the checklist (exclude MSIVs from all test totals).

Reference:

QTS 150-8) " Determination of Total Containment Leak Rate."

APPROVED APR I 21951 (final)

Q.C.O.S.R.

10/0168s i

I 1

l APPENDIX B COMPUTATIONAL PROCEDURE l

i 0483H w

D. INPUT PROCESSING.

Calculations perfomed by the software are outlined below:

D.)

Average temperature of subvolume #1 (Tg)

. The average of all RTD temps in subvolume il N

Tj.1 I Tg,j N

j.1 where N. The number of RtDs in subvolume #1 0.2 Average dew temperature of subvolume #1 (Dj)

. The average of all dew cell dew temps in subvolume #1 1

N Og.-

I D,j t

N j.)

where N. The number of RfDs in subvolume #1 0.3 Total corrected pressure #1, (P))

C1 First correction factor for raw pressure #1, (from program initialization data met).

Mt Second correction factor for raw pressure #1, (from program initialization data set).

Pr) Raw pressure #1, from BUFFILE.

P1. C). Mi Prg/1000, for 5 digit pressure transmitters P). C1+M1 Prt /10000, for 6 digit pressure transmitters D.4 Total corrected pressure #2, (P )

2 C2 First correction factor for raw pressure #2, (from program initialization data set.

M2 Second correction facter for raw pressure s2, (from program initialization data set.

Pr2 Raw pressure #2, from SUFFILE.

P2-C2*M2 Pr2/1000, for 5 digit pressure transmitters P2.C2*H2 Pr2/10000, for 6 digit pressure transmitters l

0483H,

-- ~

~

l D.5 Whole Containment Volume Heighted Average Temperature, (T )

c Approximate N

Metnod T e.

I ft Tg 1-1 1

Tc.

Exact N

ft Method I

11 Tj f. The volume fraction of the ith subvolume where:

t N. The total # of subvolumes in containment D.6 Average Vapor Pressure of Subvolume 1 (Curve fit of ASHE steam tables.) (Pyg)

Pvt. 0.01529125 + p.0016l3476 Di

- 2.28128 X 10-9 (Dg)4 + 7.081828 X 10*7 (Og)3

- 1.44734 X 10-(0g) 3.03544 X 10-II (Dg)5 0.7 Nhole Containment Average Vapor Pressure, (Pyc)

Approutmate N

Method Pvc.

I fj Pvt 11 Exact N

'g Pvg Method Pvc. Tc I 11 Tg N. The total of subvolumes in containment f. Volume fraction of the ith subwolume t

i D.8 Whole Containment Average Dew Temperature. (Oc)

Approximate N

Method De.

I ft Og 11 Exact Methee The whole containment average vapor pressure.

(Pv ) calculated with the exact method is used to e

find De. An initial value of De is guessed and used with the equation in D.6 to calculate Pv.

e This value is then compared to the known value frem D.7.

A new value of De is guessed and the process is repeated until a vafue of De is found that results in a calculated value of Pvc that is within.0001 psia of the value from D.7.

l 0483H.

0.9 Average to'tal contat'nment pressure,(P) 2 P. ( P).P2)

Average total containment dry air pressure, (P )

d Pd.P-Pvc D.10 Total Containment dry air mass, (H)

Type 1:

M=

R Tc l

vhere: R. Perfect gas constant, Ve. Total containment free volume.

Type 2: Type 2 dry air mass accounts for changes in Reactor Vessel level.

For uncorrected dry air mass, (Type 1) the below definitions apply.

N Ve. I Vi and ft V /Ve i

11 where Vt is the user entered free volume in subvolume 1.

For corrected dry air mass, (Type 2) the same definitions for Ve and ft apply, except that one of the V s is corrected for changes i

in vessel level.

If k is the subvolume number of the corrected subvolume then:

Vg.. Vgo - a(C - b) a is the number of cubic feet of free volume per inch of vessel level.

b is the base level of the reactor vessel, in inches.

C is the actual water level in the reactor vessel, in inches.

Vgg is the volume of the subwolume k when C equals b.

The volume fractions (f ) are then calculated with the t

corrected volume, and all other calculations are subsequently performed as previously specified for Type 1 dry air mass.

f 0483H 1

D.11 Leakrate C'alculations using Kass-Plot Method:

This method assumes that the leakagt rste is constant during the testing period a plot of the measured contained dry air mass versus time would ideally yield a straight line with a negative slope.

Based on the least squares fit to the data obtained, the calcula.ed containment leakage rate is obtained from the equation:

M. At + 8 i

Where M. containment dry air mass at time t

8. calculated dry air mass at time t 0 (lbs.)

(lbs.)

A. calculated leakage rate t. time in,terval since start of test (ibs/hr)

(hours) j 8

11 (lbs) s t (hours) least squares best fitted to the leak rate data are:The value 4

NI(t )(M ) - (It ) (I M )

t I

t t

A.

NI(ti)2 - (Itt )2 1

4 1

(

l IMt Atti i

t. --

N

)

1 N

j i

0483H

~ ~

e 4

By definition, leakage out of the containment is considered positive leakage. Therefore, the statistically averaged least souares containment leakags rate in weight percent per day is given by:

L=(

'.) (2400)/8 (weight 1/ day)

In order to calculate the 951 confidence limit of the least squares averaged leak rate, the standard deviation of the least squares slope and the student's T-Distribution function are used as follows:

1 NI(Hj)2 (IMj)2 (1400) (weight ".

' *~

~

,,,(N-2 NI(tj)2 (Itg)2 B

s UCL = L, e (T) 1.6449(N-2) + 3.5283 + 0.85602/(N-2) where T.

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

Number of data sets N

test duration at the ith data set (hours) tt

=

standard deviation of least squares sicpe (weight %/ cay) e

=

T Valve of the single-sided T-Distribution function with 2 degrees of freedom calculated leat rate in weight %/ day L

=

UCL 951 upper confidence limit (1/ day) 8 calculated containeent dry air mass at time t.0 (Ibs.)

0.12 Point to Point Calculations This method calculates the rate of change with respect to time of dry air mass using the Point to Point Method.

l e

0483H -

. =..

For every* data set, the rate of changt of dry air mass between the most recent. (tt) and the previous time (tt.1) is calculated using the two point method shown below:

2400 Mt*

(1 ' H'IH *I}

I (tt ti.1)

Then the letst square fit of the point to point leakrates is calculated as described for tiry air masses in section 0.11 D.13 Total Time Calculations This method calculates the rate of change with respect to time cf ory air mass using the Total Time Nethod Initially, a referenge time (tr) is chosen. For every data set the rate of' change of Jry air mass between tr and the most recent time, tt is calculated using the two point method shown below.

2400 Ng.

(1 e N 'Mr) t Then the least squPres fit and 957, UCL of the Total Time leakrates are calculated as shown below:

I A I(tt)2. g ttIAtt t

t

~

N I (tt)2 - (I tt)2 A - I 11 IA)

( N I tt t

t A.

N I (tt)2. (I tt)2 L=

8 + At 1.6449(N 2) + 3.5283 + 0.85602/(N.2)

T.

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

Note: N is the number of data sets minus one, l

0483H 1

+- -

O 1

(to

" 'tt) / N)2 F.

N I (t,

- ( I tg )2 /N t

/

I (A )2 - B I A - A I A tt

\\/j/

\\/,/

ea t

t N

UCL = L + To Note: This equation is calculated for information only from the start of the test up to 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months , then it becomes the official leakrates for future times.

D.14 BN TOP-1 This method calculates the rate of change with respect to the time of dry air mass using the Total Time Method.

Initially, a r6ference time (tr) is chosen. For every data set the rate of change of the data item between tr and the most recent time. (t ) is calculated using the two point method shown below:

t 2400 Mj.

(1 - M /Mr) t (tt - tr)

Then the least squares fit of the Total Time leakrates and the BN-TOP-1 957. UCLs are calculated as shown below.

( I A I(tt)2 I A tt)

I tt t

t N I (tt)3 - ( I tt )3 Note: N is the number of data sets minus one.

l l

0483H..

i l

I tg I kj )

( N ! tg ${

N I (t))2 - (I tt)2 L.

B + At 2.37226 2.8225 T. 1.95996 + (N - 2)

(M - 2)2

+

(tp - I (tt) / N)2 I

F.

1 N

I (tg)2 - (I tg)2 / N

'/,.

/ y-. F

/ I (A )2. B I A - A I A tt t

t t

e./

f

\\/j N

\\/

UCL = L + To This equation is calculated for inforrstion only from the Note: start of the test up to 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months , then it becomes the offletal leaktates for future times.

D.15 Temperature stabilization checking per ANS! 56.8-1981 Mighted average containment air temperature at hour i.

Ti Rate of change of weighted average containment air temperature T,n t

over an n hour period at hour 1. using a two point backwards difference method, j

t

~

T.n.

i n

I l

0483H.

I 21 is the AN'S! 56.8-1981 Temperature stabilization criteria at hour I.

21.lTj,4 T.)

l 1 must be 1 4.

t Per ANSI 56.8-1981, Z must be less than or equal to 0.5 0F/hr NOTE: If the data sampling interval is isss than one hour, then:

Option #1 Use d.ta collected at hourly intervals Option #2 Use average of data collected in previou: hour for that hour's data.

D.16 Calculation of Instrument Selection Guide, (ISG)

ISG.14EL

/ Z (ep/p)Z

2 (e /T)3 +.l.,, (ed P)#

r

/

t

\\/ N Nr Nd p

where: t is the test time', in hours p is test pressure, psia T is the volume weighed average containment temperature, OR Nn is the number of pressure transmitters Ni is the number of RTDs Nd is the number of dew cells op is the combined pressure transaltters' error, psia er is the combined RTDs' error. OR ed is tha combined dew cells' error. OR e#.

/

\\/ (Sp)2 + (RPp + RS )2 p

where: So is the sensitivity of a pressure transe.itter RP is the repeatability of a pressure transmitter RS is the resolution of pressure transmitter er=

/

\\/ (Sr>2, (apr

RSr)2 where: Sr is the sensitivity of an RTD l

RPr is the repeatability.

an RTD R$p is the resolution of an RTD 1

0483H...

APy ed *

/

\\/ (S }2. (mpd

R$ )2 ATd Td d

d where: Sd is the sensitivity of a dew cell RP is the repeatability of a dew cell R$

is the reselution of a dew cell AP change in vapor pressure y

TT I

change in saturation temperature O

d The above ratio is from ASME steam tables and evaluated at the containment's saturation temperature at that time.

D.17 BN-TOP-1 Temperature Stabilization Criteria Calculation The rate of change of temperature is less than 1 'F/Nr averaged A.

over the last two hours.

K1.lTi - T1 11 K2 T.1 - T -21 1

i K' and K2 aust both be 'ess than 1 to meet the criteria l'sted in A.

B.

The rate of change of temperature changes less than 0.5 F/ hour / hour averaged over the last two hours.

K)

(Ti - T.1)/(tl - ti.1) 1 K

1 I

2 * (Z.1l-T -2)/(tl.1 - ti.2)l 1

(K1 - K )/(ti - ti.1) 2 2 aust be less than 0.5 to meet the criteria listen in B.

D.18 Reactor Vassel Free Volume Mass Calculation As shown in section D.10, the free volume of the Reactor vessel subvolume e is given by the below equation.

V,. V,o - a (c-b)

The dry air mass in subvolume e can then be written as:

Me.144(P-Pve)Ve/Rin Where: Me is tP-dry air mass in sabvolume e. (Ibs)

R is the gas constant of air 5istheaverage,temperatureofsubvolumee,(oR) 5e is the average vapor pressure of subvolone e, (pisa)

P is the average containment pressure, (psia) 3 V, is the free air volume in subvolume e. (ft )

0483H.-

-,. _ _ _ =,

.n.,,-.,.

l D.19 Vorus Free Volume Calculation free volume calculations of'the Torus rely L*pon narrow range Torus water level inputs.

These valtes range between plus and minus five i

inches.

It is assumed that the Torus subwolume free air volume is I

that subvolume's volume when the Torus level equals zero. The user say enter three constants to swel the variation of Torus air volume with water level.

i The equations for Torus free volume in subvolume t are given:

3 Vt

V o - (al + bL. cL ))when L10 t

t

V o + (-4L + bl2 -cL when L1 0 V

t The dry air mass in subvolume t can then be written as:

Mt

I44 (E"E ) V /RYt vt t

Where: Mt is the dry air mass in subvolume t, (Ibs)

P is the average containment pressure, (psta) 5t is the average vapor pressure of subvolume t (pisa) 3 Vt is the free volume i.. subvolume t, (f t )

R is the gas constant of air Tt is the average temperature in subvolume t (og)

L is the Torus level. (inches) a,b,e are Torus level constants Y o is the free volume in subvolume T when L equals zero, t

3 taken from standard free volume inputs. (ft )

E. OUTPUTS E.1 OUTPUT DEVICE TYPES: The below output devices shall be supported.

1 l

There are no special constraints on output device locations.

1 PRINTERS:

PRIME High Speed Line Printer OK!0ATA 2410 OK! DATA 93 LA120 PLOTTERS:

Newlet Packard 7475A 8.5" X 11" Newlet Packard 7585A 8.5" X 11" Newlet Packard 7585A 11" X 17" CRTs:

Wyse Wy75 View Point 60 Amp.es Dialogue 80 & 81 PRIME PT200 GRAPHICS TERMINALS:

Ranfech 6200 RamTech 6211 Tektronts 4107 Tektronis 4208 Tektronia 4014 l

0483H.

m.e,

,--._w-.,.r.,

..,-,,m,-,

.n~w-_av,aee-.

--,n-_----,,e-,

4

_1 ps-4 a _

s

.-+

_a.-.

-4,

.A 4

APPENDIX C INSTRUMENT ERROR ANALYSIS 1

l l

0483H

_49_

IPCLRT SAMPLE ERROR ANALYSIS FOR SHORT DURATION TEST I

A.

ACCURACY ERROR ANALYSIS Per Topical Report BN-TOP-l the measured total time leak rate (M) in weight percent per day is computed using the Absolute Method by the formula:

T P M (% / DAY) 2400

1_

1 N

(1)

H T P N l where: Pj

- total (volume weighted) containment dry air pressure (P3IA) at the start of the test; PN - total (volume weighted) containment dry air pressure (PSIA) at data point N after the start of the test; H

- test duration from the start of the test to data point N in hours; T1

- containment volume weighted temperature in *R at the start of the test; TN - containment volume weighted temperature in 'R at the

-data point N.

The following assumptions are made:

A A

Pj - PN-P where P is the average dry air pressure of the l

containment (PSIA) during the test; A

A Ti=TN-T where T is the average volume weighted primary containment air temperature (*R) during the test; P1-PN where P is the total containment atmospheric pressure (PSIA);

1 Py1 - PVN Where Py is the partial pressure of water vapor in the primary containment.

0483H l

Taking the partial derivative in terms of pressure and temperature of (1) equation and substituting in the above assumptions yields the following equation found in Section 4.5 of BN-TOP-1 Rev. 1:

~

e e

/>

eg - 1 2430

2 ( 1 ): +2( _L):

H A

A P

T where ep - the error in the total pressure measurement system, ep -

1 [(ePT)* + ('PV): ) 12;

'pT = (instrument accuracy error) / / no. of inst. In measuring total containment pressure; epy - (instrument accuracy error) / / no. of inst. in measuring vapor partial pressure; eT - (instrument accuracy error) / / no. of inst. in measuring containment temperature; eM - the error in the measured leak rate; H = duration of the test.

NOTE Subvolume #11, the free air space above the water in the reactor vessel, is treated separately from the rest of the containment volume.

The reason for the separate treatm9nt is that neither the air temperatt 4 or the partiel pressure of water vapor is measured directly.

The temperature of the air space is assumed to be the temperature of the reactor water, as measured in the shutdown cooling or clean-up demineralizer piping before the heat exchangers.

The partial pressure of water vapor is computed assuming saturation conditions at the temperature of the water.

Volume weighting the errors for the two volumes (Subvolume #11 and Subvolumes #1-10) is the method used.

0483H l c

j

. e B.

E00!PHENT SPECIFICATIONS THERMISTER FLOWMETER THERM 0 COUPLE INSTRUMENT

(*F)

PPG (PSIA)

DEWCELL (*F)

(SCFM)

('F)

Range 50-140 0.4-100 50 - 210 0.90-11.40 0 - 600 1

10 2

1 0%

1 015%

3 25 0

1 25 0

0 Accuracy Max Flow Repeat-1 02 z.10 1 01 0

0 1 001%

0 ability 1 01 0

C.

COMPUTATION OF INSTRUMENT ACCURACY UNCERTAINTY 1.

Computing " ei "

Volume Fraction for Volume #11 =.02344 Volume Fraction for Volumes #1-10

.97656 ei - 2 (0.97656

0.25 +.02344

2.0 )

/30

/1 et - t 0.0914*R 2.

Computing " epT "

ePT = 1 0.015(63.0)

/2 ePT = 1 0.00668 PSIA 3.

Computing " epy "

At a dewpoint of 65*F (assumed), an accuracy of 2 l'F corresponds to 2 011 PSIA.

For subvolume #11 at an average temperature of 140*F, an accuracy of i 2'F corresponds to 2 150 PSI.

epy = 1 (0.97656

0.011 + 0.02344

0.150 )

/10

/U epy. 3 0,0059 PSIA 4.

Computing " ep "

ep - t [ (0.00668)2 + (0.0069)2 ]I/2 ep - 1 0.0096 PSIA 0483H y >.

5.

Computing total instrument accuracy uncertainty " eH A

1 2400

2*

0.0096 2 +2*

0.0914 2 eH H

63.0 544.7 A

assuming P - 63.0 PSIA A

T - 544.7'R Therefore, for a 6 hour6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months test (H),

eg

-1 0.128 wt % / DAY D.

COMPUTATION OF INSTRUMENT REPEATABILITY UNCERTAINTY 1.

Computing " eT "

0 01 eT = 12

/30 0.0018'R eT = 1 2.

Computing epT "

ePT = 1 0.001

/2 epi = 1 7.071X10-4 PSIA 3.

Computing " epy "

epy - 2 (.97656 *.006 +.02344 *.008 )

/10

/1 epy - 1 0.0020 PSIA 4.

Computing " ep "

ep - [ (7.071X10-4)2 + (0.0020): ]1/2 ep - 1 0.00212 PSIA 0483H 4

r kf -

R 5.

Computing the total instrument repeatability uncertainty " eM" R

'/'

eH " 2400

2 0.00212 2 +2 0.0018 :

H 63.0 544.7 Therefore, for a 6 hour6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months test, R

eH = 1 0.01912 wt % / DAY E.

COMPUTING TOTAL INSTRUMENT llNCER1AINTY A

R eg - 1 2 * [ (eg)2 + (eH)2 ) 1/2

+ (0.01912)2 11/2 eM = 1 2 * [ (0.128):

eH = 1 0.292 weight % / DAY for a 6 hour6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months test.

eg - 1 0.195 weight % / DAY for a 8 hour9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months test.

eM = 1 0.156 weight % / DAY for a 10 hour1.157407e-4 days 0.00278 hours 1.653439e-5 weeks 3.805e-6 months test.

eH = 1 0.130 weight % / DAY for a 12 hour1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months test.

eg - 1 0.065 weight % / DAY for a 14 hour1.62037e-4 days 0.00389 hours 2.314815e-5 weeks 5.327e-6 months test.

4

'l I

0483H d

ML20077G794

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