ML20024B647
| ML20024B647 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  |
| Issue date: | 07/01/1983 |
| From: | Lundvall A BALTIMORE GAS & ELECTRIC CO. |
| To: | Clark R Office of Nuclear Reactor Regulation |
| References | |
| DH-185, NUDOCS 8307110129 | |
| Download: ML20024B647 (45) | |
Text
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l EXECUTIVE
SUMMARY
l A Primary Containment Integrated Leakage Rate Test (ILRT) was successfully com-pleted at the Calvert Cliffs Nuclear Power Plant, Unit 2, on December 18, 1982.
The test met the requirements set forth in 10CFR50, Appendix J.
Listed below is the summary of the test results for both the mass point and total time data analysis techniques. The actual measured leakage (Lam) and the 95 percent upper confidence limit (UCL), in units of weight percent per day, are compared to the acceptance criteria.
Mass Point Test Result Acceptance Criteria ILRT Lam 0.013 <0.150 ILRT UCL 0.023 <0.150 Verification Test Lam 0.226 0.163 < Lam <0.263 Total Time ILRT Lam 0.016 <0.150 ILRT UCL 0.071 <0.150 Verification Test Lam 0.224 0.166 < Lam <0.266 The total local leakage rate measured for the four penetrations not in the post-LOCA lineup during the ILRT was 0.0015%/ day.
The chronological summary of events, summary of plant technical data, and dis-cussion of test results are included in portions of this report.
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8307110129 830701 PDR ADOCK 05000318 P pm
CONTENTS Section Page INTRODUCTION 1 i
TEST SYNOPSIS 1 i TEST DATA
SUMMARY
2 ANALYSIS AND INTERPRETATION 7 s
REFERENG S 10 APPENDICES A. Description of Bechtel ILRT Computer Program
- B. Pressurization and Stabilization Summary Data C. ILRT Trend Report D. ILRT Summary Data, Mass Point, and Total Time E. ILRT Plots , Airmass , Temperature, Pressure, and Vapor Pressure F. Verification Flow-Summary and Data
, G.- ISG Calculations H. Local Leakage Rate Test Evaluation I. Malfunctioning Sensor Plots l
- t DH-185 i
- l. INTRODUCTION
. This report presents data, analysis, and conclusions pertaining to the Calvert Cliffs Nuclear Power Plant Unit 2 Integrated Leakage Rate Test (ILRT) performed in December 1982. The Integrated Leakage Rate Test (Type A) is performed periodically to demonstrate that the combined leak-
- age through the reactor containment and those systems penetrating the containment does not exceed the allowable leakage rate specified in the Plant Technical Specifications.
The successful periodic Type A and supplemental verification tests were performed according to the requirements of the Calvert Cliffs Nuclear Power Plant, Unit 2, Technical Specifications and 10CFR50, Appendix J.
The Calvert Cliffs Type A test method is the Absolute Method described l in ANSI N45.4-1972, " Leakage Rate Testing of Containment Structures for Nuclear Reactors" and ANSI /ANS 56.8-1981, " Containment System Leakage Testing Requirements." The leakage rate was calculated using formulas from the above ANSI Standards and BN-TOP-1, Rev 1, " Testing Criteria for Integrated Leakage Rate Testing of Primary Containment Structures for Nuclear Power Plants. Type A and verification test durations were according to the criteria of BN-TOP-1.
! A 95% upper confidence level was calculated for leakage rate data as required by Reference 6. This is to ensure a 95% probability that the calculated leakage rate value is within the acceptance limits. All cal- ,
culations were done with Bechtel's ILRT computer program described in
. Appendix A.
- The temperature and pressure history and the containment air mass varia-4 tions were plotted by the computer program and are contained in Appendix E.
. II. TEST SYNOPSIS j Valve line-ups were conducted on all systems to establish post-accident
~
conditions except for shutdown cooling and three penetrations necessary to conduct the ILRT. The inspection of the containment's accessible i
interior and exterior surfaces was conducted prior to pressurization.
i No evidence of structural deterioration was noted which would have l af fected containment integrity or leak tightness.
Containment pressurization commenced at 0:15 a.m. , December 17, 1982, and [
, test pressure was reached at 6:50 p.m. Containment fans, coolers, and
( compressors were secured at 7:05 p.m. At 9:15 p.m. the containment
, pressure had increased to 50.34 psig. Inorder to prevent the pressure i
from exceeding 50.5 psig, during the test, the pressure was bled down to
- s50.05 psig at 9
- 45 p.m. The temperature stabilization criteria was
! satisfied at 0:15 a.m. December 18 and collection of data to determine l
the integrated leakage rate commenced at-0:30 a.m. and was completed at
-8:30 a.m. The verification was initiated at 9:00 a.m. The verification flow test was completed' satisfactorily and depressurization of the con-tainment commenced at 2:15 p.m. December 18, 1982. After the containment was completely depressurized at 7:00 a.m. December 19, 1982, a containment DH-185' -l-
~
p entry was made. Determination was made that no measurable water level changes requiring corrections to the measured leakage rate had occurred during the test. Summary of test phases were as follow:
Test Phase Time Duration Date Pres surization 0:15 - 18:50 18.6 hr December 17 Stabilization 19:00 - 0:15 5.25 December 17-18 ILRT 0:30 - 8:30 8.0 December 18 Verification Stabilization 9:00 - 10:00 1.0 December 18 Verification Test 10:00 - 14:00 4.0 December 18 During the test one temperature sensor and two dewpoint sensors were malfunctioning. Temperature sensor 2 started malfunctioning at 8:00 p.m.
December 17; dewpoint sensors 3 and 4 started malfunctioning at 10:30 p.m.
December 17 and 5:00 a.m. December 18 respectively. Plots of the mal-functioning sensors are given in Appendix I, where values less than 32*F or greater than 120*F are plotted at 32*F. The plots show that temper-ture sensor 2 and dewpoint sensor 3 continued to malfunction for the remainder of the test. Dewpoint sensor 4 appeared to read correctly from 5:45 a.m. through 10:45 a.m. after which it continued to malfunction.
The volume f ractions for the three malfunctioning sensors were reassigned to sensors in the same region of the containment. The volume fraction for temperature sensor 2 and dewpoint sensor 3 were reassigned to sensors above the operating deck, i.e. , temperature sensors 1-7 and dewpoint sensors 1-2. The volume fraction for dewpoint sensor 4 was reassigned to the sensor one level up, i.e. , dewpoint sensor 5. The reassigned volume fractions were used to calculate the containment dry air mass during the entire test. Data taken before a sensor malfunction was re-processed using the reassigned volume fractions. Appendix G shows the resulting ISG calculations with the temperature sensor and two dewpoint sensors deleted.
During the test two inconsistent data points were taken at 1:00 a.m and 10:15 p.m. December 18. The two data points appear as obvious outliers on the air mass plot in Appendix E, and therefore were not used in the leakage rate calculations.
The outliers at 1:00 a.m. and 10:15 p.m. were caused by incorrect read-
-ings on dewpoint sensors 6 and 1 respectively. Plots of dewpoint sensors 6 and 1 are given in Appendix I. The plots show that the sensor malfunc-tions were singular events and therefore these two' data sets and corres-
. ponding calculated air masses were eliminated from the test data analysis.
DH-185 III. TEST DATA
SUMMARY
A. Plant Information Owner: Baltimore Gas and Electric Company Plant: Calvert Cliffs Nuclear Power Plant Unit 2 Location: Lusby, Maryland Containment Type: Post-tensioned concrete Data Test Completed: December 18, 1982 B. Technical Data
- 1. Containment Net Free Air Volume 2,000,000 cu ft
- 2. Design Pressure 50 psig
- 3. Design Temperature 276*F
- 4. Calculated Peak Accident 50 psig Pressure, Pa
- 5. Containment ILRT Average 60-120*F Temperature Limits C. Type A Test Criteria
- 1. Test Method Absolute
- 2. Leakage Rate Data Analysis Total Time per BN-TOP-1 and Techniques Mass Point per ANSI /ANS 56.8-1981
- 3. Test Pressure 50.0 psig + 0.50
- 0.00
- 4. Maximum Allowable Leakage Rate, 0.2%/ day La per Technical Specification
- 5. 75% of La 0.15%/ day D. Type A Test Result Integrated Leakage Rate From Regression At Upper 95%
%/ day Line (Lam) Confidence Limit
- a. Mass Point Analysis 0.013 0.023
- b. Total Time Analysis 0.016 0.071
-DH-185 ___ .
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E. Verification Test
- 1. Imposed flow rate (Li) 12.13 scfm/0.200%/ day
- 2. Verification Test Results Leakage Rate,%/ day
- a. Mass Point Analysis 0.226
- b. Total Time Analysis 0.224
- 3. Verification Test Limits Test Limit,%/ day
- a. Mass Point Analysis (1) Upper Limit 0.263 (Li + Lam + 0.25 La)
(2) Lower Limit 0.163 (Li + Lam - 0.25 La)
- b. Total Time Analysis (1) Upper Limit 0.266 (2) Lower Limit 0.166 F. Report Printouts The Report Printouts of the Type A and verification test calculations are provided for the Mass Point and Total Time Analysis (Appendixes B through F). Stabilization data is also provided (Appendix B).
G. Local Leakage Rate Test Results - Type B and C Tests
- 1. LLRT Results - The Type B and C leakage tests were conducted prior to the Type A test. The total as left LLRT measurement for Unit 2 was 31,308.87 scem. This value converts to 0.018%/ day which is less than the technical specification limit of 0.12%/ day.
An evaluation of as lef t compared to as found data is contained in Appendix H.
- 2. During the ILRT the following penetrations were not in the post accident position. The following is the local leak rate measure-ment for these penetration.
Penetration System As Left 7A ILRT Instrumentation 5.
7B ILRT Instrumentation 10.3 41 Shutdown Cooling Return- 2384.
50 ILRT Pressurization 350.
Total: 2649.3 seem
%/ day: .0015 DH-185 le
- 3. Periodic Type B and Type C Test Results Since Last ILRT Outage Date LLRT Acepetance Criteria 3/5/81 140,399.33 secm .6 La = 207,600 scem
- 4. 10CFR50, Appendix J, paragraph V.B.3 requires that leakage test results from Type A, B, and C tests that failed to meet the acceptance criteria of III. A.5(b), III. B.3, and III. C.3, respectively, shall be reported in a separate accompanying summary report that includes an analysis and interpretation of the test data, the least-squares fit analysis of the test data, the instrumentation error analysis, and the structural condition r f the containment or components, if any, which contributed to the failure in meeting the acceptance criteria. Since the tests meet the acceptance criteria no further analysis is submitted. Instruments used during local leakage rate testing are calibrated as follows: + 1% full scale for flowmeters, and
+ 0.1% full scale for for temperature and pressure gauge.
Field checks of flowmeters are performed prior to each test to check calibration.
H. Integrated Leakage Rate Measurement System The following instrument system was used:
Description Data
- 1. Absolute Pressure 2 Precision Pressure Gages Range: 0-100 psia Mensor Model 10100-001 Accuracy: + 0.02% F.S.
Sensitivity: .001 psia Note: Only pressure gage 2 Repeatability: .0005% F.S.
was used to calculate Calibration Data: 12/9/82 leakage rates
- 2. Drybulb Temperature 18 Temperature Sensors Range: 0-150*F Rosemont 100 ohm Accuracy: + 0.10*F Platinum Model 78-65-17 Sensitivity: .0l*F Repeatability: 0.003*F Calibration Data: 11/30/82
- 3. Dewpoint Temperature 6 Dewpoint Detectors Range: 40-100*F EG6G Model 660-52 Accuracy: + .54*F Sensitivity: 0.10*F Repeatability: 0.05'F Calibration Data: 11/24/82 Dil-185 I
Description Data l
- 4. Flow Meters 1
2 Mass Flowmeters Range: 0-10 scfm
^
(1) TSI Model 2013 2-20 scfm (2) TSI Model 2014 Accuracy: + 1% F.S Sensitivity: + 1% F.S.
Repeatability: .25% F.S.
- Calibration Data
- 11/30/82
- 5. Overall Instrumentation Selection i' Guide (ISG) Value (from ANSI /ANS 56.8-1981, Appendix C) based on
- ILRT instrumentation and an eight hour minimum test duration =
0.00795%/ day. (Calculations Appendix G).
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- 6. Drybulb and Dewpoint Temperature Sensor Volume Fractions - Table 1 i:
i 7. RTD junction box locations -
Table 2.
I. Information Retained at Plant The following information is available for review at the Facility:
j 1. Listing of all containment penetrations, including the total number of like penetrations, penetration size and function.
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- 2. Systems lineup (at time of test).
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- 3. A continuous, sequential log of events during the test.
j 4. Documentation of instrumentation calibration and standards.
- 5. The working copy of test procedure that would include signature sign-off of procedural steps.
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- 6. The procedure and all data from local leakage rate testing of l penetrations and valves.
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[ 7. The Quality Assurance audit plan that was used to monitor ILRT.
- 8. A listing of all test exceptions including changes in containment system boundaries instituted by licensee to conclude successful l
testing.
- 9. Description of method of leak rate verification of instrument measuring system (super imposed leakage), with calibration infor-mation on flowmeters along with calculations that were' used to measure the verification leakage rate.
DH-185 -
s IV. ANALYSIS AND INTEPRETATION 4,
The Integrated Leakage Rate Test results at the upper 95% confidence level, are Lam = 0.023%/ day (Mass Point analysis) and 0.071%/ day (Total Time analysis). The Local Leakage Rate for penetrations not in post-LOCA lineup is 0.0015%/ day. The sum of the ILRT upper 95% confidence level and LLRT leakage rates, Lam = 0.025%/ day (Mass Point analysis) and 0.073%/ day (Total Time analysis) satisfy the acceptance criteria.
The acceptance criterion is Lam < 0.75 La = 0.150%/ day, at Pa = 50 psig
(-0 psi, 0.5 psi).
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DH-185 , _- , _ _ . _. . - . ._. . - - _ . . _ .
TABLE 1 DRYBULB AND DEWPOINT TEMPERATURE SENSOR LOCATIONS Volume Volume TE Elevation Azimuths Distance Fractions Fractions Reference No. Tag No. (ft) (degrees) From Center Original Reassigned Drawing 1 0-TE-5500 165 0 0 .081 .090 E-381 2* 0-TE-5501 147 90 33 .081 .000 E-381
. 3 0-TE-5502 149 270 33 .081 .089 E-381 4 0-TE-5505 120 0 45 .071 .089 E-381 5 0-TE-5503 115 0 0 .075 .089 E-381 6 0-TE-5508 125 90 40 .075 .089 E-381 7 0-TE-5504 104 180 30 .071 .089 E-381 8 0-TE-5506 75 210 40 .047 .047 E-381 9 0-TE-5510 50 270 45 .021 .021 E-381 10 0-TE-5507 65 0 0 .042 .042 E-381 11 0-TE-5509 75 150 45 .047 .047 E-381 12 0-TE-5513 50 90 40 .021 .021 E-384 13 0-TE-5511 50 210 50 .041 .041 E-381 14 0-TE-5512 50 110 45 .041 .041 E-384 15 0-TE-5515 20 210 45 .045 .045 E-379 16 0-TE-5516 20 90 30 .042 .042 E-378 17 0-TE-5514~ 16 340 30 .059 .059 E-379 18 0-TE-5517 16 160 45 .059 .059 E-378 DEWCELLS AE No.
1 0-AE-5518 119 60 55 .224 .336 E-381 2 0-AE-5519 119 170 55 .224 .336 E-381 3* 0-AE-5520 140 270 35 .224 .000 E-381 4* 0-AE-5521 69 180 40 .102 .000 E-381 5 0-AE-5522 47 180 30 .102 .204 E-384 6 0-AE-5523 16 160 45 .124 .124 E-378 4
- Malfunctioning sensors - not used for leakage rate calculations.
5 DH-185 _
2 TABLE 2 RTD JUNCTION BOX LOCATIONS Azimuth Elevation Cable Number RTD No. (degrees) (ft) 0-TE-5500 1 260 119 0-TE-5501 2 100 119 0-TE-5502 3 260 119 0-TE-5505 4 100 119 0-TE-5503 5 0 119 0-TE-5508 6 260 119 0-TE-5504 7 60 119 0-TE-5506 8 200 119 0-TE-5510 9 170 69 0-TE-5507 10 200 119 0-TE-5509 11 320 69 0-TE-5513 12 130 47 0-TE-5511 13 190 69 0-TE-5512 14 220 47 0-TE-5515 15 120 27 0-TE-5516 16 330 16 0-TE-5514 17 240 27 0-TE-5517 18 160 16 1
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DH-185- ,
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V. REFERENCES
- 1. Calvert Cliffs, Unit 2, Plant Technical Specifications.
- 2. Calvert Cliffs Procedure STP M-662-2, Integrated Leakage Rate Test, Unit 2 Containment.
- 3. 10CFR50, Appendix J, Reactor Containment Leakage Testing for Water Cooled Power Reactors.
- 4. U.S. Nuclear Regulatory Commission Regulatory Guide 1.68, Preopera-tional and Initial Startup Test Program for Water Cooled Power Reactors.
- 5. ANSI N45.4-1972, Leakage Rate Testing of Containment Structures for Nuclear Reactors.
- 6. ANSI /ANS 56.8-1981, Containment System Leakage Testing Requirements.
- 7. Bechtel Topical Report BN-TOP-1, Testing Criteria for Integrated Leakage Rate Testing of Primary Containment Strictures for Nuclear Power Plants.
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I DH-185 l
r=
APPENDIX A DESCRIPTION OF BECHTEL ILRT COMPUTER PROGRAM A. Program and Report Description
- 1. The Bechtel'ILRT computer ' program is used to determine the inte-grated leakage rate of a nuclear primary containment structure.
l The program is used to compute leakage rate based on input values of time, free air volume, containment atmosphere total pressure, drybulb temperature, and dewpoint temperature (water vapor pressure).
}
Leakage rate is computed using the Absolute Method as defined in
' ANSI /ANS 56.8-1981, " Containment System Leakage Testing Requirements" and BN-TOP-1, Rev 1, " Testing Criteria for Integrated Leakage Rate Testing of Primary Containment Structures for Nuclear Power Plants".
The program is designed to allow the user to evaluate containment
- leakage rate test results at the jobsite during containment leakage i testing. Current leakage rate values may be obtained at any time during the testing period using one of two computational methods, yielding three different report printouts.
- 2. In the first printout, the Total Time Report, leakage rate is com-puted from initial values of free air volume, containment atmosphere drybulb temperature and partial pressure of dry air, the latest
- values of the same parameters, and elapsed time. These individually
- computed leakage rates are statistically averaged using linear re-gression by the method of least squares. .The Total Time Method is the computational technique upon which the short duration test
, criteria of BN-TOP-1, Rev 1, " Testing Criteria for Integrated i Leakage Rate Testing of Primary Containment Structures for Nuclear Power Plant," are based.
- 3. The second printout is the Mass Point Report and is based on the
, Mass Point Analysis Technique described in ANSI /ANS 56.8-1981,
! " Containment System Leakage Testing Requirements." The mass of dry 1 air in the containment is computed at each data point (time) using the Equation of State, from current values of containment atmosphere
- drybulb temperature and partial pressure of dry air. Contained mass is " plotted" versus time and a regression line is fit to the data using the method of least squares. Leakage rate is determined from
, the statistically derived slope and intercept of the regression line.
4
- 4. The third printout, the Trend Report, is~a summary of leakage rate values based on Total time and Mass Point computations presented as a function of number of data points and elapsed time (test dura-t ion) . The Trend Report provides all leakage rate' values required for comparision to the acceptance criteria of BN-TOP-1 for conduct of a short duration test.
- 5. The program is wcitten in a high level language and is designed for use on a micro-computer with direct data input from the data acquisition system. Brief descriptions of program use, formulae
-DH-185 A-1
used for leakage rate computations, and program logic are provided in the following paragraphs.
B. Explanation of Program
- 1. The Bechtel ILRT computer program is vritten, for use by experi-enced ILRT personnel, to determine containment integrated leakage rates based on the Absolute Method described in ANSI /ANS 56.8-1981 and BN-TOP-1.
- 2. Information loaded into the program prior to or at the start of the test:
- a. Number of containment atmosphere drybulb temperature sensors, dewpoint temperature (water vapor pressure) sensors and pressure gages to be used in leakage rate computations for the specific test
- b. Volume fractions assigned to each of the above sensors
- c. Calibration data for above sensors
- d. Test title
- e. Test pressure
- g. Maximum allowable leakage rate at test pressure
- 3. Data received from the data acquistion system during the test, and used to compute leakage rates:
- a. Time and date
- b. Containment atmosphere drybulb temperatures
- c. Containment atmosphere pressure (s)
- d. Containment atmosphere dewpoint temperatures
- e. Containment free air volume.
- 4. Af ter all data at a given time are received , a Swamary of Measured Data report (refer to " Program Logic," Paragraph D, " Data" option command) is printed.
- 5. If drybulb and dewpoint temperature sensors should fail during the test, the data from the sensor (s) are not used. The volume-frac-tions for the remaining sensors are recomputed and reloaded into l the program for use in ensuing leakage rate computations.
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DH-185 A-2 L __
C. Leakage Rate Formulae
- 1. Computation using the Total Time Method:
- a. Measured leakage rate, from data:
PV1 i = W 1RT1 (1)
PVi i = WiRTi (2) 2400 (W1-W) i Li = (3)
Ati W1 Solving for W1 and Wi and substituting equations (1) and (2) into (3) yields:
2400 TPV1ii)
Li = [1 - i (4)
Ati i TPV11ij where, W,Wi 1 = Weight of contained mass of dry air at times ti and ti respectively, Ibm.
T,Ti 1 = Containment atmosphere drybulb temperature at times ti and ti respectively, *R.
P,Pi 1 = Partial pressure of the dry air component of the con-tainment atmosphere at times ti and ti respectively, psia.
V,V i = Containment free air volume at times ti and ti res I
tively,(constantorvariableduringthetest),ftgec- .
ti, ti = Time at 1st and i th data points respectively, hours.
Ati = Elapsed time from ti to ti, hours.
R = Specific gas constant for air = 53.35 f t.lbf/lbm. *R.
Li = Measured leakage rate computed during time interval ti to ti, wt.%/ day.
In order to reduce truncation _ error, the computer program uses the following equivalent formulation:
-2400 AWi-Li=
Ati W1 DH-185 A-3 ,
a
where, !
AWi Wi-W1
___=
W1 W1 api AVt APaVi i ATi
+ + -
P1 V1 PV1i T1 g , AT i Ti api =Pi-Pi AVi=Vi-VI ATi=Ti-T1
- b. Calculated leakage rate from regression analysis, 5=a+ bat N (5) vhere:
E = Calculated leakage rate, wt.%/ day, as determined from the regression line.
a = (E Li - bTA ti )/N (6)
N(ELi a ti) - (ELi)(TA ti ) .
2 N(Ea ti ) - (Eati)2 N = Number of data points N
E=E i=1
- c. Calculated leakage rate at the 95% confidence level.
L95 = a + b AtN + S_ (8)
'L where:
L95 = Calculated leakage rate at the 95% confidence level, wt.%/ day, at elapsed time A tN' DH-185 A-4
For a tN < 24
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S_ =t 0 025;N-2 [(ELg 2 - aII,1 - BELi at g )/(N-2)]1/2 x [1 + 1 + (a tN-AT) / (9a)
L N (Ea1t 2 - (Iati)2j3)j1/2 where, t0 025;N-2 = 1.95996 + 2.37226 + 2.82250 ;
N-2 (N-2)4 For a tN 1 24 S_ = t0 025;N-2 [(ILg 2 - aEI,g - BEL g a tg)/(N-2)]N x [l +(AtN- )/ (9b)
L N (Ia t1 2 _ (g c1 )2f3)jl/2 1.6449(N-2)2 + 3.5283(N-2) + 0.85602 where, t0 025;N-2 =
(N-2)2 + 1.2209(N-2) - 1.5162 Li = Calculated leakage rate computed using equation (5) at total elapsed time att, %/ day.
__ I6 ti at=
N
- 2. Computation using the Mass Point Method
- a. Contained mass of dry air from data:
Wt = 144 P,V i RTi (10) where:
All symbols as previously defined, i b. Calculated leakage rate from regression analysis, W = a + b a t b
_L = -2400 - (11) a where:
L = Calculated leakage rate, wt.%/ day, as determined from the regression line.
1 l
DH-185 A-5
a = (IWi -bEa ti )/N (12)
N(EW i iat ) - (IWi)(Eatg) 2 N(Ea tg ) - (m tt)2 atg = Total elapsed time at time of i th data point, hours N = Number of data points Wg = Contained mass of dry air at i th data point, Ibm, as computed from equation (10).
N E=E i=1 Inorder to reduce truncation error, the computer program uses the following equivalent formulation:
AWi b a= Wy 1 + (E E Att )/N W1 W1 AWi AWi N (E At)-E g eat t Wi Wi b= W M(EA 2tg ) _ (ggi)2 AWi where, is as previously defined.
W1 i
- c. Calculated leakage rate at the 95% confidence level.
-2400 L95 = (b - Sb) (14) a where:
L95 = Calculated leakage rate at the 95% confidence level, wt.%/ day.
I l DH-185 A-6
1/2 SN Sb=to.025;N-2 [NIAtg 2 - (Iat f)2jl/2 (15) where, t0 025;N-2 . 1.6449(N-2)2 + 3.5283 (N-2)2 + 0.85602 (N-2)2 + 1.2209 (N-2) - 1.5162 S-)iIlW - (a + b a t1)]2 1/2 1
N-2 r, -
=W y E6W1/W 1 )2 - [E(AW1 /W 1 )]2/N -
1, -,
1/2
[E(AW i /W 1 ) Ai t - EOWi/W 1 )(Ea tf)/N]2 z
E(A tf ) - (I Ati)2/N ,j Dil-185 A-7
D. Program Logic
- 1. The Bechtel ILRT computer program logic flow is controlled by a set of user options. The user options and a brief description of their associated function are presented below.
OPTION COMMAND FUNCTION After starting the program execution, the user either enters the name of the file containing previously entered data or initializes a new data file.
DATA Enables user to enter raw data. When the system requests values of time, volume, temperature, pressure and vapor pressure, the user enters the appropriate data. After completing the data entry, a summary is printed out. The user then verifies that the data were entered correctly. If errors are detected, the user will then be given the opportunity to correct the erro rs. After the user verifies that the data were entered correctly, a Corrected Data Summary Report of time, data, average temperature, partial pressure of dry air, and water vapor pressure is printed.
TREND A Trend Report is printed.
TOTAL A Total Time Report is printed.
MASS A Mass Point Report is printed.
TERM Enables user to sign-off temporarily or permanently.
All data is saved on a file for restarting.
CORR Enables user to correct previously entered data.
LIST A Summary Data Report is printed.
READ Enable the computer to receive the next set of data from the data acquisition system directly.
PLOT Enables user to plot summary data, individual sensor data or air mass versus time.
DELETE Enables user .o delete a data point.
INSERT Enables user to reinstate a previously deleted data point.
VOL FRA Enable user to change volume fractions.
Dil-185 A-8 e
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OPTION COMMAND FUNCTION TIME Enable the user to specify the time interval for a report or plot.
VERF Enable the user to input imposed leakage rate and calcaluted ILRT leakage rates at start of verification test.
E. COMPUTER REPORT AND DATA PRINTOUT MASS POINT REPORT The Mass Point Report presents leakage rate data (wt%/ day) as deter-mined by the Mass Point Method. The " Calculated Leakage Rate" is the value determined from the regression analysis. The " Containment Air Mass" values are the masses of dry air in the containment (1bm).
These air masses, determined from the Equation of State, are used in the regression analysis.
TOTAL TIME REPORT The Total Time Report presents data leakage rate (wt%/ day) as deter-mined by the Total Time Method. The " Calculated Leakage Rate" is the value determined from the regression analysis. The " Measured Leakage Rates" are the leakage rate values determined using Total Time calcu-lat ions. These values of leakage rate are used in the regression analysis.
TREND REPORT The Trend Report presents leakage rates as determined by the Mass Point and Total Time methods in percent of the initial contained mass of dry air per day (wt%/ day), versus elapsed time (hours) and number of data points.
SUMMARY
DATA REPORT The Summary Data report presents the actual data used to calculate leakage rates by the various methods described in the " Computer Program" section of this report. The six column headings are TIME, DATE, TEMP, PRESSURE, VPRS, and VOLUME and contain data defined as follows:
- 1. TIME: Time in 24-hour notations (hours and minutes).
- 2. DATE: Calendar date (month and day).
- 3. TEMP: Containment weighted-average drybulb temperature in absolute units, degrees Rankine (*R).
DH-185 A-9
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l l
- 4. PRESSURE: Partial pressure of the dry air component of the con-tainment atmosphere in absolute units (psia).
- 5. VPRS: Partial pressure of water vapor of the containment I atmosphere in absolute units (psia).
- 6. VOLUME: Containment free air volume (cu. f t.).
F.
SUMMARY
OF MEASURED DATA AND
SUMMARY
OF CORRECTED DATA The Summary of Measured Data presents the individual containment atmosphere drybulb temperatures, dewpoint temperatures, absolute total pressure and free air volume measured at the time and date.
- 1. TEMP 1 through TEMP N are the drybulb temperatures, where N = No. cf RTD's. The values in the right-hand column are temperatures (*F), multiplied by 100, as read from the data acquisition system (DAS). The values in the left-hand column are the corrected temperatures expressed in absolute units
(*R).
- 2. PRES 1 through PRES N are the total pressures, absolute, were N = No.
of pressure sensors. The right-hand value, in parentheses, is a number in counts as read from the DAS. This count value is converted to a value in psia by the computer via the instrument's calibration table, counts versus psia. The left-hand column is the absolute total pressure, psia.
- 3. VPRS 1 through VPRS N are the dewpoint temperatures (water vapor pressures), where N = No. of dewpoint sensors. The values in the right-hand column are temperatures (*F), multi-plied by 100 as read from the DAS. The values in the left-hand column are the water vapor pressures (psia) from the-steam tables for saturated steam corresponding to the dewpoint (saturation) temperatures in the center column.
The Summary of Corrected Data presents corrected temperature and pressure values and calculated air mass determined as follows:
- 1. TEMPERATURE (*R) is the volume weighted average containment atmosphere drybulb temperature derived from TEMP 1 through TEMP N.
- 2. CORRECTED PRESSURE (psia) is the partial pressure of the dry air component of the containment atmosphere, absolute. The volume weighted average containment atmosphere water vapor pressure is subtracted from the volume weighted average total pressure, yielding the partial. pressure of the dry air.
- 3. VAPOR PRESSURE (psia) is the volume weighted average contain-ment atmosphere water vapor pressure, absolute derived from VPRS 1 through VPRS N.
DH-185 A-10
- 4. VOLUME (cu. ft.) is the containment free air volume.
- 5. CONTAINMENT AIR MASS (1ba) is the calculated mass of dry air in the containment. The mass of dry air is calculated using the containment free air volume and the above TEMPERATURE and CORRRECTED PRESSURE of the dry air.
I DH-185 A-ll i.= . . . - . . . . . . : .
i
PRESSURIZATION AND STABILIZATION DATA TIME DATE TEMP PRESSURE VPRS VOLUME 1915 1217 525.105 64.8486 .1959 2000000.
.1930 1217 525.864 64.7800 .1985 2000000.
1945 1217 526.444 64.8243 .1986 2000000.
2000 1217 526.851 64.8546 .19913 2000000.
2015 1217 527.162 64.8767 .2024. 2000000.
2030 1217 527.432' 64.8930 .2048 2000000.
2045 1217 527.604 64.9070 .2056 2000000. '
2100 1217 527.397 64.9234 .2031 2000000.
2115 1217 527.903 64.9389 .2004 2000000.
2130 1217 528.006 64.9269 .1985 2000000.
2145 1217 527.727 64.6510 .1959 2000000.
2200 1217 527.981 64.6816 .1941 2000000.
2215 1217 528.187 64.7003 .1922 2000000.
2230 1217 528.285 64.7136 .1908 2000000.
2245 1217 528.410 64.7251 .1892 2000000.
2300 1217 528.487 64.7367 .1884 2000000.
2315 1217 528.555 64.7485 .1865 2000000.
2330 1217 528.658 64.7581 .1858 2000000.
2345 1217 528.737 64.7677 .1852 2000000.
O 1218- 528.801 64.7755 .1842 2000000.
15 1218 528.847 64.7834' .1832 2000000.
B-2
r 1
APPENDIX B PRESSURIZATION AND STABILIZATION DATA 1
CALVERT CLIFFS UNIT 2 ILRT
SUMMARY
DATA ALMAX = . 200 VOLUME = 2000000.
TIME DATE TEMP PRESSURE VPRS VOLUME 10 1217 527.236 14.5809 .1413 2000000.
40 1217 529.969 14.5720 .1464 2000000.
110 1217 530.300 17.4685 .1530 2000000.
130 1217 530.290 18.4176 .1567 2000000.
135 1217 530.279 18.6614 .1584 2000000.
142 1217 530.231 19.0236 1611 2OOOOGO.
200 1217 530.036 19.8726 .1654 2000000.
230 1217 529.974 21.3302 .1715 2000000.
300 1217 529.717 22.7865 .1780 2000000.
330 1217 529.550 24.2388 .1845 2000000.
400 1217 529.290 25.6920 .1900 2000000.
430 1217 529.070 27.1336 .1950 2000000.
500 1217 528.764 28.5765 .1986 2000000.
530 1217 5?8.505 30.0195 .1987 2000000.
600 1217 528.222 31.4617 .1999 2000000.
630 1217 527.986 32.9027 .1984 2000000.
700 1217 527.658 34.3370 .1967 2000000.
730 1217- 527.347 35.7687 .1965 2000000.
800 1217 527.060 37.1328 .1945 2000000.
830 1217 526.782 38.4818 .1938 2000000.
900 1217 526.546 39.8822 .1937 2000000.
930 1217 526.264 41.2914 .1921 2000000.
1000 1217 526.179 42.6386 .1927 2000000..
1030 1217 526.058 43.9848 .1942 2000000.
1100 1217 525.967 45.3404 .1959 2000000.
1130 1217 525.695 46.4905 .1953 2000000.
1200 1217 525.614 47.8283 .1956 2000000.
1230 1217 525.381 49.1564 .1965 2000000.
! 1300 1217 525.304 50.4837 .1954 2000000.
1330 121' 525.124 51.7406 .1969 2000000.
1400 1217- 524.813 52.8715 .1963 2000000.
1430 1217- 524.755 54.0876 .1959 2000000.
1500 1217 524.619 55.4176 .1968 2000000.
1530 1217 524.508 56.7085 .1972 2000000.
1600 1217 524.435 58.0275 .1981 2000000.
1630 1217 524.267 59.3383 .1984 2000000.
1700 1217 524.139 60.5557 .1981 2000000.
1730 1217 523.919 61.6908 .2706 2000000.
1800 1217 523.697 62.7986 .1952 2000000.
1830 1217 523.522~ 63.9576 .1945 2000000.
1900.1217 522.848 64.5548 .1912 2000000.
B-1
_ - - 3 m - -
I APPENDIX C
/ ILRT TREND REPORT i
CALVERT CLIFFS UNIT 2 ILRT TREND REPORT TIME AND DATE AT START OF TEST: 30 1218 1982 NO. END TOTAL TIME ANALYSIS MASS POINT ANALYSIS PTS TIME MEAS. CALCULATED UCL CALCULATED UCL 4 130 .061 .023 .693 .034 .170 5 145 .027 .012 .249 .008 .088 6 200 .012 .008 .170 .000 .062 7 215 .001 .011 .126 .002 .041 8 230 .049 .009 .143 .023 .068 9 245 .050 .022 .145 .038 .077 10 300 .002 .014 .124 .024 .059 11 315 .062 .029 .135 .042 .077 12 330 .029 .029 .127 .039 .068 13 345 .042 .033 .124 .043 .068 14 400 .053 .039 .125 .049 .071 15 415 .040 .040 .121 .048 .068 16 430 .070 .049 .127 .058 .077 17 445 .042 .049 .123 .056 .073 18 500 .016 .043 .117 .047 .065 19 515 .015 .039 .111 .039 .057 20 530 .001 .032 .104 .029 .048 21 545 .026 .031 .101 .028 .045 22 600 .005 .025 .094 .019 .037 23 615 .024 .024 .092 .020 .036 24 630 .027 .025 .090 .021 .036 25 645 .020 .024 .087 .020 .034 26 700 .018 .022 .085 .019 .032 27 715 .009 .020 .081 .016 .028 28 730 .004 .017 .077 .013 .024 29 745 .013 .016 .075 .012 .023 30 800 .006 .014 .071 .010 .020 31 815 .016 .014 .070 .010 .026 32 830 .035 .016 .071 .013 .023 C-1 A 4 .
APPENDIX D
?
SUMMARY
DATA CALVERT CLIFFS UNIT 2 ILRT
SUMMARY
DATA ALMAX = .200 VOLUME = 2000000.
TIME DATE TEMP PRESSURE VPRS VOLUME 30 1218 528.917 64.7890 .1825 2000000.
45 1218 528.973 64.7954 .1821 2000000.
115 1218 529.041 64.8048 .1806 2000000.
130 1218 529.088 64.8083 .1800 2000000.
145 1218 529.102 64.8127 .1796 2000000.
200 1218 529.141 64.8160 .1792 2000000.
215 1218 529.160 64.8188 .1784 2000000.
230 1218 529.201 64.8212 .1780 2000000.
245 1218 529.226 64.8238 .1773 2000000.
300 1218 529.227 64.8270 .1762 2000000.
315 1218 529.268 64.8275 .1766 2000000, 330 1218 529.276 64.8307 .1754 2000000.
345 1218 529.293 64.8314 .1756 2000000.
400 1218 529.329 64.8345 .1746 2000000.
415 1218 529.339 64.8367 .1743 2000000.
430 1218 529.385 64.8389 .1741 2000000.
445 1218 529.400 64.8434 .1725 2000000.
500 1218 529.390 64.8451 .1729 2000000.
515 1218 529.415 64.8483 .1726 2000000.
530 1218 529.411 64.8497 .1722 2000000.
545 1218 529.452 64.8509 .1720 2000000.
600 1218 529.434 64.8531 .1708 2000000.
%15 1218 529.469 64.8529 .1710 2000000.
'630 1218 529.483 64.8539 .1710 2000000.
645 1218 529.479 64.8546 .1703 2000000.
700 1218 529.489 64.8561 .1698 2000000.
715 1218 529.475 64.8558 .1700 2000000.
730 1218 529.475 64.8567 .1691 2000000.
745 1218 529.471 64.8543 .1686 2000000.
800 1218 529.418 64.8492 .1688 2000000.
815 1218 529.398 64.8447 .1673 2000000.
830 1218 529.393 64.8397 .1664 2000000.
D-1
APPENDIX B PRESSURIZATION AND STABILIZATION DATA CALVERT CLIFFS UNIT 2 ILRT
SUMMARY
DATA ALMAX = .200 VOLUME = 2000000.
TIME DATE TEMP PRESSURE VPRS VOLUME 10 1217 527.236 14.5809 .1413 2000000.
40 1217 529.969 14.5720 .1464 2000000.
110 1217 530.300 17.4685 .1530 2000000.
130 1217 530.290 18.4176 .1567 2000000.
135 1217 530.279 18.6614 .1584 2000000.
142 1217 530.231 19.0236 .1611 2000000.
200 1217 530.036 19.8726 .1654 2000000.
230 1217 529.974 21.3302 .1715 2000000.
300 1217 529.717 22.7865 .1780 2000000.
330 1217 529.550 24.2388 .1845 2000000.
400 1217 529.290 25.6920 .1900 2000000.
430 1217 529.070 27.1336 .1950 2000000.
500 1217 528.764 28.5765 .1986 2000000.
530 1217 528.505 .0195 .1987 2000000.
600 1217 528.222 31.4617 .1999 2000000.
630 1217 527.986 32.9027 .1984 2000000.
700 1217 527.658 34.3370 .1967 2000000.
730 1217 527.347 35.7687 .1965 2000000.
800 1217 527.060 37.1328 .1945 2000000.
830 1217 526.782 38.4818 .1938 2000000.
900 1217 526.546 39.8822 .1937 2000000. '
930 1217 526.264 41.2914 .1921 2000000.
1000 1217 526.179 42.6386^ .1927 2000000.
1030 1217 526.058 43.9848 .1942 2000000.
1100 1217 525.967 45.3404 .1959 2000000.
1130 1217 525.695 46.4905 .1953 2000000.
1200 1217 525.614 47.8203 .1956 2000000.
1230 1217 525.381 49.1564 .1965 2000000.
1300 1217 525.304 50.4837 .1954 2000000.
1330~1217 525.124 51.7406 .1969 2000000.
1400 1217 524.813 52.8715 .1963- 2000000.
1430 1217 524.755 54.0876 .1959 2000000.
1500 1217 524.619 55.4176 .1968 2000000.
1530 1217 524.508 56.7085 .1972 2000000.
1600 1217 524.435 -58.0275 .1981 2000000.
1630 1217 524.267 59.3383 .1984 2000000.
1700 1217 524.139 60.5557 .1981 2000000.
1730 1217 523.919 61.6908 .2706 2000000.
1800 1217 523.697 62.7986 .1952' 2000000.
1830 1217 523.522 63.9576 .1945 2000000.
1900 1217 522.848 64.5548 .1912 2000000.
B-1 .
PRESSURIZATION AND STABILIZATION DATA TIME DATE TEMP' PRESSURE VPRS VOLUME 1915 1217 525.105' 64.8486- .1959 2000000.
. 193011217 525.864 64.7800 .1985 2000000.
1945 1217 526.444 64.8243 .1986 2000000.
2000 1217 526.851 64.8546 .1998 2000000.
2015 1217 627.162 64.8767 .2024 2000000.
2030 1217 527.432 64.8930 .2048 2000000. ;
2045 1217 527.604 64.9070 .2056 2000000. '
2100 1217 527.397 64.9234 .2031 2000000.
2115 1217 527.903 64.938? .2004 2000000.
2130 1217 528.006 64.9269 .1985 2000000.
2145 1217 527.727 64.6510 .1959 2000000.
2200 1217 527.981 64.6816 .1941 2000000.
2 2215 1217 528.187 64.7003 .1922 2000000.
I 2230 1217 528.285 64.7136 .1908 2000000.
2245 1217 528.410 64.7251 .1892 2000000.
2300 1217 528.487 64.7367 .1884 2000000.
2315 1217 528.555 64.7485 .1865 2000000.
2330 1217 528.653 64.7581 .1858 2000000.
2345 1217 528.737 64.7677 .1852 2000000.
O 1218 528.801 64.7755 .1842 2000000.
15 1218 528.847 64.7834 .1832 2000000.
1 1
4 e
t T
I B-2
~
I APPENDIX C i ILRT TREND REPORT CALVERT CLIFFS UNIT 2 ILRT TREND REPORT TIME AND DATE AT START OF TEST: 30 1218 1982 NO. END TOTAL TIME ANALYSIS MASS POINT ANALYSIS PTS TIME MEAS. CALCULATED UCL CALCULATED UCL 4 130 .061 .023 .693 .034 .170 5 145 .027 .012 .249 .008 .088 6 200 .012 .008 .170 .000 .062 7 215 .001 .011 .126 .002 .041 8 230 .049 .009 .143 .023 .068 9 245 .050 .022 .145 .038 .077 10 300 .002 .014 .124 .024 .059 11 315 .062 .029 .135 .042 .077 12 330 .029 .029 .127 .039 .068 13 345 .042 .033 .124 .043 .068 14 400 .053 .039 .125 .049 .071 15 415 .040 .040 .121 .048 .068 16 430 .070 .049 .127 .058 .077 17 445 .042 .049 .123 .056 .073 18 500 .016 .043 .117 .047 .065 19 515 .015 .039 .111 .039 .057 20 530 .001 .032 .104 .029 .048 21 545 .026 .031 .101 .028 .045 22 600 .005 .025 .094 .019 .037 23 615 .024 .024 .092 .020 .036 24 630 .027 .025 .090 .021 .036 25 645 .020 .024 .087 .020 .034 26 700 .018 .022 .085 .019 .032 27 715 .009 .020 .081 .016 .028 28 730 .004 .017 .077 .013 .024 29 745 .013 .016 .075 .012 .023 30 800 .006 .014 .071 .010 .020 31 815 .016 .014 .070 .010 .026 32 830 .035 .016 .071 .013 .023 C-1
, a .
' ~
APPENDIX D ILRT
SUMMARY
DATA CALVERT CLIFFS UNIT 2 ILRT
SUMMARY
DATA ALMAX = .200 VOLUME = 2000000.
TIME DATE TEMP PRESSURE VPRS VOLUME 30 1218 528.917 64.7890 .1825 2000000.
45 1218 528.973 64.7954 .1821 2000000.
115 1218 529.041 64.8048 .1806 2000000.
130 1218 529.088 64.8083 .1800 2000000.
145 1218 529.102 64.8127 .1796 2000000.
200 1218 529.141 64.8160 .1792 2000000.
215 1218 529.160 64.8188 .1784 2000000.
230 1218 529.201 64.8212 .1780 2000000.
245 1218 529.226 64.8238 .1773 2000000.
300 1218 529.227 64.8270 .1762 2000000.
315 1218 529.268 64.8275 .1766 2000000.
330 1218 529.276 64.8307 .1754 2000000.
345 1218 529.293 64.8314 .1756 2000000.
400 1213 529.329 64.8345 .1746 2000000.
415 1218 529.339 64.8367 .1743 2000000.
430 1218 529.385 64.8389 .1741 2000000.
445 1218 529.400 64.8434 .1725 2000000.
500 1218 529.390 64.8451 .1729 2000000.
515 1218 529.415 64.8483 .1726 2000000.
530 1218 529.411 64.8497 .1722 2000000.
545 1218 529.452 64.8509 .1720 2000000.
600 1218 529.434 64.8531 .1708 2000000.
615 1218 529.469 64.8529 .1710 2000000.
630 1218 529.483 64.8539 .1710 2000000.
645 1218 529.479 64.8546 .1703 2000000.
700 1218 529.489 64.8561 .1698 2000000.
715 1218 529.475 64.8558 .1700 2000000.
730 1218 529.475 64.8567 .1691 2000000.
< 745 1218 529.471 64.8543 .1686 2000000.
800 1218 529.418 64.8492 .1688 2000000.
815 1218 529.398 64.8447 .1673 2000000.
830 1218 529.393 64.8397 .1664 2000000.
I D-1 L
CALVERT CLIFFS UNIT 2 ILRT LEAKAGE RATE (WEIGHT PERCENT / DAY)
MASS POINT ANALYSIS TIME AND DATE AT START OF TEST: 30 1218 1982 TEST DURATION: 8.00 HOURS TIME TEMP PRESSURE CTMT. AIR MASS LOSS AVERAGE MASS (R) (PSIA) MASS (LBM) (LBM) LOSS (LBM/HR) 30 528.917 64.7890 661261.
45 528.973 64.7954 661255. 5.3 21.3 115 529.041 64.8048 661265. -10.0 -6.2 130 529.088 64.8083 661244. 21.5 16.9 145 529.102 64.8127 661270. -26.2 -7.5 200 529.141 64.8160 661256. 14.5 3.4 215 529.160 64.8188 661260. -4.8 .2 230 529.201 64.8212 661234. 26.9 13.6 245 529.226 64.8238 661230. 3.5 13.6 300 529.227 64.8270 661260. -29.5 .5 315 529.268 64.8275 661213. 46.1 17.2 330 529.276 64.8307 661237. -23.4 8.0 345 529.293 64.8314 661223. 13.7 11.6 400 529.329 64.8345 661210. 13.5 14.6 415 529.339 64.8367 661220. -10.2 10.9 430 529.385 64.8389 661184. 36.1 19.3 445 529.400 64.8434 661212. -28.1 11.5 500 529.390 64.8451 661241. -28.6 4.5 515 529.415 64.8483 661242. -1.2 4.0 530 529.411 64.8497 661262. -19.9 .2 545 529.452 64.8509 661223. 38.6 7.2 600 529.434 64.8531 661268. -45.1 -1.3 615 529.469 64.8529 661222. 45.9 6.7 630 529.483 64.8539 661215. 6.7 7.6 645 529.479 64.8546 661226. -10.5 5.6 700 529.489 64.8561 661229. -3.4 4.8 715 529.475 64.8558 661244. -14.7 2.5 730 529.475 64.8567 661254. -9.6 1.0 745 529.471 64.8543 661234. 19.4 3.7 800 529.418 64.8492 661248. -13.6 1.7 815 529.398 64.8447 661227. 21.2 4.4 830 529.393 64.8397 661183. 43.8 9.7 l FREE AIR VOLUME USED (CU. FT.) =2000000.
l- REGRESSION LINE l INTERCEPT (LBM) = 661251.
l SLOPE (LBM/HR) = -3.7 l MAXIMUM ALLOWABLE LEAKAGE RATE = .200 75% OF MAXIMUM ALLOWABLE LEAKAGE RATE = .150 l THE UPPER 95% CONFIDENCE LIMIT = .023 THE CALCULATED LEAKAGE RATE
= .013 D-2
i 1
CALVERT CLIFFS UNIT 2 ILRT LEAKAGE RATE (WEIGHT PERCENT / DAY)
J TOTAL TIME ANALYSIS 4
. TIME AND DATE AT START OF TEST: 30 1218 1982 TEST DURATION: 8.00 HOURS TIME TEMP PRESSURE MEASURED (R) (PSIA) LEAKAGE RATE
- ____ _ - - = --- _
, 30 528.917 64.7890
- 45 528.973 64.7954 .077 115 529.041 64.8048 .023
] 130 529.088 64.8083 .061
! 145 529.102 64.8127 .027 200 529.141 64.8160 .012 215 529.160 64.8188 .001 230 529.201 64.8212 .049 245 529.226 64.8238 .050 300 529.227 64.8270 .002 l 315 529.268- 64.8275 .062 330 529.276 64.8307 .029 345 529.293 '64.8314 .042 400 529.329 64.8345 .053
. 415 529.339 64.8367 .040 l 430 529.385 64.8389 .070 445 529 . 400 64.8434 .042 500 529.390 64.8451 .016 515 529.415 64.8483 .015 530 529.411 64.8497 .001 545 529.452 64.8509 .026 600 529.434 64.8531 .005 615 529.469 64.8529 .024 '
630 529.483 64.8539 .027 645 529.479 64.8546 .020 700 529.~489 64.8561 .018 715 529.475 64.8558 .009 730 529.475 64.8567 .004 745 529.471 64.8543 .013 800 529.418 64.8492 .006 815 529.398 64.8447 .016
. 830 529.393 64.8397 .035 1
MEAN OF THE MEASURED-LEAKAGE RATES =- .025 MAXIMUM ALLOWABLE LEAKAGE RATE = .200 75% OF MAXIMUM ALLOWABLE LEAKAGE RATE = .150
-THE UPPER 95% CONFIDENCE LIMIT = .071 THE CALCULATED LEAKAGE RATE = .016 D-3 '
- - , , . , - , ~ - ,- - , ~ - , - . . , . , . - - ~ -*
l APPENDIX E' i
. ILRT PLOTS CALVERT CLIFFS UNIT 2 ILRT l
AIRMASS LBM X 1000 660.800 660.900 661.000 661.100 661.200 661.300 661.400 661.500
+_________+_________+_________+_______-_+_________+_________+-________+
30 1 +
45 1 +
- 100 1 +
l 115 1 +
l 130 1 +
l 145.! +
200 1 +
l +
215 I 230 ! +
- l 245 1 +
I 300 1 +
315 l +
330 i +
1 345 1 +
! 400 I +
415 1 +
430 I . +
445 1 +
500 1 +
515 1 +
530 i +
545 1 +
'600 1 +
615 ! +
630 ! +
645 1 +
700 1 +
715 1 +
730 ! +
745 1 +
800 I +
815 +
830 ! +
845 l 900 1 +
915 1 +
930 1 +
945 1 +
1000 1 +
1015 1 +
i 1030 1 +
1045 1 +
1100 ! +
1115 i +
1130 t +
i 1145 i +
1200 1 +
1215 : ,
+
1230 1 +
1245 : +
j 1300 i +
r 1315 1 +
1330 1 +
1345 1 +
1400 1 +
E-1 2
i CALVERT CLIFFS UNIT 2 ILRT l TEMPERATURE DEGREES F l 68.600 68.800 69.000 69.200 69.400 69.600 69.800 70.000 l
+---------+---------+ - -----+---------+---------+---------+---------+
30 1 +
45 1 +
100 1 + -
115 i +
130 1 +
145 1 + !
+ '
200 1
, 215 I +
, 230 1 +
i 245 1 +
300 1 +
315 1 +
330 1 +
345 I +
400 1 +
i 415 : + 1 430 l + [
445 + !
500 1 + '
515 : +
530 1 +
545 i +
600 1 + ,
615 : +
- 630 ! +
645 1 +
700 1 +
715 1 +
730 1 +
745 i +
800 1 +
815 ! +
l 830 i +
845 i 900 : +
915 l +
930 ! +
945 1 +
1000 1 +
1015 1 + .
1030 1 + l 1045 1 +
1100 1 +
1115 I +
1130 1 +
1145 I +
1200 1 +
1215 1 +
1230 1 +
1245 1 +
1300 1 +
1315 1 +
1330 : +
1345 ! +
1400 1. E-2 +
. . - . ._ - . . - - .. . _. .- . - . = - - - . . _ . . . . -
CALVERT CLIFFS UNIT 2 ILRT t
^
PRESSURE PSIA 64.725 64.750 64.775 64.800 64.825 64.850 64.875 64.900
+---------+--..------+---------+---------+---------+---------+---------+
30 1 +
45 1 +
100 1 +
. 115 1 +
130 1 +
145 1 +
200 1 +
215 i +
230 l +
245 I +
300 1 +
315 1 +
330 I + i 345 1 + I 400 1 +
415 I +
430 1 +
445 I +
l 500 1 +
l 515 I +
530 1 +
545 1 +
600 1 + -
615 ! +
630 ! +
645 1 +
700 1 +
715 1 +
730 l +
745 I +
800 1 +
815 i +
830 l +
845 I 900 1 +
915 I +
930 l +
945 1 +
1000 1 +
1015 1 +
1030 1 +
1045 1 +
1100 1 +
1115 I -
+
1130 1 +
1145'I +
1200 1 +
1215 1 +
1230 ! +
1245 !. +
r 1300 1 +
4 1315 1 +
-1330 1 +
1345 1 +
1400 1 +
s E-3
i l
CALVERT CLIFFS UNIT 2 ILRT VAPOR PRESSURE PSIA
.140 .150 .160 .170 .180 .190 .200 .210
+---------+---------+---------+---------+---------+---------+---------+
30 1 +
45 l +
, 100 l + l 115 i +
! 130 1 +
i 145 1 +
i 200 1 +
- 215 1 +
l 230 1 +
245 1
+ ,
300 1 +
315 1 +
330 1 +
- 1 345 1 +
l 400 1 +
! 415 i +
- 430 1 +
445 1 +
500 1 +
515 I +
530 1 +
, 545 I + ,
600 1 + ,
615 1 +
630 l +
. 645 1 +
700 1 +
715 1 +
i 730 1 +
- 745 1 +
000 1 +
t 815 1 +
830 l +
845 I 900 1 +
915 I +
1 930 1 +
l 945 i +
l +
1000 1 1015 1 +
1030 1 +
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E-4
APPENDIX F VERIFICATION
SUMMARY
DATA CALVERT CLIFFS UNIT 2 ILRT
SUMMARY
DATA ALMAX = .200 VOLUME = 2000000.
4 TIME DATE TEMP PRESSURE VPRS VOLUME 900 1218 529.312 64.8311 .1651 2000000.
915 1218 529.289 64.8274 .1649 2000000.
930 1218 529.265 64.8241 .1632 2000000.
945 1218 529.254 64.8196 .1628 2000000.
1000 1218 529.236 64.8170 .1614 2000000.
! 1015 1218 529.207 64.8264 .1481 2000000.
1030 1218 529.222 64.8125 .1600 2000000.
1045 1218 529.234 64.8127 .1598 2000000.
1100 1218 529.244 64.8138 .1587 2000000.
1115 1218 529.237 64.8139 .1586 2000000.
[ 1130 1218 529.256 64.8131 .1585 2000000.
1145 1218 529.274 64.8123 .1583 2000000.
1200 1218 529.293 64.8117 .1579 2000000.
1215 1218 529.286 64.8111 .1575 2000000.
1230~1218 529.279 64.8091 .1575 2000000.
1245 1218 529.319 64.8118 .1548 2000000.
1300 1218 529.330- 64.8099 .1577 2000000.
1315 1218 529.355 64.8115 .1572 2000000.
1330 1218 529.370 64.8127 .1569 2000000.
1345 1218 529.397 64.8155 .1571 2000000.
1400 1218 529.411 64.8163 .1572 2000000.
i l
l F-1
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VERIFICATION I CALVERT CLIFFS UNIT 2 ILRT LEAKAGE RATE (WEIGHT PERCENT / DAY)
- MASS POINT ANALYSIS i
I TIME AND DATE AT START OF TEST: 1000 1218 1982 TEST DURATION: 4.00 HOURS TIME . TEMP PRESSURE CTMT. AIR MASS LOSS AVERAGE MASS i j (R) -(PSIA) MASS (LBM) (LBM) LOSS (LBM/HR)
- - - - - - - - - - _ - = - =_--------------------___ ---------
1000 S29.236 64.8170 661148.
1030 529 222 64.8125 661119. 28.8 57.7 '!
i 1045 529.234 64.8127. 661106. 13.0 55.8 j 1100 529.244 64.8138 661105. .9 42.8 1115 529.237 64.8139 661115. -9.5 26.6 1130 529.256 64.8131 661082. 32.5 43.9 l 1145 529.274 64.8123 661052. 30.5 55.0 l 1200 529.293 64.8117 661021, 30.2 63.3 i 1215 529.286 64.8111 661024. -2.5 55.1 i
1230 529.279 64.8091 661013. 10.8 53.9 1245 529.319 64.8118 660991. 22.2 57.1
. 1300 529.330 64.8099 660958. 32.4 63.2 1315 529.355 64.8115 660942. 16.5 63.4 1330 529.370 64.8127 660935. 6.5 60.7 1345 529.397 64.8155 660931. 4.7 57.9 1400 529.411 64.8163 660921. 9.7 56.7 FREE AIR VOLUME USED (CU. FT.) =2000000.
? REGRESSION LINE INTERCEPT (LBM) = 661161.
SLOPE (LBM/HR) *
= -62.4 VERIFICATION TEST LEAKAGE RATE UPPER LIMIT = .263
- VERIFICATION TEST LEAKAGE RATE LOWER LIMIT = .163 j THE CALCULATED LEAKAGE RATE = .226 i
r 4
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.-a _ . . . _. _ - , . . _ _ _ _ _ . . . . _ _ _ .,_---__.u.- _
VERIFICATION CALVERT CLIFFS UNIT 2 ILRT LEAKAGE RATE (WEIGHT PERCENT / DAY)
TOTAL TIME ANALYSIS TIME AND DATE AT START OF TEST: 1000 1218 1982 TEST DURATION: 4.00 HOURS TIME TEMP PRESSURE MEASURED (R) (PSIA) LEAKAGE RATE 1000 529.236 64.8170 1030 529.222 64.8125 .209 1045 529.234 64.8127 .202 1100 529.244 64.8138 .155 1115 529.237 64.8139 .097 1130 529.256 64.8131 .259 1145 529.274 64.8123 .200 1200 -529.293 64.8117 .230 1215 529.286 64.8111 .200 1230 529.279 64.8091 .196 1245 529.319 64.8118 .207 1300 529.330 64.8099 .229 1315 529.355 64.8115 .230 1330 529.370 64.8127 .220 1345 529.397 64.8155 .210 1400 529.411 64.8163 .206 MEAN OF THE MEASURED LEAKAGE RATES = .197 VERIFICATION TEST LEAKAGE RATE UPPER LIMIT = .266 VERIFICATION TEST LEAKAGE RATE LOWER LIMIT = .166 THE CALCULATED LEAXAGE RATE = .224 i
e f
l F-3 l
APPENDIX G ISG CALCULATIONS A. Test Parameters La = .2%/ day leakage rate P = 65.0 psia containment pressure T = 529 *R weighted average absolute temperature T 50*F dewpoint t dp == 8 hr. test duration B. Instrument Parameters
- 1. Total Absolute Pressure No. of sensors: 1 Range: 0-100 psia Sensitivity error (EP): .001 Repeatability error ( p): 0.0005 e = j; (EP)2 + ( P)2 .000001 + .00000025
- = 0.001118 psia No. of Sensors 1
- 2. Water Vapor Pressure No. of sensors: 4 Sensitivity error (E): .10*F Repeatability error ( ): .05*F Dewpoint tempe ra ture: 50.*F Vapor pressure change: .006625 psia /*F E py = j; (.10) (.006625) = 6.6250 x 10-4 py = j; (.05) (.006625) = 3.3125 x 10-4 e py = j; (Epy)2 + ( p )2 ,
No. of sensors j; (6.6250 x 10-4)2 + (3.3125 x 10-4)2 = .00037034 4
- 3. Temperature No. of sensors: 17 Sensitivity error (E): .01*F Repeatability error ( ): .003*F i
DH-185 G-1
eT = (ET ) + ( T) .0001 + .000009
= .0025321 No. of sensors 17 ISG = + 2400 2 eP 2+2 epv 2+2 et 2.
8 P P T
+ 2400 2 1.118 x 10-3 2+2 3.7034 x 10-4 2+2 2.5321 x 10-3 2
8 65.0 65.0 529
= + 0.00795%/ day The ISG catisfies the requirement of being less than .05%/ day (25% La).
Reference:
ANSI /ANS-56.8-1981, Appendix G l
Dil-185 G-2
F APPENDIX H LOCAL LEAKAGE RATE TESTING EVALUATION During refueling outages, local leakage rate testing (LLRT) is commenced at the beginning of the outage and completed in approximately six to eight weeks. The ILRT, if scheduled for that outage, is conducted af ter the completion of the LLRT.
During the LLRT, repairs and adjustments are made to some system which may change that penetrations leak rate. The term "As Found" indicates the leak rate before repairs and adjustment and the term "As Lef t" is the leak rate af ter repairs and adjustments. An evaluation of difference between "As Found" and "As Left" can give only some indication of what the ILRT results would be if conducted prior to repairs and adjustments.
Table 1 is a comparision of the "as found" and "as lef t" data for those penetra-tions which had repairs and adjustments performed during the LLRT. Units of measured leak rate are standard cubic centimeters per minute (secm). In the "Dif ference" column "+" indicates add to ILRT results since leak rate decreased af ter repairs and adjustments, with a " " indicating the opposite.
1 1
DH-185 H-1
- m. i TABLE 1 Penetration "As Found" "As Left" Difference 18 7,040. 921. + 6,119.
14 887. 4,126. - 3,239.
2A 107.9 38.2 + 69.7
.42 2.6 135. -
132.4 2B 2,305.5 91.4 + 2,214.1 8 123. 143. -
20.
lA 11.2 63.6 -
52.4 47A 5.6 8.1 -
2.5 47C -
- 26. 2.5 + 23.5 47D 20.6 0.5 + 20.1 48B 3,930.0 333. + 3,597.
Equip. Hatch 4.0 4.1 -
0.1
- 44 87.8 1.92 + 85.88 49A 7.5 6.0 + 1.5 49B 4.8 2.1 + 2.7 7A 1.6 5. -
3.4 7B 6.8 6.8 0.0 50 '44.3 250. -
205.7 Elect. Pen. ZWB8 11,798.75 1.3 +11,797.45 ZWC3 17,698.13 2.45 +17,695.68 ZWE6 0 104. -
104.
ZEC2 19.05 1.45 + 17.6 ZEC7 30,676.75 1.55 +30,675.2 ZED 2 0 3.95 -
3.95 ZED 6 0 6.7 -
6.7 ZED 7 0 3.4 -
3.4 ZWD6 0 1.95 -
1.95 ZWE5 0 1.75 -
1.75 TOTAL: +68,542.16 Because the flanges on the inside of containment were removed on penetration 7A, 7B, and 50 prior to local leak rate testing on these penetrations, no "as found" leak rate data was determined. Since these flanges are only removed during a refueling outage the "as found" data used to determine the "RA" value was the "as left" data determine during local leak rate testing during the Unit 2 1981 refueling outage.
The flanges on penetrations 7A and 7B are only renoved when an ILRT is to be performed. Local leak rate test result on February 6,1981 for 7A and 7B measured 1.6 seem and 6.8 seem respectively. "As left" leak rate data was 5 seem and 6.8 seem respectively.
The flange on penetration 50 would have been removed during the 1981 rdfueling outage to supply compressed air to detension and tension the reactor vessel head studs during refueling of the core. Refueling was completed February 7, 1981. The local leak rate test was conducted February 25, 1981 and measured 44.3 scem. The "as left" leak rate data was 250 secm. 1 The total difference between as found and as left data was 68542.16 scem,' which converts to .040 wt%/ day. Adding this amount to the upper 95%' confidence limit for both the total time and Mass Point results, the total is .063 wt%/ day and
.111 wt%/ day respectively. Therefore, Unit 2 containment leak rate did not exceed the technical specification limit of 0.2 wt%/ day at the ,end of the last fuel cycle.
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r-BALTIM ORE GAS AND ELECTRIC CHARLES CENTER P. O. BOX 1475. BALTIMORE, MARYLAND 21203 ARTHun E. LUNDVALL. JR.
Vice PRES 60ENT Suppty July 1,1983 Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington, DC 20535 ATTENTION: Mr. Robert A. Clark, Chief Operating Reactors Branch #3 Division of Licensing
SUBJECT:
Calvert Cliffs Nuclear Power Plant Unit No. 2, Docket No. 50-318 Reactor Containment Building Integrated Leakage Rate Test Report Gentlemen:
A successful periodic reactor containment building integrated leak rate test, in accordance with Reference (1), was performed on December 22, 1982, on Unit No. 2.
Twelve copies of this report are herewith forwarded for your review, as required by Section V of 10 CFR 50, Appendix J.
Very truly y rs, l
v/'
- l ,
f^ < & ~=tA C.-
Vice President - Supply AEL/JWD/gla Enclosure lOIY f
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