ML20107A973
| ML20107A973 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 12/31/1984 |
| From: | TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| To: | |
| Shared Package | |
| ML20107A972 | List: |
| References | |
| NUDOCS 8502200181 | |
| Download: ML20107A973 (19) | |
Text
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.A
' COMANCHE PEAK STEAM ELECTRIC STATION 1
REACTOR CONTAINMENT BUILDING UNIT ONE PREOPERATIONAL TYPE B & C LOCAL LEAK RATE TEST 1984 DOCKET NUMBER 50-445 TEXAS UTILITIES GENERATING COMPANY 8502200181 850212 PDR A ADOCK 05000445 PDR .
L:
, LLRT TEST
SUMMARY
?
1.0 Introduction 1.1 General Data:
The Comanche Peak Steam Electric Station (CPSES) Unit One (1)
Preoperational Containment Type B & Type C Local Leak Rate Test (lCP-PT-75-01) commenced October 02, 1982 and concluded with the approval of the test data package on November 16, 1984. All Type B and C pressure containing or leakage limiting boundaries of the containment building as defined by 10CFR50 Appendix J and summarized in FSAR Table 6.2.4-2 were tested to determine the magnitude of leakage.
1.2 Technical Data:
The containment building at CPSES is a reinforced concrete structure with a carbon steel liner. The containment design pressure is 50 psig, and the calculated peak accident pressure in containment is 48.1 psig (Pa). The Technical Specification Limit for all penetrations and valves subject to Type B and C testing is less than .60La (319 SCFH) when pressurized to Pa. Two penetrations are water tested.
2.0 Test Summarv The CPSES Unit 1 Preoperational Containment Type B and C Local Leak Rate Test satisfactorily determined the magnitude of leakage at a 48.1 to 50 psig test pressure for all Type B and Type C pressure containing or leakage limiting boundaries. The Upper Confidence Limit (UCL) of this leakage was determined to be 53.81 SCFH. Two penetrations that were-water tested had a total measured leakage of .00154 gpm (5.833 al/ min). All Local Leak Rate Test results are provided in Attachment One.
During the preoperational test program, several rework items, inspections, and/or FSAR amendments required changes in, or the repeating of portions of the Local Leak Rate Test program. A number of containment isolation valves were eliminated from the Type C leak rate test program by FSAR Amendments 42, 46, and 51. The isolation valves involved and the associated justifications are noted in Table 6.2.4-2 in the FSAR. All test results obtained prior to elimination of their Type C testing requirements have been retained in the pre-operational test for information purposes. Several containment isolation valves that are required to be Type C tested were Y
disassembled for inspection (i.e. Borg-Warner check valve inspection) and satisfactorily retested after reassembly. Other rework and repairs performed to containment isolation valves / penetrations were generally minor in nature and consisted of: packing adjustment /
replacement, torque switch adjustment, lapping, cleaning and flushing, and alignment adjustments. Specific repair documents can be obtained from station records and are referenced in the preoperational test chronological log. At the completion of preoperational testing, L
'.7 .
penstratien MIII-19 wra in tha procscs of baing rsworksd. The leaktgs of penetration MIII-19, prior to being reworked, is included in Attachment I. When the work on penetration MIII-19 is complete, the penetration will be leakage tested in accordance with station procedure EGT-716A. Test results of ECT-716A for MIII-19 as well as for all Type B and C tests will be included in a separate report to be issued prior to fuel load.
Penertations MIII-14 and MIII-15 were initially tested with gas using the flow rate test method. FSAR amendments approved during testing permitted water testing accordance with Section III.C of Appendix J to 10PR50.
Af ter incorporation of FSAR changes to the test procedure, penetrations MIII-14 and MIII-15 were water tested at the pressure of 48.1 to 50 psig which is less than the required pressure of 53 to 54 psig (1.1Pa). Station procedure ECT-716A will be used to test penetra-tion MIII-14 and MIII-15 using the required pressure range. These test results will also be included in a separate report to be issued prior to fuel load.
It is anticipated that the slight increase in pressure will not significantly alter test results for penetrations MIII-14 and MIII-15.
Several special Type B test results were also included to measure leakage rates after rework on the following penetrations:
MIV-7(b), MIV-8(b), MIV-9(b), MIV-10(b), MIV-5(a), MIV-6(a), MIV-7(n),
MII-9, MIV-3(c), E-1, E-53, and E-54. These leak rate tests were performed on a one time basis to measure the leakage accross reworked boundaries not normally included in Type B or Type C testing. The total measured local leakage of these penetrations was found to be 24 SCCM or 0.051 SCFH. This value is negligible when compared with the 319 SCFH acceptance criteria and demonstrates that these rework items had no impact on the total LLRT test results.
3.0 Test Method & Instrumentation With exception of penetrations MIII-14 and MIII-15, each isolation valve / barriers of penetrations listed in attachment I were local leak rate tested using the flow rate test method. This method requires pressurization of the test volume from 48.1 psig to 50.0 psig with air or nitrogen. Penetrations that are water filled are drained on the upstream and downstream side of the containment isolation valves prior to pressurization using typical test arrangements as shown in Attachment II. After a stabilization period, the flow rate of test gas added to maintain a constant test volume pressure, is measured.
The majority of all leakage data flow measurenents were obtained using mass flow type leakage monitors. Each monitor has a tl% full scale accuracy over each of the following flow ranges.
2 SCCM to 20 SCCM 20 SCCM te 200 SCCM 200 SCCM to 2000 SCCM 2000 SCCM to 20,000 SCCM A small percentage of penetrations tested used either a 20 CCM to 200 CCM or a 200 CCM to 2000 CCM rotameter type flow device with a !3%
full scale accuracy.
L
Pcn:tre,ti:na MIII-14 cnd MIII-15 isolation valvsa ware wztsr tested u' sing a water collection (addition) method. For these penetrations, the test volume was pressurized from 48.1 to 50 psig. using a hydrau-lic assist device. Af ter a stabilization period, the amount of water that was added from the hydraulic device suction reservoir to maintain the test volume pressure constant over a period of time is measured to determine the leak rate.
4.0 Calculation of Leak Rate Attachment II shows typical test schematics for penetrations as noted in Attachment I. Based on the test configuration of Attachment II, each penetration's leak rate was determined based on the following evaluation valves:
criteria of each of the penetration's isolation barriers /
Barriers tested simultaneously (pressurizing between barriers) the leakage rate recorded is the total leakage rate measured.
Barriers in series but tested individually; the penetration a
leakage rate is the measured leakage rate of the isolation barrier with the highest leakage.
Parallel barriers tested together; the barrier leak rate is the measured leakage. Parallel barriers tested individually; the barrier leakage is the sum of the individual measured leak rates.
After determination of each Type B and C leak rate, all va.4ues are summed to determine the overall leakage ratsF. The standard deviation on the sum of the Type B and Type C leakages is determined by comput-ing the root sus square of all the errors (instrument inaccuracies).
The Upper Confidence Limit (UCL) is computed by adding the standard deviation to the sum of the Type B and Type C leakages as shown below:
L1= Type C leakage total = .870498 SCFM L2= Type B leakage total = .0160627 SCFM L3 =Lg+L2 = .8865607 SCFM
-= standard deviation = .0,102646 SCFM UCL = 60(L3+ g)
= 60(.8865607 +.0102646) = 53.809518 SCFH
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ATTACHMENT I Page 1 of 5 The following is a summary of leak rate test results for penetrations /
valves required to be leak rate tested.
Penetration Typical Test Type Valve Penetration Date Isolation Schematic of Leak Rate Leak Rate of System Valve Table 6.2.4-1 Test (SCCM) (SCFM) Test Comments
'MII-1 Chem & Vol 1-8152 #37 C 140 4.944E-03 06/23/83 Control 1-8160 80 10/16/82 HII-9 IPN-02 #31 B 9.25 3.27E-04 01/31/84 Maint Penet IPN-03 IPN .
'HIII-1 1-8046 #4 C 16 5.65E-04 11/16/82
. Reac' >r 1-8047 2.0 05/12/84 Coolant-MIII-6 1-8105 #25 C 7.5 4.591E-03 11/22/82 Chem & Vol 1-8381 130 11/01/82 Control MIII-7 1-8368A #15 C 114.9 4.058E-3 12/09/83 Chem & Vol 1-8351A 2.0 01/26/84 Control MIII-8 1-8368B #15 C 27.6 9.747E-04 12/12/83 Chem & Vol 1-8351B 20 02/21/83 Control
.MIII-9 1-8368C #15 C 2.0 1.236E-04 12/09/83 Chem & Vol 1-8351C 3.5 01/18/84 control MIII-10 1-8368D #15 C 188 6.64E-03 01/26/84 Chem & Vol 1-8351D 6.7 01/26/84 Control MIII-11 1-8100 #24 C 20 1.7375E-01 11/11/83 Chem & Vel 1-8112 4920 11/11/83 Control ICS-8180 MIII-12 1-7136 #27 C 20 1.413E-03 11/30/82 Waste Process 1-1003 20 11/30/82 Liquid: 1-7135 20 L.
ATTACHMENT I
( .
Page 2 of 5 Penetration Typical Test Type Valve Penetration Date Isolation Schematic of Leak Rate Leak Rate of System Valve Table 6.2.4-1 Test (SCCM) (SCFM) Test Comments
", MIII-14 1HV-4777 #25 C 0.0CCM 1.276E-03 05/08/84 Water Test Containment ICT-145 4.83CCM spm Spray 04/28/84 Water Test MIII-15 1HV-4776 #25 C 0.0CCM Containment ICT-142 2.642E-04 05/02/84 Water Test 1.0CCM gpm 05/01/84 Water Test Spray MIII-16 ISF-011 #14 C 2.0 7.06E-05 Spent Fuel 11/17/82 ISF-012 2.0 11/17/82 Pool Cooling .
& Cleanup MIII-18 1HV-5542 #20 C 1184 4.1812E-02 03/28/84 Heating Vent. 1HV-5543
& Air Cond. 1HV-5563 MIII-19 1HV-5540 #21 C 1760 Heating Vent. 1HV-5541 6.2153E-02 11/12/83
& Air Coi.d. 1HV-5562 MIII-20 1HV-5365 #5 C 254 8.9699E-03 10/22/82 Demin & React.1HV-5366 167 10/22/82 Makeup Water MIII-21 1HV-5157 #22 C 2.0 2.797E-04 12/01/83 Vents & 1HV-5158 7.92 12/01/83 Drains MIII-22 1HV-3487 #7 812 Compressed Air ICI-030 C 2.8675E-02 12/30/82 86.4 02/06/84 Instrumentation MIII-27 ISF-021 #14 C 10.7 6.14E-04 11/17/82 Spent Fuel ISF-022 17.4 11/10/82 Pool Cooling
& Cleanup MIII-30 ILT-002 #31 B 6.3 2.22E-04 00/03/84 Compressed Air
' Service ,
MIII-31 ISF-053 #14 C 20 7.06E-04 Spent Fuel 11/11/82 1SF-054 20 11/11/82 Prol Cooling
& Cleanup
s ..
ATTACHMENT I
=.
Page 3 of 5 Penetration Typical Test Type Valve Penetration Date Isolation Schematic of Leak Rate Leak Rate of System- Valve Table 6.2.4-1 Test
, (SCCM) (SCFM) Test Comments
~
MIV-1B' 1HV-4170 #29 C 2.0 Process Sampi 1HV-4169 1.413E-03 06/14/83 20 L2/13/82 Primary Plant 1HV-4168 20 12/11/82 MIV-2B 1HV-4167 #1 C 2.0 Process Sampi 1HV-4166 1.413E-03 07/07/83 40 12/03/82 Primary Plant MIV-2C IHV-4176 #1 C, 84.1 Process Samp1 1HV-4165 2.970E-03 01/27/84 25 12/03/82 Primary Plant -
MIV-3B '1HV-4175 #30 C 2.1 Process Sampi 1HV-4171 6.004E-03 02/08/84 130 01/03/83 Primary Plant 1HV-4172 5.14 12/31/82 1HV-4173 27.5 12/09/82 1HV-4174 7.4 01/03/83
- 'MIV-3C 1HV-7311 #26 C 2.0 Process Sampi 1HV-7312 2.910E-04 01/19/84 6.24 12/07/83 Primary Plant MIV-4B 1-8871 #6 C 2.0 7.06E-04 09/30/83 Safety Inj 1-8888 20 11/30/82 8964
-MIV-4C 1HV-5556 #34 65 Process Sampi 1HV-5557 C 2.366E-03 12/23/82 67.5 12/23/82 Primary Plant MIV-8A 1HV-5544 #3 C 20 7.06E-04 12/16/82 Radiatian 1HV-5545 20 12/16/82 Monitoring LMIV-9A 1HV-5558 #3 C 2.83E-04 2 01/07/83 Process Sampi 1HV-5559 8 Primary Plant 01/07/83
- MIV-10A- 1HV-5560 #3 -C 2.0 7.06E-05 12/22/82 Process Sampi 1HV-5561 _2.0 12/22/82 Primary Plant-MIV-10C 1HV-5546 #34 C 20 7.06E-04 12/14/82 Radiation _ 1HV-5547 20 12/14/82 Monitoring b-
m ATTACHMENT I Page 4 of 5 Penetration Typical Test Type Valve Penetration Date Isolation Schematic of Leak Rate Leak Rate of System Valve Table 6.2.4-1 Test (SCCM) (SCFM) Test
. Comments MIV-11B 1-8880 #7 C 77 Safety Inj. 108968 2.719E-03 11/01/82 40.4 12/22/82 MIV-11C 1-7126 #13 C 3.21 1.134E-04 12/05/83 Waste Protect. 1-7150 3.15 12/05/83 Liquid Portion MV-1 1HV-5536 #18 C 1960 Heating Vent 1HV-5537 6.9216E-02 12/06/82
& Air Cond.
MV-2 1HV-5538 #19 C 6820 2.408E-01 12/02/82 Heating Vent 1HV-5539
& Air Cond.
MV-5 1CA-016 #7 C 146 Compressed 6.650E-03 01/23/84 1HV-3486 188.3 03/27/84 Air Service MV-6 1HV-4725 #26 C 8.8 C:mponent 3.0794E-03 10/22/82 1HV-4726 87.2 10/22/82 C:oling Wtr MV-7 ILT-004 #38 B 2.0 7.1E-05 06/17/83 Cimpressed ILT-005 Air Service ILT-006 MV-8 1-8027 #13 C 20 7.06E-04 11/24/82 Reactor Cool. 1-8026 20 11/24/82 MV-9 1HV-4708 #24 3.1 C 9.358E-03 02/10/84 Component 1HV-4701 265 04/17/84 Cooling Wtr 1CC-629 MV-10 1HV-4700 #25 108
. Component C 8.969E-03 10/05/83 1CC-713 254 03/21/84 Ccoling Wtr MV-11 1HV-4709 #24 76 Component C 2.684E-03 10/27/82 1HV-4696 50 10/27/82 Cooling Wer 1CC-831 MV-12 1HV-6084 #25 80 Chilled Wtr C 2.8159E-03 10/07/82 ICH-024 51.4 10/18/83
o, , . .
ATTACHMENT I Page 5 of 5 Penetration Typical Test Type Valve Penetration Date Isolation Schematic of Leak Rata Leak Rate of System Valve Table 6.2.4-1 Test (SCCM) (SCFM) Test Comments MV-13 1HV-6082 #28 C 525 Chilled Wer 1.7532E-02 10/07/82 1HV-6083 MV-14 1HV-5548 #19 C 1960 Heating, Vent 1HV-5549 6.9216E-02 12/17/82
& Air Cond.
MV-15 1PN-001 #31 B 2.0 7.1E-05 07/11/83 Maint. Penet MV-16 1HV-4075B #39 C 2.0 7.24E-05 03/09/84 Fire Protect 1HV-4075C 2.05 03/09/84
'MS-1 1-8811A #2 C 20 7.1246E-04 10/12/82 Safety Inj.
MS-2 1-8811B #2 1380 C 4.8730E-02 11/27/82 SOfety Inj.
- MS-3 1HV-4782 #2 787 C 2.7792E-02 10/29/82 Containment Spray MS-4 1HV-4783 #2 28.8 C 1.0171E-03 03/20/84 Centainment Spray I MS-5 N/A #23- 100.0 B 3.531E-03 12/28/82 Fuel Transfer Tube EMER AL N/A 23.0 8.12E-04 B 07/14/83 PERS AL N/A B 257 9.076E-03 09/05/83 EQT HTH N/A B 15 5.30E-04 01/12/83 ELE PEN 852-EPA 4.1 832-EPA 2.6 810-EPA 11.5 FB 2.0 MISC 6.0
8 ATTACICIENT II
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