ML20077H672
| ML20077H672 | |
| Person / Time | |
|---|---|
| Site: | Waterford  |
| Issue date: | 11/30/1982 |
| From: | EDS NUCLEAR, INC. |
| To: | |
| Shared Package | |
| ML20077H671 | List: |
| References | |
| 03-0490-1037, 03-0490-1037-R00, 3-490-1037, 3-490-1037-R, NUDOCS 8308110199 | |
| Download: ML20077H672 (15) | |
Text
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WATERFORD 3
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THERMAL AGING EVALUATION l
OF ROSEMOUNT TRANSMITTERS l
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li Prepared for:
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Louisiana Power and Light Company 4
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Prepared by:
EDS Nuclear Inc.
I 333 Technology Park / Atlanta L.
Norcross, ceorgia 30092 L
November 1982 I
EDS Report No. 03-0490-1037 Revision 0
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l 8308110199 830805 PDR ADOCK 05000382 A
edc @ nuclear
/.? PROVAL COVIRSHEET-i l
i Waterford 3 Therrr.a1 Aging Evaluation of C O O U m s at IIIlO: E 5 50unt Trarsmitters l
Control Number:- 03-0490-1037' L
isiana P wer & Light Co.
Job No. e4 90-o13-572 Client Project waterrera 3 nuclear ceneratine plant i
I Revision Record Rev. No.
Date Prepared Reviewee A
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03-0490-1037 REVISION O PAGE i 1
l TAELE CF CONTENTS Page i
Table of Contents li Executive Summary 1
1.0 INTRODUCTION
2 2.0 EQUIPMENT DESCRIPTION 2
2.1 Containment Building 2
2.2. Auxiliary Building f
4 3.0 METHOD OF ANALYSIS 4.0 ANALYSIS RESULTS 5
6
5.0 CONCLUSION
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5.1 Containment Building 6
1 5.2 Auxiliary Building 6
6.0 RECOMMENDATION 7
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7.0 REFERENCES
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e Appendix A - Arrhenius Technique Sample Calculation A-1
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023 03-0490-1037 REVISION O PAGE 11 k
EXECUTIVE
SUMMARY
This report documents the qualified lifetimes established for safety related transmitters used at the Waterford 3 Nuclear Generating Plant.
The results of our analysis, establish significant qualified
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lives for most transmitters though not greater than the plant design life.
The analysis results and recommendations are presented in detail in sectiens 5.0 and 6.0 respectively.
Qualified lives established for the transmitters are as follows.
1.
Containment Building Transmitters, i
i Qualified Life = 6.5 years i
2.
Auxiliary Building Transmitters, t
Qualified Life = 19.3 years i
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03-0490-1037 REVISION O PAGE 1 1.0 It:TRODUCTION f
This report describes the analysis and gives results for thermal aging qualification of electronic transmitters used at the Waterford 3 Nuclear Generating Plant.
The thermal aging
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qualification analysis is to be used by LP&L to satisfy the category II aging requirements of NUREG 0588.
The objective of the analysis was to determine the qualified life of Rosemount transmitters.
These transmitters are installed at various locations in the containment and auxiliary buildings at Waterford 3.
I We have performed similarity and thermal aging analyses to determine qualified lives for the transmitters.
Our findings
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show that while the qualified lives of the transmitters are less than the plant's combined 40 year normal operating and accident design life, these transmitters do have significant i
qualified lives.
These lifet'imes are given in section 5.0 of
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this report.
Detailed analysis data and results are given in References 1 i'
and 2.
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03-0490-1037 REVISION O PAGE 2 2.0 EOUIPMENT DESCRIPTION The Rosemount model 1153 series A transmitter is an electronic I
differential pressure cell, capacitance sensing instrument.
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following sections identify the specific models, quantities and service descriptions for those transmitters utilized in the Waterford l 3 containment and auxiliary buildings.
2.1 CONTAINMENT BUILDING MODEL NO.
QUANTITY SERVICE DESCRIPTION 1153 AA6 10 Containment Pressure 1153 DA3 4
Containment Fan Cooler AH-1 1153 DA4 8
Steam Generator Downcomer Level 1153 DAS 1
Main Steam Flow From SG1 1153 DAS 1
Main Steam Flow From SG2 1153 GA9 4
Steam Generator 2 Pressure Pressurizer Pressure gf;t 1153 GA9 10 1153 GA9 1
HPSI Pumps Header A Pressure 1133 GA9 1
BPSI Pumps Header B Pressure 1153 GA9 4
Steam Generator 1 Pressure 1153 BA5 2
Pressurizer Level 2.2 AUXILIARY BUILDING MODEL NO.
QUANTITY SERVICE DESCRIPTION 1153 DA3 1
Shield Bldg. Ventil Sys. Tr A DP 1153 DA3 1
shield Bldg. Ventil Sys. Tr B DP 1153 DA3 1
Shield Bldg. Ventil Sys. A ANN To AM 1153 DA3 1
Shield Bldg. Ventil Sys. B ANN
.To AM i
1153 DA3 1
Cont. Ventil Sys Tr A Press.
1153 DA3 1
Cont. Ventil Sys Tr B Press.
1153 DA3 2
Cont. Ambient Diff. Press.
1153 DA4 3
Chilled Water Flow From Chillers 1153 DA4 1
Diesel Oiler Feed Tank A Level l
1153 DA4 1
Diesel Oiler Feed Tank B Level j
1153 DAS 1
HVAC Chiller Outlet To CCW HDR A l
1153 DAS 1
HVAC Chiller Outlet To CCW HDR B 1153 DAS 1
HVAC Chiller Outlet To CCW BDR C 1153 DAS 1
Shutdown Heat Exch. JL CCW Flow
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2.2 AUXILI ARY BUILDING (con t' d)
MODEL NO.
QUANTITY SERVICE DESCRIPTION 1153 DAS 1
Shutdown Heat Exch. B CCW Flow 1153 DAS 1
Cont. Fan Cooler 3C-SA CCW Outlet l
1153 DAS 1
Cont. Fan cooler 3A-SA CCW Outlet 1152 DAS 1
Cont. Fan Cooler 3D-SB CCW Outlet 1153 DAS 1
Cont. Fan Cooler 3B-SB CCW Outlet 1153 DAS 2
Conds. Storage Pool Level l
1153 DAS 1
Cont. Spray HDR A Flow 1153 DAS 1
Cont. Spray HDR B Flow 1153 DAS 1
Emerg. FW to SGl Flow l
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1153 DAS 1
Emerg. FW to SG2 Flow i
1153 DA7 1
CCW From Cl. iller A 1153 DA7 1
CCW From Chiller B 1153 DA7 1
CCW From Chiller C 1153 GA7 2
Chilled Water to Chiller A 1153 GA7 2
Chilled Water to Chiller B 1153 GA7 2
Chiller Water to Chiller A/B 1153 GA7 3
CCW Supply HDR A&B Outlet Press
[1 1153 GA8 1
Cont. Spray Pump A Disch.
1153 DA8 1
Cont. Spray Pump B Disch.
1153 GA9 1
EFP A Disch. Press, 1153 GA9 1
EFP B Disch. Press.
1153 GA9 1
EFP A/B Disch. Press.
1153 GA9 1
MS To Emerg SG FW Pump Turbine O
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03-0490-1037 REVISION O PAGE 4 3.0 METHOD OF ANALYSIS Two methods of analysis were used to determine the qualified lives of the transmitters.
The first method was similarity analysis and the second was thermal aging analysis.
The similarity analysis evaluated the similarity (design, of the installed transmitters to construction, materials) transmitters that are currently being qualified in the Utility Transmitter Qualification Program or already have qualified lives established.
The thermal aging analysis quantitatively derived qualified lives from existing test data and operating conditions.
Materials data and information from the manufacturers were used to supplement the data.
All parameters were analyzed with respect to the category II aging requirements of NUREG 0588.
The Arrhenius model was used to predict the thermal aging lifetime considering material property degradation.
l Full details of this analysis method are given in References 1 and,'
l81 2.
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03-0490-1037 REVISION O PAGE 5 4.0 AMAtYSIS RESULTS The Arrhenius equation and applicable test data were used to perform a thermal aging analysis of the Rosemount Mcdel 1153 1
Series A transmitters.
A similarity analysis was previously performed, comparing the Rosemount Model 1153 Series A transmitters to the Rosemount Model 1153 Series D transmitters.
The results indicated that these transmitter s, although similar, have significant dif ferences.
Therefore qualification by similarity cannot be established and the results of the Utility Transmitter Qualification Program will i
not apply to the Rosemount Model 1153 Series A transmitter.
4 Activation energies developed in the Utility Transmitter Qualification Program for the model D transmitter were used for the model A transmitter for components common to both models.
The thermal aging analysis resulted in the following qualified lives:
f 1.
Containment Building
[3 Qualified Lif e = 6.5 year s 2.
Auxiliary Building
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Qualified Life = 19.3 years
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These qualified lives are based on the assumption that the i
non-metallic materials list developed by Rosemount is q
s representative of the installed transmitters.
The 12.8 year difference in the qualified lives is due to the significantly i
higher normal operating and accident temperatures for the containment building.
The normal operating and peak accident
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temperatures are as follows:
i 1.
Containment Building l
Normal operating temperature - 120*F Peak accident temperature - 277'F 2.
Auxiliary Building i
i Normal operating temperature - 104*F Peak Accident Temperature - 150'F l
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03-0490-1037 REVISICN O PAGE 6
- 5. 0 C D::0!,'qS ION S With the available documentation, the calculated qualified lives of the transmitters are significant but less than the plant design life.
These qualified lives do not imply that the transmitters will operate for the specified periods of time, but that the transmitters are not subject to common mode failure due to thermal aging.
The following sections list the qualified lifetimes:
5.1 Containment Building Qualified Life = 6.5 years e
5.2 Auxiliary Building Qualified Life = 19.3 years 9
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03-0490-1037 RIV8SION O PAGE 7
- 6. 0 FICO!".".ENDAT ION the qualified lives of the Ecsemount Model 1153 To insure that Series A transmitters are realized, we recommend the following:
l Include these transmitters in current maintenance and 1.
Calibration and maintenance surveillance programs.
procedures provided in Rosemount Instruction Manual 64295 should be followed.
2.
The cover gaskets should be replaced each time the transmitter cover is removed.
it Should random transmitter f ailures occur in the future, 3.
may be desirable to replace these transmitters with ones which have a greater qualified life.
Replacement may prove to be more beneficial than rebuilding the existing transmitters.
The qualified life of the transmitters has been found to be 4.
less than the plant design life.
Therefore these R2.
transmitters must be replaced prior to the end of their qualified life.
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03-0490-1037 REU8SZON O FAGE 8
7.0 REFERENCES
1.
EDS Calculation file 0490-013-I F-01 "Waterford in Containment Transmitter Thermal Aging Evaluation", Rev. O, November 30, 1982.
2.
EDS Calculation File 0490-013-EQF-02 "Waterford Auxiliary Building Transmitter.hermal Aging Evaluation", Rev. O November 30, 1982.
3.
" Environmental Qualification of Class IE Equipment", United States Nuclear Regulatory Commission Office of Inspection and Enforcement, IE Bulletin No.79-01B, January 14, 1980.
4
" Interim Staff Position on Environmental Qualification of Safety-Related Electrical Equipment", United States Nuclear Regulatory Commission Office of Nuclear Reactor Regulation, NURIG 0588, Rev.1, July 1981.
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03-0490-1037 REVISION O PAGE A-1 APPENDIX A AF.?. MEN!US TECHN! CUE SA"PLE CALCULATION The Arrhenius Technique for Thermal Aging is expressed as follows:
ta (1. 6 0 2 x 10 -19 )
[ l 1]
LN 1.38 x 10-23
[ Ta Ttl tt Where ta = Thermal Aging life as calculated tt = Test exposure time at temperature Tt i
Ta = Aging Temperature (normal operating temperature)
Tt = Test Temperature
$ = Activation Energy are expressed in *K ('E = *F + 459.67
)
Ta and Tt 1.8
't A sample of the Arrhenius technique as used in evaluating the Rosemount Model 1153 Series A Tranimitters is as follows-IRL Test Data:
Test data for one segment of the time - temperature test profile for l
the Rosemount Model 1153 Series A transmitters indicates a temperature of 340 'F for a period of 15 minutes.
The activation energy for this device has been determined to be 0.98.
Operating Environment:
The actual operating temperature for which the equivalent life is to be calculated is 104*F (auxiliary building).
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03-0490-1037 REVISION O PAGE A-2 Calculation:
From the above data the equivalent life is calculated as follows:
j tt = 15 minutes Ta = 104*F = 313.15 'K
= 340*F = 444.26 'K Tt l
4 = 0.98 Substituting the known data into the Arrhenius equation, ta is calculated as follows:
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.98 (1.602 x 10~1I )
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-23 15 1.38 x 10
[
313.15 444.26
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=
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= 10.7216 LN l
- 10. 216 j
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= 45,322.89 679,843.37 minutes jpt ta
=
ta
= 1.294 years l
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Attacliment 4 i
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