ML11257A057

Attachment 23, General Atomics Electronic Systems 04038903-7SP, Revision C, Qualification Basis for 04034101-001 (2-RE-90-271, -272, -273 & -274).

ML11257A057
Person / Time
Site:	Watts Bar
Issue date:	02/22/2011
From:	General Atomics
To:	Office of Nuclear Reactor Regulation
References
25402-011-V1A-HARA-00190-001 04038903-7SP, Rev. C
Download: ML11257A057 (51)

Text

Attachment 23 General Atomics Electronic Systems 04038903-7SP, Revision C, "Qualification Basis for 04034101-001 (2-RE-90-271, -272, -273 & -274)" (Non-Proprietary)

REVISIONS REV ........ .

_DESCRIPTION DATE APPROVED B INCORPORATED ECN 400000218 2-10.11 2-10-11 B. WILKINSON P. BERNER A. EVANS 2/1012011 2-10-11 A. EVANS 2-10-11 E. CABEL C INCORPORATED ECN 400000298 7,-- 2-11 P.A -5%

0.IZAL~iC I iisera P. &a-'.-

S. HUMS 2/22/2011 25402-011 -VIA-HARA-00190-001 General Atomics HARA Redacted Qualification Basis for 04034101-001 BECHTEL POWER CORPORATION I Job Number: 25402 SUPPLIER DOCUMENT REVIEW STATUS STATUS CODE; 1 Li Work may proceed. 3 [] Rejected. Revise and resubmit 1C l Workmayproceed. Editorial 4 [ Revraw not required. Work may comments need only be incorporated proceed.

if revised for other purposes.

2 [] Revise and resubmit Work may P027 8595 proceed subject to Incorporation of changes indicated.

Permission to proceed does not constitute acceptance or approval of design details, calculatons, analysis, test methods, or materials developed or selected by the Supplier and does not relieve the SEISMIC CATEGORY I Change doc.

Classification

+4. CENEURAL ATOMICS 4949GREENCRAIG LANE vELCTRONIC SVSTMS SAN DIEGO, CA 92123-1675 DRAWN DATE A,E. BUTr 1115110 CHECKED J.OWEN 12113/10 QUALIFICATION BASIS for 04034101-001 ENGR A.E.BUTT RVW. GRATZA 1206110 (2-RE-90-271, -272, -273 &-274)

PROJ MISR SIZE FSCM NO. DRAWING NO. REV P. BERNER 12113110 RELEASE S.ARTER 1.117110 A 58307 04038903-7SP C RELEASE SHEET E.(;ABEL 1,2J,7110 OR-NG LEVEL 3 SCAL.E: NONE ... 1 of 50 J, .... I

25402-011 -VIA-HARA-001 90-001 CHANGE RECORD Issue Date Description of Change Rev. A December 2010 Original Issue Rev. B February 2011 Incorporated Customer Comments Rev. C February 2011 Incorporated Customer Comments GA-ESI PROPRIETARY 04038903-7SP Rev C Page 2

25402-011-VIA-HARA-00190-001 CONTENTS 1 INTRO DUCTIO N .................................................................................................. 6 1.1 ENGINEERING AND COMMERCIAL GRADE ITEM CHANGES THAT AFFECT QUALIFICATION ............................................................................................................ 6 1.2 REPORT CONTENTS ...................................................................................................... 7 2 ENVIRONMENTAL QUALIFICATION BASIS .................................................... 8 2.1 SERVICE CONDITIONS ................................................................................................ 8 2.2 02818905-QSR COMPONENT REVIEW ...................................................................... 9 2.3 QUALIFICATION BASIS ................................................................................................ 9 2.3.1 RM-1000 and I-F ConverterModules ............................................................................................ 10 2.3.2 RD-23 Detectors............................................................................................................................. 12 3 SEISM IC Q UALIFICATIO N BASIS ................................................................... 13 3.1 SEISMIC REQUIREMENTS .......................................................................................... 13 3.1.1 Plant Equipment Seismic Requirements .................................................................................. 13 3.1.2 Seismic Requirements for Control Room and Devices ............................................................ 16 3.2 COMPONENT REVIEW ................................................................................................. 17 3.3 QUALIFICATION BASIS ................................................................................................ 18 3.3.1 NIM Bin Assembly .......................................................................................................................... 19 3.3.2 Line Filter......................................................................................................................................... 24 3.3.3 RD-23 Detector............................................................................................................................... 25 4 REPLACEM ENT SCHEDULE ............................................................................ 28 5 EM C Q UALIFICATIO N BASIS .......................................................................... 29 5.1 MONITOR SYSTEM QUALIFICATION BASIS ............................................................. 29 5.2 RADIATED SUSCEPTIBILITY ....................................................................................... 30 5.2.1 Low Frequency RadiatedSusceptibility................................................................................... 31 5.2.2 High FrequencyRadiatedSusceptibility................................................................................... 31 5.3 CONDUCTED SUSCEPTIBILITY ................................................................................ 32 5.4 IMPULSE AND BURST IMPULSE SUSCEPTIBILITY ................................................. 32 5.5 RADIATED EMISSIONS .............................................................................................. 32 04038903-7SP Rev C Page 3

25402-011 -VIA-HARA-001 90-001 5.6 CONDUCTED EMISSIONS .......................................................................................... 33 6 SOFTWARE QUALIFICATION BASIS ............................................................. 34 7 REFERENCE DOCUMENTS ............................................................................. 36 APPENDIX A POWER SUPPLY ASSEMBLY ANALYSIS ....................................... 38 A.1 INTRODUCTION .......................................................................................................... 38 A.2 APPLICABLE DOCUMENTS ....................................................................................... 38 A.3 EQUIPMENT DESCRIPTION ....................................................................................... 38 A .4 MET HO D ............................................................................................................................ 39 A.5 ACCEPTANCE CRITERIA ............................................................................................ 40 A.5.1 GA-ESI ACCEPTANCE CRITERIA ........................................................................................... 40 A.5.2 ALLOWABLE BOLT STRESS CALCULATIONS ..................................................................... 41 A.6 CONCLUSIONS ................................................................................................................. 41 A.7 STRUCTURAL INTEGRITY ANALYSIS ...................................................................... 41 A.7.1 GIVEN INFORMATION AND PARAMETERS ......................................................................... 42 A. 7.2 POWER SUPPLY ASSEMBL Y MASS ...................................................................................... 42 A. 7.3 NATURAL FREQUENCY OF THE POWER SUPPLY BRACKET .......................................... 43 A.7.4 ANAL YSIS OF SCREWS A TTACHING POWER SUPPLY ASSEMBL Y TO RM- 1000 .......... 45 A.7.5 ANALYSIS OF POWER SUPPLY BRACKET .......................................................................... 47 TABLES TABLE 2-1 ENVIRONMENTAL QUAUFICATION

SUMMARY

TABLE FOR 04034101 -001 ........................................ 10 TABLE 3-1 REQUIRED ACCELERATION VALUES FOR HIGH RANGE AREA MONITOR PLANT EQUIPMENT .............. 13 TABLE 3-2 VERTICAL REQUIRED RESPONSE SPECTRUM (BUILDING ARS) ........................................................ 14 TABLE 3-3 HORIZONTAL REQUIRED RESPONSE SPECTRUM (BUILDING ARS) .................................................. 15 TABLE 3-4 REQUIRED ANALYSIS ACCELERATIONS FOR PLANT EQUIPMENT ....................................................... 16 TABLE 3-5 REQUIRED ACCELERATION VALUES (ARS) FOR THE CONTROL ROoM ............................................. 16 TABLE 3-6 REQUIRED RESPONSE SPECTRUM FOR DEVICES ............................................................................ 17 TABLE 3-7 SEISMIC QUAUFICATION

SUMMARY

TABLE FOR GA-ESI P/N 04034101-001 ................................... 18 TABLE 4-1 HIGH RANGE AREA MONITOR REPLACEMENT SCHEDULE ............................................................... 28 TABLE 5-1 ELECTROMAGNETIC COMPATIBILITY TEST RESULTS FOR RM-1000, I-F CONVERTER, AND RD-23 ....... 30 TABLE A-1 LIST OF EQUIPMENT ANALYZED UNDER SEISMIC CONDITIONS ......................................................... 38 TABLE A-2 REQUIRED ACCELERATIONS FOR GENERIC STRUCTURAL ANALYSIS ............................................... 40 TABLE A-3 GIVEN INFORMATION AND PARAMETERS ......................................................................................... 42 TABLE A-4 POWER SUPPLY ASSEMBLY MASS .................................................................................................. 43 04038903-7SP Rev C Page 4

25402-011 -VIA-HARA-00190-001 TABLE A-5 NATURAL FREQUENCY OF THE POWER SUPPLY BRACKET ............................................................. 44 TABLE A-6 ANALYSIS OF SCREWS ATTACHING POWER SUPPLY ASSEMBLY TO NIM BIN .............................. 46 TABLE A-7 ANALYSIS OF POWER SUPPLY BRACKET ................................ ............................................... 48 FIGURES FIGURE2-1 I-F CONVERTER MODULE ASSEMBLY (04501351-001) ............................................................. 12 FIGURE 3-1 VERTICAL REQUIRED RESPONSE SPECTRUM (ARS) FOR PLANT EQUIPMENT ................................ 14 FIGURE 3-2 HORIZONTAL REQUIRED RESPONSE SPECTRUM (ARS) FOR PLANT EQUIPMENT .......................... 15 FIGURE 3-3 REQUIRED RESPONSE SPECTRUM FOR DEVICES ................................................................... 17 FIGURE 3-4 04508905-QR VERTICAL RESPONSE SPECTRA FOR NIM BIN ASSEMBLY ................................... 22 FIGURE 3-5 04508905-QR HORIZONTAL RESPONSE SPECTRA FOR NIM BIN ASSEMBLY ............................. 23 FIGURE 3-6 E-254-0960 VERTICAL RESPONSE SPECTRA (ARS) FOR RD-23 DETECTOR ............................. 26 FIGURE 3-7 E-254-0960 HORIZONTAL RESPONSE SPECTRA (ARS) FOR RD-23 DETECTOR ....................... 27 FIGURE A-1 POWER SUPPLY ASSEMBLY ANALYSIS .................................................................................. 39 FIGURE A-2 ANALYSIS OF SCREWS ATTACHING POWER SUPPLY ASSEMBLY TO RM-1 000 .............................. 45 FIGURE A-3 ANALYSIS OF POWER SUPPLY BRACKET .......................................................................... 48 04038903-7SP Rev C Page 5

25402-011-VIA-HARA-00190-001 1 INTRODUCTION This Qualification Basis Report for GA-ESI P/N 04034101-001 High Range Area Monitor System provides the evaluation and justification to demonstrate the environmental, seismic, Electromagnetic Compatibility (EMC), and software qualification. This report is a supplement to the principle report GA-ESI report 04038903-QSR. GA-ESI report 04038903-QSR provides the following:

" Equipment Description Section 2.7

• Environmental Qualification Requirements Sections 3.2 and 3.2.7

• Seismic Qualification Requirements Section 3.3 and Figures 3-4 though 3-7 and 3-14 through 3-16 and CEB-SS-5.10 R3, Figure 3-1.

• EMC Qualification Requirements Section 3.4

" Software Qualification Requirements Section 3.5

" GA-ESI's Environmental Qual Program Section 4.2

• GA-ESI's Seismic Qual Program Section 4.3

" GA-ESI's EMC Qual Program Section 4.4

" GA-ESI's Software Qual Program Section 4.5 1.1 ENGINEERING AND COMMERCIAL GRADE ITEM CHANGES THAT AFFECT QUALIFICATION This qualification report is based on the configuration of the monitor assembly on September 24, 2010.

In addition to qualifying assemblies and components by similarity, changes made to these parts and systems are reviewed and addressed in this report as follows:

Some parts of the equipment qualified in this report have changes from those like-numbered parts that were qualified in the reports referenced in this report. All revisions and changes to parts that are Commercial Grade Items, and were qualified in the referenced qualification reports, have been evaluated and justified for qualification equivalency during the normal parts database management process. This qualification evaluation during parts database change is standard, in accordance with GA-ESI Operating Procedure OP-4.0-190. Similarly, all revisions and changes to any subassembly parts that were qualified in the referenced qualification reports have been evaluated and justified during the standard 04038903-7SP Rev C Page 6

25402-011 -V1 A-HARA-001 90-001 Engineering Change Notice (ECN) process, in accordance with GA-ESI Operating Procedure OP-4.0-130.

1.2 REPORT CONTENTS This report consists of the following sections.

Section 1. INTRODUCTION. This section describes the reason for the report, its organization, identification of the radiation monitors being qualified, and a description of the contents of each section.

Section 2. ENVIRONMENTAL QUALIFICATION BASIS. This section demonstrates the environmental qualification of the equipment by similarity to equipment and components successfully tested to requirements equal to or better than the requirements for the radiation monitors being supplied.

Section 3. SEISMIC QUALIFICATION BASIS. Section 3 documents the integrity of the monitor system during seismic conditions. This is accomplished by demonstrating that the Test Response Spectra for similar equipment envelops the Required Response Spectra for the equipment location and by analysis.

Section 4 REPLACEMENT SCHEDULE. This section provides the replacement schedule for components whose life is less than 40 years.

Section 5. ELECTROMAGNETIC COMPATIBILITY QUALIFICATION BASIS: Section 5 describes the tests conducted to document EMC and reported in GA-ESI document 04038800.

Section 6. SOFTWARE QUALIFICATION BASIS: The Software Qualification Basis section describes the history of software configuration control and testing in accordance with the requirements of a 10 CFR Part 50 Appendix A Quality Assurance program. The Verification and Validation program for the RM-1000 software has been reported in a number of reports which are identified in the section.

Section 7. REFERENCE DOCUMENTS. This section lists the GA-ESI documents and drawings referenced in the body of the report.

04038903-7SP Rev C Page 7

25402-011-VIA-HARA-00190-001 2 ENVIRONMENTAL QUALIFICATION BASIS The environmental qualification of the High Range Area Monitor System, GA-ESI P/N 04034101-001, is based on previously completed qualification tests, GA-ESI design review, and manufacturers design specifications. The monitor system is Safety Related and required for Post Accident Monitoring.

2.1 SERVICE CONDITIONS The High Range Area Monitor Systems are located in several areas of the Watts Bar Unit 2 nuclear power plant. The service conditions in those areas are given in GA-ESI document 04038903-QSR and are summarized below.

• RD-23 High Range Detectors: These detectors are located in the Containment Upper and Lower Compartment areas. These are Harsh environment areas and the detectors are required to operate during and after accident conditions. The service conditions given below are the most severe conditions in the two locations:

Average Temperature:

Abnormal Temperature:

Abnormal Humidity:

Normal Radiation:

Accident Temperature Accident Pressure:

Accident Humidity:

Accident Radiation:

Post Accident Operating Time:

Chemical Spray: - -

04038903-7SP Rev C Page 8

25402-011 -VI A-HARA-001 90-001 RM-1000 NIM Bin Assembly and Line Filter: These components are located in the control room area. The service conditions are:

Average Temperature:

Abnormal Temperature Range:

Abnormal Humidity Range:

Normal Radiation:

2.2 02818905-QSR COMPONENT REVIEW A review of the High Range Area Monitor System list of materials was made for major assemblies that were previously environmentally qualified by GA-ESI report 02818905-QSR.

The TVA tag numbers and their representative components were qualified as part of the GA-ESI report 02818905-QSR. Specifically, the RD-23 detector (GA-ESI P/N 03602062-001), a NIM Bin assembly (GA-ESI P/N 02810279-001), and an RP-2C module (GA-ESI P/N 02810410-002) were qualified. The RD-23 detector being qualified is that same as that qualified by 02818905-QSR and its qualification basis will not be repeated in this report. The RP-2C module has been replaced by an RM-1 000 and I/F converter and will be qualified by this report.

2.3 QUALIFICATION BASIS This section describes the basis for the qualification of the High Range Area Monitor System.

The detectors are qualified for a Harsh environment and the Control Room components for a Mild environment. Therefore, the detectors are qualified for normal, abnormal, accident, and post-accident service conditions. The Control Room components are qualified for normal and abnormal service conditions, but they must operate through the accident and post accident periods in those service conditions.

For Mild environments, GA-ESI type tests computer based assemblies that are designed and manufactured by GA-ESI to abnormal extremes to demonstrate performance over the temperature and humidity range that the assemblies may experience in service. Certain other assemblies, whose performance may be affected by extremes, designed and manufactured by GA-ESI, are also tested at temperature and humidity extremes. All other components and assemblies are selected for the generic service conditions and approved through a design review and commercial grade dedication process (in accordance with GA-ESI procedure OP-7.3-240). Performance and functionality of the monitor assembly are demonstrated by the final Acceptance Test Procedure (ATP). A certificate of compliance is provided with the accepted 04038903-7SP Rev C Page 9

25402-011 -VIA-HARA-001 90-001 assembly. Components and modules that have a life less than 40 years are identified in Section 4, Replacement Schedule.

For Harsh environments, GA-ESI type tests all components for normal, abnormal, accident, and post accident service conditions to demonstrate that those components will perform their safety functions.

The detectors, located in the Upper and Lower Containment Compartment environment, have a normal radiation total dose greater than GA-ESI levels of qualification. A radiation review of each part in the assemblies was performed using TVA RIMS report #B43'860721903 as the basis for qualifying the equipment to higher levels of radiation. The results of that review are given in GA-ESI report 02818905-QSR.

Environmental Qualification Summary Table 2-1 identifies the assemblies that are qualified by test and the test article that was utilized to demonstrate that qualification. The subsequent subsections describe that testing performed for each assembly and compare the test article with the assembly being qualified.

Table 2-1 Environmental Qualification Summary Table for 04034101-001 Component GA-ESl P/N Test Article Qual Report Qual Section High Range Area Monitor System 04034101-001 NIM Bin Assembly 04030801-001 RM-1000 w/Relay Interface 04501200-004 04501000-001 04508905-1SP 2.3.1 I-F Converter Module 04501351-003 04506150-001 04508905-2SP 2.3.1 RD-23 Detector 03602062-001 02818905-QSR 2.3.2 2.3.1 RM-1000 and I-F Converter Modules Similar RM-1000 Module (GA-ESI P/N 04501000-001) and I-F Converter Module (GA-ESI P/N 04506150-001), to the RM-1000 Module (GA-ESI P/N 04501200-004) and I-F Converter Module (GA-ESI P/N 04501351-003) being qualified, were tested as a unit connected to an o the extremes of temperature and humidity as reported in 04508905-OR. The modules being qualified are modifications to the tested modules and are qualified by similarity by supplement GA-ESI reports 04508905-1SP (RM-1000 Module) and 04508905-2SP (I-F Converter Module). The difference between the modules reported in the above reports 04038903-7SP RevC Page 10

25402-011-VIA-HARA-001 90-001 (04508905-QR, 04508905-1SP, and -704508905-2SP) and the modules being qualified is the color of the front panel paint and is judged in-significant.

The RM-1000 and I-F Converter Module test article components with age related failure mechanisms were age conditioned to near end of life. **vas performed for ach from The applied line voltage was set at and -

T The modules met the acceptance criteria.

• tests were performed at with a IThe RM-1000 and I-F Converter passed all performance tests. The RM-1000 and I-F converter are considered qualified environmentally.

2.3.1.1 RM-1000 Module The RM-1000 module (GA-ESI P/N 04501200-004) is similar to the RM-1000 module (GA-ESI P/N 04501000-001) tested and reported in GA-ESI document 04508905-QR. A detail comparison between the GA-ESI P/N 04501200-001 & -002 (P/N 04501200-004 is the same except paint color) and GA-ESI P/N 04501000-001 is provided in GA-ESI document 04508905-1SP (Supplement 1). The significant differences are listed below:

" The The original Mis no longer available.

• The Keypad/Display Printed Wiring Assembly (PWA)

" The CPU

" The Output PWA was changed to accommodate the new voltage of as required by the original The RM-1000 Planar display (GA-ESI P/N 50016021-001) is similar to the RM-2000 display unit. The new display module is the same manufacturer and model series as the RM-2000 display. The only difference is size where the RM-1000 display is smaller than the RM-2000. Both displays are Safety Related, Class 1E and Seismic Category I qualified.

2.3.1.2 I-F ConverterModule The I-F Converter module (GA-ESI P/N 04501351-003) is similar to the I-F Converter module (GA-ESI P/N 04501301-001) tested and reported in GA-ESI document 04508905-OR. The differences between GA-ESI P/N 04501301-001 and GA-ESI P/N 04501351-001 & -002 (P/N 04038903-7SP RevC Page11

25402-011 -VI A-HARA-001 90-001 04501351-003 is the same except paint color) as provided in GA-ESI document 04508905-2SP (Supplement 2) are:

• The external enclosure. A standard

• is used for GA-ESI P/N 04501351-003 in place of base used for GA-ESI P/N 04501301-001.

" The connectors mounting location. The same connectors are used for both modules. The is on the whereas the GA-ESI P/N 04501301-001 connector mounting is on the cover of the metal box.

" The wiring length. The wiring for the to the connectors is the= for the GA-ESI P/N 04501301-001 module.

Connector JA is for the signal connector from the RD-23A detector and connector J3 is for the output signal from the I-F Converter to the RM-1000.

_o the I-F Converter (from the RM-1000).

2.3.2 RD-23 Detectors The RD-23 detectors (GA-ESI P/N 03602062-001) are qualified for a Harsh environment and post accident monitoring. Refer to GA-ESI report 02818905-QSR for qualification basis.

04038903-7SP RevC Page 12

25402-011 -VIA-HARA-001 90-001 3 SEISMIC QUALIFICATION BASIS The seismic qualification of the High Range Area Monitor System, GA-ESI P/N 04034101-001, is based on previously completed seismic tests and analysis. This section describes the basis for the seismic qualification. The monitor is Seismic Category I.

3.1 SEISMIC REQUIREMENTS The High Range Area Monitor System is safety related and is required to operate during or after an earthquake. For qualification by random is used to ensure that the Test Response Spectra envelopes the Required Response Spectra. For analysis the values of ZPA and peak acceleration shall be based on 3.1.1 Plant Equipment Seismic Requirements The requirements for the seismic qualification of the High Range Area Monitor RD-23 detector located in the plant are found in GA-ESI document 04038903-QSR, Figures 3-4 through 3-7.

The ZPA and peak acceleration values for plant equipment are given in Table 3-1. The values provided in Table 3-1 represent the highest accelerations of both the Upper and Lower Containment Compartments. East-West spectra were provided by the customers Figure C1.180. Since the detector is attached to the building walls, the ARS defines the RRS.

Table 3-1 Required Acceleration Values for High Range Area Monitor Plant Equipment Parameter Vertical North-South East-West-Testing Zero Period Acceleration (ZPA) - g's

= Acceleration - g's Analysls*

Zero Period Acceleration - g's Peak Acceleration - g's For comparison of the Test Response Spectra (TRS) with the Required Response Spectra (RRS) a simplified RRS curve is constructed using the information given in GA-ESI document 04038903-QSR Figures 3-4 through 3-7 and Table 3-1, as follows. The governing North-South 04038903-7SP RevC Page 13

25402-011 -VI A-HARA-001 90-001 spectra provided in GA-ESI document 04038903-QSR envelopes the East-West spectra provided by the customer.

• Vertical: The spectrum given in GA-ESI document 04038903-QSR Figure 3-4 and 3-6 are to envelope the RRS shown in those figures. The vertical RRS is shown in Figure 3-1 (Data in Table 3-2).

• Horizontal: The spectra given in GA-ESI document 04038903-QSR Figures 3-5 and 3-7 are broadened, and simplified to envelope the north-south RRS in those figures. The horizontal RRS is shown in Figure 3-2 (Data in Table 3-3).

Vertical Required Response Spectrum

• 10 0.1 1 10 100 1000 Frequency, Hertz Figure 3-1 Vertical Required Response Spectrum (ARS) for Plant Equipment Table 3-2 Vertical Required Response Spectrum (Building ARS)

TIME PERIOD FREQUENCY ACCELERATION (SEC.) (Hz) (G's 1.000 1 0.25 0.556 1.8 0.42 0.323 3.1 0.42 0.167 6 1.7 0.125 8 1.7 0.100 10 0.95 0.048 21 0.95 0.025 40 0.34 04038903-7SP RevC Page 14

25402-011 -VIA-HARA-00190-001 Horizontal Required Response Spectrum 10 T F u n41 -~j~r l4~j~~

1 10 100 1000 Frequency, Hertz Figure 3-2 Horizontal Required Response Spectrum (ARS) for Plant Equipment Table 3-3 Horizontal Required Response Spectrum (Building ARS)

TIME PERIOD FREQUENCY ACCELERATION (SEC.) (Hz) (G's) 1.000 1 0.45 0.333 3 1.2 0.200 5 6.4 0.167 6 6.4 0.083 12 1.6 0.025 40 1.04 For analyzing structural and support elements the values given in Table 3-1 are modified by multiplying the peak and ZPA values by 0 Peak values times 0 are used if the natural frequency of the element being analyzed is not calculated or the natural frequency is in the dynamic range (< 33 Hz). ZPA values times Ws conservatively used if the natural frequency is calculated and is in the rigid range (> 33 Hz). The required accelerations are calculated directly from the Table 3- Table 3-4 provides the required accelerations for analysis.

04038903-7SP RevC Page 15

25402-011 -VIA-HARA-00190-001 Table 3-4 Required Analysis Accelerations for Plant Equipment Analysis Method Vertical Max Horizontal Acceleration Acceleration g's g's

• 1*-

Natural Frequency not Calculated or in the Dynamic Range Natural Frequency Calculated and in Rigid Range 3.1.2 Seismic Requirements for Control Room and Devices The requirements for the seismic qualification of the High Range Area Monitor equipment located on the control room floor and walls (ARS) are found in GA-ESI document 04038903-QSR, Figures 3-14, 3-15, and 3-16. The ZPA and peak acceleration values for the ARS are given in Table 3-5.

Table 3-5 Required Acceleration Values (ARS) for the Control Room Parameter Vertical North-South East-West Testing Zero Period Acceleration (ZPA) - g's Peak Acceleration - g's Analysiss)

Zero Period Acceleration - g's Peak Acceleration - g's For qualification by testing, the Required Response Spectra (RRS) for devices is constructed using the information given in CEB-SS-5.10 Rev. 3, Figure 3.1. This figure is used for testing individual parts. This RRS is shown in Figure 3-3 (Data in Table 3-6). Figures 3-4 and 3-5 show that this RRS is enveloped by the TRS of the RM-1000 and the NIM Bin assembly.

04038903-7SP RevC Page16

25402-011-VIA-HARA-00190-001 Table 3-6 Required Response Spectrum for Devices 3.2 COMPONENT REVIEW A review of the High Range Area Monitor System list of materials was made for major assemblies that were previously seismically qualified by GA-ESI report E-115-0459. Major assemblies for this monitor have not been qualified by GA-ESI report E-1 15-0459, therefore, this qualification basis is for all assemblies and components.

04038903-7SP RevC Page 17

25402-011 -VIA-HARA-001 90-001 3.3 QUALIFICATION BASIS This section describes the basis for the seismic qualification of the High Range Area Monitor System. The monitor system is qualified as seismic Category I and is required to be functional during and after a seismic event.

GA-ESI seismically qualifies radiation monitoring systems by test and structurally by analysis.

Generally, components and assemblies that are tested are tested functionally as well as ensuring the seismic adequacy of the structure. GA-ESI has tested the radiation monitoring systems using test methods. Conservative analysis is performed in GA-ESI document 04038903-QSR.

The Seismic Qualification Summary Table 3-7 identifies the assemblies that are qualified by test or analysis. The test article that was utilized to demonstrate qualification is provided as well as the test report. The subsequent subsections describe the testing or analysis for each assembly and compare the test article or the structure analyzed with the assembly being qualified.

Table 3-7 Seismic Qualification Summary Table for GA-ESI P/N 04034101-001 Component GA-ESI P/N Test Test Article Qual Qual Component Report Section High Range Area Monitor 04034101-001 NIM Bin Assembly 04030801-001 04500801-001 04500801-001 04508905-OR 3.3.1 NIM Bin Assembly Frame 04502001-004 04502001-001 04502001-001 04508905-OR 3.3.1.1 RM-1000 w/relay Interface Board 04501200-004 04501000-001 04501000-001 04508905-iSP 3.3.1.2 I-F Converter Module 04501351-003 04506150-001 04506150-001 04508905-2SP 3.3.1.2 Power Supply w/Bracket 04500850-001 04038903-7SP 3.3.1.3 (analysis)

Power Supply 04502050-001 04502005-001 04500801-001 04508905-QR 3.3.1.4 Line Filter 50015790-001 04438901-QSR, 3.3.2 Appendix A (Analysis)

RD-23 Detector 03602062-001 03602062-001 03602062-001 E-254-0960 3.3.3 04038903-7SP RevC Page 18

25402-011 -Vl A-HARA-00190-001 3.3.1 NIM Bin Assembly The Control Room NIM Bin Assembly (GA-ESI P/N 04030801-001) contains RM-1000 and I-F Converter Modules as well as the power supply assembly. The components are qualified individually by test and analyses of similar components discussed in the following subsections.

The NIM Bin Assembly is similar to the NIM Bin Assembly used for the qualification testing of the original 24 volt power supply, the RM-1 000 and the I-F Converter Modules.

3.3.1.1 NIM Bin Assembly Frame The NIM Bin Assembly frame (GA-ESI P/N 04030801-001) is an all metal structural support for the RM-1000 module, the I-F Converter Module, and 24 volts DC power supply and, therefore, requires seismic qualification. The NIM Bin Assembly frame is similar to the tested NIM Bin Assembly Frame (GA-ESI P/N 04502001-001). The test article with the subassemblies installed was tested seismically as reported in GA-ESI document 04508905-QR. The RM-1000 NIM Bin Assembly was subjected and Shutdown Earthquakes (SSE).

and The Test Response Spectra (TRS) for a typical SSE in the X-Y plane are shown in Figures 3-4 and 3-5. The RM-1000 NIM Bin Assembly and its mounting hardware successfully passed this testing. The assembly frame is considered qualified.

3.3.1.2 RM-1000 Modules The RM-1000 module (SE P/N 04501200-004) is similar to the RM-1000 modules tested (GA-ESI P/N 04501000-001) and reported in GA-ESI document 04508905-OR and 04508905-1SP. GA-ESI report 04508905-1SP provides a similarity analysis. The RM-1000 modules limited life components were age conditioned prior to performing these tests.

Following the environmental qualification test, the RM-1000 Module was given a seismic qualification test as reported in GA-ESI document 04508905-QR. A pre-seismic functional test was performed on RM-1 000 module.

04038903-7SP RevC Page 19

25402-011 -VI A-HARA-001 90-001 The modules passed the functional test.

The RM-1000 modules were placed in a power up and test condition. Selected closed contacts of the alarm relays were monitored for chatter throughout the tests. A current and voltage analog output from each module was monitored throughout the test.

The modules were subjected to as described in Section 3.3.1.1. The typical TRSs are shown in Figures 3-4 and 3-5. The relays did not chatter and there was no loss of analog signal throughout the testing.

Following the seismic testing the modules were given a post-seismic functional test. The RM-1000 modules passed the test and are considered seismically qualified.

3.3.1.3 I-F ConverterModules The I-F Converter Module (GA-ESI P/N 04501351-001) is similar to the tested I-F Converter (GA-ESI P/N 04506150-001) and reported in GA-ESI document 04508905-QR. The similarity analysis for the I-F Converter Module is provided in GA-ESI report 04508905-2SP.

Following the environmental qualification test, the I-F Converter Module was given a seismic qualification test as reported in GA-ESI document 04508905-QR. A pre-seismic functional test was performed.

The modules passed the functional test.

~04038903-7SP Rev C Page 20

25402-011 -VI A-HARA-001 90-001 The I-F Converter Module was subjected to the same seismic testing as the RM-1000 Modules.

The I-F Converter Module remained functional during those tests. The TRS versus RRS curves for the tests are shown in Figures 3-4 and 3-5. The module passed a post seismic functional test and is considered qualified. The figures show that the TRS fully enveloped the RRS (CEB-SS-5.10 Rev. 3, Figure 3-1) shown in Figure 3-3.

04038903-7SP Rev C Page 21

25402-011 -VIA-HARA-001 90-001 04038903-7SP Rev C Page 22

25402-011-VIA-HARA-00190-001 04038903-7SP RevC Page 23

25402-011 -VIA-HARA-001 90-001 3.3.1.4 Power Supply Bracket The Power Supply Bracket (GA-ESI P/N 04502017-001 and -002) and its bolt mounting are analyzed in Appendix A using the calculated weight and analyzed at in all directions.

The analyses show that the stress levels of the bracket assembly are within the allowable stresses for both the GA-ESI generic and TVA specific cases. The power supply bracket is considered seismically adequate and qualified.

3.3.1.5 Power Supply The 24 Volt Power Supply (GA-ESI P/N 04502050-001) is attached to the bracket qualified in 3.3.1.4 and to the back of the NIM Bin Assembly and provides power to the RM-1000 and I-F Converter Modules. The power supply is a replacement power supply for the originally tested power supply (GA-ESI P/N 04502005-001). GA-ESI document 04508905-QR demonstrates that the replacement power supply is similar to the test article, since they are by the same manufacturer and model series. The replacement power supply has a higher current rating and, therefore, slightly heavier. The Technical Evaluation further demonstrates that the slightly greater weight does not affect the seismic qualification.

The original power supply (test article) parts that had age related failure mechanisms (aluminum electrolytic capacitors, transformer, coils, and wire) were age conditioned as described in GA-ESI document 04508905-QR. The age conditioned parts were then assembled into the two power supplies that were mounted on the rear of the NIM Bin Assembly Frame and provided power to the RM-1000 processor modules being qualified. Sections 3.3.1.1, 3.3.1.2, and 3.3.1.3 described the tests performed. The low voltage power supply is considered seismically qualified.

3.3.2 Line Filter The separately provided line filter is qualified by analysis described in GA-ESI document 04438901-QSR, Appendix A7. The line filter is an It is consider rigid and, Pereore, LP1aceleraion levels pus margin are used for the analysis. The accelerations used ar in all three axes. These are much greater than the accelerations required to meet - rol Room panel seismic requirements (Figure 3-3). The maximum principal stresses in the fasteners are

__ These are well within the TVA stress allowable.

04038903-7SP Rev C Page 24

25402-011 -VIA-HARA-00190-001 3.3.3 RD-23 Detector The RD-23 Detector (GA-ESI P/N 03602062-001) is the same detector as the tested RD-23 Detector reported in GA-ESI report E-254-0960. The seismic tests were Mwith the test article attached rigidly to the shake table in the same configuration as the unit being qualified would be in the field. There wasn't any amplification between the shake table and the mounting location. An RP-2C Module was connected to the RD-23 detector throughout the testing and a

= output from the detector was used during the testing to verify operation. The test article was given 0 Operating Basis Earthquake (OBE) tests and 0 Safe Shutdown Earthquake (SSE) test then rotated f and the test sequence repeated.

Figures 3-6 and 3-7 shows the accelerometer response at the detector and compares the f STest Response Spectra (TRS) to the Required Response Spectra (RRS). The test article remained intact and functional throughout the testing and is considered qualified. The detector passed a post seismic functional test and is considered qualified.

04038903-7SP RevC Page 25

25402-011-VIA-HARA-00190-001 04038903-7SP Rev C Page 26

25402-011-VIA-HARA-00190-001 Report No. 58567 WYLE LABORATORIES CUSTOMER 6-4' fC Job No.. Page No. 5, Pull Scale / Accel. No. S_____ Control C ) Response operator -- Specimen . rkIa2irftc Err __

Date /M Damping 123r Axis of Teat A-V RESPONSE SPECTRUM a a 4 8 67 I t oo 2 a 4 IS p a1 If aI 'i 4 IA B J lIIq, m0_ .,o.....

/,

I 4m

• iTRS 5% DAMPING II

'p D I I a I

. 11. 111 -01 1-1.11111ý 7?fII r

,tttli ,r fQin K30 Effio. f~lA KOL flift~me FNAKAM KIý-

I'tff'ffl"lfff-M ht-il 11 H Io

'I .......

I 61

......... . a i i i iisim i Fi H I I t j4111 f

2 2

I 10I I I I FRQUENCY Hz Figure 3-7 E-254-0960 Horizontal Response Spectra (ARS) for RD-23 Detector 04038903-7SP Rev C Page 27

25402-011-VIA-HARA-00190-001 4 REPLACEMENT SCHEDULE The replacement schedule for components that contain parts with significant aging mechanisms is provided in this section. The replacement schedules provided in Table 4-1 are based on an Lifetime for components in enclosures include an A dash entry indicates a higher-level assembly that does not require replacement but contains the component to be replaced. The individual components to be replaced are listed with a qualified life in years.

Table 4-1 High Range Area Monitor Replacement Schedule Component GA-ESI P/N Life @ 86°F Notes Years High Range Area Monitor 04034101-001 ---

NIM Sin Assembly 04030801-001 ---

RM-1 000 Module Assembly 04501200-004 ---

Front Plate Assembly 04501260-001 Keypad/Display PWA 04503070-001 ...

Keypad 87YY3616A-534 Gas Plasma Display 50016021-001 Output PWA 04503080-001 Display/Keypad Cable 04502018-002 Assembly 24 Volt Power Supply 04502050-001 Notes:

04038903-7SP Rev C Page 28

25402-011 -VI A-HARA-001 90-001 5 EMC QUALIFICATION BASIS This section demonstrates that GA-ESI P/N 04034101-001 (High Range Area Monitor System) is Electromagnetic Compatibility (EMC) qualified for operation in an industrial environment similar to that found at TVA's Watt Bar Unit 2. The EMC qualification basis is established by demonstrating that GA-ESI's EMC qualification tests on the radiation monitoring systems meets the intent of the requirements for replacement radiation monitors.

The High Range Area Monitor System consists of The Customer Connection Diagram (GA-ESI drawing 04034120) shows the major components of the system as well as their electrical interconnections. The following subsections describe the EMC Qualification Basis for the system as a whole; the NIM Bin Assembly consisting of the RM-1000 Module, the I-F Converter Module, and the associated power supply; the RD-23 Detector; and the power line filter.

5.1 MONITOR SYSTEM QUALIFICATION BASIS The monitor system uses the latest technology and components developed and tested to ensure Electromagnetic Compatibility. have been added to power input circuits and components that could generate noise, such as relays.

Tests have been conducted individually, using the latest standards available at the time, on the radiation monitor's microprocessor and their associated detector.

GA-ESI has performed the tests on a Echannel RM-1000 radiation monitoring system the configuration of which is shown in GA-ESI drawing 04509000 System Installation Configuration, RFI/EMI Test, RM-1000 the results of which are issued in GA-ESI report 04038800, RM-1000 EMC Test Report, TVA and 04509050, RM-1000 EMC Test Report. The equipment tested used an RM-1000 microprocessor radiation monitor Display/Control NIM Bin Assembly, an I-F Converter, line filter, and an RD-23 detector. The monitor system being qualified is the same as the monitor system tested and includes ECO-1 7656 modifications to ensure EMC compliance.

Table 5-1 lists the results for the tests performed, demonstrating that the tested radiation monitoring system meets the intent of the requirements of TVA specification SS E18.14.01 Revision 3. The subsections that follow the table discuss results that require additional explanation.

04038903-7SP Rev C Page 29

25402-011-VIA-HARA-00190-001 Table 5-1 Electromagnetic Compatibility Test Results for RM-1 000, I-F Converter, and RD-23 Test Method Parameter TVA Requirement Results Section Low Frequency Radiated Evaluate Frequency M 5.2.1 Susceptibility High Frequency Radiated IEC 1000-4-3 Frequency 5.2.2 Susceptibility Amplitude **

Low Frequency Conducted MIL-STD-461 D Frequency 5.3 Susceptibility (CS-1 01) Amplitude High Frequency IEC 1000-4-6 Frequency 5.3.1 Conducted Susceptibility Amplitude Surge Susceptibility IEC 1000-4-5 Test Level M Impulse and Burst of IEC 1000-4-4 Test Level M 5.4 Impulses Susceptibility -E-Electrostatic Discharge IEC 1000-4-2 Contact MO Air -EN Radiated Emissions CENELEC Emission M 5.5 EN 55011 Group 1 Class A

Conducted Emissions MIL-STD-461D Emission M 5.6 CE-102 5.2 RADIATED SUSCEPTIBILITY TVA specification SS E18.14.01 R3 section 8.1 specifies the requirements to demonstrate the equipment is not susceptible to low and high frequency radiated electromagnetic fields. The frequency range specified is from This is divided into a low frequency range fromr and a high frequency range from Each will be discussed separately in the following subsections.

04038903-7SP Rev C Page 30

25402-011-V1A-HARA-00190-001 5.2.1 Low Frequency Radiated Susceptibility The low frequency electromagnetic fields found in control room area generally Such is the case with the RM-1000, I-F Converter, power supply, and line filter. They are installed i The cable to the RD-23 is required to be installed in and the RD-23 detector As further evidence that the RM-1000 and I-F Converter are a test was conducted as part of the EMC testing reported in GA-ESI report 04038800 in accordance with IEC 61000-4-8. A was swept across the surface of the no susceptibilities found. The High Range Area Monitor System is considered acceptable.

5.2.2 High Frequency Radiated Susceptibility 1 sets of tests demonstrate compliance with TVA specification SS E18.14.01 R3 section 8.1. The first test was conducted using ag detector and an RM-1000. In this case an I-F Converter is not required and the pulses from the ietector are essentially the same as theg from the I-F Converter. The EUT was subjected to af l from and from with sine wave modulation frequency of and a ffrom the surface. The RM-1000 passed this test.

The second test was conducted using an RM-1000, I-F Converter, and an RD-23 ion chamber detector. The EUT was subjected to a and from with sine wave modulation frequency of and a distance of

• surface. The RM-1000 and I-F Converter passed this test.

The third test was conducted with the same configuration as the second test. The EUT was subjected to a with sine wave and a from the surface. The RM-1 000 and I-F Converter passed this test.

The above demonstrates that the RM-1000 is not susceptible to electric field strengths of E and the I-F Converter from I-F Converter is not susceptible to electric field strengths ofE g The I-F Converter has not 04038903-7SP RevC Page 31

25402-011 -VI A-HARA-001 90-001 been tested at 5.3 CONDUCTED SUSCEPTIBILITY The conducted susceptibility tests are divided into low frequency and high frequency tests. The low frequency tests were conducted on the AC power lines without problems and passed the requirements. The high frequency conducted susceptibility tests were run at

• for the RM-1000, I-F Converter, and the RD-23 ion chamber on the cables identified in the report without problems. The TUV report does not include this test; however, it is reported in GA-ESI report 04038800 section 7.A.

The RM-1000, I-F Converter, and RD-23 area monitor system is considered to have passed this test at rms.

5.4 IMPULSE AND BURST IMPULSE SUSCEPTIBILITY Electrical Fast Transient tests were conducted in accordance with IEC 1000-4-4 (IEC 801, part 4). The power lead test passed a= with the addition o on the high voltage and signal leads to the RD-23 and is considered acceptable. The data cables were tested attM. The tests were and all passed successfully which corresponds to IEC 1000-4-4 severity level I and is consider appropriate for a "typical industrial environment' such as a power plant. Evaluation is required to ensure that= on data lines is within actual plant conditions.

5.5 RADIATED EMISSIONS Tests were conducted in accordance with CENELEC EN 55011 Group 1, Class A from Emissions were less than

• over the frequency range with the addition of cables. This is well below the EPRI TR-102323 Figure 7.4 requirements and is considered acceptable.

04038903-7SP Rev C Page 32

25402-011-VIA-HARA-00190-001 5.6 CONDUCTED EMISSIONS Tests were conducted in accordance with MIL-STD-461D CE-102 from 10 kHz to 400 MHz on each power line conductor. Emissions were well below Figure 7.2 of EPRI TR-102323 for

'Highest Composite Plant Emissions Envelope' and conducted emissions are considered acceptable.

04038903-7SP Rev C Page 33

25402-011 -VI A-HARA-001 90-001 6 SOFTWARE QUALIFICATION BASIS The RM-1000 software has been thoroughly Verified & Validated to the latest standards available in 1998. Version 1.2 was approved for use in similar monitors delivered to Browns Ferry Plant, based on TVA Specification SS-E18.15.01, Rev. 3.

Software Qualification for the TVA Replacement Radiation Monitors is based on the requirements described in GA-ESI document 04038903-QSR section 3.5 for software developed under a 10 CFR 50 Appendix B program. The qualification demonstrates that the software V&V program meets the intent of RG1.152-2005 by describing the requested information in TVA specification SS-E18.15.01, Rev. 3 section 5.2.

GA-ESI's software qualification program is in accordance with 10CFR 50 Appendix B. Formal configuration control and error reporting fully meet the requirements of 10CFR50 Appendix B as well as 10CFR Part 21.

In the late 1990s, during the development of the RM-1000 Radiation Monitor, a formal verification and validation program was completed to demonstrate that the RM-1000 meets all regulatory and standards for safety related digital microprocessors. The standards and regulatory documents used for this V&V program were:

• NRC Regulatory Guides: RG-1.152 R1(Jan 1996) and RG-1.153 R1(Jun 1996)

• ANSI/IEEE-ANS: 7-4.3.2-1982

• ANSI/ANS: 10.4-1987 0 ANSI/IEEE: 610.12-1990, 730.1-1989, 828-1990, 830-1984, 1012-1986, 1016-1987, 1028-1988, 1042-1987, and 1063-1987.

• IEC: 323-1.974

• EPRI: TR-102348 (March 1993), TR-102323 (Sept 1994)

The results of the V&V are reported in the following GA-ESI documents.

• 04507000 RM-1000 System Requirements Specification 0 04507001 RM-1000 Software Requirements Specification

• 04507006 RM-1000 System Test Procedure Specification

• 04507007-1 TR RM-100OSystem Verification Test Results 04038903-7SP Rev C Page 34

25402-011 -VI A-HARA-001 90-001

• 04507040 RM-1 000 System Test Plan / Test Design Specification

• 04507042 RM-1000 Software Verification and Validation Plan

• 04507043 RM-1000 Computer Program Development Plan

• 04507047 RM-1000 Software Quality Assurance Plan

• 04508903-1TR Seismic Qualification Test Results

• 04508904 Functional Test Procedure for RM-1 000 and I/F Converter These reports demonstrate that the RM-1000 Radiation Monitoring System software meets the requirements for verification and validation of safety related software.

04038903-7SP Rev C Page 35

25402-011 -VI A-HARA-001 90-001 7 REFERENCE DOCUMENTS GA-ESI DRAWINGS 04034100 OUTLINE, HIGH RANGE AREA MONITOR SYSTEM 04034101 HIGH RANGE AREA MONITOR SYSTEM 04034120 CUSTOMER CONNECTION DIAGRAM, HIGH RANGE AREA MONITOR SYSTEM GA-ESI DOCUMENTS 02818905-QSR ENVIRONMENTAL QUALIFICATION

SUMMARY

REPORT FOR CLASS 1E EQUIPMENT FOR WATTS BAR UNITS 1 &2 04038800 RM-1000 EMC TEST REPORT, TVA 04238905-QSR ENVIRONMENTAL QUALIFICATION

SUMMARY

REPORT FOR CONTAINMENT ATMOSPHERE, R-1 1/12 04507000 RM-1000 SYSTEM REQUIREMENTS SPECIFICATION 04507001 RM-1000 SOFTWARE REQUIREMENTS SPECIFICATION 04507006 RM-1000 SYSTEM TEST PROCEDURE SPECIFICATION 04507007-1 TR RM-1000 SYSTEM VERIFICATION TEST RESULTS 04507040 RM-1000 SYSTEM TEST PLAN /TEST DESIGN SPECIFICATION 04507042 RM-1000 SOFTWARE VERIFICATION AND VALIDATION PLAN 04507043 RM-1000 COMPUTER PROGRAM DEVELOPMENT PLAN 04507047 RM-1000 SOFTWARE QUALITY ASSURANCE PLAN 04508903-1TR SEISMIC QUALIFICATION TEST RESULTS 04508904 FUNCTIONAL TEST PROCEDURE FOR RM-1 000 AND I/F CONVERTER 04508905-OR QUALIFICATION TEST REPORT FOR RM-1000 PROCESSOR MODULE AND CURRENT-TO-FREQUENCY CONVERTER 04508905-1S P SUPPLEMENT TO QUALIFICATION TEST REPORT FOR RM-1000 PROCESSOR MODULE AND CURRENT-TO-FREQUENCY CONVERTER 04508905-2SP SUPPLEMENT TO QUALIFICATION TEST REPORT FOR RM-1000 PROCESSOR MODULE AND CURRENT-TO-FREQUENCY CONVERTER

-04038903-7SP Rev C Page 36

25402-011-VIA-HARA-00190-001 E-254-0960 TEST REPORT CLASS 1E DESIGN QUALIFICATION TESTING OF ANALOG HIGH RANGE RADIATION MONITOR (RD-23, RP-2C, RP-23, AND RP-20-01) 04038903-QSR QUALIFICATION

SUMMARY

REPORT FOR WATTS BAR NUCLEAR PLANT UNIT 2 REPLACEMENT RADIATION MONITORS 04238908 SURGE PROTECTOR/FILTER SEISMIC ANALYSIS OP-4.0-130 ENGINEERING CHANGE ORDERS OP-4.0-190 MAINTENANCE OF THE ESI DATA BASE

-04038903-7SP Rev C Page 37

25402-011 -VIA-HARA-00190-001 APPENDIX A POWER SUPPLY ASSEMBLY ANALYSIS A.1 INTRODUCTION This appendix analyzes the RM-1000 NIM Bin Power Supply Assembly to demonstrate that it will maintain structural integrity during an earthquake at the Watts Bar Unit 2 Nuclear Power Plant.

A.2 APPLICABLE DOCUMENTS 04500850 POWER SUPPLY ASSEMBLY, 24V 04502017 BRACKET, POWER SUPPLY, 24V 04502050-001 POWER SUPPLY, 24V CEB-SS-5.10 R3 TVA SPECIFICATION FOR SEISMIC QUALIFICATION OF ELECTRICAL, MECHANICAL, AND I&C DEVICES A.3 EQUIPMENT DESCRIPTION Table A-1 lists the analysis performed and its associated subsection for the power supply assembly. The worst case condition is the stress on the four screws attaching the power supply assembly to the back of the RM-1000 NIM Bin module. The natural frequency of the power supply bracket is calculated as well as the highest stress bracket cross section. The four screws attaching the terminal block/fuse assembly to the bracket have much less stress than the four screws being analyzed. They are the same size and hold much less weight. Figure A-1 shows the power supply assembly and identifies the locations being analyzed.

Table A-1 List of Equipment Analyzed under Seismic Conditions Equipment GA-ESI P/N Type of Analysis Appendix Section Power Supply Assembly 04500850-001 Natural frequency of the power supply A7.3 bracket Analysis of screws attaching the power A7.4 supply assembly to the back of the RM-1000 module.

Analysis of the bracket cross section A7T5 04038903-7SP RevC Page 38

25402-011-VIA-HARA-00190-001 A.4 METHOD GA-ESI's seismic analyses use the following conservative approach. The natural frequency of the component being analyzed is determined, if feasible. Components in the rigid range (natural frequencies greater than 33 hertz) use the Zero Period Acceleration (ZPA) times to provide margin. If the natural frequency of the component being analyzed cannot be determined, the peak acceleration found for the appropriate damping level on the RRS (ARS), plus any amplification, multiplied by 0 is used. The result, of the method used, is the acceleration of the mass concentrated at its center of gravity.

Power Supply Assembly is attached to the back of the NIM Bin module installed in the Control Room panel which has high g low frequency accelerations in all directions. Therefore, the seismic analysis uses the maximum acceleration shown in Figure 3-3 of = from

• with a multiplication factor of N for multimodal considerations.

04038903-7SP Rev C Page 39

25402-011 -VI A-HARA-001 90-001 The frequency analysis for the Power Supply bracket A.7.3 shows that the

-in Section lowever the maximum acceleration shown in Figure 3-3 of = with a multijplication factor of is used for the bracket analysis.

Seismic forces (plus weight) are independently applied to the center of mass in the three orthogonal axes that produce the highest stress in the part. The tensile and shear stresses are calculated for each reaction. Stresses of the same type are combined using either the root of the sum of their squares or their sum, if acting in the same direction. The maximum shear and tensile stresses are then calculated and compared to the material allowable stresses.

In cases where a single RRS (ARS) is specified for the horizontal axis, the acceleration may be taken as the maximum acceleration acting in one direction. The components can be analyzed for the maximum acceleration acting separately in the x axis, the z axis, and at a 45 degree angle with the x and z axis.

The analyses are performed using Microsoft Excel.

A.5 ACCEPTANCE CRITERIA A.5.1 GA-ESI ACCEPTANCE CRITERIA GA-ESI has established acceptance criteria for generic analysis of structural elements of radiation monitoring system in order to use the analysis for most customer seismic conditions. These criteria are conservative using generic RRS curves established for generic qualification testing. GA-ESI's RRS are based on

• and the accelerations used are given in Table A-2.

Table A-2 Required Accelerations for Generic Structural Analysis Analysis Method Vertical Horizontal Acceleration Acceleration g's g's Natural Frequency not Calculated or in the Dynamic Range Natural Frequency Calculated and in Rigid Range Cabinet Dynamic Accelerations a x Figure 3-3) 04038903-7SP Rev C Page 40

25402-011 -VI A-HARA-001 90-001 GA-ESI uses the following conservative allowable stress relationships.

1. Total maximum allowable principal tensile stress is M times the yield strength of the material.

2. Total maximum allowable principal shear stress is M imes the yield strength of the material.

A.5.2 ALLOWABLE BOLT STRESS CALCULATIONS The allowable stresses for ductile materials for non-pressure boundary members, welds, and threaded fasteners are given by GA-ESI document 04038903-QSR:

a. Pure Shear:

b. Pure Tension Where Su = minimum ultimate tensile strength

= applied shear stress d tensile stress A.6 CONCLUSIONS The analyses, of the equipment listed in Table A-i, demonstrate that the equipment's design is adequate and meets the acceptance criteria for both GA-ESI Generic and TVA Control Room applications.

A.7 STRUCTURAL INTEGRITY ANALYSIS The following subsections demonstrate the structural integrity of the equipment listed in Table A-i. The subsections are organized as follows:

• A7.1 Given information and parameters

• A7.2 Calculation of the mass of the bracket and attached components

• A7.3 Calculation of the power supply bracket natural frequency 04038903-7SP RevC Page 41

25402-011-VIA-HARA-00190-001

• A7.4 Analysis of screws attaching the bracket to the RM-1000 module

• A7.5 Analysis of power supply bracket A.7.1 GIVEN INFORMATION AND PARAMETERS Table A-3 provides information regarding the strength of the materials being analyzed and the seismic accelerations to be used for the analyses. Note: for the generic analysis the horizontal acceleration is resolved to an x-axis and z-axis component by taking its RMS value at a 45 degree angle.

Table A-3 Given Information and Parameters DESCRIPTION VARIABLE VALUE UNITS NOTES Vertical Acceleration av g's 1 Horizontal Acceleration ah g's 1 Screw (ASTM A581-75 303SS) yield Sy-screw psi 2 Screw (ASTM A581-75 303SS) tensile St-screw psi 2, 3 Bracket Material (300 series SS) yield Sy-bracket psi 2, 3 Bracket Material (300 series SS) tensile St-bracket psi 2 Screw Area (6-32UNC-2A) Ascrw sq in 2 Notes:

1. Natural frequency calculated and in the rigid range,

2. Standard Handbook for Mechanical Engineers 7 th edition

3. Lowest tensile and yield for all 300 series SS.

A.7.2 POWER SUPPLY ASSEMBLY MASS Table A-4 is a list of the power supply assembly parts and the components that are attached to the power supply bracket and their masses. The calculation of the mass of the power supply assembly and its components is basis on known weights, calculated weights, and conservative 04038903-7SP Rev C Page 42

25402-011 -VIA-HARA-001 90-001 estimates for items where weights were not found. A

• has been added for miscellaneous items and unknown weights.

Table A-4 Power Supply Assembly Mass Description GA-ESI P/N Weight Units Notes Power Supply Bracket 04502017-001 lbs 1 Power Supply Plate 04502017-002 lbs 1 Power Supply 04502050-001 - lbs 2 Fuse holder 50004078-001 lbs 3 Fuse 50008728-001 lbs 3 Terminal Block, 6 pos 50015642-001 lbs 3 Hardware (screws, washers, retainers) Various lbs 3 Wire Various - lbs 3 Margin (10%) --- lbs Total m, w lbs Notes:

2.

3.-

A.7.3 NATURAL FREQUENCY OF THE POWER SUPPLY BRACKET Table A-5 analyzes the natural frequency of the power supply bracket. The up-down direction is 0therefore, the side-to-side direction is analyzed for the first natural frequency. The power supply is Ifrequency. The power supply is considered 04038903-7SP Rev C Page 43

25402-011 -VI A-HARA-001 90-001 Table A-5 Natural Frequency of the Power Supply Bracket Description Formula Value Units Notes Modulus of Elasticity 303 SS E psi 2 Moment of Inertia m_

Graviational Acceleration g in/sec 2 End Load W lbs Length of the bracket 1 K in Weight of bracket per inch W lbs/in Natural Frequency Hz 3 Notes:

1. The natural frequency is calculated in the 2.

3.

04038903-7SP Rev C Page44

25402-011 -V1 A-HARA-001 90-001 A.7.4 ANALYSIS OF SCREWS ATTACHING POWER SUPPLY ASSEMBLY TO RM-1000 This subsection analyzes the screws that attach the power supply assembly to the back of the RM-1000 NIM Bin. The analysis is performed using the TVA accelerations which are similar to the GA-ESI generic accelerations for the same location. The analysis, shown in Table A-6, includes both GA-ESI and TVA allowable stresses. Figure A-2 shows the power supply assembly, the center of mass, and forces acting on the center of mass and screws.

04038903-7SP Rev C Page 45

25402-011 -VI A-HARA-001 90-001 Table A-6 Analysis of Screws Attaching Power Supply Assembly to NIM Bin Description Formula Value Units Notes x dimension X in y Dimension K in Y

y Distance between screws K in z Distance between screws II in Force x and Reaction x lbf Force y and Reaction y lbf Force z and Reaction z - lbf Moment x in-lbs Moment y = in-lbs I

Moment z in-ibs Iu Tensile force on each screw lbf Tensile Stress on each screw psi Shear force on each screw lbf 04038903-7SP Rev C Page 46

25402-011 -VI A-HARA-001 90-001 Description Formula Value Units Notes Shear Stress on each screw psi Combined Maximum Tensile psi Stress Combined Maximum Shear psi GA-ESI Allowable Generic Tensile - psi GA-ESI Generic Shear psi Allowable Tensile Allowable psi Shear Allowable psi Combined Allowable psi Notes:

1. Conservative Estimate A.7.5 ANALYSIS OF POWER SUPPLY BRACKET This subsection analyzes the power supply bracket. The analysis is performed using the TVA accelerations which are similar to the GA-ESI generic accelerations for the same location. The analysis, shown in Table A-7, includes both GA-ESI and TVA allowable stresses. Figure A-3 shows the power supply assembly, the center of mass, and forces acting on the center of mass and screws.

04038903-7SP Rev C Page 47

25402-011 -VI A-HARA-001 90-001 Table A-7 Analysis of Power Supply Bracket 04038903-7SP Rev C Page 48

25402-011 -VI A-HARA-001 90-001 Description Formula Value Units Notes

-~1 f 4 Force x and Reaction x lbf Force y and Reaction y lbf Force z and Reaction z lbf Area of the each bracket sq in section Ab 4 +

Moment y in-lbs U

+

Moment z in-lbs U

Tensile force on each bracket Ibf section Tensile Stress on each bracket psi section I Shear force on each bracket section

- lbf Shear Stress on each bracket section U psi Combined Stress Maximum Tensile

-own_

• psi Combined Maximum Shear - psi Stress-GA-ESI Allowable Generic Tensile - psi GA-ESI Generic Shear - psi Allowable 04038903-7SP Rev C Page 49

25402-011-VIA-HARA-00190-001 Notes:

1.*

04038903-7SP Rev C Page 50