Text

Attachments 23 Through 24, WNA-DS-01667-WBT-NP, Revision 5 and CAW-11-3301, Post Accident Monitoring System - System Design Specification
	ML11341A137
Person / Time
Site:	Watts Bar
Issue date:	11/30/2011
From:	; Tennessee Valley Authority
To:	; Office of Nuclear Reactor Regulation
References
	CAW-11-3301, WNA-DS-01667-WBT-P, Rev 5 WNA-DS-01667-WBT-NP, Rev 5
	Download: ML11341A137 (81)
	v • d • e

Attachment 23 Westinghouse Electric Company non-proprietary document WNA-DS-01667-WBT-NP,"Post Accident Monitoring System -System Design Specification," Revision 5 (non-proprietary) (Letter Item 8) 9tWestinghouse Westinghouse Non-Proprietary Class 3 Nuclear Automation Watts Bar Unit 2 NSSS Completion Program I&C Projects Post Accident Monitoring System -System Design Specification WNA-DS-01667-WBT-NP, Rev. 5 November 2011 APPROVALS Function Name and Signature Author Matthew A. Shakun*Engineer, Nuclear Automation Licensing Reviewer Shawn M. Downey*Principal Engineer, Safety System Support & Upgrades Stephanie L. Smith*Project Manager, Common Q PAMS Approver Maria E. Assard*Product Manager, Safety System Support & Upgrades*Electronically approved records are authenticated in the electronic document management system.WESTINGHOUSE NON-PROPRIETARY CLASS 3© 2011 Westinghouse Electric Company LLC All Rights Reserved Nuclear Automation Watts Bar Unit 2 NSSS Completion Program I&C Projects Post Accident Monitoring System -System Design Specification LIST OF CONTRIBUTORS Revision Name and Title 1,2,4, 5 Jenna L. Tyger Editorial Specialist, Technical Communications 3 Stephanie L. Smith Editorial Specialist, New Plant Safety Support Systems Template Version 2.0 WNA-DS-01667-WBT-NP, Rev. 5 i Westinghouse Non-Proprietary Class 3 Nuclear Automation Watts Bar Unit 2 NSSS Completion Program I&C Projects Post Accident Monitoring System -System Design Specification REVISION HISTORY RECORD OF CHANGES Revision Author Description 1 Digish R. Shah Added brackets to WNA-DS-01667-WBT, Rev. 1, to indicate proprietary information.

2 Digish R. Shah Added brackets to WNA-DS-01667-WBT, Rev. 2, to indicate proprietary information.

3 Digish R. Shah* Updated reference revisions:

Reference 1, 4, 10* Updated Acronyms* Updated Figures: Figure 2.1-1, 4.4-1* Added: SDS4.4.2.3-2

Revised: SDS4.4.1.1-2, SDS4.4.1.2-3, R4.4.1.3-1, SDS4.4.2.1-1, R4.4.2.3-1, R4.4.3- 1, R4.4.3-21* Updated traceability:

SDS3.3-1, SDS4.3.1-1, SDS4.3.1-2, SDS4.3.1-3, R4.4.1.1-2, SDS4.4.1.2-3, SDS4.4.1.2-6, SDS4.4.2.1-3, R4.4.2.1-1, R4.4.2.3-2, R4.4.3-16, SDS5.1-1, SDS5.2-2, SDS5.2-3* Removed typographical errors: Section 4.4, SDS5.2-1* Reworded FE switch and SLE switch to FE keyswitch and SLE keyswitch throughout the document for consistency

Updated reference revisions:

Reference 1* Updated Figures 2.1-1 and 4.2-2* Revised: SDS4.2.1.2-2, SDS4.2.1.3-3, SDS4.3. 1-1, SDS4.3.1-3, SDS4.4.2.1-3

Added R4.4.2.1-4 0 S Revised: SDS5. 1 -1 Minor editorial and formatting Changes were made.WNA-DS-01667-WBT-NP, Rev. 5 ii Westinghouse Non-Proprietary Class 3 VirNA-DS-01667-WBT-NP, Rev. 5 ii Westinghouse Non-Proprietary Class 3 Nuclear Automation Watts Bar Unit 2 NSSS Completion Program I&C Projects Post Accident Monitoring System -System Design Specification DOCUMENT TRACEABILITY

& COMPLIANCE Created to Support the Following Document(s)

Watts Bar Unit 2 Post Accident Monitoring System -System Requirements Specification t Document Number WNA-DS-01617-WBT-P OPEN ITEMS Item Description Status None WNA-DS-01667-WBT-NP, Rev. 5 iii Westinghouse Non-Proprietary Class 3 V^A-DS-01667-WBT-NP, Rev. 5 iii Westinghouse Non-Proprietary Class 3 Nuclear Automation Post Accident Monitoring System -Watts Bar Unit 2 NSSS Completion Program I&C Projects System Design Specification TABLE OF CONTENTS Section Title Page LIST OF CONTRIBUTORS

.......................................................................................

i REVISION HISTORY ...........................................................................................

ii TABLE OF CONTENTS .......................................................................................

iv LIST OF TABLES ..................................................................................................

vi LIST OF FIGURES ...............................................................................................

vi ACRONYM S AND TRADEM ARKS .........................................................................

vii GLOSSARY OF TERM S ......................................................................................

ix REFERENCES

......................................................................................................

x REQUIREM ENTS ...................................................................................................

xi SECTION 1 INTRODUCTION

.......................................................................................................

1-1 1.1 PURPOSE ....................................................................................................................

1-1 1.2 SCOPE .........................................................................................................................

1-1 1.3 FORM AT OF THE DOCUM ENT ........................................................................

1-1 1.3.1 Requirement Compliance

............................................................................................

1-1 1.3.2 Requirements Specification Format .........................................................................

1-1 1.3.3 Design Statement Format .............................................................................................

1-2 SECTION 2 PAM S ARCHITECTURE DESCRIPTION

................................................................

2-1 2.1 PAM S OVERVIEW .............................................................................................

2-1 2.2 PAM S ARCHITECTURE

...........................................................................................

2-1 SECTION 3 PAM S FUNCTIONALITY

.........................................................................................

3-1 3.1 PAM S FUNCTIONALITY OVERVIEW ...................................................................

3-1 3.2 M TP FUNCTIONALITY

............................................................................................

3-1 3.3 OM FUNCTIONALITY

..............................................................................................

3-1 SECTION 4 PAM S HARDW ARE CONFIGURATION

.................................................................

4-1 4.1 PAMS HARDWARE CONFIGURATION OVERVIEW ..........................................

4-1 4.2 PAM S CABINET ........................................................................................................

4-3 4.2.1 Cabinet Layout .............................................................................................................

4-3 4.2.1.1 Common Q Power Supply Layout ...............................................................................

4-5 4.2.1.2 RF616 Primary Subrack Layout ..................................................................................

4-5 4.2.1.3 M TP Layout .................................................................................................................

4-9 4.2.1.4 RF620 Extension Subrack Layout ...............................................................................

4-10 4.2.2 Cabinet Numbering

......................................................................................................

4-11 4.3 M TP/OM CONFIGURATION

....................................................................................

4-11 4.3.1 Keylock Switches ........................................................................................................

4-11 WNA-DS-01667-WBT-NP, Rev. 5 iv Westinghouse Non-Proprietary Class 3 Nuclear Automation Post Accident Monitoring System -Watts Bar Unit 2 NSSS Completion Program I&C Projects System Design Specification TABLE OF CONTENTS (Cont'd)Section Title Page 4.4 HARDW ARE DESCRIPTION

...................................................................................

4-13 4.4.1 Common Q Qualified Hardware ..................................................................................

4-13 4 .4 .1.1 C ab in et .........................................................................................................................

4 -13 4.4.1.2 AC160 M odules ...........................................................................................................

4-13 4.4.1.3 1/0 Termination Units ..................................................................................................

4-29 4.4.1.4 FPD System .................................................................................................................

4-30 4.4.1.5 Power Supply System ..................................................................................................

4-30 4.4.2 PAM S Standard Hardware Subassemblies

..................................................................

4-32 4.4.2.1 Interposing Relay Panel (IRP) .....................................................................................

4-32 4.4.2.2 Cabinet Temperature Sensors ......................................................................................

4-34 4.4.2.3 Field Terminal Blocks .................................................................................................

4-34 4.4.2.4 Input Power Distribution Breaker Panel (AC) .............................................................

4-34 4.4.2.5 DC Distribution Breaker Assembly .............................................................................

4-35 4.4.2.6 Auxiliary Power Supply ...............................................................................................

4-35 4.4.2.7 Primary Subrack -USA and USB Feeds .....................................................................

4-36 4.4.2.8 Extension Subrack -USA and USB Feeds ..................................................................

4-36 4.4.2.9 DP Cell Power Supplies ...............................................................................................

4-36 4.4.2.10 TC514 Fiber Optic M odems ........................................................................................

4-37 4.4.2.11 Cabinet Door Switches ................................................................................................

4-37 4 .4 .3 C ab ling .........................................................................................................................

4 -3 7 SECTION 5 INTERFACES AND COM M UNICATIONS

..............................................................

5-1 5.1 M TP DATA LINK .......................................................................................................

5-1 5.2 AF 100 BUS COM M UNICATION

..............................................................................

5-1 SECTION 6 GROUNDING AND COOLING REQUIREMENTS

.................................................

6-1 6.1 EARTHING SCHEM E ................................................................................................

6-1 6.2 CABINET/COM PONENT COOLING .......................................................................

6-1 6.3 CABINET LOAD BREAKDOW N .............................................................................

6-2 WNA-DS-01667-WBT-NP, Rev. 5 V Westinghouse Non-Proprietary Class 3 WNA-DS-01667-WBT-NP, Rev. 5 V Westinghouse Non-Proprietary Class 3 Nuclear Automation Wafts Bar Unit 2 NSSS Completion Program I&C Projects Post Accident Monitoring System -System Design Specification TABLE OF CONTENTS (Cont'd)LIST OF TABLES Title Table Page Table 4.4-1.Table 4.4-2.Table 4.4-3.Table 4.4-4. [Table 4.4-5.Table 4.4-6. [Table 4.4-7A.Table 4.4-7B. [Table 4.4-8A.Table 4.4-8B. [Table 4.4-9A.Table 4.4-9B. [Table 4.4-10A.Table 4.4-10B.Table 6.3-1. [a,c .....................................

4-14]ac ....................................

4 -16]a,.c ......................................

4-17]a,c ...............................

4-19]"'c .................................

4-19]ac ..................................

4-20]a"' ...................................................

4 -22]ac .................................................

4 -2 3]ac .............................................................

4 -24]ac .............................................................

4 -2 5]ac .............................................................

4 -2 6]ac ..................................................

4 -2 7]a'c ..............................................................

4 -2 8]ac ................................................

4 -29]ac .........................................................

6-2 LIST OF FIGURES Figure Title Page Figure 2.1-1. [Figure 4.1-1. [Figure 4.2-1. [Figure 4.2-2. [Figure 4.4-1. [Figure 5.2-1. []a,c ....................................................................................................

2 -2]ac ..................................................................

4 -2]ac ....................................................................................

4 -4]ac ........................................

4-8]ax ....................................................

4 -3 1]ac ......................................................

5 -2 WNA-DS-01667-WBT-NP, Rev. 5 Ai Westinghouse Non-Proprietary Class 3 Nuclear Automation Post Accident Monitoring System -Watts Bar Unit 2 NSSS Completion Program I&C Projects System Design Specification ACRONYMS AND TRADEMARKS Acronyms used in the document are defined in WNA-PS-00016-GEN, "Standard Acronyms and Definitions" (Reference 4), or included below to ensure unambiguous understanding of their use within this document.Acronyms Definition AC Alternating Current AL Analog Input AO Analog Output d/p Differential Pressure DC Direct Current DI Digital Input DO Digital Output DP Differential Pressure Transducer FE Function Enable FOM Fiber Optic Modem FPD Flat Panel Display HISCH Hydraulic Isolator Status Contact (Head)HISCHL Hydraulic Isolator Status Contact (Hot Leg)HISCS Hydraulic Isolator Status Contact (Seal Table)HMI Human Machine Interface ICC Inadequate Core Cooling IRP Interposing Relay Panel MTP Maintenance and Test Panel OM Operator's Module PAMS Post Accident Monitoring System PS Power Supply RCS Reactor Coolant System RTD Resistance Temperature Detector RVLIS Reactor Vessel Level Instrumentation System SLE Software Load Enable TC Thermocouple TRBL Trouble TU Termination Unit WDT Watchdog Timer Advant is a registered trademark of ABB Process Automation Corporation.

IBM is a trademark of International Business Machines Corporation in the United States, other countries, or both.QNX is a registered trademark of QNX Software Systems GmbH & Co. KG ("QSSKG")

and is used under license by QSS.WNA-DS-01667-WBT-NP, Rev. 5 vii Westinghouse Non-Proprietary Class 3 Nuclear Automation Post Accident Monitoring System -Watts Bar Unit 2 NSSS Completion Program I&C Projects System Design Specification ACRONYMS AND TRADEMARKS (Cont'd)Common Q is a trademark or registered trademark in the United States of Westinghouse Electric Company LLC, its subsidiaries and/or its affiliates.

Unauthorized use is strictly prohibited.

All other product and corporate names used in this document may be trademarks or registered trademarks of other companies, and are used only for explanation and to the owners' benefit, without intent to infringe.VVNA-DS-0l667-WBT-NP, Rev. 5 viii Westinghouse Non-Proprietary Class 3 Nuclear Automation Watts Bar Unit 2 NSSS Completion Program I&C Projects Post Accident Monitoring System -System Design Specification GLOSSARY OF TERMS Standard terms used in the document are defined in WNA-PS-00016-GEN, "Standard Acronyms and Definitions" (Reference 4), or included below to ensure unambiguous understanding of their use within this document.Term None.Definitions WNA-DS-01667-WBT-NP, Rev. 5 ix Westinghouse Non-Proprietary Class 3 WNA-DS-01667-WBT-NP, Rev. 5 ix Westinghouse Non-Proprietary Class 3 Nuclear Automation Post Accident Monitoring System -Watts Bar Unit 2 NSSS Completion Program I&C Projects System Design Specification REFERENCES Following is a list of references used throughout this document.1. WNA-DS-01617-WBT-P, Rev. 4, "Watts Bar Unit 2 Post Accident Monitoring System -System Requirements Specification," Westinghouse Electric Company LLC.2. 00000-ICE-30155, Rev. 9, "System Requirements Specification for the Common Q Generic Flat Panel Display," Westinghouse Electric Company LLC.3. 00000-ICE-30159, Rev. 02, "Hardware Requirements Specification for the Common Q Power Supply System," Westinghouse Electric Company LLC.4. WNA-PS-00016-GEN, Rev.5, "Standard Acronyms and Definitions," Westinghouse Electric Company LLC.5. Regulatory Guide 1.75, Rev. 02, "Physical Independence of Electrical Systems," Nuclear Regulatory Commission.

6. IEEE 384-1992, "Standard Criteria for Independence of Class 1E Equipment and Circuits," Institute of Electrical and Electronics Engineers, 1992.7. IEEE 383-2003, "Standard for Type Test of Class 1E Electric Cables, Field Splices, and Connections for Nuclear Power Generating Stations," Institute of Electrical and Electronics Engineers, 2003.8. Deleted.9. Deleted.10. 2E10022, Rev. 4, "Safety System Standard 7721 Seismic Cabinet," Westinghouse Electric Company LLC.WNA-DS-01667-WBT-NP, Rev. 5 X Westinghouse Non-Proprietary Class 3 Nuclear Automation Watts Bar Unit 2 NSSS Completion Program I&C Projects Post Accident Monitoring System -System Design Specification REQUIREMENTS Design and/or other requirements have been identified in this document.

Following is a list of the requirement numbers and the document page on which the requirement is identified.

SDS2.2-1 ................

2-1 SDS3.1-1 ................

3-1 SDS3.2-1 ................

3-1 SDS3.3-1 ................

3-1 SDS4.2.1-1

.............

4-3 SDS4.2.1-2

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4-3 SDS4.2.1-3

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4-3 SDS4.2.1-4

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4-3 SDS4.2.1-5

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4-3 SDS4.2.1-6

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4-3 R4.2.1.1-1

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4-5 SDS4.2.1.1-1

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4-5 SDS4.2.1.1-2

..........

4-5 SDS4.2.1.1-3

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4-5 SDS4.2.1.1-4

..........

4-5 SDS4.2.1.1-5

..........

4-5 R4.2.1.2-1

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4-5 R4.2.1.2-2

..............

4-5 R4.2.1.2-3

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4-5 R4.2.1.2-4

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4-6 R4.2.1.2-5

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4-6 SDS4.2.1.2-1

..........

4-6 SDS4.2.1.2-2

..........

4-6 SDS4.2.1.3-1

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4-9 SDS4.2.1.3-2

..........

4-9 R4.2.1.3-1

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4-9 SDS4.2.1.3-3

..........

4-9 R4.2.1.3-2

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4-9 R4.2.1.3-3

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4-9 R4.2.1.3-4

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4-9 R4.2.1.3-5

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4-9 R4.2.1.3-6

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4-9 R4.2.1.4-1

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4-10 R4.2.1.4-2

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4-10 R4.2.1.4-3

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4-10 R4.2.1.4-4

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4-10 R4.2.1.4-5

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4-10 R4.2.1.4-6

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4-10 R4.2.2-1 .................

4-11 SDS4.3-1 ................

4-11 R 4.3-1 ....................

4-11 SDS4.3.1-1

..............

4-11 SDS4.3.1-2

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4-11 SDS4.3.1-3

..............

4-11 R4.3.1-1 ..................

4-11 R4.3.1-2 ..................

4-12 R4.3.1-3 ..................

4-12 R4.4-1 .....................

4-13 R4.4.1.1-1

...............

4-13 SDS4.4.1.1-1

...........

4-13 R4.4.1.1-2

...............

4-13 SDS4.4.1.2-1

...........

4-13 SDS4.4.1.2-2

...........

4-13 SDS4.4.1.2-3

...........

4-14 SDS4.4.1.2-4

...........

4-14 R4.4.1.2-1

...............

4-14 SDS4.4.1.2-5

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4-15 R4.4.1.2-2

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4-15 R4.4.1.2-3

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4-15 SDS4.4.1.2-6

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4-18 R4.4.1.2-4

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4-18 R4.4.1.2-5

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4-18 SDS4.4.1.2-7

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4-18 SDS4.4.1.2-8

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4-18 SDS4.4.1.2-9

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4-20 R4.4.1.2-6

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4-20 SDS4.4.1.2-10

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4-22 R4.4.1.2-7

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4-22 R4.4.1.2-8

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4-24 R4.4.1.2-9

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4-26 R4.4.1.2-10

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4-28 R4.4.1.3-1

...............

4-29 SDS4.4.1.4-1

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4-30 R4.4.1.5-1

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4-30 SDS4.4.1.5-1

...........

4-30 SDS4.4.1.5-2

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4-30 R4.4.1.5-2

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4-30 SDS4.4.1.5-3

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4-30 R4.4.1.5-3

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4-30 R4.4.1.5-4

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4-30 R4.4.1.5-5

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4-30 R4.4.1.5-6

...............

4-31 WNA-DS-01667-WBT-NP, Rev. 5 Ai Westinghouse Non-Proprietary Class 3 Nuclear Automation Watts Bar Unit 2 NSSS Completion Program I&C Projects Post Accident Monitoring System -System Design Specification R4.4.1.5-7

..............

4-31 R4.4.1.5-8

..............

4-31 SDS4.4.1.5-12

........ 4-31 SDS4.4.1.5-13

........ 4-32 SDS4.4.1.5-14

........ 4-32 R4.4.1.5-9

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4-32 SDS4.4.2.1-1

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4-32 SDS4.4.2.

1-2 ..........

4-32 SDS4.4.2.1-3

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4-33 SDS4.4.2.1-4

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4-33 SDS4.4.2.1-5

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4-33 SDS4.4.2.1-6

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4-33 SDS4.4.2.1-7

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4-33 R4.4.2.1-1

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4-33 R4.4.2.1-2

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4-33 R4.4.2.1-3

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4-33 R4.4.2.1-4

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4-33 R4.4.2.2-1

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4-34 SDS4.4.2.2-1

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4-34 R4.4.2.2-2

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4-34 SDS4.4.2.2-2

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4-34 R4.4.2.3-1

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4-34 R4.4.2.3-2

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4-34 SDS4.4.2.3-1

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4-34 SDS4.4.2.3-2

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4-34 R4.4.2.4-1

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4-34 R4.4.2.4-2

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4-34 R4.4.2.4-3

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4-35 R4.4.2.5-1

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4-35 R4.4.2.6-1

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4-35 R4.4.2.6-2

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4-35 R4.4.2.6-3

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4-35 R4.4.2.6-4

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4-35 R4.4.2.6-5

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4-36 R4.4.2.6-6

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4-36 R4.4.2.7-1

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4-36 R4.4.2.7-2

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4-36 R4.4.2.8-1

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4-36 R4.4.2.8-2

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4-36 R4.4.2.9-1

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4-36 R4.4.2.10-1

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4-37 R4.4.2.10-2

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4-37 SDS4.4.2.10-1

........ 4-37 SDS4.4.2.1 1-1 ........ 4-37 R4.4.3-1 .................

4-37 R4.4.3-2 .................

4-37 R4.4.3-3 ..................

4-37 R4.4.3-4 ..................

4-37 R4.4.3-5 ..................

4-38 R4.4.3-6 ..................

4-38 R4.4.3-7 ..................

4-38 R4.4.3-8 ..................

4-38 SDS4.4.3-1

..............

4-38 R4.4.3-9 ..................

4-38 R4.4.3-10

................

4-38 R4.4.3-11

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4-38 R4.4.3-12

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4-38 R4.4.3-13

................

4-38 R4.4.3-14

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4-39 R4.4.3-15

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4-39 R4.4.3-16

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4-39 R4.4.3-17

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4-39 R4.4.3-18

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4-39 R4.4.3-19

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4-39 R4.4.3-20

................

4-39 R4.4.3-21

................

4-39 R4.4.3-22

................

4-39 SDS5.1-1 .................

5-1 R5.1-1 .....................

5-1 SDS5.2-1 .................

5-1 SDS5.2-2 .................

5-1 SDS5.2-3 .................

5-1 R5.2-1 .....................

5-3 R5.2-2 .....................

5-3 R5.2-3 .....................

5-3 R5.2-4 .....................

5-3 R5.2-5 .....................

5-4 R6.1-1 .....................

6-1 R6.1-2 .....................

6-1 R6.1-3 .....................

6-1 R6.1-4 .....................

6-1 R6.2-1 .....................

6-1 R6.2-2 .....................

6-2 SDS6.3-1 .................

6-2 (Last Page of Front Matter)WNA-DS-01667-WBT-NP, Rev. 5 xii Westinghouse Non-Proprietary Class 3 Nuclear Automation Post Accident Monitoring System -Watts Bar Unit 2 NSSS Completion Program I&C Projects System Design Specification SECTION 1 INTRODUCTION

1.1 PURPOSE

The purpose of this document is to define the hardware design requirements and provide a high-level hardware description for the Watts Bar Unit 2 Post Accident Monitoring System (PAMS).The hardware design requirements are necessary for the PAMS implementation specified in WNA-DS-01617-WBT, "Post Accident Monitoring System -System Requirements Specification" (Reference 1).1.2 SCOPE This document defines the physical hardware configuration necessary to implement the requirements provided in Reference

1.1.3 FORMAT

OF THE DOCUMENT 1.3.1 Requirement Compliance When showing compliance to a higher tiered requirement, the specified document and requirement number are presented in ( ) following the associated design specification text. The following references are used through this document: (SysRS R#### -##) or (SysRS Section ###) is Reference 1, WNA-DS-01617-WBT-P, Rev. 4, "Watts Bar Unit 2 Post Accident Monitoring System -System Requirements Specification," Westinghouse Electric Company LLC.(FPD R#### -##) or (FPD Section###)

is Reference 2, 00000-ICE-30155, Rev. 9, "System Requirements Specification for the Common Q Generic Flat Panel Display," Westinghouse Electric Company LLC.(PS Section###)

is Reference 3, 00000-ICE-30159, Rev. 02, "Hardware Requirements Specification for the Common Q Power Supply System," Westinghouse Electric Company LLC.1.3.2 Requirements Specification Format System requirements are specified throughout this document and are presented in the following format to clearly distinguish them from other text.R### -##[Requirement text.]Guidance:

Guidance text.WNA-DS-01667-WBT-NP, Rev. 5 1-1 Westinghouse Non-Proprietary Class 3 Nuclear Automation Watts Bar Unit 2 NSSS Completion Program I&C Projects Post Accident Monitoring System -System Design Specification Rationale:

Rationale text.Each requirement is uniquely numbered, although the numbers may not necessarily be in order. It is the intent that, in future revisions of this document, requirements retain their original number. New requirements are assigned a new, unique number.Some requirements are new design requirements originating in this document and hence do not need requirement traceability.

Other requirements that may need traceability are referenced in the following format.(Reference XR###) or (Reference X Section ###)1.3.3 Design Statement Format Design statements are specified throughout this document and are presented in the following format to clearly distinguish them from other text.SDS### -##[Design statement text (Requirement ID or Section).]

Guidance:

Guidance text.Rationale:

Rationale text.Each design statement is uniquely numbered, although the numbers may not necessarily be in order. It is the intent that, in future revisions of this document, design statements retain their original number. New design statements are assigned a new, unique number.All the design statements are traced to their requirement statements in the following format.(SysRS R#### -##), (SysRS Section ###), (FPD R#### -##), (FPD Section###), (PS Section###)(Reference XR###) or (Reference X Section ###)(Last Page of Section 1)WNA-DS-01667-WBT-NP, Rev. 5 1-2 Westinghouse Non-Proprietary Class 3 Nuclear Automation Post Accident Monitoring System -Watts Bar Unit 2 NSSS Completion Program I&C Projects System Design Specification SECTION 2 PAMS ARCHITECTURE DESCRIPTION 2.1 PAMS OVERVIEW The Watts Bar Unit 2 PAMS consists of two separate Class 1E trains that are built on an AdvantController 160 (AC 160) platform.

Each train of PAMS has a flat panel display (FPD) for its operator's module (OM) and maintenance and test panel (MTP).The system requirements specification for the FPD is provided in 00000-ICE-30155, Rev. 9, "System Requirements Specification for the Common Q Generic Flat Panel Display," Westinghouse Electric Company LLC. (Reference 2).Each train is mounted in a dedicated cabinet, with identical hardware.

Therefore, the following discussion addresses the hardware requirements of a single PAMS train. Any differences in the hardware configuration for Train A and Train B will be described explicitly.

2.2 PAMS ARCHITECTURE SDS2.2-1[The major subsystems included in each train of the Watts Bar Unit 2 PAMS are as follows (SysRS R3.1.2-2), (SysRS R3.1.3-1), (SysRS R3.3.2-1), (SysRS 3.3.2-2): 1. AC160 rack- Two per train 2. MTP -One per train 3. OM -One per train]Guidance:

Figure 2. 1-1, "PAMS Architecture," shows the basic architecture of the Watts Bar Unit 2 PAMS. The train A of Watts Bar Unit 2 PAMS is electrically independent and physically isolated from the train B, so as to meet the separation requirement of regulatory guide 1.75, "physical independence of electrical systems" (Reference

5) and IEEE 384-1992, "standard criteria for independence of class 1E equipment and circuits" (Reference 6).WNA-DS-01667-WBT-NP, Rev. 5 2-1 Westinghouse Non-Proprietary Class 3 Nuclear Automation Watts Bar Unit 2 NSSS Completion Program I&C Projects Figure 2.1-1. 1 Post Accident Monitoring System -System Design Specification ac I a.(Last Page of Section 2)WNA-DS-01667-WBT-NP, Rev. 5 2-2 Westinghouse Non-Proprietary Class 3 Nuclear Automation Post Accident Monitoring System -Watts Bar Unit 2 NSSS Completion Program I&C Projects System Design Specification SECTION 3 PAMS FUNCTIONALITY 3.1 PAMS FUNCTIONALITY OVERVIEW SDS3.1-1[The PAMS performs post accident monitoring functions such as reactor vessel level monitoring, subcooled margin monitoring, and core exit thermocouple (CET) monitoring. (SysRS R2.3. 1-1)]3.2 MTP FUNCTIONALITY SDS3.2-1[The MTP, located in each PAMS train, provides the human machine interface (HMI) that is used for maintenance, test, and internal alarm functions. (SysRS R2.6.1-4), (SysRS R2.8-1)]Guidance:

The MTP provides displays in support of the following activities: " Surveillance testing displays to verify PAMS operability

Maintenance displays to support corrective maintenance activities" Setpoint displays to provide the capability to monitor, change, load, and save setpoints (adjustable parameters)

System status displays to provide detailed PAMS status and diagnostics information" System health displays to provide diagnostic monitoring information for the AC 160 processor module, communication interface module, input modules, and output modules* Operational displays to monitor PAMS operational status 3.3 OM FUNCTIONALITY SDS3.3-1 a,c L Guidance:

The OM is equipped with the FE keyswitch but not the SLE keyswitch.(Last Page of Section 3)WNA-DS-01667-WBT-NP, Rev. 5 3-1 Westinghouse Non-Proprietarv Class 3 Nuclear Automation Post Accident Monitoring System -Watts Bar Unit 2 NSSS Completion Program I&C Projects System Design Specification SECTION 4 PAMS HARDWARE CONFIGURATION 4.1 PAMS HARDWARE CONFIGURATION OVERVIEW The Watts Bar Unit 2 PAMS cabinet includes the following hardware as shown in Figure 4.1-1.WNA-DS-01667-WBT-NP, Rev. 5 4-1 Westinghouse Non-Proprietary Class 3 WNA-DS-01667-WBT-NP, Rev. 5 4-1 Westinghouse Non-Proprietary Class 3 Nuclear Automation Watts Bar Unit 2 NSSS Completion Program I&C Projects Post Accident Monitoring System -System Design Specification a,c Figure 4.1-1. [Ia~c WNA-DS-01667-WBT-NP, Rev. 5 4-2 Westinghouse Non-Proprietary Class 3 Nuclear Automation Post Accident Monitoring System -Watts Bar Unit 2 NSSS Completion Program I&C Projects System Design Specification 4.2 PAMS CABINET The PAMS cabinet should have the following features.4.2.1 Cabinet Layout SDS4.2.1-1

[The Watts Bar Unit 2 PAMS is housed in a standard Westinghouse cabinet that is seismically qualified.(Reference 10, G04)]Guidance:

The overall dimension of the Watts Bar Unit 2 PAMS cabinet is 87"h X 28"w X 29"d. The height of the cabinet includes a 4 inch base. A basic layout of the Watts Bar Unit 2 PAMS cabinet is depicted in Figure 4.2-1.SDS4.2.1-2

[The Watts Bar Unit 2 PAMS cabinet is designed to accommodate top cable entry. (SysRS R3.1.1-6)]

SDS4.2.1-3 a,c I I SDS4.2.1-4 a,c E ]SDS4.2.1-5 a,c SDS4.2.1-6 a,c WNA-TJS-01667-WBT-NP, Rev. 5 4-3 Westinghouse Non-Proprietary Class 3 WNA-DS-01667-WBT-NP, Rev. 5 4-3 Westinghouse Non-Proprietary Class 3 Nuclear Automation Watts Bar Unit 2 NSSS Completion Program I&C Projects Post Accident Monitoring System -System Design Specification Figure 4.2-1. J Ia,C WNA-DS-01667-WBT-NP, Rev. 5 4-4 Westinghouse Non-Proprietary Class 3 V^A-DS-01667-WBT-NP, Rev. 5 4-4 Westinghouse Non-Proprietary Class 3 Nuclear Automation Watts Bar Unit 2 NSSS Completion Program I&C Projects 4.2.1.1 Common Q Power Supply Layout R4.2.1.1-1 SDS4.2.1.1-1 I SDS4.2.1.1-2 I SDS4.2.1.1-3 I SDS4.2.1.1-4 t SDS4.2.1.1-5 4.2.1.2 RF616 Primary Subrack Layout R4.2.1.2-1 I Post Accident Monitoring System -System Design Specification ac I R4.2.1.2-2 I R4.2.1 .2-3 I a,c I WNA-DS-01667-WBT-NP, Rev. 5 4-5 Westinghouse Non-Proprietary Class 3 Nuclear Automation Watts Bar Unit 2 NSSS Completion Program I&C Projects L Post Accident Monitoring System -System Design Specification a,c I R4.2.1.2-4 R4.2.1.2-5 SDS4.2.1.2-1 I a,c I a,c a,c I SDS4.2.1.2-2 a,c WNA-DS-01667-WBT-NP, Rev. 5 4-6 Westinghouse Non-Proprietary Class 3 Nuclear Automation Watts Bar Unit 2 NSSS Completion Program I&C Projects Post Accident Monitoring System -System Design Specification a,c WNA-DS-01667-WBT-NP, Rev. 5 4-7 Westinghouse Non-Proprietary Class 3 Nuclear Automation Watts Bar Unit 2 NSSS Completion Program I&C Projects Post Accident Monitoring System -System Design Specification ac Figure 4.2-2. [I8,C WNA-DS-01667-WBT-NP, Rev. 5 4-8 Westinghouse Non-Proprietary Class 3 Nuclear Automation Watts Bar Unit 2 NSSS Completion Program I&C Projects 4.2.1.3 MTP Layout SDS4.2.1.3-1 I SDS4.2.1.3-2 I R4.2.1.3-1 SDS4.2.1.3-3 R4.2.1.3-2 I R4.2.1.3-3 S4.2.1.3-4 R4.2.1.3-5 I R4.2.1.3-6 Post Accident Monitoring System -System Design Specification ac a.c WNA-DS-01667-WBT-NP, Rev. 5 4-9 Westinghouse Non-Proprietary Class 3 Nuclear Automation Watts Bar Unit 2 NSSS Completion Program I&C Projects 4.2.1.4 RF620 Extension Subrack Layout R4.2.1.4-1 E R4.2.1.4-2 E R4.2.1.4-3 F Post Accident Monitoring System -System Design Specification I ac a,__c R4.2.1.4-4 I R4.2.1.4-5 R4.2.1.4-6 E acq ac I WNA-DS-01667-WBT-NP, Rev. 5 4-10 Westinghouse Non-Proprietary Class 3 Nuclear Automation Watts Bar Unit 2 NSSS Completion Program I&C Projects Post Accident Monitoring System -System Design Specification

4.2.2 Cabinet

Numbering R4.2.2-1[As per TVA requirement, the two cabinets for Train A and Train B shall be numbered 2-R-179 and 2-R-180 respectively with temporary labels.]Guidance:

Affix temporary labels to both the front and back doors of both cabinets.

Install labels in the same location as to where the final cabinet labels will be installed.

4.3 MTP/OM CONFIGURATION SDS4.3-1 I R4.3-1 4.3.1 Keylock Switches SDS4.3.1-1 I SDS4.3.1-2 SDS4.3.1-3 I R4.3.1-1 I ac a,c I axc WNA-DS-01667-WBT-NP, Rev. 5 4-11 Westinghouse Non-Proprietary Class 3 WNA-DS-01667-WBT-NP, Rev. 5 4-11 Westinghouse Non-Proprietary Class 3 Nuclear Automation Watts Bar Unit 2 NSSS Completion Program I&C Projects Post Accident Monitoring System -System Design Specification R4.3.1-2 R4.3.1-3 I a,c WNA-DS-01667-WBT-NP, Rev. 5 4-12 Westinghouse Non-Proprietary Class 3 V^A-DS-01667-WBT-NP, Rev. 5 4-12 Westinghouse Non-Proprietary Class 3 Nuclear Automation Post Accident Monitoring System -Watts Bar Unit 2 NSSS Completion Program I&C Projects System Design Specification

4.4 HARDWARE

DESCRIPTION R4.4-1 a,c E The Common Qualified Platform (Common Q) line of qualified hardware is used to implement the Watts Bar Unit 2 PAMS subsystems, cabinets, cablings, and other related equipment.

As appropriate, additional detailed hardware design requirement documents are provided for individual hardware components.

4.4.1 Common

Q Qualified Hardware The following standard Common Q hardware is used for the Watts Bar Unit 2 PAMS:* Cabinet* AC 160 Modules 0 I/O Termination Units 0 FPD System* Power Supply System 4.4.1.1 Cabinet R4.4.1.1-1 a,c E ]SDS4.4.1.1-1 R4.4.1.1-2 a,c L ]4.4.1.2 AC160 Modules SDS4.4.1.2-1 SDS4.4.1.2-2 a.c WNA-DS-01667-WBT-NP, Rev. 5 4-13 Westinghouse Non-Proprietary Class 3 V^A-DS-01667-WBT-NP, Rev. 5 4-13 Westinghouse Non-Proprietary Class 3 Nuclear Automation Watts Bar Unit 2 NSSS Completion Program I&C Projects Post Accident Monitoring System -System Design Specification K a,c]SDS4.4.1.2-3 a SDS4.4.1.2-4 R4.4.1.2-1 I Table 4.4-1.1 I a,C a, c t 4 4 4-t I 4 4 I I I I t I VvrNA-DS-01667-WBT-NP, Rev. 5 4-14 Westinghouse Non-Proprietary Class 3 Nuclear Automation Watts Bar Unit 2 NSSS Completion Program I&C Projects Post Accident Monitoring System -System Design Specification Table 4.4-1.[] c a, c+ 4 SDS4.4.1.2-5 R4.4.1.2-2 LI R4.4.1.2-3 F ac WNA-DS-01667-WBT-NP, Rev. 5 4-15 Westinghouse Non-Proprietary Class 3 WNA-DS-01667-WBT-NP, Rev. 5 4-15 Westinghouse Non-Proprietary Class 3 Nuclear Automation Waits Bar Unit 2 NSSS Completion Program I&C Projects Post Accident Monitoring System -System Design Specification Table 4.4-2. 1 jac axc WNA-DS-01667-WBT-NP, Rev. 5 4-16 Westinghouse Non-Proprietary Class 3 Nuclear Automation Watts Bar Unit 2 NSSS Completion Program I&C Projects Post Accident Monitoring System -System Design Specification Table 4.4-3. [a, c ac MrNA-DS-01667-WBT-NP, Rev. 5 4-17 Westinghouse Non-Proprietary Class 3 Nuclear Automation Watts Bar Unit 2 NSSS Completion Program I&C Projects Post Accident Monitoring System -System Design Specification SDS4.4.1.2-6 1R4.4.1.2-4 I R4.4.1.2-5 I SDS4.4.1.2-7 E_SDS4.4.1.2-8 ac a c I WNA-DS-01667-WBT-NP, Rev. 5 4-18 Westinghouse Non-Proprietary Class 3 Nuclear Automation Watts Bar Unit 2 NSSS Completion Program I&C Projects Post Accident Monitoring System -System Design Specification Table 4.4-4. [a.c t 1- 4 4 + 4 4 + 4 t $4 + I Table 4.4-5. [] a,c a,c WNA-DS-01667-WBT-NP, Rev. 5 4-19 Westinghouse Non-Proprietary Class 3 WNA-DS-01667-WBT-NP, Rev. 5 4-19 Westinghouse Non-Proprietary Class 3 Nuclear Automation Watts Bar Unit 2 NSSS Completion Program I&C Projects Post Accident Monitoring System -System Design Specification SDS4.4.1.2-9 R4.4.1.2-6 Table 4.4-6. [a,c a.c WNA-DS-01667-WBT-NP, Rev. 5 4-20 Westinghouse Non-Proprietary Class 3 V*'NA-DS-01667-WBT-NP, Rev. 5 4-20 Westinghouse Non-Proprietary Class 3 Nuclear Automation Watts Bar Unit 2 NSSS Completion Program I&C Projects Post Accident Monitoring System -System Design Specification Table 4.4-6. [Ia,c axc WNA-DS-01667-WBT-NP, Rev. 5 4-21 Westinghouse Non-Proprietary Class 3 VirNA-DS-01667-WBT-NP, Rev. 5 4-21 Westinghouse Non-Proprietary Class 3 Nuclear Automation Watts Bar Unit 2 NSSS Completion Program I&C Projects Post Accident Monitoring System -System Design Specification SDS4.4.1.2-10 R4.4.1.2-7 ac Table 4.4-7A. [Ia,c a,c 4 4 -&4 4 4 4 I 4 4 4 4 4 4 4 4 4 4 4 4 t 4 4 4 4 4 4 4 +4 4 .4.4 4 4 WNA-DS-01667-WBT-NP, Rev. 5 4-22 Westinghouse Non-Proprietary Class 3 WNA-DS-01667-WBT-NP, Rev. 5 4-22 Westinghouse Non-Proprietary Class 3 Nuclear Automation Post Accident Monitoring System -Watts Bar Unit 2 NSSS Completion Program I&C Projects System Design Specification Table 4.4-7B. [ a,C a,c 1 4 1 I 4 I I I I 4 I 1 1 I 4 1 I I I. 4 I-t I I I 4 I I 4 I WNA-DS-01667-WBT-NP, Rev. 5 4-23 Westinghouse Non-Proprietary Class 3 WNA-DS-01667-WBT-NP, Rev. 5 4-23 Westinghouse Non-Proprietary Class 3 Nuclear Automation Watts Bar Unit 2 NSSS Completion Program I&C Projects Post Accident Monitoring System -System Design Specification R4.4.1.2-8 Table 4.4-8A. [a,c a,c WNA-DS-01667-WBT-NP, Rev. 5 4-24 Westinghouse Non-Proprietary Class 3 V,/NA-DS-01667-WBT-NP, Rev. 5 4-24 Westinghouse Non-Proprietary Class 3 Nuclear Automation Post Accident Monitoring System -Watts Bar Unit 2 NSSS Completion Program I&C Projects System Design Specification Table 4.4-8B. a,c a,c 4 1- 4 1 1- 4 1 1- *4 4. 4 4 4- 4 4 4. 4 1 1- 4 4 4- 4 4 4. 4 4 1 t 4 I *4 .1 4 WNA-DS-01667-WBT-NP, Rev. 5 4-25 Westinghouse Non-Proprietary Class 3 WNA-DS-01667-WBT-NP, Rev. 5 4-25 Westinghouse Non-Proprietary Class 3 Nuclear Automation Post Accident Monitoring System -Watts Bar Unit 2 NSSS Completion Program I&C Projects System Design Specification R4.4.1.2-9 Table 4.4-9A. l a,c a,c 4 I 4 4 4 4 4 4 4 4

4 4 4 .4.*t. t 4+ 4 4 4 4 4+ 4 .1.WNA-DS-01667-WBT-NP, Rev. 5 4-26 Westinghouse Non-Proprietary Class 3 WNA-DS-01667-WBT-NP, Rev. 5 4-26 Westinghouse Non-Proprietary Class 3 Nuclear Automation Post Accident Monitoring System -Watts Bar Unit 2 NSSS Completion Program I&C Projects System Design Specification Table 4.4-9B. [ ]aI a,c 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 -1+ 4 4 4 4 4 WNA-DS-01667-WBT-NP, Rev. 5 4-27 Westinghouse Non-Proprietary Class 3 WNA-DS-01667-WBT-NP, Rev. 5 4-27 Westinghouse Non-Proprietary Class 3 Nuclear Automation Watts Bar Unit 2 NSSS Completion Program I&C Projects Post Accident Monitoring System -System Desian Specification R4.4.1.2-10 Table 4.4-10A. [Ia,c a,c WNA-DS-01667-WBT-NP, Rev. 5 4-28 Westinghouse Non-Proprietary Class 3 Nuclear Automation Watts Bar Unit 2 NSSS Completion Program I&C Projects Post Accident Monitoring System -System Design Specification Table 4.4-10B. ]a,c a, 4 1- 4 1 1- 4 4 4- 4 4 4. 4 4 + 4 4 + 4 4 .9- 4.1. £4.4.1.3 1/0 Termination Units R4.4.1.3-1 a-c WNA-DS-01667-WBT-NP, Rev. 5 4-29 Westinghouse Non-Proprietary Class 3 WNA-DS-01667-WBT-NP, Rev. 5 4-29 Westinghouse Non-Proprietary Class 3 Nuclear Automation Watts Bar Unit 2 NSSS Completion Program I&C Projects 4.4.1.4 FPD System SDS4.4.1.4-1 I Post Accident Monitoring System -System Design Specification 4.4.1.5 Power Supply System R4.4.1.5-1 I SDS4.4.1.5-1 I SDR4.4.1.5-2 R4.4.1.5-2 I SDS4.4.1.5-3 a,c a,c R4.4.1.5-3 E R4.4.1.5-4 E R4.4.1.5-5 I WNA-DS-01667-WBT-NP, Rev. 5 a,c]axc asc Westinghouse Non-Proprietary Class 3 4-30 Nuclear Automation Watts Bar Unit 2 NSSS Completion Program I&C Projects Post Accident Monitoring System -System Design Specification R4.4.1.5-6 I I R4.4.1.5-7 R4.4.1.5-8 E a,c a c Figure 4.4-1. [a,c SDS4.4.1.5-12 j WNA-DS-01667-WBT-NP, Rev. 5 4-31 Westinghouse Non-Proprietary Class 3 WNA-DS-01667-WBT-NP, Rev. 5 4-31 Westinghouse Non-Proprietary Class 3 Nuclear Automation Post Accident Monitoring System -Watts Bar Unit 2 NSSS Completion Program I&C Projects System Design Specification a,c SDS4.4.1.5-13 a SDS4.4.1.5-14 a,c I I R4.4.1.5-9 ac 4.4.2 PAMS Standard Hardware Subassemblies 4.4.2.1 Interposing Relay Panel (IRP)SDS4.4.2.1-1 a,c E I SDS4.4.2.1-2 a,c E ]WNA-DS-01667-WBT-NP, Rev. 5 4-32 Westinghouse Non-Proprietary Class 3 WNA-DS-01667-WBT-NP, Rev. 5 4-32 Westinghouse Non-Proprietary Class 3 Nuclear Automation Watts Bar Unit 2 NSSS Completion Program I&C Projects SDS4.4.2.1-3 Post Accident Monitoring System -System Design Specification a,c SDS4.4.2.1-4 SDS4.4.2.1-5 S4.4.2.1-6 rSDS4.4.2.1-7 5R4.4.2.1-1 R4.4.2.1-2 E R4.4.2.1-3 E R4.4.2.1-4 ac a,c]a,c I a,c WNA-DS-01667-WBT-NP, Rev. 5 4-33 Westinghouse Non-Proprietary Class 3 Nuclear Automation Post Accident Monitoring System -Watts Bar Unit 2 NSSS Completion Program I&C Projects System Design Specification 4.4.2.2 Cabinet Temperature Sensors R4.4.2.2-1 a,c E ]SDS4.4.2.2-1 ac L I R4.4.2.2-2 a,c E ]SDS4.4.2.2-2 4.4.2.3 Field Terminal Blocks R4.4.2.3-1 a,c E 7 R4.4.2.3-2 a,c I ]SDS4.4.2.3-1 II SDS4.4.2.3-2 1 ac 4.4.2.4 Input Power Distribution Breaker Panel (AC)R4.4.2.4-1 I4 -R4.4.2.4-2 II WNA-DS-01667-WBT-NP, Rev. 5 4-34 Westinghouse Non-Proprietary Class 3 WNA-DS-01667-WBT-NP, Rev. 5 4-34 Westinghouse Non-Proprietary Class 3 Nuclear Automation Watts Bar Unit 2 NSSS Completion Program I&C Projects Post Accident Monitoring System -System Design Specification R4.4.2.4-3 a,c 4.4.2.5 DC Distribution Breaker Assembly R4.4.2.5-1 4.4.2.6 Auxiliary Power Supply R4.4.2.6-1 I R4.4.2.6-2 E R4.4.2.6-3 R4.4.2.6-4 E a,c a,c I a,c a,c I WNA-DS-01667-WBT-NP, Rev. 5 4-35 Westinghouse Non-Proprietary Class 3 WNA-DS-01667-WBT-NP, Rev. 5 4-35 Westinghouse Non-Proprietary Class 3 Nuclear Automation Watts Bar Unit 2 NSSS Completion Program I&C Projects Post Accident Monitoring System -System Design Specification R4.4.2.6-5 E R4.4.2.6-6 I 4.4.2.7 Primary Subrack -USA and USB Feeds R4.4.2.7-1 R4.4.2.7-2 4.4.2.8 Extension Subrack -USA and USB Feeds R4.4.2.8-1 R4.4.2.8-2 4.4.2.9 DP Cell Power Supplies R4.4.2.9-1 I a,c I a,c a,c I a,c a,c WNA-DS-01667-WBT-NP, Rev. 5 4-36 Westinghouse Non-Proprietary Class 3 Nuclear Automation Watts Bar Unit 2 NSSS Completion Program I&C Projects Post Accident Monitoring System -System Design Specification 4.4.2.10 TC514 Fiber Optic Modems R4.4.2.10-1 EI R4.4.2.10-2 E a,c]a,c I SDS4.4.2.10-1 4.4.2.11 Cabinet Door Switches SDS4.4.2.11-1

4.4.3 Cabling

R4.4.3-1 R4.4.3-2 E R4.4.3-3 E R4.4.3-4 E a,c axc a,c ac a,c]a,c I WNA-DS-01667-WBT-NP, Rev. 5 4-37 Westinghouse Non-Proprietary Class 3 WNA-DS-01667-WBT-NP, Rev. 5 4-37 Westinghouse Non-Proprietary Class 3 Nuclear Automation Watts Bar Unit 2 NSSS Completion Program I&C Projects R4.4.3-5 I R4.4.3-6 I R4.4.3-7 I R4.4.3-8 I SDS4.4.3-1 I R4.4.3-9 I R4.4.3-10 I R4.4.3-11I E R4.4.3-1 2 I R4.4.3-1 3 Post Accident Monitoring System -System Design Specification axc ac I ac a c ax WNA-DS-01667-WBT-NP, Rev. 5 4-38 Westinghouse Non-Proprietary Class 3 WNA-DS-01667-WBT-NP, Rev. 5 4-38 Westinghouse Non-Proprietary Class 3 Nuclear Automation Watts Bar Unit 2 NSSS Completion Program I&C Projects Post Accident Monitoring System -System Design Specification R4.4.3-14 E R4.4.3-15 E a c a c R4.4.3-16 I R4.4.3-17 R4.4.3-18 L_R4.4.3-19 E a,c I axc 1 a.c axc I R4.4.3-20 I R4.4.3-21 I R4.4.3-22 I a,c]WNA-DS-01667-WBT-NP, Rev. 5 4-39 Westinghouse Non-Proprietary Class 3 V*rNA-DS-01667-WBT-NP, Rev. 5 4-39 Westinghouse Non-Proprietary Class 3 Nuclear Automation Watts Bar Unit 2 NSSS Completion Program I&C Projects Post Accident Monitoring System -System Design Specification SECTION 5 INTERFACES AND COMMUNICATIONS 5.1 MTP DATA LINK SDS5.1-1 R5.1-1 E 5.2 AF100 BUS COMMUNICATION SDS5.2-1 SDS5.2-2 I SDS5.2-3 a,c a c Ii a,c I ac a,c WNA-DS-01667-WBT-NP, Rev. 5 5-' Westinghouse Non-Proprietary Class 3 WNA-DS-01667-WBT-NP, Rev. 5 5-1 Westinghouse Non-Proprietary Class 3 Nuclear Automation Watts Bar Unit 2 NSSS Completion Program I&C Projects Post Accident Monitoring System -System Design Specification I ac I L CE Figure 5.2-1. [a,c V^A-DS-01667-WBT-NP, Rev. 5 5-2 Westinghouse Non-Proprietary Class 3 Nuclear Automation Watts Bar Unit 2 NSSS Completion Program I&C Projects Post Accident Monitoring System -System Design Specification R5.2-1 R5.2-2 R5.2-3 R5.2-4 axc ac axc a,(WNA-DS-01667-WBT-NP, Rev. 5 5-3 Westinghouse Non-Proprietary Class 3 WNA-DS-01667-WBT-NP, Rev. 5 5-3 Westinghouse Non-Proprietary Class 3 Nuclear Automation Watts Bar Unit 2 NSSS Completion Program I&C Projects Post Accident Monitoring System -System Design Specification R5.2-5 I ac I (Last Page of Section 5)WNA-DS-01667-WBT-NP, Rev. 5 5-4 Westinghouse Non-Proprietary Class 3 Nuclear Automation Watts Bar Unit 2 NSSS Completion Program I&C Projects Post Accident Monitoring System -System Design Specification SECTION 6 GROUNDING AND COOLING REQUIREMENTS

6.1 EARTHING

SCHEME R6.1-1 EI a,c]R6.1-2 R6.1-3 E R6.1-4 6.2 CABINET/COMPONENT COOLING R6.2-1 I a,c I a,c WNA-DS-01667-WBT-NP, Rev. 5 6-1 Westinghouse Non-Proprietary Class 3 WNA-DS-01667-WBT-NP, Rev. 5 6-1 Westinghouse Non-Proprietary Class 3 Nuclear Automation Watts Bar Unit 2 NSSS Completion Program I&C Projects Post Accident Monitoring System -System Design Specification R6.2-2 ac 6.3 CABINET LOAD BREAKDOWN SDS6.3-1 K a,(Table 6.3-1. [ a,c a,c L axc (Last Page of Section 6)"A-DS-01667-WBT-NP, Rev. 5 6-2 Westinghouse Non-Proprietary Class 3 Westinghouse Westinghouse Electric Company Nuclear Services 1000 Westinghouse Drive Cranberry Township, Pennsylvania 16066 USA U.S. Nuclear Regulatory Commission Direct tel: (412) 374-4643 Document Control Desk Direct fax: (724) 720-0754 11555 Rockville Pike e-mail: greshaja@westinghouse.com Rockville, MD 20852 Proj letter: WBT-D-3620 CAW-1 1-3301 November 8, 2011 APPLICATION FOR WITHHOLDING PROPRIETARY INFORMATION FROM PUBLIC DISCLOSURE

Subject:

WNA-DS-01667-WBT-P, Rev. 5, "Post Accident Monitoring System -System Design Specification" (Proprietary)

The proprietary information for which withholding is being requested in the above-referenced report is further identified in Affidavit CAW- 11-3301 signed by the owner of the proprietary information, Westinghouse Electric Company LLC. The affidavit, which accompanies this letter, sets forth the basis on which the information may be withheld from public disclosure by the Commission and addresses with specificity the considerations listed in paragraph (b)(4) of 10 CFR Section 2.3 90 of the Commission's regulations.

Accordingly, this letter authorizes the utilization of the accompanying affidavit by Tennessee Valley Authority.

Correspondence with respect to the proprietary aspects of the application for withholding or the Westinghouse affidavit should reference this letter, CAW-1 1-3301, and should be addressed to J. A. Gresham, Manager, Regulatory Compliance, Westinghouse Electric Company LLC, Suite 428, 1000 Westinghouse Drive, Cranberry Township, Pennsylvania 16066.Very truly yo rs, A.uGresham, Manager Regulatory Compliance Enclosures CAW-1 1-3301 AFFIDAVIT COMMONWEALTH OF PENNSYLVANIA:

ss COUNTY OF BUTLER: Before me, the undersigned authority, personally appeared J. A. Gresham, who, being by me duly sworn according to law, deposes and says that he is authorized to execute this Affidavit on behalf of Westinghouse Electric Company LLC (Westinghouse), and that the averments of fact set forth in this Affidavit are true and correct to the best of his knowledge, information, and belief: A. Gresham, Manager Regulatory Compliance Sworn to and subscribed before me this 8th day of November 2011 NoayPublic COMMONWEALTH OF PENNSYLVANIA Notarial Seal Cynthia Olesky, Notary Public Manor Boro, Westmoreland County My Commission Expires July 16, 2014 Meffilam Pfl~nWvania Association of Notaries 2 CAW-] 1-3301 (1) 1 am Manager, Regulatory Compliance, in Nuclear Services, Westinghouse Electric Company LLC (Westinghouse), and as such, I have been specifically delegated the function of reviewing the proprietary information sought to be withheld from public disclosure in connection with nuclear power plant licensing and rule making proceedings, and am authorized to apply for its withholding on behalf of Westinghouse.

(2) 1 am making this Affidavit in conformance with the provisions of 10 CFR Section 2.390 of the Commission's regulations and in conjunction with the Westinghouse Application for Withholding Proprietary Information from Public Disclosure accompanying this Affidavit.

(3) 1 have personal knowledge of the criteria and procedures utilized by Westinghouse in designating information as a trade secret, privileged or as confidential commercial or financial information.

(4) Pursuant to the provisions of paragraph (b)(4) of Section 2.390 of the Commission's regulations, the following is furnished for consideration by the Commission in determining whether the information sought to be withheld from public disclosure should be withheld.(i) The information sought to be withheld from public disclosure is owned and has been held in confidence by Westinghouse.(ii) The information is of a type customarily held in confidence by Westinghouse and not customarily disclosed to the public. Westinghouse has a rational basis for determining the types of information customarily held in confidence by it and, in that connection, utilizes a system to determine when and whether to hold certain types of information in confidence.

The application of that system and the substance of that system constitutes Westinghouse policy and provides the rational basis required.Under that system, information is held in confidence if it falls in one or more of several types, the release of which might result in the loss of an existing or potential competitive advantage, as follows: (a) The information reveals the distinguishing aspects of a process (or component, structure, tool, method, etc.) where prevention of its use by any of 3 CAW-1 1-3301 Westinghouse's competitors without license from Westinghouse constitutes a competitive economic advantage over other companies.(b) It consists of supporting data, including test data, relative to a process (or component, structure, tool, method, etc.), the application of which data secures a competitive economic advantage, e.g., by optimization or improved marketability.(c) Its use by a competitor would reduce his expenditure of resources or improve his competitive position in the design, manufacture, shipment, installation, assurance of quality, or licensing a similar product.(d) It reveals cost or price information, production capacities, budget levels, or commercial strategies of Westinghouse, its customers or suppliers.(e) It reveals aspects of past, present, or future Westinghouse or customer funded development plans and programs of potential commercial value to Westinghouse.(f) It contains patentable ideas, for which patent protection may be desirable.

There are sound policy reasons behind the Westinghouse system which include the following: (a) The use of such information by Westinghouse gives Westinghouse a competitive advantage over its competitors.

It is, therefore, withheld from disclosure to protect the Westinghouse competitive position.(b) It is information that is marketable in many ways. The extent to which such information is available to competitors diminishes the Westinghouse ability to sell products and services involving the use of the information.(c) Use by our competitor would put Westinghouse at a competitive disadvantage by reducing his expenditure of resources at our expense.

4 CAW-11-3301 (d) Each component of proprietary information pertinent to a particular competitive advantage is potentially as valuable as the total competitive advantage.

If competitors acquire components of proprietary information, any one component may be the key to the entire puzzle, thereby depriving Westinghouse of a competitive advantage.(e) Unrestricted disclosure would jeopardize the position of prominence of Westinghouse in the world market, and thereby give a market advantage to the competition of those countries.(f) The Westinghouse capacity to invest corporate assets in research and development depends upon the success in obtaining and maintaining a competitive advantage.(iii) The information is being transmitted to the Commission in confidence and, under the provisions of 10 CFR Section 2.390; it is to be received in confidence by the Commission.(iv) The information sought to be protected is not available in public sources or available information has not been previously employed in the same original manner or method to the best of our knowledge and belief.(v) The proprietary information sought to be withheld in this submittal is that which is appropriately marked in WNA-DS-0 I 667-WBT-P, Rev. 5, "Post Accident Monitoring System -System Design Specification" (Proprietary) for submittal to the Commission, being transmitted by Tennessee Valley Authority letter and Application for Withholding Proprietary Information from Public Disclosure, to the Document Control Desk. The proprietary information as submitted by Westinghouse is that associated with the Post-Accident Monitoring System (PAMS) and may be used only for that purpose.This information is part of that which will enable Westinghouse to: (a) Assist the customer in providing technical licensing information to the NRC that is required for approval of the Watts Bar Nuclear Unit 2 PAMS System.

5 CAW-1 1-3301 Further this information has substantial commercial value as follows: (a) Westinghouse plans to sell the use of similar information to its customers for the purpose of licensing in-core instrumentation systems.(b) Its use by a competitor would improve his competitive position in the development and licensing of a similar product.(c) The information requested to be withheld reveals the distinguishing aspects of a design developed by Westinghouse.

Public disclosure of this proprietary information is likely to cause substantial harm to the competitive position of Westinghouse because it would enhance the ability of competitors to provide similar calculations, analysis and licensing defense services for commercial power reactors without commensurate expenses.

Also, public disclosure of the information would enable others to use the information to meet NRC requirements for licensing documentation without purchasing the right to use the information.

The development of the technology described in part by the information is the result of applying the results of many years of experience in an intensive Westinghouse effort and the expenditure of a considerable sum of money.In order for competitors of Westinghouse to duplicate this information, similar technical programs would have to be performed and a significant manpower effort, having the requisite talent and experience, would have to be expended.Further the deponent sayeth not.

PROPRIETARY INFORMATION NOTICE Transmitted herewith are proprietary and/or non-proprietary versions of documents furnished to the NRC in connection with requests for generic and/or plant-specific review and approval.In order to conform to the requirements of 10 CFR 2.390 of the Commission's regulations concerning the protection of proprietary information so submitted to the NRC, the information which is proprietary in the proprietary versions is contained within brackets, and where the proprietary information has been deleted in the non-proprietary versions, only the brackets remain (the information that was contained within the brackets in the proprietary versions having been deleted).

The justification for claiming the information so designated as proprietary is indicated in both versions by means of lower case letters (a) through (f)located as a superscript immediately following the brackets enclosing each item of information being identified as proprietary or in the margin opposite such information.

These lower case letters refer to the types of information Westinghouse customarily holds in confidence identified in Sections (4)(ii)(a) through (4)(ii)(f) of the affidavit accompanying this transmittal pursuant to 10 CFR 2.390(b)(1).

COPYRIGHT NOTICE The reports transmitted herewith each bear a Westinghouse copyright notice. The NRC is permitted to make the number of copies of the information contained in these reports which are necessary for its internal use in connection with generic and plant-specific reviews and approvals as well as the issuance, denial, amendment, transfer, renewal, modification, suspension, revocation, or violation of a license, permit, order, or regulation subject to the requirements of 10 CFR 2.3 90 regarding restrictions on public disclosure to the extent such information has been identified as proprietary by Westinghouse, copyright protection notwithstanding.

With respect to the non-proprietary versions of these reports, the NRC is permitted to make the number of copies beyond those necessary for its internal use which are necessary in order to have one copy available for public viewing in the appropriate docket files in the public document room in Washington, DC and in local public document rooms as may be required by NRC regulations if the number of copies submitted is insufficient for this purpose. Copies made by the NRC must include the copyright notice in all instances and the proprietary notice if the original was identified as proprietary.

Tennessee Valley Authority Letter for Transmittal to the NRC The following paragraphs should be included in your letter to the NRC: Enclosed are: 1. _ copies of WNA-DS-0 1 667-WBT-P, Rev. 5, "Post Accident Monitoring System -System Design Specification" (Proprietary)

2. _ copies of WNA-DS-01667-WBT-NP, Rev. 5, "Post Accident Monitoring System -System Design Specification" (Non-Proprietary)

Also enclosed is the Westinghouse Application for Withholding Proprietary Information from Public Disclosure CAW-1 1-3301, accompanying Affidavit, Proprietary Information Notice, and Copyright Notice.As Item 1 contains information proprietary to Westinghouse Electric Company LLC, it is supported by an affidavit signed by Westinghouse, the owner of the information.

The affidavit sets forth the basis on which the information may be withheld from public disclosure by the Commission and addresses with specificity the considerations listed in paragraph (b) (4) of Section 2.390 of the Commission's regulations.

Accordingly, it is respectfully requested that the information which is proprietary to Westinghouse be withheld from public disclosure in accordance with 10 CFR Section 2.390 of the Commission's regulations.

Correspondence with respect to the copyright or proprietary aspects of the items listed above or the supporting Westinghouse affidavit should reference CAW- 11-3301 and should be addressed to J. A. Gresham, Manager, Regulatory Compliance, Westinghouse Electric Company LLC, Suite 428, 1000 Westinghouse Drive, Cranberry Township, Pennsylvania 16066.

Attachment 24 Westinghouse Electric Company document CAW-11-3301, Application For Withholding Proprietary Information From Public Disclosure WNA-DS-01667-WBT-P, Rev. 5, "Post Accident Monitoring System -System Design Specification," (proprietary)," dated November 8, 2011 (Letter Item 8)

Westin houseWestinghouse Electric Company Nuclear Services 1000 Westinghouse Drive Cranberry Township, Pennsylvania 16066 USA U.S. Nuclear Regulatory Commission Direct tel: (412) 374-4643 Document Control Desk Direct fax: (724) 720-0754 11555 Rockville Pike e-mail: greshaja@westinghouse.com Rockville, MD 20852 Proj letter WBT-D-3620 CAW-1 1-3301 November 8, 2011 APPLICATION FOR WITHHOLDING PROPRIETARY INFORMATION FROM PUBLIC DISCLOSURE

Subject:

WNA-DS-01667-WBT-P, Rev. 5, "Post Accident Monitoring System -System Design Specification" (Proprietary)

The proprietary information for which withholding is being requested in the above-referenced report is further identified in Affidavit CAW- 11-3301 signed by the owner of the proprietary information, Westinghouse Electric Company LLC. The affidavit, which accompanies this letter, sets forth the basis.on which the information may be withheld from public disclosure by the Commission and addresses with specificity the considerations listed in paragraph (b)(4) of 10 CFR Section 2.390 of the Commission's regulations.

Accordingly, this letter authorizes the utilization of the accompanying affidavit by Tennessee Valley Authority.

Correspondence with respect to the proprietary aspects of the application for withholding or the Westinghouse affidavit should reference this letter, CAW-1 1-3301, and should be addressed to J. A. Gresham, Manager, Regulatory Compliance, Westinghouse Electric Company LLC, Suite 428, 1000 Westinghouse Drive, Cranberry Township, Pennsylvania 16066.Very truly yo rs, A. Gresham, Manager Regulatory Compliance Enclosures CAW-1 1-3301 AFFIDAVIT COMMONWEALTH OF PENNSYLVANIA:

ss COUNTY OF BUTLER: Before me, the undersigned authority, personally appeared J. A. Gresham, who, being by me duly sworn according to law, deposes and says that he is authorized to execute this Affidavit on behalf of Westinghouse Electric Company LLC (Westinghouse), and that the averments of fact set forth in this Affidavit are true and correct to the best of his knowledge, information, and belief: A Gresham, Manager Regulatory Compliance Sworn to and subscribed before me this 8th day of November 2011 Notary Public COMMONWEALTH OF PENNSYLVANIA Notarial Seal Cynthia Olesky, Notary Public Manor Boro, Westmoreland County My Commission Expires July 16, 2014-M fiW, Pfiflivania Assodatlon of Notaries 2 CAW-1 1-3301 (1) I am Manager, Regulatory Compliance, in Nuclear Services, Westinghouse Electric Company LLC (Westinghouse), and as such, I have been specifically delegated the function of reviewing the proprietary information sought to be withheld from public disclosure in connection with nuclear power plant licensing and rule making proceedings, and am authorized to apply for its withholding on behalf of Westinghouse.

(2) I am making this Affidavit in conformance with the provisions of 10 CFR Section 2.390 of the Commission's regulations and in conjunction with the Westinghouse Application for Withholding Proprietary Information from Public Disclosure accompanying this Affidavit.