ML103090750

OL - FW: 20101028 Open Item List and Count

ML103090750
Person / Time
Site:	Watts Bar
Issue date:	10/28/2010
From:	Office of Nuclear Reactor Regulation
To:	Division of Operating Reactor Licensing
References
Download: ML103090750 (113)

Text

WBN2Public Resource From: Poole, Justin Sent: Thursday, October 28, 2010 5:28 PM To: Crouch, William D; Hilmes, Steven A Cc: WBN2HearingFile Resource; Clark, Mark Steven

Subject:

FW: 20101028 Open Item List and Count Attachments: 20101028 Open Item List and Count.docx

Bill, Here is the latest version of the Open Item List. I did not have Masouds email address to send it directly to him.

Justin C. Poole Project Manager NRR/DORL/LPWB U.S. Nuclear Regulatory Commission (301)4152048 email: Justin.Poole@nrc.gov From: Darbali, Samir Sent: Thursday, October 28, 2010 5:12 PM To: Poole, Justin

Subject:

20101028 Open Item List and Count Here is the OI count.

Samir 1

Hearing Identifier: Watts_Bar_2_Operating_LA_Public Email Number: 150 Mail Envelope Properties (19D990B45D535548840D1118C451C74D6FD37245D4)

Subject:

FW: 20101028 Open Item List and Count Sent Date: 10/28/2010 5:27:40 PM Received Date: 10/28/2010 5:27:47 PM From: Poole, Justin Created By: Justin.Poole@nrc.gov Recipients:

"WBN2HearingFile Resource" <WBN2HearingFile.Resource@nrc.gov>

Tracking Status: None "Clark, Mark Steven" <msclark0@tva.gov>

Tracking Status: None "Crouch, William D" <wdcrouch@tva.gov>

Tracking Status: None "Hilmes, Steven A" <sahilmes@tva.gov>

Tracking Status: None Post Office: HQCLSTR02.nrc.gov Files Size Date & Time MESSAGE 459 10/28/2010 5:27:47 PM 20101028 Open Item List and Count.docx 354972 Options Priority: Standard Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date:

Recipients Received:

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date 034. EICB Chapter 7.1 - Introduction 1. Y Close Close N/A N/A 1 (Garg/ Reactor Coolant System Flow Rate Measurement Singh) Design Basis Analysis Parameters Loose Parts Monitoring 034. Chapter 7.2 - Reactor Trip System 2. Y Close Close N/A N/A EICB (Garg) 2 Deletion of Neutron Flux Negative Rate Trip Design Basis Analysis Parameters Alternate Method for Use of Condenser Steam Dump Reactor Coolant System Flow Rate Measurement Foxboro I/A 149 7.2 7.2 FSAR Section 7.1.1.2(2), Overtemperature delta T and Responder: Tindell 3. Y Close Close ML101720589, TVA Letter EICB (Garg)

Overpressure delta T equations have been simplified Item No. 1 dated 10/5/10 and many values are removed from the FSAR. In FSAR amendment 96 the equations were Response provided in letter TVA to provide Provide the justification for this change. revised to agree with the Unit 1 UFSAR which is dated 10/5/10 date when the basis document for the Unit 2 FSAR. This information will be resulted in the equations being simplified and the docketed. TVA removal of the values for the constants. The In FSAR amendment 96, the need to identify equations were revised to match those used in values of the constants have when Unit 1 the Technical Specifications. The values for the been moved to TS or plant UFSAR was constants are contained in the Technical procedures. Need to revised with this Specifications and were removed as redundant. document the basis for this information.

change.

Additional changes were made in FSAR amendments 98 and 99 to correct typographical Response is acceptable.

errors found during FSAR review.

TVA Revised Response:

This change was incorporated in the Unit 1 FSAR in Amendment 0 as part of FSAR change package 1473.

150 7.2 7.2 Many of the changes were based on the Responder: Clark 4. Y Close Close ML101720589, TVA Letter EICB Westinghouse document N3-99-4003. Provide this Response provided in letter Item No. 2 dated 10/5/10 (Garg) document for staffs review so the staff can determine System description N3-99-4003, Reactor dated 10/5/10 the basis for these changes. Protection System is contained in Attachment 3.

151 7.2 7.2 Provide the EDCR 52378 and 54504 which discusses Responder: Clark 5. Y Close Close ML101720589, TVA Letter EICB the basis for many changes to this FSAR section. Item No 3 dated 10/5/10 (Garg) EDCR 54504 has been voided and replaced with Response provided in letter EDCR 52378 which is contained in Attachment 4 dated 10/5/10 and EDCR 52671 is contained in Attachment 5.

152 7.2 7.2 Deleted portion of FSAR section 7.2.3.3.4 and moved Responder: Merten/Clark 6. Y Close Close ML101720589, TVA Letter EICB (Garg) to FSAR section 7.2.1.1.5. However, the FSAR Item No. 4 dated 10/5/10 section 7.2.1.1.5 does not include the discussion of The text was revised to match the Unit 1 UFSAR. Due 10/22/10 ambient temperature and also on the calibration of the The Unit 1 text was modified in Amendment 1 by sealed reference leg system. No justification was FSAR Change Package 1553 S00 which is TVA to confirm if provided for deleting this discussion. Please explain contained in Attachment 30. The basis for the this description is the bases for deletion of this information. change in the change package is: the same as for Unit 1. If it is 16 The update to Section 7.2.1.1.5 is taken from same as Unit 1 text in Section 7.2.2.3.4 with clarifications and then why this was editorial changes. The relocated discussion of the shown as change pressurizer water level instrumentation Is more in redline version appropriately included in this section than Section of FSAR 7.2.2.3.4, which deals with control and protection Amendment 96.

system interaction. The changes to 7.2.1.1.5 are

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date based on a general description of the TVA to provide Westinghouse pressurizer level design, channel date when independence, and actual installation attributes information will be found on TVA physical drawings. Also, the docketed. When hydrogen gas entrainment issue documented in Unit 1 UFSAR NRC Information Bulletin No. 92-54, Level was revised.

Instrumentation Inaccuracies Caused by Rapid Depressurization, is retained and clarified. Similar clarification is made to Reactor Protection System Description N3-9g.4003 Section 3.1.1.2(d). The original text in 7.2.2.3.4 provides some information that is too detailed and is not pertinent to the subject of discussion. It also includes a statement that the error effect on the level measurement during a blowdown accident would be about one inch. The basis for this value is not known; however, the worst case reference leg loss of fill error due to a rapid RCS depressurization event Is no more than 12 inches elevation head. This value is based on the relative elevation difference between the condensing chamber and the reference leg sensor bellows. The Westinghouse Owners Group response to this issue is found in RIMS #

L44930216800. The channel error value discrepancy is documented in WBPER980417.

The remaining text in 7.2.2.3.4 is revised to clarify the control and protection system interaction discussion.

TVA Revised Response:

This change was incorporated in the Unit 1 UFSAR in Amendment 1.

153 7.2 7.2 FSAR section 7.2.1.1.7 added the reference to FSAR Responder: Craig/Webb 7. Y Close Close ML101720589, TVA Letter EICB (Garg) section 10.4.4.3 for exception to P-12. However, Item No. 5 dated 10/21/10 FSAR section 10.4.4.3 states bypass condition is not EDC E50952-A added an alternate method of Response provided in letter Due 10/22/10 Enclosure 1 displayed and it is not automatically removed when RCS cooldown using additional steam dump dated 10/21/10 Item No. 2 conditions for bypass are no longer met. Provide the valves after entering Mode 4, by disabling the P- TVA will send basis for this. 12 Interlock. Operators use additional condenser 50.59.

dump valves to aid in maintaining a cooldown rate closer to the administrative limit established by TVA to provide operating procedure. date when information will be Refer to Unit 1 UFSAR Amendment 3 Change docketed. TVA Package 1676 S00 (Attachment 6) for the safety did not address evaluation and basis for this change. why bypass condition is not The 50.59 for the change is included in the displayed.

Change Package.

The process is controlled by the procedures used to shutdown the plant. The procedure initiates the bypass by lifting a wire at a relay and then ensures that it is restored prior to starting the plant. GO-6 Unit Shutdown From Hot Standby To Cold Shutdown, Appendix F prescribes the steps required to bypass and restore the P-12 interlock.

GO-6 Appendix F, step 3.0[6] says PLACE

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date Caution Order on 1-HS-1-103A, 1-HS-1-103B, AND 1-PIC-1-33 indicating that P-12 interlock is disabled. This provides indication to the operators that the P-12 interlock is bypassed.

GO-6 Appendix F, step 4.0[1] says WHEN steam dumps no longer affect plant cooldown OR plant heatup is desired, THEN ENSURE MIG re-enables P-12 Interlock USING Section 6.0 of this Appendix, LANDING LEADS TO RE-ENABLE P-12 INTERLOCK. GO-6 Appendix F, step 4.0[2]

states REMOVE Caution Order on 1-HS-1-103A, 1-HS-1-103B, AND 1-PIC-1-33 indicating that P-12 interlock is disabled.

157 7.2 7.2 FSAR section 7.2.2.1.1, fifth paragraph was deleted Responder: Tindell 8. Y Close Close ML101720589, TVA Letter EICB (Garg) except for the last sentence. The last sentence states Item No. 9 dated 10/5/10 that, The P-8 interlock acts essentially as a high The condition is defined in the preceding Response provided in letter nuclear power reactor trip when operating in this discussion as operating with a reactor coolant dated 10/5/10 condition. This sentence is confusing because the pump out of service and core power less than condition is not defined. Please clarify this 25%. Response Acceptable discrepancy.

159 7.2 7.2 FSAR section 7.2.2.1.2 discusses reactor coolant flow Responder: Craig 9. Y Close close ML101720589, TVA Letter EICB (Garg) measurement by elbow taps. However, it further Item No. 11 dated 10/5/10 states that for Unit 2, precision calorimetric flow For the purposes of measuring reactor coolant Response provided in letter Due 10/31 measurement methodology will be used. If elbow taps flow for Reactor Protection functions, elbow taps dated 10/5/10 are not used for Unit 2, then why does this section are used for both Unit 1 and 2. The discussion discuss this methodology? It is the staffs and equation are valid for establishing the Response Acceptable understanding that TVA plans to use elbow taps nominal full power flow which is used to establish methodology in the future for Unit 2. Please revise this the Reactor Protection System low flow trip section to describe the current plant setpoint. However the method used to verify design/methodology. reactor coolant flow, as required by the Technical Specifications, is not the same. Unit 1 uses a simplified methodology based on elbow tap P measurements correlated with precision calorimetric data over several cycles of operation as described in Reference 17, WCAP-16067, Rev 0, RCS Flow Measurement Using Elbow Tap Methodology at Watts Bar Unit 1. The plan is for Unit 2 to transition to this method after sufficient data is obtained. Pending this transaction, 7.2.2.1.2 will be revised as follows:

From:

Nominal full power flow is established at the geginning of each fuel cycle by either elbow tap methodology or, performance of the RCS calorimetric flow measurement, (For Unit 1 elbow tap methodology is implemented for RCS flow measurement (Reference [17]) and Unit 2 may implement elbow tap methodology at a future date) the results of which are used to normalize the RCS flow indicators. This provides a reference point for the low flow reactor trip setpoint, and also provides a relatively simple method for periodic verification of the thermal design flow assumed in the safety analysis, as required by the Technical Specifications.

Accuracy and repeatability of the flow measurement instrumentation are considered in

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date establishment of the low flow setpoint and the minimum required flow and are adequate for these functions. This is for Unit 1 only. For Unit 2, the precision calorimetric flow measurement methodology will be used.

To:

Nominal full power flow is established at the beginning of each fuel cycle by either elbow tap methodology or, performance of the RCS calorimetric flow measurement. Unit 1 utilizes elbow tap methodology Reference [17]. Unit 2 utilizes the RCS calorimetric flow measurement.

The results are used to normalize the RCS flow indicators and provide a reference point for the low flow reactor trip setpoint.

160 7.2 7.2 FSAR section 7.2.2.2(7) deleted text which has Responder: Tindell 10. Close Close ML101720589, TVA Letter EICB (Garg) references 12 and 14. These references are not Item No. 12 dated 10/5/10 included in the revised text. Provide the basis for the The text was revised to match the Unit 1 UFSAR. Response provided in letter 10/21 deletion of these references. Also, the revised text The Unit 1 text was modified in Amendment 1 by dated 10/5/10 states that typically this requirement is satisfied by FSAR Change Package 1553 S00 which is utilizing 2/4 logic for the trip function or by providing a contained in Attachment 30. The basis for the diverse trip. Provide any exception to this and their change in the change package is:

basis for acceptability.

23. (page 7.2-24): Portions of the discussion of control and protection system interaction are revised to clarify the requirement. The discussion of how the SG low-low water level protective function and the control system Median Signal Selector satisfy this requirement is deleted since it Is redundant to the information provided In Section 7.2.2.3.5. Reactor Protection System Description N3-99-4003 is also revised to move and clarify the discussion of the requirements for control and protection system Interaction from Section 3.1.1.2 to Section 2.2.11, where the Issue is also discussed.

167 7.2 7.2 FSAR section 7.2.2.4, provide an analysis or reference Responder: Clark 11. Close close ML101720589, TVA Letter EICB (Garg) to chapter 15 analysis which demonstrate that failure Item No. 19 dated 10/5/10 of rod stop during a rod withdrawal event will not affect Continuous rod withdrawal events are analyzed in Response provided in letter the safety limit. FSAR sections 15.2.1 and 15.2.2. While the rod dated 10/5/10 stops a mentioned, they are not credited in the analysis.

168 7.2 7.2 FSAR table 7.2-4, item 9 deleted loss of offsite power Responder: Clark 12. Close Close ML101720589, TVA Letter EICB (Garg) to station auxiliaries (station blackout) based on the Response provided in letter Item No. 20 dated 10/5/10 fact that station blackout is not listed in AAPC events. This change is in accordance with the Unit 1 dated 10/5/10 Explain what are AAPC events and how it justifies UFSAR. The change was made by FSAR deleting this accident from the list. Change Package 1553 S00 (Attachment 30).

The justification for the change is:

38 (Table 7.2-4): This table lists the reactor trips and the various accident analyses for which each trip could provide protection. The intent of the table is to demonstrate the diversity of and comprehensive protection provided by the reactor trip system against various postulated events and to correlate the trip functions with the analyses in which they may be utilized, either as a primary or

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date secondary protective function. Chapter 15, along with the Accident Analysis Parameters Checklist, WB-OC-40-70, provides the accident analysis discussion and identifies the protection system functions which provide accident mitigation. The additions and deletions to the table are made for consistency with the safety analyses of record as reflected in the design and licensing basis and do not represent analysis changes or protection system changes. Therefore. they are considered to be non-significant as discussed at the beginning of this section. Neutron Monitoring System Description N3-85-4003 Table 2 is also revised for consistency with WB-DC-40-70.

217 7/6/2010 Responder: Clark 13. Close Close EICB RAI TVA Letter EICB (Garg)

ML102910008 dated 7/30/10 Provide copies excerpts of the EDCRs and DCNs that Attachment 7 contains excerpts of the following Item#55 provide the block and logic diagrams for the Foxboro change documents:

Spec 200 implementation.

DCN 52376 Note: These changes are scheduled to be implemented after Unit 2 Fuel Load DCN 52641 NOTE: DCN 52376 and 52641 impact loops already in service for Unit 1 and as such are implemented under 10CFR50.59.

EDCR 52343 EDCR 52427 222 8/4/2010 Responder: Clark 14. Close Close EICB RAI TVA Letter EICB ML102910008 dated 10/5/10 (Garg) Submit updated list for Foxboro Spec 200 The updated listing of Foxboro Spec 200 loop Response provided in letter Item#24

[replacement of Bailey and Robert-Shaw electronics functions is contained in Attachment 33. dated 10/5/10 225 8/4/2010 Responder: Scansen 15. Close Close EICB RAI TVA Letter EICB (Garg)

ML102910008 dated 10/5/10 Provide EDCR Technical Evaluation Justify/explain The requested information is contained in the Response provided in letter Item#25 updated hardware [functionally equivalent to Unit 1] for Scope and Intent, Unit Difference and Technical dated 10/5/10 the RCP and Turbine Generator vibration monitoring Evaluations for EDCRs 52420 (Attachment 11) equipment. and 53559 (Attachment 12) 227 8/4/2010 Responder: Clark 16. Close Close EICB RAI TVA Letter EICB (Garg)

ML102910008 dated 10/5/10 Provide copies of 50.59s for the following Unit 1 A. CERPI, initial installation DCN 51072 and Response provided in letter Item#26 changes 2009 upgrade DCN 52957 (Attachment dated 10/5/10 Upgrade of RCP, TG and FW pumps

a. CERPI (initial installation and 2009 upgrade) vibration monitoring to Bentley-Nevada 3300,

b. Vibration monitoring (RCP, TG and FW pumps to DCN 39242, DCN 39506, DCN 39548, and Bentley-Nevada 3300) DCN 50750 (Attachment )

c. Containment Sump Level Transmitter replacement B. Containment Sump Level Transmitter

d. Turbine Servo Control Valve Card replacement replacement, DCN 39608 (Attachment )

e. Pressurizer Heater deletion of Backup Heaters on C. Turbine Servo Control Valve Card for PZR High Level replacement, DCN 38993 (Attachment )

f. AMSAC D. Pressurizer Heater deletion of Backup

g. Significant ESFAS changes Heaters on for PZR High Level, DCN 51102 (Attachment )

E. AMSAC DCN 50475 (Attachment )

F. Significant ESFAS changes

i. Relocate containment isolation valve

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date function and relocate the 6.9KV Shutdown Boards Emergency Feeder Breaker Trip function from K626 and K602, respectively, to minimize disruption on plant operation. DCN 38238 (Attachment )

ii. Revise OTT and OPT turbine runback setpoints, DCN 38842 (Attachment )

iii. Install Integrated Computer System (ICS) Stages 4 and 5, DCN 50301 (Attachment )

236 8/4/2010 Responder: Clark 17. Close Close EICB RAI TVA Letter EICB (Garg)

ML102910008 dated 10/5/10 Submit EDCR Technical Evaluation for Foxboro Spec Foxboro Spec 200 EDCRs 52343, 52427 and Response provided in letter Item#28 200 EDCRs 52641, Scope and Intent, Unit Difference and dated 10/5/10 Technical Evaluations are contained in Attachment 26 to 10/5 letter.

240 8/4/2010 Responder: Clark 18. Close Close Ml102910008 TVA Letter EICB (Garg)

Item#29 dated 10/5/10 Submit EDCR Technical Evaluation for Vibration The Scope and Intent, Unit Difference and Response provided in letter Monitoring EDCR(s) Technical Evaluations for EDCRs 53559 and dated 10/5/10 52420 are contained in Attachment 28 of 10/5 letter.

242 8/4/2010 Responder: Hilmes 19. Close Close EICB RAI TVA Letter EICB (Garg)

ML102910008 dated 10/5/10 TVA to make firm decision on date of transfer (before The Unit 2 loops in service for Unit that are Response provided in letter Item#30 or after initial startup) of Unit 2 loops in service for Unit scheduled to be transferred to the Foxboro Spec dated 10/5/10 1 to new Foxboro Spec 200 hardware 200 hardware will be transferred prior to Unit 2 fuel load.

276 7.6 7.6 8/27/2010 Responder: Webb 20. Close Close EICB RAI TVA Letter EICB (Garg)

ML102910008 dated 10/21/10 In order for the staff to review the effects of multi The NRC reviewer confirmed this question Response provided in letter Item#60 Enclosure 1 control systems failure, provide the summary of the applies to non-safety systems. dated 10/21/10 TVA to Docket in Item No. 13 analyses documenting the effect on the plant based on 10/20 letter the following events: (1) loss of power to all control (1) The DCS segmentation analysis systems powered by a single power supply; (2) failure addressed the power supply arrangement TVA to provide of each instrument sensor which provides signal to two for the NSSS/BOP control systems justification for or more control systems; (3) Break of any sensor implemented with Foxboro I/A. non-safety system impulse line which is used for sensors providing (2) Signals shared by more than one control other than DCS.

signals to two or more control systems; and (4) failure system are addressed in the DCS of digital system based on the common cause software segmentation analysis. The statement failure affecting two or more control systems. For (3) Where feasible, the unit 2 design includes that failure of each of these events, confirm that the consequences separate sense lines for redundant sense line where of these events will not be outside chapter 15 analyses transmitters, eliminating a single point of more than one or beyond the capability of operators or safety failure which is present in unit 1. In those transmitter is systems. applications where separate sense lines connected would are not practicable, failure of a single be bounded by sense line would be bounded by the failure the failure of a of a single transmitter and would have the single transmitter same effect as for unit 1. does not make (4) Limiting DCS failures were addressed in sense.

the segmentation analysis, supplemented

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date by Fault Handling in the I/A Series System, Revision 1, submitted on TVA letter to NRC dated October 5, 2010, Attachment 42.

278 7.6 7.6.6 8/27/2010 Responder: Trelease 21. Close Close EICB RAI TVA Letter EICB (Garg)

ML102910008 dated 10/21/10 For FSAR Section 7.6.6, provide the justification for UFSAR section 7.6.6 does not identify control Response provided in letter TVA to Docket in Item#62 Enclosure 1 adding valves FCV 63-8 and FCV 63-11, which require valves FCV-63-8 and -11 as part of a list of valves dated 10/21/10 10/20 letter Item No. 14 that power to be removed and will be administratively that are required to have their motive power controlled prior to use of RHR system for plant removed during specific operating modes. The cooldown. Provide the P & ID and block diagram Unit 1 General operating instructions GO-1 and showing the operation of these valves. GO-6 (which will be used as a guideline for unit 2) provide administrative instructions to remove power and restore power to these valves in mode

3. Also, U1 Emergency operating procedures (e.g ES-1.3) do not address the restoration of power to the valves as part of post LOCA Mitigation activities.

Attachment 8 contains the control and logic diagrams, along with the applicable design changes to verify that the control schemes are similar to unit 1.

279 7.6 7.6.6 8/27/2010 Responder: Mather 22. Close Close EICB RAI TVA Letter EICB (Garg)

ML102910008 dated 10/21/10 For FSAR Section 7.6.6, provide the justification for The FSAR change to include the valves as Response provided in letter TVA to docket in Item#63 Enclosure 1 the exception to install protective covers which exceptions to the use of protective covers was dated 10/21/10 10/20 letter Item No. 15 operator has to remove before he can have access to made to match Unit 1 UFSAR change Pkg. No.

control switch to operate two additional valves FCV62- 1547 Safety Assessment Item 8. The change 98 and FCV62-99. package identified FCV-62-98 and 99 as exceptions to the use of protective covers. This change was based on WBPER980417 which removed the power from the valves and had them locked open. TVA will incorporate the same changes in Unit 2 as Unit 1. The Unit 1 changes are described in References 3 and 4.

280 7.6 7.6.6 8/27/2010 Responder: Trelease 23. Close Close EICB RAI TVA Letter EICB (Garg)

ML102910008 dated 10/21/10 For FSAR Section 7.6.6, provide the justification for Historical DCN 38661 removes the requirement Response is acceptable. Item#64 Enclosure 1 the acceptability of removing FCV 63-5 from the list of that power be removed from FCV-63-5 during TVA to issue by Item No. 16 valves which has operating instructions specifying the normal operations, and notes that the valve does Response provided in letter 10/20 removal of power during specific modes of plant not have a shunt breaker to allow MCR position dated 10/21/10 operation. indication with power removed. The Unit 2 system description has been updated to reflect the Unit 1 change to the system description, and the update of section 7.6.6 to remove the requirement of FCV-63-5 from the list of valves which has operating instructions specifying the removal of power during normal operations. This is supported by the failure modes and effects analysis for the safety injection system calculation EMP-SNM-043029 (which has been revised to be applicable to Unit 2), as well as the Unit 2 FSAR Table 6.3-8 both which state that spurious closure of FCV-63-5 is not credible. Spurious closure of FCV-63-5 is not credible because the MCR hand switch is provided with a protective cover to prevent operator error. In addition, the hand

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date switch is wired with contacts on both sides of the motor contactor to prevent a single failure within the switch gear from spuriously closing the valve.

These features eliminate the need to remove power from FCV-63-5.

Attachment 10 contains the documentation associated with this response.

282 7.6 7.6.9 8/27/2010 Responder: Trelease 24. Close Close EICB RAI TVA Letter EICB (Garg)

Response is acceptable ML102910008 dated 10/21/10 For FSAR Section 7.6.9 which discusses the switch The re-write for section 7.6.9 was to provide a TVA to issue by Item#66 Enclosure 1 over from injection to recirculation, and is a ESF more concise description of the instrumentation Response provided in letter 10/20 Item No. 17 system, the compliance with IEEE 279 has been and controls. The section was too wordy, and dated 10/21/10 removed from the FSAR. Justify this deletion. several topics were duplicated in section 7.3.

Wording is now more closely aligned to system description.

Compliance with IEEE 279 is not intended to be removed, merely the reference to the standard in that particular section. A statement is added that The automatic switchover of the RHR pumps from the injection to the recirculation Mode is part of the Engineered Safety Features Actuation System (ESFAS) discussed in chapter 7.3.

Chapter 7.3 includes a reference to IEEE Standard 279-1979. The reference in 7.6.9 was therefore considered unnecessary, and therefore removed.

Attachment 9 contains FSAR excerpts required to support this response.

312 7.0 By letter dated September 10,2010, TVA provided the Responder: Stockton 25. Close Close EICB RAI TVA Letter summary evaluation of 50.59 reports which were ML102910008 dated 10/21/10 EICB (Garg) related to FSAR Chapter 7.0. However, these Amendment 8 is the current version of Unit 1 Response provided in letter Due 10/31/10 Item#75 Enclosure 1 evaluation only covers Amendments 0 thru 8. Provide UFSAR. dated 10/21/10 Item No. 23 all other evaluation which have been done since these amendments and which forms the basis for FSAR Chapter 7.0 systems.

315 7.5.3 7.5.3 IE Bulletin 79-27 required that emergency operating Responder: S. Smith (TVA Operations) 26. Close Close EICB RAI TVA Letter procedures to be used by control room operators to ML102910008 dated 10/21/10 attain safe shutdown upon loss of any Class IE or non While the WBN Unit 2 Emergency Operating Response provided in letter Due 10/31/10 Item#76 Enclosure 1 EICB (Garg)

Class IE bus are adequate. WBN1 has performed the Procedures (EOPs) have not been written, they dated 10/21/10 Item No. 25 review and documented their conclusion. Confirm that will be written the same as the Unit 1 EOPs.

WBN2 emergency procedures are adequate to WBN Unit 1 personnel will perform validations to achieve safe shutdown in the event of loss of any ensure that WBN Unit 2 EOPs will perform the Class IE or non-Class IE bus. required actions. The WBN Unit 2 EOPs will be written and validated prior to Unit 2 fuel load.

001 All All The Watts Bar Nuclear Plant FSAR red-line for Unit 2 12/15/2009 Presentation Slides 27. Closed Closed EICB RAI 3/12/2010 NNC 11/19/09: The FSAR EICB (All)

(Agency wide Documents Access and Management ML093230343, contains mostly description of System Accession Number ML080770366) lists This item was partially addressed during the Date: 3/15/2010 Item No. 1 the function that the various TVA changes to the Unit 1 FSAR and depicts how Chapter December 15, 2009 meeting. systems must perform.

7 of the Unit 2 FSAR will appear at fuel load. Have RAI response received. Therefore this question was additional changes been made to Chapter 7 of the Unit TVA Letter Dated March 12, 2010 (Enclosure 1, asked to determine how the 2 FSAR beyond those indicated in ML080770366? Item No. 1 on Page 1 of 15): TVA responded to systems have been changed.

Which of the changes identified correspond to digital this request for additional Information.

instrumentation and controls (I&C) components and NNC 4/15/10: The response systems that have not been previously reviewed and addresses many systems and

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date approved by the NRC? should be read by all EICB reviewers.

002 All All Are there I&C components and systems that have 12/15/2009 Presentation Slides 28. Closed Closed EICB RAI 3/12/2010 NNC 11/19/09: The FSAR EICB (All) changed to a new or different digital technology ML093230343, contains mostly description of without the change being reflected in the FSAR This item was partially addressed during the Date: 3/15/2010 Item No. 2 the function that the various TVA markup? Are there any not-redlined I&C components December 15, 2009 meeting. systems must perform.

and systems that have been changed or replaced by TVA Letter Dated March 12, 2010 (Enclosure 1, RAI response received. Therefore this question was digital base technology since Unit 1 was approved? Item No. 2 on Page 2 of 15): TVA responded to asked to determine how the this request for additional Information. systems have been changed.

NNC 4/15/10: The response addresses many systems and should be read by all EICB reviewers.

003 All All Because a digital I&C platform can be configured and 12/15/2009 Presentation Slides 29. Closed Closed EICB RAI 3/12/2010 NNC 11/19/09: The FSAR EICB (All) programmed for different applications, the review ML093230343, contains mostly description of process can be divided between a review of the This item was partially addressed during the Date: 3/15/2010 Item No. 3 the function that the various TVA platform and a review of the application. For planning December 15, 2009 meeting. systems must perform.

and scheduling reasons, it is important to know TVA Letter Dated March 12, 2010 (Enclosure 1, RAI response received. Therefore this question was beforehand which platform has been used in each Item No. 3 on Page 2 of 15): TVA responded to asked to determine how the digital component and system. What is the base this request for additional Information. systems have been changed.

platform of each unreviewed digital I&C component and system (e.g., Common Q)? NNC 4/15/10: The response addresses many systems and should be read by all EICB reviewers.

004 All All Please identify the information that will be submitted Responder: Webb 1/13/10 Public Meeting 30. Closed Closed EICB RAI January 13, NNC 11/19/09: LIC-110 Rev. 1 EICB (All) for each unreviewed digital I&C system and ML093230343, 2010 Section 6.2.2 states: "Design component and the associated docketing schedule. TVA identified a schedule for docketing some Date: 3/15/2010 TVA to docket a Item No. 4 features and administrative Post Accident Monitoring System (PAMS) Responsibility: NRC (All) and D3 analysis for March 12, programs that are unique to Unit documentation, and the new setpoint TVA (Hilmes) the Common Q 2010 2 should then be reviewed in methodology. No other documentation was PAMS. accordance with current staff discussed. TVA to address the question June 30, 2010 positions.TVA will supply a of how a Foxboro IA common NNC 8/19/10: description of the changes Add: By letter dated June 30, 2010, TVA mode or complete failure TVA August 11, implemented at Unit 1 but have docketed WNA-LI-00058-WBT-P &-NP, "PAMS impacts the plant accident segmentation 2010 not been reviewed for Unit 2 by Licensing Technical Report." WNA-LI-00058- analysis as described in analysis has been the NRC technical staff...TVA will WBT-P Section 4.11 addressed CCF and BTP 7- Chapter 15 of the FSAR. received - NRC to TVA Letter also provide the applicable

19. (Demonstrate segments are review. dated 10/5/10 portion of the FSAR and the independent and how a proposed TSs...In addition, the TVA Letter Dated March 12, 2010 (Enclosure 1, common mode or complete staff should review items that are Item No. 4 on Page 3 of 15): TVA responded to failure is prevented by power identical for WBN Units 1 and 2 this request for additional Information supply design and that have not previously been segmentation.) reviewed and approved by the Foxboro I/A Segmentation Analysis Calculation NRC staff. These items are DCSSEGMENT, Rev. 0 submitted on TVA letter NNC 8/19/10: The justification changes in the design and dated August 11, 2010. for not performing and D3 licensing basis for WBN Unit 1 analysis contained in the CQ that TVA has implemented PAMS Licensing Technical without NRC prior approval Data Storm Testing Report is not acceptable. TVA under the 10 CFR 50.59 to docket a D3 analysis for the process."

(a) Foxboro I/A Segmentation Analysis, CQ PAMS. This will be NNC 4/15/10: The response Calculation DCSSEGMENT, Rev. 0 submitted responded to in Item 64. addresses many systems and on TVA letter to the NRC dated August 11, should be read by all EICB 2010 (Reference). NNC 8/25/10: The reviewers.

segmentation analysis has (b) Attachment 36 to letter dated 10/5/10 been read. Please explain contains Foxboro proprietary drawings why it is believed that failure

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date 08F802403-SC-2001 sheets 1 through 6. An will not propagate over the affidavit for withholding and non-proprietary peer-to-peer network.

versions of the drawings will be submitted no later than January 31, 2011. Looking for an architectural description of the network (c) Credible Mesh Network Failure Modes interconnections similar to the ICS overview, identification of Attachment 42 to letter dated 10/5/10 credible failure modes caused contains the mesh network failure analysis. by the mesh network and what component(s) prevent mesh (d) Refer to the response to item (c) above. network failures from disabling the entire system. What prevents a segment failure from propagating across the mesh network and affecting other segments.

005 7.1.3. By letter date February 28, 2008 (Agencywide Responder: Craig/Webb 31. Closed Closed EICB RAI TVA Letter EICB (Garg) 1 Documents Access and Management System ML093431118, dated 2/5/10 (ADAMS) Accession Number ML080770366) TVA TVA Letter Dated February 5, 2010: TVA Date: 3/15/2010 FSAR AMD 100 Item No. 5 provided a "red-lined" version of the FSAR for WBN provided the Unit 2 setpoint methodology (WCAP- Responsibility: NRC (Garg) TVA Letter Unit 2. The purpose of this FSAR "red-line" version 177044-P Revision 0 - dated December). and TVA (Hilmes and Crouch) dated3/12/10 was to depict how the Unit 2 FSAR will appear at fuel load. This letter identified significant FSAR changes TVA Letter Dated March 12, 2010 (Enclosure 1, RAI response received. This and provided a X-REF number for each. Item No. 5 on Page 5 of 15): TVA responded to item is closed as this is this request for additional Information covered under item 154 later Change 7.3-1 refers to the following two Summary on.

Reports: This item is addressed as follows:

This item requires further TVA Letter, P. L. Pace to NRC, dated February.9, 1. FSAR Amendment 100 which was submitted discussion between TVA and 1998, "Watts Bar Nuclear Plant (WBN) Unit 1 - 10 CFR on TVA letter to the NRC dated August __, 2010 the staff concerning the 50.59(b)(2), Changes, Tests and Experiments incorporates as-found and as-left setpoint setpoint methodology Summary Report tolerance discussion into section 7.1.2.1.9, adds employed for WBN2.

EEB-TI-28, Setpoint Methodology to the section TVA Letter, P. L. Pace to NRC, dated September 30, 7.1 references and adds a reference to 7.1.2.1.9 See Item 8.

2005, "Watts Bar Nuclear Plant (WBN) Unit 1 - 10 CFR to section 7.2.1.1.10.

50.59, Changes, Tests and Experiments Summary Report" TSTF-493, Rev. 4 Option A has been incorporated into the Unit 2 Tech Spec submittal Please submit the 50.59 Evaluations for each of these dated February 2, 2010.

Summary Reports and identify which parts are relevant to the Unit 2 Setpoint Methodology.

006 Amendment 95 of the FSAR, Chapter 7.3, shows that By letter dated February 5, 2010: TVA provided 32. Closed Closed EICB RAI TVA Letter NNC: WCAP-12096 Rev. 7 EICB (Garg) change 7.3-1 consists of updating a reference from the Unit 2 setpoint methodology (WCAP-177044- ML093431118, dated 2/5/10 (ML073460281) is in ADAMS.

revision 5 to revision 7 and making it applicable to Unit P Revision 0 - dated December 2009). This item is reviewed in FSAR Item No. 6 1 only, while adding a new reference, applicable only amendment 100 review. TVA to reference TVA Letter NNC: WCAP-12096 Rev. 8 is to Unit 2. TVA Letter Dated March 12, 2010 (Enclosure 1, TI-28 for as found dated 3/12/10 the current revision for Unit 1.

Item No. 6 on Page 7 of 15): TVA responded to Date: 2/16/2010 and as left value.

Reagan, J. R., "Westinghouse Setpoint Methodology this request for additional Information. Also provide the TVA Letter TVA to docket Rev. 8 and for Protection Systems, Watts Bar Units 1 and 2, Eagle The Westinghouse Setpoint reference to dated 7/30/10 identify that Rev. 8 is the current 21 Version," WCAP-12096 Rev. 7, (Westinghouse a. TVA to docket Rev. 8 and identify that Rev. 8 is methodology document FSAR Section 7.1 revision for Unit 1. TVA to Proprietary Class 2). Unit 1 Only the current revision for Unit 1. TVA to identify any (WCAP-17044-P Revision 0) for the setpoint identify any NRC approval of NRC approval of Rev. 8. identifies that the intermediate methodology. Rev. 8.

WCAP Westinghouse Setpoint Methodology for and source range calculations Protection System, Watts Bar Unit 2, Eagle 21 In accordance with item 2, below, there is no were performed by TVA (2- This is addressed TVA to describe how TVA Version, WCAP-17044-P. Unit 2 Only. change to the methodology, therefore revision 8 NMD-092-0131). Please in FSAR calculations for Unit 2 are is not included in this response. provide the intermediate and Amendment 100. different than Unit 1. If they are Please provide both setpoint methodology documents source range calculations the same, TVA to docket such identified above. Westinghouse letter WAT-D-10502 (Attachment performed by TVA (2-NMD- statement under oath and

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date

1) describes the two changes to WCAP-12096 092-0131). Affirmation.

Revision. 8. The first change addresses the containment sump level transmitter replacement. The Westinghouse Setpoint This change was submitted under 50.59 summary methodology document report (ML073460444, Page 77). The second (WCAP-17044-P Revision 0) change is to delete the power range negative flux identifies that the undervoltage rate trip. This item was submitted as a Technical and underfrequency Specification change (ML073201052). The calculations were performed Technical Specification change was subsequently by TVA (2-27-068-0031).

approved. Please provide the undervoltage and The current revision of Unit 1 WCAP-12096 is underfrequency calculations Revision 9. Revision 9 was issued to make the performed by TVA (2-27-068-changes required by the Steam Generator 0031).

Replacement Project. Unit 2 is using the original steam generators, therefore the changes in Work with Item 7 for WCAP-Revision 9 are not applicable to Unit 2. 12906 issues.

b. TVA to describe how TVA calculations for Unit 2 are different than Unit 1. If they are the same, TVA to docket such statement under oath and Affirmation.

TVA response letter dated March 12, 2010, Enclosure 1, Item Number. 7 addressed this request; however, the March 12 letter was not submitted under oath and affirmation. This letter fulfills the oath and affirmation requirements for the previous response.

007 7.1.3. The setpoint methodology has been reviewed and TVA Letter Dated March 12, 2010 (Enclosure 1, 33. Closed Closed EICB RAI TVA Letter TVA to provide Rev. 8 of the Unit EICB (Garg) 1 approved by the NRC staff in Section 7.1.3.1 of Item No. 7 on Page 7 of 15): TVA responded to This item is reviewed in FSAR ML093431118, dated 3/12/10 1 document (which is the current NUREG-0847 (ML072060490), NUREG-0847 this request for additional Information. 100 review. Item No. 7 one) if there is a change in Supplement No.4 (ML072060524), and NUREG-0847 Same as Item 6 TVA Letter methodology and identify how Supplement No. 15 (ML072060488). a. TVA will submit WCAP-12096, Rev. 8 if there is Date: 1/13/2010 above dated 7/30/10 the Unit 2 document differs from a change to the methodology. it.

Please describe all changes from the methodology that RAI response received. NRC This is addressed has been reviewed and approved by the staff. No change in methodology, therefore WCAP- to review response. in FSAR 12906, Revision 8 is not submitted. Amendment 100.

TVA will submit WCAP-12096,

b. TVA will supply the 50.59 letter for Rev. 8 Rev. 8 if there is a change to the methodology.

Westinghouse letter WAT-D-10502 (Attachment

1) describes the two changes to WCAP-12096 TVA will supply the 50.59 Revision. 8. The first change addresses the letter for Rev. 8 containment sump level transmitter replacement.

This change was submitted under 50.59 summary TVA to locate transmittal letter report (ML073460444, Page 77). The second that submitted Rev. 7.

change is to delete the power range negative flux rate trip. This item was submitted and approved TVA to determine the last as a Technical Specification change revision of WCAP-12096 (ML073201052). where there was a change in methodology.

c. TVA to locate transmittal letter that submitted Rev. 7. Work with Item 6 for WCAP-12906 issues.

Refer to response to Item 1. TVA responded to this request for additional Information in letter dated March 12, 2010, Enclosure 1, Item Number 6.

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date

d. TVA to determine the last revision of WCAP-12096 where there was a change in methodology.

Previous revisions to WCAP-12096 have been due to hardware changes. The calculation methodology has not changed since revision 0.

008 7.3 There are several staff positions that provide guidance TVA Letter Dated March 12, 2010 (Enclosure 1, 34. Closed Closed EICB RAI TVA Letter EICB (Garg) on setpoint methodology (e.g., Reg Guide 1.105, BTP Item No. 8 on Page 7 of 15): TVA responded to ML093431118, dated 3/12/10 7-12, RIS-2006-17 and TSTF-493 Rev. 4). Please this request for additional Information FSAR AMD 100. Item No. 8 identify how the Unit 2 setpoint methodology Closed as it will addresses staff guidance. This item is addressed as follows: be covered under item 154

1. FSAR Amendment 100 which was submitted on TVA letter to the NRC dated August __, 2010 incorporates as-found and as-left setpoint tolerance discussion into section 7.1.2.1.9, adds EEB-TI-28, Setpoint Methodology to the section 7.1 references and adds a reference to 7.1.2.1.9 to section 7.2.1.1.10.

2. TSTF-493, Rev. 4 Option A has been incorporated into the Unit 2 Tech Spec submittal dated February 2, 2010.

009 7.3.2 5.6, Change 7.3-2, identified in Watts Bar Nuclear Plant TVA Letter Dated March 12, 2010 (Enclosure 1, 35. Closed Closed EICB RAI 3/12/10, EICB (Darbali) 6.3.5 FSAR red-line for Unit 2 (ADAMS Accession Number Item No. 9 on Page 8 of 15): TVA responded to ML093431118, ML101680598, ML080770366), refers to the following Summary this request for additional Information Date: 3/15/2010 Item No. 9 Item 9 Report: TVA Letter, P. L. Pace to NRC, dated Responsibility: NRC (Darbali)

September 20, 2002, "Watts Bar Nuclear Plant (WBN)

Unit 1 - 10 CFR 50.59, Changes, Tests and 50.59 evaluation was Experiments Summary Report" submitted in the RAI response.

Please provide the 50.59 Evaluation summarized in this Summary Report.

010 7.3 7.3 The original SER on Watts Bar (NUREG-0847) TVA Letter Dated March 12, 2010 (Enclosure 1, 36. Closed Closed EICB RAI 3/12/10, EICB (Darbali) documents that the scope of the review of FSAR Item No. 10 on Page 8 of 15): TVA responded to ML093431118, ML101680598, Section 7.3, Engineered Safety Features Actuations this request for additional Information. Replaced by OI Item No. 10 Item 10 System, included: included single-line, function logic 314 and schematic diagrams, and descriptive information TVA Letter (ML073550386) dated FEB 26 1992:

for the ESFAS and those auxiliary supporting systems docketed WCAP-12374 Rev. 1 (ML080500664).

that are essential to the operation of either the ESFAS or the ESF systems. The review included the applicant's design criteria and design bases for the ESFAS and the instrumentation and controls of auxiliary supporting systems. The review also included the applicant's analyses of the manner in which the design of the ESFAS and the auxiliary supporting systems conform to the design criteria."

Please provide the information referred to in the quotation and include a description of all changes since this information was reviewed and approved by the NRC staff.

If some parts of this information is included in the FSAR (e.g., Design Criteria) this information can be explicitly referenced in the response to this question.

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date 011 7.3.2 5.6, NUREG-0847 Supplement No. 2 Section 7.3.2 TVA Letter Dated March 12, 2010 (Enclosure 1, 37. Closed Closed EICB RAI ML101680598, EICB (Darbali) 6.3.5 includes an evaluation of a change in containment Item No. 11 on Page 13 of 15): TVA responded ML093431118, Item 9 sump level measurement. Provide information to to this request for additional Information Date: 3/15/2010 Item No. 11 demonstrate that Unit 2 implements the containment Responsibility: NRC (Darbali) sump level indication as described and evaluated in NUREG-0847 Supplement No. 2, Section 7.3.2, for Requested information was Unit 1. submitted in the RAI response.

012 7.4 7.4 The original SER on Watts Bar (NUREG-0847) TVA Letter Dated March 12, 2010 (Enclosure 1, 38. Closed Closed EICB RAI TVA Letter EICB (Darbali) documents that the scope of the review of FSAR Item No. 12 on Page 13 of 15): TVA responded ML093431118, dated 3/12/10 Section 7.4, "Systems Required for Safe Shutdown," to this request for additional Information Date: 3/15/2010 Item No. 6 included single-line and schematic diagrams: "The TVA Letter scope of the review of the systems required for safe A revised response was included in the 7/30 letter TVA provided the following: dated 7/30/10 shutdown included the single-line and schematic that provides the requested information.

diagrams and the descriptive information for these 1. Description of what is ML101680598, systems and for the auxiliary systems essential for different from Unit 1 Item 9 their operation."

2. Road map between Please provide the single-line and schematic diagrams functions listed in 7.4 and the for the systems required for safe shutdown that are FSAR section that describes applicable to Unit 2, and include a description of all the equipment that performs changes since these diagrams were reviewed and the function. Item Closed.

approved by the NRC staff.

013 7.1.3. Chapter 7 and Chapter 16 of Amendment 95 to the TVA Letter Dated March 12, 2010 (Enclosure 1, 39. Closed Closed EICB RAI TVA Letter TS have been docketed.

EICB (Garg) 1 FSAR do not include any setpoint values. Please Item No. 13 on Page 14 of 15): TVA responded ML093431118, dated 3/12/10 describe how and when setpoint values (e.g., TS to this request for additional Information Date: 3/15/2010 This item is closed Item No. 13 allowable values) will be provided for Unit 2. for chapter 7.

RAI response received. NRC will review Please describe the information that will be provided to Westinghouse is completing T.S. under justify the acceptability of these values. the setpoint calculations which different chapter.

will be completed by May 11, 2011. NRC to review response.

014 All All Provide the justification for any hardware and software Date: 4/27/10 40. Closed Closed NRC Meeting TVA Letter EICB (All) changes that have been made since the previous U.S. Responder: TVA Summary dated 4/27/10 Nuclear Regulatory Commission (NRC) staff review for NNC: I do not recall saying ML093560019, Eagle 21 and other platforms By letter dated April 27, 2010: TVA responded to that the NRC is not interested Item No. 1 this request for information (Enclosure, Item No. in changes in other platforms.

1) stated: "In discussion with the staff, TVA's Please provide a description understanding is that the focus of this question is of changes to other platforms the Eagle 21 system. Please refer to Reference 2 (e.g., SSPS).

[TVA Letter Dated March 12, 2010], Question 10, and TVA letter to NRC dated August 25, 2008, For Eagle 21, this response

'Watts Bar Nuclear Plant (WBN) - Unit 2 - points to Open Item No. 10.

Westinghouse Eagle 21 Process Protection System, Response to NRC I&C Branch request Response understood.

for additional information' (Reference 3 [TVA Additional material will be letter dated August 25, 2008]) for the discussion requested separately to of changes to the Eagle 21 system." understand the systems described.

A listing of changes to other platforms was provided in TVA letter dated April 27, 2010, Enclosure 1, items 21 and 23.

015 Verify that the refurbishment of the power range Date: 4/27/10 41. Closed Closed NRC Meeting TVA Letter EICB nuclear instrumentation drawers resulted in only like- Responder: TVA Summary dated 4/27/10 (Garg) for-like replacements. Date: 4/27/10 ML093560019, By letter dated April 27, 2010 TVA responded to Responsibility: NRC (Garg) Item No. 2 this request for information (Enclosure, Item No.

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date 2). Response acceptable. Close 016 Identify the precedents in license amendment requests Date: 4/27/10 42. Closed Closed NRC Meeting TVA Letter EICB (Carte)

(LARs), if any, for source range monitors or Responder: TVA Summary dated 4/27/10 intermediate range monitors. Date: 4/27/10 ML093560019, By letter dated April 27, 2010 TVA responded to Responsibility: NRC (Garg) Item No. 3 this request for information (Enclosure, Item No.

3). Acceptable. Close 017 7.3.1 7.3.1, Identify precedents in LARs, if any, for the solid state Date: 4/27/10 43. Closed Closed NRC Meeting TVA Letter 5.5.5, EICB protection system. Also, identify any hardware Summary dated 4/27/10 5.6 deviation from the precedent. By letter dated April 27, 2010 TVA responded to ML093560019, (Darbali) this request for information (Enclosure, Item No. Item No. 4 ML101230248, 4). Item 4 018 Identify any changes made to any instrumentation and Date: 4/27/10 44. Closed Closed NRC Meeting TVA Letter EICB (Garg) control (I&C) system based on prior knowledge of Responder: TVA Summary dated 4/27/10 failures. Date: 4/27/10 ML093560019, By letter dated April 27, 2010 TVA responded to Responsibility: NRC (Garg) Item No. 5 this request for information (Enclosure, Item No.

5). Acceptable. Close 019 Verify that the containment purge isolation radiation Date: 4/27/10 45. Closed Closed NRC Meeting TVA Letter EICB (Garg) monitor is the same as used in Watts Bar Unit 1, or Summary dated 4/27/10 identify any hardware changes. By latter dated April 27, 2010 TVA responded to Date: 4/27/10 NRC Review ML093560019, this request for information (Enclosure 1, Item No. Item No. 6 TVA Letter

6) for the ratemeter. dated 6/18/10 A newer model, RD-52, of the RD-32 detector assembly used in Unit 1. The detector assembly replacement is due to obsolescence and improved reliability.

Clarify electronics are analog and the same as unit 1 and the only difference is the detector assembly.

020 Provide environmental qualification information Date: 4/27/10 46. Closed Closed NRC Meeting TVA Letter NNC 4/30/10: SRP Section 7.0 EICB (Garg) pursuant to Section 50.49 of Title 10 of the Code of Responder: TVA Summary dated 4/27/10 states: "The organization Federal Regulations (10 CFR) for safety-related Date: 4/27/10 ML093560019, responsible for the review of actuation transmitters. By letter dated April 27, 2010 TVA responded to Responsibility: NRC (EEEB) Item No. 7 environmental qualification this request for information (Enclosure, Item No. reviews the environmental 7). Garg to coordinate with Weibi qualification of I&C equipment.

to ensure EEEB takes The scope of this review responsibility for this one. includes the design criteria and qualification testing methods and procedures for I&C equipment."

021 7.3 For the Foxboro Spec 200 platform, identify any Date: 5/25/10 47. Closed Closed NRC Meeting TVA Letter The resolution of this item will be EICB (Garg) changes in hardware from the precedent systems. The resolution of this item will Summary dated 6/18/10 covered by OI#288..

Provide the design report and the equipment No vendor system description is available for the be covered by OI#288 ML093560019, qualification information. Foxboro Spec 200 system. The hardware Item No. 8 description and qualification documents are Date: 5/24/10 provided on a component level basis. A TVA generated system description is provided to assist The understanding reached in the reviewer. The hardware differences from the the meeting on April 14, 2010, unit 1 systems are provided in the loop and card was that TVA should identify comparison documents. As agreed with the any changes, or state under reviewer, the component level documents are not oath and affirmation that there required to be submitted at this time, but may be were no changes. If there required later based on the review of attached were no changes, then the documents. The following TVA generated NRC would confirm by documents are provided (Attachment 1): inspection.

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date

1. Analog loop comparison A revised response was requested at the 5/24/10

2. Analog card comparison public meeting.

3. Analog system description Add a brief discussion of the Foxboro Spec 200 to the FSAR let Hukam know on Thursday which section we will add the discussion to.

023 Provide environmental qualification (10 CFR 50.49) Date: 4/27/10 48. Closed Closed NRC Meeting TVA Letter NNC 4/30/10: SRP Section 7.0 EICB (Garg) information for safety-related control transmitters and Responder: TVA Summary dated 4/27/10 states: "The organization complete the deviation section of the table. Date: 12/22/09 ML093560019, responsible for the review of By letter dated April 27, 2010 TVA responded to Responsibility: NRC (EEEB) Item No. 10 environmental qualification this request for information (Enclosure, Item No. reviews the environmental 10). Garg to coordinate with Weibi qualification of I&C equipment.

to ensure EEEB takes The scope of this review responsibility for this one. includes the design criteria and qualification testing methods and procedures for I&C equipment."

025 7.5.2 7.5.1 For the containment radiation high radiation monitor, Date: 4/27/10 49. Closed Closed NRC Meeting ML101230248, EICB verify that the information provided by TVA is Summary Item 12 (Singh) consistent with the information provided with the By letter dated April 27, 2010 TVA responded to (See OI 300 for additional ML093560019, 4/27/2010 previously-approved license amendment request for this request for information (Enclosure, Item No. questions.) Item No. 12 the Duane Arnold plant or provide Phase 3 12).

information.

026 Provide environmental qualification (10 CFR 50.49) Date: 4/27/10 50. Closed Closed NRC Meeting TVA Letter NNC 4/30/10: SRP Section 7.0 EICB (Garg) information for safety-related monitoring transmitters. Responder: TVA Summary dated 4/27/10 states: "The organization Date: 12/22/09 ML093560019, responsible for the review of By letter dated April 27, 2010 TVA responded to Responsibility: NRC (EEEB) Item No. 13 environmental qualification this request for information (Enclosure, Item No. reviews the environmental 13). Garg to coordinate with Weibi qualification of I&C equipment.

to ensure EEEB takes The scope of this review responsibility for this one. includes the design criteria and qualification testing methods and procedures for I&C equipment."

027 7.7.1. For Foxboro I/A provide information regarding Date: 4/27/10 51. Closed Closed NRC Meeting TVA Letter EICB (Carte) 4 safety/non-safety-related interaction, common cause Responder: TVA Summary dated 4/27/10 failures, and communication with safety related ML093560019, equipment in accordance with ISG 4. By letter dated April 27, 2010 TVA responded to Item No. 14 this request for information (Enclosure, Item No.

14): "There is no digital communications or interactions between Foxboro Intelligent Automation (IA) and any Safety-related system."

028 For the turbine control AEH system, verify that the Responder: Mark Scansen 52. Closed Closed NRC Meeting TVA Letter EICB (Garg) refurbishment results in a like-for-like replacement. Date: 4/27/10 Summary dated 10/5/10 Response is included in letter Provide 50.59 ML093560019, By letter dated April 27, 2010 TVA responded to dated 10/5/10. Item No. 15 this request for information (Enclosure, Item No.

15). Provide 50.59 evaluation.

Response acceptable.

The requested 50.59 is included in Attachment 1.

029 For the rod control system, verify that the Date: 4/27/10 53. Closed Closed NRC Meeting TVA Letter EICB refurbishment results in a like-for-like replacement. Responder: TVA Summary dated 4/27/10 (Carte) ML093560019, By letter dated April 27, 2010 (ML101230248) Item No. 16 TVA responded to this request for information

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date (Enclosure, Item No. 16 & Attachment 5): TVA stated on a card by card basis that the refurbished cards have the same form fit and function.

030 Regarding the refurbishment of I&C equipment, Responder: Clark 54. Closed Closed NRC Meeting TVA Letter EICB (Garg) identify any component digital upgrades and, if so, Summary dated 10/5/10 provide the supporting design information. Date: 4/27/10 Response is included in letter ML093560019, dated 10/5/10. Item No. 17 By letter dated April 27, 2010 TVA responded to Date: 4/27/10 this request for information (Enclosure, Item No.

17). Does not state if there are no other upgrade which contain There are no other I&C upgrades which contain imbedded digital processor.

an imbedded digital processor. Revised response acceptable.

031 For the rod position indication system (CERPI), Date: 4/27/10 55. Closed Closed NRC Meeting TVA Letter CERPI is non-safety related.

EICB (Carte) provide information in accordance with ISG 4. Need to Responder: TVA Summary dated 4/27/10 Note: The issue of interlock with consider cyber-security issues. ML093560019, rod withdrawal system is By letter dated April 27, 2010 TVA responded to Item No. 18 addressed in open item 301.

this request for information (Enclosure, Item No. (Singh Sept22, 2010) 18).

032 For the process computer, need to consider cyber Date: 4/27/10 56. Closed Closed NRC Meeting TVA Letter EICB will no longer consider EICB (Carte) security issues and emergency response data system Responder: TVA Summary dated 4/27/10 cyber issues.

needs. ML093560019, By letter dated April 27, 2010 TVA responded to Item No. 19 this request for information (Enclosure, Item No.

19).

033 For the loose parts monitoring system, provide Date: 4/27/10 57. Closed Closed NRC Meeting TVA Letter The loose parts monitoring EICB (Carte) information regarding interactions with safety related Responder: TVA Summary dated 4/27/10 system is not connected to any equipment. ML093560019, other system.

By letter dated April 27, 2010 TVA responded to Item No. 20 this request for information (Enclosure, Item No.

20): Loose parts is not connected to any other system.

034 2/4/2010 Responder: TVA 58. Closed Closed N/A TVA Letter EICB (Garg)

Awaiting NRC evaluation of dated 4/27/10 In the December 15, 2009 public meeting, TVA listed By letter dated April 27, 2010 TVA responded to response.

the significant changes made since the Watts Bar Unit this request for information (Enclosure, Item No.

1 Licensing (see below). For each of the following 21).

significant changes:

Remove all references to Elbow Tap Methodology

1) Is the change unique to Unit 2, or will it be the same from Unit 2 Licensing Bases.

as whats currently installed in Unit 1?

2) If its the same as Unit 1, was this change made under a license amendment or under a 50.59?

3) When do you plan to submit the detailed information regarding the changes?

035 2/18/2010 Responder: Clark 59. Closed Closed RAI No. 1 TVA Letter LIC-110 Section 6.2.2 states:

EICB ML102980005 dated 3/12/10 Design features and (Singh) Please provide a system description of the Digital TVA Letter dated March 12, 2010 Enclosure 1, Response is included in letter Att.2 to 10/5/2010 10/26/2010 administrative programs that are Metal Impact Monitoring System that contains item 4 responded to this request for information. dated 10/5/10. TVA letter TVA Letter unique to Unit 2 should be sufficient detail to support a review of this system provided the dated 10/5/10 reviewed in accordance with the using current staff positions. Attachment contains the non-proprietary system Description provide is not of information. current staff positions. Unit 2

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Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date description which was developed from proprietary sufficient detail to allow a FSAR Section 7.6.7, Loose Part Westinghouse Watts Bar Unit 2 DIMMS-DX regulatory determination. TVA Monitoring (LPMS) system Operations and Maintenance Manual, 1TS3176 to send the proprietary Description, describes a system Rev.0 (Reference ). Westinghouse approved this information for NRC review. design that is unique to Unit 2.

non-proprietary version for public release via At the 9-2 meeting G. Singh letter WBT-D-2281 dated August 17, 2010 stated the system description (Reference ) provided was acceptable and the proprietary information was not required at this time.

036 7.5.2 7.5.1 February 18, 2010 Date: 5/25/10 60. Closed Closed NRC Meeting NNC: Unit 2 FSAR Section EICB (Carte)

Responder: Clark Summary 7.5.1, Post Accident Monitoring Please provide a system description of the Post ML093560019, Instrumentation, describes a Accident Monitoring System that contains sufficient In previous letters TVA has provided the Common Item No. 11 system design that is unique to detail to support a review of this system using current Q documents that address this item: Unit 2. LIC-110, "Watts Bar Unit staff positions. 2 License Application Review,"

states: "Design features and administrative programs that are unique to Unit 2 should then be reviewed in accordance with the current staff positions."

037 7.5.1. 7.5.2 2/18/2010 Responder: Clark Date: 5/25/10 61. Closed Closed N/A TVA Letter FSAR Amendment 100 provides EICB (Marcus) 1 09/16/10 dated 10/5/10 information Is the plant computer a safety-related display system? As identified in TVA letter dated March 12, 2010, Response is included in letter Enclosure 1, item 2, the plant computer system is dated 10/5/10. FSAR Section 7.5, non-safety related. Instrumentation System August 19, 2010 - TVA to Important to Safety, consists of FSAR section 7.5 describes both safety and non- submit markup of FSAR two major subsections: 7.5.1, safety related devices and systems. FSAR Amendment 100. Post Accident Monitoring section 7.1.1.2 is revised in FSAR Amendment Instrumentation (PAM), and 100 submitted to the NRC on TVA letter to the FSAR Amendment 100 states 7.5.2, Plant Computer System.

NRC dated September 1, 2010. Plant computer system is non-safety related. Regulatory Guide 1.70, Standard format and content of Safety Analysis Reports for Nuclear Power Plants, Revision 3 dated November 1978 states (see Section 7.1.1): List all instrumentation, control, and supporting systems that are safety-related including alarms, communication, and display instrumentation. FSAR Section 7.1.1.2, Safety-Related Display Instrumentation, describes, in the first paragraph, the PAM system, and the second paragraph states: All other safety-related instrumentation is discussed in Section 7.5.

Therefore, to be consistent with the preceding paragraph, the FSAR states that the plant computer system is safety related.

Contrary to the FSAR the slides presented at the December 15, 2010 meeting indicate that the

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date plant process computer is not safety-related. Therefore the docketed material is inconsistent and needs to be clarified.

RAI not required 038 7.5.1. 7.5.2 2/18/2010 Responder: Clark Date: 5/25/10 62. Closed Closed EICB RAI TVA Letter The slides presented at the EICB (Marcus) 1 ML102861885 dated 10/5/10 December 15, 2010 meeting Please provide a description of the interfaces between: FSAR sections 7.1.1.2 and 7.5.2 are revised to Response is included in letter NRC issue formal Item No. 19 (ML093520967) indicate that the (1) the Safety Parameter Display System and (2) the address this comment in FSAR Amendment 100 dated 10/5/10. RAI. plant process computer has Technical Support Center and Nuclear Data Links with submitted to the NRC on TVA letter to the NRC been replaced.

the plant control and safety systems. This Description dated September 1, 2010. August 19, 2010 - TVA to should contain sufficient detail to support a review of submit markup of FSAR EICB RAI ML102861885 sent to these interfaces using current staff positions. Amendment 100. DORL NRC confirmed FSAR Amendment 100 provides details on interfaces.

039 January 13, 2010 Responder: Clark Date: 63. Closed Closed EICB RAI FSAR The equation for the calculation EICB (Garg) 5/25/10 ML102910008 amendment 98 of the estimated average hot leg Please describe the change to the calculation of the Date: 1/13/2010 OI#37 temperature on page 7.2-13 of estimated average hot leg temperature (see FSAR Refer to revised equations in FSAR amendment Responsibility: TVA Revision WBNP-96 of the Unit 2 Section 7.2.1.1.4, page 7.2-14 Version WBNP-96) in 98. FSAR is different than the sufficient detail to support a review of this system NRC staff will review calculation of the average hot leg using current staff positions. temperature shown at the top of page 7.2-14 of version WBNP-1 of the UNIT 1 FSAR.

040 January 13, 2010 Responder: Clark Date: 64. Closed Closed EICB RAI EICB FSAR The equation for the calculation EICB (Garg) 5/25/10 RAI amendment 98 of the power fraction on page Please describe the change to the calculation of the Date: 1/13/2010 ML102910008 7.2-14 of Revision WBNP-96 of power fraction (see FSAR Section 7.2.1.1.4, page 7.2- Refer to revised equations in FSAR amendment Responsibility: TVA OI#38 the Unit 2 FSAR is different than 13 Version WBNP-96) in sufficient detail to support a 98. the calculation of the power review of this system using current staff positions. NRC staff will review fraction shown at the top of page 7.2-14 of version WBNP-1 of the UNIT 1 FSAR.

042 All All February 25, 2010: Telecom Date: 5/25/10 65. Closed Closed EICB RAI TVA Letter The drawing provided did not EICB (All)

Responder: Clark ML102910002 dated 6/18/10 have the identification numbers On December 16, 2009: EICB stated to DORL: "I am Date: 2/25/2010 Item No. 1 as in the FSAR.

having trouble reading the drawings in the binder that Attachment 2 provides a drawing cross reference Responsibility: TVA was given to me. Is it possible to produce a set of full list for FSAR Chapter 7 and electronic copies of size drawing that are in the FSAR?" the fully legible current drawings previously TVA provided readable submitted in full size hard copies. drawings.

On February 23, 2010: EICB received a set of enlarged Chapter 7 FSAR pages (drawings) that are still unreadable.

Please provide readable drawings 044 7.5.2 7.5.1 February 25, 2010 Date: 5/25/10 66. Closed Closed EICB RAI TVA Letter EICB (Carte)

Responder: Clark ML102910002 dated 6/18/10 The PAMS system described in Section 7.5 of the Item No. 3 FSAR is implemented in various manners. TVA By letter Dated June 18, 2010 (see Enclosure 1 should identify: Item 6) TVA provided information requested.

(1) Those variables that are implemented identical to what was reviewed and approved for Unit 1.

(2) Those variable that are implemented identical to Unit 1, but that have been changed (e.g., under 50.59) and not reviewed by the NRC.

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Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date (3) Those variables that are implemented in a manner that is unique to Unit 2 (e.g., using Common Q).

TVA should supply supporting information appropriate to the manner of implementation.

045 February 25, 2010 Date: 5/25/10 67. Closed Closed EICB RAI TVA Letter EICB (Carte)

Responder: Clark ML102910002 dated 7/30/10 For each system implemented using a digital Item No. 4 (ML102160349 technology, please identify any communications There are no communications between divisions. - See between divisions, or between safety-related The response includes the description of Enclosure 1 equipment and non-safety-related equipment. Please communications and isolation between the Item No. 4.)

describe the implementation of the associated Common Q PAMS, Eagle 21 and RM-1000 communications isolation. radiation monitors and non safety systems.

046 February 25, 2010 Date: 5/25/10 68. Closed Closed N/A - Request N/A EICB (Carte)

Responder: Clark for help finding The Watts Bar Unit 1 Ser (Section 7.2.1, page 7-3) information identifies that the RTS includes a trip from the "general FSAR amendment 98, Section 7.2.2.2, page 7.2-warning alarm". Please identify where this trip is 29 second paragraph states:

described in the current FSAR, or what SSER approved its removal. "Auxiliary contacts of the bypass breakers are connected into the SSPS General Warning Alarm System of their respective trains such that if either train is placed in test while the bypass breaker of the other train is closed, both reactor trip breakers and both bypass breakers will automatically trip."

047 7.5.2 7.5.1 4/8/2010 Responder: WEC/Hilmes Date: 5/25/10 69. Closed Closed EICB RAI TVA Letter EICB (Carte)

ML102910002 dated 7/30/10 The PAMS System Requirements Specification The licensing basis for WBN Unit 2 is Regulatory NNC 8/9/10: There are two Item No. 5 (ML102160349 (SysRS) references RG 1.97 Rev. 3 where the FSAR Guide 1.97 Revision 2. The Common Q PAMS aspects of this issue. The first - See References Rev. 2. Please explain. system was designed to Regulatory Guide 1.97 aspect has been addressed by Enclosure 1 Revision 3, which is why the basis for the System the response dated 7/30/10. Item No. 5)

Requirements Specification references revision 3. The second aspect is: How In order to resolve this discrepancy an could Westinghouse Design, TVA Letter engineering evaluation of the Common Q PAMS and TVA approve a design to dated 10/21/10 was performed. the wrong requirement? Enclosure 1 Item No. 1 Attachment 2 contains an engineering evaluation The revised response was of the Common Q PAMS design against the provided in TVA Letter to the requirements of Reg. Guide 1.97 Rev. 2. The NRC Dated 10/21/10.

evaluation concluded that the Common Q PAMS meets all requirements of Reg Guide 1.97 Rev. 2.

This evaluation will be added to design criteria WB-DC-30-7, Post Accident Monitoring Instrumentation by October 1, 2010.

TVA Revised Response:

The difference in revisions of Reg. Guide 1.97 was not identified during the contract review process. Therefore Westinghouse designed the system to the Common Q standard design which is revision 3. When the design work was assigned to a new engineer, the difference in revisions was not identified as an issue. When the issue was identified by the NRC, it was entered into the TVA Corrective Action Process as WBPER233598 (Attachment 3)

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Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date 048 7.5.2 7.5.1 April 8, 2010 Date: 5/25/10 70. Closed Closed EICB RAI TVA Letter EICB (Carte)

Responder: WEC ML102910002 dated 6/18/10 Reference 16 of the PAMS System Requirements Item No. 6 Specification (SysRS) is the Unit 1 precautions To ensure technical fidelity with the Unit 1 ICCM-Limitations and Setpoints document. When and how 86 system, the Unit 1 PLS was used as an input will the transition to the unit 2 document be made? to the Common Q PAMS System Requirements Specification. This was done to ensure the Unit 2 PAMS had at a minimum the same capabilities and accuracy as the unit 1 system.

The Unit 2 Common Q PAMS PLS section was developed based on the actual Common Q PAMS system design as reflected in the System Requirements Specification. As such, the Common Q PAMS PLS section is an output of the Common Q PAMS System Requirements Specification. Therefore, no transition from the Unit 1 to the Unit 2 PLS is required.

The Unit 2 PLS is scheduled to be issued December 13, 2010.

049 7.5.2 7.5.1 4/8/2010 Responder: WEC Date: 5/25/10 71. Closed Closed EICB RAI TVA Letter EICB (Carte)

ML102910002 dated 6/18/10 Please provide 00000-ICE-30156 Rev. 6. The PAMS Per Westinghouse letter WBT-D-2024 (Reference Item No. 7 SysRS incorporates sections of this document by 7), this document is available for audit at the TVA Letter reference. Westinghouse Rockville office. dated 10/5/10 This document was submitted on September 2, 2010.

051 April 15, 2010 Date: 5/25/10 72. Closed Closed N/A N/A Review addressed by another EICB (Garg)

Responder: Craig/Webb Open Item, NRC staff has issued RIS 2006-17, to provide Date: 4/15/2010 This item is closed guidance to the industry regarding the instrument This item is addressed as follows: Responsibility: TVA as it will be setpoint methodology which complies with reviewed under 10CFR50.36 requirements. The staff has requested 1. FSAR Amendment 100 which was submitted This item is to be worked with item 154. FSAR all the licensees for the existing license to demonstrate on TVA letter to the NRC dated August __, 2010 item 108. AMD 100 how they meet the guidance provided in this RIS. The incorporates as-found and as-left setpoint staff consider WBN 2 as a license amendment for all tolerance discussion into section 7.1.2.1.9, adds the setpoints in the TS. Provide the information on EEB-TI-28, Setpoint Methodology to the section how WBN 2's setpoint methodology meets the 7.1 references and adds a reference to 7.1.2.1.9 guidance of RIS 2006 -17. You may also consider the to section 7.2.1.1.10.

guidance provided in TSTF - 493, rev.4 as a basis for meeting the RIS 2006 -17 guidance. 2. TSTF-493, Rev. 4 Option A has been incorporated into the Unit 2 Tech Spec submittal dated February 2, 2010.

3. Refer to TVA to NRC letter dated August 25, 2008.

052 7.5.2 7.5.1 April 19, 2010 Date: 5/25/10 73. Closed Closed RAI No. 12 EICB (Singh)

Responder: Slifer ML102980005 Please identify the systems that will use the RM-1000 Date: 4/19/2010 10/26/2010 radiation monitors. As identified in TVA letter dated March 12, 2010, Responsibility: NRC Enclosure 1, item 3 the RM-1000 radiation monitors are used for the Containment High Range Post Accident Monitors.

(

053 7.5.2 7.5.1 April 19, 2010 Date: 5/25/10 74. Closed Closed RAI No. 13 S

i

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date Responder: Slifer ML102980005 Please identify all FSAR sections that apply to the RM- Date: 4/19/2010 10/26/2010 1000. The containment high range post accident Responsibility: NRC radiation monitors are discussed in FSAR amendment 98 sections 7.5 and 12.3.

056 April 19, 2010 Date: 5/25/10 75. Closed Closed RAI No. 16 TVA Letter Sorrento Radiation Monitoring EICB (Singh)

Responder: Slifer ML102980005 dated 6/18/10 The "RM-1000 Version 1.2 Software Verification and Date: 4/19/2010 10/26/2010 Validation Report," Document No. 04508006 Rev. A, is The initial draft Software Verification and Responsibility: NRC an incremental report. That is to say it addresses the Validation (V&V) report document, version 1.0, verification an validation for changes that resulted in was never issued. TVA provided the requested Version 1.2; therefore, the NRC has not received a Software V&V Report.

software verification and validation report for all other Attachment 4 contains the latest complete aspects of the software. Please provide the last proprietary version 1.1 Software V&V report complete verification and validation report, and all (04508005). The non-proprietary version and incremental reports after the complete report. withholding affidavit will be submitted by July 14, 2010. Submittal of the non-proprietary version and withholding affidavit is tracked by Responses to Licensee Open Items to be Resolved for SER Approval item 119.

The latest proprietary version is 1.2, (an incremental report that addresses the differences from the version 1.1 report) was submitted by TVA Letter dated March 12, 2010 (Reference 4).

Submittal of the non-proprietary version and withholding affidavit is tracked by Responses to Licensee Open Items to be Resolved for SER Approval item 101, due June 30, 2010.

057 7.5.2 7.5.1 4/19/2010 Responder: TVA I&C Staff Date: 76. Closed Closed RAI No. 17 TVA Letter EICB (Singh) 5/25/10 ML102980005 dated 6/18/10 Please describe the ability to change the software of Response is included in letter Closed by 10/26/2010 the RM-1000 at site, including all required equipment Firmware/software changes are done by dated 10/5/10. 10/5/2010 TVA TVA Letter and administrative controls (e.g., temporary digital connecting a laptop to a port on the front of the letter (Item 11 of dated 10/5/10 connections). RM-1000 and placing the Operate/Calibrate letter).

switch in the Calibrate position. The first physical Requested information barrier to access is the location of the RM-1000 in provided. NRC to review.

the main control room which has limited access. Further Information The RM-1000 Operate/Calibrate switch is located Requested: Please confirm behind the hinged front panel. The front panel that the laptop is secure and must be opened (held closed by two access to this laptop is thumbscrews) to access the switch. This commensurate with the provides a physical barrier to inadvertent switch access to the equipment for operation. The system malfunction alarm is which it will be used. Is the visible locally and will annunciate on the control laptop dedicated for calibration board when the switch is in the Calibrate position. of radiation monitors? If the laptop is used for more than Administrative control of software/firmware one application then please updates is in accordance with TVA Standard describe the equipment for Specification SS-E18.15.01, Software which the laptop may be used.

Requirements for Real-Time Data Acquisition and In addition please explain how Control Computer Systems, and TVA procedures software security is assured SPP-9.3, Plant Modifications and Engineering and that only the software Change Control, and SPP-2.6, Computer intended for the specific Software Control. Approved changes to application is used. Is the software/firmware are implemented utilizing the connection to the radiation TVA work order process. monitors made via a special

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Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date cable/connectors? Please (1) A laptop is not used to calibrate the monitor. confirm that the RS-232 All TVA in-house activities (calibration, alarm communication port of the setpoint adjustment, etc.) are performed using the radiation monitors will only be touchpad on the monitor. An external computer used for calibration purposes.

(laptop etc.) is only used to perform software or Also please confirm that the firmware updates. TVA does not perform radiation monitor will not be in software or firmware updates using in-house operation during the resources therefore no TVA computer is ever calibration mode. In addition connected to the monitor. If software or firmware please confirm that password updates are required, they are approved via the protection is provided for TVA design change process previously described logging on to the laptop prior and implemented by a vendor representative to start of calibration.

under the TVA work order and Quality Assurance processes.

(2) A laptop is not used to calibrate the monitor.

(3) See the response to Item 1.

(4) See the response to Item 1.

(5) No. The connection between the computer and the RM-1000 is made via a standard RS-232 cable.

(6) The RS-232 connection on the RM-1000 is used to upload new software versions and is not for calibration.

(7) A physical control switch is located behind the front panel on the front edge of the Output Board to change between Operate and Calibration modes on the RM-1000. Placing the switch in the Calibrate position makes the monitor inoperable.

(8) See the response to Item 1.

058 7.5.0 7.5 April 19, 2010 Date: 5/25/10 77. Closed Closed RAI No. 18 TVA Letter EICB (Singh)

Responder: Slifer ML102980005 dated 6/18/10 Please describe all digital communications used in the Date: 4/19/2010 10/26/2010 installed configuration. There are no digital communications between the Responsibility: NRC ML101940236, RM-1000 and any other plant system or Encl 1, Item 13 component. Requested information provided. NRC to review.

059 7.5.2 7.5.1 April 19, 2010 Date: 78. Closed Closed RAI No. 19 TVA Letter EICB (Singh)

Responder: Slifer ML102980005 dated 6/18/10 Previously TVA provided the "RM-1000 Digital Date: 4/19/2010 10/26/2010 Radiation Processor Technical Manual," Document (a) The technical manual is applicable to versions Responsibility: NRC No. 04508100-1TM Revision C dated October 2003. 1.1 and 1.2 of the software.

The "RM-1000 Version 1.2 Software Verification and Requested information Validation Report," Document No. 04508006 Rev. A is (b) Version 1.2 was implemented April 1, 2008 provided. NRC to review.

dated April 2008. (a) What software version does the technical manual address? (b) When was Version 1.2 implemented?

060 7.5.2 7.5.1 April 19, 2010 Date: 5/25/10 79. Closed Closed N/A N/A Addressed by Open Item No. 47 EICB Responder: Clark (Carte) The PAMS System Requirements Specification (SysRS) references RG 1.97 Rev. 3 where the FSAR Duplicate of Item 47 References Rev. 2. Please explain.

061 7.5.2 7.5.1 April 19, 2010 Date: 5/25/10 80. Closed Closed N/A N/A Addressed by Open Item No. 48 EICB Responder: Clark (Carte) Reference 16 of the PAMS System Requirements Specification (SysRS) is the Unit 1 precautions Duplicate of Item 48.

Limitations and Setpoints document. When and how

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Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date will the transition to the unit 2 document be made.

062 7.5.2 7.5.1 April 19, 2010 Date: 5/25/10 81. Closed Closed N/A N/A Addressed by Open Item No. 49 EICB Responder: Clark (Carte) Please provide 00000-ICE-30156 Rev. 6. The PAMS SysRS incorporates sections of this document by Duplicate of Item 49 reference.

063 7.5.2 7.5.1 April 19, 2010 Date: 5/25/10 82. Closed Closed N/A N/A Addressed by Open Item No. 50 EICB Responder: Clark (Carte) How should the "shall" statements outside of the bracketed requirements be interpreted? Duplicate of Item 50 064 7.5.2 7.5.1 By letter dated March 12, 2010 TVA stated that the Responder: Webb Date: 4/8/2010 83. Closed Closed N/A - No TVA Letter EICB (Carte) target submittal date for the D3 Analysis was April 2, question was dated 10/5/10 2010. The WBN2 Common Q PAMS provides asked. Item redundant signal processing and indication of two was opened to RG-1.97 Type A variables: Core-Exit track Temperature (CET) and Subcooled Margin. In the committment event of a common-cause failure of the Common made by Q PAMS, instrumentation diverse from Common applicant.

Q is available for these two variables. Wide Range (WR) Hot Leg Temperature indication is specified as a diverse variable for CET in the Post-Accident Monitoring Design Criteria, WB-DC-30-7 (Attachment ). WR Hot Leg Temperature indication from all four hot legs is available on control board indicators and plant computer displays.

Temperature and pressure saturation margin calculations are also performed in the plant computer independently of Common Q utilizing different hardware and software. Isolated outputs from the Eagle 21 protection system are provided to the plant computer for four WR Hot Leg Temperature channels and four WR RCS Pressure channels. The temperature channels and two of the pressure channels are the same as those used in the Common Q saturation margin calculations.

The plant computer temperature saturation margin is calculated as the difference in the maximum temperature input and the saturation temperature of the minimum pressure input. The temperature saturation margin is displayed as point ID U0987.

The plant computer pressure saturation margin is calculated as the difference in the minimum pressure input and the saturation pressure of the maximum temperature input. The pressure saturation margin is displayed as point ID U0984.

Reactor Vessel Level Indication (RVLIS) is defined as a Type B1 variable. Redundant indication for this variable is provided by the core exit thermocouples/Thot and reactor coolant system (RCS) pressure. So long as the RCS pressure is greater than the saturation pressure

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date for the temperature indicated by the core exit thermocouples/Thot, there is reasonable assurance that a steam void has not formed in the core and the vessel is full. This is indicated by the subcooled margin monitor/plant computer previously discussed.

066 7.5.2 7.5.1 By letter dated March 12, 2010 TVA stated that the Responder: WEC Date: 5/25/10 84. Closed Closed N/A - No TVA Letter EICB (Carte) target submittal date for the "Watts Bar 2 PAMS question was dated 6/18/10 Software Design Description (two documents, one for Per Westinghouse letter WBT-D-1961 (Reference asked. Item flat panel display and one for AC160)" was March 31, 8), these items are available for audit at the was opened to TVA Letter 2010. Westinghouse Rockville office. track dated 8/20/10 comm8ittment

• WNA-SD-00250-WBT Rev. 0 (AC160) was made by TVA Letter submitted on TVA letter to the NRC dated August applicant. dated 9/2/10 20, 2010 (Reference 7).

• WNA-SD-00248-WBT, Rev. 0 (FPDS) was TVA Letter submitted on TVA letter to the NRC dated SEPT dated 10/5/10 2, 2010 (Reference 8).

077 7.5.2 7.5.1 By letter dated March 12, 2010 TVA stated that the Responder: WEC Date: 5/25/10 85. Closed Closed N/A - No TVA Letter EICB (Carte) target submittal date for seven other documents was question was dated 6/18/10 "TDB". Please provide a schedule for the docketing of The availability dates for these documents are Open asked. Item the remaining documents. included in the revised WBN2 Common Q ISG-6 was opened to 10/22/10 Compliance Matrix submitted in response to item Regulations require that the track

43. As stated in the March 12, 2010 letter NRC review be based on commitment (Reference 4), the dates in the matrix are the docketed material. Awaiting made by dates the documents will be available to TVA to for document to be docketed applicant.

prepare for submittal or being Available for by TVA.

Audit. They do not reflect the dates the documents will be submitted to the NRC.

Expected submittal date is two weeks after TVA receives the document.

Note: There is a typo in the matrix in line item 33.

The power supply entry date says TBD. Per Westinghouse letter WBT-D-2035 (Reference 12) this item is complete and the documents are available for audit at the Westinghouse Rockville office.

The Licensing Technical Report now includes a SPM compliance matrix. Submit a revised response.

079 4/26/2010 Responder: Clark Date: 5/25/10 86. Closed Closed EICB RAI TVA Letter Reviewed under Item 154 EICB (Garg)

ML102910008 dated 10/5/10 FSAR Section 7.1.2.1.9, Trip Setpoints, adds (Q1) WBN Unit 2 is licensed based on WBN Unit Response provided in letter This item is closed OI#19 reference to 3, 4, and 5. However, reference 3 was 1. The WBN Unit 1 licensing basis is ISA-DS- dated 10/5/10 as it will be deleted by FSAR amendment 81. Reference 4 has 67.04-1982. Therefore this methodology is used reviewed under been changed to ISA-DS-67.04-1982. Justify for the same SSDs for WBN Unit 2. This item 154. FSAR applicability of this standard for WBN 2.(Q1) Why the maintains consistency in the licensing bases for AMD 100 latest ISA standard endorsed by NRC has not been both units.

used? (Q2) Also reference 5 is a topical report for Eagle 21, system. Please confirm that this topical (Q2) Please refer to the response to Q1.

report also discusses the setpoint for Eagle 21 system and whether it meets the recent guidance for the (Q3) FSAR Reference 4 is the Eagle 21 Topical setpoint issued by the staff. (Q3) Also, W setpoint Report. FSAR Reference 5, WCAP-17044, methodology do not provide discussion on the AS Westinghouse Setpoint Methodology for Found Tolerance and As left value determination and Protection Systems Watts Bar Unit 2 submitted how these values are used for the instrument under TVA letter to the NRC dated February 12,

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date operability, therefore, add the discussion of these 2010 (Reference 11) discusses the setpoint topics in the FSAR. (Q4) and add reference to other methodology used for Eagle 21 loops.

documents if it is discussed in some other document.

(Q5) Provide this document to the staff for review and (Q4) (Q4) FSAR Amendment 100 which was approval. (Q6) submitted on TVA letter to the NRC dated September 1, 2010 (Reference 2) incorporates as-found and as-left setpoint tolerance discussion into section 7.1.2.1.9, adds EEB-TI-28, Setpoint Methodology to the section 7.1 references and adds a reference to 7.1.2.1.9 to section 7.2.1.1.10.

(Q5) Please refer to the response to Q4.

(Q6) EEB-TI-28, Setpoint Methodology was submitted in TVA letter to the NRC dated May 13, 2010 (Reference 12).

080 4/26/2010 Responder: WEC 87. Closed Closed RAI No. 2 TVA Letter EICB ML102980005 dated 7/30/10 (Singh) FSAR Table 7.1-1, Note 12 has been added to the A revised note was included in the 7/30 letter NRC review 10/26/2010 ML102160349, table but it's justification has not been provided to the along with justification for the note. complete. Item 6 staff for review and approval.

083 7.5.2 7.5.1 May 6, 2010 Date: 6/18/10 88. Closed Closed EICB RAI TVA Letter EICB (Carte)

Responder: WEC ML102910002 dated 7/30/10 Please identify all FPGAs in the new or changed Date: 5/6/2010 Item No. 11 PAMS hardware. The FPGAs used in the Common Q PAMS Responsibility: TVA AC160 module are listed in Westinghouse letter WBT-D-2166, (Attachment 5), which provides both the proprietary and non-proprietary information. Attachment 6 (provided by Reference 11) contains the affidavit for withholding for WBT-D-2166-P-Attachment (contained in Attachment 5)..

Additionally, Westinghouse states in, Westinghouse Letter WBT-D-2170, (Reference

10) that their review of Flat Panel displays and PC Node Boxes concluded that they do not contain any FPGAs.

084 7.5.2 7.5.1 May 6, 2010 Date: 6/18/10 89. Closed Closed EICB RAI TVA Letter EICB (Carte)

Responder: Clark ML102910002 dated 6/18/10 Please provide: TVA Design Criteria WB-DC-30-7 Rev. Date: 5/6/2010 Item No. 12 22, Post Accident Monitoring Instrumentation. Attachment 5 contains Design Criteria WB-DC- Responsibility: TVA 30-7 Rev. 22, Post Accident Monitoring Instrumentation. Document received 087 7.5.2 7.5.1 May 6, 2010 Date: 5/24/10 90. Closed Closed RAI No. 20 TVA Letter EICB Responder: Slifer ML102980005 dated 6/18/10 (Singh) Regarding the Sorrento RM-1000 Digital Radiation Date: 5/6/2010 10/26/2010 Processor: Please identify the model and version to be The rate meter is model RM-1000. The software Responsibility: TVA installed. Please include explicit identification of is version 1.2 software version.

088 7.5.2 7.5.1 May 6, 2010 Date: 5/24/10 91. Closed Closed RAI No. 21 TVA Letter EICB Responder: Slifer ML102980005 dated 6/18/10 (Singh) Regarding the Sorrento RM-1000 Digital Radiation Date: 5/6/2010 10/26/2010 Processor: Please provide prior software V&V reports. See response to item 56 Responsibility: TVA The latest report only addresses Version 1.2.

(

089 5/6/2010 Responder: Clark 92. Closed Closed EICB RAI TVA Letter NNC: Docketed response states C

a

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date ML102910002 dated 3/12/10 that the applicable FSAR What FSAR functions are implemented using Foxboro The list of FSAR functions is listed in TVA letter Item No. 15 Sections are:

Intelligent Automation (IA)? dated March 12, 2010, Enclosure 1, item 12 5.6 -

7.2.2.3.2 - Garg FSAR Section 7.7.11 will add a discussion of the 7.2.2.3.3 - Garg DCS. 7.2.2.3.4 - Garg 7.2.2.3.5 - Garg See item 4 for questions on failure modes and 7.2.3 - Garg mesh network. 7.6.8 -

7.7.1.6 -

7.7.1.7 -

7.7.1.8 -

9.3.4.2.1.C -

10.4.7.2 -

090 5/6/2010 Responder: Clark Date: 5/25/10 93. Closed Closed EICB RAI TVA Letter EICB (Carte)

ML102910002 dated 3/12/10 What FSAR Systems are implemented using Foxboro The list of FSAR functions is listed in TVA letter Item No. 16 Intelligent Automation (IA)? dated March 12, 2010, Enclosure 1, item 12 FSAR Section 7.7.11 will add a discussion of the DCS.

See item 4 for questions on failure modes and mesh network.

091 7.4 7.4 May 20, 2010 Date: 5/25/10 94. Closed Closed EICB RAI No.1 TVA Letter EICB (Darbali)

Responder: Clark ML102910017, dated 6/18/10 TVA to submit excerpts of EDCRs 52421, 52987, Two EDCRs have been Item is Closed 10/19/10 52321, 52351 and 52601 1. Attachment 6 contains the EDCR 52421 submitted. TVA has agreed to and replaced by excerpt submit the remaining EDCRs. items 103, 104 and 118.

2. Attachment 7 contains the EDCR 52987 excerpt

3. EDCR 52321 is scheduled to be issued Oct 13, 2010. Submittal of EDCR 52321 excerpts is tracked by Responses to Licensee Open Items to be Resolved for SER Approval item 103 due October 31,2010.

4. EDCR 52351 is scheduled to be issued November 30, 2010. Submittal of EDCR 52351 excerpts is tracked by Responses to Licensee Open Items to be Resolved for SER Approval item 104 due December 15, 2010.

5. Attachment 8 contains the EDCR 52601 (RVLIS) excerpt. The RVLIS EDCR has been split into two EDCRs. The second EDCR is 55385. Submittal of EDCR 55385 excerpts is tracked by Responses to Licensee Open Items to be Resolved for SER Approval item 118 due November 15, 2010.

093 May 20, 2010 Date: 5/25/10 95. Closed Closed N/A N/A Will be reviewed under item 154 EICB Responder: Knuettel (Garg) TVA to submit a letter committing to include setpoint methodology discussion in the FSAR no later than Letter Sent 5/25/10

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date amendment 100.

094 5/20/2010 Responder: Clark Date: 5/25/10 96. Closed Closed N/A N/A Information was found in FSAR EICB (Garg) TVA to locate and provide information on the TMI This item is described in FSAR amendment 98, NRC staff will review.

action item to add an anticipated reactor trip on turbine Section 7.2.1.1.2 item 6 page 7.2.9, and Table trip to the design bases in the FSAR 7.2-1 item 14, page 7.2-39.

095 7.8.1, XX May 20, 2010 Date: 97. Closed Closed EICB RAI No. 2 TVA Letter EICB (Darbali)

7.8.4 Responder

ML102910017, dated 7/30/10 TVA to review SER supplements 5 and 14 item 7.8.1 10/19/10 and supplement 4 item 7.8.4 and confirm if they are Q1: Monitoring of the reactor coolant system relief identical to Unit 1. If not provide differences. valve position is the same as Unit 1.

Q2: The reactor trip on turbine trip is the same as Unit 1.

097 7.4.2 7.4 May 20, 2010 Date: 98. Closed Closed EICB RAI No.4 TVA Letter EICB (Darbali)

Responder: ML102910017, dated 7/30/10 TVA to review SER Supplement 7 item 7.4.25 Response is satisfactory. 10/19/10 deviation on Aux Control Room display of RCS cold The deviation to not have RCS cold leg leg temperature for applicability to Unit 2. temperature displayed in the Auxiliary Control Room was approved as part of the WBN Unit 1 initial license. WBN Unit 2 complies with the WBN Unit 1 Licensing bases and this deviation is applicable to Unit 2.

098 7.4.2 7.4 May 25, 2010 Date: 99. Closed Closed EICB RAI No.5 TVA Letter EICB Responder: ML102910017, dated 7/30/10 Unit 1 SER Supplement 7, RCS Cold Leg Temperature 10/19/10 (Darbali) instrumentation. How does Unit 2 address this Refer to the response to Item 13 11 above.

change?

099 April 12, 2010 Date: 100. Closed Closed Closed to Item 129 DORL (Bailey)

Responder: WEC TVA will provide non-proprietary versions of the following Common Q attached proprietary documents and the affidavits for the proprietary documents by June 30, 2010.

1. System Design Specification WNA-DS-01667-WBT, Rev. 1

2. System Requirements Specification WNA-DS-01617-WBT, Rev. 1

3. Watts Bar 2 - Common Q PAMS ISG-6 Compliance Matrix dated March 4, 2010

4. Watts Bar Unit 2 (WBN2) Post Accident Monitoring System (PAMS) Licensing Technical Report LTR-RCPL-10-XX

5. Software Requirements Specification WNA-SD-00239-WBT, Rev. 1 100 5/20/2010 Responder: WEC 101. Closed Closed N/A - No N/A EICB (Carte) question was The following Common Q proprietary documents listed The documents, and affidavits for withholding for asked. Item in the response and the affidavits for the proprietary the listed documents were submitted to the NRC was opened to documents will be provided by April 9, 2010. on TVA letter to the NRC dated April 8, 2010. track

1. System Design Specification WNA-DS-01667-WBT, commitment Rev. 1 made by

2. System Requirements Specification WNA-DS- applicant.

01617-WBT, Rev. 1

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date

3. Watts Bar 2 - Common Q PAMS ISG-6 Compliance Matrix dated March 4, 2010

4. Watts Bar Unit 2 (WBN2) Post Accident Monitoring System (PAMS) Licensing Technical Report LTR-RCPL-10-XX

5. Software Requirements Specification WNA-SD-00239-WBT, Rev. 1 102 May 24, 2010 Date: 5/24/10 102. Closed Closed N/A TVA Letter Request for schedule not EICB (Carte)

Responder: WEC dated 6/18/10 information.

Provide a schedule for resolution of items 80, 82 and 83 Item 80 - no later than July 23, 2010 Item 82 - no later than July 23, 2010 Item 83 - no later than July 23, 2010 105 April 29, 2010 Date: 103. Closed Closed N/A N/A Will be reviewed under item 154.

EICB (Garg)

Responder: Langley Provide As-Found/As-Left methodology procedure Date: 5/27/10 Submitted copy of TI-28 May 14/2010. Responsibility: NRC Replaced with new open item 176.

106 May 6, 2010 Date: 5/25/10 104. Closed Closed RAI No. 9 TVA Letter EICB (Singh)

Responder: Davies ML102980005 dated 6/18/10 Confirm that the Unit 1 and Unit 2 CERPI systems Date: 10/26/2010 utilize the same processor (AC110 or AC160). Westinghouse Unit 2 Drawing 6D31420, Watts Responsibility:

Bar 2- CERPI AC160 Chassis Configuration, Rev. 2, shows the processors are model AC160, which are the same that are utilized for Unit 1, as shown on Westinghouse drawing 2D82995 Rev.

0, Watts Bar CERPI AC 160 Chassis Configuration.

107 May 6, 2010 Date: 5/28/10 105. Closed Closed RAI No. 22 TVA Letter EICB Responder: Clark ML102980005 dated 6/18/10 (Singh) Describe any control functions associated with the RM- Requested information See 10/26/2010 1000 radiation monitors. The RM-1000 radiation monitors do not provide provided. NRC to review. ML101940236, any control functions. Encl 1, Item 29.

108 May 6, 2010 Date: 5/25/10 106. Closed Closed N/A N/A Will be reviewed under OI#154 EICB (Garg)

Responder: Webb/Hilmes We are requested to docket the fact that the This item is to be worked with This item is closed appropriate sections of chapter 7 of the FSAR will be This item is addressed as follows: item 51. as it will be updated to include references to: reviewed under 109. FSAR Amendment 100 which item 154. FSAR

a. TI-28 to address as-found/as-left issues was submitted on TVA letter to the NRC AMD 100

b. RISC 2006-17 dated August __, 2010 incorporates as-found and as-left setpoint tolerance discussion into section 7.1.2.1.9, adds EEB-TI-28, Setpoint Methodology to the section 7.1 references and adds a reference to 7.1.2.1.9 to section 7.2.1.1.10.

2. TSTF-493, Rev. 4 Option A has been incorporated into the Unit 2 Tech Spec submittal dated February 2, 2010.

(

109. 5/6/2010 Responder: N/A 107. Closed Closed N/A N/A Duplicate of another open Item.

C a

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date b

The reviewer was unable to identify the sections of the TVA Provided response J. Wiebe accepted this action. NRC Action FSAR that correspond to the standard review plan sections7.9.

109. 7.8 XX 5/6/2010 Responder: N/A 108. Closed Closed N/A N/A a EICB The reviewer was unable to identify the sections of the TVA Provided response J. Wiebe accepted this action.

(Darbali) FSAR that correspond to the standard review plan sections 7.8.

110 May 6, 2010 Date: 109. Closed Closed N/A N/A Information was found.

EICB (Garg)

Responder: Clark The reviewer was unable to locate the Eagle 21 WCAPs 12374 and 12375 for review within the NRC These items were docketed under ML073550386 records. We agreed to provide the ADAMS numbers for the submittal.

111 May 6, 2010 Date: 5/28/10 110. Closed Closed N/A TVA Letter Request to help find, not a EICB (Carte)

Responder: Clark dated 6/18/10 request for information.

The reviewer was unable to locate information (SER) on the plant computer or annunciator systems and The annunciator system is not described in the asked us to provide the location within the FSAR WBN Unit 1 UFSAR. As such it is not included in where these systems are described. the WBN Unit 2 FSAR.

With the exception of the ERFDS functions in section 7.5, the plant computer is not described in the WBN Unit 1 UFSAR. As such it is not included in the WBN Unit 2 FSAR.

112 June 1, 2010 Date: 111. Closed Closed N/A N/A Information was received EICB Responder: Clark (Garg) What are the differences between the Unit 1 and Unit 2 Eagle 21 Systems? This information is included in TVA letter dated March 12, 2010, Enclosure 1, Item 10.

113 6/1/2010 Responder: Clark 112. Closed Closed EICB RAI TVA Letter EICB (Garg)

ML102910008 dated 6/18/10 Are the new model Eagle 21 power supplies installed Yes. Attachment 9 provides a work order excerpt Attachment 9 does not show Item #34 in Unit 1? and unit difference form. the vendor and model no. of Revised attachment provided on 7/30 letter. the Power Supply.

115 2/25/2010 Responder: Clark 113. Closed Closed EICB RAI TVA Letter EICB (Carte)

ML102910002 dated 6/18/10 Provide a list of digital 1E systems that have a digital Response states that Eagle21 and the CQ PMAS Response provided in letter Item No. 17 communications path to non safety related systems MTP have communications links to non-safety- dated 10/5/10 TVA Letter and if it has: related systems.. dated 10/5/10

a. Been reviewed before for unit 1

b. Or installed in unit 1 under 50.59, or The original design allowed printing from both the The CQ PAMS SysRS (WNA-

c. Is unique to unit 2 Operator Module (OM) and Maintenance and Test DS-01617-WBT Rev. 1 Figure Panel (MTP) via the plant computer. This 2..1-1) shows that the OM has required both to be connected to the plant a TCP interface to non-safety.

computer. Westinghouse did not perceive this as Please provide a list of ALL an issue, because the standard Common Q digital communications paths PAMS design includes both the flat panel displays to non-safety-related systems.

and individual control panel indicators. The Westinghouse Common Q team did not realize NNC 8/12/10: The staff that WBN does not use the individual control pointed out this inconsistency panel indicators. As a result, the original design to TVA. The staff could documents provided by Westinghouse included consider PAMS Licensing the connection from the OM to the plant Technical Report to be a computer. correction if TVA specifically

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date identified the inconsistency to The TVA team did not realize that the the staff, or identified where Westinghouse design relied on the OM and MTP the error in the SysRS, SRS, to be qualified isolation devices that protected the & SDS had already been AC160 functions and individual control panel identified. This appears to be indicators from interference from the plant a feature in the CQ TR computer. It was not until a meeting was held appendix that was carried with TVA, Westinghouse and Bechtel to discuss forward to WBN2 PAMS the design of the OM that the issues came to inappropriately light. That was when Westinghouse understood that the OM was the PAMS display and WBN did not use individual control panel indicators and TVA/Bechtel understood that the OM was being credited as the qualified isolation device. It became apparent at the meeting to both TVA/Bechtel and Westinghouse that the original design was not acceptable. The team then agreed to delete the OM connection to the plant computer.

116 6/3/2010 Responder: WEC 114. Closed Closed EICB RAI TVA Letter Letter sent to Westinghouse EICB (Garg)

ML102910008 dated 10/5/10 requesting the basis information The Eagle 21 boards originally had a conformal The response to this RAI was submitted in TVA Response provided in letter How is the tin Item # 20 and documentation for submittal coating. However, the new boards do not. Provide the letter to the NRC dated June 21, 2010. dated 10/5/10 whisker issue is to the NRC.

basis for deletion of the conformal coating. addressed. I think As previously stated the technical reason for the conformal coating coating was to ensure performance at high was credited to humidity, with the major concern being the effects protect against tin of humidity on low level analog circuitry. whisker issue.

Westinghouse letter (WBT-D-2036, TENNESSEE VALLEY AUTHORITY WATTS BAR NUCLEAR PLANT UNIT 2, Basis for Removal of Conformal Coating Requirement on Eagle 21 Boards (Reference 7) does not credit the conformal coating as addressing the tin whisker issue.

As addressed in Resolution of Generic Safety Issues: Issue 200: Tin Whiskers (NUREG-0933, Main Report with Supplements 1-33),

CONCLUSION The low number of reported events associated with this issue, the lack of any increasing trend, the lack of any apparent decrease in reliability of systems or components due to tin whiskers, the existence of applicable regulatory requirements and programs (i.e., 10 CFR Part 21, the maintenance rule requirements, and the Reactor Oversight Program), and the issuance of Information Notice 2005-251878 to alert licensees collectively indicated that tin whiskers did not meet the requirements of NRC Management Directive 6.4. "Generic Issues Program," for further pursuit. Based on the considerations discussed above, RES recommended that the issue be returned to the originator to be evaluated for other possible options. As a result, the issue was DROPPED from further pursuit.1879

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date Based on the preceding NRC position no further discussion of the tin whisker issue is required.

119 June 10, 2010 Date: 115. Closed Closed RAI No. 23 TVA Letter EICB (Singh)

Responder: ML102980005 dated 7/30/10 Submit the non-proprietary version of Sorrento/GA 10/26/2010 software V&V report version 1.1 04508005 and Provided 7/15/2010 Date: 07/29/10 withholding affidavit Responsibility: NRC TVA provided the non-proprietary version of V&V report version 1.1 04508005 and the withholding affidavit via TVA letter dated July 15, 2010.

120 5/6/2010 Responder: Hilmes/Merten/Costley 116. Closed Closed EICB RAI TVA Letter EICB (Carte)

ML102910002 dated 7/30/10 In reviewing the Maintenance Test Panel (MTP) link to TVA responded by letter dated July 30, 2010 NNC 8/9/10: By letter dated Item No. 18 the plant computer, the reviewer noted that the MTP (ML102160349) - See Enclosure 1 Item No. 14: July 30, 2010 (ML102160349) software is not purely one directional in that it does Detailed discussion is provided including technical - See Enclosure 1 Item No. 14 allow low level handshaking to support the information on the data diode.

communications protocol. M. Merten/S. Hilmes See Item 85. TVA not crediting the data diode.

a. The reviewer stated that this was a potential a. TVA stated no new concern and requested additional information on how information was found in the MTP was protected from feedback from the plant Westinghouse documentation computer. and that this information would be addressed in the V&V reports, and that the final hardware drawing will be provided. Neither of these two documents will contain the information requested. Please provide a detailed description of the MTP hardware connections and the software that perform the communications.

b. The reviewer stated that in the Oconee review, it b. The information provided was found that the non-safety related data diode was indicates that the MTP is easier to credit than a software barrier. It was connected directly to a non-suggested we look at changing our position to credit safety-related Red Hat Linux the data diode provided it provided a physical barrier to Server which is then feedback. Need OWL Information SAH connected to the data diode devices. Please describe the secure development and operational environment of these Red Hat Linux Servers.

c. During this discussion, the reviewer asked if we had c. The answer is not complete.

information from Westinghouse that demonstrated the A chattering node is one of the ability of Common Q PAMs to withstand a data storm. failure modes of an Ethernet

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date A verbal response was that this was required by link. The MTP is connected to contract as part of the Factory Acceptance Test and a Linux server over an would not be available until the FAT was completed. Ethernet link. What prevents Need to docket the verbal response and provide a date this link from locking up the the information will be available. Believe we stated this MTP by a data storm?

in the Tech Report. SAH 121 5/6/2010 Responder: Webb/Webber 117. Closed Closed EICB RAI TVA Letter EICB (Carte)

ML102980066 dated 7/30/10 If not previously provided, provide the requested The information in the letter provides references Item No. 1 information in items a, b and c for changes to all to previous submittals and a cross reference for platforms between Unit 1 and 2. (Specific request for the Foxboro I/A system.

information on Foxboro IA). D. Webb/H. Webber

a. Describe the hardware differences between unit 1 and unit 2

b. Identify which systems have been transferred to the Foxboro Spec 200 system that utilize a different platform in Unit 1.

c. Identify the functions (ensure all control functions are addressed) that have been transferred to the Foxboro Spec 200 system that utilize a different platform in Unit 1.

122 June 14, 2010 Date: 118. Closed Closed N/A - Request N/A EICB Responder: WEC for schedule not (Carte) Provide a date for completing the next revision of the technical Common Q PAMS System Requirements This is a duplicate of NRC RAI Matrix Item 50 and information.

Specification. is considered closed.

123 7.7.3 7.4.1, 6/14/2010 Responder: 119. Closed Closed ML101720589, TVA Letter EICB (Darbali) 9.3.4. RAIs 21 and 22, dated 7/30/10 2.4 Safety Evaluation(SE) Section 7.7.3 Volume Control 1. The devices in the Volume Control Tank Level Follow up question is to 6/25/10 and Tank Level Control System Control System have been replaced. The Volume request a logic diagram in OI EICB RAI No.8 Control Tank Level Indication and Control 284. ML102910017,

1. Confirm whether or not any Instrumentation & functions have been relocated to the Foxboro IA 10/19/10 Control (I&C) systems or equipment have been system. The transmitters and indicators have changed in the Volume Control Tank Level Control been replaced with 4-20mA technology and the System. transmitters have been changed to Rosemount.

2. In the original Safety Evaluation(SE), NUREG-0847 2. Upscale failure of LT-62-129A: Flow is diverted (ML072060490), Section 7.7.3, the staff addressed a to the holdup tank but makeup continues to concern that was raised by Westinghouse regarding maintain level and alarms alert the operator.

an adverse control and protection system interaction.

(a single random failure in the VCT level control Upscale failure of LT-62-130A: Unlike Unit 1, the system could cause the letdown flow to be diverted to makeup control system uses inputs from both LT-the liquid holdup tank). Based on your responses to 62-130A and LT-62-129A. This results in a more the staffs questions related to this concern, the staff robust design that eliminates a single point of considered the issue resolved. Confirm that your failure for LT-62-130A. If transmitter LT-62-130A responses are applicable to Unit 2. fails >20mA, the system disregards the input and uses the LT-62-129A signal for control. If transmitter LT-62-130A is high but <20 mA, the deviation between the two causes an alarm, and the diverter valve loop and makeup control both use the last good value of the average. Once the level goes high or low, alarms on LT-62-129A alert the operator to take action to mitigate.

(

124 7.7.5 XX 6/14/2010 Responder: 120. Closed Closed ML101720589, TVA Letter D

a r

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date Item No. 23, dated 7/30/10 SE Section 7.7.5 IE Information Notice 79-22 Duplicate of item 96 6/25/10 and EICB RAI No. 9

1. In the original SE, Section 7.7.5, the staff ML102910017, determined that Information Notice 79-22 was resolved 10/19/10 based on your statement that the control and logic functions of the Watts Bar plant were identical to the Sequoyah plant, thus making the Sequoyah evaluation applicable to Watts Bar. Confirm that your statements regarding the control and logic functions are applicable to Unit 2s control and logic functions or describe any changes and why they are acceptable.

125 7.7.8 7.7.1. 6/14/2010 Responder: 121. Closed Closed ML101720589, TVA Letter EICB (Darbali) 12 Item No.s 24 dated 7/30/10 SE Section 7.7.8 AMSAC 1. The AMSAC system was not previously and 25, 6/25/10 installed in Unit 2. EDCR 52408 installs the and EICB RAI

1. Confirm whether or not any I&C systems or system. Attachment 3 contains excerpts from the Nos.10 and 11 equipment have been changed in the AMSAC? EDCR that describe the Unit 2 system and how it ML102910017, Describe the changes, if any. differs from the Unit 1 system. 10/19/10

2. NUREG-0847, Supplement 14 (ML072060486), 2. EDCR 52408 incorporates the AMSAC system documents the staffs review of FSAR Amendment 81 into the Unit 2 drawings.

that found that the AMSAC automatic initiation signal

[to start the turbine-driven and motor-driven AFW pumps] was not added to the logic diagram for the AFW system shown in FSAR Figure 7.3-3, Sheet 2.

The issue was resolved in Amendment 88. Confirm that this signal has been incorporated in the Unit 2 drawings.

126 7.8 7.8 June 14, 2010 Date: 122. Closed Closed ML101720589, TVA Letter EICB (Darbali)

Responder: Item No. 26, dated 7/30/10 SE Section 7.8 NUREG-0737 Items 6/25/10 and No I&C components or systems are affected by EICB RAI No.12

1. In the SER Cross Reference To FSAR table (06 this change. ML102910017, 09), section 7.8.5 Confirm Existence of Anticipatory 10/19/10 Reactor Trip Upon Turbine Trip (II.K.3.12) has the following scope of change:

Common Station Service Transformers (CSST) A and B, eight (8) vital inverters vs. four, fifth DG will be removed from FSAR, Double breaker, double breaker scheme of the new Watts Bar 500kV switchyard.

Is any I&C system or component affected in the scope of this change?

127 7.2 7.2 6/16/2010 Responder: WEC/Clark 123. Closed Closed EICB RAI TVA Letter EICB (Garg)

ML102910008 dated 6/18/10 Provide the status of the Eagle 21 Rack 2 RTD The following non-proprietary response was Item36 accuracy issue. developed from proprietary Westinghouse letter WBT-D-2034 (Reference 15), which provided the details of this issue. Westinghouse approved this non-proprietary response via e-mail from A. Drake to M. Clark on June 16, 2010.

During the Watts Bar Unit 2 Eagle 21 Factory Acceptance Test (FAT) of Rack 2 it was discovered that the narrow range Resistance Temperature Detector (RTD) temperature inputs

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date were consistently reading about 0.2 °F higher than expected. Investigation revealed that these inputs are configured in the Loop Calculation Processor software as a shared RTD. This is incorrect. Rack 2 RTD's are not shared. Racks 6, 10 and 13 RTD's are. Configuration as a shared RTD input alters the equation used for the temperature calculation. Watts Bar Unit 1 uses identical software to Unit 2.

Further investigation by Westinghouse showed this configuration error causes the Narrow Range Temperatures for only Division I to read 0.2 to 0.27 °F higher over the Narrow Range span of 510-650 °F. The 0.2 °F shift affects Thot and Tcold equally and thus will not affect the indication of Delta T. Tavg will indicate high by 0.2 °F which will decrease the Over temperature and Overpower set points; which is in the conservative direction.

128 7.2 7.2 6/18/2010 Responder: WEC Drake /TVA Craig 124. Closed Closed EICB RAI Track through SE open item EICB (Garg)

ML102910008 Submit the report on the final resolution of the Eagle The Unit 1/Unit 2 Eagle 21 configuration has a Response is included in letter Due 10/31/10 Item46 21 Rack 2 RTD input issue sufficient number of spare Narrow Range and dated 10/29/10 Wide Range RTD inputs available on the installed ERI-01 and ERI-02 boards to wire these spare Has it been tested to show inputs to the active channels. The spare input will that the revised config.

provide the parallel resistance to resolve the Provide the needed accuracy.

problem. The Wide Range (WR) RTD inputs provide the same input impedance as the Narrow Range (NR) RTD inputs. Jumpers will be installed at the Eagle 21 termination frame to provide a parallel connection from each existing NR RTD input to an existing spare input, thus simulating the hardware connection for shared RTDs.

Therefore, as configured, the Rack 2 Loop Calculation Processor (LCP) would provide the correct temperature calculation for the NR RTDs.

129 6/12/2010 Responder: WEC 125. Closed Closed N/A TVA Letter DORL (Poole) dated 10/5/10 TVA will provide non-proprietary versions of the The documents, and affidavits for withholding for Response provided in letter Confirmation by following Common Q attached proprietary documents the listed documents were submitted to the NRC dated 10/5/10 10/14/108 and the affidavits for the proprietary documents by on TVA letter to the NRC dated July 14, 2010.

June 30, 2010.

1. System Design Specification WNA-DS-01667-WBT, Rev. 1

2. System Requirements Specification WNA-DS-01617-WBT, Rev. 1

3. Software Requirements Specification WNA-SD-00239-WBT, Rev. 1 130 6/28/2010 Responder: Clark 126. Closed Closed N/A TVA Letter DORL dated 10/5/10 (Poole) TVA committed to revise in Amendment 100: table 4.3- FSAR Amendment 100 submitted to the NRC on Response provided in letter Confirmation by 1 to add ID and OD nomenclature to thimble guide TVA letter to the NRC dated September 1, 2010 dated 10/5/10 10/14/10 tube dimensions . added the ID and OD nomenclature.

(

131 6/28/2010 Responder: Clark 127. Closed Closed N/A TVA Letter P

o

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Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date dated 10/5/10 TVA committed to revise in Amendment 100: FSAR FSAR Amendment 100 submitted to the NRC on Response provided in letter Confirmation by 3.10 references to eliminate (LATER) for document TVA letter to the NRC dated September 1, 2010 dated 10/5/10 10/14/10 numbers. updated the reference document number information.

132 6/28/2010 Responder: Clark 128. Closed Closed N/A TVA Letter DORL dated 10/5/10 (Poole) TVA committed to revise in Amendment 100: FSAR FSAR Amendment 100 submitted to the NRC on Response provided in letter Confirmation by 3.10 to correct differences between the list on page TVA letter to the NRC dated September 1, 2010 dated 10/5/10 10/14/10 3.10-4 and the numbering referenced by the text below corrected the numbering in the text.

the list.

133 6/28/2010 Responder: Clark 129. Closed Closed TVA Letter DORL dated 10/5/10 (Poole) TVA committed to revise in Amendment 100: FSAR FSAR Amendment 100 submitted to the NRC on Response provided in letter Confirmation by 3.10 to remove references to IEEE 344-1987. TVA letter to the NRC dated September 1, 2010 dated 10/5/10 10/14/10 removed the reference to IEEE 344-1987.

134 6/28/2010 Responder: Clark 130. Closed Closed TVA Letter DORL dated 10/5/10 (Poole) TVA committed to revise in Amendment 100: FSAR FSAR Amendment 100 submitted to the NRC on Response provided in letter Confirmation by Table 1.3-3 to reflect modifications to WBN2 . TVA letter to the NRC dated September 1 2010 dated 10/5/10 10/14/10 updated the table to reflect the WBN2 modifications.

135 7.3.1 7.3.1 6/30/2010 Responder: Clark 131. Closed Closed RAI not TVA Letter EICB necessary dated 10/5/10, TVA committed to add in Amendment 100 a reference FSAR Amendment 100 submitted to the NRC on Response provided in letter because this item 27 (Darbali) to 7.3.1.1.1 in 6.2.5.2.b. TVA letter to the NRC dated Sept 1, 2010 added dated 10/5/10 item was the reference. originated by Amendment 100 received. TVA 136 7.3.2, 7.4, 6/30/2010 Responder: Clark 132. Closed Closed RAI not TVA Letter EICB (Darbali) 7.4 5.6, necessary dated 10/5/10, 6.3.5 TVA committed to replace in Amendment 100 the FSAR Amendment 100 submitted to the NRC on Response provided in letter because this item 28 terms "service water" and "emergency raw cooling TVA letter to the NRC dated Sept 1, 2010 dated 10/5/10 item was water" where they are used incorrectly with "Essential updated the "service water" and "emergency raw originated by Raw Cooling Water" in sections 7.4, 6.2.1, Table 3.7- cooling water" nomenclature as required to read TVA 25, Table 9.3-3, Table 15.4-14, 1.9.2.7, 7.3.2.2.5 and essential raw cooling water. Amendment 100 received.

11.2.4.

137 Several WBN2 PAMS documents contain a table titled, Responder: WEC 133. Closed Closed ML101650255, TVA Letter EICB (Carte)

Document Traceability & Compliance. Item No. 1 dated 10/5/10 (a) The table is to show the document hierarchy Response provided in letter (a) Please explain the purpose of this table. (i.e., what documents are predecessors to the dated 10/5/10 document in relationship to the design life cycle).

(b) Please describe how this table is different than a reference list. (b) This table is showing a hierarchical Carte accepted this response relationship between documents. These 9/1 (c) What does it mean for a document to be listed in documents are also in the reference list along this table? with other documents that have no hierarchical relationship with the document.

(c) This question is similar to (a). It is to identify the documents that are predecessors to this document in relationship to the design life cycle.

139 The WBN2 PAMS System Requirements Specification Responder: WEC 134. Closed Closed ML101650255, TVA Letter WBN2 PAMS System EICB (WBN2 PAMS SysRS) contains a table (see page iii) Item No. 3 dated 10/5/10 Requirements Specification (Carte) titled, Document Traceability & Compliance, which The table is to show the document hierarchy (i.e., Response provided in letter states that the WBN2 PAMS SysRS was created to what documents are predecessors to the dated 10/5/10 TVA docketed WNA-DS-01617-support no documents. Please explain. document in relationship to the design life cycle). WBT Rev. 1, RRAS Watts Bar 2

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date The table purpose is to provide references to NSSS Completion Program I&C internal Westinghouse documents and is not Projects Post Accident intended to reference TVA documents. Monitoring System- System Requirements Specification, dated December 2009.

141 Deleted by DORL Date: 135. Closed Closed ML101650255, WBN2 PAMS System EICB (Carte)

Responder: Item No. 5 Requirements Specification TVA docketed WNA-DS-01617-WBT Rev. 1, RRAS Watts Bar 2 NSSS Completion Program I&C Projects Post Accident Monitoring System- System Requirements Specification, dated December 2009.

146 6/17/2010 Responder: 136. Closed Closed ML101650255, PAMS System Requirements EICB (Carte)

Item No. 10 Specifications Deleted by DORL WBN2 PAMS documents reference generic PAMS documents, for example: WBN2 PAMS SysRS

References:

00000-ICE-30156 Rev. 6, System Requirements Specification for the Common Q Post Accident Monitoring System, and 00000-ICE-30155, Rev. 9, System Requirements Specification for the Common Q Generic Flat Panel Display 147 6/17/2010 Responder: 137. Closed Closed ML101650255, PAMS System Requirements EICB (Carte)

Item No. 11 Specifications Deleted by DORL WBN2 PAMS documents reference generic PAMS documents, for example: WBN2 PAMS SysRS

References:

00000-ICE-30156 Rev. 6, System Requirements Specification for the Common Q Post Accident Monitoring System, and 00000-ICE-30155, Rev. 9, System Requirements Specification for the Common Q Generic Flat Panel Display 148 6/17/2010 Responder: 138. Closed Closed ML101650255, PAMS System Requirements EICB (Carte)

Item No. 12 Specifications Deleted by DORL WBN2 PAMS documents reference generic PAMS documents, for example: WBN2 PAMS SysRS

References:

00000-ICE-30156 Rev. 6, System Requirements Specification for the Common Q Post Accident Monitoring System, and 00000-ICE-30155,

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date Rev. 9, System Requirements Specification for the Common Q Generic Flat Panel Display 155 7.2 7.2 Summary of FSAR change document section 7.2 Date: 139. Closed Closed ML101720589, EICB (Garg) states that sections 7.2.1.1.9 and 7.2.2.2(4) are Responder: Stockton Item No. 7 changed to show that these activities will occur in TVA to provide future. However, no changes were made to the FSAR The change package summary were the changes date when sections. Please explain. recommended by Engineering. TVA Licensing is information will be responsible for the actual submittal and elected docketed not to incorporate these recommendations. The activities are complete and the text in Amendment 99 of the FSAR is correct.

158 7.2 7.2 FSAR section 7.2.2.1.1, paragraph six was changed to Responder: Tindell 140. Closed Closed ML101720589, TVA Letter EICB (Garg) state that the design meets the requirements of Item No. 10 dated 10/5/10 Criterion 23 of the 1971 GDC instead of the Criterion FSAR Amendment 99 reflects the change to Response provided in letter 21 of the GDC. The Criterion 21 is about protection Criterion 23. dated 10/5/10 system reliability and testability, while Criterion 23 is about protection system failure modes. Since this paragraph deals with the evaluation of design with respect to common-mode failure, the staff believes that Criterion 23 is the right reference for this paragraph.

Please clarify.

161 7.2 7.2 FSAR section 7.2.2.3 states that changes to the Responder: Clark 141. Closed Closed ML101720589, TVA Letter EICB (Garg) control function description in this section are expected Item No. 13 dated 10/5/10 to be required after vendor design of the Unit 2 FSAR Amendment 99 reflects the changes Response provided in letter Foxboro IA design is complete. Provide the schedule associated with the Foxboro I/A system design. dated 10/5/10 for the completion of the design and when this information will be available to the staff for review and approval.

162 7.2 7.2 FSAR section 7.2.2.2(14) states that bypass of a Responder: Tindell 142. Closed Closed ML101720589, TVA Letter EICB protection channel during testing is indicated by an Item No. 14 dated 10/5/10 (Garg) alarm in the control room. Explain how this meets RG The Bypassed and Inoperable Status Indication Response provided in letter 1.47. System (BISI) compliance with Reg. Guide 1.47 is dated 10/5/10 described in detail in FSAR Section 7.5.2.2.

163 7.2 7.2 C B

(G Deleted by DORL Date: 143. Closed Closed ML101720589, ar Responder: Item No. 15 164 7.2 7.2 FSAR section 7.2.2.2(20) has been revised to include Responder: Perkins 144. Closed Closed ML101720589, TVA Letter Item No. 8 sent to DORL EICB (GarglMarcus) 7.5.1. the plant computer as a means to provide information Item No. 16 and dated 10/5/10 1 read out for all signals which can cause a reactor trip. The primary purpose of the plant computer is to Response provided in letter NRC to issue EICB RAI Justify the use of the plant computer for this function. present plant process and equipment status dated 10/5/10 formal RAI to TVA ML102861885 Include the discussion on the effect of plant computer information to the control room operators to assist Item No. 8 failure on the system functions. them in the normal operations of the unit, and inform them of any abnormal conditions. The TVA letter dated 10/5/10 plant computer obtains real-time plant parameter Response 44 provided information via Data Acquisition information.

Systems(DAS)(multiplexers, etc.) by scanning preassigned analog, pulse, and contact sensors located throughout the plant. The computer is not defined as being primary safety-related and it is not required to meet the single failure criterion or be qualified to IEEE criteria for Class 1E equipment.

The plant computer system acquires, processes, and displays all data to support the assessment capabilities of the Main Control Room (MCR). To

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Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date help ensure that reactor trip and other information presented to the Operations staff is reliable:

• The data undergoes several validation steps before being presented to the operators. When redundant sensors are used, the data received by the computer can be processed by software to determine if the quality of one or more points is questionable.

• Any software associated with the computer and the DAS must meet the quality requirements of plant procedure SPP-2.6, Computer Software Control which is based on requirements in NUREG/CR-4640, the Watts Bar Nuclear Quality Assurance Plan, and SS-E18.15.01 - Software Requirements for Real-Time Data Acquisition and Control Computer Systems, which complies with IEEE Std. 279-1971 Criteria for Protection Systems for Nuclear Power Generating Stations.

The computer software is controlled by a Software Quality Assurance Plan.

• One of the requirements in 10 CFR 50, Appendix A states that Appropriate controls shall be provided to maintain variables monitored and systems within prescribed operating ranges.

Periodic maintenance and calibration will be performed on the computer and DAS. In addition, calibration procedures for instrumentation which is used for input to the computer include verification of the computer input signal at the DAS and as displayed on the display stations.

• The software and associated hardware undergoes a detailed Factory Acceptance Test prior to installation in the plant. After installation in the plant, a Site Acceptance Test (SAT) will be conducted. The SAT will include several tests:

computer accuracy, analog input accuracy, calculated value accuracy, computer performance, system response times, all input/output (from termination strip to display stations/printers), all data ports, and computer power supplies.

• In order to minimize the possibility of bad sensor inputs to the Safety Parameter Display System (SPDS) and/or inaccurate SPDS display of sensor inputs, routine instrument loop calibration of sensors that provide input to the SPDS will include verification that the SPDS-displayed values are correct. WBN's instrument surveillance instructions will incorporate these verifications.

Effect of plant computer failure on system functions The WBN Unit 2 is designed on the basis that it can still operate when the plant computer is

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date inoperable. The computer is not required for safe shutdown of the plant during external design basis events such as tornadoes, floods, rain, and transportation accidents. Operators are trained to respond to accidents both with and without the computer information available. The control room instrumentation provides the operators with the information necessary for safe reactor operations under normal, transient, and accident conditions.

The DAS is mechanically and electrically isolated from the safety systems to avoid degradation of the systems should the computer and/or DAS fail.

The computer is not expected to perform any nuclear safety-related function, therefore, the computer need not be designed to meet nuclear safety-related Class 1E, single-failure criteria.

The computer is not designed to safety system criteria and therefore is not to be used to perform functions essential to the health and safety of the public.

165 7.2 7.2 FSAR section 7.2.2.3.2, last paragraph of this section Responder: Clark 145. Closed Closed ML101720589, TVA Letter EICB (Garg) has been deleted. The basis for this deletion is that Item No. 17 dated 10/5/10 discussion regarding the compliance with IEEE-279, The reference to Section 7.2.2.2 for the general Response provided in letter 1971 and GDC 24 is covered in section 7.2.2.2. discussion for control and protection interactions dated 10/5/10 However, there is no reference to this section in is provided in Section 7.2.2.3. The reference in 7.2.2.3.2 to direct the reader to 7.2.2.2. Please revise Section 7.2.2.3 is applicable to all Sub-Section 7.2.2.2 accordingly. paragraphs, including 7.2.2.3.2. An additional reference in this section is not necessary and would be redundant to the Section 7.2.2.3 reference.

166 7.2 7.2 Changes to FSAR section 7.2.2.2(20) are justified Responder: Clark 146. Closed Closed ML101720589, TVA Letter EICB based on the statement that the integrated computer Item No. 18 dated 10/5/10 (Garg) system is implemented through EDCR 52322. Provide EDCR 52322 is contained in Attachment . Response provided in letter a copy of EDCR 52322 for staff review. dated 10/5/10 169 6/18/2010 Responder: Clark 147. Closed Closed EICB (Garg)

Describe the design changes which were made to Unit This is a duplicate of items 2, 10, 11 and 44 1 by 10CFR50.59 process and which significantly affect the instrumentation and controls systems discussed in FSAR Chapter 7.

170 6/17/2010 Responder: Clark 148. Closed Closed EICB (Garg)

TVA needs to document that Arnold Magnetics power This is a duplicate of item 113.

supplies have been used and environmentally qualified at Unit 1 and therefore meet the licensing basis for Unit 2. If these power supplies are not used and qualified in Unit 1, then TVA will have to discuss the qualification of these power supplies based on the guidance provided in RG 1.209 (Open Item # 2 of Eagle 21 audit.)

171 7.2 7.2 6/17/2010 Responder: Craig 149. Closed Closed EICB RAI TVA Letter Closed to SE Open Item EICB ML102910008 dated 10/21/10 (Garg) An external unidirectional communications interface The external Eagle 21 unidirectional Response provided in letter itemI#49 Enclosure 1 was installed between the Eagle 21 test subsystem communications interface will be tested prior to dated 10/21/10 Item No. 3

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Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date and the plant process computer. TVA should confirm WBN Unit 2 fuel load that testing has demonstrated that two way communication is impossible with the described configuration. (Open Item # 3 of Eagle 21 audit) 172 6/17/2010 Responder: Craig 150. Closed Closed EICB RAI EICB (Garg)

ML102910008 During a FAT diagnostic test, the Loop Calculation This is a duplicate of the rack 5 update issue item Item#50 Processor (LCP) failed while performing a parameter 114.

update. TVA should identify the cause and fix for the problem encountered. (Open Item # 1 of Eagle 21 audit) 174 6/28/2010 Responder: Hilmes/Craig 151. Closed Closed EICB RAI EICB (Garg)

ML102910008 Placeholder: The staff has identified questions Duplicate of 171 Item#52 regarding unidirectional communications interface.

The staff will keep this item open until TVA confirms testing has demonstrated that two way communication is impossible with the described configurations.

175 June 28, 2010 Responder: 152. Closed Closed EICB RAI EICB (Garg)

ML102910008 Placeholder: The staff has identified questions WCAP-13869 rev.2. is submitted in response to In FSAR amendment 98, This item is Item#53 regarding diversity. The staff will keep this item open item reference 6 added a new covered under until TVA provides the related WCAP to the staff for its WCAP-13869 rev.2. Has this item 78.

review and approval. WCAP been reviewed by the staff. If not then provide the TVA to provide copy of WCAP for staff review. date when information will be docketed.

177 7.5.2. 7.5.1 7/15/2010 Responder: Clark 153. Closed Closed N/A TVA Letter RAI not required EICB (Marcus) 1 dated 10/5/10 FSAR Amendment 99 Section 7.5.1.2 states: "Type A The type A variables are the same in Unit 1 and Response provided in letter 09/16/10 Variables Those variables that provide primary Unit 2. See calculation WBNOSG4047 Rev. 4 dated 10/5/10 information to the MCR operators to allow them to take (Attachment )

preplanned manually controlled actions for which no automatic action is provided and that are required for August 19, 2010 - TVA to safety systems to accomplish their safety functions for submit calculation.

Chapter 15 design basis events. Primary information is information that is essential for the direct Review of Unit 2 FSAR accomplishment of specified safety functions." confirms Unit 1 and Unit 2 Type A variables are the Clarify whether Unit 2 has the same Type A variables same.

as Unit 1.

Not necessary to docket WBNOSG4047.

178 7.5.2. 7.5.1 7/15/2010 Responder: Clark 154. Closed Closed N/A TVA Letter RAI not required EICB (Marcus) 1 dated 10/5/10 Please provide WBN-OSG4-047, "PAM Type A See response to item 177 above. Response provided in letter 09/16/10 Variable Determination." dated 10/5/10 August 19, 2010 - TVA to submit calculation.

Review of Unit 2 FSAR confirms Unit 1 and Unit 2 Type A variables are the same.

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date Not necessary to docket WBOSG4047.

179 An emphasis is placed on traceability in System Responder: WEC 155. Closed Closed N/A - Closed to NA EICB (Carte)

Requirements Specifications in the SRP, in the Item No. 142 unmodified IEEE std 830-1993, and even more so Steve Clark to look at how to combine traceability given the modifications to the standard listed in items.

Regulatory Guide 1.172, which breaks with typical NRC use of the word should regarding backwards Was addressed to during the 9/15 meeting and traceability to say Each identifiable requirement in an 9/20 - 9/21 audit.

SRS must be traceable backwards to the system requirements and the design bases or regulatory Closed to Item 142.

requirements that is satisfies Discuss how TVA has ensured that there is traceability (and particularly backward traceability) for each requirement. If requirements are not traceable, please explain how the SRS complies with the regulations that underlie the SRP.

180 The SRP, BTP 7-14, Section B.3.3.1 states that Responder: WEC 156. Closed Closed N/A - Closed to NA EICB (Carte)

Regulatory Guide 1.172 endorses, with a few noted Item No. 142 exceptions, IEEE Std 830-1993. IEEE Steve Clark to look at how to combine traceability TVA to provide Recommended Practices for Software Requirements items. date when Specifications. information will be Will be addressed to during the 9/15 meeting and docketed Clarify whether the WBU2 Post Accident Monitoring 9/20 - 9/21 audit.

Systems Software Requirements Specification adheres to IEEE std 830-1993 as modified by Closed to Item 142.

Regulatory Guide 1.172?

If yes, please provide an evaluation that includes an identification and description of all differences proposed from the modified standard. Please describe how the alternatives provide an acceptable method of complying with those regulations that underlie the corresponding SRP acceptance criteria.

If no then please provide an evaluation that includes an identification and description of all differences proposed from the acceptance criteria given in SRP ,

BTP 7-14, Section B.3.3.1. Please describe how the alternatives provide an acceptable method of complying with those regulations that underlie the corresponding SRP acceptance criteria.

181 An emphasis is placed on traceability in System Responder: WEC 157. Closed Closed N/A - Closed to NA EICB (Carte)

Requirements Specifications in the SRP, in the Item No. 142 unmodified IEEE std 830-1993, and even more so Steve Clark to look at how to combine traceability given the modifications to the standard listed in items.

Regulatory Guide 1.172, which breaks with typical NRC use of the word should to say Each identifiable Will be addressed to during the 9/15 meeting and requirement in an SRS must be traceable backwards 9/20 - 9/21 audit.

to the system requirements and the design bases or regulatory requirements that is satisfies Closed to Item 142.

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date Explain the source(s) of the requirements present in the Post Accident Monitoring Systems Software Requirements Specification. To clarify, many documents have requirements that are incorporated by reference into the SRS, but what served to direct the author to include those various documents in the SRS or, if the requirement is based on the System Requirements Specification, what directed the author to include the requirement there?

182 Characteristics that the SRP states that a Software Responder: WEC 158. Closed Closed N/A - Closed to NA EICB (Carte)

Requirements Specifications should have include Item No. 142 unambiguity, verifiability, and style, part of the latter is Steve Clark to look at how to combine traceability that Each requirement should be uniquely and items.

completely defined in a single location in the SRS.

Will be addressed to during the 9/15 meeting and Clarify whether the unnumbered paragraphs in the 9/20 - 9/21 audit.

Post Accident Monitoring Systems Software Requirements Specification, such as in the section Closed to Item 142.

headings, or are all such sections simply considered to be informative?

Does the same apply to documents referenced by the SRS? Such as WCAP-16096-NP-A, Rev. 1A, Software Program Manual for Common Q Systems, which is incorporated by reference in requirement R2.3-2 in the SRS.

R2.3-2 [The PAMS software shall comply with the requirements and guidelines defined in WCAP-16096-NP-A, Software Program Manual for Common Q Systems.]

If any requirements are expressed in such unnumbered paragraph form instead of individually identified requirements, please list them, describe why they satisfy the fundamental requirement of unambiguity, and describe how they were verified.

184 7/15/2010 Responder: WEC 159. Closed Closed N/A - Closed to N/A EICB (Carte)

Item No. 142 The NRC considers that a System Requirements Steve Clark to look at how to combine traceability Specification is the complete set of requirements used items.

for the design of the software, whether it is contained within one document or many. In order to evaluate an Will be addressed to during the 9/15 meeting and SRS against the guidance in the SRP the staff needs 9/20 - 9/21 audit.

access to all the requirements.

Closed to Item 142.

Are there any sources of requirements in parallel with the Post Accident Monitoring Systems Software Requirements Specification? Meaning does the SRS contain, explicitly or by reference, all the requirements that were used in the design phase for the application specific software, or do software design phase activities use requirements found in any other source or document? If so, what are these sources or documents?

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date 189 7.6.7 7/20/2010 Responder: Clark 160. Closed Closed RAI No. 3 TVA Letter EICB (Singh)

ML102980005 dated 10/5/10 FSAR Section 7.6.7States: Conformance with This is a typographical error. The correct Response provided in letter By FSAR 10/26/2010 Regulatory Guide 1.133, Revision 1 is discussed in reference is Table 7.1-1. The reference will be dated 10/5/10 Amendment 100, Table 7.1-7. FSAR Chapter 7 does not contain any corrected in FSAR Amendment 100. page 7.6-4.

such numbered table. Please explain. NNC 8/25/10: Acceptable response.

191 7.9 NUREG-0800 Chapter 7, Section 7.9, "Data Responder: Jimmie Perkins 161. Closed Closed ML10197016, TVA Letter EICB (Carte)

Communication Systems" contains review criteria for Item Nos. 1-3 dated 10/5/10 data communication systems. The WBN2 FSAR did WBN Unit 2 is in compliance with the regulatory Response provided in letter not include any description of data communications requirements for data communications systems dated 10/5/10 systems. as described in Attachment 34 (Data

1) Please identify all data communications systems. Communications Systems Description and NNC 8/25/10: Information

2) Please describe each data communications system Regulatory Compliance Analysis). received, and read.

identified above.

3) Please provide a regulatory evaluation of each data communications system against the applicable regulatory criteria.

192 7.5.1. 7.5.2 The NRC Staff is using SRP (NUREG-0800) Chapter 7 Responder: Clark 162. Closed Closed Item No. 1 sent TVA Letter EICB RAI ML1028618855 sent EICB (Marcus) 1 Section 7.5, Instrumentation Systems Important to to DORL dated 10/5/10 to DORL.

Safety, to review the WBU2 FSAR Section 7.5, 1. At WBN Unit 1 and 2, there is a single Response provided in letter NRC to issue 7/20/2010 Instrumentation Systems Important to Safety. The computer system named the Integrated dated 10/5/10 formal RAI to ML102010034.

following requests are for information that the SRP Computer System or ICS. That system is TVA. EICB RAI directs the reviewers to evaluate. sometimes described as the Plant Computer August 19, 2010 - NRC to ML102861885 System, the Process Computer, the Technical review TVA response. Item No. 1 The role of the EICB Technical reviewer is to Support Center Data System (TSCDS) or the determine if there is reasonable assurance that the Emergency Response Facility Data System TVA letter dated10/5/10 equipment will perform the required functions. The (ERFDS). At one time, the TSCDS and ERFDS Response 57 provided WBU2 FSAR, Section 7.5.2, Plant Computer System, were separate computers on Unit 1 but their information.

does not contain any description of the equipment that functions were all incorporated into the ICS when performs the functions described in the section. it was installed.

Enclosure 1 Item 3 of letter dated March 12, 2010, TVA stated that the platform of the Process 2. The Watts Nuclear Plant ICS is a non-safety Computer was, Hewlett Packard RX2660 and Dell related system, is designed as a single, large-Poweredge R200 servers with RTP Corp 8707 I/O. In scale nuclear plant computer system which addition TVA provided (a) two pages of marketing integrates balance of plant (BOP) monitoring with literature by DELL on the Poweredge R200 Server, (b) extensive nuclear steam supply system (NSSS) the HP Integrity rx2660 Server Unser Service Guide, application software into a comprehensive and (c) the Integrated Computer System Network computer based tool for plant operations. The Configuration Connection Diagram (2-45W2697-1-1 system is comprised of the following major dated 8/27/09). This provided information is not components:

sufficient for evaluating whether the equipment will,

• Remote multiplexers in the Computer Room, with reasonable assurance, perform the functions Auxiliary Instrument Room and 480V Board described in the FSAR. rooms.

• Redundant Central Processing Units (CPUs)

1) Is the Plant Computer System another name for

• Data Storage Devices the Process Computer?

• Man-Machine Interfaces (MMI) - Satellite Display Stations (SDS) terminals in the Main

2) Please provide an architectural description of the Control Room (MCR), Technical Support Center Plant Computer System. (TSC) and Computer Room.

• Networking equipment including switches,

3) Please describe the relationship between the Plant firewalls and terminal servers Computer System and the Integrated Computer

• Printers

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date System.

• Data Links to other plant computer devices (serial and network)- These systems or devices include but are not limited to:

o System Foxboro I/A Systems (unit 2 only) o Areva Beacon core monitoring systems o Multi-pen recorders o Landis & Gyr switchyard monitoring system o Computer Enhanced Rod Position Indication (CERPI) o Eagle 21 o Ronan Annunciator o Leading Edge Flow Meter (LEFM) o Bentley-Nevada vibration monitoring system o Inadequate Core Cooling Monitor (ICCM) (unit 1 only) o Common Q (unit 2 only) o WINCISE (unit 2) o Plant Engineering Data System (PEDS)

In support of normal plant operations, each units ICS:

• Scans and converts analog and digital plant process inputs to engineering units for displaying, alarming and reporting.

• Receives analog and digital inputs as pre-processed values from other digital systems for displaying, alarming, archiving, and reporting.

• Performs data validity checking.

• Performs calculations to obtain parameters such as difference, flows, and rates.

• Displays alarms when data point value exceeds predefined set points.

• Displays alarms received from the digital Annunciator system.

• Generates periodic station logs and pre-selected special logs.

• Performs BOP and NSSS related calculations.

• Provides graphical and digital trending displays of plant data.

• Provides graphical P&ID type displays of plant data.

In support of emergency plant operations each units ICS:

• Provides plant emergency support with the Safety Parameter Display System (SPDS) functions based upon the Westinghouse Owners Group CSF status trees and historical data collection, storage, and retrieval functions required to support NUREG-0737 and NUREG-0737, Supplement 1 category 1 variables (except for containment isolation).

• Provides SPDS and Emergency Response Data System (ERDS) data to the Emergency Offsite Facilities via PEDS.

• Provides BISI functions (not including operating and trip bypasses of RPS and ESFAS).

• Provides continuous monitoring of RHR system

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date performance when RHR is in use.

ICS is not required to be safety-related and is not required to meet IEEE single-failure criteria for Class 1E equipment.

3. The Plant Computer System and the Integrated Computer System are the same system.

193 7.5.1. 7.5.2 The WBU2 FSAR, Section 7.5.2, Plant Computer Responder: Clark 163. Closed Closed Item No. 2 sent TVA Letter EICB RAI ML1028618855 sent EICB (Marcus) 1 System, contains three subsections, to DORL dated 10/5/10 to DORL.

7.5.2.1, Safety Parameter Display System There is a single set of hardware that Response provided in letter NRC to issue 7/20/2010 7.5.2.2, Bypassed and Inoperable Status Indication incorporates the functionality of Safety Parameter dated 10/5/10 formal RAI to ML102010034 System (BISI) Display System (SPDS), Bypass and Inoperable TVA. EICB RAI 7.5.2.3, Technical Support Center and Nuclear Data Status Indication System (BISI) and the Technical TVA letter dated 10/5/10 ML102861885 Links Support Center (TSC). Responses 58 and 67 Item No. 2 provided information.

Are there three separate sets of hardware that Also refer to the response to item 59 (RAI Matrix implement these functions, or are these three functions Item 193).

that are implemented on a single set of hardware?

The function of the Nuclear Data Links or Emergency Response Data System (ERDS) is actually provided by the TVA Central Emergency Control Center (CECC) which acts as the Emergency Offsite Facility (EOF) for all of TVAs nuclear units. Plant data will be sent on a periodic basis from the ICS to the CECC via the Plant Engineering Data System (PEDS). That data is then available to be sent from the CECC to the NRC.

194 7.5.1. 7.5.2. The WBU2 FSAR Section 7.5.2.1, Safety Parameter Responder: Costley/Norman 164. Closed Closed Item No. 3 sent TVA Letter EICB RAI ML1028618855 sent EICB (Marcus) 1.1 1 Display System, contains a description of the Safety to DORL dated 10/5/10 to DORL.

Parameter Display System. The principal purpose and function of the SPDS is Response provided in letter NRC to issue 7/20/2010 to aid control room personnel during abnormal dated 10/5/10 formal RAI to ML102010034 SRP Section 7.5, Subsection II, Acceptance Criteria and emergency conditions in determining the TVA. EICB RAI states: safety status of the plant and in assessing if TVA letter dated 10/5/10 ML102861885 Requirements applicable to the review of SPDS10 abnormal conditions require corrective action by Response 59 provided Item No. 3 CFR 50.55a(a)(1), Quality Standards. the operators to avoid a degraded core. It also information.

operates during normal operations, continuously Please provide a description of how SPDS meets this displaying information from which the plant safety regulatory requirement. status can be readily and reliably accessed.

To ensure quality, the design, testing, and inspection of the SPDS is controlled by qualified personnel and by using TVA procedure SPP-2.6, Computer Software Control. The procedure details controls and processes required for the development, modification, and configuration management of computer software used to support the design, operation, modification, and maintenance of TVAs nuclear power plants consistent with the Nuclear Quality Assurance Plan.

This ensures that the design and operation of the SPDS complies with the 10 CFR 50.55a(a)(1) quality standards requirements. The controls and processes outlined in the procedure provide assurance that the SPDS will perform its intended

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date function correctly.

The plant Integrated Computer System(ICS) provides the SPDS for WBN. Any changes to the SPDS software must be documented and controlled using a Software Service Request(per SPP-2.6) and must be implemented under the engineering design change process(Design Change Notice, DCN). Controls in SPP-2.6 guide the development and testing of the SPDS changes.

Other controls put in place by this procedure to further maintain quality standards are:

• Changes to SPDS software from remote locations is prohibited.

• The application custodian implements controls to prevent unauthorized changes to the software.

• Changes are made in a non-production environment and validation testing takes place before the change is installed on the ICS.

• Once validation testing begins, the source code is placed under configuration control.

• When the modifications are installed on the ICS, an operability test is performed to demonstrate that the software is installed correctly and is functioning correctly in its operating environment.

• All documentation related to the SPDS software changes are QA records.

• The software source code is kept in a physically secure, environmentally controlled space to prevent inadvertent changes.

• Cyber security considerations are also considered in the storage environment.

The data goes through several validation steps before being presented to the operators. When redundant sensors are used, the data received by the computer can be processed by software to determine if the quality of one or more points is questionable.

195 7.5.1. 7.5.2. Bypassed and Inoperable Status Indication (BISI) Responder: Costley/Norman 165. Closed Closed Item No. 4 sent TVA Letter EICB RAI ML1028618855 sent EICB (Marcus) 1.2 2 to DORL dated 10/5/10 to DORL.

The WBU2 FSAR Section 7.5.2.2, Bypassed and The BISI system is a computer based system that Response provided in letter NRC to issue 7/20/2010 Inoperable Status Indication System (BISI), contains a provides automatic indication and annunciation of dated 10/5/10 formal RAI to ML102010034 description of the Bypassed Inoperable Status the abnormal status of each ESFAS actuated TVA. EICB RAI Indication System (BISI). component of each redundant portion of a system TVA letter dated 10/5/10 ML102861885 that performs a safety-related function. Response 60 provided Item No. 4 SRP Section 7.5, Subsection II, Acceptance Criteria information.

states: To ensure quality, the design, testing, and Requirements applicable to bypassed and inoperable inspection of the BISI system is controlled by status indication 10 CFR 50.55a(a)(1), Quality qualified personnel and by using TVA procedure Standards. SPP-2.6, Computer Software Control. The procedure details controls and processes required Please provide a description of how BISI meets this for the development, modification, and regulatory requirement. configuration management of computer software used to support the design, operation, modification, and maintenance of TVAs nuclear

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date power plants consistent with the Nuclear Quality Assurance Plan.

This ensures that the design and operation of the BISI System complies with the 10 CFR 50.55a(a)(1) quality standards requirements. The controls and processes outlined in the procedure provide assurance that the BISI system will perform its intended function correctly.

The plant Integrated Computer System(ICS) provides the BISI system for WBN. Any changes to the BISI software must be documented and controlled using a Software Service Request(per SPP-2.6) and must be implemented under the engineering design change process(Design Change Notice, DCN). Controls in SPP-2.6 guide the development and testing of the BISI changes.

Other controls put in place by this procedure to further maintain quality standards are:

• Changes to BISI software from remote locations is prohibited.

• The application custodian implements controls to prevent unauthorized changes to the software.

• Changes are made in a non-production environment and validation testing takes place before the change is installed on the ICS.

• Once validation testing begins, the source code is placed under configuration control.

• When the modifications are installed on the ICS, an operability test is performed to demonstrate that the software is installed correctly and is functioning correctly in its operating environment.

• All documentation related to the BISI software changes are QA records.

• The software source code is kept in a physically secure, environmentally controlled space to prevent inadvertent changes.

• Cyber security considerations are also considered in the storage environment.

196 7.5.1. 7.5.2. Bypassed and Inoperable Status Indication (BISI) Responder: Costley/Norman 166. Closed Closed Item No. 5 sent TVA Letter EICB RAI ML1028618855 sent EICB (Marcus) 1.2 2 to DORL dated 10/5/10 to DORL.

The NRC staff is performing its review in accordance Section C of the Regulatory Guide lists the Response provided in letter NRC to issue 7/20/2010 with LIC-110, Rev. 1, Watts Bar Unit 2 License following six regulatory positions for guidance to dated 10/5/10 formal RAI to TVA ML102010034 Application Review. LIC-110 directs the staff to satisfy the NRC requirements with respect to the EICB RAI review systems unique to Unit 2 in accordance with bypassed and inoperable status indication(BISI) TVA letter dated 10/5/10 ML102861885 current staff guidance. Regulatory Guide (RG) 1.47 for nuclear power plant safety systems: Response 61 provided Item No. 5 Revision 1, Bypassed and Inoperable Status information.

indication for Nuclear Power Plant Safety Systems, is 1. Administrative procedures should be the current regulatory guidance for BISI. Please supplemented by an indication system that provide a regulatory evaluation of BISI against the automatically indicates, for each affected safety current RG. system or subsystem, the bypass or deliberately induced inoperability of a safety function and the systems actuated or controlled by the safety function. Provisions should also be made to allow the operations staff to confirm that a bypassed safety function has been properly returned to

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date service.

Response: The BISI system provides indication(displays and annunciation) that a functional path for each train of a safety system or support system has been rendered in a state which could cause inoperability. The BISI system monitors and provides system level alarms for these plant safety-related systems:

• Main and Aux Feedwater

• Safety Injection

• Residual Heat Removal

• Containment Spray

• Emergency Gas Treatment

• Essential Raw Cooling Water

• Chemical and Volume Control

• Ventilating

• Component Cooling

• Control Air( including Aux Control Air)

• Standby Diesel Generator The system level displays/indicating lights indicate the status of each systems train functional path as well as the status of any support system that might put the system in an inoperable or bypassed condition.

The BISI system software runs on the Integrated Computer System(ICS) and it provides the capability to monitor in real time the parameters required to provide a BISI system as described in the Reg Guide.

The system level display or indicating lights indicate NORMAL status when a previously bypassed system returns to normal operational status. The Operations staff will determine the impact of each alarm on the process flow path indication during plant modes of operation. The final decision of system operability is left up to the Operations staff to determine per Technical Specifications.

2. The indicating system for BISI should also be activated automatically by the bypassing or the deliberately induced inoperability of any auxiliary or supporting system that effectively bypasses or renders inoperable a safety function and the systems actuated or controlled by the safety function.

Response: The Integrated Computer System(ICS) obtains real-time plant parameter information system by continuously scanning pre-assigned analog, pulse, and contact sensors located throughout the plant to provide status information to the BISI system and automatically displays that information on the BISI terminals in

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date the Main Control Room. Alarms are also initiated to gain the Operations staffs attention.

3. Annunciating functions for system failure and automatic actions based on the self-test or self-diagnostic capabilities of digital computer-based I&C safety systems should be consistent with Positions 1 and 2.

Response: The data goes through several validation steps before being presented to the operators. When redundant sensors are used, the data received by the computer can be processed by software to determine if the quality of one or more points is questionable.

4. The bypass and inoperable status indication system should include a capability for ensuring its operable status during normal plant operation to the extent that the indicating and annunciating functions can be verified.

Response: The BISI system is designed to operate during all normal plant modes of operations including startup, shutdown, standby, refueling, and power operation. The ICS is designed to provide a very high degree of reliability and the accuracy of the displayed data is not significantly less than the accuracy of comparable data displayed in the Main Control Room.

5. Bypass and inoperable status indicators should be arranged such that the operator can determine whether continued reactor operation is permissible. The control room of all affected units should receive an indication of the bypass of shared system safety functions.

Response: A system level display via the BISI display or indicating lights is provided to the operators to indicate the status of the systems being monitored as well as any support systems.

If an alarm condition exists, additional detailed information is provided to the operations staff so as to allow determination of the abnormal condition. The information provided will identify to the Operations staff the exact nature of the initiating condition for the abnormal alarm. Each BISI system point will allow the user to access a detailed system screen.

These indicators and alarms will provide critical information to help the operations staff determine whether continued reactor operation is/is not permissible. As stated previously, the final decision of system operability/inoperability is left to the Operations staff to determine per Technical Specifications.

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Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date

6. Bypass and inoperable status indicators should be designed and installed in a manner that precludes the possibility of adverse effects on plant safety systems. The indication system should not be used to perform functions that are essential to safety, unless it is designed in conformance with criteria established for safety systems.

Response: The BISI system is not designed to safety system criteria and therefore is not to be used to perform functions essential to the health and safety of the public, nor are operator actions based solely on BISI indications.

Appropriate electrical and physical isolation from safety-related equipment to the non-safety system is provided to meet the requirements identified in the FSAR. The ICS is independent of existing sensors and equipment in safety-related systems.

Independence is achieved through qualified safety-related Class 1E isolators. The ICS is also isolated to preclude electrical or electronic interference with existing safety systems.

Inputs and outputs are isolated from the plant inputs such that normal faults on the plant side of the loops will have no adverse impact on the ICS other than loss of the one circuit with the fault.

The inputs/outputs meet the isolation requirements of Watts Bar Design Criteria WB-DC-30-4, Separation/Isolation, which defines the design requirements for electrical separation/isolation of the distribution equipment and wiring for Class 1E electrical systems and components in the plant.

197 X Open Item 197 was never issued. 167. Closed Closed 198 7.5.1. 7.5.2. SRP Section 7.5, Subsection III, Review Procedures Responder: Costley/Norman 168. Closed Closed Item No. 6 sent TVA Letter EICB RAI ML1028618855 sent EICB (Marcus) 1.2 2 states: Recommended review emphasis for BISI to DORL dated 10/5/10 to DORL.

F. Scope of BISI indications - As a minimum, BISI F. The scope of the WBN BISI indications are Response provided in letter NRC to issue 7/20/2010 should be provided for the following systems: based on engineering calculation dated 10/5/10 formal RAI to TVA ML102010034

- Reactor trip system (RTS) and engineered safety WBPEVAR8807025 Rev. 7 (Attachment 10). This EICB RAI features actuation system (ESFAS) - See SRP calculation has not been updated for Unit 2. The TVA letter dated 10/5/10 ML102861885 Appendix 7.1-B subsection 4.13, Indication of calculation does include Common and Unit 2 Response 62 and Item No. 6 Bypasses, and SRP Appendix 7.1-C subsection 5.8.3, equipment required to support Unit 1 operation. Attachments 10 and 35 Indication of Bypasses. G. Compliance to Regulatory Guide 1.47 is provided information.

- Interlocks for isolation of low-pressure systems from described in design criteria document WB-DC the reactor coolant system - See SRP BTP 7-1. 29 Rev. 8, Integrated Computer System

- ECCS accumulator isolation valves - See SRP BTP (submitted under TVA letter dated August 11, 7-2. 2010 (Reference 1)) which is a design input to

- Controls for changeover of residual heat removal calculation WBPEVAR8807025 Rev. 7.

from injection to recirculation mode - See SRP BTP 7- H. Design criteria document WB-DC-30-29 Rev.

6. 8, Integrated Computer System submitted under G. Conformance with Regulatory Guide 1.47, TVA letter dated August 11, 2010 (Reference 1))

Bypassed and Inoperable Status Indication for section 3.4.1, BISI Design and Operation states:

Nuclear Power Plant Safety Systems. The BISI shall not be designed to safety related H. Independence - See SRP Appendix 7.1-B system criteria and therefore is not to be used to

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date subsection 4.7, Control and Protection System perform functions essential to the health and Interaction, and SRP Appendix 7.1-C subsections 5.6, safety of the public. Class 1E isolation is required, Independence, and 6.3, Interaction Between the however, to maintain the independence of safety Sense and Command Features and Other Systems. related equipment and systems.

The indication system should be designed and I. Development of the Bypassed and Inoperable installed in a manner that precludes the possibility of Status Indication (BISI) application of the adverse effects on plant safety systems. Failure or Integrated Computer System (ICS) is performed bypass of a protective function should not be a in accordance with NPG SPP 2.6, Computer credible consequence of failures occurring in the Software Control, Rev. 12 (Attachment 35). The indication equipment, and the bypass indication should development process starts with classifying the not reduce the required independence between application depending on how the output of the redundant safety systems. software will be used. BISI software is currently I. Use of digital systems - See SRP Appendix 7.0-A classified as category C in accordance with .

and Appendix 7.1-D. Appendix B which defines Category C as:

Please provide a description of how BISI meets each Application Software Categories item above, or provide appropriate justification for not Category Description doing so.

C Software and data which are an integral part of a quality-related but not safety-related plant system or component and are essential to the performance of that function.

Software, portions of software, and data essential to the implementation of quality-related programs listed in Section 5.1.B of the Nuclear Quality Assurance Plan, including software used to implement regulatory physical security requirements.

Software and data which implements NQAP requirements but not specifically identified as an augmented quality-related program as defined in Section 5.1.B of the NQAP.

Software, not associated with a specific plant system, which stores, maintains, controls, distributes or manages data which can be used without further verification in activities which affect safety- or quality- related plant structures, systems, and components.

Software, portions of software, and data which are an integral part of a non safety-related, non-quality related plant system or component whose failure would significantly impact plant operations.

Software used in the design of non quality-related, non safety-related plant structures, systems, and components Based on category C classification, SPP 2.6, Annex C defines the documentation that is required for the software..

For BISI, a Software Requirements Specification (SRS) based on the engineering calculation will be generated along with a Software Design Description. A Software Verification and

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date Validation Report (SVVR) consisting of a Validation Test and results and an Operability Test and results will be prepared. User documentation for BISI will be incorporated into the overall ICS user documents.

Future changes to BISI will be driven foremost by changes to the engineering calculation that defines the overall functionality of the system.

Any changes to the engineering calculation will cause a Software Services Request (SSR) to be generated. Depending on the scope of the change, the various documents (SRS, SDD, SVVR and user documentation) will be updated or re-issued.

199 7.5.1. 7.5.2. The WBU2 FSAR Section 7.5.2.3, Technical Support Responder: Costley/Norman 169. Closed Closed Item No. 7 sent TVA Letter Related SE Section 7.5.5.3 EICB EICB (Marcus) 1.3 3 Center and Nuclear Data Links, contains a description to DORL dated 10/5/10 RAI ML1028618855 sent to of the Technical Support Center and Nuclear Data The Technical Support Center is intended to be Response provided in letter NRC to issue 7/20/2010 DORL.

Links. an accident mitigation support center and dated 10/5/10 formal RAI to TVA ML102010034 provides Satellite Display Stations (SDS) capable EICB RAI SRP Section 7.5, Subsection II, Acceptance Criteria of displaying information on plant systems for Unit TVA letter dated 10/5/10 ML102861885 states: 1, Unit 2 or the Simulator. Stations in the TSC Response 63 provided Item No. 7 Requirements applicable to the review ofERF receive data from the plant Integrated Computer information.

information systems, and ERDS information systems System (ICS) over the ICS network. Separate 10 CFR 50.55a(a)(1), Quality Standards. PCs receive data from the simulator computer over the WBN site network to support drills and Please provide a description of how the nuclear data training exercises. Those PCs can also access links meets this regulatory requirement. the Plant Engineering Data System (PEDS) as a backup to ICS. The TSC also has a separate computer that connects to the CECC to allow additional access to meteorological station.

The ICS data is also transmitted from the PEDS server through the PEDS Firewall over the WBN Site Network to the CECC computers (Chattanooga). The CECC computers transmit the data over the TVA Corporate Network, through the TVA Firewall (provided by NRC),

through the NRC Firewall to the NRC.

Transmission of this data from the ICS and Meteorological Station over data link (High Speed Communications Link) to the CECC and NRC meet the requirements of NUREG-0696, Functional Criteria for Emergency Response Facilities and NUREG-1394, Emergency Response Data System Implementation.

203 7.5.1. 7.5.2 7/26/2010 Responder: Clark 170. Closed Closed EICB RAI TVA Letter EICB RAI ML102861885 sent to EICB (Marcus) 1 ML102861885 dated 10/5/10 DORL By letter dated April 27, 2010 (ML101230248), TVA The plant computer system is one set of Response provided in letter NRC to issue Item No. 9 stated (Enclosure Item No.19): "The WBN Unit 2 hardware. The Safety Parameter Display dated 10/5/10 formal RAI to TVA Integrated Computer System(ICS) modification merges System, Bypassed and Inoperable Status the ERFDS and plant computer into a single computer Indication System (BISI), Technical Support TVA letter dated 10/5/10 network." Center and Nuclear Data Links are all functions Response 67 provided of the Plant Computer System. Historically the information.

FSAR Section 7.5.2, "Plant Computer System," has Westinghouse P2500 Plant Process Computer three subsections: and Emergency Response Facilities Data System 7.5.2.1, "Safety Parameter Display System" (ERFDS) were individual systems but were

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date 7.5.2.2, "Bypassed and Inoperable Status Indication merged together with the implementation of DCN System (BISI)" 39911-A, implemented for WBN Unit 1 in 7.5.2.3, "Technical Support Center and Nuclear Data December 1998, to become the Plant Integrated Links" Computer System (ICS). A similar system is being This arrangement implies that the each of these installed for WBN Unit 2 based on the same function are part of the plant computer, and not a software with more modern hardware.

separate sets of equipment. Please describe the equipment for each function and identify any The ICS is composed of a number of pieces of equipment common to more than one function. hardware, all utilized as a system, to provide the functions listed in the FSAR sections 7.5.2.1, 7.5.2.2 and 7.5.2.3. This hardware includes but is not limited to Hewlett Packard (HP) servers (CPU), DELL servers (CPU), Fiber Optic Panels, Fiber Optic Converters, Switches, Firewalls, Network Taps, Multiplexors (RTP), LCD displays and fiber optic and copper Ethernet cables. As all the applicable hardware make up the system it is all common to more than one function and there is no separate set of equipment for any of the functions referenced in FSAR Section 7.5.2.1 and 7.5.2.2.

The Nuclear Data Link and EOF functions described in 7.5.2.3 are provided by the CECC in Chattanooga. In order for the CECC to have access to ICS data, both the PEDS and the data diode isolating the PEDS from the ICS must be operational.

Meteorological data from the Environmental Data Station (EDS) is gathered by the Unit 1 ICS.

That data is sent over to the unit 2 ICS via the inter-unit firewall.

204 7.5.1. 7.5.2 7/26/2010 Responder: Costley/Norman 171. Closed Closed EICB RAI TVA Letter EICB RAI ML102861885 sent to EICB (Marcus) 1 NRC to issue ML102861885 dated 10/5/10 DORL By letter dated March 12, 2010 (ML101680577) TVA 1. Three data diodes. Response provided in letter formal RAI to TVA Item No. 10 provided drawing No. 2-45W2697-1-1, "Integrated 2. Two provide an interface between train A and B dated 10/5/10 Computer System Network Configuration Connection of Common Q.

Diagram," that depicts three "Data Diodes. Please a. These are identical systems consisting of the 10/5/10 TVA letter Response provide a detailed description of the equipment, following: 68 provided information.

software, and configurations of each "Data Diode". i. Dual DELL R200 computers ii. Red Hat Enterprise Linux software that is Response is acceptable.

locked down by CTI iii. 55 Mbs Owl cards iv. Fiber optic Ethernet interface to trained Maintenance test panel

b. Software is configured to allow only specific traffic from the MTP to pass through to the ICS

c. The secure side of the data diode will initiate the connection to the MTP, so there will be a bidirectional connection between the secure side of the data diode and the MTP. There will be no bidirectional data flow from the ICS to the MTP since the diode will block all incoming traffic from the ICS.

3. The third data diode is placed between the two ICS systems and the two PEDS computer systems.

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Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date

a. Hardware is identical to that used by TVA in other plants

i. Dual HP DL360GS computers ii. Red Hat Enterprise Linux software that is locked down by CTI iii. 155 Mbs OWL cards iv. RJ45 Ethernet to PEDS network

b. Diode is configured to allow certain types of data to flow from the ICS network to the PEDS network. This includes but is not limited to the following:

i. Once per second current values and qualities for all points ii. History data archived by the ICS iii. Data files

c. The data diode does not allow any data to be transferred between the PEDS network and the ICS network.

205 7/26/2010 Responder: Clark 172. Closed Closed EICB RAI TVA Letter Question B related to prior NRC EICB (Garg)

ML102910008 dated 10/5/10 approval of this system or 50.59 Regarding the Foxboro Spec 200 system installed at As discussed at the August 3 and 4 meeting in Response provided in letter TVA to respond or Item#22 information. This question will Unit 2: Knoxville between TVA and the NRC, the dated 10/5/10 provide proposed be addressed in the August plant Foxboro Spec 200 is not a system. The Foxboro date of response. visit.

a- Is it similar to Unit 1? If not, identify the differences Spec 200 analog hardware is used to replace the 10/14 and evaluation of the acceptability of these differences. existing obsolete hardware with the same functions. There are no interconnections b- deleted between the analog loops unless such interconnections existed prior to the replacement.

c- For each system which is discussed in the FSAR This is strictly an analog to analog upgrade due to and utilizes the Spec 200 system, please provide the equipment obsolescence. The Foxboro hardware instrument logic diagram, loop/block diagram with is installed in existing cabinets which require reference to where the system is discussed in the modifications to accept the Foxboro hardware FSAR. racks.

a- A listing of the replacements and differences was previously provided as Attachment 1 to TVA letter to the NRC dated June 18, 2010. Within Unit 1, only portions of the AFW controls were replaced. In Unit 2 all safety-related analog loops were replaced. The Foxboro Spec 200 is a fully qualified industry standard for replacement of obsolete analog instrument and control loop hardware.

b- deleted c- c- The Foxboro Spec 200 hardware has not been installed. Therefore the revised drawings have not been issued. Based on this, EDCR excerpts for the logic diagrams and loop/logic drawings were provided as attachments to TVA letter to the NRC dated July 30, 2010. The cross reference between the functions upgraded as part of the Foxboro Spec 200 change is contained in Attachment 33.

206 7.5.1. 7.5.2EIC 7/27/2010 Responder: Clark 173. Closed Closed EICB RAI TVA Letter EICB RAI ML102861885 sent to B

1 (Mar c s) ML102861885 dated 10/5/10 DORL The NRC Requested a description of the plant (1) The Plant Computer is not just a computer Response provided in letter NRC to issue Item No. 11

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Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date computer and TVA provided: but is a system and is designated the Integrated dated 10/5/10 formal RAI to TVA (1) Dell marketing literature for Dell Poweredge R200 Computer System or ICS. The ICS is composed Server, which can be found on the internet of multiple computer CPUs, LCD displays, RTP WB-DC-30-29 Rev. 8 is (http://www.dell.com/downloads/global/products/pedge Multiplexer Assemblies, network fiber optic Enclosure 1 of TVA letter

/en/pe_R200_spec_sheet_new.pdf), and panels, fiber optic converters, Ethernet switches dated August 11, 2010 (2) HP Integrity rx2660 Server User Service guide and network taps previously described in items (ML102240382 letter and (edition 6), which has not yet been found on the 71, 81 and 82 above. For a detailed discussion of ML102240383 Enclosure 1).

internet, but many other editions have been found. the ICS functions refer to design criteria This information is not adequate for answering the document WB-DC-30-29 Rev. 8, Integrated 10/5/10 TVA letter Response question. (Note: TVA also provided a network Computer System submitted under TVA letter 70 provided information.

configuration connection diagram, which is necessary dated August 11, 2010.

but not sufficient.) Response is acceptable (2) As previously discussed in item 82, there is no Please provide a description of the plant computer: unique set of hardware for any specific function.

(1) Please include sufficient detail so that an evaluation can be made against the SRP acceptance criteria in SRP Section 7.7.

(2) Please identify the equipment (hardware and software) that performs each function described in the FSAR.

207 EIC July 27, 2010 Date: 174. Closed Closed B

(Cart Responder:

e)

Deleted by DORL 208 7.5.2. 7.5.1 7/27/2010 Responder: Clark 175. Closed Closed EICB RAI TVA Letter EICB RAI ML102861885 sent to EICB (Marcus) 1 ML102861885 dated 10/5/10 DORL By letter dated June 18, 2010 (ML101940236), TVA The notes provided with the table include the Response provided in letter NRC to issue Item No. 12 responded to an NRC request for additional change to the variable under 10 CFR 50.59. For dated 10/5/10 formal RAI to TVA See Item 302 which requests information. Enclosure 1 Item No. 6 of this letter ease of review, the other note references have more detailed information on this identified, for each PAM variable whether the variable been deleted for these variables and only the 10/5/10 TVA letter Response topic was: (1) implemented identically to Unit 1 and note dealing with the Unit 1 change has been 71 provided information.

reviewed by the NRC, (2) implemented identically to retained in the Notes column of the table excerpt.

Unit 1 but modified under 10 CFR 50.59 after it was The applicable notes are highlighted in the notes .

reviewed by the NRC, and (3) implemented in a list.

manner that is unique to Unit 2. There were sixteen variables modified under 10 CFR 50.59; please describe the changes that were performed under 50.59.

209 7.5.2. 7.5.1 7/27/2010 Responder: Clark 176. Closed Closed EICB RAI TVA Letter EICB RAI ML102861885 sent to EICB (Marcus) 1 ML102861885 dated 10/5/10 DORL By letter dated June 18, 2010 (ML101940236), TVA The first eight variables in question are primary Response provided in letter NRC to issue Item No. 13 responded to an NRC request for additional chemistry parameter. The parameters are the dated 10/5/10 formal RAI to TVA information. Enclosure 1 Item No. 6 of this letter same for both units, but in Unit 1, the sample is identified, for each PAM variable whether the variable obtained via the post accident sampling system, !0 /5/10 TVA letter Response was: (1) implemented identically to Unit 1 and while in Unit 2 the sample is obtained using a 72 provided information.

reviewed by the NRC, (2) implemented identically to grab sample via the normal sample system.

Unit 1 but modified under 10 CFR 50.59 after it was reviewed by the NRC, and (3) implemented in a The last variable was somewhat difficult to manner that is unique to Unit 2. There were nine characterize. The method of detection and the variables that were identified as both Unique to Unit 2 hardware manufacturer is the same in both units.

and identical to what was reviewed and approved on However, due to obsolescence some of the parts Unit 1. Please explain. are different than what is installed in Unit 1. The differences are described in Note 21 of the original response.

210 7.5.2. 7.5.1 B (M 7/27/2010 Responder: Clark 177. Closed Closed EICB RAI TVA Letter EICB RAI ML102861885 sent to 1 ar ML102861885 dated 10/5/10 DORL

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date By letter dated June 18, 2010 (ML101940236), TVA The design basis for Unit 2 is to match Unit 1 as 10/5/10 TVA letter Response NRC to issue Item No. 14 responded to an NRC request for additional closely as possible. This includes incorporating 73 provided information. formal RAI to TVA See Item 302 which requests information. Enclosure 1 Item No. 6 of this letter changes made to Unit 1 after licensing under 10 more detailed information on this identified, for each PAM variable whether the variable CFR 50.59. The changes in question fall into this Response provided in letter topic was: (1) implemented identically to Unit 1 and category and are described in the Notes for each dated 10/5/10 reviewed by the NRC, (2) implemented identically to variable in the original submittal.

Unit 1 but modified under 10 CFR 50.59 after it was reviewed by the NRC, and (3) implemented in a manner that is unique to Unit 2. There were seven variables that were identified as both identical to Unit 1 and changed under 10 CFR 50.59. Please explain.

215 7/29/2010 Responder: WEC 178. Closed Closed DORL (Poole)

By letter dated June 18, 2010, TVA provided a table Close this item showing the documents that had been completed and were available for staff review. In a conference call on July 27, 2010, TVA agreed to submit the requested documents on the docket. Please provide the schedule for submitting the documents.

218 7/6/2010 Responder: Clark 179. Closed Closed EICB RAI TVA Letter EICB (Garg)

ML102910008 dated 7/30/10 Provide copies excerpts of the EDCRs and DCNs that The excerpt of work order WO 08-813412-000 Attachment 8 contains the Item#56 provide the block and logic diagrams for the Foxboro provided with the June 18 letter did not contain required correct work order Spec 200 implementation. the information showing that the new type excerpt.

(Arnold) power supplies had been installed in the Unit 1 Eagle 21 system. Please provide the necessary pages of the work order to verify the installation of Arnold power supplies in the Unit 1 Eagle 21 System.

219 8/4/2010 Responder: TVA Licensing 180. Closed Closed EICB RAI EICB (Garg)

ML102910008 Transmit copy of February 8, 2008 FSAR Red-Line for A copy was hand carried by Mr. W. Crouch and Check what sent by Terry Item#57 Unit 2 letter with attachments [CD]. delivered to Stewart Bailey at the August 17 missing attachments.

meeting at NRC headquarters.

TVA Revised Response:

Attachment 6 contains the redline FSAR with attachments.

220 8/4/2010 Responder: Ayala 181. Closed Closed EICB RAI TVA Letter EICB (Garg)

ML102910008 dated 10/5/10 For Safety Related SSPS, submit letter justifying delta The Westinghouse ARLA latch attachment is Response provided in letter TVA to respond or Item#23 between U1 [utilizing ARs] & U2 [utilizing ARs and obsolete. In order to provide a latching relay for dated 10/5/10 provide proposed MDRs]. [Requires TS change ???] Unit 2 Solid State Protection System (SSPS), a date of response.

MDR latching relay must be used. MDR relays Are there any open issues?

are currently in use and shown to be reliable as Docket plant specific SSPS Slave Relays in other Westinghouse responses to the individual.

plants.

The Technical Specification (TS) Bases was updated in Amendment B to indicate acceptability of testing MDR ESFAS Slave relays on an 18-month interval based on the assessment done in WCAP-13878-P-A, Revision 2, Reliability Assessment of Potter & Brumfield MDR Series Relays.

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date An initial Unit 2 ESFAS SSPS Slave Relay Service Life and Contact Load study similar to that done in Unit 1 has been completed to show that Unit 2 satisfies the conditions of WCAP-13877-P-A, Revision 2, Reliability Assessment of Westinghouse Type AR Relays used as SSPS Slave Relays, and WCAP-13878, Revision 2, Reliability Assessment of Potter & Brumfield MDR Series Relays. The Contact Load study also identifies locations in which MDR relays are not acceptable for use.

221 7.7.1. 7.7.1. 8/4/2010 Responder: Trelease 182. Closed Closed EICB RAI TVA Letter EICB RAI ML102861885 sent to EICB (Marcus) 2 3 ML102861885 dated 10/5/10 DORL Submit EDCR Technical Evaluation for the source and The EDCR 52421 Source and Intermediate Response provided in letter NRC to issue Item No. 16 intermediate range updated electronics for Unit 2 Range, Scope and Intent, Unit Difference and dated 10/5/10 formal RAI to Technical Evaluations are contained in TVA.

Attachment 31 to 10/5 letter. 10/5/10 TVA letter Response 78 and Attachment 31 provided information.

223 8/4/2010 Responder: Clark 183. Closed Closed EICB RAI EICB (Garg)

ML102910008 Submit EDCR Technical Evaluation for Foxboro I/A Duplicate of item 233. Item#58 replacing obsolete non-safety related Foxboro H-Line analog electronics with a digital CDS. [selected single point failures being addressed in design]

224 7.5.1. 7.5.2 8/4/2010 Responder: Norman (TVA CEG) 184. Closed Closed EICB RAI TVA Letter EICB RAI ML102861885 sent to EICB (Marcus) 1 ML102861885 dated 10/5/10 DORL Mike Norman [TVA Computer Eng. Group] will check The Data diode to isolate the WBN Unit 1 and Response provided in letter NRC to issue Item No. 17 status of DCN/50.59 for Integrated Computer System Unit 2 ICS computers from the WBN PEDS dated 10/5/10 formal RAI to upgrade that will install the data diode between the computers will be installed in PIC 56278 as part of TVA.

WBN PEDS and the Unit 1 and Unit 2 ICS. DCN 54971. This DCN is scheduled for 10/5/10 TVA letter Response implementation in Spring 2011. This date was 80 provided information.

included in the Cyber Security Plan Implementation Schedules submitted to the NRC on July 23.

226 8/4/2010 Responder: TVA Licensing 185. Closed Closed N/A - TVA Letter See also Open Item Nos. 41 &

EICB (Carte)

Information dated 8/11/10 270.

Submit the Foxboro I/A segmentation analysis and ICS These documents were submitted under TVA NNC 8/25/10: Segmentation requested under Design Criteria documents on an expedited separate letter dated August 11, 2010. analysis has been received another open letter. Provide a date when the Segmentation analysis and read. Please describe item.

will be revised based on discussions at the meeting. why a failure or error will not propagate over the -peer-to-peer network, and cause more than one segment to fail.

228 8/4/2010 Responder: Clark 186. Closed Closed EICB RAI TVA Letter EICB ML102980066 dated 10/5/10 (Carte) Submit rod control system description N3-85-4003 The Rod Control System Description N3-85-4003 Response provided in letter Item No. 6 is contained in Attachment 21. dated 10/5/10 229 8/4/2010 Responder: Clark 187. Closed Closed EICB RAI TVA Letter EICB ML102980066 dated 10/5/10 (Carte) Submit Annunciator system description/design criteria Condition Status/Alarm Design Criteria Document Response provided in letter Item No. 7 WB-DC-30-21 is contained in Attachment 22. dated 10/5/10 230 8/4/2010 Responder: Webb 188. Closed Closed EICB RAI TVA Letter EICB ML102980066 dated 10/5/10 (Carte) Submit Foxboro I/A Procurement Specification The requested Foxboro I/A Procurement Response provided in letter Item No. 8 excerpts that provide system description information Specification is contained in Attachment 23. dated 10/5/10

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Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date 231 8/4/2010 Responder: Clark 189. Closed Closed EICB RAI TVA Letter EICB (Garg)

ML102910008 dated 10/5/10 Update FSAR Amendment 100 Section 7.1.1.2 markup FSAR section 7.1.1.2 is revised in FSAR Response provided in letter FSAR AMD 100 Item#27 based on discussion with Hukam Garg. Amendment 100 submitted to the NRC on TVA dated 10/5/10 letter to the NRC dated September 1, 2010 includes the requested clarifications.

232 8/4/2010 Responder: Clark 190. Closed Closed RAI No. 5 TVA Letter EICB (Singh)

ML102980005 dated 10/5/10 Submit EDCR Technical Evaluation for LPMS EDCR The EDCR 52418 Lose Part Monitoring Scope TVA provided 10/26/2010 and Intent, Unit Difference and Technical information in Att.

Evaluations are contained in Attachment 24 to 24 of 10/5 letter.

10/5 letter.

233 8/4/2010 Responder: Clark 191. Closed Closed EICB RAI TVA Letter EICB ML102980066 dated 10/5/10 (Carte) Submit EDCR Technical Evaluation for Foxboro I/A Foxboro I/A EDCRs 52378 and 52671 Scope and Response provided in letter Item No. 12 EDCR Intent, Unit Difference and Technical Evaluations dated 10/5/10 are contained in Attachment 25 to the 10/5 letter.

234 8/4/2010 Responder: 192. Closed Closed N/A - Duplicate N/A EICB Item (Carte) Bechtel to perform D3 analysis for Common Q PAMS Duplicate of Item 64 which will be incorporated into Westinghouse Licensing Technical Report.

235 8/4/2010 Responder: TVA Licensing 193. Closed Closed EICB RAI EICB ML102910008 (Garg) TVA to ensure Stewart Bailey is on cc: for all Chapter Stewart Bailey has been added to the standard Item#59 7 RAI response letters. response letter template used for Chapter 7 responses.

237 8/4/2010 Responder: Clark 194. Closed Closed EICB RAI TVA Letter EICB ML102980066 dated 10/5/10 (Carte) Submit EDCR Technical Evaluation for Annunciator The Annunciator EDCR 52315 Scope and Intent, Response provided in letter Item No. 13 EDCR Unit Difference and Technical Evaluations are dated 10/5/10 contained in Attachment 27 to 10/5 letter.

238 8/4/2010 Responder: Webb/Hilmes 195. Closed Closed N/A - Duplicate N/A EICB Item (Carte) Discuss with TVA adding a description of the Foxboro Duplicate of item 201 I/A system to chapter 7 of the FSAR.

239 8/4/2010 Responder: Hilmes 196. Closed Closed N/A - Meeting N/A EICB request (Carte) Plan a meeting with TVA the NRC and Westinghouse meeting held 8/17/10 to review Common Q PAMS documentation.

241 8/4/2010 Responder: Davies 197. Closed Closed RAI No. 10 TVA Letter EICB (Singh)

ML102980005 dated 10/5/10 Review CERPI WCAPs for system description CERPI was designed after Westinghouse stopped Response provided in letter TVA provided 10/26/2010 information to be submitted to the NRC. using WCAPs. The document that provides the dated 10/5/10 information in Att.

most detailed information is the CERPI System 29 of 10/5 letter.

Requirements Specification WN-DS-00001-WBT Rev. 2. The proprietary version of this document and the affidavit for withholding are contained in Attachment 29.

243 C B

(C 8/3/2010 Responder: WEC 198. Closed Closed N/A - Closed to N/A art Item No. 142

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date Section 8.2.1 of the Common Q SPM (ML050350234) WEC to address at the 9/15 meeting states that the System Requirements Specification (SysRS) includes the system design basis. Section Closed to Item 142 1.2, "System Scope," of the WBN2 PAM SysRS (ML101680578) includes a description of the PAMS design bases that does not meet the requirements of IEEE 603-199 Clause 4. Please provide a description of the PAMs design bases that conforms to the requirements of IEEE 603-1991 Clause 4.

249 8/8/2010 Responder: WEC 199. Closed Closed LIC-101 Rev. 3 Appendix B EICB (Carte)

Section 4, "Safety Evaluation" The SVVP in the SPM describes the V&V Close to previous items to provide the V&V states: "the information relied implementation tasks that are to be carried out. The Reports. upon in the SE must be acceptance criterion for software V&V implementation docketed correspondence."

is that the tasks in the SVVP have been carried out in their entirety. Documentation should exist that shows LIC-101 Rev. 3 states: "The that the V&V tasks have been successfully safety analysis that supports the accomplished for each life cycle activity group. Please change requested should include provide information that shows that the V&V tasks technical information in sufficient have been successfully accomplished for each life detail to enable the NRC staff to cycle activity group. make an independent assessment regarding the acceptability of the proposal in terms of regulatory requirements and the protection of public health and safety."

253 8/8/2010 Responder: Clark 200. Closed Closed TVA Letter Related to Open Item no. 83.

EICB (Carte) dated 10/5/10 TVA provided information by letter dated July 30, 2010 All AC160 modules used for the Common Q Response provided in letter TVA to respond or LIC-110 Rev. 1 Section 6.2.2 (ML102160349) - See Enclosure 1 Item No. 8 - that PAMS have been previously approved. The dated 10/5/10 provide proposed states: "Design features and some AC160 module contain FPGAs. For those original response listed all FPGAs when the date of response. administrative programs that are modules that have not been previously approved, request was only for components that had not unique to Unit 2 should then be please provide information to address regulatory been previously approved. reviewed in accordance with criteria for FPGAs. current staff positions" LIC-101 Rev. 3 Appendix B Section 4, "Safety Evaluation" states: "the information relied upon in the SE must be docketed correspondence."

254 8/10/2010 Responder: WEC 201. Closed Closed N/A - Request TVA Letter EICB (Carte) to make dated 10/21/10 Please make the following available in Westinghouse's Documents are available for review in the Response provided in letter documents Enclosure 1 Rockville office. Westinghouse Rockville office per WEC letter dated 10/21/10 available for Item No. 5 WBT-D-2268, NRC Access to Common Q audit.

WNA-PD-00056-WBT, Rev 1 Watts Bar Unit 2 NSSS Documents at the Westinghouse Rockville Office, Completion I&C Projects dated 8/16/10 (Reference 2).

As the indicated source of customer specific requirements for deliverables, as indicated in the project plan, this document may serve as one end of a thread audit, and may contain information relevant to evaluating the completeness of later requirements.

956080, Rev 1. Cabinet mounted electronics -

Inadequate core cool monitor (ICCM-86)

Believe this to be the source of the requirements or at least algorithms and justifications for RIVLIS.

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Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date NABU-DP-00014-GEN, rev 2 Design Process for Common Q Safety Systems. As it defines the scope of other documents we are reviewing, it may clarify what documents are expected to contain what information.

255 8/10/2010 Responder: WEC 202. Closed Closed N/A - Request TVA Letter EICB (Carte) to make dated 10/21/10 Please make the following available in Westinghouse's Documents are available for review in the Response provided in letter documents Enclosure 1 Rockville office. Westinghouse Rockville office per WEC letter dated 10/21/10 available for Item No. 6 The Reusable Software Elements Documents. These WBT-D-2268, NRC Access to Common Q audit.

contain requirements for the software. Documents at the Westinghouse Rockville Office, WNA-DS-01564-GEN, Rev 1. ; WNA-DS-00315-GEN, dated 8/16/10 (Reference 2).

Rev. 2 ; WNA-DS-01715-GEN, Rev 2 ; WNA-DS-01838-GEN, Rev. 3 ; WNA-DS-01839-GEN, Rev. 3 ;

WNA-DS-01840-GEN, Rev 2. ; WNA-DS-01841, Rev

2. ; WNA-DS-01842-GEN Rev 2.; WNA-DS-01845-GEN Rev. 1. ; WNA-DS-01846-GEN Rev. 2 ; WNA-DS-01847-GEN Rev. 0 ; WNA-DS-01848 Rev. 1. ;

WNA-DS-01849-GEN Rev. 2. ; WNA-DS-01994-GEN Rev. 0 ; WNA-DS-00306-GEN Rev. 5 ; WNA-DS-02065-GEN Rev. 2 ; WNA-DS-01505-GEN Rev. 0 Further documentation for application-specific type circuits and custom PC elements are indicated by the SRS to be in 00000-ICE-3238, Rev 5 ; 00000-ICE-30140, rev 4 and 00000-ICE-30152, Rev. 5 256 8/10/2010 Responder: WEC 203. Closed Closed N/A - Request TVA Letter EICB (Carte) to make dated 10/21/10 Please make the following available in Westinghouse's Documents are available for review in the Response provided in letter documents Enclosure 1 Rockville office. Westinghouse Rockville office per WEC letter dated 10/21/10 available for Item No. 7 WBT-D-2268, NRC Access to Common Q audit.

The following are documents that contain requirements Documents at the Westinghouse Rockville Office, used in the SRS which we incorporated by reference dated 8/16/10 (Reference 2).

within that document.

Coding Standards and Guidelines for Common Q Systems, 00000-ICE-3889, Rev. 10, Westinghouse Electric Company LLC.

Application Restrictions for Generic Common Q Qualification, WNA-DS-01070-GEN, Rev. 3, Westinghouse Electric Company LLC.

System Requirements Specification for the Common Q Generic Flat Panel Display 00000-ICE-30155, Rev.

9, Westinghouse Electric Company LLC.

Software Requirements Specification for the Common Q Generic Flat Panel Display Software, 00000-ICE-3239, Rev. 12, Westinghouse Electric Company LLC.

Common Q Software Configuration Management Guidelines, NABU-DP-00015-GEN, Rev. 2, Westinghouse Electric Company LLC, Standard General Requirements for Cyber security, WNA-DS-01150-GEN, Rev. 0, Westinghouse Electric Company LLC,

(

257 8/10/2010 Responder: WEC 204. Closed Closed N/A - Request N/A C

a

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date to make Please make the following available in Westinghouse's WEC Reviewing to ensure all documents are documents Rockville office. available in Rockville office. available for audit.

The following are documents that contain requirements used in the SRS which we incorporated by reference within that document.

AC160 CPU Loading Restrictions, AN03007Sp, ABB WBT-D-2268, 8/16/2010 Memo, ABB Process Automation Corporation, Software Design Description for the Common Q WEC still needs to make/confirm this document is Generic Flat-Panel Display Software, 00000-ICE- available.

30157, Rev. 16, Westinghouse Electric Company LLC.

System Requirements Specification for the Common WBT-D-2024, 6/9/2010 Q Post Accident Monitoring System, 0000-ICE-30156, Rev. 06, Westinghouse Electric Company LLC.

Software Requirements Specification for the WBT-D-2024, 6/9/2010 Common Q Post Accident Monitoring System 00000-ICE-3238, Rev. 5, Westinghouse Electric Company LLC.

WBT-D-2268, 8/16/2010 Commercial Dedication Report for QNX 4.25G for Common Q Applications, WNA-CD-00018-GEN, Rev.

3, Westinghouse Electric Company LLC, WBT-D-2268, 8/16/2010 Generic Common Q Software Installation Procedure, WNA-IP-00152-GEN, Rev. 7, Westinghouse Electric Company LLC.

258 8/10/2010 Responder: WEC 205. Closed Closed N/A - Request N/A EICB (Carte) to make Please make the following available in Westinghouse's WEC Reviewing to ensure all documents are documents Rockville office. available in Rockville office. available for audit.

The IV&V Phase Summary Report, (WNA-VR-00283-WBT Rev . 0 ) indicated that the IV&V team had created some information that may facilitate the approval process. However the form the information may have taken was not indicated or referenced in the Phase Summary Report. Information requested for the Rockville office includes:

-The excel spreadsheet described in section 2.2.2 that verifies all low level requirements have a basis in a higher one, and that all higher level requirements decompose into a lower level.

-A review of the WBU2 SysRS, SDS, and SRS for clarity, completeness, correctness and compatibility

-Comparison of the WBU2 SysRS, SDS, and SRS to source level documents

-An evaluation, per section 2.2.3, of the baseline report

-a second party peer review for the source level documents 259 8/10/2010 Responder: WEC 206. Closed Closed N/A - Request TVA Letter EICB to make dated 10/21/10 (Carte) Please make the following available in Westinghouse's Documents are available for review in the Response provided in letter documents Enclosure 1 Rockville office. Westinghouse Rockville office per WEC letter dated 10/21/10 available for Item No. 8

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date WBT-D-2268, NRC Access to Common Q audit.

As they may demonstrate that a number of issues Documents at the Westinghouse Rockville Office, raised by, or that will be raised by, the NRC staff are dated 8/16/10 (Reference 2).

already being resolved by the vendor, we would like to have access to V&V-769 and V&V-770 in the Exception Reports (ER) database for common Q systems.

260 8/10/2010 Responder: WEC 207. Closed Closed N/A - Request N/A EICB (Carte) to make Please make the following available in Westinghouse's WEC Reviewing to ensure all documents are documents Rockville office. available in Rockville office. available for audit.

The Source level documents for the requirements WBT-D-2268, 8/16/2010 WBT-TVA-0070 Safety Related Digital Logic Cards Circuitry and Related Instrument Racks Restrictions WBT-D-0088 Transmittal Westinghouse comments on WBT-D-2268, 8/16/2010 TVA specification EDSR 52451 Contract Number 65717 Tennessee Valley Authority WBT-D-2268, 8/16/2010 Watts Bar Nuclear Plant Unit 2 NSSS Completion Project WEST-WBT-2008-25 TVA Contract Word Hilmes to determine if this document can be Authorization provided.

261 8/10/2010 Responder: WEC 208. Closed Closed N/A - Closed to TVA Letter LIC-110 Rev. 1 Section 6.2.2 EICB (Carte)

Item No. 142 dated 8/20/10 states: "Design features and Please provide the Requirements Traceability Matrix WEC to make available in Rockville ASAP. May administrative programs that are for generic PAMS and/or any other RTMs applicable to require later submittal per 9/15 meeting. TVA Letter unique to Unit 2 should then be WBN2 PAMS. Some requirements in the Software dated 9/2/10 reviewed in accordance with Requirements Specification are simply not present in Closed to Item 142 current staff positions" the Watts Bar 2 PAMS specific RTM (WNA-VR-00279-WBT). LIC-101 Rev. 3 Appendix B Section 4, "Safety Evaluation" states: "the information relied upon in the SE must be docketed correspondence."

262 8/10/2010 Responder: WEC 209. Closed Closed N/A - Request N/A EICB (Carte) to make In order to facilitate visits to the Rockville office, please WEC Reviewing to ensure all documents are documents make the following documents available at the available in Rockville office. available for Rockville office. audit.

Watts Bar 2 PAMS licensing technical report 00000- WBT-D-1526, 01/28/10; WBT-D-2268, 8/16/10 ICE-37722 Rev. 0 (ML003733136)

Common Q Software Programming manual (ML050350234)

Common Q topical report. (ML031830959) 263 8/11/2010 Responder: WEC 210. Closed Closed ML101650255, EICB (Carte)

Based on an examination of document available at the Item No. 2 Westinghouse Rockville offices (i.e., NA 7.4, WEC 7.2, Addressed in 9/20 - 9/21 audit.

WEC 7.3, CDI-3803, & CDI-3722) a CDI appears to identify the verification activities for each critical Combine with item 138 after audit.

characteristic. These activities appear to be documented on the associated dedication data sheets; therefore, it appears that the Westinghouse Commercial Grade Dedication Plan is called a CDI and

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date the completed CDI data sheets are the commercial grade dedication Report. If so, please provide the CDI for each new (not previously approved) component and the associated completed dedication data sheets.

264 8/11/2010 Responder: WEC 211. Closed Closed ML101650255, EICB Item No. 2 (Carte) Please provide a copy of the commercial grade After the 9/20 - 9/21 audit.

survey(s) applicable to each new (not previously approved) Common Q component. Combine with item 138 after audit.

265 8/11/2010 Responder: WEC 212. Closed Closed ML101650255, EICB Item No. 2 (Carte) Please provide: After the 9/20 - 9/21 audit.

WNA-CD-00018-GEN Rev. 3 00000-ICE-35444 Rev. 1 Combine with item 138 after audit.

270 8/23/2010 Responder: Clark 213. Closed Closed See also Open Item Nod. 41 &

EICB (Carte) 245.

By letter dated June 18, 2009 (ML091560352) the Close to items 41 and 245 NRC informed Westinghouse that WNA-PT-00058-GEN (see pdf page 7 of 25) did not adequately address the test plan criteria of the Software Program Manual (ML050350234); however, by letter dated June 18, 2010 (ML101940236) TVA/Westinghouse stated that WNA-PT-00058-GEN addressed the test plan criteria of the SPM (pdf page 59 of 194, Item No. 12).

Please explain.

271 8/23/2010 Responder: WEC 214. Closed Closed N/A - Closed to NA EICB (Carte)

Item No. 142 By letter dated August 20, 2010 TVA docketed a 9/15 meeting and 9/20 audit Requirements Traceability Matrix for the Common Q PAMS (Requirements Phase).This document does not Closed to Item 142 identify the source of each requirement. The Common Q PAMS System Requirements Specification (SysRS -

ML101680578, ML102040483, & ML102040484) does not explicitly identify the origin of each requirement.

The SRP acceptance criteria for requirements specifications is that the origin of the requirements is know. Please explain how to trace each requirement in the SysRS to its origin.

272 7.5.2. 7.5.1 8/26/2010 Responder: Clark 215. Closed Closed EICB RAI TVA Letter EICB RAI ML102861885 sent to EICB (Marcus) 1 ML102861885 dated 10/21/10 DORL In WBN2 FSAR Table 7.5-2, "Regulatory Guide 1.97 The variable number will be changed to 19 in Response provided in letter NRC to issue Item No. 19 Enclosure 1 Variable List (Deviation and Justification for FSAR Amendment 101 as shown below: dated 10/21/10 formal RAI to Item No. 10 Deviations)," (WBNP-96) for Variable 19, TVA.

"Containment Hydrogen Concentration," Deviation 2 Table 7.5-2 (page 19 of 41), the variable number is listed as 15. TVA formal The variable number should be listed as 19. DEVIATION 2 response due 10/31/10 VARIABLE (1519)

Containment Hydrogen Concentration 273 7.5.2. 7.5.1 8/26/2010 Responder: Clark 216. Closed Closed EICB RAI TVA Letter EICB RAI ML102861885 sent to 1 EICB ML102861885 dated 10/5/10 DORL In WBN2 FSAR Table 7.5-2, "Regulatory Guide 1.97 Post accident samples will be obtained from the Response provided in letter NRC to issue Item No. 18 (Marcus) Variable List (Deviation and Justification for normal sample system. dated 10/5/10 formal RAI to TVA Deviations)," (WBNP-96) for Variable 97g, "Reactor

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date Coolant Sample Activity," Deviation 5 (page 21 of 41), 10/5/10 TVA letter Response the last two sentences of the Justification read, "TVA 95 provided information.

meets the intent of RG 1.97 recommended range by monitoring this variable using the gross activity analysis of primary coolant samples taken in the post accident sampling facility. Samples are obtained from the post accident sampling system in Unit 1 only."

Please describe how the samples are obtained for Unit 2.

274. 7.5.2. 7.5.1 8/26/2010 Responder: Clark 217. Closed Closed EICB RAI TVA Letter EICB RAI ML102861885 sent to EICB (Marcus) a 1 ML102861885 dated 10/21/10 DORL In WBN2 FSAR Table 7.5-2, "Regulatory Guide 1.97 The SC in the last sentence will be changed to Response provided in letter NRC to issue Item No. 21 Enclosure 1 Variable List (Deviation and Justification for SG in FSAR Amendment 101 as shown below: dated 10/21/10 formal RAI to Item No. 11 Deviations)," (WBNP-96) for Variable 82, "Steam TVA.

Generator Level Wide Range," Deviation 10 (page 24 SG wide range level indication is utilized as a of 41), in the last sentence, of the Justification, SC diverse variable to auxiliary feedwater (AFW) flow TVA formal should be SG. for gross indication of flow to the SGs. The WBN response due AFW monitors are Types A1 and D2. WBN's 10/31/10 position is that since SC SG wide range level is only used as a backup to redundant AFW flow monitors, it does not require redundancy 275 8/27/2010 Responder: Clark 218. Closed Closed Not Required N/A EICB (Singh)

Answer exists in Loose Parts Monitoring System: RG 1.133, sections TRM C.1.a and C.1.c address sensor locations and channel separation respectively. TR 3.3, FSAR section 7.6.7 and the DMIMMS-DX System Description do not clearly explain the location or address channel separation per the guidance of RG 1.133. Please update the documents as needed.

284 7.7.3 7.4.1 8/27/2010 Responder: Webber 219. Closed Closed EICB RAI No.14 TVA Letter This item is a follow-up question EICB ML102910017, dated 10/21/10 to item 123 Follow-up to item 123 Attachment 2 to the 10/20 letter contains the 10/19/10 Enclosure 1 (Darbali) electrical logic diagrams and required Drawing Item No. 18, Please provide a readable electrical logic diagram of Change Authorizations (DRAs). Attachment 7 the Volume Control Tank Level Control System.

286 7.7.3 9.3.4. 8/27/2010 Responder: Webber 220. Closed Closed EICB RAI No.16 TVA Letter EICB (Darbali) 2.4 ML102910017, dated 10/21/10 SE 7.7.3, Volume Control Tank Level Control System Low alarm is correct - the setpoint is above the Response is satisfactory. 10/19/10 Item No. 19 low-low interlock that opens the isolation valve, In FSAR section 9.3.4.2.4 a change was made to the mentioned earlier in the paragraph. Response provided in letter last paragraph of the Volume Control Tank description Editorial change to correct a typo. dated 10/21/10 (page 9.3-31 of the Amendment 97 redline), where the "low-low level alarm" was changed to "low level alarm".

Please explain if this deletion was an editorial change to correct a typo.

290 7.7 9/7/2010 Responder: Clark 221. Closed Closed N/A N/A This item is a duplicate of item EICB (Carte) 291.

The equation at the bottom of Amendment 99 page This item is a duplicate of item 291.

7.7-3 is wrong. There are two ways that this equation is inconsistent with the text above it.

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date 292 7.2.5 7.2 9/7/2010 Responder: Craig 222. Closed Closed EICB RAI TVA Letter EICB (Garg)

ML102910008 dated 10/21/10 FSAR Section 7.2, Steam Generator Reference Leg: The SG level transmitter reference legs are not Response provided in letter Due 10/31/10 Item#68 Enclosure 1 By letter dated July 27, 1994, TVA had withdrawn its insulated on Unit 1 and will not be insulated on dated 10/21/10 Item No. 22 commitment on Unit 1 to insulate SG reference leg. Unit 2. The analysis provided for Unit 1 is also TVA had provided an analysis to justify this action applicable to Unit 2. FSAR Section 7.2.1.1.2 (5) which was accepted by the staff. Confirm whether SG indicates that the Low-Low steam generator water reference leg in Unit 2 are insulated and if not then level trip protects the reactor from loss of heat confirm that the analysis which was submitted for Unit sink in the event of a loss of feedwater to one or 1 is also applicable to Unit 2. more steam generators or a major feedwater line rupture outside containment. For a feedwater line rupture inside containment the TVA analysis credits the high containment pressure Safety Injection signal. FSAR Section 15.4.2.2 has been revised accordingly.

Reference:

1. Watts Bar Unit 1 SER NUREG-0847, Supplement 14.

2. Westinghouse WCAP 13462, Revision 2 299 Provide Common Q Software Requirements Attachment 41 of the 10/5 letter contains the 223. Closed Closed TVA Letter EICB Specification Post Accident Monitoring System 00000- Common Q Software Requirements Specification dated 10/5/10 (Carte) ICE-3238 Rev. 5 Post Accident Monitoring System 00000-ICE- Response provided in letter 3238 Rev. 5 and the affidavit for withholding. dated 10/5/10 314 7.3 7.3 The following 50.59 changes were listed in the March Responder: Stockton 224. Closed Closed EICB RAI No. TVA Letter Related to OI 10 12 RAI response letter (item 10) but were not included 19 dated 10/21/10 in the September 9 submittal of 50.59 safety Attachment 8 contains the requested safety Response provided in TVA ML102910017, Enclosure 1 evaluations. Please submit the 50.59 safety evaluations. letter dated 10/21/10. 10/19/10 Item No. 24 EICB (Darbali) evaluations for the following changes:

• DCN 38842 (Revise OTT and OPT turbine runback setpoints)

• DCN 50991 (Install Test Points)

• DCN 51124 (Eliminate spurious ICS alarms associated with the SSPS 316 7.5.2. 7.5 TVA has provided various documents in support of Responder: Temples/Mather 225. Closed Closed RAI No. 26 3 RM-1000 high range monitors for WBN2. ML102980005 Please clarify the following: The Sequoyah RM-1000 v1.1 Software Response provided in letter Response 10/26/2010 RM-1000 v1.1 Software Verification Report 04508006 Verification Report 04508006 and RM-1000 v1.2 dated 10/21/10 acceptable per EICB (Singh)

(Sequoyah) Software Verification Report 04508006 are TVA letter of RM-1000 v1.2 Software Verification Report 04508006 applicable to WBN Unit 2. 10/21/10, (Sequoyah) Enclosure 1, Item RM-1000 System Verification Test Results (Sequoyah) The RM-1000 System Verification Test Results 26.

report is not applicable to WBN Unit 2. This These documents were prepared for the Sequoyah document was for the non-safety related software plant. IS the version provided applicable to WBN2? and was superseded by the 04508006 v1.1 and Please confirm and explain if these documents are v1.2 reports for the safety-related software.

applicable to WBN 2 as provided or with differences?

320 Per Westinghouse letter WBT-D-2340, TENNESSEE Responder: Clark 226. Closed Closed N/A N/A Duplicate of item 156 VALLEY AUTHORITY WATTS BAR NUCLEAR PLANT UNIT 2 FSAR Markups Units 1 and 2 118% vs This item is not required It was entered as a 121 % and Correction to RAI Response SNPB 4.3.2-7, tracking commitment from the 10/5 letter to issue (Reference 17) the 118% value should be 121%. FSAR Amendment 101 which includes the Depending on the use in the FSAR either 118% or described change. Amendment 101 will be

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date 121% is the correct value. As a result of the question, issued no later than 10/29.

Westinghouse reviewed all locations where either 118% or 121% are used and the context of use and provided a FSAR markup to reflect the correct value at the specific location. These changes will be incorporated in FSAR Amendment 101 321 For the purposes of measuring reactor coolant flow for Responder: Clark 227. Closed Closed N/A N/A Duplicate of OI# 157 Reactor Protection functions, elbow taps are used for both Unit 1 and 2. The discussion and equation are This item is not required It was entered as a valid for establishing the nominal full power flow which tracking commitment from the 10/5 letter to issue is used to establish the Reactor Protection System low FSAR Amendment 101 which includes the flow trip setpoint. However the method used to verify described change. Amendment 101 will be reactor coolant flow, as required by the Technical issued no later than 10/29.

Specifications, is not the same. Unit 1 uses a simplified methodology based on elbow tap P measurements correlated with precision calorimetric data over several cycles of operation as described in FSAR Reference 17, WCAP-16067, Rev 0, RCS Flow Measurement Using Elbow Tap Methodology at Watts Bar Unit 1. The plan is for Unit 2 to transition to this method after sufficient data is obtained. Pending this transition, 7.2.2.1.2 will be revised to read as follows:

Nominal full power flow is established at the beginning of each fuel cycle by either elbow tap methodology or, performance of the RCS calorimetric flow measurement. Unit 1 utilizes elbow tap methodology Reference [17]. Unit 2 utilizes the RCS calorimetric flow measurement. The results are used to normalize the RCS flow indicators and provide a reference point for the low flow reactor trip setpoint.

This change will be incorporated in FSAR Amendment 101 322 7.7.1. Section 7.7.1.11 will be added to FSAR Amendment Responder: Clark 228. Closed Closed EICB (Carte) 11 101 to provide a discussion of the Distributed Control System This item is not required It was entered as a tracking commitment from the 10/5 letter to issue FSAR Amendment 101 which includes the described change. Amendment 101 will be issued no later than 10/29.

324 EIC Per the NRC reviewer, the BISI calculation is not 229. Closed Closed B

(Mar required to be submitted.

c s) 325 The Unit 2 loops in service for Unit 1 that are Responder: TVA Startup Olson 230. Closed Closed Closed to open item ?

scheduled to be transferred to the Foxboro Spec 200 hardware will be transferred prior to Unit 2 fuel load EICB(Garg) 096 7.7.5 XX EICB 5/20/2010 Responder: 231. Closed Closed OI 283 EICB RAI No.3 TVA Letter (Darbal ML102910017, dated 7/30/10 i) TVA to provide information on implementation of IEN IEN 79-22 is not specifically listed or discussed in Response provided. NRC 10/19/10 79-22 and how it is addressed in the FSAR the WBN Unit 1 UFSAR or Unit 2 FSAR. IEN 79- staff to review response.

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date 22 is one of the precursors to 10CFR50.49 environmental qualification. The initial SQN and See Follow up question 283.

WBN Unit 1 response was developed prior to TVA implementing 10CFR50.49. As such, the discussion of safety-related actuations is no longer valid. In implementing 10CFR50.49, TVA upgraded susceptible safety-related devices located in harsh environments to fully qualified devices. For WBN Unit 2, only fully qualified safety-related devices are installed in areas susceptible to a high energy line break. The non-safety-related device/systems within the scope of IEN 79-22 are:

1. Steam generator power operated relief valve control system

2. Pressurizer power operated relief valve control system

3. Main feedwater control system

4. Automatic rod control system.

Failure of these systems/devices due to a high energy line break is fully addressed in Chapter 15, Accident Analysis of the WBN Unit 2 FSAR.

034. 7.3 7.3 Chapter 7.3 - ESFAS 232. Closed Closed to item N/A N/A 3 EICB Design Basis Analysis Parameters 153 Alternate Method for Use of Condenser Steam (Darbali) Dump 034. 7.5.1. 7.5.2 Chapter 7.5 - Instrumentation Systems Important to 233. Closed Closed to Item N/A N/A Closed EICB (Marcus) 4 1 Safety 192 Plant Process Computer Replacement RAI not required.

Containment Sump Level Transmitter Replacement Safety Injection Systems Cold Leg Accumulator For plant process computer see Level Items 192, 193, 194, 195, 196, Measurement System 198, 199, 203, 204, 206, 216, Common Q/PAMs This is closed by Norbert. and 224.

034. 7.5.1. 7.5.2 Chapter 7.6 - All Other Systems Required for Safety 234. Closed Closed to Item N/A N/A Closed EICB 5 1 7.6.7 Plant Process Computer Replacement 192 7.6.1 Loose Parts Monitoring System RAI not required.

(Marcus/Singh)

For plant process computer see Items 192, 193, 194, 195, 196, 198, 199, 203, 204, 206, 216, and 224.

034. Chapter 7.7 Control Systems 235. Closed Closed to item N/A N/A EICB (Singh/Darbali) 6 Alternate Means for Monitoring Control or 301 for alternate Shutdown rod position Rod Position indication.

Eliminate Pressurizer Backup Heaters on High Level Signal AMSAC Replacement Foxboro I/A WINCISE /Power Distribution Monitoring System (Beacon)

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date 173 7.1 7.1 6/17/2010 Responder: Craig/Webb/Powers 236. Closed Closed to OI 154 EICB RAI EICB (Garg)

ML102910008 EEB-TI-28 discusses the correction for setpoints with a Please see the revised response to letter item 3 TVA to provide Item#51 single side of interest. The staff finds this correction (I&C Matrix Item 154) question (Q1). date when factor is not justified. TVA should justify this correction information will be factor and demonstrate that, with this correction, factor docketed 95/95 criteria identified in RG 1.105 is met.

176 7.1 7.1 6/28/2010 Responder: Craig/Webb 237. Closed Closed to OI 154 EICB RAI EICB (Garg)

ML102910008 Placeholder: The staff has identified questions Setpoint methodology questions are addressed in TVA to provide Item#54 regarding instrument setpoints. The staff will keep the the revised response to letter item 3 (I&C Matrix date when instrument setpoint methodology issue open until TVA Item 154). information will be provides additional information regarding RIS 2006-17 docketed and single sided correction factor for uncertainty determination.

076 7.5.2 7.5.1 By letter dated March 12, 2010 TVA stated that the Responder: Clark Date: 5/25/10 238. Closed Closed to OI 71 N/A - No N/A EICB (Carte) target submittal date for the "Watts Bar 2 PAMS and 41(4) question was Specific Processor Module Software Test" was August Verify schedule dates for the next submittal of this Awaiting for document to be asked. Item 31, 2010. matrix against update WEC schedule. docketed by TVA. was opened to track commitment made by applicant.

078 4/26/2010 Responder: Clark Date: 5/25/10 239. Closed Closed to OI323 EICB RAI TVA Letter EICB (Garg)

ML102910008 dated 10/5/10 FSAR Section 7.1.2.1.8 adds a reference 6 to the (Q1) The cross reference information is corrected Response provided in letter FSAR AMD 100 OI# 18 FSAR. However, Reference 6 is for instrument in FSAR Amendment 100 submitted to the NRC dated 10/5/10 SSER 13 for unit setpoint and has nothing to do with the diversity on TVA letter to the NRC dated August __, 2010 1 references rev.

discussion on the FSAR Section. We believe the TVA (Reference 2). 1 of WCAP wants to add reference 7 which is the diversity Awaiting TVA response. 13869. Rev. 2 is document, WCAP 13869, "Reactor Protection System (Q2) WCAP-13869 revision 1 was previously used for Unit 2.

Diversity in Westinghouse Pressurized Water reviewed under WBN Unit 1 SER SSER 13 Identify all the Reactors." Please confirm this and add commitment (Reference 8). Unit 2 references revision 2. A differences to revise FSAR to correct the reference. (Q1) Also, review to identify the differences and justify their between Rev.1 confirm whether this WCAP has been reviewed by acceptability will be performed by September 30, and Rev.2 and NRC, if yes, provide reference and if not, then submit 2010 and submitted to the NRC no later than justify their the WCAP to NRC. (Q2) Also provide the justification November 15, 2010. acceptability.

for this reference to WBN2. (Q3)

(Q3) Westinghouse confirmed the applicability of this WCAP to Watts Bar Unit 2 in letter WBT-D-1321, Final Response to WBT-TVA-0713 Unit 2 WCAP Reviews, dated December 2, 2009 (Reference 10).

188 By letter dated June 30, 2010, TVA docketed, Responder: Clark 240. Closed Closed to Open ML101970033, TVA Letter EICB (Carte)

Tennessee Valley Authority (TVA) Watts Bar Unit 2 Item 187 Item No. 3 & 4 dated 10/5/10 (WBN2) - Post-Accident Monitoring System (PAMS) 1) The original design was to allow printing from Response provided in letter Licensing Technical Report, (Document Number both the Operator Module (OM) and Maintenance dated 10/5/10 WNA-LI-00058-WBT- P, Revision 0, June 2010) and Test Panel (MTP) via the plant computer.

(Westinghouse Proprietary Class 2). This required both to be connected to the plant NNC 08/25/10: See Open Item computer. Westinghouse did not perceive this as No. 187.

1) Figure 2.2-1 of the PAMS Licensing Topical Report an issue, because the standard Common Q does not show any connection between the Operators PAMS design includes both the flat panel displays Modules and the plant computer or printer; however, and individual control panel indicators. The Figure 2.1-1 of the PAMS System Requirements Westinghouse Common Q team did not realize Specification (WNA-DS-01617-WBT Rev. 1 - that WBN does not use the individual control ML101680578) shows a TCP connection from the panel indicators. As a result, the original design OMs to the plant computer and printer. Please documents provided by Westinghouse included

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date explain. the connection from the OM to the plant computer.

2) Section 5.3, Response to individual criteria in DI&C-ISG-04, of the PAMS Licensing Topical Report The TVA team did not realize that the does not address the TCP connection between the OM Westinghouse design relied on the OM and MTP and non-safety components depicted in Figure 2.1-1 of to be qualified isolation devices that protected the the PAMS System Requirements Specification (WNA- AC160 functions and individual control panel DS-01617-WBT Rev. 1 - ML101680578). Please indicators from interference from the plant explain. computer. It was not until a meeting was held to discuss the design of the OM that the issues came to light. That was when Westinghouse understood that the OM was the PAMS display and WBN did not use individual control panel indicators and TVA understood that the OM was being credited as the qualified isolation device.

It became apparent at the meeting to both TVA and Westinghouse that the original design was not acceptable. The team then agreed to delete the OM connection to the plant computer.

2) This is a duplicate of closed RAI Matrix Item 45.

022 7.3.2 5.6, Verify the auxiliary feedwater control refurbishment Date: 4/27/10 241. Closed Closed to open NRC Meeting TVA Letter EICB (Darbali) 6.3.5 results in a like-for-like replacement, and identify any item 285 Summary dated 4/27/10 changes from the identified precedents. By letter dated April 27, 2010 TVA responded to Date: 4/27/10 ML093560019, this request for information (Enclosure, Item No. Item No. 9 TVA Letter 9). TVA should confirm if dated 10/5/10 Woodward Governor is the The control function of the Auxiliary Feedwater only change.

(AFW) Flow for Steam Generator Level is the same as Unit 1. The controllers and signal See Item 285 for follow up modifiers/conditioners are Foxboro SPEC 200 question.

discrete analog modules as Unit 1 control loops.

The only different Unit 1 uses a 10-50ma signal Response is included in letter and Unit 2 is using a 4-20ma. The SPEC 200 dated 10/5/10.

control modules operate with a 0-10mv system for both Unit 1 and Unit 2.

The differences between the Units that have a control function for the AFW system is the differential pressure control upstream of the motor driven AFW pumps 2A-A and 2B-B. Unit 1 still has the analog Bailey/GEMac controllers and signal conditioners. Whereas Unit 2 has converted the controllers and signal conditioners to Foxboro SPEC 200 discrete analog components. Both loops still maintain a Fisher modifier for valve control.

The four (4) control loops are described below:

2-P-3-122A This loop controls the differential pressure of the Auxiliary Feedwater Pump 2A-A by varying valve 2-PCV-3-122. Differential Pressure Indicating Controller 2-PdIC-3-122A (on panel 2-M-4) can be used either in manual mode or in automatic mode. This loop controls this valve from the Main

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date Control Room when transfer switch 2-XS-3-122 (on panel 2-L-11A) is in the normal position.

2-P-3-122C This loop controls the differential pressure of the Auxiliary Feedwater Pump 2A-A by varying valve 2-PCV-3-122. Differential Pressure Indicating Controller 2-PdIC-3-122C (on panel 2-L-10) can be used either in manual mode or in automatic mode. This loop controls this valve from the Auxiliary Control Room when transfer switch 2-XS-3-122 (on panel 2-L-11A) is in the auxiliary position.

2-P-3-132A This loop controls the differential pressure of the Auxiliary Feedwater Pump 2B-B by varying valve 2-PCV-3-132. Differential Pressure Indicating Controller 2-PdIC-3-132A (on panel 2-M-4) can be used either in manual mode or in automatic mode. This loop controls this valve from the Main Control Room when transfer switch 2-XS-3-132 (on panel 2-L-11B) is in the normal position.

2-P-3-132C This loop controls the differential pressure of the Auxiliary Feedwater Pump 2B-B by varying valve 2-PCV-3-132. Differential Pressure Indicating Controller 2-PdIC-3-132C (on panel 2-L-10) can be used either in manual mode or in automatic mode. This loop controls this valve from the Auxiliary Control Room when transfer switch 2-XS-3-132 (on panel 2-L-11B) is in the auxiliary position.

Unit 2 controllers are Foxboro model N-250HM-M2NH-F; Signal Converters, current-voltage IN are model N-2AI-I2V, and voltage-current OUT are N-2AO-VAI; Control Card is model N-2AX+A4.

All components are supplied in accordance with requirements of 10CFR50 Appendix B and ASME NQA-1 as defined in Invensys Systems, Inc.

Corporate Quality Assurance Program Requirements, QMS, Revision S, dated October 26, 2007.

All components were manufactured with the same materials and processes as those qualified for Nuclear Class 1E Service per IEEE-323-1974 and IEEE-344-1975.

190 7.9 FSAR Table 7.1-1 states: Regulatory Guide 1.133, Responder: Clark 242. Closed Closed to Open RAI No. 4 TVA Letter Closed to OI-331.

EICB May 1981 Loose-Part Detection Program for the Item 331. ML102980005 dated 10/5/10 (Singh) Primary System of Light-Water Cooled Reactors, 1) TSR 3.3.6.3 specifies 18 months as the Response provided in letter 10/26/2010 Revision 1 (See Note 12)Note 12 Conforms except calibration frequency. dated 10/5/10 TVA letter of

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date as noted belowPositi[o]ns C.3.a.(3) and C.5.c. 10/5/2010, Item recommend a channel calibration be performed at 2) Per the Technical Requirements Manual (TRM) 55 provided the least once pe[r] 18 months. In lieu of this Bases 3.3.6 (Attachment 9) the surveillance response.

recommendation, the DMIMS will be calibrated at the requirements and frequency are provided in frequency stated in subsection TSR 3.3.6.3 of TR 3.3.6 Regulatory Guide 1.133, "Loose-Part Detection FSAR (Loose-Part Detection System). Program for the Primary System of Light-Water- conformance Cooled Reactors." claims open items

1) Clarify what frequency is specified in TSR 3.3.6.3. addressed in OI

3) TRM section 3.3.6 and its bases are contained No. 331 .

2) Please explain why the stated calibration frequency in Attachment 9 to the 10/5/10 response letter.

is adequate for meeting regulatory requirements.

3) Please provide sufficient documentation for the NRC to independently evaluate the conformance claims stated in the FSAR.

024 Provide a schedule by the January 13, 2010, meeting During the January 13, 2010 meeting, TVA 243. Closed Closed to Open NRC Meeting N/A - Request NNC 4/30/10: Carte to address EICB (Carte) for providing information in accordance with I&C presented a schedule for completing various Item No. 43 Summary for schedule response with respect to PAMS Interim Staff Guidance (ISG) 6. documents for the PAMS system. This schedule The explanations provided by ML093560019, information and Darbali to address response did not support TVA's desired schedule. TVA TVA (that certain information Item No. 11 with respect to RM1000.

was so informed and said they would work on is not required) are improving the schedule. TVA said that the unacceptable. TVA has agreed to submit the setpoint methodology would be provided shortly. requested information on the No other systems of documentation was NNC 8/18/10: The TVA docket.

discussed. agreement in the Comments column conflicts with the TVA By letter dated February 5, 2010 (see enclosure responses to other open items 1), TVA provided a list of documents and where TVA states that associated availability for PAMS. information is available for audit.

By letter dated April 27, 2010 TVA responded to this request for information (Enclosure, Item No.

11).

By letter Dated June 18, 2010 (see Attachment 3)

TVA provided a table, "Watts Bar 2 - Common Q PAMS ISG-6 Compliance Matrix."

216 7.5.1. 7.5.2 7/29/2010 Responder: Clark 244. Closed Closed. EICB RAI TVA Letter EICB RAI ML102861885 sent to EICB (Marcus) 1 ML102861885 dated 10/5/10 DORL By letter dated March 12, 2010 (ML101680577), TVA 1) EDCR 52322 is contained in Attachment 7. Response provided in letter NRC to issue Item No. 15 stated that it would provide five documents to describe 5) The design change referred to is the addition of dated 10/5/10 formal RAI to the Process computer: (1) EDCR 52322 Rev. A a data diode. This has not been incorporated into TVA.

excerpts, (2) HP RX2660 Users Guide AB419-9002C- the drawing. Please see the response to letter 10/5/10 TVA letter Response ed6, (3) Dell Poweredge R200 Server sheet November item 88 (RAI Matrix Item 224). 76 and Attachment 7 provided 2007, (4) RTP Corp 8707 I/O Brochure RTP 8707-02, information.

2004, and (5) Integrated Computer System Drawing.

269 DOR 8/20/2010 Responder: NRC 1. Y Open Open-NRC L

(Poo le)

DORL to send the Eagle-21 Audit Report to TVA.

043 7.5.2 7.5.1 2/19/2010 Responder: WEC Date: 5/25/10 2. N Open Open-NRC EICB RAI TVA Letter NNC 8/25/10: A CQ PAMS ISG6 EICB (Carte)

Review ML102910002 dated 2/5/10 compliance matrix was docketed The PAMS ISG6 compliance matrix supplied as The PAMS ISG6 compliance matrix supplied as Response is included in letter Item No. 2 on: (1) February, 5 12010, (2)

Enclosure 1 to TVA letter dated February 5, 2010 is a Enclosure 1 to TVA letter dated February 5, 2010 dated 10/5/10. Due 12/1/10 TVA Letter March 12, 2010, & (3) June 18, first draft of the information needed. The shortcomings is a first draft of the information needed. dated 5/12/10 2010. The staff has expressed of the first three lines in the matrix are: Revised compliance matrix is issued with all of these By letter dated April 8, 2010 TVA provided the unacceptable. TVA Letter compliance evaluations. The Line 1: Section 11 of the Common Q topical report did PAMS Licensing Technical Report provided dated 6/18/10 staff is still waiting for a good include a commercial grade dedication program, but additional information. NNC 8/12/10: It is not quite compliance evaluation.

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date this program was not approved in the associated SE. enough to provide all of the TVA Letter Westinghouse stated that this was the program and it Attachment 3 contains the revised Common Q documents requested. There dated 10/5/10 could now be reviewed. The NRC stated that TVA PAMS ISG-6 Compliance Matrix, dated June 11, are two possible routs to should identified what they believe was previously 2010, that addresses these items (Reference 13). review that the NRC can reviewed and approved. undertake: (1) follow ISG6, By letter Dated June 18, 2010 (see Attachment 3) and (2) follow the CQ SPM.

Line 2: TVA stated the D3 analysis was not applicable TVA provided a table, "Watts Bar 2 - Common Q The TVA response that was to PAMS, but provided no justification. The NRC PAMS ISG-6 Compliance Matrix." originally pursued was to asked for justification since SRP Chapter 7.5 identified follow ISG6, but some of the SRM to SECV-93-087 Item II.Q as being SRP It is TVAs understanding that this comment is compliance items for ISG6 acceptance criteria for PAMS. focused on the fact that there are documents that were addressed by NRC has requested that are currently listed as referencing the SPM. The Line 3: TVA identified that the Design report for being available for audit at the Westinghouse NRC approved the CQ TR and computer integrity was completed as part of the offices. For those Common Q PAMS documents associated SPM; it may be common Q topical report. The NRC noted that this that are TVA deliverable documents from more appropriate to review the report is applicable for a system in a plant, and the CQ Westinghouse, TVA has agreed to provide those WBN2 PAMS application to for topical report did no specifically address this PAMS to NRC. Westinghouse documents that are not adherence to the SPM that to system at Watts Bar Unit 2. deliverable to TVA will be available for audit as ISG6. In either path chosen, stated above. Requirements Traceability Matrix the applicant should provide NRC then concluded that TVA should go through and issues will be tracked under NRC RAI Matrix documents and a justification provide a more complete and thorough compliance Items 142 (Software Requirements Specification) for the acceptability of any matrix. and 145 (System Design Specification). deviation from the path Commercial Item Dedication issues will be chosen. For example, it tracked under NRC RAI Matrix Item 138. This appears that the item is considered closed. Westinghouse's CDIs are commercial grade dedication plans, but Westinghouse maintains that they are commercial grade dedication reports; this apparent deviation should be justified or explained.

065 7.5.2 7.5.1 By letter dated March 12, 2010 TVA stated that the Responder: WEC Date: 5/25/10 3. N Open Open-NRC N/A - No TVA Letter EICB (Carte) target submittal date for the FMEA was August 31, Review question was dated 10/5/10 2010. Attachment 37 to letter dated 10/5/10 contains the asked. Item proprietary version of the Common Q PAMS Due 12/1/10 was opened to FMEA and the affidavit for withholding. A non- track proprietary version will be provided at a later date. comm8ittment made by applicant.

101 4/12/2010 Responder: Slifer 4. Y Open Open-NRC N/A TVA is working with the vendor DORL (Poole)

Review to meet the 6/30 date, however The non-proprietary versions of the following RM- The documents, and affidavits for withholding for there is the potential this will slip 1000, Containment High Range Post Accident the listed documents were submitted to the NRC Due 10/14/10 to 7/14.

Radiation Monitor documents will be provided by June on TVA letter to the NRC dated July 15, 2010.

30, 2010. Confirm receipt.

1. V&V Report 04508006A

2. System Description 04508100-1TM

3. Qualification Reports 04508905-QR, 04508905-1 SP, 04508905-2SP, 04508905-3SP

4. Functional Testing Report 04507007-1TR 144 The WBN2 PAMS Software Requirements Responder: WEC 5. N Open Open-NRC ML101650255, TVA Letter WBN2 PAMS Software EICB Specification (WBN2 PAMS SRS) contains a table Review Item No. 8 dated 10/5/10 Requirements Specification (Carte) (see page iii) titled, Document Traceability & (a) The purpose of NABU-DP-00014-GEN Response provided in letter Compliance, which states that the WBN2 PAMS SRS document is to define the process for system level dated 10/5/10 Due 12/1/10 By letter dated April 8, 2010

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date was created to support the three documents identified design, software design and implementation, and (ML10101050203), TVA (two of these documents have been provided on the hardware design and implementation for Common NRC Review and WEC to Responses to docketed WNA-SD-00239-WBT, docket). Q safety system development. This document complete response. items a and e Revision 1, "RRAS Watts Bar 2 supplements the Common Q SPM, WCAP-16096- provided. Need NSSS Completion Program I&C (a) Please describe the third document (i.e., NABU- NP-A. The scope of NABU-DP-00014-GEN b-d to be addressed at public response to b-d. Projects, Software Requirements DP-00014-GEN Revision 2, Design Process for includes the design and implementation meeting and audit. Will Specification for the Post Common Q Safety Systems). processes for the application development. For a require information to be Accident Monitoring System, fuller description of the design process described docketed. dated February 2010 (b) Please describe the flow of information between in NABU-DP-00014-GEN please refer to the (ML101050202).

these three documents. Design Process for AP1000 Common Q Safety Systems, WCAP-15927 on the AP1000 docket.

(c) Does the PAMS SRS implement the requirements Since this is a Westinghouse process document in these three documents? that is not specifically referenced in the SRS, it will be removed in the next revision of the (d) Please describe if and how these three documents document.

are used in the development of the PAMS Software Design Description. (b) - Closed to items 142 and 145 (e) Do the WBN2 V&V activities include verification (c) - Closed 142 (d) N/A -

that the requirements of these three documents have Closed to Item been incorporated into the WBN2 PAMS SRS. (d) - Closed to Item 142 No. 142 (e) WBN2 PAMS Software Requirements Specification (WNA-SD-00239-WBT, Rev. 1) refers to Document Traceability & Compliance table on page iii. This table has three entries; Design Process for Common Q Safety Systems (NABU-DP-00014-GEN, Rev. 2), RRAS Watts Bar 2 NSSS Completion Program I&C Projects Post Accident Monitoring System - System Requirements Specification (WNA-DS-01617-WBT, Rev. 1), and RRAS Watts Bar 2 NSSS Completion Program I&C Projects Post Accident Monitoring System - System Design Specification (WNA-DS-01667-WBT, Rev. 1).

IV&V performed a Requirements Traceability Assessment during which it reviewed Software Requirements Specification (WBN2 PAMS SRS, WNA-SD-00239-WBT, Rev. 1) against System Requirements Specification (WNA-DS-01617-WBT, Rev. 1) and System Design Specification (WNA-DS-01667-WBT, Rev. 1). Requirements within Software Requirements Specification that are referring to NABU-DP-00014-GEN, Rev 2, Design Process for Common Q Safety Systems, have also been reviewed for traceability and compliance. During IV&V's RTA effort the anomaly reports V&V-769 and V&V- 770 have been initiated and reported in the IV&V Phase Summary Report for the System Definition Phase, WNA-VR-00283-WBT, Rev. 0.

IV&V has verified that the requirements in SRS are derived from the specified documents listed in the Document Traceability and Compliance Table of WBN2 PAMS SRS.

183 C B

(C 7/15/2010 Responder: WEC 6. Y Open Open-NRC EICB RAI TVA Letter art Review ML102980066 dated 10/21/10

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Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date An emphasis is placed on traceability in System The generic Software Requirements Specification Response provided in letter Item No. 9 Enclosure 1 Requirements Specifications in the SRP, in the applies except as modified by the WBN Unit 2 dated 10/21/10 Due 12/1/10 Item No. 4 unmodified IEEE std 830-1993, and even more so System Requirements Specification.

given the modifications to the standard listed in NRC to issue RAI Regulatory Guide 1.172, which breaks with typical NRC use of the word should to say Each identifiable requirement in an SRS must be traceable backwards to the system requirements and the design bases or regulatory requirements that is satisfies On page 1-2 of the Post Accident Monitoring Systems Software Requirements Specification in the background section, is the sentence Those sections of the above references that require modification from the generic PAMS are defined in the document referring purely to the changes from WNA-DS-01617-WBT Post Accident Monitoring System-System Requirements Specification or is it saying that there are additional changes beyond those and that the SRS defines them?

If there are additional changes, what is their origin?

214 7/27/2010 Responder: WEC 7. N Open Open-NRC EICB RAI TVA Letter EICB (Carte)

Review ML102980066 dated 10/5/10 By letter dated June 18, 2010 (ML101940236) TVA According to "The Software Program Manual for Response provided in letter Item No. 11 stated (Enclosure 1, Attachment 3, Item No. 10) that Common Q Systems," WCAP-16096-NP-1A, the dated 10/5/10 Due 12/1/10 the approved Common Q Topical Report contains Software Safety Plan only applies to Protection information to address the "Safety Analysis." The class software and PAMS is classified as WEC References Common Q Common Q SPM however states that a Preliminary Important-to-safety. Exhibit 4-1 of the SPM PAMS preliminary hazards Hazards Analysis Report and the V&V reports shows that PAMS is classified as Important-to- analysis is referenced in the document the software hazards analysis. Please Safety SRS. WEC to delete.

Provide these documents.

041 7.5.2 7.5.1 2/19/2010 Responder: WEC 1. N Open Open-TVA NRC Meeting TVA Letter See also Open Item Nos. 226 &

EICB (Carte)

Summary NRC dated 6/18/10 270.

Please provide the following Westinghouse Items (1) and (2) were docketed by TVA letter Response is included in letter Due 12/7/10 Meeting documents: dated April 8, 2010. dated 10/5/10. Summary TVA Letter (1) WNA-DS-01617-WBT Rev. 1, "PAMS System The SysRS and SRS TVA to docket ML093560019, dated 10/5/10 Requirements Specification" Item (3) will be addressed by Revision 2 of the incorporate requirements from information Item No. 11 (2) WNA-DS-01667-WBT Rev. 0, "PAMS System Licensing Technical Report. Due 12/3/10 many other documents by indentified in Design Specification" reference. ISG6.

(3) WNA-CD-00018-GEN Rev. 3, "CGD for QNX Item (4) will be addressed by Westinghouse version 4.5g" developing a WBN2 Specific Test Plan to NNC 8/25/10: (3) An earlier Please provide the following Westinghouse documents compensate for the fact that the NRC version of this report was or pointers to where the material was reviewed and disapproved WNA-PT-00058-GEN during the docketed for the Common Q approved in the CQ TR or SPM: original Common Q review. Due 12/7/10 topical report; therefore, there (4) WNA-PT-00058-GEN Rev. 0, "Testing Process for should be no problem to Common Q Safety systems" Item (5) Procedures that are listed in the SPM docket this version. (4) Per (5) WNA-TP-00357-GEN Rev. 4, "Element Software compliance table in the Licensing Technical ML091560352, the testing Test Procedure" Report revision 1 supersede that test procedure process document does not WNA-TP-00357-GEN.Due 10/22/10 address the test plan requirements of the SPM.

Please provide a test plan that implements the requirements of the SPM.

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date 054 7.5.2 7.5.1 4/19/2010 Responder: Slifer/Clark Date: 5/25/10 2. Y Open Open-TVA RAI No. 14 TVA Letter EICB (Singh)

ML102980005 dated 6/18/10 Please describe all the different environments in which The only safety-related application for the RM- Revised response is included Response 10/26/2010 the RM-1000 will be required to operate. Please group 1000 is the Containment High Range radiation in letter dated 10/29/10.(TVA acceptable. TVA these environments into two categories (a) Harsh monitors. The Containment High Range radiation to confirm) Design Criteria is to update on environment, per 10 CFR 50.49, and (b) Mild monitors will be installed in the Main Control WB-DC-40-54 is attached to issuance of letter Environment. Room, a mild environment. The detectors will be this letter. to close item.

installed remotely in the containment.

Due 10/14/10 For WBN Unit 2, a mild environment is defined as:

Identify source of A defined room or building zone where (1) the reference 3.

temperature, pressure, or relative humidity resulting from the direct effects of a design basis TVA to identify event (DBE) (e.g., temperature rise due to steam when and by what release) are no more severe than those which letter number WB-would occur during an abnormal plant operational DC-40-54 was condition, (2) the temperature will not exceed submitted to NRC.

130°F due to the indirect effects of a DBE (e.g., If not previously increased heat loads from electrical equipment), submitted then (3) the event radiation dose is less than or equal please submit this to 1 x 104 rads, and (4) the total event plus the 40 document.

year TID (total integrated dose) is less than or equal to 5 x 104 rads. (Reference 3).

What is Reference 3?

TVA Revised Response:

Reference 3 is TVA Design Criteria WB-DC 54, Environmental Qualification To 10CFR50.49, which provides the definition of mild and harsh environments. Attachment 13 to TVA letter dated October XX, 2010 contains WB-DC-40-54, Revision 4.

055 7.5.2 7.5.1 4/19/2010 Responder: Slifer/Clark Date: 5/25/10 3. Y Open Open-TVA RAI No. 15 TVA Letter EICB (Singh)

ML102980005 dated 6/18/10 The "Qualification Test Report Supplement, RM-1000 The detectors for these loops will be located in a Revised response is included Response 10/26/2010 Upgrades," Document No. 04508905-1SP Rev. A harsh environment (inside containment). The RM- in letter dated 10/29/10. (TVA acceptable. TVA 10/14/10 states that the qualification was done in accordance 1000 will be located in the main control room, to confirm) Design Criteria is to update on with IEEE 323-1974 and -1983. Please describe and which is a mild environment. The RM-1000 and WB-DC-40-54 is attached to issuance of letter justify all differences in this qualification methodology associated I/F converters have been tested to the this letter. to close item.

and that endorsed by Regulatory Guide 1.209. requirements present in IEEE Std. 323-1983 and -

Specifically address EMI and RFI 1974, as well as the System Requirements including EPRI TR 102323 (Sept. 94) in the Due 10/14/10 design basis.

Identify source of Electro-Magnetic-Interference and Radio reference 3.

Frequency Interference (EMI-RFI) testing was performed (the results of the testing are included in the Equipment Qualification Test Report submitted under TVA letter dated March 12, 2010, Reference 4). Since RG 1.209 was not issued until 2007, General Atomics test reports do not reference it.

For WBN Unit 2, a harsh environment is defined as:

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date A defined room or building zone where either (1) the temperature, pressure, and relative humidity resulting from the direct effects of a DBE (e.g.,

temperature rise due to steam release) are more severe than those which would occur during an abnormal plant operational condition, (2) the temperature will exceed 130°F due to the indirect effects of DBE (e.g., increased heat loads from electrical equipment), (3) the event radiation dose is greater than 1 x 104 rads, or (4) the total event plus the 40-year TID is greater than 5 x 104 rads.

(Reference 3)

What is Reference 3?

TVA Revised Response:

Reference 3 is TVA Design Criteria WB-DC 54, Environmental Qualification To 10CFR50.49, which provides the definition of mild and harsh environments. Attachment 13 to TVA letter dated October XX, 2010 contains WB-DC-40-54, Revision 4.

070 7.5.2 7.5.1 By letter dated March 12, 2010 TVA stated that the Responder: WEC Date: 5/25/10 4. N Open Open-TVA N/A - No TVA Letter EICB (Carte) target submittal date for the "Concept and Definition question was dated 6/18/10 Phase V&V Report" was March 31, 2010. Per Westinghouse letter WBT-D-1961, Response is included in letter Due 12/21/10 asked. Item (Reference 8) this document is available for audit dated 10/5/10. was opened to TVA Letter at the Westinghouse Rockville office. track dated 8/20/10 Regulations require that the comm8ittment WNA-VR- 00283-WBT, Rev 0 was submitted on NRC review be based on made by TVA Letter TVA letter to the NRC dated August 20, 2010 docketed material. Awaiting applicant. dated 10/5/10 (Reference 7). for document to be docketed by TVA.

The submitted V&V did not address the Requirements Traceability Matrix and did not NNC 8/25/10: Requirements summarize anomalies. At the September 15th Phase SVVR provided by TVA public meeting, Westinghouse agreed to include letter dated 8/20/10.

the Concept and Definitions Phase Requirements Traceability Matrix (RTM) in the next IV&V report along with partial Design Phase updates to the RTM.

TVA Revised Response:

TVA submitted WNA-VR- 00283-WBT, Rev 0 to NRC in letter dated August 20, 2010 (Reference 6).

The next Independent Verification and Validation (IV&V) report will include the Design Phase Requirements Traceability Matrix. The Design Phase IV&V Report will be submitted to NRC by February 11, 2011.

092 5/20/2010 Responder: Hilmes 5. N Open Open-TVA DORL (Poole) TVA to review Licensee Open Item list and determine This item will close when we are no longer using Continuous review which items are proprietary. this document as a communications tool. as items are added 103 7.4 7.4 EIC 5/27/2010 Responder: Ayala Date: 5/27/10 6. Y Open Open-TVA EICB RAI No.1 Submittal date is based on B

(Dar bali) ML102910017, current EDCR scheduled issue TVA to submit excerpts of EDCR 52321 Attachment 1 contains the draft Scope and Intent, Response is included in letter Due 10/31/10. 10/19/10 date.

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date Unit Difference and Technical Evaluation. The dated 10/29/10. Waiting for final documents will be submitted within two docketed version weeks of when the EDCR is issued. to close item.

104 7.4 7.4 5/27/2010 Responder: Merten Date: 5/27/10 7. Y Open Open-TVA EICB RAI No.1 Submittal date is based on EICB ML102910017, current EDCR scheduled issue TVA to submit excerpts of EDCR 52351 Attachment 2 contains the draft Scope and Intent, Response is included in letter Due 10/31/10. 10/19/10 date.

(Darbali) Unit Difference and Technical Evaluation. The dated 10/29/10 Waiting for final documents will be submitted within two docketed version weeks of when the EDCR is issued. to close item.

114 7.2 7.2 6/1/2010 Responder: WEC 8. Y Open Open-TVA EICB RAI TVA Letter EICB (Garg)

ML102910008 dated 6/18/10 Provide the resolution of the Eagle 21 Rack 5 lockup The following non-proprietary response was TVA to provide justification Due 10/31/10 Item#35 on update issue. developed from proprietary Westinghouse letter that there are no more WBT-D-2027 (Reference 11), which provided the surprises. The write-up resolution of this issue. Westinghouse approved shows that there this non-proprietary response via e-mail from A. was differences Drake to M. Clark on June 15, 2010. Revised response is included between Unit 1 in letter dated 10/29/10 and 2 but was not As documented in WBT-D-1917, Eagle-21 Rack identified to NRC 5 LCP Diagnostic Failures, (Reference 14), in earlier during the factory acceptance testing for the Unit response. Are 2 Eagle-21 System, Westinghouse noted an there any more occasional diagnostic failure while performing the surprises like this?

parameter update function on Rack 5.

Subsequently, TVA provided to Westinghouse for testing and examination, a Loop Control Processor (LCP) board removed by TVA from Unit 1 Rack 5 for life cycle-based preventive maintenance. TVA personnel familiar with Unit 1 had indicated they had not experienced problems when performing parameter updates on Unit 1 Rack 5.

Based on Westinghouse examination and testing, a difference in hardware was identified between the Unit 1 LCP shipped to Westinghouse, the new Unit 2 Rack 5 LCP, and an older LCP (older than the Unit 1 LCP) from the Westinghouse Eagle 21 test bed. Installed on the Unit 1 LCP was a different version of an 80287 math coprocessor chip (80287 XL).

This version of the 80287 had an improved specification for calculation speed. Use of this chip on both the Unit 2 LCP and the test bed LCP allowed proper performance of the LCP when making parameter updates using the Unit 1/Unit 2 Rack 5 software. Also, use of the slower 80287 on any of the three LCP boards caused failure in parameter update with the Unit 1/Unit 2 Rack 5 software.

Through investigation of historical records, Westinghouse found that the 80287 XL chip had been evaluated and used by its former Process Control Division (now Emerson) for this application, but the current Westinghouse

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date documentation had not been updated. This part has now been evaluated, and the Westinghouse documentation and drawing have been revised to allow use of the 80287 XL coprocessor. The 80287 XL coprocessor has been installed on the Unit 2 Rack 5 LCP, and the appropriate factory acceptance testing has been successfully conducted using this updated board. Additionally, the LCP boards in the balance of the Unit 2 racks have been updated with the 80287 XL coprocessor.

TVA Revised Response:

The Eagle 21 system is installed and the Site Acceptance Test has been completed. To the best of TVAs knowledge there are no unknown issues with the system.

117 7.1 7.1 6/3/2010 Responder: Hilmes 9. Y Open Open-TVA EICB RAI EICB (Garg)

ML102910008 Does TVA use a single sided or double sided Reactor Protection System (RPS) (comprised of Revised response is included Due 10/31/10 Item#21 methodology for as-found and as-left instrument Reactor Trip (RPS) and Engineered Safety in letter dated 10/29/10 setpoint values. (RIS2006-7) Features Actuation System (ESFAS)) setpoint TVA needs to values are monitored by periodic performance of address that trip surveillance tests in accordance with Technical setpoint and Specification requirements. TVA uses double- allowable value sided as-found and as-left tolerances for Reactor uncertainties are Trip and ESFAS trip setpoint surveillance tests as not reduced by described in FSAR amendment 100. the reduction factor for the TVA Revised Response: single sided reduction factor.

For TSTF-493 parameters WBN Unit 2 uses only TVA response not double sided correction factors. Attachment 3 acceptable. TVA contains the revised FSAR section 7.1.2.1.9 that need to clarify if will be included in FSAR Amendment 102 that single sided reflects this change. methodology has been used in calculating trip setpoint and allowable value and if it is used then provide justifications.

118 7.4 7.4 6/8/2010 Responder: Merten 10. Open Open-TVA EICB RAI No.1 Submittal date is based on EICB (Darbali)

ML102910017, current EDCR scheduled issue TVA to submit excerpts from EDCR 55385 Attachment 4 contains the draft Scope and Intent, Response is included in letter Due 10/31/10. 10/19/10 date. Note: The RVLIS EDCR Unit Difference and Technical Evaluation. The dated 10/29/10 Waiting for has been split into two EDCRs.

final documents will be submitted within two docketed version The first EDCR is 52601 (Open weeks of when the EDCR is issued. to close item. Item 91) The second EDCR is 55385.

140 The first requirement in the WBN2 PAMS SysRS (i.e., Responder: Clark 11. Open Open-TVA ML101650255, WBN2 PAMS System EICB (Carte)

R2.2-1) states: The PAMS shall be capable of Item No. 4 Requirements Specification operation during normal and abnormal environments WBN Unit 2 FSAR Amendment 100 Section Due 10/22/10 and plant operating modes. The rational for this 7.5.1.8 TVA docketed WNA-DS-01617-requirement is that it is necessary to meet Regulatory WBT Rev. 1, RRAS Watts Bar 2 Guide (RG) 1.97. NSSS Completion Program I&C Projects Post Accident

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date What document specifies which RG 1.97 variables are Monitoring System- System implemented in the Common Q based WBN2 PAMS? Requirements Specification, dated December 2009.

154 7.2 7.2 FSAR section 7.2.1.1.10, setpoints: NRC staff has Responder: Craig/Webb 12. Open Open-TVA ML101720589, TVA Letter EICB RAI ML102861885 sent to EICB (Garg) issued RIS 2006-17 to provide guidance to the industry Item No. 6 and dated 10/5/10 DORL regarding the instrument setpoint methodology which (Q1) Refer to the response to letter item 13, RAI Response is not acceptable. Due 10/31/10 EICB RAI complies with 10 CFR 50.36 requirements. Provide Matrix Item 51. A revised response will be ML102861885 the information on how the WBN2 setpoint submitted in the letter dated FSAR AMD 100. Item No. 8 methodology meets the guidance of RIS 2006-17 and (Q2) EEB-TI-28's single sided methodology 10/29/10. Since all the include this discussion in this section. Also, by letter conforms with WBN's design basis commitment to setpoint and dated May 13, 2010, TVA provided Rev. 7 of EEB-TI- ensure that 95% of the analyzed population is allowable value 28 to the staff. The staff noted that section 4.3.3.6 of covered by the calculated tolerance limits as for Unit 2 is EEB-TI-28 discusses the correction for setpoints with a defined in NRC Reg Guide 1.105, Revision 2, calculated and single side of interest. It should be noted that the staff 1986 that was in affect during WBN Unit 1 added to TS, TVA has not approved this aspect of setpoint methodology licensing. The single sided methodology is not needs to address for Unit 1. The staff finds this reduction in used for any TSTF-493 setpoints that use TI-28 the latest criteria uncertainties is not justified unless it can be methodology. and that include demonstrated that the 95/95 criteria is met. Therefore, 95/95 criteria.

either remove this reduction factor for single sided TVA Revised Response: Why the last uncertainties or justify how you meet the 95/95 criteria sentence has given in RG 1.105. (Q1) WBN 2 implementation of TSTF-493, been modified by Rev. 4, Option A includes addition of a adding TI-28. It discussion of the WBN setpoint was NRCs methodology in FSAR section 7.1.2.1.9. understanding that all setpoints (Q2) EEB-TI-28's single-sided methodology have to meet TI-conforms to WBN's design basis 28 commitment to ensure that 95% of the analyzed population is covered by the calculated tolerance limits as defined in NRC Reg Guide 1.105, Revision 2, 1986, which was in effect during WBN Unit 1 licensing. Single-sided multipliers are not used for any TSTF-493 setpoints.

There are some areas where a 95%

confidence level could not be achieved.

Some examples would be harsh environment instrumentation where only 2 or 3 devices were tested in the 10CFR50.49 program. In these situations, the Confidence is referred to as high..

156 7.2 7.2 FSAR section 7.2.2.1.1 states that dashed lines in Responder: WEC 13. Open Open-TVA ML101720589, TVA Letter Response on hold pending EICB (Garg)

Figure 15.1-1designed to prevent exceeding Item No. 8 dated 10/5/10 Westinghouse review.

121% of power.The value of 121% is changed Per Westinghouse letter WBT-D-2340, Response is included in letter TVA to Docket from 118%. The justification for this change states that TENNESSEE VALLEY AUTHORITY WATTS dated 10/5/10 FSAR this was done to bring the text of this section in BAR NUCLEAR PLANT UNIT 2 FSAR Markups Amendment 101.

agreement with section 4.3.2.2.5, 4.4.2.2.6 and table Units I and 2 118% vs. 121 % and Correction to 4.1-1. However, Table 4.1-1 and section 4.3.2.2.5 still RAI Response SNPB 4.3.2-7, (Reference 17) the show this value as 118%. Justify the change. 118% value should be 121%. Depending on the use in the FSAR either 118% or 121% are the correct values. As a result of the question, Westinghouse reviewed all locations where either 118% or 121% are used and the context of use and provided a FSAR markup to reflect the correct value at the specific location. These changes will be incorporated in a future FSAR

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Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date amendment.

186 7.7.8 7.7.1. 7/15/2010 Responder: Perkins/Clark 14. Open Open-TVA EICB RAI No.6 TVA Letter EICB (Darbali) 12 ML102910017, dated 10/5/10 Along with Amendment 96, TVA submitted a list of No. The previous wording reflected operation of Response included in letter Due Date 10/19/10 Bechtel changes for each section. Change number 45 the computer based AMSAC system. The dated 10/29/10 10/31/10. Waiting addresses a change to section 7.7.1.12, AMSAC, change reflects the operation of the relay logic for docketed however, the Justification column states This change based system that replaced the original computer version to close is not included. EDCR 52408 installs the AMSAC in based system in Unit 1. Unit 2 is installing a Response is satisfactory. item.

Unit 2. It does not have a trouble alarms. The existing similar relay logic based system, so the change to Issue date of Amendment 101 words better reflect the operation of the system. the Unit 1 wording is applicable to Unit 2. is not yet determined.

Even thought this change was not included in EDCR 52408 Summary Follow-up NRC Request:

Amendment 96, will it be included in a future amendment? A Purchase Order was issued to Nutherm TVA to state that no further International to provide a Unit 2 cabinet with the FSAR changes are planned.

Also, please submit a summary of EDCR 52408. same functions as the current Unit 1 AMSAC.

EDCR 52408 will install the cabinet and route/install cabling to provide the necessary inputs/outputs for/from the AMSAC cabinet.

In the Main Control Room, three cables will be installed for the AMSAC handswitch on 2-M-3 and AMSAC NOT ARMED and AMSAC ACTUATED annunciator windows.

In the Turbine Building, two pressure transmitters will be installed in two local panels to sense turbine pressure. Cables will be routed to the transmitters to provide the signal and power. Four cables will be routed to a local panel to provide steam generator level signals.

In the Control Building, three cables will be routed to separation relays which will provide the start signal for the Motor Driven Auxiliary Feedwater Pumps, Turbine Driven Auxiliary Feedwater Pump, and initiate a Turbine Trip. Additionally, a cable will be routed to Unit 2 ICS for AMSAC NOT ARMED and AMSAC ACTUATED log points.

This EDCR is intended to configure Unit 2 AMSAC like Unit 1 when possible.

TVA Revised Response:

No further changes to the FSAR associated with AMSAC are planned.

200 7.2 7/21/2010 Responder: Clark 15. Open Open-TVA EICB RAI TVA Letter EICB (Carte) 7.3 The statement in SER Section 7.5.1 is supported ML102980066 dated 10/5/10 7.5 Amendment 99 of the Watts Bar Unit 2 FSAR Section by the following: Response provided in letter TVA to provide Item No. 2 7.7 7.5, Instrumentation Systems Important to Safety,

• I&C Systems for Normal Operation FSAR dated 10/5/10 Amendment 101 does not include any description of instrumentation for Section NRC Review normal operation; therefore, Section 7.5 of the FSAR

• Eagle 21 7.2 does not support statements made in the SER Section

• Neutron Monitoring 7.2 7.5; compare SER (ML072060490) Section 7.5.1 and

• Foxboro Spec 200 7.3 (List of other sections FSAR Amendment 99 Section 7.5. Please identify in attachment 34) where, in the docketed material, information exists to

• Foxboro I/A 7.7.11 (new section will be added

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Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date support the statements in the SER Section 7.5.1. by amendment 101) (other sections have been previously provided)

• Plant Computer 7.5.2

• Rod Control 7.7.1.2

• CERPI 7.7.1.2

• Control Rod Drive 7.7.1.1

• Incore Neutron Monitoring 7.7.1.9

• Lose Part Detection/Monitoring 7.6.7

• Vibration Monitoring RCP 5.5.1.2

• Control Boards 7.1.1.10

• RVLIS 7.5, 5.6 201 7.7.1. 7.7.11 7/21/2010 Responder: Webb 16. Open Open-TVA EICB RAI TVA Letter EICB (Carte) 1.1 ML102980066 dated 10/5/10 Amendment 99, FSAR Section 7.7.1.1.1, "Reactor These functions are within the scope of the Response provided in letter TVA to docket Item No. 3 Control Input Signals (Unit 2 Only)," contains a Foxboro I/A system. Section 7.7.11 will be added dated 10/5/10 amendment 101.

description of functions performed uniquely for Unit 2. to the FSAR in amendment 101 to provide a Please describe the equipment that performs this discussion of the DCS.

function (in sufficient detail to support a regulatory evaluation), and evaluate this equipment against the appropriate regulatory criteria.

202 7.5.2 7/22/2010 Responder: WEC 17. Open Open-TVA EICB RAI TVA Letter EICB (Carte)

ML102980066 dated 10/5/10 The letter (ML0003740165) which transmitted the Revision 1 of the Licensing Technical Report will Response provided in letter Licensing Item No. 4 Safety Evaluation for the Common Q topical report to provide more detailed information on the changes dated 10/5/10 Technical Report Westinghouse stated: "Should our criteria or to the platform. R2 Due 12/3 regulations change so that our conclusions as to the acceptability of the report are invalidated, CE Nuclear Rev. 2 of the Licensing Technical Report will Power and/or the applicant referencing the topical include the applicability of guidance.

report will be expected to revise and resubmit their respective documentation, or submit justification for continued applicability of the topical report without revision of the respective documentation." Question No 81 identified many criteria changes; please revise the respective documentation or submit justification for continued applicability of the topical report.

211 7.5.1. 7/27/2010 Responder: Clark 18. Open Open-TVA EICB RAI TVA Letter Relates to SE Sections:

EICB (Carte) 1 ML102980066 dated 10/5/10 7.5.5, Plant Computer 7.5.2 FSA Table 7.1-1 shows: "The extent to which the The WBN 2 FSAR Section 7.5 defines the Response included in letter TVA to Docket Item No. 5 7.6.10, Loose Part Monitoring 7.6.1 recommendations of the applicable NRC regulatory following systems as important to safety dated 10/5/10 Amendment 101 7.7.1, Control System 7.7.1 guides and IEEE standards are followed for the Class Description 7.7.2 1E instrumentation and control systems is shown 1. Post Accident Monitoring including: 7.7.2, Safety System Status 7.7.4 below. The symbol (F) indicates full compliance. Those a. Common Q Post Accident Monitoring System Monitoring System 7.9 which are not fully implemented are discussed in the (Safety-Related) 7.7.4, PZR & SG Overfill referenced sections of the FSAR and in the footnotes i. Reactor Vessel Level 7.9, Data Communications as indicated." ii. Core Exit Thermocouples iii. Subcooling Margin Monitor Please describe how systems that are important to b. Eagle 21 indications (Safety-Related) safety, but not 1E, comply with 10 CFR 50.55a(a)1: c. Foxboro Spec 200 indications (Safety-Related)

"Structures, systems, and components must be d. Neutron Monitoring (Source and Intermediate designed, fabricated, erected, constructed, tested, and Range) (Safety-Related) inspected to quality standards commensurate with the e. Radiation Monitors (Safety-Related) importance of the safety function to be performed." f. Unit 1 and Common shared indications (Safety-Related)

g. Foxboro I/A indications (Non-Safety-Related)

h. Radiation Monitors (Non-Safety-Related)

i. CERPI (Non-Safety-Related)

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Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date

j. Integrated Computer System (Non-Safety-Related)

k. Unit 1 and Common shared indications (Non-Safety-Related)

Post Accident Monitoring Instrumentation Design Criteria, WB-DC-30-7, Rev. 22, Appendix A provides the minimum quality requirements for each Category (1, 2 or 3) of variable. By definition, no Category 1 variable can be non-safety-related. Therefore, non-safety-related variables and the source equipment are limited to category 2 or 3. Since some variables are designated as having more than 1 category, the requirements of the highest category apply.

Additional design criteria information for specific systems is contained in:

g. Foxboro I/A - Site-Specific Engineering Specification WBN Unit 2 NSSS and BOP Controls Upgrade Specification Rev. 1 (Attachment 23)

h. CERPI - Rod Control System Description, N3-85-4003, Rev. 12 Section 2.2, Design Requirements

i. Radiation Monitors - Design Criteria Document WB-DC-40-24, Radiation Monitoring - (Unit 1 /

Unit 2), Rev. 21

j. Integrated Computer System - Design Criteria Document WB-DC-30-29 Plant Integrated Computer System (ICS), Rev. 8 (Submitted under TVA to NRC letter dated August __, 2010)

2. Plant Computer (Integrated Computer System)

- See Item j above.

The WBN 2 FSAR Section 7.6, defines the following non-safety-related systems as other systems required for safety

1. Foxboro I/A - While not specifically described, functions performed by the system are described in this section. The qualify requirements are described above.

2. Lose Part Monitoring System - Design Criteria Document WB-DC-30-31, Loose Parts Monitoring System, Rev. 4, provides the quality requirements for this system. A description of the distributed control system will be added as FSAR section 7.7.1.11 in FSAR Amendment 101.

Installation is performed in accordance with the quality requirements of either the Bechtel or TVA work order processes based on the quality classification of the equipment being installed.

Vendor testing is performed in accordance with procurement specification requirements which are based on the type and quality classification of the

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Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date equipment. Preoperational testing is performed in accordance with Chapter 14 of the FSAR.

266 8/11/2010 Responder: Webb/Webber 19. Open Open-TVA TVA Letter EICB (Carte) dated 10/21/10 Please provide a high level description of the Foxboro FSAR section 7.7.1.11 will be added in Response provided in letter TVA to Docket Enclosure 1 IA equipment used at WBN2. This description should Amendment 101. In discussions with the NRC dated 10/21/10 Amendment 101. Item No. 9 be more detailed than a brochure on the product line reviewer on October 4, 2010 it was agreed that (or available on the web), and less detailed than a the new FSAR section along with previously technical manual on each field replaceable unit. It is submitted documents should be sufficient to expected that such literature already exists. address this request. The NRC reviewer will notify TVA if additional documentation is required.

274. 8/26/2010 Responder: Clark 20. Open Open-TVA RAI No. 6 TVA Letter EICB (Singh) b ML102980005 dated 10/21/10 Loose Parts Monitoring System: TR 3.3 refers to The reference will be changed to FSAR section Response provided in letter Response 10/26/2010 Enclosure 1 section 4.4.6 of the FSAR for description of the loose 7.6.7 Loose Part Monitoring System (LPMS) dated 10/21/10 acceptable. TVA Item No. 12 parts monitoring system. However, this section of the System Description in next revision of the to complete stated FSAR is not available. TVA to check the reference Technical Requirements Manual as shown below: action.

and respond.

1. Watts Bar FSAR, Section 7.6.7, Lose Part Due 10/31/10 Monitoring System.

(Note: Bechtel I&C to submit TRM change package to TVA Licensing.)

277 7.6 7.6.3 8/27/2010 Responder: Clark 21. Open Open-TVA EICB RAI EICB (Garg)

ML102910008 NUREG 0847, "Safety evaluation report Related to the Removal of the Upper Head Injection System was Response is included in letter Due 10/31 Item#61 operation of Watts Bar Nuclear Plant, Units 1 and 2." reviewed as part of the WBN Unit 1 original and dated 10/29/10 has section 7.6.3 which discusses the, "Upper Head was reviewed by the staff in SER Supplement 6:

Injection Manual Control" system but has been removed from the FSAR. Please provide the 1.7 Summary of Outstanding Issues - PAGE 1-information regarding when this system was removed, 3 "Supplement 6" and the justification for the removal of the system and if the NRC staff has previously reviewed and accepted (22) Removal of upper head injection system the removal of the system provide the reference to the Opened (SSER 6) 6.3.1 (TAC 77195) staff's SE.

281 7.6 7.6.8 8/27/2010 Responder: Webb 22. Open Open-TVA EICB RAI EICB (Garg)

ML102910008 For FSAR Section 7.6.8 in amendment 96, redline Attachment 5 contains the FSAR markup showing Response provided in letter Tva to docket in Item#65 version has completely rewritten this section of the what was changed. dated 10/29/10 10/31 letter FSAR, however, the staff is not able to determine any changes made to the section. Explain what changes have been made to this FSAR Section.

283 7.7.5 XX 8/27/2010 Responder: Clark 23. Open Open-TVA EICB RAI No.13 This item is a follow-up question EICB (Darbali)

ML102910017, to item 96.

Follow-up to item 96 1. Steam generator power operated relief valve Response is included in letter Due 10/31/10 10/19/10 control system dated 10/29/10 On Open Item 96, regarding the implementation of IEN 79-22, part of TVAs response was: The potential scenario for this event is addressed in 15.2.13, Accidental The non-safety-related device/systems within the Depressurization of the Main Steam System.

scope of IEN 79-22 are:

1. Steam generator power operated relief valve control 2. Pressurizer power operated relief valve system control system

2. Pressurizer power operated relief valve control system The potential scenario for this event is

3. Main feedwater control system depressurization of the reactor coolant

4. Automatic rod control system. system due to a relief valve failing open.

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Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date This is addressed in 15.2.12, Accidental Failure of these systems/devices due to a high energy Depressurization of the Reactor Coolant line break is fully addressed in Chapter 15, Accident System and 15.3.1, Loss Of Reactor Coolant Analysis of the WBN Unit 2 FSAR. From Small Ruptured Pipes Or From Cracks In Large Pipes Which Actuate The Please identify the sections of FSAR Chapter 15 that Emergency Core Cooling System.

address the failures of these systems.

3. Main feedwater control system The potential scenarios for this event are:

a. A loss of feedwater due a feedwater isolation valve failing closed. This is addressed in 15.2.8, Loss of Normal Feedwater.

b. A feedwater regulating valve failing open. This is addressed in 15.2.10, Excessive heat removal due to feedwater system malfunctions.

4. Automatic rod control system The potential scenarios are uncontrolled rod withdrawal events that are addressed in 15.2.1, Uncontrolled Rod Cluster Control Assembly Bank Withdrawal From A Subcritical Condition, 15.2.2, Uncontrolled Rod Cluster Control Assembly Bank Withdrawal At Power, and 15.2.3, Rod Cluster Control Assembly Misalignment.

285 7.3.3 7.3 8/27/2010 Responder: McNeil 24. Open Open-TVA EICB RAI No.15 This item is a follow-up question EICB (Darbali)

ML102910017, to item 22 Follow-up to item 22 The Foxboro SPEC 200 components are Response is included in letter 10/19/10 physically arranged in the racks to meet the dated 10/29/10 Due 10/31/10.

Do the control loops meet the requirements of IEEE- requirements of IEEE-279 and Watts Bar Design Waiting for 279? If not are they isolated from the circuit which Criteria WB-DC-30-4, Separation/Isolation. docketed version meets the requirements of 279. to close item.

Foxboro (Invensys) uses two IE analog modules to isolate IE to Non-IE signals. These are Contact Output Isolator (Model Number 2A0-L2C-R Relay Output) and Voltage-to-Current Converter (Model Number 2A0-VAI), both of which have the Input and Output signals isolated.

287 7.3 7.3-1 8/27/2010 Responder: Elton 25. Open Open-TVA ML102390538, EICB (Darbali)

Item No. 1, In Amendment 95 of FSAR section 7.3.2.3 Further Unit 2 FSAR Section 7.3 addresses Engineered Response included in next Due 10/31/10. 9/10/10 and Considerations, the list of signals that would start the Safety Features (ESF) Actuation System. TVA Licensing Formal RAI Waiting for EICB RAI No.17 auxiliary feedwater motor driven and turbine driven AMSAC is non-safety, and thus non-ESF. Response Letter. docketed version ML102910017, pumps was moved to table 7.3-1 item 3, Auxiliary Therefore, it was correct to not include AMSAC to close item. 10/19/10 Feedwater. However, item (6) AMSAC was not when the initiating signals were relocated from included in table 7.3-1. Unit 2 FSAR Section 7.3.2.3 to Table 7.3-1.

Please explain this omission or state your commitment to correct this in a future amendment.

288 7.3 9/2/2010 Responder: McNeil 26. Open Open-TVA EICB RAI EICB ML102910008 (Garg) Can we add a section to chapter 7 giving a brief The following new section will be added to the Response is included in letter Due 10/31/10 Item#67 overview of the Foxboro Spec 200 in Section 7.3? WBN Unit 2 FSAR as part of Amendment 102: dated 10/29/10

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Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date TVA should 7.3.1.1.3 Analog Instrumentation TVA committed to adding a include the list of description of the Foxboro all the functions The miscellaneous safety-related analog process Spec 200 hardware at the where Spec 200 is control and indication loops are a set of discrete 10/12 NRC Public Meeting. used and discuss analog modules that have been tested and differences qualified for use in safety related systems. The between unit 1 various components have been qualified to IEEE and unit2. This Standard 323-1983 (R-1996) IEEE Standard for discussion should Qualifying Class IE Equipment for Nuclear Power also include loop Generating Stations, IEEE Standard 344-1987 which are (R-1993) IEEE Standard Recommended currently used for Practices for Seismic Qualification of Class IE Unit 1 operation If Equipment for Nuclear Power Generating Spec 200 Stations, and IEEE Standard 384-1984 (R-1992) components have IEEE Standard Criteria for Independence of also been Class IE Equipment and Circuits. The modules qualified to RG are arranged in instrument loops to provide the 1.209, it should be safety function as described in the TVA licensing stated and if not basis for the Emergency Gas Treatment, Auxiliary why not.

Feedwater, and Safety-Related Balance of Plant systems. Seismic qualification of the analog modules and racks is addressed in FSAR Section 3.10.

The components are physically arranged in the racks to meet the requirements of IEEE-279 and Watts Bar Design Criteria WB-DC-30-4, Separation/Isolation.

Two IE analog modules are used to isolate IE to Non-IE signals. These are the Contact Output Isolator and Voltage-to-Current Converter, both of which have the Input and Output signals isolated.

289 9/2/2010 Responder: Faulkner 27. Open Open-TVA RAI No. 24 TVA Letter EICB (Singh)

ML102980005 dated 10/21/10 There are 4 Containment High Range Radiation Response provided in letter 10/26/2010 Enclosure 1 Provide an ISG 2 diversity analysis for the containment Monitors (HRRMs) for WBN2, a pair in upper dated 10/21/10 Staff has the Item No. 20 high range accident monitors RM-1000. containment and a pair in lower containment. following Each pair completely meets the requirements for comments on the safety related equipment including separation, proposed TVA independence, electrical isolation, seismic response per the qualification, quality requirements, etc. Each 10/21/submittal:

monitor channel is a standalone instrument loop with traditional individual panel readout. They are Response not a part of a Highly Integrated Control Room addresses (HICR) and there is no diversity question relating upscale failure.

to the HRRMs and any HICR infrastructure. Please explain Therefore, the response to this RAI will address how downscale the functional uses of the HRRMs and the failure of all alternate and diverse instrumentation that could HRRM channels be used for those functions should a common is detected and mode software issue render both trains of HRRMs appropriate non-functional. actions taken.

The Containment HRRMs have no automatic Please confirm actuation function. They only provide indication that the location as required by RG 1.97R2. They are used at for obtaining the WBN for 2 functions. They are used by the RCS sample is

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Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date operators in Emergency Operating Instructions accessible after (EOI) as one of the indications of abnormal an accident.

containment conditions indicative of a Loss of Coolant Accident (LOCA) after a Reactor Trip and Otherwise, the Safety Injection and they are used in Emergency response is Plan Implementing Procedures (EPIP) to assist acceptable.

with event classification for events which involve fuel cladding degradation. Due 10/31/10 In the EOI procedures, there are several diverse indications of containment conditions that are used to detect a LOCA and they are Containment Pressure, Containment Temperature, and Containment Sump Level. All of these instrument channels are diverse to the HRRMs in that they do not share a software platform or any integrated information or control system features. The HRRMs functional through individual, self contained, microprocessor based instrument loops. Containment Pressure and Sump Level indications are provided through Eagle 21 equipment which is completely diverse from the HRRMs. Containment Temperature is provided through Foxboro Spec 200 instrument channels which are completely diverse from the HRRMs.

All of these readouts are through traditional panel meters and are not part of any HICR infrastructure.

In the EPIPs, the HRRMs are used to indicate loss of fuel clad barrier and the potential loss of a containment barrier. Potential fuel clad damage can also be determined from samples taken from the Reactor Coolant System and from Incore Thermocouple readings. RCS sampling does not rely on plant instrumentation systems and the Incore Thermocouple System uses a Common Q software platform which is diverse from the HRRMs. The accessibility required to obtain post accident samples of RCS has been demonstrated to be a viable post accident action at WBN.

Should all 4 channels of HRRMs fail upscale, Annunciator Response Instructions would be followed and they call for evacuation of containment, sampling of RCS, checking other non-accident Radiation Monitors, notification of Radiological Control personnel to investigate, potential transition to Abnormal Operating procedures for management of potential radioactive material release, and evaluation under the Emergency Plan Implementing Procedures for event classification. All of these actions are conservative actions. Should all 4 channels of the HRRMs fail downscale, the operators would turn to diverse indications as noted above before taking any further action.

Therefore, there are diverse methods and

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Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date equipment sets that can be used for any functions provided by the HRRMs should both channels become nonfunctional.

291 7.7 9/7/2010 Responder: Clark 28. Open Open-TVA TVA Letter EICB (Carte) dated 10/21/10 The equation at the bottom of Amendment 100 page The errors in the terms within the equation for Response provided in letter response Enclosure 1 7.7-3 is wrong. There are two ways that this equation total rod speed error [TE] will be corrected in dated 10/21/10 acceptable Item No. 21 is inconsistent with the text above it. FSAR Amendment 101 as shown below:

TVA to docket 1 1 updated FSAR 1 1 1 1

293 7.7.4 7.2.2. 9/8/2010 Responder: Craig 29. Open Open-TVA EICB RAI TBD EICB RAI ML102861885 sent to EICB (Marcus) 3.5 ML102861885 DORL FSAR Amendment 100, Section 7.2.2.3.5 discusses Steam Generator Overfill Response is acceptable NRC to issue Item No. 22 Steam Generator Water Level and protection against FSAR Section 7.2 discusses reactor trip formal RAI to low water level. However, this section does not functions. Section 7.2.2.3.5 describes the Low- Response is included in letter TVA.

discuss protection against Steam Generator overfill. Low steam generator level reactor trip. The dated 10/29/10 Additionally, FSAR Section 7.2.2.3.4 discusses steam generator High-High level interlock (P-14) TVA formal Pressurizer Water Level and provides minimal protects against steam generator overfill by response due information concerning Pressurizer overfill. Please initiating feedwater isolation and a turbine trip. 10/31/10 provide a discussion of protection against Pressurizer Reactor trip occurs indirectly as a result of the and Steam Generator overfill. turbine trip if power is above 50%, the P-9 interlock. This function is identified as ESFAS interlock P-14 in FSAR Section 7.3, Table 7.3-3.

The High-High level interlock is also discussed in FSAR Section 10.4.7.3. Section 15.2.10 analyzes the feedwater malfunction event which causes one or more feedwater control valves to fail to the fully open position.

Pressurizer Overfill The High pressurizer water level reactor trip protects against pressurizer overfill. This trip is described in FSAR Section 7.2.1.1.2 (3). Section 7.2.2.3.4 discusses specific control and protection interactions related to pressurizer level control.

The high water level trip setpoint provides sufficient margin such that the undesirable condition of discharging liquid coolant through the safety valves is avoided. Pressurizer level is modeled in various Chapter 15 events to ensure that critical protection functions will function as required.

294 7.3 7.3.1. 9/9/2010 Responder: Elton 30. Open Open-TVA ML102390538, EICB (Darbali) 1.1 Item No. 2, In Amendment 95 of FSAR section 7.3.1.1.1 Function The information provided in Unit 2 FSAR Section Response included in next Due 10/31/10. 9/10/10 Initiation, item (13) was arranged into paragraph form 7.3.1.1 is not meant to describe the specific TVA Licensing Formal RAI Waiting for from what used to be a listing of items (a), (b) and (c). function of each item in detail; the descriptions Response Letter. docketed version provided are a summary listing. The omitted to close item.

The second bullet under item (c) was omitted in the information provided information beyond the level new paragraph. of detail provided for the other items in this section.

Initiates Phase B containment isolation of the following: The level of detail contained in item (13) of Unit 2

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Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date

• Closure of the main steam isolation valves (MSIV) FSAR Section 7.3.1.1 is consistent with that to limit reactor coolant system cooldown for breaks contained in item 13. of Unit 1 UFSAR Section downstream of the MSIVs. 7.3.1.1.

Please explain this omission or state your commitment to correct this in a future amendment.

295 7.3 7.3.1. 9/9/2010 Responder: Elton 31. Open Open-TVA ML102390538, EICB (Darbali) 1.2 Item No. 3, In Amendment 95 of FSAR section 7.3.1.1.2 Process The level of detail is sufficient for this section Response included in next Due 10/31/10. 9/10/10 Protection Circuitry, item (3), references to sections without the two removed references to other TVA Licensing Formal RAI Waiting for 7.6 and 7.7 were removed. Sections. Response Letter. docketed version to close item.

Please explain the reason for removal. The level of detail contained in item (3) of Unit 2 FSAR Section 7.3.1.1.2 is consistent with that contained in item 3. of Unit 1 UFSAR Section 7.3.1.1.2.

296 7.3 7.3.1. 9/9/2010 Responder: Elton 32. Open Open-TVA ML102390538, EICB (Darbali) 2.1 Item No. 4, In Amendment 95 of FSAR section 7.3.1.2.1 The information provided in Unit 2 FSAR Section Response included in next Due 10/31/10. 9/10/10 Generating Station Conditions, the new paragraph 7.3.1.2.1 is not meant to provide detailed TVA Licensing Formal RAI Waiting for was arranged from what used to be a listing of items information describing what each condition Response Letter. docketed version (1.b), (1.c), and (2.b), leaving out items (1.a) and (2.a).

includes. Deletion of the breaks described in to close item.

Even if the paragraph contains the word include, theItems (1.a) and (2.a) is justified because they are breaks in items (1.a) and (2.a) should be listed. encompassed by the operating conditions primary system breaks and secondary system breaks, Please explain this omission or state your commitment respectively.

to correct this in a future amendment.

The level of detail contained in Unit 2 FSAR Section 7.3.1.2.1 is consistent with that contained in Unit 1 UFSAR Section 7.3.1.2.1.

297 7.3 7.3.1. 9/9/2010 Responder: Elton 33. Open Open-TVA ML102390538, EICB (Darbali) 2.2 Item No. 5, In Amendment 95 of FSAR section 7.3.1.2.2 Unit 2 FSAR Section 7.3 addresses Engineered Response included in next Due 10/31/10. 9/10/10 Generating Station Variables, the following sentence Safety Features (ESF) Actuation System. Post TVA Licensing Formal RAI Waiting for was erased: accident monitoring is not an ESF; thus, a Response Letter. docketed version reference to it is not required in 7.3.1.2.2. to close item.

Post accident monitoring requirements and variables are given in Tables 7.5-1 and 7.5-2.

Please explain the reason for removal.

298 7.3 XX 9/9/2010 Responder: Clark 34. Open Open-TVA ML102390538, EICB (Darbali)

Item No. 6, IE Bulletin 80-06 calls for review of engineered safety A review of the schematic diagrams for the Response included in next Due 10/31/10. 9/10/10 features with the objective of ensuring that no device WBN Unit 2 valves listed in SER 3 found the TVA Licensing Formal RAI Waiting for will change position solely because of the reset following: Response Letter. docketed version action. to close item.

(1) For feedwater isolation valves (FCV-3-33, In Supplement 3 of NUREG-0847, section 7.3.5, the FCV-3-47, FCV-3-87, and FCV-3-100),

staff approved the design modifications proposed by feedwater check valve bypass valves (FCV-the applicant that would allow certain devices to 3-185, FCV-3-186, FCV-3-187, and FCV remain unchanged upon an ESF reset. The staff also 188), and upper tap main feedwater found acceptable the applicants justification for some isolation valves (FCV 3-236, FCV-3-239, safety-related equipment that does not remain in its FCV-3-242, and FCV-3-245), the Unit 2 emergency mode after an ESF reset. equivalent reset switch and a relay have been added for each steam generator loop.

Please confirm whether or not the equipment that was When the engineered safety feature (ESF) determined in NUREG-0847 and its supplements to signal is reset, the individual valve will not

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date remain unchanged upon an ESF reset will still remain change state until both the loop and the unchanged in Unit 2. ESF train reset switches have been reset.

(2) For steam generator blowdown isolation valves (FCV-43-54D, FCV-43-56D, FCV-43-59D, FCV-43-63D, FCV-43-55, FCV 58, FCV-43-61, and FCV-43-64), the ESF signal is sealed in by means of a seal in relay. The individual valve will not change state until a hand switch in the sample room is used to reopen the individual valve.

(3) For residual heat removal heat exchanger outlet flow control valves (FCV-74-16 and FCV-74-28), the ESF signal is sealed in by the limit switch. The Unit 2 equivalent reset switch has been added at the control room control board. When the ESF signal is reset, the individual valve will not change state until the individual reset switch has been reset.

300 Need Radiation Monitoring System Description/Design Responder: Temples/Mather 35. Open Open-TVA RAI No. 25 Criteria ML102980005 (1) The Radiation Monitoring Design Criteria Response is included in letter Due 10/31/10 10/26/2010 Are detectors different from Unit 1. Describe any Document, WB-DC-40-24, Revision 21 is dated 10/29/10(TVA to confirm TVA to address differences. contained in Attachment 5 to letter dated date when issued) the following October 31, 2010. comments:

Are there any commercially dedicated parts in the RM-1000? If so, how are they dedicated? (2) Attachment 7 contains the General Atomics (1) Is it Att. 5 or detector differences report. Att. 6?

Please confirm that digital communication ports (2) Pl. confirm available in RM-1000 are not used. (3) For safety-related applications, General that HRRMs EICB (Singh)

Atomics Electronic Systems, Inc. supplies the are loops 271-RM-1000 module assembly as a Basic 274.

Component. This assembly does contain (3) TVA to clarify component parts that are Safety-Related that GA has a Commercial Grade Items (SRCGI). Because commercial these SRCGI components are assembled into dedication the delivered Basic Component, they are program in dedicated to the assembly by virtue of the place and that acceptance test of the full RM-1000 GA is an assembly. approved 10CFR50, (4) The digital communications ports on the App. B safety-related RM-1000 radiation monitors supplier.

are not used. (4) Response acceptable.

301 1.TVA is requested to address the consequences of Responder: WEC/Davies/Clark 36. Open Open-TVA RAI No. 11 software common cause failure including all potential ML102980005 resulting failures (i.e. total loss of CERPI, system fail (1) A total loss of CERPI puts the plant into LCO Response is included in letter Due 10/31/10 10/26/2010 EICB (Singh) as-is). 3.0.3 which states: dated 10/29/10

1) Please

2. In addition, address how the actions stipulated in the When an LCO is not met and the associated address how plant Technical Specifications will be taken when the ACTIONS are not met, an associated fail-as-is is CERPI system indications are lost. Information notice ACTION is not provided, or if directed by the detected i.e.

IN 2010-10 (ML100080281) addresses the need to associated ACTIONS the unit shall be placed alarms, rod consider software failures and the actions required to in a MODE or other specified condition in position assure that the plant will stay within its licensing basis. which the LCO is not applicable. Action shall deviation

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Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date be initiated within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> to place the unit, as alarms, etc.

3. Provide FMEA in support of your response. applicable, in: 2) Response acceptable.

4. FSAR Table 7.7-1, Plant Control System Interlocks a. MODE 3 within 7 hours8.101852e-5 days <br />0.00194 hours <br />1.157407e-5 weeks <br />2.6635e-6 months <br />; 3) Response lists interlock C-11 to block automatic rod withdrawal acceptable.

when 1/1 Control Bank D rod position is above b. MODE 4 within 13 hours1.50463e-4 days <br />0.00361 hours <br />2.149471e-5 weeks <br />4.9465e-6 months <br />; and 4) a. Response setpoint. This interlock capability would be lost in case acceptable.

of total loss of CERPI. How is the rod block assured c. MODE 5 within 37 hours4.282407e-4 days <br />0.0103 hours <br />6.117725e-5 weeks <br />1.40785e-5 months <br />. b. Pl. address for this event? failure mode Exceptions to this Specification are stated in on fail-as-is.

5. How is automatic rod withdrawal affected in case of the individual Specifications.

5) Response total loss of signals from the CERPI to the ICS? Is this Where corrective measures are completed interlock fail safe? that permit operation in accordance acceptable.

with the LCO or ACTIONS, completion of the 6) Response 6.FSAR chapter 15, Section 2.3.2.1states that the actions required by LCO 3.0.3 is acceptable.

resolution of the rod position indicator channel is 5% of not required.

span (7.2 inches). The CERPI system accuracy specified in the CERPI System requirements (2) See the response to Question 1.

Specification, WNDS-DS-00001_WBT, Rev. 2 is 12 steps or 5.19%. The specified system accuracy (3) There is no FMEA for the CERPI system, nor seems to be greater than the accuracy assumed in the is one required to respond to questions 1 and FSAR Chapter 15. Please clarify this anomaly. 2.

(4) Control Bank D Automatic Rod Withdrawal Limit would be assured by Operations and control circuitry by the following 2 methods:

a. A simultaneous failure of all indications of the Rod Position Indication System places the plant in LCO 3.0.3 since it would prevent compliance with actions in LCO 3.1.8.

b. CERPI cabinet relays A-KX-18 and B-KX-18 are the PLC controlled components of Rod Withdrawal Limit. The relays are active low requiring power to activate the contacts in the control circuit as shown on attached. Total loss of CERPI will open the contacts and block Automatic Rod Withdrawal. Additionally, Annunciator window 64F will annunciate to show C-11 BANK D AUTO WITHDRAWAL BLOCKED.

(5) The CERPI Maintenance and Test Panels are used to set the Rod Withdrawal Limit with output signal to ICS as a parallel path. As stated above, the relays are the controlling functions and loss of signal to ICS will not affect the capability of the control circuit to disable the Automatic Rod Withdrawal function. The C-11 interlock is fail safe with regards to loss of power.

(6) RAI RESPONSE: The cycle-specific analyses for the static rod misalignment assume full misalignment of an individual rod from the bank position indicator(s). Such a

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Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date misalignment exceeds that which is possible during plant operations when accounting for the most adverse combination of the rod deviation alarm and uncertainty of the rod position indicator (both 12 steps). For consistency of parameter (and units) with the deviation alarm and position indicator uncertainty, the WBN Unit 2 FSAR Chapter 15, Section 2.3.1 will be revised in Amendment 102 to read:

The resolution of the rod position indicator channel is +/- 12 steps. Deviation of any RCCA from its group by twice this distance (24 steps) will not cause power distributions worse than the design limits. The deviation alarm alerts the operator to rod deviation with respect to group demand position in excess of 12 steps. If the rod deviation alarm is not operable, the operator is required to take action as required by the Technical Specifications.

This change is consistent with FSAR section 4.3.2.2.5, Limiting Power Distributions Page 4.3-13 which states the maximum deviation assumed is 12 steps.

302 7.5.2. 7.5.1 09/17/2010 Responder: Tindell 37. Open Open-TVA EICB RAI TBD EICB RAI ML102861885 sent to 1 ML102861885 DORL Item 208 requested a description of the changes that Attachment 8 contains the requested 50.59 Response is included in letter NRC to issue Item No. 23 were performed under 10 CFR 50.59 for 16 Unit 1 evaluations and the variable table cross dated 10/29/10 formal RAI to TVA See Item 332 PAM variables that were identified in Enclosure 1 Item referencing the variable to the appropriate DCN.

EICB (Marcus)

No.6 of the letter dated June 18, 2010 There are two changes to the original table. TVA formal (ML101940236). Please identify the specific 10 CFR Variable 9, RCS Pressurizer Level and 10, RCS response due 50.59 documentation that applies to each of these 16 Pressure Wide Range have been changed from 10/31/10 variables. 50.59 Y to N. The original response showed these variables as changed under 10 CFR 50.59.

The response was based on the plan to replace all paper recorders in Unit 1. The assumption was that these recorders would be replaced prior to Unit 2 startup. While this may still occur, the recorders have not been replaced at this time.

303 7.5.2. 7.5.1 09/17/2010 Responder: Tindell 38. Open Open-TVA EICB RAI TBD EICB RAI ML102861885 sent to 1 ML102861885 DORL Enclosure 1 Item 6 of the letter dated June 18, 2010 Attachment 9 contains the cross reference Response is included in letter NRC to issue Item No. 24 EICB (Marcus) included a column to indicate the Unit 2 variable between the Unit 2 and Unit 1 variable sources for dated 10/29/10 formal RAI to TVA See Item 333 source for each PAM variable and also if the variable the unique WBN Unit 2 variables within the scope was unique to Unit 2. For each variable that was of the Foxboro Spec 200, Common Q PAMS and TVA formal indicated as unique to Unit 2 and the Unit 2 variable Foxboro I/A changes. response due source is (1) Foxboro Spec 200, (2) Common Q 10/31/10 PAMS, or (3) Foxboro IA, identify the Unit 1 variable source.

304 7.5.2. 7.5.1 09/17/2010 Responder: Tindell 39. Open Open-TVA EICB RAI TBD EICB RAI ML102861885 sent to 1 ML102861885 DORL EICB Enclosure 1 Item 6 of the letter dated June 18, 2010 The source for the Unit 1 variables is the Eagle 21 Response is included in letter NRC to issue Item No. 25 indicated that the Unit 2 variable source for 14 PAM System. dated 10/29/10 formal RAI to TVA (Marcus) variables is Eagle 21. Please confirm that for each of these 14 variables the Unit 1 variable source is also Response is acceptable TVA formal

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Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date the Eagle 21. response due 10/31/10 305 7.5.2. 7.5.1 09/17/2010 Responder: Tindell 40. Open Open-TVA EICB RAI TBD EICB RAI ML102861885 sent to 1 ML102861885 DORL EICB (Marcus)

Enclosure 1 Item 6 of the letter dated June 18, 2010 The source for the Unit 1 variables is the Response is included in letter NRC to issue Item No. 26 indicated that the Unit 2 variable source for 2 PAM Integrated Computer System. dated 10/29/10 formal RAI to TVA variables is the Integrated Computer System. Please confirm that for these 2 variables the Unit 1 variable Response is acceptable TVA formal source was the Unit 1 plant computer system. response due 10/31/10 306 7.1 7.1 FSAR amendment 100, page 7.1-12 provides the Responder: Hilmes 41. Open Open-TVA EICB RAI definition of Allowable value which is not consistent ML102910008 EICB (Garg) with TSTF-493 as allowable value is the value beyond The FSAR Allowable Value definition will be Response is included in letter Due 10/31/10 Item#69 which instrument channel is declared inoperable. revised to be consistent with the TSTF-493 in dated 10/29/10 FSAR Amendment 102. Attachment 3 contains the revised FSAR section 7.1.2.1.9 that will be included in FSAR Amendment 102 that reflects this change.

307 7.1 7.1 (1) FSAR amendment 100, Section 7.1, page 7.1-12, Responder: Hilmes 42. Open Open-TVA EICB RAI definition of Acceptable as found tolerance is not in ML102910008 accordance with TSTF-493 as AAF is the limit beyond (1) The Acceptable As Found (AAF) definition will Response is included in letter Due 10/31/10 Item#70 which the instrument channel is degraded but may be be revised to be consistent with TSTF-493 in dated 10/29/10 operable and its operability must be evaluated. (2) FSAR Amendment 102. Attachment 3 Also it states that AAF is based on measurable contains the revised FSAR section 7.1.2.1.9 instrument channel uncertainties, such as drift, that will be included in FSAR Amendment 102 expected during the surveillance interval. These that reflects this change.

wording should be revised to agree with the wording given in RIS2006-17 as these wordings are very (2) Additional detail on the AAF methodology vague. (3) Also it states that RPS functions use double was provided in sections 7.1.2.1.9.1, sided tolerance limits for the AAF. Since AAF is a Westinghouse Setpoint Methodology, and band it will always be double sided and therefore, this 7.1.2.1.9.2, TVA Setpoint Methodology.

EICB (Garg) clarification does not mean anything and it clouds the These sections will be revised to clarify the issue. AAF calculations in FSAR Amendment 102.

Attachment 3 contains the revised FSAR section 7.1.2.1.9 that will be included in FSAR Amendment 102 that reflects this change.

(3) The statement about double sided limits addresses a TSTF requirement that the AAF tolerance consider errors in both the conservative and non-conservative directions and ensures that an as-found value which exceeds these limits, even in the conservative direction (away from the safety limit), will be evaluated. Attachment 3 contains the revised FSAR section 7.1.2.1.9 that will be included in FSAR Amendment 102 that reflects this change.

308 7.1 7.1 (1) FSAR Amendment 100, Section 7.1, page 7.1-13, Responder: Hilmes 43. Open Open-TVA EICB RAI definition of Acceptable as left tolerance is not in ML102910008 accordance with TSTF-493 as it states that this may (1) The statement about using calibration history Response is included in letter Due 10/31/10 Item#71 EICB (Garg) take calibration history into consideration. This is very to determine the Acceptable As Left (AAL) will dated 10/29/10 vague and ambiguous. (2) Also it states that RPS be deleted in FSAR Amendment 102.

functions use double sided tolerance limits. Since ALF Attachment 3 contains the revised FSAR is a band it will always be double sided and therefore, section 7.1.2.1.9 that will be included in FSAR this clarification does not mean anything and clouds Amendment 102 that reflects this change.

the issue.

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date (2) See response to letter item 27 (NRC Matrix Item 307).

309 7.1 7.1.2. (1) FSAR amendment 100, Page 7.1-14, Responder: Hilmes 44. Open Open-TVA EICB RAI 1.9.1 Westinghouse setpoint methodology, states that AAF ML102910008 is the algebraic sum of the .. This is not acceptable. (1) The AAF calculation for Westinghouse Response is included in letter Due 10/31/10 Item#72 EICB (Garg)

As algebraic sum is non conservative compared to the setpoint methodology calculations will be revised dated 10/29/10 SRSS method and will mask the operability of the to SRSS method.

instrument channel and therefore, it is not acceptable to the staff. (2) It also make the statement that ALT (2) Please refer to the response to letter item 28 may take calibration history into consideration which is (NRC Matrix Item 308).

vague and ambiguous.

310 7.1 7.1.2. (1) FSAR amendment 100, Page 7.1-14, TVA setpoint Responder: Hilmes 45. Open Open-TVA EICB RAI 1.9.2 methodology, states that for AAF .and other ML102910008 measurable uncertainties as appropriate (i.e., those (1) The statement will be revised to say those Response is included in letter Due 10/31/10 Item#73 present during calibration.) should be changed to present during the surveillance interval in dated 10/29/10 present during normal operation (2) Also on page FSAR Amendment 102. Attachment 3 7.1-15, states that ALT may take calibration history contains the revised FSAR section 7.1.2.1.9 EICB (Garg) into consideration which is vague and ambiguous. that will be included in FSAR Amendment 102 that reflects this change.

(2) The statement about using calibration history to determine the AAL will be deleted in FSAR Amendment 102. Attachment 3 contains the revised FSAR section 7.1.2.1.9 that will be included in FSAR Amendment 102 that reflects this change.

311 7.1 7.1 Both Westinghouse and TVA setpoint methodology do Responder: Hilmes 46. Open Open-TVA EICB RAI not have any discussion on single sided calculation. ML102910008 EICB (Garg)

Please confirm that single sided calculation has not A statement that single-sided corrections are not Response is included in letter Due 10/31/10 Item#74 been used for all setpoints with TSTF-493 and provide used for TSTF-493 setpoints will be included in dated 10/29/10 a statement to that effect in the FSAR. FSAR Amendment 102. Attachment 3 contains the revised FSAR section 7.1.2.1.9 that will be included in FSAR Amendment 102 that reflects this change.

313 7.7.8 7.7.1. EDCR 52408 (installation of AMSAC in Unit 2) states Responder: Ayala 47. Open Open-TVA EICB RAI No.18 12 that Design Criteria WB-DC-40-57 needs to be ML102910017, modified to reflect AMSAC in Unit 2. (1) The review of WB-DC-40-57 for Unit 2 Response is included in letter Due 10/31/10. 10/19/10 applicability has been completed and dated 10/29/10 Waiting for

1. Has WB-DC-40-57 been completed for Unit 2? If included in Revision 4 of the document. docketed version so, please submit. Attachment 10 contains TVA design criteria to close item.

WB-DC-40-57, Revision 4, Anticipated

2. If WB-DC-40-57 has not been completed for Unit Transients Without Scram Mitigation System 2, please give an estimated date of completion Actuation Circuitry (AMSAC).

EICB (Darbali) and submittal.

(2) The revision for Unit 2 is complete with open

3. Please submit WB-DC-40-57 for Unit 1 and items as identified in item (3) below.

identify any changes to the Unit 2 version.

Attachment 10 contains TVA design criteria WB-DC-40-57, Revision 4, Anticipated Transients Without Scram Mitigation System Actuation Circuitry (AMSAC) which is applicable to both WBN Unit 1 and Unit 2. There are 17 open Watts Bar Nuclear Plant Unit 2 Startup Integration Task Equipment List (WITEL) punch list items associated with Revision 4 that require resolution.

A list of the punch list items is contained in

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date Attachment 10.

317 7.5.2. 7.5 TVA has provided a proprietary and a non-proprietary Responder: Temples 48. Open Open-TVA RAI No. 27 3 version of Technical Manual for RM-1000 Digital Proposed ML102980005 Radiation Processor under ML101680582 and i. These documents are applicable to WBN Response is included in letter response is 10/26/2010 ML101680587). Unit 2. dated 10/29/10 acceptable. TVA ii. This was an error in document to issue and (i) Are these documents applicable to WBN2 as preparation that occurred when confirm letter EICB (Singh) provided (October 2003 version). attachments were assembled for a date.

(ii) Why is DCN38993-A attached at the back of previous letter.

the proprietary version? It is for WBN1 iii. The Technical Manual is not intended to Due 10/31/10 Turbine Governor Control Valve. include equipment requirements. (iii) Staff is looking for high (iii) This document does not state the Requirements would be found in the level requirements for RM-requirements for RM-1000 units. Please applicable TVA Specifications for the 1000 monitors. Pl. provide provide a document that states the contract. appropriate documents.

requirements for the RM-1000 radiation monitors for WBN2. Attachment 11 contains the Material Requisition Specification Revisions 1 and 4 which contain the requested information.

318 7.5.2. 7.5 TVA has provided the following documents for RM- Responder: Temples 49. Open Open-TVA RAI No. 28 3 1000 equipment qualification: ML102980005 (i) Applicable to WBN Unit 2. 04508905-1QR Note check 04508905-1QR Due 10/31/10 10/26/2010 (i) Qualification Test Report for RM-1000 Processor is applicable only in regards to the RM-1000, or QR. Staff version is QR Module and Current-To-Frequency Converter with the exception of re-qualification of only. Response 04508905-QR (January 2001) certain RM-1000 equipment differences acceptable. TVA (ii) Qualification Test Report Supplement, RM-1000 covered in the -1SP report. The Current-to- Response is included in letter to issue letter and Upgrades 04508905-1SP (June 2006) Frequency (I-F) converter module dated 10/29/10 confirm stated (iii) Qualification Test Report Supplement, RM-1000 qualifications in the base report and the - (future) dates Upgrades 04508905-2SP (June 2008) 1SP report are not applicable to the RM-EICB (Singh)

(iv) Qualification Test Report Supplement, RM-1000 1000s, and will be used later as references Upgrades 04508905-3SP (May 2008) in the WBN Unit 2 specific qualification reports.

Please clarify whether all of these are fully applicable (ii) Applicable to WBN Unit 2.

to WBN2 or are they applicable with exceptions? If (iii) Not applicable to WBN Unit 2 with exceptions, then please clarify what those are. (iv) Not applicable to WBN Unit 2 Supplement 3 was issued one month prior to The 04508905-3SP report was prepared for supplement 2. Please explain the reason for the another TVA plant, as a monitor system-level same. report, where the system included equipment mostly based on the base report equipment items.

These two -2SP and -3SP supplement reports were essentially worked concurrently, but the -

2SP document review/release process resulted in the release time difference.

319 7.5.2. 7.5 TVA provided System Verification Test Results Responder: Temples 50. Open Open-TVA RAI No. 29 3 04507007-1TR (July 1999) for Sequoyah to support ML102980005 test verification. However, the document states (page See TVA letter to the NRC dated October 21, Response is included in letter Due 10/31/10 10/26/2010 v) that it is not applicable for high range monitors with 2010, item 26 (RAI Matrix Item 316) for non- dated 10/29/10 an action noted for fixing a problem with the high range applicability of 04507007-1TR. The recorded Response EICB (Singh)

RM-1000 monitors on page vi. TVA to respond to the anomaly was later resolved through the acceptable. TVA following clarifications: verification of software version 1.2, reported in to issue letter and RM-1000 v1.2 Software Verification Report confirm stated Has the anomaly noted on page vi been resolved for 04508006. (future) dates the high range monitors?

The high range verification documents are the Provide the high range verification document for Sequoyah RM-1000 v1.1 Software Verification WBN2. Report 04508006 and RM-1000 v1.2 Software Verification Report 04508006.

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date 323 WCAP-13869 revision 1 was previously reviewed Responder: Craig 51. Open Open-TVA under WBN Unit 1 SER SSER 13 (Reference 8). Unit 2 references revision 2. An analysis of the differences WCAP 13869 was revised to address feedline Response is included in letter Due 10/31/10 and their acceptability will be submitted to the NRC by breaks occurring inside containment. Revision 2 dated 10/29/10 EICB(Garg)

November 15, 2010 was a result of the TVA decision to not insulate the Steam Generator level transmitter reference legs (Reference TVA response to NRC RAI 15.4.2.2 Q4).

Attachment 12 contains the WCAP 13869 Revision 2 Change Analysis.

326 TVA uses double-sided methodology for as-found and Responder: Webb 52. Open October 22, 2010 Open-TVA EICB(Gar as-left Reactor Trip and ESFAS instrument setpoint values. The FSAR will be revised in a future Attachment 3 contains the revised FSAR section Response is included in letter Due 10/31/10 g) amendment to reflect this methodology 7.1.2.1.9 that will be included in FSAR dated 10/29/10 Amendment 102 that reflects this change.

327 Attachment 36 contains Foxboro proprietary drawings Responder: Webber 53. Open Open-TVA DORL 08F802403-SC-2001 sheets 1 through 6. An affidavit (Poole) for withholding and non-proprietary versions of the Non-Prop drawings are available for submittal. Due 1/31/11 drawings will be submitted by January 31, 2011.

328 7.5.2. 7.5 Provide the model number for the four containment Responder: Temples 54. Open Open-TVA RAI No. 30 3 high range area monitors, RM-1000 and identify how Response OK. ML102980005 EICB the software V&V and qualification documents apply to The RM-1000 monitors are uniquely identified by Response is included in letter Awaiting TVA ltter 10/26/2010 (Singh) them. If there is no specific model number then how is serial numbers which are assigned when the dated 10/29/10 to close OI.

it ensured that the correct radiation monitor is received equipment is assembled. Due 10/31/10 at the site and subsequently installed?

329 7.6.1 7.6.7 Section 7.6.7 of the FSAR (Amendment 100) states Responder: Clark 55. Open Open-TVA RAI No. 1 EICB (Singh) that, The DMIMS-DX' audio and visual alarm ML102980005 capability will remain functional after an The FSAR Section 3.10 title is SEISMIC DESIGN Response is included in letter Due 10/31/10 10/26/2010 Operating Basis Earthquake (OBE). All of the DMIMS- OF CATEGORY I INSTRUMENTATION AND dated 10/29/10 DX' components are qualified ELECTRICAL EQUIPMENT. Since the Loose TVA to confirm for structural integrity during a Safe Shutdown Part Monitoring System is not a Category 1 that the Earthquake (SSE) and will not system, it is not included in the scope of 3.10. equipment has mechanically impact any safety-related equipment. FSAR Section 7.6.7 provides the information the been seismically seismic design of the system which is consistent qualified as TVA to clarify the seismic qualification of the loose with the requirements of TVA Design Criteria, required and that parts monitoring system and include the appropriate WB-DC-30-31, LOOSE PARTS MONITORING TVA reviewed and information in Table 3.10 (or another suitable section) SYSTEM. found the report of the FSAR. acceptable.

330 7.3 7.3 Related to Item 298 Responder: TBD 56. Open Open-TVA EICB RAI No.20 ML102910017, IE Bulletin 80-06 calls for review of engineered safety Due TBD 10/19/10 features with the objective of ensuring that no device will change position solely because of the reset action.

EICB (Darbali)

In Supplement 3 of NUREG-0847, section 7.3.5, the staff approved the design modifications proposed by the applicant that would allow certain devices to remain unchanged upon an ESF reset. The staff also found acceptable the applicants justification for some safety-related equipment that does not remain in its emergency mode after an ESF reset.

Please list for Unit 1 and Unit 2 the safety-related equipment that does not remain in its emergency mode after an ESF reset.

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date 331 7.6.1 7.6.7 As a follow up of OI 190, Staff has reviewed the Responder: Harless/Clark 57. Open Open-TVA RAI No. 8 Follow-up of OI-190.

proprietary version of the DMIMS-DX system ML102980005 description to verify the conformance claims in the TVA to add per their 10/27 update. 1) Path 10/26/2010 FSAR. Staff has noted the following insufficiencies acceptable.

and discrepancies between the FSAR and the 2) Path proprietary version of the system description for loose acceptable.

parts monitoring system provided by TVA. 3) OK.

4) Not answered.

1) FSAR, Amendment 100, page 7.6-5 states, 5) Does not During baseline testing, the reactor vessel and address steam generator are impacted three feet from vibration, it each sensor with a force of 0.5 ft-lb. Loose parts addresses detection is accomplished at a frequency of 1 kHz seismic.

to 20 kHz, where background signals from the RCS are acceptable. Spurious alarming from control rod stepping is prevented by a module that detects CRDM motion commands and automatically inhibits alarms during control rod stepping.

The online sensitivity of the DMIMS-DX' is such that the system will detect a loose part that weighs from 0.25 to 30 Ib and impacts with a kinetic energy of 0.5 ft-lb on the inside surface of the RCS pressure boundary within 3 ft of a sensor.

The source of this information is not cited nor is it described in the system description. TVA to provide the source of the information and update the system description as needed.

2) Regulatory Guide (RG) 1.133, rev.1, regulatory position C.1.g states that, Operability for Seismic and Environmental Conditions. Components of the loose-part detection system within containment should be designed and installed to perform their function following all seismic events that do not require plant shutdown, i.e., up to and including the Operating Basis Earthquake (OBE). Recording equipment need not function without maintenance following the specified seismic event provided the audio or visual alarm capability remains functional.

The system should also be shown to be adequate by analysis, test, or combined analysis and test for the normal operating radiation, vibration, temperature, and humidity environment.

FSAR, Amendment 100, page 7.6-5 states, The DMIMS-DX' audio and visual alarm capability will remain functional after an Operating Basis Earthquake (OBE). All of the DMIMS-DX' components are qualified for structural integrity during a Safe Shutdown Earthquake (SSE) and will not mechanically impact any safety-related EICB (Singh) equipment. Paragraphs 4.c and 4.d of the system description are not consistent with the seismic qualifications described in the FSAR. TVA to provide the source of the information contained in the FSAR and update the system description as

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date needed.

3) The system description clearly describes the In-containment equipment and DIMMS-DX Cabinet equipment. The FSAR should be updated to reflect the equipment locations for clarification purposes.

4) The information regarding frequency ranges of the sensors is included on page 7.6-6 of Amendment 100 of the FSAR but the system description does not contain this information. Please provide the source of this information and update the system description to reflect the appropriate information.

5) Please provide information as to how the in-containment components are qualified for vibration as addressed in regulatory position C.1.g of RG 1.133.

332 7.5.2. 7.5.1 10/26/2010 58. Open Open-TVA TBD TBD RAI is being drafted EICB (Marcus) 1 Related to 302 TVA to either officially transmit NRC to issue DCN 52389 or identify the formal RAI to TVA In response to Open Item 302 TVA provided a diskette letter that transmitted or will that included a draft of Attachment 8 to the proposed transmit DCN 52389. TVA to formally 10/29/2010 letter. Attachment 8 included 14 of the 15, respond 50.59 documents listed in the, RG 1.97 50.59 Listing.

DCN 52389 was not included on the diskette. Identify the document and date that officially transmitted or will transmit, DCN 52389 to the NRC. If DCN 52389 has not been previously transmitted to NRC please transmit the document to the NRC.

333 7.5.2. 7.5.1 10/27/2010 59. Open Open-TVA TBD TBD RAI is being drafted EICB (Marcus) 1 Related to 44 and 303 TVA to determine the correct NRC to issue information and officially formal RAI to TVA In response to Open Item 303, TVA provided a transmit the correct diskette that included a draft of Attachment 9 to the information. TVA to formally proposed October 29, 2010 letter. In Attachment 9, respond the Unit 2 variable source for RG 1.97 variable 37, CCS Sample Tank Level, was listed as Foxboro Spec 200. However, in response to Open Item 44, in Enclosure 1 to TVA letter dated June 18, 2010 (ML101940236), the Unit 2 variable source for RG

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date 1.97 variable 37 was listed as Foxboro I/A. Determine which is correct and formally issue a correction.

334 7 7 FSAR Figure 7A-3 Mechanical Flow and Control 60. Open Open-TVA RAI not N/A RAI not required because the EICB Diagram Symbols doesnt show the symbols for the required. figure is not part of any SE first column of valves. Please correct this in a future section.

(Darbali) FSAR amendment.

335 7.6.1 7.6.7 LPMS: Reference to OI-331, sub item 2. 61. Open Open-TVA Provide analysis, test, or combined analysis and test for normal operating radiation, temperature, and EICB (Singh) humidity environment per regulatory position C.1.g of RG 1.133. As an alternate TVA may confirm that the required equipment has been qualified for the environments stated in RG 1.133, position C.1.g and that TVA has reviewed the test report and found it acceptable.

050 7.5.2 7.5.1 4/8/2010 Responder: WEC Date: 5/25/10 1. N Open Open-TVA/WEC EICB RAI TVA Letter EICB (Carte)

ML102910002 dated 6/18/10 How should the "shall" statements outside of the These sections are descriptive text and not TVA response is inconsistent Due 12/31/10 Item No. 8 bracketed requirements in Common Q requirements requirements. The next revision of the Watts Bar (e.g., WNA-DS-01667-WBT documents be interpreted? Unit 2 PAMS System Requirements Specification Rev. 1 page 1-1, Section 1.3.1 will remove shall from the wording in those implies that "SysRS Section sections. A date for completing the next revision ###" has requirements. See of the System Requirements Specification will be also SDS4.4.2.1-1 on page 4-provided no later than August 31, 2010. 32).

The System Requirements Specification will be Is there a requirement on the revised by September 30, 2010 and submitted shall referenced above??

within two of receipt from Westinghouse.

Response is provided in letter TVA Revised Response dated 10/29/10.

This item is resolved by submittal of the revised SysRS and SysDS (attachments 7 and 8 of TVA Letter to NRC dated 10/25/10).

067 7.5.2 7.5.1 By letter dated March 12, 2010 TVA stated that the Responder: WEC Date: 5/25/10 2. N Open Open-TVA/WEC N/A - No TVA Letter EICB (Carte) target submittal date for the "Commercial Grade question was dated 6/18/10 Dedication Instructions for AI687, AI688, Upgraded PC The following status is from the revised WB2 This item is addressed in Rev. Due 12/3/10 asked. Item node box and flat panels." was September 28, 2010. Common Q PAMS ISG-6 Compliance Matrix 2 of the Licensing Technical was opened to submitted in response to Item 43: Report track comm8ittment

a. AI687, AI688 - Scheduled for September 28, made by 2010 applicant.

b. Upgraded PC node box and flat panel displays

- Per Westinghouse letter WBT-D-2024 (Reference 7), these items are available for audit at the Westinghouse Rockville office.

c. Power supplies - Per Westinghouse letter WBT-D-2035 (Reference 12), these items are available for audit at the Westinghouse Rockville office.

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date To be addressed during 9/20-9/21 audit 068 7.5.2 7.5.1 By letter dated March 12, 2010 TVA stated that the Responder: WEC Date: 5/25/10 3. N Open Open-TVA/WEC N/A - No TVA Letter EICB (Carte) target submittal date for the "Summary Report on question was dated 6/18/10 acceptance of AI687, AI688, Upgraded PC node box, The following status is from the revised WB2 This item is addressed in Rev. Due 12/3/10 asked. Item flat panels, and power supplies." was September 28, Common Q PAMS ISG-6 Compliance Matrix 2 of the Licensing Technical was opened to 2010. submitted in response to Item 43: Report track comm8ittment

a. AI687, AI688 - Scheduled for September 28, made by 2010 applicant.

b. Upgraded PC node box - Per Westinghouse letter WBT-D-2024 (Reference 7), this item is available for audit at the Westinghouse Rockville office.

c. Flat panel displays - Per Westinghouse letter WBT-D-2024 (Reference 7), this item is available for audit at the Westinghouse Rockville office.

d. Power supplies - Per Westinghouse letter WBT-D-2035 (Reference 12), these items are available for audit at the Westinghouse Rockville office.

To be addressed during 9/20-9/21 audit 069 7.5.2 7.5.1 By letter dated March 12, 2010 TVA stated that the Responder: WEC Date: 5/25/10 4. N Open Open-TVA/WEC N/A - No N/A EICB (Carte) target submittal date for the "Watts Bar 2 PAMS question was Specific FAT Report" was October 2010. Awaiting for document to be Due 2/18/11 asked. Item docketed by TVA. was opened to track comm8ittment made by applicant.

071 7.5.2 7.5.1 By letter dated March 12, 2010 TVA stated that the Responder: WEC Date: 5/25/10 5. N Open Open-TVA/WEC N/A - No N/A EICB (Carte) target submittal date for the "Design Phase V&V question was Report" was July 30, 2010. Awaiting for document to be Due 12/21/10 asked. Item docketed by TVA. was opened to track commitment made by applicant.

072 7.5.2 7.5.1 By letter dated March 12, 2010 TVA stated that the Responder: WEC Date: 5/25/10 6. N Open Open-TVA/WEC N/A - No N/A EICB (Carte) target submittal date for the "Implementation Phase question was V&V Report" was September 30, 2010. Awaiting for document to be Due 12/21/10 asked. Item docketed by TVA. was opened to track commitment made by applicant.

073 7.5.2 7.5.1 By letter dated March 12, 2010 TVA stated that the Responder: WEC Date: 5/25/10 7. N Open Open-TVA/WEC N/A - No N/A EICB (Carte) target submittal date for the "Integration Phase V&V question was Report" was October 29, 2010. Awaiting for document to be Due 12/31/10 asked. Item docketed by TVA. was opened to track commitment

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date made by applicant.

074 7.5.2 7.5.1 By letter dated March 12, 2010 TVA stated that the Responder: WEC Date: 5/25/10 8. N Open Open-TVA/WEC N/A - No N/A EICB (Carte) target submittal date for the "Final V&V Report" was question was November 30, 2010. TVA to provide due date. Due asked. Item was opened to track commitment made by applicant.

075 7.5.2 7.5.1 By letter dated March 12, 2010 TVA stated that the Responder: WEC Date: 5/25/10 9. N Open Open-TVA/WEC N/A - No N/A EICB (Carte) target submittal date for the "Watts Bar 2 PAMS question was Specific FAT Procedure" was September 30, 2010. Awaiting for document to be Due 11/24/20 asked. Item docketed by TVA. was opened to track commitment made by applicant.

081 7.5.2 7.5.1 5/6/2010 Responder: Merten/WEC 10. Open Open-TVA/WEC EICB RAI TVA Letter EICB (Carte)

ML102910002 dated 6/18/10 The PAMS Licensing Technical Report (WNA-LI- The codes and standards documents listed in ML101600092 Item No.1: Due 12/31/10 Item No. 9 00058-WBT Rev. 0, Dated April 2010), in Section 7, Section 7 of the Common Q PAMS Licensing There are three sets of lists codes and standards applicable to the Common Q Technical Report are the documents that the regulatory criteria that relate to TVA to provide PAMS. This list contains references to old revisions of Common Q platform was licensed to when the a Common Q application (e.g. requested several regulatory documents, for example: NRC approved the original topical report and WBN2 PAMS): information.

(1) RG 1.29 - September 1978 vs. March 2007 issued the approved SER. The WBN Unit 2 (a) Common Q platform (2) RG 1.53 - June 1973 vs. November 2003 Common Q PAMS is designed in accordance with components - Common Q TR (a) IEEE 379-1994 vs. -2000 the approved Common Q topical report and (b) Application Development (3) RG 1.75 - September 1975 vs. February 2005 approved SER and the codes and standards on Processes - Common Q SPM (a) IEEE 384-1992 vs. -1992 which the SER was based. Since the current (c) Application Specific -

(4) RG 1.100 - June 1988 vs. September 2009 versions referenced are not applicable to WBN current regulatory criteria (a) IEEE 344-1987 vs. -2004 Unit 2, there is no basis for a comparison review. The Common Q Topical (5) RG 1.152 - January 1996 vs. January 2006 Report and associated (a) IEEE 7-4.33.2-1993 vs. -2003 Bechtel to develop a matrix and work with appendices primarily (6) RG 1.168 - September 1997 vs. February 2004 Westinghouse to provide justification. addressed (a) and (b). The (a) IEEE 1012-1986 vs. -1998 Common Q SER states:

(b) IEEE 1028-1988 vs. -1997 (7) IEEE 279-1991 vs. 603-1991 Appendix 1, Post Accident (8) IEEE 323-1983 vs. -1974 (RG 1.89 Rev. 1 June Monitoring Systems, provides 1984 endorses 323-1974) the functional requirements However, LIC-110, "Watts Bar Unit 2 License and conceptual design Application Review," states: "Design features and approach for upgrading an administrative programs that are unique to Unit 2 existing PAMS based on should then be reviewed in accordance with the Common Q components current staff positions." Please identify all differences (page 58, Section 4.4.1.1, between the versions referenced and the current staff Description)On the basis positions. Please provide a justification for the of the above review, the staff acceptability PAMS with respect to these differences. concludes that Appendix 1 does not contain sufficient information to establish the generic acceptability of the proposed PAMS design (page 56, Section 4.4.1.3, PAMS Evaluation)

The NRC did not approve the proposed PAMS design.

Section 6, References, and

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date Section 7, Codes and Standards Applicable to the Common Q PAMS, of the PAMS Licensing Technical Report contain items that are not the current regulatory criteria.

Please provide an explanation of how the WBN2 PAMS conforms with the application specific regulatory criteria applicable to the WBN2 PAMS design. For example IEEE Std. 603-1991 Clause 5.6.3, Independence Between Safety Systems and Other Systems, and Clause 6.3, Interaction Between the Sense and Command Features and Other Systems, contain application specific requirements that must be addressed by a PAMS system.

Awaiting TVA Response.

082 7.5.2 7.5.1 5/6/2010 Responder: WEC Date: 11. Open Open-TVA/WEC EICB RAI TVA Letter EICB (Carte) 6/18/10 ML102910002 dated 7/30/10 The PAMS Licensing Technical Report (WNA-LI- Regulations require that the Revision 1, Due Item No. 10 00058-WBT Rev. 0, Dated April 2010), in Section 2.3, These components can be found in the Summary NRC review be based on 10/22/10 lists hardware/software changes to the Common Q Qualification Report Of Hardware Testing For docketed material. Awaiting PAMS previously reviewed by the NRC. However the Common Q Applications, 00000-ICE-37764, Rev for document to be docketed Common Q ISG-6 Compliance Matrix does not contain 3 and by TVA.

activities that address qualification of all changes TWICE Qualification Status Report, WNAQR-specifically: 00011-SSP Per Westinghouse letter WBT-D- NNC 8/9/10: per telephone 2024, (Reference __) dated June 9, 2010, these conversation on 8/5/10, it is documents are available for audit at the not clear how Westinghouse Westinghouse Rockville Office. Commercial Grade Dedication Plans and Reports for Digital TVA provided information by letter dated July 30, I&C. Westinghouse agree to 2010 (ML102160349) - See Enclosure 1 Item No. present to the NRC in a public

7. meeting on August 17, 2010, and explanation of how their Revision 1 of the Licensing Technical Report system addresses regulatory provides additional detail on the platform specific criteria for both commercial to WBN2 and references to the evaluation grade dedication and documentation. equipment qualification.

NNC 8/25/10: In the August 17, 2010 public meeting Westinghouse stated that the CDI were the plans. The NRC requested that the plans and associated reports be docketed.

085 7.5.2 7.5.1C B

(C 5/6/2010 Responder: WEC 12. Open Open-TVA/WEC EICB RAI art ML102910002

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date Please provide a detailed description of the PAMS Is the WEC ISG4 evaluation inadequate? A response will be provided by Due 11/24/10 Item No. 13 MTP data link to the plant computer. This description 10/31/10 should identify all equipment (model & version) and Operation of the MTP as a barrier device. MTP Hardware is in describe the functions that each piece of equipment Fails as a barrier device. Describe what prevents NNC 8/11/10: Design Rev. 1 of the performs. This description should be of sufficient a MTP failure from propagating to the AC160? information should be Licensing detail for the NRC to independently evaluate the available now. By letter dated Technical Report statements made in WNA-LI-00058-WBT Rev. 0, Node loss on the bus? Bus loss? July 30, 2010 (ML102160349) due 10/22.

Section 5.3. TVA stated that the MTP was Revise the ISG4 section of the Licensing connected to a Red Hat Linux NNC 8/25/10:

Technical Report (Rev. 2) to provide a more Server (see Enclosure 1, Item Disagree with detailed description of the MTP as a barrier No. 14 part b.). It is presumed path forward input device. that this server is not safety- by TVA above.

related. IEEE 603-1991 An explanation is Clause 5.6.3(1) states, about the design "Isolation devices used to is needed.

affect a safety system boundary shall be classified as FAT test part of the safety system." procedure to include data Please describe how the MTP storm testing of serves as the isolation device. the MTP interface due 11/24/10 086 7.5.2 7.5.1 5/6/2010 Responder: WEC Date: 5/24/10 13. Open Open-TVA/WEC EICB RAI TVA Letter EICB (Carte)

ML102910002 dated 6/18/10 The PAMS Licensing Technical Report (WNA-LI- The regulatory documents listed in the Common TVA to address with item OI Due 12/31/10 Item No. 14 00058-WBT Rev. 0, Dated April 2010), in Section 6, Q PAMS Licensing Technical Report are the 81.

lists references applicable to the Common Q PAMS. documents that the Common Q platform was This list contains references to old revisions of several licensed to when the NRC approved the original regulatory documents, for example: topical report and issued the approved SER. The (1) DI&C-ISG04 - Rev. 0 (ML072540138) vs. Rev. 1 WBN Unit 2 Common Q PAMS is designed in (ML083310185) accordance with the approved Common Q topical However, LIC-110, "Watts Bar Unit 2 License report and approved SER and the regulatory Application Review," states: "Design features and documents on which the SER was based. Since administrative programs that are unique to Unit 2 the current versions referenced are not applicable should then be reviewed in accordance with the to WBN Unit 2, there is no basis for a comparison current staff positions." Please identify all differences review.

between the versions referenced and the current staff positions. Please provide a justification for the Rev 0 of the Licensing Technical Report acceptability PAMS with respect to these differences. references Rev. 1 of ISG4 138 By letter dated February 3, 2010, Westinghouse Responder: WEC 14. Open Open-TVA/WEC ML101650255, EICB (Carte) informed TVA that certain PAMS documentation has Item No. 2 been completed. This item is used to track all Commercial TVA agreed to include a To be addressed Grade Dedication issues. description of the generic by Rev. 2 of the (a) The draft ISG6 states that a commercial grade Westinghouse hardware Licensing dedication plan should be provided with an application commercial grade Technical Report for a Tier 2 review. due 12/3.

dedication process in the By letter dated February 5, 2010, TVA stated that the PAMS licensing technical Due 12/3/10 commercial grade dedication plan was included in the report. (see ML102920031 Common Q Topical Report Section 11, Commercial Item No 1)

Grade Dedication Program. Section 11 includes a description of the Common Q Commercial Grade TVA agreed to include (in Dedication Program, and states: A detailed review the PAMS licensing plan is developed for each Common Q hardware or technical report) an software component that requires commercial grade evaluation of WBN2 critical dedication. characteristics for commercial Westinghouse

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date Please provide the commercial grade dedication plans hardware components for each Common Q hardware or software component against the generic critical that has not been previously reviewed and approved characteristics. (see by the NRC. ML102920031 Item No 2)

(b) The draft ISG6 states that a commercial grade dedication report should be provided within 12 months TVA agreed to include a of requested approval for a Tier 2 review. description of the generic Westinghouse software (i) Please provide 00000-ICE-37722 Rev. 0, commercial grade Commercial Grade Dedication Report for the QNX dedication process in the Operating System for Common Q Applications. PAMS licensing technical report. (see ML102920031 (ii) Please provide WNA-CD-00018-GEN Rev. 3, Item No 3)

Commercial Dedication Report for QNX 4.25G for Common Q Applications.

TVA agreed to include (in the PAMS licensing technical report) an evaluation of WBN2 critical characteristics for commercial software components against the generic critical characteristics. (see ML102920031 Item No 4) 142 The applicable regulatory guidance for reviewing the Responder: WEC 15. Open Open-TVA/WEC ML101650255, WBN2 PAMS System EICB (Carte)

WBN2 PAMS SysRS would be IEEE 830 as endorsed Item No. 6 Requirements Specification by Regulatory Guide 1.172 and BTP 7-14 Section This item is used to track all traceability TVA/Westinghouse agreed To be addressed B.3.3.1, Requirements Activities - Software issues with the Software Requirements to include the V&V by Revision of TVA docketed WNA-DS-01617-Requirements Specifications. IEEE 830-1994 Section Specification (SRS). evaluation of their reusable the RTM, SRS, WBT Rev. 1, RRAS Watts Bar 2 4.3.8, Traceable, states: A [requirements software element SysRS, and NSSS Completion Program I&C specification] is traceable of the origin of each of its At the September 15 public meeting in Rockville, SysDS. Projects Post Accident development process in the requirements is clear the following actions were agreed to. These Monitoring System- System items address the traceability concerns with the V&V design phase Due 12/31/10. Requirements Specification,

1. How did TVA ensure the traceability of each Software Requirements Specification. summary report. This dated December 2009.

requirement in the WBN2 PAMS SysRS. evaluation would include an

1. Westinghouse will perform completed a evaluation against the

2. Explain the source(s) of the requirements present review of the Requirements Traceability development process in the Post Accident Monitoring Systems Software Matrix(RT), using the issues identified at the requirements. This Requirements Specification. To clarify, many 9/15 public meeting as a guide (documented evaluation would also documents have requirements that are below) and update the RTM as required. include an evaluation of incorporated by reference into the SRS, but what how the WBN2 specific served to direct the author to include those 2. The next issue of the IV&V report will include requirements were various documents in the SRS or, if the the Requirements phase review of the RTM requirement is based on the System and a partial review for the Design phase. addressed by the reusable Requirements Specification, what directed the software elements. (see author to include the requirement there? 3. Westinghouse will add a comments column in ML102920031 Item No 5) the Requirements Traceability Matrix (RTM)

3. Clarify whether the unnumbered paragraphs in the to address items not in the SRS or SysRS.

Post Accident Monitoring Systems Software Requirements Specification, such as in the section 4. IEEE 830 says you shouldnt have planning headings, or are all such sections simply information in the SRS. Westinghouse has considered to be informative? agreed to remove this information.

Does the same apply to documents referenced by 5. IEEE 830 says you shouldnt have process the SRS? Such as WCAP-16096-NP-A, Rev. 1A, requirements in the SRS. Westinghouse has Software Program Manual for Common Q agreed to remove these requirements.

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date Systems, which is incorporated by reference in requirement R2.3-2 in the SRS. 6. Westinghouse will perform and document an evaluation of the SRS to ensure compliance R2.3-2 [The PAMS software shall comply with with Reg. Guide 1.172 and justify any the requirements and guidelines defined in WCAP- deviations.

16096-NP-A, Software Program Manual for Common Q Systems (reference 5).] 7. 25 issues identified by V&V where some requirements have not been included in the If any requirements are expressed in such SDS (14) and SRS (11) at the revisions unnumbered paragraph form instead of individually reviewed by V&V. Have these been identified requirements, please list them, describe addressed? Yes. The next revisions of the why they satisfy the fundamental requirement of SDS and SRS address these issues.

unambiguity, and describe how they were verified.

8. Some hardware requirements are contained

4. Are there any sources of requirements in parallel in the SRS instead of the System Design with the Post Accident Monitoring Systems Specification (SDS). These will be removed Software Requirements Specification? Meaning from the SRS and incorporated into the next does the SRS contain, explicitly or by reference, revision of the SDS.

all the requirements that were used in the design phase for the application specific software, or do 9. RTM item R4.2-2 protection class software software design phase activities use requirements set to 0. Needs to be fixed internally write found in any other source or document? If so, CAPs to revise the application restrictions what are these sources or documents? document on AC160.

5. References 12, 27, 29, and 31-44 in the Post 10. Westinghouse to improve the traceability of Accident Monitoring Systems Software the tests that are performed with the function Requirements Specification are various types of enable (FE) switch in the ENABLE position.

Reusable Software Element.

11. Westinghouse to revise documents to be These references are used in the body of the consistent with referring to the FE switch in SRS, for example: the ENABLE position R5.3.14-2 [The Addressable Constants CRC error 12. The flow of information is from the SysRS to signal shall be TRUE when any CAL CRC's the SDS (hardware) and SRS (software).

respective ERROR terminal = TRUE (WNA-DS- Describe how the documents are used.

00315-GEN, "Reusable Software Element Describe in 1.1 of the SysRS. Need a good Document CRC for Calibration Data" [Reference write up of how the process works.

12]).]

13. Westinghouse and TVA will develop a revised They are also included via tables such as found in schedule for document submittals and requirement R7.1.2-1 provide it to the NRC no later than 9/30/10

[The Watts Bar 2 PAMS shall use the application- 14. TVA will update the Procurement Requisition specific type circuits and custom PC elements Resolution Matrix and submit it to show how listed in Table 7.1-1.] the Common Q PAMS design meets the contract requirements.

Do the referenced reusable software element documents include requirements not explicitly stated in 15. Westinghouse to add the Software Design the SRS? If so what is their origin? Descriptions to the RTM

16. Westinghouse to clarify how requirements or documents are incorporated by reference into the Common Q PAMS requirements.

17. Westinghouse to review the use of shall outside of numbered paragraphs in requirements documents to ensure that all requirements are captured and clearly identified.

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date

18. Westinghouse to resolve the following questions concerning SDDs

a. Is the SDD a standalone document or will it incorporate the generic SDD by reference?

b. What are the SDDs?

c. PAMS is a delta document so how do we capture all the generic requirements for traceability.

For Reusable Software Elements, Westinghouse to describe as qualified libraries by following the SPM and qualified using the Software Elements Test procedure under Appendix B program.

Provide a summary of RSEDs generic WCAP.

Westinghouse to determine if the WCAP was docketed under the AP1000 RSED concept is not in the SPM. WCAP-15927 AP-1000 does not discuss RCEDs. WCAP process was acceptable.

RSEDs are listed in the SDD References.

143 The WBN2 PAMS Software Requirements Responder: WEC 16. Open Open-TVA/WEC ML101650255, WBN2 PAMS System EICB (Carte)

Specification (WBN2 PAMS SRS - ML101050202) Item No. 7 Requirements Specification contains a table (see page iii) titled, Document Addressed in the 9/15 public meeting and 9/20 - To be addressed Traceability & Compliance, which states that the 9/21 audit. A detailed explanation will be by Revision of TVA docketed WNA-DS-01617-WBN2 PAMS SRS was created to support the three provided. the RTM, SRS, WBT Rev. 1, RRAS Watts Bar 2 documents identified (one of which is the WBN2 PAMS SysRS, and NSSS Completion Program I&C SysRS). Section 1.1, Overview, of the WBN2 PAMS SysDS. Projects Post Accident SRS states: This document describes requirements Monitoring System- System for the major software components Due 12/31/10. Requirements Specification, dated December 2009.

(a) Please list and describe each of the major software components. Please include a description of any NRC review for each of these components.

(b) Please list and describe each of the other software components. Please include a description of any NRC review for each of these components.

(c) What other documents contain the requirements for the other software components?

The WBN2 PAMS System Design Specification (WBN2 PAMS SDS) contains a table (see page iii) titled, Document Traceability & Compliance, which states that the WBN2 PAMS SysRS was created to support the WBN2 PAMS SysRS. Section 1.1, Purpose, of the WBN2 PAMS SDS states: The purpose of this document is to define the hardware design requirements (c) Do the WBN2 PAMS SRS and SDS, together, implement all of the requirements in the WBN2 PAMS SysRS?

(d) Please briefly describe all of the documents that

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date implement the WBN2 PAMS SysRS.

145 The WBN2 PAMS System Design Specification Responder: WEC 17. Open Open-TVA/WEC ML101650255, WBN2 PAMS System Design EICB (Carte)

(WBN2 PAMS SDS) contains a table (see page iii) Item No. 9 Specification titled, Document Traceability & Compliance, which This item is used to track all traceability During the September 20- To be addressed states that the WBN2 PAMS SDS was created to issues with the System Design Specification 21, 2010 audit at by Revision of TVA docketed WNA-DS-01667-support the WBN2 PAMS SysRS. (SDS). Westinghouse, it was the RTM, SRS, WBT Rev. 1, RRAS Watts Bar 2 acknowledged that SysRS, and NSSS Completion Program I&C (a) Does the WBN2 PAMS SDS implement all of the At the September 15 public meeting in SysDS. Projects Post Accident TVA/Westinghouse had hardware requirements in the WBN2 PAMS SysRS? Rockville, the following actions were agreed Monitoring System- System to. These items partially address the previously (in September Due 12/31/10. Design Specification, dated (b) Please briefly describe all of the documents that traceability concerns with the System Design 15, 2010 public meeting) December 2009.

implement the hardware requirements of the WBN2 Specification. This item will be updated with stated:

PAMS SysRS. the results of the September 20 and 21 Commercial Grade Dedication and SDS RTM TVA would provide the audit. RSED RTM. (see ML102920031 Item No 6)

1. Westinghouse will perform completed a review of the Requirements Traceability TVA would revise and Matrix(RT), using the issues identified at the resubmit the PAMS RTM to 9/15 public meeting as a guide (documented below) and update the RTM as required. address all types of issues identified in the public

2. Some hardware requirements are contained meeting. (see in the SRS instead of the System Design ML102920031 Item No 7)

Specification (SDS). These will be removed from the SRS and incorporated into the next TVA would revise and revision of the SDS. resubmit the Software Verification and Validation

3. 25 issues identified by V&V where some phase summary report for requirements have not been included in the the requirements phase to SDS (14) and SRS (11) at the revisions reviewed by V&V. Have these been document the completion of addressed? Yes. The next revisions of the the requirements phase SDS and SRS address these issues. review. (see ML102920031 Item No 8)

4. TVA will update the Procurement Requisition Resolution Matrix and submit it to show how the Common Q PAMS design meets the contract requirements.

5. The next issue of the IV&V report will include the Requirements phase review of the RTM and a partial review for the Design phase.

6. Westinghouse to provide the generic AC160 and flat panel specifications.

7. Westinghouse and TVA to develop a schedule of licensing document submittals that can be met by the project team.

8. The flow of information is from the SysRS to the SDS (hardware) and SRS (software).

Describe how the documents are used.

Describe in 1.1 of the SysRS. Need a good write up of how the process works.

(

185 7/15/2010 Responder: WEC 18. Open Open-TVA/WEC EICB RAI C

a

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date ML102980066 An emphasis is placed on the traceability of Steve Clark to look at how to combine traceability Due 10/22/10 Item No. 17 requirements in Software Requirements Specifications items.

in the SRP, in the unmodified IEEE std 830-1993, and even more so given the modifications to the standard Was addressed to during the 9/15 meeting and listed in Regulatory Guide 1.172, which breaks with 9/20 - 9/21 audit.

typical NRC use of the word should to say Each identifiable requirement in an SRS must be traceable backwards to the system requirements and the design bases or regulatory requirements that is satisfies Also the NRC considers that the SRS is the complete set of requirements used for the design of the software, whether it is contained within one document or many. In order to evaluate an SRS against the guidance in the SRP the staff needs access to all the requirements.

References 12, 27, 29, and 31-44 in the Post Accident Monitoring Systems Software Requirements Specification are various types of Reusable Software Element.

These references are used in the body of the SRS, for example:

R5.3.14-2 [The Addressable Constants CRC error signal shall be TRUE when any CAL CRC's respective ERROR terminal = TRUE (WNA-DS-00315-GEN, "Reusable Software Element Document CRC for Calibration Data" [Reference 12]).]

They are also included via tables such as found in requirement R7.1.2-1

[The Watts Bar 2 PAMS shall use the application-specific type circuits and custom PC elements listed in Table 7.1-1.]

Do the referenced reusable software element documents include requirements not explicitly stated in the SRS? If so what is their origin?

187 By letter dated June 18, 2010, TVA docketed Responder: Merten 19. Open Open-TVA/WEC ML101970033, TVA Letter Are these connections already EICB (Carte) responses to NRC requests for information. Item No. 1 & 2 dated 10/5/10 docketed?

1) Please refer to the revised response to letter Response provided in letter Revise Response

1) Enclosure 1, Item No. 33 of the TVA letter dated dated 10/5/10 Item 18 (RAI Matrix item 115). dated 10/5/10 June 18, 2010, did not identify any connection from the Due 12/31 PAMS Operator Modules (OMs) to the plant computer and printers; however, Figure 2.1-1 of the PAMS 2) This is a duplicate of closed RAI Matrix Item NNC 8/25/10: Why did TVA System Requirements Specification (WNA-DS-01617- 45. not catch this on the review of WBT Rev. 1 - ML101680578) shows a TCP the PAMS SysRS or SRS?

connection from the OMs to the plant computer and Does TVA check that the CQ printer. Please explain. PAMS system meets the requirements in its purchase

2) Please clarify whether any digital safety-related specifications?

systems or components have a digital communications path to non-safety-related systems or with safety related systems in another division. If so, NRC staff will need these paths identified on the docket.

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date 212 7.5.2 7/27/2010 Responder: WEC 20. Open Open-TVA/WEC EICB RAI EICB (Carte)

ML102980066 By letter dated June 18, 2010 (ML101940236) TVA Application specific requirements for testing. This Due 12/31/10 Item No. 10 stated (Enclosure 1, Attachment 3, Item No. 3) that the cannot be addressed in a topical report.

PAMS system design specification and software Evaluation of how the hardware meets the requirements specification contain information to regulatory requirements.

address the "Design Report on Computer Integrity, Test and Calibration..." The staff has reviewed these WEC to provide the information and determine documents, and it is not clear how this is the case. where the information will be located.

(1) Please describe how the information provided demonstrates compliance with IEEE 603-1991 Clauses 5.5, 5.7, 5.10, & 6.5.

(2) Please describe how the information provided demonstrates conformance with IEEE 7-4.3.2-2003 Clauses 5.5 & 57.

213 7.5.2 7/27/2010 Responder: WEC 21. Open Open-TVA/WEC EICB RAI EICB (Carte)

ML102980066 By letter dated June 18, 2010 (ML101940236) TVA Conformance with IEEE 603 is documented in the Response is included in letter Due 12/31/10 Item No. 18 stated (Enclosure 1, Attachment 3, Item No. 3) that the revised Common Q PAMS Licensing Technical dated 10/25/10 PAMS system design specification and software Report and the Common Q PAMS System Design requirements specification contain information to Specification. NNC to review and revise this .

address the "Theory of Operation Description." The question after LTR R1is staff has reviewed these documents, and it is not clear Attachment 1 contains the proprietary version of received.

how this is the case. The docketed material does not Westinghouse document Tennessee Valley appear to contain the design basis information that is Authority (TVA), Watts Bar Unit 2 (WBN2), Post-required to evaluate compliance with the Clause of Accident Monitoring System (PAMS), Licensing IEEE 603. Technical Report, Revision 1, WNA-LI-00058-(1) Please provide the design basis (as described in WBT-P, Dated October 2010 IEEE 604 Clause 4) of the Common Q PAMS.

(2) Please provide a regulatory evaluation of how the Attachment 8 contains the proprietary version of PAMs complies with the applicable regulatory Westinghouse document Nuclear Automation requirements for the theory of operation. Watts Bar 2 NSSS Completion Program I&C For example: Regarding IEEE 603 Clause 5.8.4 (1) Projects Post Accident Monitoring System -

What are the manually controlled protective actions? System Design Specification, WNA-DS-01667-(2) How do the documents identified demonstrate WBT, Rev. 2 dated September 2010.

compliance with this clause?

244 8/3/2010 Responder: WEC 22. Open Open-TVA/WEC EICB RAI LIC-101 Rev. 3 Appendix B EICB (Carte)

ML102980066 Section 4, "Safety Evaluation" Section 8.2.2 of the Common Q SPM (ML050350234) The process related requirements have been Response is provided in letter Due 10/22/10 Item No. 14 states: "the information relied states that the Software Requirements Specification removed from revision 2 of the Software dated 10/25/10. upon in the SE must be (SRS) shall be developed using IEEE 830 and RE Requirements Specification (SRS). docketed correspondence."

1.172. Clause 4.8, "Embedding project requirements in the SRS," of the IEEE 830 states that an SRS Attachment 3 of letter dated 10/25/10 contains the LIC-101 Rev. 3 states: "The should address the software product, not the process proprietary version of Westinghouse document safety analysis that supports the of producing the software. In addition Section 4.3.2.1 Nuclear Automation, Watts Bar 2 NSSS change requested should include of the SPM states "Any alternatives to the SPM Completion Program, I&C Projects, Software technical information in sufficient processes or additional project specific information for Requirements Specification for the Post Accident detail to enable the NRC staff to the ...SCMP...shall be specified in the PQP. Monitoring System, WNA-SD-00239-WBT, make an independent Revision 2, Dated September 2010. assessment regarding the Contrary to these two statements in the SPM, the acceptability of the proposal in WBN2 PAMS SRS (ML101050202) contains many terms of regulatory requirements process related requirements, for example all and the protection of public seventeen requirements in Section 2.3.2, health and safety."

"Configuration Control," address process requirements for configuration control.

Please explain how the above meets the intent of the approved SPM.

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date 245 8/3/2010 Responder: WEC 23. Open Open-TVA/WEC EICB RAI LIC-101 Rev. 3 Appendix B EICB (Carte)

ML102980066 Section 4, "Safety Evaluation" Section 5.8 of the Common Q SPM (ML050350234) Relates to the commitment to provide the test Due 12/7/10 Item No. 119 states: "the information relied identifies the required test documentation for systems plan and the SPM compliance matrix upon in the SE must be developed using the Common Q SPM. Please provide docketed correspondence."

sufficient information for the NRC staff to independently assess whether the test plan for WBN2 LIC-101 Rev. 3 states: "The PAMS, is as described in the SPM (e.g., Section safety analysis that supports the 5.8.1). change requested should include technical information in sufficient detail to enable the NRC staff to make an independent assessment regarding the acceptability of the proposal in terms of regulatory requirements and the protection of public health and safety."

246 8/3/2010 Responder: WEC 24. Open Open-TVA/WEC EICB RAI LIC-101 Rev. 3 Appendix B EICB (Carte)

ML102980066 Section 4, "Safety Evaluation" Section 4.3.2.1, "Initiation Phase" of the Common Q As agreed ISG6 does not apply to the Common Q Response is provided in letter Due 10/22/10 Item No. 15 states: "the information relied SPM (ML050350234) requires that a Project Quality PAMS platform. The information required to dated 10/25/10 upon in the SE must be Plan (PQP) be developed. Many other section of the address this question concerning the PQP and docketed correspondence."

SPM identify that this PQP should contain information SPM has been added to compliance matrix in required by ISG6. Please provide the PQP. If "PQP" revision 1 of the Licensing Technical Report. LIC-101 Rev. 3 states: "The is not the name of the documentation produced, safety analysis that supports the please describe the documentation produced and Attachment 1 of letter dated 10/25/10 contains the change requested should include provide the information that the SPM states should be proprietary version of Westinghouse document technical information in sufficient in the PQP. Tennessee Valley Authority (TVA), Watts Bar detail to enable the NRC staff to Unit 2 (WBN2), Post-Accident Monitoring System make an independent (PAMS), Licensing Technical Report, Revision 1, assessment regarding the WNA-LI-00058-WBT-P, Dated October 2010 acceptability of the proposal in terms of regulatory requirements and the protection of public health and safety."

247 8/8/2010 Responder: WEC 25. Open Open-TVA/WEC EICB RAI LIC-101 Rev. 3 Appendix B EICB (Carte)

ML102980066 Section 4, "Safety Evaluation" As part of the Common Q topical report development The implementation documents required by the Response is provided in letter Due 10/22/10. Item No. 16 states: "the information relied effort, Westinghouse developed the Software Program SPM are identified in the compliance matrix in dated 10/25/10 upon in the SE must be Manual for Common Q Systems (ML050350234) to revision 1 of the Licensing Technical Report. docketed correspondence."

address software planning documentation. The NRC reviewed the SPM and concluded: the SPM specifies Attachment 1 of letter dated 10/25/10 contains the LIC-101 Rev. 3 states: "The plans that will provide a quality software life cycle proprietary version of Westinghouse document safety analysis that supports the process, and that these plans commit to Tennessee Valley Authority (TVA), Watts Bar change requested should include documentation of life cycle activities that will permit the Unit 2 (WBN2), Post-Accident Monitoring System technical information in sufficient staff or others to evaluate the quality of the design (PAMS), Licensing Technical Report, Revision 1, detail to enable the NRC staff to features upon which the safety determination will be WNA-LI-00058-WBT-P, Dated October 2010 make an independent based. The staff will review the Implementation of the assessment regarding the life cycle process and the software life cycle process acceptability of the proposal in design outputs for specific applications on a plant- terms of regulatory requirements specific basis. Please identify the implementation and the protection of public documentation produced as a result of following the health and safety."

SPM, and state what information will be docketed.

248 8/8/2010 Responder: WEC 26. Open Open-TVA/WEC LIC-101 Rev. 3 Appendix B EICB (Carte)

Section 4, "Safety Evaluation" As part of the Common Q topical report development The documents are identified in the compliance Response is provided in letter Due 10/22/10. states: "the information relied effort, Westinghouse developed the Software Program matrix in revision 1 of the Licensing Technical dated 10/25/10 upon in the SE must be Manual for Common Q Systems (ML050350234) to Report docketed correspondence."

address software planning documentation. The NRC

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date reviewed the SPM and concluded: the SPM specifies Attachment 1 of the letter dated 10/25/10 contains LIC-101 Rev. 3 states: "The plans that will provide a quality software life cycle the proprietary version of Westinghouse safety analysis that supports the process, and that these plans commit to document Tennessee Valley Authority (TVA), change requested should include documentation of life cycle activities that will permit the Watts Bar Unit 2 (WBN2), Post-Accident technical information in sufficient staff or others to evaluate the quality of the design Monitoring System (PAMS), Licensing Technical detail to enable the NRC staff to features upon which the safety determination will be Report, Revision 1, WNA-LI-00058-WBT-P, Dated make an independent based. The staff will review the Implementation of the October 2010 assessment regarding the life cycle process and the software life cycle process acceptability of the proposal in design outputs for specific applications on a plant- terms of regulatory requirements specific basis. Please identify the design outputs and the protection of public produced as a result of following the SPM, and state health and safety."

when what information will be docketed.

250 8/8/2010 Responder: WEC 27. Open Open-TVA/WEC LIC-101 Rev. 3 Appendix B EICB (Carte)

Section 4, "Safety Evaluation" The SPM describes the software and documents that Westinghouse develops Software Release Due 10/22/10 states: "the information relied will be created and placed under configuration control. Reports/Records and a Configuration upon in the SE must be The SCMP (e.g., SPM Section 6, Software Management Release Report. Describe the docketed correspondence."

Configuration Management Plan) describes the documents and when they will be produced.

implementation tasks that are to be carried out. The Summarize guidance on how to produce these LIC-101 Rev. 3 states: "The acceptance criterion for software CM implementation is records, focus on project specific requirements in safety analysis that supports the that the tasks in the SCMP have been carried out in SPM etc. change requested should include their entirety. Documentation should exist that shows technical information in sufficient that the configuration management tasks for that detail to enable the NRC staff to activity group have been successfully accomplished. make an independent Please provide information that shows that the CM assessment regarding the tasks have been successfully accomplished for each acceptability of the proposal in life cycle activity group. terms of regulatory requirements and the protection of public health and safety."

251 8/8/2010 Responder: WEC 28. Open Open-TVA/WEC LIC-101 Rev. 3 Appendix B EICB (Carte)

Section 4, "Safety Evaluation" The SPM describes the software testing and The software testing performed and documents Response is provided in letter Due 10/22/10. states: "the information relied documents that will be created. The SPM also created are addressed by the SPM Compliance dated 10/25/10 upon in the SE must be describes the testing tasks that are to be carried out. matrix contained in Revision 1 of the Licensing docketed correspondence."

The acceptance criterion for software test Technical Report.

implementation is that the tasks in the SPM have been LIC-101 Rev. 3 states: "The carried out in their entirety. Please provide Attachment 1 of the letter dated 10/25/10 contains safety analysis that supports the information that shows that testing been successfully the Proprietary version of Westinghouses change requested should include accomplished. document titled: Tennessee Valley Authority technical information in sufficient (TVA), Watts Bar Unit 2 (WBN2), Post-Accident detail to enable the NRC staff to Monitoring System (PAMS), Licensing Technical make an independent Report, Revision 1, WNA-LI-00058-WBT-P, Dated assessment regarding the October 2010 acceptability of the proposal in terms of regulatory requirements and the protection of public health and safety."

252 8/8/2010 Responder: WEC 29. Open Open-TVA/WEC LIC-101 Rev. 3 Appendix B EICB (Carte)

Section 4, "Safety Evaluation" The SPM contain requirements for software Explain response to AP1000 audit report. Read ML091560352 RTM Revision due states: "the information relied requirements traceability analysis and associated RTM docketed NRC awaiting V&V evaluation of 12/31 upon in the SE must be documentation (see Section 5.4.5.3, Requirements RTM. docketed correspondence."

Traceability Analysis). Please provide information that demonstrates that requirements traceability Check on this LIC-101 Rev. 3 states: "The analysis has been successfully accomplished. Hilmes safety analysis that supports the change requested should include technical information in sufficient detail to enable the NRC staff to make an independent

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) rad14E79.docx Open Items to be Resolved for SER Approval SE FSAR NRC

Response

Acceptable RAI Resp.

No. POC Issue TVA Response(s) Y/N Status/ Current Actions Resolution Path RAI No. & Date Comments Sec. Sec. Date assessment regarding the acceptability of the proposal in terms of regulatory requirements and the protection of public health and safety."

267 8/11/2010 Responder: WEC 30. Open Open-TVA/WEC EICB (Carte)

By letter dated June 18, 2010 (ML101940236) TVA This is addressed in the Licensing Technical Response provided in letter Due 10/22/10 stated that the software safety plan (SSP) was not Report, Revision 1, WNA-LI-00058-WBT-P. dated 10/25/10 applicable to PAMS applications (see Watts Bar 2 -

Common Q PAMS ISG-6 Compliance matrix Item No. Attachment 1 of the letter dated 10/25/10 10); however, reference No. 30 of the SRS contains the Proprietary version of (ML101050202) is: 00000-ICE-37727, Rev. 0, "Post Westinghouses document titled: Tennessee Accident Monitoring System Software Preliminary Valley Authority (TVA), Watts Bar Unit 2 (WBN2),

Hazard Analysis for the Common Q PAMS Project." A Post-Accident Monitoring System (PAMS),

Preliminary Hazard Analysis is required by the SSP. Licensing Technical Report, Revision 1, WNA-LI-Please explain. 00058-WBT-P, Dated October 2010 268 8/19/2010 Responder: WEC 31. Open Open-TVA/WEC EICB (Carte)

By letter dated March 12, 2010 (ML101680577), TVA Andy to see what can be done. Due 12/31/10 stated that the application specific hardware and software architecture descriptions are addressed in the HILMES Check on WBN2 PAMS System Design Specification This (ML101680579, ML102040481, & ML102040482) and Software Requirements Specification (ML101050202, ML102040486, & ML1022040487).

Neither of these documents contain a non-proprietary figure of the architecture that can be used in the SE.

Please provide a non-proprietary figure of the architecture.