ML11286A418

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OL - TVA Letter to NRC_2011-09-15 - Revised Enclosures 3 and 5 for 12-10-2010 Letter
ML11286A418
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Site: Watts Bar Tennessee Valley Authority icon.png
Issue date: 09/15/2011
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- No Known Affiliation
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Division of Operating Reactor Licensing
References
Download: ML11286A418 (35)
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Text

1 WBN2Public Resource From:

Boyd, Desiree L [dlboyd@tva.gov]

Sent:

Thursday, September 15, 2011 3:57 PM To:

Epperson, Dan; Poole, Justin; Raghavan, Rags; Milano, Patrick; Campbell, Stephen Cc:

Crouch, William D; Hamill, Carol L; Boyd, Desiree L

Subject:

TVA letter to NRC_2011-09 Revised Enclosures 3 and 5 for 12-10-2010 Letter Attachments:

2011-09 Revised Enclosures 3 and 5 for 12-10-2010 Letter_Final.pdf Please see attached TVA letter that was sent to the NRC today.

Thank You,

~*~*~*~*~*~*~*~*~*~*~*~

Désireé L. Boyd WBN 2 Licensing Support Sun Technical Services dlboyd@tva.gov 423-365-8764

Hearing Identifier:

Watts_Bar_2_Operating_LA_Public Email Number:

540 Mail Envelope Properties (7AB41F650F76BD44B5BCAB7C0CCABFAF231181C5)

Subject:

TVA letter to NRC_2011-09 Revised Enclosures 3 and 5 for 12-10-2010 Letter Sent Date:

9/15/2011 3:56:50 PM Received Date:

9/15/2011 3:56:55 PM From:

Boyd, Desiree L Created By:

dlboyd@tva.gov Recipients:

"Crouch, William D" <wdcrouch@tva.gov>

Tracking Status: None "Hamill, Carol L" <clhamill@tva.gov>

Tracking Status: None "Boyd, Desiree L" <dlboyd@tva.gov>

Tracking Status: None "Epperson, Dan" <Dan.Epperson@nrc.gov>

Tracking Status: None "Poole, Justin" <Justin.Poole@nrc.gov>

Tracking Status: None "Raghavan, Rags" <Rags.Raghavan@nrc.gov>

Tracking Status: None "Milano, Patrick" <Patrick.Milano@nrc.gov>

Tracking Status: None "Campbell, Stephen" <Stephen.Campbell@nrc.gov>

Tracking Status: None Post Office:

TVANUCXVS2.main.tva.gov Files Size Date & Time MESSAGE 291 9/15/2011 3:56:55 PM 2011-09 Revised Enclosures 3 and 5 for 12-10-2010 Letter_Final.pdf 206611 Options Priority:

Standard Return Notification:

No Reply Requested:

No Sensitivity:

Normal Expiration Date:

Recipients Received:

Tennessee Valley Authority, Post Office Box 2000, Spring City, Tennessee 37381-2000 September 15, 2011 10 CFR 50.4(b) 10 CFR 50.34(b)

U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555-0001 Watts Bar Nuclear Plant, Unit 2 NRC Docket No. 50-391

Subject:

WATTS BAR NUCLEAR PLANT (WBN) UNIT 2 - FINAL SAFETY ANALYSIS REPORT (FSAR) - REVISED ENCLOSURES 3 AND 5 FOR TVA TO NRC LETTER DATED DECEMBER 10, 2010

References:

1. TVA letter to NRC dated December 10, 2010, Watts Bar Nuclear Plant (WBN) Unit 2 - Final Safety Analysis Report (FSAR) -

Response to Requests for Additional Information

2. TVA Letter to NRC dated April 13, 2011, Watts Bar Nuclear Plant (WBN) Unit 2 - Final Safety Analysis Report (FSAR) - Response to Requests for Additional Information (RAIs) Related to FSAR Sections 9.2.1 and 9.2.2 The purpose of this letter is to provide revisions to Enclosures 3 and 5 previously provided in Reference 1, which addressed an NRC request for additional information (RAI). Enclosure 3 entitled, Summary Heat Load and Flow Tables for RAI 9.2-CSS-4, had provided data for the Component Cooling System head loads and flows. entitled, Summary Heat Load and Flow Tables for RAI 9.2.1-ERCW-3, had provided data for the Essential Raw Cooling Water (ERCW) System Train B heat loads and flows.

These revisions are necessary due to minor changes to flow allocations and the identification of errors recently found in the flows and heat loads while reviewing the basis calculations for these values. This condition was documented into TVAs corrective action program as Problem Evaluation Report (PER) 421509. Provided in the enclosure to this letter are the revised enclosures.

U. S. Nuclear Regulatory Commission Page 3 September 15, 2011 bcc (Enclosure):

Stephen Campbell U.S. Nuclear Regulatory Commission MS 08H4A One White Flint North 11555 Rockville Pike Rockville, Maryland 20852-2738 Charles Casto, Deputy Regional Administrator for Construction U. S. Nuclear Regulatory Commission Region II Marquis One Tower 245 Peachtree Center Ave., NE Suite 1200 Atlanta, Georgia 30303-1257

E-1 ENCLOSURE Revised Enclosures 3 and 5 for TVA to NRC Letter dated December 10, 2010

ENCLOSURE 3 Summary Heat Load and Flow Tables for RAI 9.2 - CSS - 4.

Tennessee Valley Authority - Watts Bar Nuclear Plant - Unit 2, Docket No. 50-391 E3 - 1 COMPONENT COOLING SYSTEM INDIVIDUAL LOADS (sheet 1 of 2)

Equipment Heat Load (KBTU/hr)

Flow (gpm)

Containment Spray System Pump Oil Cooler 14.7 2.0 Centrifugal Charging Pump (CCP) Oil Cooler 66.8 28.0 Non-Regenerative Heat Exchanger (Startup) 13,100.0 1,000.0 Non-Regenerative Heat Exchanger (Power Generation) 6,400.0 640.0 Non-Regenerative Heat Exchanger (Hot Standby) 8,350.0 640.0 Non-Regenerative Heat Exchanger (Hot Shutdown) 2,530.0 640.0 Non-Regenerative Heat Exchanger (Cold Shutdown) 1,770.0 640.0 Non-Regenerative Heat Exchanger (All Others) 0.0 0.0 Excess Letdown Heat Exchanger 4,930.0 232.0 Seal Water Heat Exchanger (Startup w/ Offsite Power) 1,160.0 200.0 Seal Water Heat Exchanger (Refueling) 376.0 200.0 Seal Water Heat Exchanger (Power Generation) 1,880.0 200.0 Seal Water Heat Exchanger (Hot Shutdown) 517.0 200.0 Seal Water Heat Exchanger (Hot Standby) 517.0 200.0 Seal Water Heat Exchanger (LOCA-Safety Injection) 418.0 200.0 Seal Water Heat Exchanger (LOCA-Recirculation) 941.0 200.0 Seal Water Heat Exchanger (Cold Shutdown) 1,070.0 200.0 Reactor Coolant Pump Thermal Barrier (each) 439.1 40.0 Reactor Coolant Pump Upper Oil Cooler (each) 736.5 150.0 Reactor Coolant Pump Lower Oil Cooler (each) 24.4 5.0 RHR Pump Seal Water Cooler 100.0 10.0

ENCLOSURE 3 Summary Heat Load and Flow Tables for RAI 9.2 - CSS - 4.

Tennessee Valley Authority - Watts Bar Nuclear Plant - Unit 2, Docket No. 50-391 E3 - 2 COMPONENT COOLING SYSTEM INDIVIDUAL LOADS (sheet 2 of 2)

Equipment Heat Load (KBTU/hr)

Flow (gpm)

RHR Heat Exchanger (Startup) 19,600.0 5,000.0 RHR Heat Exchanger (Hot Shutdown) 5,000.0 RHR Heat Exchanger (Cold Shutdown) 5,000.0 RHR Heat Exchanger (Start of Refueling; Fuel in Vessel) 5,000.0 RHR Heat Exchanger (LOCA-Recirculation) 5,000.0 RHR Heat Exchanger (Other Modes) 1300.0 Spent Fuel Pool Cooling Heat Exchanger (All Fuel Discharged into the SFP) 3,000.0 Safety Injection System Pump Oil Cooler (Unit 2 Only) 46.0 15.0 Sample System Heat Exchanger A 68.4 20.0 Sample System Heat Exchanger B 39.2 28.0 Sample System Heat Exchanger C (Unit 1 Only) 11.6 20.0 Hot Sample Chiller 75.9 22.0 Post Accident Sampling Coolers (Unit 1 Only) 252.0 10.0 Waste Gas Compressor 135.2 50.0 Radiation Monitor 0.0 6.0

  • The heat load for these components is dependent upon combined operating mode. It is accounted for in the overall CCS tables.

ENCLOSURE 3 Summary Heat Load and Flow Tables for RAI 9.2 - CSS - 4.

Tennessee Valley Authority - Watts Bar Nuclear Plant - Unit 2, Docket No. 50-391 E3 - 3 CCS Train A Heat Loads and Flows with Offsite Power Available (sheet 1 of 2)

Unit 1 Operational Modes Op Mode CCS Train Startup Power Hot Shutdown Cold Shutdown Initial Refueling Safety Injection LOCA Recirc Hot Standby Unit 2 Operational Modes Startup 1A (kBTU/hr) 60,910.1 30,300.1 49,376.7 56,860.1 46,046.0 22,520.6 28,955.6 28,487.1 1A (gpm) 10,413.0 4,821.0 6,821.0 9,041.0 8,401.0 4,831.0 6,051.0 4,821.0 2A (kBTU/hr) 63,675.4 44,075.4 80,498.5 63,675.4 63,675.4 44,075.4 80,498.5 44,075.4 2A (gpm) 7,393.0 7,393.0 10,393.0 7,393.0 7,393.0 7,393.0 10,393.0 7,393.0 Power 1A (kBTU/hr) 44,087.0 30,300.1 49,376.7 40,037.0 46,046.0 22,520.6 28,955.6 11,664.0 1A (gpm) 7,413.0 4,821.0 6,821.0 6,041.0 8,401.0 4,831.0 6,051.0 1,821.0 2A (kBTU/hr) 30,288.5 13,465.4 30,288.5 30,288.5 13,465.4 13,465.4 30,288.5 30,288.5 2A (gpm) 4,801.0 1,801.0 4,801.0 4,801.0 1,801.0 1,801.0 4,801.0 4,801.0 Hot Shutdown 1A (kBTU/hr) 80,510.1 30,300.1 N/A 93,560.1 74,396.0 22,520.6 N/A 28,487.1 1A (gpm) 10,413.0 4,821.0 9,041.0 8,401.0 4,831.0 4,821.0 2A (kBTU/hr) 49,365.0 49,365.0 49,365.0 49,365.0 49,365.0 49,365.0 2A (gpm) 6,801.0 6,801.0 6,801.0 6,801.0 6,801.0 6,801.0 Cold Shutdown 1A (kBTU/hr) 80,510.1 30,300.1 49,376.7 56,860.1 74,396.0 22,520.6 28,955.6 28,487.1 1A (gpm) 10,413.0 4,821.0 6,821.0 9,041.0 8,401.0 4,831.0 6,051.0 4,821.0 2A (kBTU/hr) 40,025.4 40,025.4 93,548.5 76,725.4 40,025.4 40,025.4 93,548.4 40,025.4 2A (gpm) 6,021.0 6,021.0 9,021.0 6,021.0 6,021.0 6,021.0 9,021.0 6,021.0

ENCLOSURE 3 Summary Heat Load and Flow Tables for RAI 9.2 - CSS - 4.

Tennessee Valley Authority - Watts Bar Nuclear Plant - Unit 2, Docket No. 50-391 E3 - 4 CCS Train A Heat Loads and Flows with Offsite Power Available (sheet 2 of 2)

Unit 1 Operational Modes Op Mode CCS Train Startup Power Hot Shutdown Cold Shutdown Initial Refueling Safety Injection LOCA Recirc Hot Standby Unit 2 Operational Modes Initial Refueling 1A (kBTU/hr) 63,687.0 13,477.0 49,376.7 40,037.0 46,046.0 5,697.5 28,955.6 11,664.0 1A (gpm) 7,413.0 1,821.0 6,821.0 6,041.0 8,401.0 1,831.0 6,051.0 1,821.0 2A (kBTU/hr) 46,034.4 46,034.5 74,384.4 74,384.5 57,561.5 46,034.4 74,384.4 46,034.4 2A (gpm) 8,381.0 8,381.0 8,381.0 8,381.0 5,381.0 8,381.0 8,381.0 8,381.0 Safety Injection 1A (kBTU/hr) 44,087.0 30,300.1 49,376.7 40,037.0 46,046.0 N/A N/A 11,664.0 1A (gpm) 7,413.0 4,821.0 6,821.0 6,041.0 8,401.0 1,821.0 2A (kBTU/hr) 22,268.6 5,445.5 22,268.6 22,268.6 5,445.5 22,268.6 2A (gpm) 4,801.0 1,801.0 4,801.0 4,801.0 1,801.0 4,801.0 LOCA Recirc 1A (kBTU/hr) 80,510.1 30,300.1 N/A 93,560.1 74,396.0 N/A N/A 28,487.1 1A (gpm) 10,413.0 4,821.0 9,041.0 8,401.0 4,821.0 2A (kBTU/hr) 28,703.7 28,703.6 28,703.7 28,703.7 28,703.6 2A (gpm) 6,021.0 6,021.0 6,021.0 6,021.0 6,021.0 Hot Standby 1A (kBTU/hr) 44,087.0 30,300.1 49,376.7 40,037.0 46,046.0 22,520.6 28,955.6 28,487.1 1A (gpm) 7,413.0 4,821.0 6,821.0 6,041.0 8,401.0 4,831.0 6,051.0 4,821.0 2A (kBTU/hr) 28,475.5 11,652.4 28,475.5 28,475.5 11,652.4 11,652.4 28,475.5 11,652.4 2A (gpm) 4,801.0 1,801.0 4,801.0 4,801.0 1,801.0 1,801.0 4,801.0 1,801.0

ENCLOSURE 3 Summary Heat Load and Flow Tables for RAI 9.2 - CSS - 4.

Tennessee Valley Authority - Watts Bar Nuclear Plant - Unit 2, Docket No. 50-391 E3 - 5 CCS Train A Heat Loads and Flows with LOOP and Loss of Train B (sheet 1 of 2)

Unit 1 Operational Modes Op Mode CCS Train Startup Power Hot Shutdown Cold Shutdown Initial Refueling Safety Injection LOCA Recirc Hot Standby Unit 2 Operational Modes Startup 1A (kBTU/hr)

N/A N/A N/A N/A N/A N/A N/A N/A 1A (gpm) 2A (kBTU/hr) 2A (gpm)

Power 1A (kBTU/hr)

N/A N/A N/A N/A N/A N/A N/A N/A 1A (gpm) 2A (kBTU/hr) 2A (gpm)

Hot Shutdown 1A (kBTU/hr)

N/A N/A N/A 93,229.8 74,065.8 17,720.5 N/A 25,756.8 1A (gpm) 9,401.0 9,401.0 4,411.0 4,401.0 2A (kBTU/hr) 92,479.0 92,479.0 92,479.0 92,479.0 2A (gpm) 6,381.0 6,381.0 6,381.0 6,381.0 Cold Shutdown 1A (kBTU/hr)

N/A N/A 92,479.0 93,229.8 74,065.8 17,720.5 56,220.5 25,756.8 1A (gpm) 6,401.0 9,401.0 9,401.0 4,411.0 6,411.0 4,401.0 2A (kBTU/hr) 93,229.8 76,406.8 76,406.8 76,406.8 93,229.9 76,406.8 2A (gpm) 9,381.0 6,381.0 6,381.0 6,381.0 9,381.0 6,381.0

ENCLOSURE 3 Summary Heat Load and Flow Tables for RAI 9.2 - CSS - 4.

Tennessee Valley Authority - Watts Bar Nuclear Plant - Unit 2, Docket No. 50-391 E3 - 6 CCS Train A Heat Loads and Flows with LOOP and Loss of Train B (sheet 2 of 2)

Unit 1 Operational Modes Op Mode CCS Train Startup Power Hot Shutdown Cold Shutdown Initial Refueling Safety Injection LOCA Recirc Hot Standby Unit 2 Operational Modes Initial Refueling 1A (kBTU/hr)

N/A N/A 92,479.0 76,406.8 74,065.8 17,720.5 56,220.5 8,933.8 1A (gpm) 6,401.0 6,401.0 9,401.0 1,411.0 6,411.0 1,401.0 2A (kBTU/hr) 74,065.8 74,065.8 57,242.8 57,242.8 74,065.8 74,065.8 2A (gpm) 9,381.0 9,381.0 6,381.0 9,381.0 9,381.0 9,381.0 Safety Injection 1A (kBTU/hr)

N/A N/A 92,479.0 76,406.8 74,065.8 N/A N/A 8,933.8 1A (gpm) 6,401.0 6,401.0 9,401.0 1,401.0 2A (kBTU/hr) 17,468.5 17,468.6 645.5 17,468.6 2A (gpm) 4,381.0 4,381.0 1,381.0 4,381.0 LOCA Recirc 1A (kBTU/hr)

N/A N/A N/A 93,229.8 74,065.8 N/A N/A 25,756.8 1A (gpm) 9,401.0 9,401.0 4,401.0 2A (kBTU/hr) 56,103.6 56,103.6 56,103.6 2A (gpm) 6,381.0 6,381.0 6,381.0 Hot Standby 1A (kBTU/hr)

N/A N/A 92,479.0 93,229.8 74,065.8 17,720.5 56,220.5 25,756.8 1A (gpm) 6,401.0 9,401.0 9,401.0 4,411.0 6,411.0 4,401.0 2A (kBTU/hr) 25,892.0 9,068.9 9,068.9 9,068.9 25,892.0 9,068.9 2A (gpm) 4,381.0 1,381.0 1,381.0 1,381.0 4,381.0 1,381.0

ENCLOSURE 3 Summary Heat Load and Flow Tables for RAI 9.2 - CSS - 4.

Tennessee Valley Authority - Watts Bar Nuclear Plant - Unit 2, Docket No. 50-391 E3 - 7 CCS Train B Heat Loads and Flows with Offsite Power Available (sheet 1 of 3)

Unit 1 Operational Modes Op Mode CCS Train Startup Power Hot Shutdown Cold Shutdown Initial Refueling Safety Injection LOCA Recirc Hot Standby Unit 2 Operational Modes Startup 1B (kBTU/hr) 19,766.8 66.8 44,799.4 36,866.8 28,516.8 227.5 27,627.5 66.8 2B (kBTU/hr) 166.8 19,766.0 166.8 166.8 166.8 19,766.0 166.8 19,766.0 B Total 19,933.6 19,832.8 44,966.2 37,033.6 28,683.6 19,993.5 27,794.3 19,832.8 1B (gpm) 5,061.0 1,361.0 5,061.0 5,061.0 5,061.0 1,361.0 5,061.0 1,361.0 2B (gpm) 1,355.0 5,055.0 1,355.0 1,355.0 1,355.0 5,055.0 1,355.0 5,055.0 B Total 6,416.0 6,416.0 6,416.0 6,416.0 6,416.0 6,416.0 6,416.0 6,416.0 Power 1B (kBTU/hr) 19,766.8 66.8 44,799.4 36,866.8 28,516.8 227.5 27,627.5 66.8 2B (kBTU/hr) 66.8 66.8 66.8 66.8 66.8 66.8 66.8 66.8 B Total 19,833.6 133.6 44,866.2 36,933.6 28,583.6 294.3 27,694.3 133.6 1B (gpm) 5,061.0 1,361.0 5,061.0 5,061.0 5,061.0 1,361.0 5,061.0 1,361.0 2B (gpm) 1,355.0 1,355.0 1,355.0 1,355.0 1,355.0 1,355.0 1,355.0 1,355.0 B Total 6,416.0 2,716.0 6,416.0 6,416.0 6,416.0 2,716.0 6,416.0 2,716.0 Hot Shutdown 1B (kBTU/hr) 166.8 66.8 N/A 166.8 166.8 227.5 N/A 66.8 2B (kBTU/hr) 44,799.4 44,799.4 44,799.4 44,799.4 44,799.4 44,799.4 B Total 44,966.2 44,866.2 44,966.2 44,966.2 45,026.9 44,866.2 1B (gpm) 1,361.0 1,361.0 1,361.0 1,361.0 1,361.0 1,361.0 2B (gpm) 5,055.0 5,055.0 5,055.0 5,055.0 5,055.0 5,055.0 B Total 6,416.0 6,416.0 6,416.0 6,416.0 6,416.0 6,416.0

ENCLOSURE 3 Summary Heat Load and Flow Tables for RAI 9.2 - CSS - 4.

Tennessee Valley Authority - Watts Bar Nuclear Plant - Unit 2, Docket No. 50-391 E3 - 8 CCS Train B Heat Loads and Flows with Offsite Power Available (sheet 2 of 3)

Unit 1 Operational Modes Op Mode CCS Train Startup Power Hot Shutdown Cold Shutdown Initial Refueling Safety Injection LOCA Recirc Hot Standby Unit 2 Operational Modes Cold Shutdown 1B (kBTU/hr) 166.8 66.8 44,799.4 36,866.8 166.8 227.5 27,627.5 66.8 2B (kBTU/hr) 36,866.8 36,866.8 166.8 166.8 36,866.8 36,866.8 166.8 36,866.8 B Total 37,033.6 36,933.6 44,966.2 37,033.6 37,033.6 37,094.3 27,794.3 36,933.6 1B (gpm) 1,361.0 1,361.0 5,061.0 5,061.0 1,361.0 1,361.0 5,061.0 1,361.0 2B (gpm) 5,055.0 5,055.0 1,355.0 1,355.0 5,055.0 5,055.0 1,355.0 5,055.0 B Total 6,416.0 6,416.0 6,416.0 6,416.0 6,416.0 6,416.0 6,416.0 6,416.0 Initial Refueling 1B (kBTU/hr) 166.8 66.8 44,799.4 36,866.8 28,516.8 227.5 27,627.5 66.8 2B (kBTU/hr) 28,516.8 28,516.8 166.8 166.8 166.8 28,516.8 166.8 28,516.8 B Total 28,683.6 28,583.6 44,966.2 37,033.6 28,683.6 28,744.3 27,794.3 28,583.6 1B (gpm) 1,361.0 1,361.0 5,061.0 5,061.0 5,061.0 1,361.0 5,061.0 1,361.0 2B (gpm) 5,055.0 5,055.0 1,355.0 1,355.0 1,355.0 5,055.0 1,355.0 5,055.0 B Total 6,416.0 6,416.0 6,416.0 6,416.0 6,416.0 6,416.0 6,416.0 6,416.0 Safety Injection 1B (kBTU/hr) 19,766.8 66.8 44,799.4 36,866.8 28,516.8 N/A N/A 66.8 2B (kBTU/hr) 227.5 227.5 227.5 227.5 227.5 227.5 B Total 19,994.3 294.3 45,026.9 37,094.3 28,744.3 294.3 1B (gpm) 5,061.0 1,361.0 5,061.0 5,061.0 5,061.0 1,361.0 2B (gpm) 1,355.0 1,355.0 1,355.0 1,355.0 1,355.0 1,355.0 B Total 6,416.0 2,716.0 6,416.0 6,416.0 6,416.0 2,716.0

ENCLOSURE 3 Summary Heat Load and Flow Tables for RAI 9.2 - CSS - 4.

Tennessee Valley Authority - Watts Bar Nuclear Plant - Unit 2, Docket No. 50-391 E3 - 9 CCS Train B Heat Loads and Flows with Offsite Power Available (sheet 3 of 3)

Unit 1 Operational Modes Op Mode CCS Train Startup Power Hot Shutdown Cold Shutdown Initial Refueling Safety Injection LOCA Recirc Hot Standby Unit 2 Operational Modes LOCA Recirc 1B (kBTU/hr) 166.8 66.8 N/A 166.8 166.8 N/A N/A 66.8 2B (kBTU/hr) 27,627.5 27,627.5 27,627.5 27,627.5 27,627.5 B Total 27,794.3 27,694.3 27,794.3 27,794.3 27,694.3 1B (gpm) 1,361.0 1,361.0 1,361.0 1,361.0 1,361.0 2B (gpm) 5,055.0 5,055.0 5,055.0 5,055.0 5,055.0 B Total 6,416.0 6,416.0 6,416.0 6,416.0 6,416.0 Hot Standby 1B (kBTU/hr) 19,766.8 66.8 44,799.4 36,866.8 28,516.8 227.5 27,627.5 66.8 2B (kBTU/hr) 66.8 66.8 66.8 66.8 66.8 66.8 66.8 66.8 B Total 19,833.6 133.6 44,866.2 36,933.6 28,583.6 294.3 27,694.3 133.6 1B (gpm) 5,061.0 1,361.0 5,061.0 5,061.0 5,061.0 1,361.0 5,061.0 1,361.0 2B (gpm) 1,355.0 1,355.0 1,355.0 1,355.0 1,355.0 1,355.0 1,355.0 1,355.0 B Total 6,416.0 2,716.0 6,416.0 6,416.0 6,416.0 2,716.0 6,416.0 2,716.0

ENCLOSURE 3 Summary Heat Load and Flow Tables for RAI 9.2 - CSS - 4.

Tennessee Valley Authority - Watts Bar Nuclear Plant - Unit 2, Docket No. 50-391 E3 - 10 CCS Train B Heat Loads and Flows with LOOP and Loss of Train A (sheet 1 of 3)

Unit 1 Operational Modes Op Mode CCS Train Startup Power Hot Shutdown Cold Shutdown Initial Refueling Safety Injection LOCA Recirc Hot Standby Unit 2 Operational Modes Startup 1B (kBTU/hr)

N/A N/A N/A N/A N/A N/A N/A N/A 2B (kBTU/hr)

B Total 1B (gpm) 2B (gpm)

B Total Power 1B (kBTU/hr)

N/A N/A N/A N/A N/A N/A N/A N/A 2B (kBTU/hr)

B Total 1B (gpm) 2B (gpm)

B Total Hot Shutdown 1B (kBTU/hr)

N/A N/A N/A 73,701.9 57,001.9 362.6 N/A 201.9 2B (kBTU/hr) 89,432.0 89,432.0 89,432.0 89,432.0 B Total 163,133.9 146,433.9 89,794.6 89,633.9 1B (gpm) 5,111.0 5,111.0 1,411.0 1,411.0 2B (gpm) 5,055.0 5,055.0 5,055.0 5,055.0 B Total 10,166.0 10,166.0 6,466.0 6,466.0

ENCLOSURE 3 Summary Heat Load and Flow Tables for RAI 9.2 - CSS - 4.

Tennessee Valley Authority - Watts Bar Nuclear Plant - Unit 2, Docket No. 50-391 E3 - 11 CCS Train B Heat Loads and Flows with LOOP and Loss of Train A (sheet 2 of 3)

Unit 1 Operational Modes Op Mode CCS Train Startup Power Hot Shutdown Cold Shutdown Initial Refueling Safety Injection LOCA Recirc Hot Standby Unit 2 Operational Modes Cold Shutdown 1B (kBTU/hr)

N/A N/A 89,567.1 73,701.9 57,001.9 362.6 55,162.6 201.9 2B (kBTU/hr) 73,566.8 73,566.8 73,566.8 73,566.8 73,566.8 73,566.8 B Total 163,133.9 147,268.7 130,568.7 73,929.4 128,729.4 73,768.7 1B (gpm) 5,111.0 5,111.0 5,111.0 1,411.0 5,111.0 1,411.0 2B (gpm) 5,055.0 5,055.0 5,055.0 5,055.0 5,055.0 5,055.0 B Total 10,166.0 10,166.0 10,166.0 6,466.0 10,166.0 6,466.0 Initial Refueling 1B (kBTU/hr)

N/A N/A 89,567.1 73,701.9 57,001.9 362.6 55,162.6 201.9 2B (kBTU/hr) 56,866.8 56,866.8 56,866.8 56,866.8 56,866.8 56,866.8 B Total 146,433.9 130,568.7 113,868.7 57,229.4 112,029.4 57,068.7 1B (gpm) 5,111.0 5,111.0 5,111.0 1,411.0 5,111.0 1,411.0 2B (gpm) 5,055.0 5,055.0 5,055.0 5,055.0 5,055.0 5,055.0 B Total 10,166.0 10,166.0 10,166.0 6,466.0 10,166.0 6,466.0 Safety Injection 1B (kBTU/hr)

N/A N/A 89,567.1 73,701.9 57,001.9 N/A N/A 201.9 2B (kBTU/hr) 227.5 227.5 227.5 227.5 B Total 89,794.6 73,929.4 57,229.4 429.4 1B (gpm) 5,111.0 5,111.0 5,111.0 1,411.0 2B (gpm) 1,355.0 1,355.0 1,355.0 1,355.0 B Total 6,466.0 6,466.0 6,466.0 2,766.0

ENCLOSURE 3 Summary Heat Load and Flow Tables for RAI 9.2 - CSS - 4.

Tennessee Valley Authority - Watts Bar Nuclear Plant - Unit 2, Docket No. 50-391 E3 - 12 CCS Train B Heat Loads and Flows with LOOP and Loss of Train A (sheet 3 of 3)

Unit 1 Operational Modes Op Mode CCS Train Startup Power Hot Shutdown Cold Shutdown Initial Refueling Safety Injection LOCA Recirc Hot Standby Unit 2 Operational Modes LOCA Recirc 1B (kBTU/hr)

N/A N/A N/A 65,351.9 57,001.9 N/A N/A 201.9 2B (kBTU/hr) 55,027.5 55,027.5 55,027.5 B Total 120,379.4 112,029.4 55,229.4 1B (gpm) 5,111.0 5,111.0 1,411.0 2B (gpm) 5,055.0 5,055.0 5,055.0 B Total 10,166.0 10,166.0 6,466.0 Hot Standby 1B (kBTU/hr)

N/A N/A 89,567.1 73,701.9 57,001.9 362.6 55,162.6 201.9 2B (kBTU/hr) 166.8 166.8 166.8 166.8 166.8 166.8 B Total 89,733.9 73,868.7 57,168.7 529.4 55,329.4 368.7 1B (gpm) 5,111.0 5,111.0 5,111.0 1,411.0 5,111.0 1,411.0 2B (gpm) 1,355.0 1,355.0 1,355.0 1,355.0 1,355.0 1,355.0 B Total 6,466.0 6,466.0 6,466.0 2,766.0 6,466.0 2,766.0

ENCLOSURE 5 Summary Heat Load and Flow Tables for RAI 9.2.1 - ERCW - 3.

Tennessee Valley Authority - Watts Bar Nuclear Plant - Unit 2, Docket No. 50-391 E5 - 1 ESSENTIAL RAW COOLING WATER SYSTEM INDIVIDUAL LOADS (sheet 1 of 2)

Equipment Heat Load (KBTU/hr)

Flow (gpm)

Motor Driven Pump 0.0 445.0 Turbine Driven Pump 0.0 780.0 Electric Board Room A/C 2,496.0 370.0 Main Control Room A/C 2,496.0 293.0 Shutdown Board Room A/C 2,971.0 560.0 Aux Control Air Compressor 60.5 3.5 Comp Cooling Heat Exchanger 0.0 Variable Surge Tank 0.0 Variable Containment Spray Heat Exchanger 116,400.0 5,200.0 Cooling Water Pump negligible 6.0 Prelube Pump 0.0 0.8 Screen Wash Pump Prelube 0.0 10.0 Strainer (Backwash/Flush) 0.0 N/A Ice Machine Package Chlr (Flood Mode Only) 3,000.0 220.0 RCP Motor Cooler 880.7 110.0 RCP Thermal Barrier (Flood Mode Only) 0.0 40.0 RHR Heat Exchanger (Flood Mode Only) 37,400.0 5,000.0 Station Air Compressor A, B, C (Aftercoolers) 173.1 12.4 Station Air Compressor D 368.1 96.3 Diesel Generator Hxs 7,125.0 1,300.0 Spent Fuel Pool Heat Exchanger (Flood Mode Only) 11,940.0 3,000.0 Gross Failed Fuel Detector 0.0 14.0 Hot Sample Chiller (Flood Mode Only) 60.0 20.0 Sample Heat Exchanger A (Flood Mode Only) 0.0 20.0 Sample Heat Exchanger B (Flood Mode Only) 0.0 28.0

ENCLOSURE 5 Summary Heat Load and Flow Tables for RAI 9.2.1 - ERCW - 3.

Tennessee Valley Authority - Watts Bar Nuclear Plant - Unit 2, Docket No. 50-391 E5 - 2 ESSENTIAL RAW COOLING WATER SYSTEM INDIVIDUAL LOADS (sheet 2 of 2)

Equipment Heat Load (KBTU/hr)

Flow (gpm)

Sample Heat Exchanger C (Flood Mode Only) 0.0 20.0 Titration Room (Flood Mode Only) 60.0 145.0 AFW & BATP Space Cooler 298.0 60.0 AFW & CCS Pump Space Cooler 592.6 102.0 Containment Spray Pump Room Cooler 163.2 28.0 CVCS CCP Room Cooler 123.0 25.0 CVCS RCP Room Cooler 57.5 12.0 EGTS Room Cooler 49.0 10.0 RB Instrument Room Water Chiller 105.0 30.0 Penetration Room Cooler 1 (Unit 1) 59.5 12.0 Penetration Room Cooler 1 (Unit 2) 56.5 12.0 Penetration Room Cooler 2 (El 713) Unit 1 & 2 52.5 11.0 Penetration Room Cooler 3 (El 737) Unit 1 & 2 58.0 12.0 Pipe Chase Cooler 72.0 15.0 RHR Pump Room Cooler 92.5 19.0 SFPCS & TBBP Space Cooler 141.5 29.0 SIS Pump Room Cooler 105.0 22.0 Control Rod Drive Mechanism Cooler 1,934.4 124.0 Lower Containment Vent Cooler 2,262.4 306.0 Upper Containment Vent Cooler 210.8 23.0 Station Air Compressors A, B, C (Cylinder) 205.7 16.5

ENCLOSURE 5 Summary Heat Load and Flow Tables for RAI 9.2.1 - ERCW - 3.

Tennessee Valley Authority - Watts Bar Nuclear Plant - Unit 2, Docket No. 50-391 E5 - 3 ERCW Train A Heat Loads and Flows with Offsite Power Available (sheet 1 of 4)

Unit 1 Operational Modes Op Mode CCS Train Startup Power Hot Shutdown Cold Shutdown Initial Refueling Safety Injection LOCA Recirc Hot Standby Unit 2 Operational Modes Startup CCS A (kBTU/hr) 60,910 30,300 49,377 56,860 46,046 22,521 28,956 28,487 CCS B (kBTU/hr) 63,675 44,075 80,499 63,675 63,675 44,075 80,499 44,075 Other (kBTU/hr) 29,387 29,387 28,506 23,756 23,756 59,078 165,064 29,387 Total Load 153,972 103,762 158,382 144,291 133,477 125,674 274,519 101,949 CCS A (gpm) 5,850 3,330 6,650 6,200 4,560 1,810 2,900 3,190 CCS B (gpm) 5,850 5,850 5,850 5,850 5,850 5,850 5,850 5,850 Other (gpm) 4,148 4,148 4,038 3,680 3,680 6,740 10,842 4,148 Total Flow 15,848 13,328 16,538 15,730 14,090 14,400 19,592 13,188 Power CCS A (kBTU/hr) 44,087 30,300 49,377 40,037 46,046 22,521 28,956 11,664 CCS B (kBTU/hr) 30,289 13,465 30,289 30,289 13,465 13,465 30,289 30,289 Other (kBTU/hr) 29,436 29,436 28,555 23,805 23,805 59,127 165,113 29,436 Total Load 103,812 73,201 108,221 94,131 83,316 95,113 224,358 71,389 CCS A (gpm) 5,850 3,330 6,650 6,200 4,560 1,810 2,900 3,190 CCS B (gpm) 3,330 3,330 3,330 3,330 3,330 3,330 3,330 3,330 Other (gpm) 4,158 4,158 4,048 3,690 3,690 6,750 10,852 4,158 Total Flow 13,338 10,818 14,028 13,220 11,580 11,890 17,082 10,678

ENCLOSURE 5 Summary Heat Load and Flow Tables for RAI 9.2.1 - ERCW - 3.

Tennessee Valley Authority - Watts Bar Nuclear Plant - Unit 2, Docket No. 50-391 E5 - 4 ERCW Train A Heat Loads and Flows with Offsite Power Available (sheet 2 of 4)

Unit 1 Operational Modes Op Mode CCS Train Startup Power Hot Shutdown Cold Shutdown Initial Refueling Safety Injection LOCA Recirc Hot Standby Unit 2 Operational Modes Hot Shutdown CCS A (kBTU/hr) 80,510 30,300 N/A 93,560 74,396 22,521 N/A 28,487 CCS B (kBTU/hr) 49,365 49,365 49,365 49,365 49,365 49,365 Other (kBTU/hr) 28,555 28,555 22,925 22,925 58,246 28,555 Total Load 158,430 108,220 165,850 146,686 130,132 106,407 CCS A (gpm) 5,850 3,330 6,200 4,560 1,810 3,190 CCS B (gpm) 6,650 6,650 6,650 6,650 6,650 6,650 Other (gpm) 4,048 4,048 3,580 3,580 6,640 4,048 Total Flow 16,548 14,028 16,430 14,790 15,100 13,888 Cold Shutdown CCS A (kBTU/hr) 80,510 30,300 49,377 56,860 74,396 22,521 28,956 28,487 CCS B (kBTU/hr) 40,025 40,025 93,549 76,725 40,025 40,025 93,548 40,025 Other (kBTU/hr) 23,805 23,805 22,925 18,175 18,175 53,497 159,483 23,805 Total Load 144,340 94,130 165,851 151,760 132,596 116,043 281,987 92,317 CCS A (gpm) 5,850 3,330 6,650 6,200 4,560 1,810 2,900 3,190 CCS B (gpm) 6,200 6,200 6,200 6,200 6,200 6,200 6,200 6,200 Other (gpm) 3,690 3,690 3,580 3,222 3,222 6,282 10,384 3,690 Total Flow 15,740 13,220 16,430 15,622 13,982 14,292 19,484 13,080

ENCLOSURE 5 Summary Heat Load and Flow Tables for RAI 9.2.1 - ERCW - 3.

Tennessee Valley Authority - Watts Bar Nuclear Plant - Unit 2, Docket No. 50-391 E5 - 5 ERCW Train A Heat Loads and Flows with Offsite Power Available (sheet 3 of 4)

Unit 1 Operational Modes Op Mode CCS Train Startup Power Hot Shutdown Cold Shutdown Initial Refueling Safety Injection LOCA Recirc Hot Standby Unit 2 Operational Modes Initial Refueling CCS A (kBTU/hr) 63,687 13,477 49,377 40,037 46,046 5,698 28,956 11,664 CCS B (kBTU/hr) 46,034 46,035 74,384 74,385 57,562 46,034 74,384 46,034 Other (kBTU/hr) 23,805 23,805 22,925 18,175 18,175 53,497 159,483 23,805 Total Load 133,526 83,317 146,686 132,597 121,783 105,229 262,823 81,503 CCS A (gpm) 5,850 3,330 6,650 6,200 4,560 1,810 2,900 3,190 CCS B (gpm) 4,560 4,560 4,560 4,560 4,560 4,560 4,560 4,560 Other (gpm) 3,690 3,690 3,580 3,222 3,222 6,282 10,384 3,690 Total Flow 14,100 11,580 14,790 13,982 12,342 12,652 17,844 11,440 Safety Injection CCS A (kBTU/hr) 44,087 30,300 49,377 40,037 46,046 N/A N/A 11,664 CCS B (kBTU/hr) 22,269 5,446 22,269 22,269 5,446 22,269 Other (kBTU/hr) 30,191 30,191 29,310 24,561 24,561 30,191 Total Load 96,547 65,937 100,956 86,867 76,053 64,124 CCS A (gpm) 5,850 3,330 6,650 6,200 4,560 3,190 CCS B (gpm) 1,810 1,810 1,810 1,810 1,810 1,810 Other (gpm) 6,750 6,750 6,640 6,282 6,282 6,750 Total Flow 14,410 11,890 15,100 14,292 12,652 11,750

ENCLOSURE 5 Summary Heat Load and Flow Tables for RAI 9.2.1 - ERCW - 3.

Tennessee Valley Authority - Watts Bar Nuclear Plant - Unit 2, Docket No. 50-391 E5 - 6 ERCW Train A Heat Loads and Flows with Offsite Power Available (sheet 4 of 4)

Unit 1 Operational Modes Op Mode CCS Train Startup Power Hot Shutdown Cold Shutdown Initial Refueling Safety Injection LOCA Recirc Hot Standby Unit 2 Operational Modes LOCA Recirc CCS A (kBTU/hr) 80,510 30,300 N/A 93,560 74,396 N/A N/A 28,487 CCS B (kBTU/hr) 28,704 28,704 28,704 28,704 28,704 Other (kBTU/hr) 136,177 136,177 130,547 130,547 136,177 Total Load 245,391 195,181 252,811 233,647 193,368 CCS A (gpm) 5,850 3,330 6,200 4,560 3,190 CCS B (gpm) 2,900 2,900 2,900 2,900 2,900 Other (gpm) 10,852 10,852 10,384 10,384 10,852 Total Flow 19,602 17,082 19,484 17,844 16,942 Hot Standby CCS A (kBTU/hr) 44,087 30,300 49,377 40,037 46,046 22,521 28,956 28,487 CCS B (kBTU/hr) 28,476 11,652 28,476 28,476 11,652 11,652 28,476 11,652 Other (kBTU/hr) 29,436 29,436 28,555 23,805 23,805 59,127 165,113 29,436 Total Load 101,999 71,388 106,408 92,318 81,503 93,300 222,545 69,575 CCS A (gpm) 5,850 3,330 6,650 6,200 4,560 1,810 2,900 3,190 CCS B (gpm) 3,190 3,190 3,190 3,190 3,190 3,190 3,190 3,190 Other (gpm) 4,158 4,158 4,048 3,690 3,690 6,750 10,852 4,158 Total Flow 13,198 10,678 13,888 13,080 11,440 11,750 16,942 10,538

ENCLOSURE 5 Summary Heat Load and Flow Tables for RAI 9.2.1 - ERCW - 3.

Tennessee Valley Authority - Watts Bar Nuclear Plant - Unit 2, Docket No. 50-391 E5 - 7 ERCW Train A Heat Loads and Flows with LOOP and Loss of Train B (sheet 1 of 4)

Unit 1 Operational Modes Op Mode ERCW Loads and Flows Startup Power Hot Shutdown Cold Shutdown Initial Refueling Safety Injection LOCA Recirc Hot Standby Unit 2 Operational Modes Startup CCS A (kBTU/hr)

N/A N/A N/A N/A N/A N/A N/A N/A CCS B (kBTU/hr)

Other (kBTU/hr)

Total Load CCS A (gpm)

CCS B (gpm)

Other (gpm)

Total Flow Power CCS A (kBTU/hr)

N/A N/A N/A N/A N/A N/A N/A N/A CCS B (kBTU/hr)

Other (kBTU/hr)

Total Load CCS A (gpm)

CCS B (gpm)

Other (gpm)

Total Flow

ENCLOSURE 5 Summary Heat Load and Flow Tables for RAI 9.2.1 - ERCW - 3.

Tennessee Valley Authority - Watts Bar Nuclear Plant - Unit 2, Docket No. 50-391 E5 - 8 ERCW Train A Heat Loads and Flows with LOOP and Loss of Train B (sheet 2 of 4)

Unit 1 Operational Modes Op Mode ERCW Loads and Flows Startup Power Hot Shutdown Cold Shutdown Initial Refueling Safety Injection LOCA Recirc Hot Standby Unit 2 Operational Modes Hot Shutdown CCS A (kBTU/hr)

N/A N/A N/A 93,230 74,066 17,721 N/A 25,757 CCS B (kBTU/hr) 92,479 92,479 92,479 92,479 Other (kBTU/hr) 51,648 51,648 55,517 55,517 Total Load 237,357 218,193 165,716 173,752 CCS A (gpm) 5,650 5,000 1,430 2,740 CCS B (gpm) 6,900 6,900 6,900 6,900 Other (gpm) 6,828 6,828 7,068 7,076 Total Flow 19,378 18,728 15,398 16,716 Cold Shutdown CCS A (kBTU/hr)

N/A N/A 92,479 93,230 74,066 17,721 56,221 25,757 CCS B (kBTU/hr) 93,230 76,407 76,407 76,407 93,230 76,407 Other (kBTU/hr) 51,648 47,779 47,779 51,648 159,817 51,648 Total Load 237,357 217,416 198,252 145,775 309,267 153,811 CCS A (gpm) 6,900 5,650 5,000 1,430 4,400 2,740 CCS B (gpm) 5,850 5,850 5,850 5,850 5,850 5,850 Other (gpm) 6,828 6,580 6,580 6,820 11,188 6,828 Total Flow 19,578 18,080 17,430 14,100 21,438 15,418

ENCLOSURE 5 Summary Heat Load and Flow Tables for RAI 9.2.1 - ERCW - 3.

Tennessee Valley Authority - Watts Bar Nuclear Plant - Unit 2, Docket No. 50-391 E5 - 9 ERCW Train A Heat Loads and Flows with LOOP and Loss of Train B (sheet 3 of 4)

Unit 1 Operational Modes Op Mode ERCW Loads and Flows Startup Power Hot Shutdown Cold Shutdown Initial Refueling Safety Injection LOCA Recirc Hot Standby Unit 2 Operational Modes Initial Refueling CCS A (kBTU/hr)

N/A N/A 92,479 76,407 74,066 17,721 56,221 8,934 CCS B (kBTU/hr) 74,066 74,066 57,243 57,243 74,066 74,066 Other (kBTU/hr) 51,648 47,779 47,779 51,648 159,817 51,648 Total Load 218,193 198,252 179,088 126,611 290,103 134,647 CCS A (gpm) 6,900 5,650 5,000 1,430 4,400 2,740 CCS B (gpm) 5,000 5,000 5,000 5,000 5,000 5,000 Other (gpm) 6,828 6,580 6,580 6,820 11,188 6,828 Total Flow 18,728 17,230 16,580 13,250 20,588 14,568 Safety Injection CCS A (kBTU/hr)

N/A N/A 92,479 76,407 74,066 N/A N/A 8,934 CCS B (kBTU/hr) 17,469 17,469 646 17,469 Other (kBTU/hr) 55,517 51,648 51,648 55,517 Total Load 165,464 145,523 126,359 81,919 CCS A (gpm) 6,900 5,650 5,000 2,740 CCS B (gpm) 1,430 1,430 1,430 1,430 Other (gpm) 7,068 6,820 6,820 7,068 Total Flow 15,398 13,900 13,250 11,238

ENCLOSURE 5 Summary Heat Load and Flow Tables for RAI 9.2.1 - ERCW - 3.

Tennessee Valley Authority - Watts Bar Nuclear Plant - Unit 2, Docket No. 50-391 E5 - 10 ERCW Train A Heat Loads and Flows with LOOP and Loss of Train B (sheet 4 of 4)

Unit 1 Operational Modes Op Mode ERCW Loads and Flows Startup Power Hot Shutdown Cold Shutdown Initial Refueling Safety Injection LOCA Recirc Hot Standby Unit 2 Operational Modes LOCA Recirc CCS A (kBTU/hr)

N/A N/A N/A 93,230 74,066 N/A N/A 25,757 CCS B (kBTU/hr) 56,104 56,104 56,104 Other (kBTU/hr) 159,817 159,817 163,685 Total Load 309,150 289,986 245,546 CCS A (gpm) 5,650 5,000 2,740 CCS B (gpm) 4,400 4,400 4,400 Other (gpm) 11,188 11,188 11,436 Total Flow 21,238 20,588 18,576 Hot Standby CCS A (kBTU/hr)

N/A N/A 92,479 93,230 74,066 17,721 56,221 25,757 CCS B (kBTU/hr) 25,892 9,069 9,069 9,069 25,892 9,069 Other (kBTU/hr) 55,517 51,648 51,648 55,517 163,685 55,517 Total Load 173,888 153,947 134,783 82,306 245,798 90,342 CCS A (gpm) 6,900 5,650 5,000 1,430 4,400 2,740 CCS B (gpm) 2,740 2,740 2,740 2,740 2,740 2,740 Other (gpm) 7,076 6,828 6,828 7,068 11,436 7,076 Total Flow 16,716 15,218 14,568 11,238 18,576 12,556

ENCLOSURE 5 Summary Heat Load and Flow Tables for RAI 9.2.1 - ERCW - 3.

Tennessee Valley Authority - Watts Bar Nuclear Plant - Unit 2, Docket No. 50-391 E5 - 11 ERCW Train B Heat Loads and Flows with Offsite Power Available (sheet 1 of 3)

Unit 1 Operational Modes Op Mode ERCW Loads and Flows Startup Power Hot Shutdown Cold Shutdown Initial Refueling Safety Injection LOCA Recirc Hot Standby Unit 2 Operational Modes Startup CCS C (kBTU/hr) 19,934 19,833 44,966 37,034 28,684 19,994 27,794 19,833 Other (kBTU/hr) 29,444 29,444 29,444 23,814 23,814 59,136 165,121 29,444 Total Load 49,378 49,277 74,410 60,848 52,498 79,130 192,915 49,277 CCS C (gpm) 1,630 1,620 6,000 3,870 3,220 1,630 2,630 1,620 Other (gpm) 3,977 3,977 3,855 3,497 3,497 6,557 10,659 3,977 Total Flow 5,607 5,597 9,855 7,367 6,717 8,187 13,289 5,597 Power CCS C (kBTU/hr) 19,834 134 44,866 36,934 28,584 294 27,694 134 Other (kBTU/hr) 29,493 29,493 29,493 23,863 23,863 59,185 165,170 29,493 Total Load 49,327 29,627 74,359 60,797 52,447 59,479 192,864 29,627 CCS C (gpm) 1,620 48 6,000 3,860 4,040 24 2,620 28 Other (gpm) 3,987 3,987 3,865 3,507 3,507 6,567 10,669 3,987 Total Flow 5,607 4,035 9,865 7,367 7,547 6,591 13,289 4,015 Hot Shutdown CCS C (kBTU/hr) 44,966 44,866 N/A 44,966 44,966 45,027 N/A 44,866 Other (kBTU/hr) 28,555 28,555 22,925 22,925 58,246 28,555 Total Load 73,521 73,421 67,891 67,891 103,273 73,421 CCS C (gpm) 6,000 6,000 6,000 6,000 6,000 6,000 Other (gpm) 3,877 3,877 3,397 3,397 6,457 3,877 Total Flow 9,877 9,877 9,397 9,397 12,457 9,877

ENCLOSURE 5 Summary Heat Load and Flow Tables for RAI 9.2.1 - ERCW - 3.

Tennessee Valley Authority - Watts Bar Nuclear Plant - Unit 2, Docket No. 50-391 E5 - 12 ERCW Train B Heat Loads and Flows with Offsite Power Available (sheet 2 of 3)

Unit 1 Operational Modes Op Mode ERCW Loads and Flows Startup Power Hot Shutdown Cold Shutdown Initial Refueling Safety Injection LOCA Recirc Hot Standby Unit 2 Operational Modes Cold Shutdown CCS C (kBTU/hr) 37,034 36,934 44,966 37,034 37,034 37,094 27,794 36,934 Other (kBTU/hr) 23,805 23,805 23,805 18,175 18,175 53,497 159,483 23,805 Total Load 60,839 60,739 68,771 55,209 55,209 90,591 187,277 60,739 CCS C (gpm) 3,870 3,860 6,000 3,870 3,220 3,870 2,630 3,860 Other (gpm) 3,519 3,519 3,397 3,039 3,039 6,099 10,201 3,519 Total Flow 7,389 7,379 9,397 6,909 6,259 9,969 12,831 7,379 Initial Refueling CCS C (kBTU/hr) 28,684 28,584 44,966 37,034 28,684 28,744 27,794 28,584 Other (kBTU/hr) 23,805 23,805 23,805 18,175 18,175 53,497 159,483 23,805 Total Load 52,489 52,389 68,771 55,209 46,859 82,241 187,277 52,389 CCS C (gpm) 3,220 3,210 6,000 3,870 3,220 3,220 2,630 3,210 Other (gpm) 3,519 3,519 3,397 3,039 3,039 6,099 10,201 3,519 Total Flow 6,739 6,729 9,397 6,909 6,259 9,319 12,831 6,729 Safety Injection CCS C (kBTU/hr) 19,994 294 45,027 37,094 28,744 N/A N/A 294 Other (kBTU/hr) 30,191 30,191 30,191 24,561 24,561 30,191 Total Load 50,185 30,485 75,218 61,655 53,305 30,485 CCS C (gpm) 1,630 60 6,000 3,910 3,220 86 Other (gpm) 6,579 6,579 6,457 6,099 6,099 6,579 Total Flow 8,209 6,639 12,457 10,009 9,319 6,665

ENCLOSURE 5 Summary Heat Load and Flow Tables for RAI 9.2.1 - ERCW - 3.

Tennessee Valley Authority - Watts Bar Nuclear Plant - Unit 2, Docket No. 50-391 E5 - 13 ERCW Train B Heat Loads and Flows with Offsite Power Available (sheet 3 of 3)

Unit 1 Operational Modes Op Mode ERCW Loads and Flows Startup Power Hot Shutdown Cold Shutdown Initial Refueling Safety Injection LOCA Recirc Hot Standby Unit 2 Operational Modes LOCA Recirc CCS C (kBTU/hr) 27,794 27,694 N/A 27,794 27,794 N/A N/A 27,694 Other (kBTU/hr) 136,177 136,177 130,547 130,547 136,177 Total Load 163,971 163,871 158,341 158,341 163,871 CCS C (gpm) 2,630 2,620 2,630 2,630 2,620 Other (gpm) 10,681 10,681 10,201 10,201 10,681 Total Flow 13,311 13,301 12,831 12,831 13,301 Hot Standby CCS C (kBTU/hr) 19,834 134 44,866 36,934 28,584 294 27,694 134 Other (kBTU/hr) 29,493 29,493 29,493 23,863 23,863 59,185 165,170 29,493 Total Load 49,327 29,627 74,359 60,797 52,447 59,479 192,864 29,627 CCS C (gpm) 1,620 28 6,000 3,890 4,040 24 3,150 28 Other (gpm) 3,987 3,987 3,865 3,507 3,507 6,567 10,669 3,987 Total Flow 5,607 4,015 9,865 7,397 7,547 6,591 13,819 4,015

ENCLOSURE 5 Summary Heat Load and Flow Tables for RAI 9.2.1 - ERCW - 3.

Tennessee Valley Authority - Watts Bar Nuclear Plant - Unit 2, Docket No. 50-391 E5 - 14 ERCW Train B Heat Loads and Flows with LOOP and Loss of Train A (sheet 1 of 4)

Unit 1 Operational Modes Op Mode ERCW Loads and Flows Startup Power Hot Shutdown Cold Shutdown Initial Refueling Safety Injection LOCA Recirc Hot Standby Unit 2 Operational Modes Startup CCS A (kBTU/hr)

N/A N/A N/A N/A N/A N/A N/A N/A CCS C (kBTU/hr)

Other (kBTU/hr)

Total Load CCS A (gpm)

CCS C (gpm)

Other (gpm)

Total Flow Power CCS A (kBTU/hr)

N/A N/A N/A N/A N/A N/A N/A N/A CCS C (kBTU/hr)

Other (kBTU/hr)

Total Load CCS A (gpm)

CCS C (gpm)

Other (gpm)

Total Flow

ENCLOSURE 5 Summary Heat Load and Flow Tables for RAI 9.2.1 - ERCW - 3.

Tennessee Valley Authority - Watts Bar Nuclear Plant - Unit 2, Docket No. 50-391 E5 - 15 ERCW Train B Heat Loads and Flows with LOOP and Loss of Train A (sheet 2 of 4)

Unit 1 Operational Modes Op Mode ERCW Loads and Flows Startup Power Hot Shutdown Cold Shutdown Initial Refueling Safety Injection LOCA Recirc Hot Standby Unit 2 Operational Modes Hot Shutdown CCS A (kBTU/hr)

N/A N/A N/A 16,823 16,823 16,823 N/A 16,823 CCS C (kBTU/hr) 163,134 146,434 89,795 89,634 Other (kBTU/hr) 51,705 51,705 55,574 55,574 Total Load 231,662 214,962 162,192 162,031 CCS A (gpm) 1,340 1,340 1,340 1,340 CCS C (gpm) 10,700 10,700 9,500 9,750 Other (gpm) 6,828 6,828 7,068 7,088 Total Flow 18,868 18,868 17,908 18,178 Cold Shutdown CCS A (kBTU/hr)

N/A N/A 16,823 16,823 16,823 16,823 16,823 16,823 CCS C (kBTU/hr) 163,134 147,269 130,569 73,929 128,729 73,769 Other (kBTU/hr) 51,705 47,837 47,837 51,705 159,874 51,705 Total Load 231,662 211,928 195,228 142,458 305,427 142,297 CCS A (gpm) 1,340 1,340 1,340 1,340 1,340 1,340 CCS C (gpm) 10,700 10,000 10,600 6,030 8,800 6,020 Other (gpm) 6,828 6,580 6,580 6,820 11,188 6,840 Total Flow 18,868 17,920 18,520 14,190 21,328 14,200

ENCLOSURE 5 Summary Heat Load and Flow Tables for RAI 9.2.1 - ERCW - 3.

Tennessee Valley Authority - Watts Bar Nuclear Plant - Unit 2, Docket No. 50-391 E5 - 16 ERCW Train B Heat Loads and Flows with LOOP and Loss of Train A (sheet 3 of 4)

Unit 1 Operational Modes Op Mode ERCW Loads and Flows Startup Power Hot Shutdown Cold Shutdown Initial Refueling Safety Injection LOCA Recirc Hot Standby Unit 2 Operational Modes Initial Refueling CCS A (kBTU/hr)

N/A N/A 16,823 16,823 16,823 16,823 16,823 16,823 CCS C (kBTU/hr) 146,434 130,569 113,869 57,229 112,029 57,069 Other (kBTU/hr) 51,705 47,837 47,837 51,705 159,874 51,705 Total Load 214,962 195,228 178,528 125,758 288,727 125,597 CCS A (gpm) 1,340 1,340 1,340 1,340 1,340 1,340 CCS C (gpm) 10,700 10,600 10,300 6,300.0 8,800 6,850 Other (gpm) 6,828 6,580 6,580 6,820 11,188 6,840 Total Flow 18,868 18,520 18,220 14,460 21,328 15,030 Safety Injection CCS A (kBTU/hr)

N/A N/A 16,823 16,823 16,823 N/A N/A 16,823 CCS C (kBTU/hr) 89,795 73,929 57,229 429 Other (kBTU/hr) 55,574 51,705 51,705 55,574 Total Load 162,192 142,458 125,758 72,827 CCS A (gpm) 1,340 1,340 1,340 1,340 CCS C (gpm) 9,500 6,030 6,030 120 Other (gpm) 7,068 6,820 6,820 7,080 Total Flow 17,908 14,190 14,460 8,540

ENCLOSURE 5 Summary Heat Load and Flow Tables for RAI 9.2.1 - ERCW - 3.

Tennessee Valley Authority - Watts Bar Nuclear Plant - Unit 2, Docket No. 50-391 E5 - 17 ERCW Train B Heat Loads and Flows with LOOP and Loss of Train A (sheet 4 of 4)

Unit 1 Operational Modes Op Mode ERCW Loads and Flows Startup Power Hot Shutdown Cold Shutdown Initial Refueling Safety Injection LOCA Recirc Hot Standby Unit 2 Operational Modes LOCA Recirc CCS A (kBTU/hr)

N/A N/A N/A 16,823 16,823 N/A N/A 16,823 CCS C (kBTU/hr) 120,379 112,029 55,229 Other (kBTU/hr) 159,874 159,874 163,743 Total Load 297,077 288,727 235,795 CCS A (gpm) 1,340 1,340 1,340 CCS C (gpm) 7,125 7,125 4,500 Other (gpm) 11,188 11,188 11,448 Total Flow 19,653 19,653 17,288 Hot Standby CCS A (kBTU/hr)

N/A N/A 16,823 16,823 16,823 16,823 16,823 16,823 CCS C (kBTU/hr) 89,734 73,869 57,169 529 55,329 369 Other (kBTU/hr) 55,574 51,705 51,705 55,574 163,743 55,574 Total Load 162,131 142,397 125,697 72,927 235,895 72,766 CCS A (gpm) 1,340 1,340 1,340 1,340 1,340 1,340 CCS C (gpm) 9,750 6,020 6,850 110 4,510 75 Other (gpm) 7,076 6,828 6,828 7,068 11,436 7,088 Total Flow 18,166 14,188 15,018 8,518 17,286 8,503

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