ML16328A283

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Supplemental Presentation Slides for 10/25/2016 Public Meeting Via E-mail from K.Greene to R.Guzman Calvert Cliffs GSI-191 Resolution Update
ML16328A283
Person / Time
Site: Calvert Cliffs  Constellation icon.png
Issue date: 11/18/2016
From: Greene K
Exelon Generation Co
To: Richard Guzman
Plant Licensing Branch 1
Guzman R
References
MF8521, MF8522
Download: ML16328A283 (18)
v • d • e


Text

From:

Greene, Ken:(GenCo-Nuc)

To:

Guzman, Richard

Subject:

[External_Sender] FW: T/H Analysis Presentation Date:

Friday, November 18, 2016 10:17:37 AM Attachments:

RI GSI-191 TH Analysis Results.pdf

Rich, Good morning. Attached is a presentation covering information Steve Smith, NRC, had requested to see.

Have a good Thanksgiving.

From: Sellers, Craig:(Contractor - GenCo-Nuc)

Sent: Friday, November 18, 2016 9:29 AM To: Greene, Ken:(GenCo-Nuc)

Cc: Drake, Andre S:(GenCo-Nuc); Salehi, Matthew:(GenCo-Nuc); Haydin, John S:(GenCo-Nuc); Lauver, Doug:(GenCo-Nuc)

Subject:

T/H Analysis Presentation

Ken,

Please submit the attached presentation to the Calvert Cliffs NRC Project Manager. Inform him that Steve Smith (NRC Staff) wanted to see this data.

Thanks,

Craig Craig D. Sellers Project Manager GSI-191 Resolution/GL 2004-02 Closure Calvert Cliffs Nuclear Power Plant (o) 410.495.4272 - Calvert Cliffs (c) 410.610.1164

This Email message and any attachment may contain information that is proprietary, legally privileged, confidential and/or subject to copyright belonging to Exelon Corporation or its affiliates ("Exelon"). This Email is intended solely for the use of the person(s) to which it is addressed. If you are not an intended recipient, or the employee or agent responsible for delivery of this Email to the intended recipient(s), you are hereby notified that any dissemination, distribution or copying of this Email is strictly prohibited. If you have received this message in error, please immediately notify the sender and permanently delete this Email and any copies. Exelon policies expressly prohibit employees from making defamatory or offensive statements and infringing any copyright or any other legal right by Email communication. Exelon will not accept any liability in respect of such communications.-

EXCIP

Calvert Cliffs GSI-191 Program Thermal Hydraulic Analysis of Containment Response Calculation CA10199 November 18, 2016

Thermal Hydraulic Analysis of Containment

  • Investigate Sump Temperature and Containment Pressure

- Large Break LOCA Events

- LOCA Scenarios Presented

  • DEGB Cold Leg,

- 2 Trains of ESF (Maximum SI) - CCX

- Single Train of ESF (Minimum SI) - CCI

  • DEGB Hot Leg,

- 2 Trains of ESF (Maximum SI) - HHX

- Single Train of ESF (Minimum SI) - HHI

- 2 ft2 Break, Single Train of ESF - H2I Calvert Cliffs GSI-191 Containment Response T/H Analyses 1

Thermal Hydraulic Analysis of Containment (Cont.)

  • Containment Response Scenarios Evaluated

- Scenario A: 2 Containment Air Coolers (CACs) Operating

  • Determine if containment pressure is reduced to 2.8 psig prior to sump fluid temperature reducing to 140°F.

- Scenario B: 4 CACs Operating

  • Determine how quickly the containment pressure could drop to sub-atmospheric conditions in the strainer.

- Scenario C: 4 CACs Operating

  • Determine, for the case where no single failures have occurred (4 CACs and 2 Containment Spray Pumps operating), if the containment response profile remains below the EQ profile.
  • When the first CS Pump is secured (at 2.8 psig), the other CS Pump is lost for 30 minutes and two (2) CACs are lost indefinitely.

- Scenario D: Repeat Scenario C with the following change:

  • When the first CS Pump is secured (at 2.8 psig), the other CS Pump is lost for 30 minutes.

- Scenario E: Repeat Scenario C with the following change:

  • When the first CS Pump is secured (at 2.8 psig) and one HPSI pump is also secured, the other CS Pump and the other HPSI pump are lost for 30 minutes. Two CACs are also assumed to be lost indefinitely.

Calvert Cliffs GSI-191 Containment Response T/H Analyses 2

Typical Containment Pressure Profile Calvert Cliffs GSI-191 Containment Response T/H Analyses 3

0 5

10 15 20 25 30 35 40 45 50 1.E-01 1.E+00 1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 1.E+07 Containment Pressure (psig)

Time (s)

RAS CS Pump Trip Pressure Reduction due to reduction in M&E release and heat removal by heat sinks Pressure Increase due to increase in M&E release from RCS reflood spillage Pressure Reduction due to heat removal by CS and CACs

Typical Containment Air Temperature Profile Calvert Cliffs GSI-191 Containment Response T/H Analyses 4

100 120 140 160 180 200 220 240 260 280 300 1.E-01 1.E+00 1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 1.E+07 Temperature (F)

Time (s)

RAS CS Pump Trip Temp Reduction due to heat removal by CS and CACs Temp Reduction due to reduction in M&E release and heat removal by heat sinks

Typical Sump Temperature Profile - Hot Leg Break Calvert Cliffs GSI-191 Containment Response T/H Analyses 5

100 120 140 160 180 200 220 240 260 280 300 1.E-01 1.E+00 1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 1.E+07 Temperature (F)

Time (s)

CS Pump Trip RAS

Typical Sump Temperature Profile - Cold Leg Break Calvert Cliffs GSI-191 Containment Response T/H Analyses 6

100 120 140 160 180 200 220 240 260 280 300 1.E-01 1.E+00 1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 1.E+07 Temperature (F)

Time (s)

CS Pump Trip RAS Temp Reduction due to SI spillage from break

Scenario A - Containment Pressure Calvert Cliffs GSI-191 Containment Response T/H Analyses 7

0 5

10 15 20 25 30 35 40 45 50 1.E-01 1.E+00 1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 1.E+07 Containment Pressure (psig)

Time (s)

CCX CCI HHX HHI H2I

Scenario A - Containment Air Temperature Calvert Cliffs GSI-191 Containment Response T/H Analyses 8

100 120 140 160 180 200 220 240 260 280 300 1.E-01 1.E+00 1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 1.E+07 Temperature (F)

Time (s)

CCX CCI HHX HHI H2I

Scenario A - Sump Temperature Calvert Cliffs GSI-191 Containment Response T/H Analyses 9

100 120 140 160 180 200 220 240 260 280 300 1.E-01 1.E+00 1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 1.E+07 Temperature (F)

Time (s)

CCX CCI HHX HHI H2I

Scenario B - Containment Pressure Calvert Cliffs GSI-191 Containment Response T/H Analyses 10 0

5 10 15 20 25 30 35 40 45 50 1.E-01 1.E+00 1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 1.E+07 Pressure (psig)

Time (s)

CCX CCI HHX HHI H2I

Scenario B - Containment Air Temperature Calvert Cliffs GSI-191 Containment Response T/H Analyses 11 100 120 140 160 180 200 220 240 260 280 300 1.E-01 1.E+00 1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 1.E+07 Temperature (F)

Time (s)

CCX CCI HHX HHI H2I

Scenario B - Sump Temperature Calvert Cliffs GSI-191 Containment Response T/H Analyses 12 100 120 140 160 180 200 220 240 260 280 300 1.E-01 1.E+00 1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 1.E+07 Temperature (F)

Time (s)

CCX CCI HHX HHI H2I

Thermal Hydraulic Analysis Results

- Hot Leg Break

  • Time to 140°F = 108.3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br />
  • Time to 2.8 psig = 47.2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />
  • Time to secure pump = 61.1 hours1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />
  • Pressure @ 140°F = 1.98 psig

- Cold Leg Break

  • Time to 140°F = 77.8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />
  • Time to 2.8 psig = 63.9 hours1.041667e-4 days <br />0.0025 hours <br />1.488095e-5 weeks <br />3.4245e-6 months <br />
  • Time to secure pump = 13.9 hours1.041667e-4 days <br />0.0025 hours <br />1.488095e-5 weeks <br />3.4245e-6 months <br />
  • Pressure @ 140°F = 2.58 psig Calvert Cliffs GSI-191 Containment Response T/H Analyses 13

- Hot Leg Break

  • Time to 140°F = 86.1 hours1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />
  • Time to 2.8 psig = 23.6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />
  • Time to secure pump = 62.5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br />
  • Pressure @ 140°F = 1.95 psig

- Cold Leg Break

  • Time to 140°F = 50.0 hours0 days <br />0 hours <br />0 weeks <br />0 months <br />
  • Time to 2.8 psig = 38.9 hours1.041667e-4 days <br />0.0025 hours <br />1.488095e-5 weeks <br />3.4245e-6 months <br />
  • Time to secure pump = 11.1 hours1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />
  • Pressure @ 140°F = 2.63 psig

Scenario C - Containment Pressure & Temperature Calvert Cliffs GSI-191 Containment Response T/H Analyses 14 0

10 20 30 40 50 60 1.E-01 1.E+01 1.E+03 1.E+05 1.E+07 Pressure (psig)

Time (s)

CCX HHX ES-014 (EQ) 100 120 140 160 180 200 220 240 260 280 300 1.E-01 1.E+01 1.E+03 1.E+05 1.E+07 Temperature (F)

Time (s)

CCX HHX ES-014 (EQ)

Scenario D - Containment Pressure & Temperature Calvert Cliffs GSI-191 Containment Response T/H Analyses 15 0

5 10 15 20 25 30 35 40 45 50 1.E-01 1.E+01 1.E+03 1.E+05 1.E+07 Pressure (psig)

Time (s)

CCX HHX ES-014 100 120 140 160 180 200 220 240 260 280 300 1.E-01 1.E+01 1.E+03 1.E+05 1.E+07 Temperature (F)

Time (s)

CCX HHX ES-014

Scenario E - Containment Pressure & Temperature Calvert Cliffs GSI-191 Containment Response T/H Analyses 16 0

5 10 15 20 25 30 35 40 45 50 1.E-01 1.E+01 1.E+03 1.E+05 1.E+07 Pressure (psig)

Time (s)

CCX HHX ES-014 (EQ) 100 120 140 160 180 200 220 240 260 280 300 1.E-01 1.E+01 1.E+03 1.E+05 1.E+07 Temperature (F)

Time (s)

CCX HHX ES-014 (EQ)

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