GO2-23-035, Supplement to License Amendment Request to Adopt TSTF-580, Provide Exception from Entering Mode 4 with No Operable RHR Shutdown Cooling

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Supplement to License Amendment Request to Adopt TSTF-580, Provide Exception from Entering Mode 4 with No Operable RHR Shutdown Cooling
ML23068A300
Person / Time
Site: Columbia Energy Northwest icon.png
Issue date: 03/09/2023
From: David Brown
Energy Northwest
To:
Document Control Desk
References
GO2-23-035
Download: ML23068A300 (1)
v • d • e


Text

David P. Brown Columbia Generating Station P.O. Box 968, PE23 Richland, WA 99352-0968 509.377.8385 dpbrown@energy-northwest.com 10 CFR 50.90 GO2-23-035 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001

Subject:

COLUMBIA GENERATING STATION, DOCKET NO. 50-397 SUPPLEMENT TO LICENSE AMENDMENT REQUEST TO ADOPT TSTF-580, PROVIDE EXCEPTION FROM ENTERING MODE 4 WITH NO OPERABLE RHR SHUTDOWN COOLING

Reference:

Letter from D. Brown (Energy Northwest) to U.S. Nuclear Regulatory Commission, Application to Revise Technical Specifications to Adopt TSTF-580, Provide Exception from Entering Mode 4 With No Operable RHR Shutdown Cooling Using the Consolidated Line Item Improvement Process, dated May 25, 2022 (ADAMS Accession No. ML2215A465)

Dear Sir or Madam:

In the referenced letter, Energy Northwest requested an amendment to the Columbia Generating Station (Columbia) Technical Specifications (TS). The proposed amendment provides a TS exception to entering Mode 4 if both required Residual Heat Removal shutdown cooling subsystems are inoperable.

The information contained in the attachments to this letter supplements the referenced letter to provide corrected TS page mark-ups and corrected clean TS pages. The information provided in this supplement does not affect the Technical Analysis or No Significant Hazards Consideration conclusions contained in the license amendment request, and does not affect the bases for concluding that neither an environmental impact statement nor an environmental assessment needs to be prepared in connection with the proposed amendment.

  

 





 

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March 9, 2023 ENERGY NORTHWEST

GO2-23-035 Page 2 of 2 In accordance with 10 CFR 50.91, Energy Northwest is notifying the State of Washington of this amendment supplement by transmitting a copy of this letter and attachments to the designated State Official.

This letter and its attachments contain no new commitments.

If there are any questions or if additional information is needed, please contact Mr. R.M. Garcia, Licensing Supervisor, at 509-377-8463.

I declare under penalty of perjury that the foregoing is true and correct.

Executed this ______ day of ___________ 2023.

Respectfully, David P. Brown Site Vice President

Attachment:

1. Proposed Columbia Technical Specification Changes (Mark-Up)
2. Revised Columbia Technical Specification Pages cc:

NRC RIV Regional Administrator NRC NRR Project Manager NRC Senior Resident Inspector/988C CD Sonoda - BPA/1399 EFSEC@efsec.wa.gov - EFSEC E Fordham - WDOH R Brice - WDOH L Albin - WDOH

  

 





 

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9th March

GO2-23-035 Page 1 of 4 Proposed Columbia Technical Specification Changes (Mark-Up)

  

 





 

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RHR Shutdown Cooling System - Hot Shutdown 3.4.9 Columbia Generating Station 3.4.9-1 Amendment No. 169,187 225 263 3.4 REACTOR COOLANT SYSTEM (RCS) 3.4.9 Residual Heat Removal (RHR) Shutdown Cooling System - Hot Shutdown LCO 3.4.9 Two RHR shutdown cooling subsystems shall be OPERABLE, and, with no recirculation pump in operation, at least one RHR shutdown cooling subsystem shall be in operation.

NOTES-------------------------------------------

1.

Both RHR shutdown cooling subsystems and recirculation pumps may be removed from operation for up to 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> per 8 hour9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> period.

2.

One RHR shutdown cooling subsystem may be inoperable for up to 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> for performance of Surveillances.

APPLICABILITY:

MODE 3 with reactor steam dome pressure less than 48 psig.

ACTIONS

NOTE-----------------------------------------------------------

Separate Condition entry is allowed for each RHR shutdown cooling subsystem.

CONDITION REQUIRED ACTION COMPLETION TIME A. One or two RHR shutdown cooling subsystems inoperable.

A.1 Verify an alternate method of decay heat removal is available for each inoperable RHR shutdown cooling subsystem.

1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> AND Once per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> thereafter B. Required Action and associated Completion Time of Condition A not met.

B.1 Initiate action to restore RHR shutdown cooling subsystem(s) to OPERABLE status.

Immediately GO2-23-035 Page 2 of 4

  

 





 

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RHR Shutdown Cooling System - Hot Shutdown 3.4.9 Columbia Generating Station 3.4.9-2 Amendment No. 164,169 225 238 246 263 ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME

(&. No RHR shutdown cooling subsystem in operation.

AND No recirculation pump in operation.

(&.1 Initiate action to restore one RHR shutdown cooling subsystem or one recirculation pump to operation.

AND

(&.2 Verify reactor coolant circulation by an alternate method.

AND

(&.3 Monitor reactor coolant temperature and pressure.

Immediately 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> from discovery of no reactor coolant circulation AND Once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> thereafter Once per hour

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Immediately GO2-23-035 Page 3 of 4

  

 





 

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RHR Shutdown Cooling System - Hot Shutdown 3.4.9 Columbia Generating Station 3.4.9-3 Amendment No. 246 SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.4.9.

NOTE------------------------------

Not required to be PHW until 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> after reactor steam dome pressure is OHVVWKDQ 48 psig.

Verify RQHRHR shutdown cooling subsystemRU

UHFLUFXODWLRQSXPSLVRSHUDWLQJ

In accordance with the Surveillance Frequency Control Program SR 3.4.9.2

NOTE------------------------------

Not required to be performed until 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> after reactor steam dome pressure is < 48 psig.

Verify RHR shutdown cooling subsystem locations susceptible to gas accumulation are sufficiently filled with water.

In accordance with the Surveillance Frequency Control Program GO2-23-035 Page 4 of 4

  

 





 

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GO2-23-035 Page 1 of 4 Revised Columbia Technical Specification Pages

  

 





 

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RHR Shutdown Cooling System - Hot Shutdown 3.4.9 Columbia Generating Station 3.4.9-1 Amendment No. 169,187 225 263 3.4 REACTOR COOLANT SYSTEM (RCS) 3.4.9 Residual Heat Removal (RHR) Shutdown Cooling System - Hot Shutdown LCO 3.4.9 Two RHR shutdown cooling subsystems shall be OPERABLE, and, with no recirculation pump in operation, at least one RHR shutdown cooling subsystem shall be in operation.

NOTES-------------------------------------------

1.

Both RHR shutdown cooling subsystems and recirculation pumps may be removed from operation for up to 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> per 8 hour9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> period.

2.

One RHR shutdown cooling subsystem may be inoperable for up to 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> for performance of Surveillances.

APPLICABILITY:

MODE 3 with reactor steam dome pressure less than 48 psig.

ACTIONS

NOTE-----------------------------------------------------------

Separate Condition entry is allowed for each RHR shutdown cooling subsystem.

CONDITION REQUIRED ACTION COMPLETION TIME A. One 5+5VKXWGRZQ cooling subsystem inoperable.

A.1 Verify an alternate method of decay heat removal is available.

1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> AND Once per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> thereafter B. Required Action and associated Completion Time of Condition A not met.

B.1 Initiate action to restore RHR shutdown cooling subsystem to OPERABLE status.

Immediately GO2-23-035 Page 2 of 4

  

 





 

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RHR Shutdown Cooling System - Hot Shutdown 3.4.9 Columbia Generating Station 3.4.9-2 Amendment No. 164,169 225 238 246 263 ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME

(. No RHR shutdown cooling subsystem in operation.

AND No recirculation pump in operation.

(.1 Initiate action to restore one RHR shutdown cooling subsystem or one recirculation pump to operation.

AND

(.2 Verify reactor coolant circulation by an alternate method.

AND

(.3 Monitor reactor coolant temperature and pressure.

Immediately 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> from discovery of no reactor coolant circulation AND Once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> thereafter Once per hour

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Immediately GO2-23-035 Page 3 of 4

  

 





 

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RHR Shutdown Cooling System - Hot Shutdown 3.4.9 Columbia Generating Station 3.4.9-3 Amendment No. 246 SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.4.9.

NOTE------------------------------

Not required to be PHW until 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> after reactor steam dome pressure is OHVVWKDQ 48 psig.

Verify RQHRHR shutdown cooling subsystemRU

UHFLUFXODWLRQSXPSLVRSHUDWLQJ

In accordance with the Surveillance Frequency Control Program SR 3.4.9.2

NOTE------------------------------

Not required to be performed until 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> after reactor steam dome pressure is < 48 psig.

Verify RHR shutdown cooling subsystem locations susceptible to gas accumulation are sufficiently filled with water.

In accordance with the Surveillance Frequency Control Program GO2-23-035 Page 4 of 4

  

 





 

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