PLA-7793, Response to Request for Additional Information Regarding Proposed License Amendment Requesting a Temporary Change to the Technical Specifications to Allow Replacement of Emergency Service Water System Piping

Response to Request for Additional Information Regarding Proposed License Amendment Requesting a Temporary Change to the Technical Specifications to Allow Replacement of Emergency Service Water System Piping

ML19154A125
Person / Time
Site:	Susquehanna
Issue date:	06/03/2019
From:	Cimorelli K Susquehanna, Talen Energy
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
EPID L-2019-LLA-0004, PLA-7793
Download: ML19154A125 (31)

Text

TALEN~

Kevin Cimorelli Susquehanna Nuclear, LLC Site Vice President 769 Salem Boulevard Berwick, PA 18603 Tel. 570.542.3795 Fax 570.542.1504 Kevin.Cimorelli@TalenEnergy.com ENERGY Attn: Document Control Desk 10 CFR 50.90 U. S. Nuclear Regulatory Commission Washington, DC 20555-0001 SUSQUEHANNA STEAM ELECTRIC STATION RESPONSE TO REQUEST FOR ADDITIONAL INFORMATION REGARDING PROPOSED JUN 0 3 2019 LICENSE AMENDMENT REQUESTING A TEMPORARY CHANGE TO THE TECHNICAL SPECIFICATIONS TO ALLOW REPLACEMENT OF EMERGENCY SERVICE WATER SYSTEM PIPING Docket No. 50-387 PLA-7793 and 50-388

References:

1) Susquehanna letter to NRC, "Proposed Amendment to Licenses NPF-14 and NPF-22: Temporary Change to the Technical Specifications to Allow Replacement ofEmergency Service Water System Piping (PLA-7751)," dated January 9, 2019 (ADAMS Accession No. ML19009A431)

2) NRC email to Susquehanna, "Request for Additional Information Re: License Amendment Request to Replace Emergency Service Water Piping (EPID: L-2019-LLA-0004)," dated May 7, 2019 (ADAMS Accession No. ML19128A023)

Pursuant to 10 CFR 50.90, Susquehanna Nuclear, LLC (Susquehanna), submitted, in Reference 1, a request for an amendment to the Technical Specifications (TS) for Susquehanna Steam Electric Station (SSES), Units 1 and 2, Facility Operating License numbers NPF -14 and NPF-22. The proposed amendment would allow temporary changes toTS 3.7.1, "Residual Heat Removal Service Water (RHRSW) System and the Ultimate Heat Sink (UHS)" and TS 3.7.2, "Emergency Service Water (ESW) System," to allow for replacement ofESW System piping.

The NRC provided a Request for Additional Information (RAI) in Reference 2. Enclosure 1 to this letter provides Susquehanna's response to the NRC's RAI. Based on Susquehanna's response to the RAI in Enclosure 1, the TS markups provided in Reference 1 have been revised.

The revised TS markup pages are provided in Enclosure 2 and the revised clean TS pages are provided in Enclosure 3. The TS pages provided in Enclosures 2 and 3 of this letter supersede the TS pages provided in Enclosures 2 and 3 to Reference 1 in their entirety.

Document Control Desk PLA-7793 Susquehanna has reviewed the information supporting a finding of No Significant Hazards Consideration and the Environmental Consideration provided to the NRC in Reference 1 and determined the information provided herein does not impact the original conclusions in Reference 1.

There are no new or revised regulatory commitments contained in this submittal.

Should you have any questions regarding this submittal, please contact Ms. Melisa Krick, Manager- Nuclear Regulatory Affairs, at (570) 542-1818.

I declare under penalty of petjury that the foregoing is true and cmTect.

Executed on: t/~./2o r]

Enclosure:

1. Response to Request for Additional Information

2. Revised Markup Technical Specification Pages

3. Revised Clean Technical Specification Pages Copy: NRC Region I Ms. L. H. Micewski, NRC Sr. Resident Inspector Ms. T. E. Hood, NRC Project Manager Ms. J. C. Tobin, NRC Project Manager Mr. M. Shields, PA DEPIBRP

Enclosure 1 to PLA-7793 Response to Request for Additional Information

Enclosure 1 to PLA-7793 Page 1 of 2 Response to Request for Additional Information On January 9, 2019, Susquehanna Nuclear, LLC (Susquehanna), submitted a license amendment request (LAR) for the Susquehanna Steam Electric Station (SSES). Specifically, Susquehanna requested a temporary extension to select Completion Times in Technical Specification (TS) 3.7.1, Residual Heat Removal Service Water (RHRSW) System and the Ultimate Heat Sink (UHS) and TS 3.7.2, Emergency Service Water (ESW) System, to allow for replacement of ESW System piping. By email dated May 7, 2019, the NRC requested the following additional information. The response to this request for additional information (RAI) is provided below.

NRC RAI 10 CFR 50.36(c)(2) requires that, when an Limiting Conditions for Operation (LCO) of a nuclear reactor plant is not met, the licensee shall shut down the reactor or follow any remedial action permitted by the technical specification until the condition can be met. Susquehanna Technical Specifications (TSs) list remedial actions according to described Conditions in an ACTIONS table for each TS. Each Condition has Required Actions that must be completed within a given Completion Time (CT).

The licensee proposed a CT of 14 days for TS 3.7.1 Condition B and TS 3.7.2 Conditions B and C during the replacement of ESW piping for the opposite unit. The proposed CTs are modified by footnotes which identifies that the temporary extension is only applicable during ESW piping replacement and will expire in 2026 for Unit 2 and 2027 for Unit 1.

In Enclosure 1 of the LAR, the licensee provided an evaluation of the proposed changes.

Section 3.3 of this enclosure contains a list of compensatory measures the licensee will implement during the evolution to replace the ESW piping. In Enclosure 5 of the LAR, the licensee made a regulatory commitment to implement the compensatory measures identified in Section 3.3 of Enclosure 1. It appears that part of the justification for the proposed temporary CTs relies on the compensatory measures in Section 3.3.

Provide justification for the proposed CT language and footnote language that does not mention the compensatory measures. Alternatively, consider rewording the proposed CT language and footnote language to indicate that the 14 day CT is contingent on implementation of the compensatory measures in Section 3.3 of Enclosure 1 to the LAR.

Susquehanna Response Susquehanna has determined it is necessary to revise the wording of the footnotes modifying Condition B to TS 3.7.1 and Conditions B and C to TS 3.7.2. Specifically, the wording for all

Enclosure 1 to PLA-7793 Page 2 of 2 such footnotes has been revised to state, This Completion Time is only applicable during the Unit [1/2, as appropriate] A and B ESW piping replacement while the compensatory measures identified in Section 3.3 of Enclosure 1 to letter PLA-7751 are in place. Upon completion of pipe replacement activities, this temporary extension is no longer applicable and will expire on June 25, [2026/2027, as appropriate].

The revised TS markup pages are provided in Enclosure 2 and the revised clean TS pages are provided in Enclosure 3. The TS pages provided in Enclosures 2 and 3 of this letter supersede the TS pages provided in Enclosures 2 and 3 to the Susquehanna letter dated January 9, 2019 (ADAMS Accession No. ML19009A431), in their entirety.

Enclosure 2 of PLA-7793 Revised Markup Technical Specification Pages Revised Technical Specifications Pages Unit 1 TS Pages 3.7-2, 3.7-4, and 3.7-5 Unit 2 TS Pages 3.7-1, 3.7-2, 3.7-3, 3.7-3a, 3.7-3b, 3.7-3c, 3.7-3d, 3.7-3e, and 3.7-4

RHRSW System and UHS 3.7.1 ACTIONS (continued)

CONDITION REQUIRED ACTION COMPLETION TIME B. One Unit 1 RHRSW B.1 Restore the Unit 1 RHRSW 14 days during the subsystem inoperable. subsystem to OPERABLE replacement of the status. Unit 2 ESW piping(1)

OR 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> from discovery of the associated Unit 2 RHRSW subsystem inoperable AND 7 days C. Both Unit 1 RHRSW C.1 Restore one Unit 1 RHRSW 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> from discovery subsystems inoperable. subsystem to OPERABLE of one Unit 2 RHRSW status. subsystem not capable of supporting associated Unit 1 RHRSW subsystem AND 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> D. Required Action and D.1 Be in MODE 3. 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> associated Completion Time not met. AND OR D.2 Be in MODE 4. 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br /> UHS inoperable.

(1)

This Completion Time is only applicable during the Unit 2 A and B ESW piping replacement while the compensatory measures identified in Section 3.3 of Enclosure 1 to letter PLA-7751 are in place. Upon completion of pipe replacement activities, this temporary extension is no longer applicable and will expire on June 25, 2027.

SUSQUEHANNA - UNIT 1 3.7-2 Amendment 178, 182, 206, XXX

ESW System 3.7.2 3.7 PLANT SYSTEMS 3.7.2 Emergency Service Water (ESW) System LCO 3.7.2 Two ESW subsystems shall be OPERABLE.

APPLICABILITY: MODES 1, 2, and 3.

ACTIONS

---

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

Enter applicable Conditions and Required Actions of LCO 3.8.1, AC Sources, for DGs made inoperable by ESW.

CONDITION REQUIRED ACTION COMPLETION TIME A. One ESW pump in each A.1 Restore both ESW pumps to 7 days subsystem inoperable. OPERABLE status.

B. One or two ESW B.1 Restore ESW flow to the 14 days during the subsystems not capable required DGs to ensure that replacement of the of supplying ESW flow to each ESW subsystem is Unit 2 ESW piping(1) at least three required supplying at least three DGs. DGs. OR 7 days C. One ESW subsystem C.1 Restore the ESW 14 days during the inoperable for reasons subsystem to OPERABLE replacement of the other than Condition B. status. Unit 2 ESW piping(1)

OR 7 days (1)

This Completion Time is only applicable during the Unit 2 A and B ESW piping replacement while the compensatory measures identified in Section 3.3 of Enclosure 1 to letter PLA-7751 are in place. Upon completion of pipe replacement activities, this temporary extension is no longer applicable and will expire on June 25, 2027.

SUSQUEHANNA - UNIT 1 3.7-4 Amendment 178, XXX

ESW System 3.7.2 ACTIONS (continued)

CONDITION REQUIRED ACTION COMPLETION TIME D. Required Action and D.1 Be in MODE 3. 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> associated Completion Time of Condition A, B or AND C not met.

D.2 Be in MODE 4. 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br /> OR Both ESW subsystems inoperable for reasons other than Conditions A and B.

SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.7.2.1 ----------------------------------NOTE----------------------------------

Isolation of flow to individual components does not render ESW System inoperable.

Verify each ESW subsystem manual, power operated, In accordance with and automatic valve in the flow paths servicing safety the Surveillance related systems or components, that is not locked, Frequency Control sealed, or otherwise secured in position, is in the correct Program position.

SR 3.7.2.2 Verify each ESW subsystem actuates on an actual or In accordance with simulated initiation signal. the Surveillance Frequency Control Program SUSQUEHANNA - UNIT 1 3.7-5 Amendment 178, 266, XXX

RHRSW System and UHS 3.7.1 3.7 PLANT SYSTEMS 3.7.1 Residual Heat Removal Service Water (RHRSW) System and the Ultimate Heat Sink (UHS)

LCO 3.7.1 Two RHRSW subsystems and the UHS shall be OPERABLE.

APPLICABILITY: MODES 1, 2, and 3.

ACTIONS

---

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

Enter applicable Conditions and Required Actions of LCO 3.4.8, Residual Heat Removal (RHR)

Shutdown Cooling System-Hot Shutdown, for RHR shutdown cooling made inoperable by RHRSW System.

CONDITION REQUIRED ACTION COMPLETION TIME A. --------------NOTE------------ A.1 Declare the associated Immediately Separate Condition entry RHRSW subsystems is allowed for each valve. inoperable.

AND One valve in Table 3.7.1-1 inoperable. A.2 Establish an open flow path 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> to the UHS.

OR AND One valve in Table 3.7.1-2 inoperable. A.3 Restore the inoperable 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> from the valve(s) to OPERABLE discovery of an OR status. inoperable RHRSW subsystem in the One valve in Table opposite loop from the 3.7.1-3 inoperable. inoperable valve(s)

AND 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> (continued)

SUSQUEHANNA - UNIT 2 3.7-1 Amendment 151, 180, 224, 238, 248, XXX

RHRSW System and UHS 3.7.1 ACTIONS (continued)

CONDITION REQUIRED ACTION COMPLETION TIME OR OR Any combination of 7 days during the valves in Table 3.7.1-1, replacement of 480 V Table 3.7.1-2, or Table ESS Load Center 3.7.1-3 in the same return Transformers 1X210 loop inoperable. and 1X220 in Unit 1(1)

B. One Unit 2 RHRSW B.1 Restore the Unit 2 RHRSW 7 days during the subsystem inoperable. subsystem to OPERABLE replacement of 480 V status. ESS Load Center Transformers 1X210 and 1X220 in Unit 1(1)

OR 14 days during the replacement of the Unit 1 ESW piping(2)

OR 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> from discovery of the associated Unit 1 RHRSW subsystem inoperable AND 7 days (1)

Upon completion of the replacement of the 480 V ESS Load Center Transformers 1X210 and 1X220 in Unit 1, this temporary extension is no longer applicable and will expire on June 15, 2020.

(2)

This Completion Time is only applicable during the Unit 1 A and B ESW piping replacement while the compensatory measures identified in Section 3.3 of Enclosure 1 to letter PLA-7751 are in place. Upon completion of pipe replacement activities, this temporary extension is no longer applicable and will expire on June 25, 2026.

SUSQUEHANNA - UNIT 2 3.7-2 Amendment 151, 156, 180, 238, 248, XXX

RHRSW System and UHS 3.7.1 ACTIONS (continued)

CONDITION REQUIRED ACTION COMPLETION TIME C. Both Unit 2 RHRSW C.1 Restore one Unit 2 RHRSW 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> from discovery subsystems inoperable. subsystem to OPERABLE of one Unit 1 RHRSW status. subsystem not capable of supporting associated Unit 2 RHRSW subsystem AND 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> D. Required Action and D.1 Be in MODE 3. 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> associated Completion Time not met. AND OR D.2 Be in MODE 4. 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br /> UHS inoperable.

SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.7.1.1 Verify the water level is greater than or equal to 678 feet In accordance with 1 inch above Mean Sea Level. the Surveillance Frequency Control Program SUSQUEHANNA - UNIT 2 3.7-3 Amendment 151, 156, 180, 224, 247, XXX

RHRSW System and UHS 3.7.1 SURVEILLANCE REQUIREMENTS (continued)

SURVEILLANCE FREQUENCY SR 3.7.1.2 Verify the average water temperature of the UHS is: In accordance with the Surveillance

a. --------------------------------NOTE------------------------------- Frequency Control Only applicable with both units in MODE 1 or 2, or Program with either unit in MODE 3 for less than twelve (12) hours.

85°F; or

b. --------------------------------NOTE-------------------------------

Only applicable when either unit has been in MODE 3 for at least twelve (12) hours but not more than twenty-four (24) hours.

87°F; or

c. --------------------------------NOTE-------------------------------

Only applicable when either unit has been in MODE 3 for at least twenty-four (24) hours.

88°F.

SR 3.7.1.3 Verify each RHRSW manual, power operated, and In accordance with automatic valve in the flow path, that is not locked, the Surveillance sealed, or otherwise secured in position, is in the correct Frequency Control position or can be aligned to the correct position. Program SR 3.7.1.4 Verify that valves HV-01222A and B (the spray array In accordance with bypass valves) close upon receipt of a closing signal and the Surveillance open upon receipt of an opening signal. Frequency Control Program SR 3.7.1.5 Verify that valves HV-01224A1 and B1 (the large spray In accordance with array valves) close upon receipt of a closing signal and the Surveillance open upon receipt of an opening signal. Frequency Control Program SUSQUEHANNA - UNIT 2 3.7-3a Amendment 180, 224, 247, XXX

RHRSW System and UHS 3.7.1 SURVEILLANCE REQUIREMENTS (continued)

SURVEILLANCE FREQUENCY SR 3.7.1.6 Verify that valves HV-01224A2 and B2 (the small spray In accordance with array valves) close upon receipt of a closing signal and the Surveillance open upon receipt of an opening signal. Frequency Control Program SR 3.7.1.7 Verify that valves 012287A and 012287B (the spray array In accordance with bypass manual valves) are capable of being opened and the Surveillance closed. Frequency Control Program SUSQUEHANNA - UNIT 2 3.7-3b Amendment 180, 224, XXX

RHRSW System and UHS 3.7.1 TABLE 3.7.1-1 Ultimate Heat Sink Spray Array Valves VALVE NUMBER VALVE DESCRIPTION HV-01224A1 Loop A large spray array valve HV-01224B1 Loop B large spray array valve HV-01224A2 Loop A small spray array valve HV-01224B2 Loop B small spray array valve SUSQUEHANNA - UNIT 2 3.7-3c Amendment 224, XXX

RHRSW System and UHS 3.7.1 TABLE 3.7.1-2 Ultimate Heat Sink Spray Array Bypass Valves VALVE NUMBER VALVE DESCRIPTION HV-01222A Loop A spray array bypass valve HV-01222B Loop B spray array bypass valve SUSQUEHANNA - UNIT 2 3.7-3d Amendment 224, XXX

RHRSW System and UHS 3.7.1 TABLE 3.7.1-3 Ultimate Heat Sink Spray Array Bypass Manual Valves VALVE NUMBER VALVE DESCRIPTION 012287A Loop A spray array bypass manual valve 012287B Loop B spray array bypass manual valve SUSQUEHANNA - UNIT 2 3.7-3e Amendment XXX

ESW System 3.7.2 3.7 PLANT SYSTEMS 3.7.2 Emergency Service Water (ESW) System LCO 3.7.2 Two ESW subsystems shall be OPERABLE.

APPLICABILITY: MODES 1, 2, and 3.

ACTIONS

---

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

Enter applicable Conditions and Required Actions of LCO 3.8.1, AC Sources, for DGs made inoperable by ESW.

CONDITION REQUIRED ACTION COMPLETION TIME A. One ESW pump in each A.1 Restore both ESW pumps to 7 days subsystem inoperable. OPERABLE status.

B. One or two ESW B.1 Restore ESW flow to the 14 days during the subsystems not capable required DGs to ensure that replacement of the of supplying ESW flow to each ESW subsystem is Unit 1 ESW piping(1) at least three required supplying at least three DGs. DGs. OR 7 days C. One ESW subsystem C.1 Restore the ESW 14 days during the inoperable for reasons subsystem to OPERABLE replacement of the other than Condition B. status. Unit 1 ESW piping(1)

OR 7 days (1)

This Completion Time is only applicable during the Unit 1 A and B ESW piping replacement while the compensatory measures identified in Section 3.3 of Enclosure 1 to letter PLA-7751 are in place. Upon completion of pipe replacement activities, this temporary extension is no longer applicable and will expire on June 25, 2026.

SUSQUEHANNA - UNIT 2 3.7-4 Amendment 151, XXX

Enclosure 3 of PLA-7793 Revised Clean Technical Specification Pages Revised Technical Specifications Pages Unit 1 TS Pages 3.7-2, 3.7-4, and 3.7-5 Unit 2 TS Pages 3.7-1, 3.7-2, 3.7-3, 3.7-3a, 3.7-3b, 3.7-3c, 3.7-3d, 3.7-3e, and 3.7-4

RHRSW System and UHS 3.7.1 ACTIONS (continued)

CONDITION REQUIRED ACTION COMPLETION TIME B. One Unit 1 RHRSW B.1 Restore the Unit 1 RHRSW 14 days during the subsystem inoperable. subsystem to OPERABLE replacement of the status. Unit 2 ESW piping(1)

OR 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> from discovery of the associated Unit 2 RHRSW subsystem inoperable AND 7 days C. Both Unit 1 RHRSW C.1 Restore one Unit 1 RHRSW 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> from discovery subsystems inoperable. subsystem to OPERABLE of one Unit 2 RHRSW status. subsystem not capable of supporting associated Unit 1 RHRSW subsystem AND 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> D. Required Action and D.1 Be in MODE 3. 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> associated Completion Time not met. AND OR D.2 Be in MODE 4. 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br /> UHS inoperable.

(1)

This Completion Time is only applicable during the Unit 2 A and B ESW piping replacement while the compensatory measures identified in Section 3.3 of Enclosure 1 to letter PLA-7751 are in place. Upon completion of pipe replacement activities, this temporary extension is no longer applicable and will expire on June 25, 2027.

SUSQUEHANNA - UNIT 1 3.7-2 Amendment 178, 182, 206, XXX

ESW System 3.7.2 3.7 PLANT SYSTEMS 3.7.2 Emergency Service Water (ESW) System LCO 3.7.2 Two ESW subsystems shall be OPERABLE.

APPLICABILITY: MODES 1, 2, and 3.

ACTIONS

---

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

Enter applicable Conditions and Required Actions of LCO 3.8.1, AC Sources, for DGs made inoperable by ESW.

CONDITION REQUIRED ACTION COMPLETION TIME A. One ESW pump in each A.1 Restore both ESW pumps to 7 days subsystem inoperable. OPERABLE status.

B. One or two ESW B.1 Restore ESW flow to the 14 days during the subsystems not capable required DGs to ensure that replacement of the of supplying ESW flow to each ESW subsystem is Unit 2 ESW piping(1) at least three required supplying at least three DGs. DGs. OR 7 days C. One ESW subsystem C.1 Restore the ESW 14 days during the inoperable for reasons subsystem to OPERABLE replacement of the other than Condition B. status. Unit 2 ESW piping(1)

OR 7 days (1)

This Completion Time is only applicable during the Unit 2 A and B ESW piping replacement while the compensatory measures identified in Section 3.3 of Enclosure 1 to letter PLA-7751 are in place. Upon completion of pipe replacement activities, this temporary extension is no longer applicable and will expire on June 25, 2027.

SUSQUEHANNA - UNIT 1 3.7-4 Amendment 178, XXX

ESW System 3.7.2 ACTIONS (continued)

CONDITION REQUIRED ACTION COMPLETION TIME D. Required Action and D.1 Be in MODE 3. 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> associated Completion Time of Condition A, B or AND C not met.

D.2 Be in MODE 4. 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br /> OR Both ESW subsystems inoperable for reasons other than Conditions A and B.

SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.7.2.1 ----------------------------------NOTE----------------------------------

Isolation of flow to individual components does not render ESW System inoperable.

Verify each ESW subsystem manual, power operated, In accordance with and automatic valve in the flow paths servicing safety the Surveillance related systems or components, that is not locked, Frequency Control sealed, or otherwise secured in position, is in the correct Program position.

SR 3.7.2.2 Verify each ESW subsystem actuates on an actual or In accordance with simulated initiation signal. the Surveillance Frequency Control Program SUSQUEHANNA - UNIT 1 3.7-5 Amendment 178, 266, XXX

RHRSW System and UHS 3.7.1 3.7 PLANT SYSTEMS 3.7.1 Residual Heat Removal Service Water (RHRSW) System and the Ultimate Heat Sink (UHS)

LCO 3.7.1 Two RHRSW subsystems and the UHS shall be OPERABLE.

APPLICABILITY: MODES 1, 2, and 3.

ACTIONS

---

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

Enter applicable Conditions and Required Actions of LCO 3.4.8, Residual Heat Removal (RHR)

Shutdown Cooling System-Hot Shutdown, for RHR shutdown cooling made inoperable by RHRSW System.

CONDITION REQUIRED ACTION COMPLETION TIME A. --------------NOTE------------ A.1 Declare the associated Immediately Separate Condition entry RHRSW subsystems is allowed for each valve. inoperable.

AND One valve in Table 3.7.1-1 inoperable. A.2 Establish an open flow path 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> to the UHS.

OR AND One valve in Table 3.7.1-2 inoperable. A.3 Restore the inoperable 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> from the valve(s) to OPERABLE discovery of an OR status. inoperable RHRSW subsystem in the One valve in Table opposite loop from the 3.7.1-3 inoperable. inoperable valve(s)

AND 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> (continued)

SUSQUEHANNA - UNIT 2 3.7-1 Amendment 151, 180, 224, 238, 248, XXX

RHRSW System and UHS 3.7.1 ACTIONS (continued)

CONDITION REQUIRED ACTION COMPLETION TIME OR OR Any combination of 7 days during the valves in Table 3.7.1-1, replacement of 480 V Table 3.7.1-2, or Table ESS Load Center 3.7.1-3 in the same return Transformers 1X210 loop inoperable. and 1X220 in Unit 1(1)

B. One Unit 2 RHRSW B.1 Restore the Unit 2 RHRSW 7 days during the subsystem inoperable. subsystem to OPERABLE replacement of 480 V status. ESS Load Center Transformers 1X210 and 1X220 in Unit 1(1)

OR 14 days during the replacement of the Unit 1 ESW piping(2)

OR 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> from discovery of the associated Unit 1 RHRSW subsystem inoperable AND 7 days (1)

Upon completion of the replacement of the 480 V ESS Load Center Transformers 1X210 and 1X220 in Unit 1, this temporary extension is no longer applicable and will expire on June 15, 2020.

(2)

This Completion Time is only applicable during the Unit 1 A and B ESW piping replacement while the compensatory measures identified in Section 3.3 of Enclosure 1 to letter PLA-7751 are in place. Upon completion of pipe replacement activities, this temporary extension is no longer applicable and will expire on June 25, 2026.

SUSQUEHANNA - UNIT 2 3.7-2 Amendment 151, 156, 180, 238, 248, XXX

RHRSW System and UHS 3.7.1 ACTIONS (continued)

CONDITION REQUIRED ACTION COMPLETION TIME C. Both Unit 2 RHRSW C.1 Restore one Unit 2 RHRSW 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> from discovery subsystems inoperable. subsystem to OPERABLE of one Unit 1 RHRSW status. subsystem not capable of supporting associated Unit 2 RHRSW subsystem AND 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> D. Required Action and D.1 Be in MODE 3. 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> associated Completion Time not met. AND OR D.2 Be in MODE 4. 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br /> UHS inoperable.

SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.7.1.1 Verify the water level is greater than or equal to 678 feet In accordance with 1 inch above Mean Sea Level. the Surveillance Frequency Control Program SUSQUEHANNA - UNIT 2 3.7-3 Amendment 151, 156, 180, 224, 247, XXX

RHRSW System and UHS 3.7.1 SURVEILLANCE REQUIREMENTS (continued)

SURVEILLANCE FREQUENCY SR 3.7.1.2 Verify the average water temperature of the UHS is: In accordance with the Surveillance

a. --------------------------------NOTE------------------------------- Frequency Control Only applicable with both units in MODE 1 or 2, or Program with either unit in MODE 3 for less than twelve (12) hours.

85°F; or

b. --------------------------------NOTE-------------------------------

Only applicable when either unit has been in MODE 3 for at least twelve (12) hours but not more than twenty-four (24) hours.

87°F; or

c. --------------------------------NOTE-------------------------------

Only applicable when either unit has been in MODE 3 for at least twenty-four (24) hours.

88°F.

SR 3.7.1.3 Verify each RHRSW manual, power operated, and In accordance with automatic valve in the flow path, that is not locked, the Surveillance sealed, or otherwise secured in position, is in the correct Frequency Control position or can be aligned to the correct position. Program SR 3.7.1.4 Verify that valves HV-01222A and B (the spray array In accordance with bypass valves) close upon receipt of a closing signal and the Surveillance open upon receipt of an opening signal. Frequency Control Program SR 3.7.1.5 Verify that valves HV-01224A1 and B1 (the large spray In accordance with array valves) close upon receipt of a closing signal and the Surveillance open upon receipt of an opening signal. Frequency Control Program SUSQUEHANNA - UNIT 2 3.7-3a Amendment 180, 224, 247, XXX

RHRSW System and UHS 3.7.1 SURVEILLANCE REQUIREMENTS (continued)

SURVEILLANCE FREQUENCY SR 3.7.1.6 Verify that valves HV-01224A2 and B2 (the small spray In accordance with array valves) close upon receipt of a closing signal and the Surveillance open upon receipt of an opening signal. Frequency Control Program SR 3.7.1.7 Verify that valves 012287A and 012287B (the spray array In accordance with bypass manual valves) are capable of being opened and the Surveillance closed. Frequency Control Program SUSQUEHANNA - UNIT 2 3.7-3b Amendment 180, 224, XXX

RHRSW System and UHS 3.7.1 TABLE 3.7.1-1 Ultimate Heat Sink Spray Array Valves VALVE NUMBER VALVE DESCRIPTION HV-01224A1 Loop A large spray array valve HV-01224B1 Loop B large spray array valve HV-01224A2 Loop A small spray array valve HV-01224B2 Loop B small spray array valve SUSQUEHANNA - UNIT 2 3.7-3c Amendment 224, XXX

RHRSW System and UHS 3.7.1 TABLE 3.7.1-2 Ultimate Heat Sink Spray Array Bypass Valves VALVE NUMBER VALVE DESCRIPTION HV-01222A Loop A spray array bypass valve HV-01222B Loop B spray array bypass valve SUSQUEHANNA - UNIT 2 3.7-3d Amendment 224, XXX

RHRSW System and UHS 3.7.1 TABLE 3.7.1-3 Ultimate Heat Sink Spray Array Bypass Manual Valves VALVE NUMBER VALVE DESCRIPTION 012287A Loop A spray array bypass manual valve 012287B Loop B spray array bypass manual valve SUSQUEHANNA - UNIT 2 3.7-3e Amendment XXX

ESW System 3.7.2 3.7 PLANT SYSTEMS 3.7.2 Emergency Service Water (ESW) System LCO 3.7.2 Two ESW subsystems shall be OPERABLE.

APPLICABILITY: MODES 1, 2, and 3.

ACTIONS

---

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

Enter applicable Conditions and Required Actions of LCO 3.8.1, AC Sources, for DGs made inoperable by ESW.

CONDITION REQUIRED ACTION COMPLETION TIME A. One ESW pump in each A.1 Restore both ESW pumps to 7 days subsystem inoperable. OPERABLE status.

B. One or two ESW B.1 Restore ESW flow to the 14 days during the subsystems not capable required DGs to ensure that replacement of the of supplying ESW flow to each ESW subsystem is Unit 1 ESW piping(1) at least three required supplying at least three DGs. DGs. OR 7 days C. One ESW subsystem C.1 Restore the ESW 14 days during the inoperable for reasons subsystem to OPERABLE replacement of the other than Condition B. status. Unit 1 ESW piping(1)

OR 7 days (1)

This Completion Time is only applicable during the Unit 1 A and B ESW piping replacement while the compensatory measures identified in Section 3.3 of Enclosure 1 to letter PLA-7751 are in place. Upon completion of pipe replacement activities, this temporary extension is no longer applicable and will expire on June 25, 2026.

SUSQUEHANNA - UNIT 2 3.7-4 Amendment 151, XXX