ML21251A160

Technical Requirements Manual - Vol 1 - (Revision 127 Dated 08/17/2021)

ML21251A160
Person / Time
Site:	Fermi
Issue date:	08/17/2021
From:	Detroit Edison, Co
To:	Office of Nuclear Reactor Regulation
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DETROIT EDISON - FERMI 2 AUTOMATED RECORD MANAGEMENT DISTRIBUTION CONTROL LIST To: 00935 08/20/21

US NRC PAGE 1 DOCUMENT CNTRL DESK 11555 ROCKVILLE PIKE ROCKVILLE, MD 20852

Media : 8 1/2 X 11

DTC Doc. Serial Number Number Cnt Issue Page Rev Copies Lvl Date Sec Status TMTRM TRM VOL I 127 1 IR 08/17/21 AFC =--=-- - --------=-===============================================================

Please destroy or mark all revised, superseded, or cancelled documents as such. CONTROLLED stamps must be voided by lining through and initialing.

Detroit Edison EF2, C/O Info Mgmt 140 NOC, 6400 North Dixie Highway, Newport MI 48166. (734) 586-4338 OR (734 ) 586-4061 for questions or concerns.

Ref : u33920 LICENSING DOCUMENT TRANSMITTAL FERMI 2 TECHNICAL REQUIREMENTS MANUAL - VOL I Revision 127 dated 08/17/2021 Immediately, upon receipt of the item(s) below, please insert and/or remove the pages indicated.

Destroy the removed pages. Be sure that Revision 126 has been inserted prior to inserting these pages.

SECTION REMOVE and DESTROY INSERT

In Front of TRM Manual Title Page Rev 126 07/29/2021 Title Page Rev 127 08/17/2021

Immediately following List of Effective Pages List of Effective Pages Title Page LEP-1 through LEP-4 Rev 126 LEP-1 through LEP-4 Rev 127 08/17/2021 07/29/2021

3.3 Instrumentation TRM 3.3-38 Rev 31 10/99 TRM 3.3-38 Rev 127 08/21

3. 7 Plant Systems TRM 3.7-14 Rev 121 12/19 TRM 3.7-14 Rev 127 08/21

3.12 Fire Protection TRM 3.12-8 Rev 112 06/18 TRM 3.12-8 Rev 127 08/21 TRM 3.12-11 Rev 49 09/01 TRM 3.12-11 Rev 127 08/21 TRM 3.12-14 Rev 31 10/99 TRM 3.12-14 Rev 127 08/21 TRM 3.12-30 Rev 31 10/99 TRM 3.12-30 Rev 127 08/21

• B3.12 Fire Protection TRM B3.12.2-1 Rev 112 06/18 TRM B3.12.2-1 Rev 127 08/21

Note: The changes above reflect those justified and described in LCR#s 20-036-TRM and 21-004-TRM.

END

Fermi 2

Technical Requirements Manual

Volume I

DTE Electric

ARMS - INFORMATION DTC: TMTRM File: 1754 Rev: 127 Date 08/17/2021 FERMI 2 - TECHNICAL REQUIREMENTS MANUAL VOL I

LIST OF EFFECTIVE PAGES

Page Revision Page Revision

• TRM i Revision 106 TRM 3.3-30 Revision 31

TRM ii Revision 107 TRM 3.3-31 Revision 31 TRM iii Revision 105 TRM 3.3-32 Revision 31 TRM iv Revision 106 TRM 3.3-33 Revision 125 TRM V Revision 107 TRM 3.3-34 Revision 31 TRM vi Revision 31 TRM 3.3-34a Revision 106 TRM 1.0-a Revision 31 TRM 3.3-35 Revision 60 TRM 1. 0-1 Revision 31 TRM 3.3-36 Revision 104 TRM 2.0-1 Revision 31 TRM 3.3-37 Revision 72 TRM 3.0-a Revision 31 TRM 3.3-38 Revision 127 TRM 3.0-1 Revision 63 TRM 3.3-39 Revision 31 TRM 3.0-2 Revision 72 TRM 3.3-40 Revision 56 TRM 3.0-3 Revision 54 TRM 3.3-41 Revision 56 TRM 3.0-4 Revision 72 TRM 3.3-42 Revision 45 TRM 3.1-a Revision 31 TRM 3.3-43 Revision 62 TRM 3.1-1 Revision 31 TRM 3.3-44 Revision 72 TRM 3.2-1 Revision 31 TRM 3.3-45 Revision 31 TRM 3.3-a Revision 31 TRM 3.3-46 Revision 31 TRM 3.3-b Revision 31 TRM 3.3-47 Revision 31 TRM 3.3-c Revision 106 TRM 3.3-48 Revision 125 TRM 3.3-d Revision 31 TRM 3.3-49 Revision 31 TRM 3.3-1 Revision 120 TRM 3.4-a Revision 31 TRM 3.3-2 Revision 116 TRM 3.4-1 Revision 36 TRM 3.3-3 Revision 31 TRM 3.4-la Revision 71 TRM 3.3-4 Revision 31 TRM 3.4-lb Revision 71

• TRM 3.3-5 Revision 31 TRM 3.4-2 Revision 125 TRM 3.3-6 Revision 125 TRM 3.4-3 Revision 125 TRM 3.3-7 Revision 31 TRM 3.4-4 Revision 31 TRM 3.3-8 Revision 106 TRM 3.4-5 Revision 31 TRM 3.3-9 Revision 31 TRM 3.4-6 Revision 31 TRM 3.3-10 Revision 106 TRM 3.4-7 Revision 31 TRM 3.3-11 Revision 31 TRM 3.4-8 Revision 31 TRM 3.3-12 Revision 67 TRM 3.4-9 Revision 31 TRM 3.3-13 Revision 74 TRM 3.4-10 Revision 125 TRM 3.3-13a Revision 125 TRM 3.5-1 Revision 31 TRM 3.3-14 Revision 67 TRM 3.6-a Revision 70 TRM 3.3-15 Revision 31 TRM 3.6-1 Revision 125 TRM 3.3-16 Revision 31 TRM 3.6-2 Revision 67 TRM 3.3-17 Revision 31 TRM 3.6-3 Revision 123 TRM 3.3-18 Revision 100 TRM 3.6-4 Revision 123 TRM 3.3-19 Revision 31 TRM 3.6-5 Revision 123 TRM 3.3-20 Revision 31 TRM 3.6-6 Revision 123 TRM 3.3-21 Revision 124 TRM 3.6-7 Revision 123 TRM 3.3-22 Revision 124 TRM 3.6-8 Revision 123 TRM 3.3-23 Revision 124 TRM 3.6-9 Revision 123 TRM 3.3-24 Revision 31 TRM 3.6-10 Revision 123 TRM 3.3-25 Revision 31 TRM 3. 6-11 Revision 123 TRM 3.3-26 Revision 31 TRM 3.6-12 Revision 123 TRM 3.3-27 Revision 125 TRM 3.6-13 Revision 123 TRM 3.3-28 Revision 76 TRM 3.6-14 Revision 123 TRM 3.3-29 Revision 125 TRM 3.6-14a Revision 123 TRM Vol. I LEP-1 REV 127 08/17/2021 FERMI 2 - TECHNICAL REQUIREMENTS MANUAL VOL I

LIST OF EFFECTIVE PAGES

Page Revision Page Revision

• TRM 3.6-15 Revision 123 TRM 3.8-9 Revision 125

TRM 3.6-16 Revision 123 TRM 3.8-10 Revision 125 TRM 3.6-17 Revision 123 TRM 3. 8-11 Revision 123 TRM 3.6-18 Revision 123 TRM 3.8-12 Revision 31 TRM 3.6-19 Revision 123 TRM 3.8-13 Revision 61 TRM 3.6-20 Revision 123 TRM 3.8-14 Revision 125 TRM 3.6-21 Revision 123 TRM 3.8-15 Revision 31 TRM 3.6-22 Revision 123 TRM 3.8-16 Revision 31 TRM 3.6-23 Revision 123 TRM 3.8-17 Revision 125 TRM 3.6-24 Revision 123 TRM 3.8-18 Revision 33 TRM 3.6-25 Revision 31 TRM 3.9-a Revision 31 TRM 3.6-26 Revision 31 TRM 3.9-1 Revision 31 TRM 3.6-27 Revision 31 TRM 3.9-2 Revision 65 TRM 3.6-28 Revision 125 TRM 3.9-3 Revision 80 TRM 3.6-29 Revision 31 TRM 3.9-4 Revision 88 TRM 3.6-30 Revision 31 TRM 3.9-5 Revision 31 TRM 3.6-31 Revision 125 TRM 3.10-1 Revision 31 TRM 3.6-32 Revision 70 TRM 3.11-a Revision 31 TRM 3.6-33 Revision 31 TRM 3.11-1 Revision 31 TRM 3.6-34 Revision 31 TRM 3.12-a Revision 31 TRM 3.6-35 Revision 31 TRM 3.12-1 Revision 75 TRM 3.7-a Revision 107 TRM 3.12-2 Revision 31 TRM 3.7-1 Revision 60 TRM 3.12-3 Revision 31 TRM 3.7-2 Revision 107 TRM 3.12-4 Revision 102 TRM 3.7-3 Revision 70 TRM 3.12-5 Revision 108

• TRM 3.7-4 Revision 73 TRM 3.12-6 Revision 53 TRM 3.7-5 Revision 31 TRM 3.12-7 Revision 31 TRM 3.7-6 Revision 31 TRM 3.12-8 Revision 127 TRM 3.7-7 Revision 31 TRM 3.12-9 Revision 40 TRM 3.7-8 Revision 31 TRM 3.12-10 Revision 31 TRM 3.7-9 Revision 31 TRM 3.12-11 Revision 127 TRM 3.7-10 Revision 44 TRM 3.12-12 Revision 31 TRM 3. 7-11 Revision 31 TRM 3.12-13 Revision 75 TRM 3.7-12 Revision 72 TRM 3.12-14 Revision 127 TRM 3.7-13 Revision 31 TRM 3.12-15 Revision 31 TRM 3.7-14 Revision 127 TRM 3.12-16 Revision 75 TRM 3.7-15 Revision 115 TRM 3.12-17 Revision 3,1 TRM 3.7-16 Revision 115 TRM 3.12-18 Revision 75 TRM 3.7-17 Revision 115 TRM 3.12-19 Revision 31 TRM 3.7-18 Revision 120 TRM 3.12-20 Revision 75 TRM 3.7-19 Revision 31 TRM 3.12-21 Revision 31 TRM 3.7-20 Revision 79 TRM 3.12-22 Revision 31 TRM 3.8-a Revision 31 TRM 3.12-23 Revision 31 TRM 3.8-1 Revision 31 TRM 3.12-24 Revision 31 TRM 3.8-2 Revision 31 TRM 3.12-25 Revision 31 TRM 3.8-3 Revision 96 TRM 3.12-26 Revision 75 TRM 3.8-4 Revision 113 TRM 3.12-27 Revision 31 TRM 3.8-5 Revision 125 TRM 3.12-28 Revision 31 TRM 3.8-6 Revision 125 TRM 3.12-29 Revision 78 TRM 3.8-7 Revision 125 TRM 3.12-30 Revision 127 TRM 3.8-8 Revision 125 TRM 4.0-1 Revision 31 TRM Vol. I LEP-2 REV 127 08/17/2021 FERMI 2 - TECHNICAL REQUIREMENTS MANUAL VOL I

LIST OF EFFECTIVE PAGES

Revision Revision

• TRM 5.0-a Revision 105 TRM B3.4.6-1 Revision 31 TRM 5.0-1 Revision 119 TRM B3.4.7-1 Revision 31 TRM 5.0-2 Revision 105 TRM B3.5-1 Revision 31 TRM B1.0-1 Revision 31 TRM B3.6.1-1 Revision 31 TRM B2.. 0-1 Revision 31 TRM B3.6.2-1 Revision 67 TRM B3.0-1 Revision 63 TRM B3.6.3-1 Revision 87 TRM B3.0-2 Revision 63 TRM B3.6.4-1 Revision 31 TRM B3.0-2a Revision 72 TRM B3.6.5-1 Revision 31 TRM B3.0-2b Revision 72 TRM B3.6.6-1 Revision 70 TRM B3.0-2c Revision 72 TRM B3.6.7-1 Revision 31 TRM B3.0-3 Revision 31 TRM B3.6.8-1 Revision 31 TRM B3.0-4 Revision 31 TRM B3.7.1-1 Revision 31 TRM B3.0-5 Revision 54 TRM B3.7.2-1 Revision 107 TRM B3.0-6 Revision 72 TRM B3.7.3-1 Revision 73 TRM B3.0-7 Revision 72 TRM B3.7.4-1 Revision 31 TRM B3.1-1 Revision 31 TRM B3.7.4-2 Revision 31 TRM B3.2-1 Revision 31 TRM B3.7.5-1 Revision 31 TRM B3.3.1-1 Revision 31 TRM B3.7.6-1 Revision 31 TRM B3.3.1-2 Revision 31 TRM B3.7.7-1 Revision 99 TRM B3.3.2-1 Revision 31 TRM B3.7.8-1 Revision 31 TRM B3.3.2-2 Revision 31 TRM B3.7.9-1 Revision 79 TRM B3.3.3-1 Revision 67 TRM B3.8.1-1 Revision 31 TRM B3.3.4-1 Revision 31 TRM B3.8.2-1 Revision 31 TRM B3.3.4-2 Revision 126 TRM B3.8.3-1 Revision 96 TRM B3.3.5-1 Revision 31 TRM B3.8.4-1 Revision 31 TRM B3.3.5-2 Revision 31 TRM B3.8.5-1 Revision 31

• TRM B3.3.6-1 Revision 116 TRM B3.8.6-1 Revision 125 TRM B3.3.6-2 Revision 31 TRM B3.9.1-1 Revision 31 TRM B3.3.6-3 Revision 31 TRM B3.9.2-1 Revision 65 TRM B3.3.6-4 Revision 31 TRM B3.9.3-1 Revision 31 TRM B3.3.6-5 Revision 76 TRM B3.9.4-1 Revision 31 TRM B3.3.6-6 Revision 76 TRM B3.10-1 Revision 31 TRM B3.3.7-1 Revision 31 TRM B3.11.1-1 Revision 31 TRM B3.3.7-2 Revision 31 TRM B3.12.1-1 Revision 31 TRM B3.3.7-3 Revision 106 TRM B3.12.2-1 Revision 127 TRM B3.3.8-1 Revision 31 TRM B3.12.3-1 Revision 31 TRM B3.3.9-1 Revision 31 TRM B3.12.4-1 Revision 31 TRM B3.3.10-1 Revision 56 TRM B3.12.5-1 Revision 31 TRM B3. 3. 11-1 Revision 45 TRM B3.12.6-1 Revision 31 TRM B3.3.12-1 Revision 62 TRM B3.12.7-1 Revision 31 TRM B3.3.13-1 Revision 31 TRM B3.12.8-1 Revision 118 TRM B3.3.14-1 Revision 31 TRM B3.4.1-1 Revision 31 TRM B3.4.1-2 Revision 71 TRM B3.4.1-3 Revision 71 TRM B3.4.1-4 Revision 71 TRM B3.4.1-5 Revision 71 TRM B3.4.2-1 Revision 31 TRM B3.4.3-1 Revision 31 TRM B3.4.4-1 Revision 31 TRM B3.4.5-1 Revision 31 TRM Vol. I LEP-3 REV 127 08/17/2021 FERMI 2 - TECHNICAL REQUIREMENTS MANUAL VOL I

LIST OF EFFECTIVE PAGES

• CORE OPERATING LIMITS REPORT COLR 21, Revision 0

Page Revision

Notation Page 1 0 2 0 3 0 4 0-5 0 6 0 7 0 8 0 9 0 10 0 11 0 12 0 13 0 14 0 15 0 16 0 17 0 18 0 19 0

• 20 0 21 0 22 0 23 0 24 0 25 0 26 0 27 0 28 0 29 0 30 0 31 0

TRM Vol. I LEP-4 REV 127 08/17/2021 Appendix R Alternative Shutdown Instrumentation TR 3.3.9

• ACTIONS (continued)

CONDITION REQUIRED ACTION COMPLETION TIME

D. As required by D.1 Restore channel to 7 days Required Action A.1 OPERABLE status.

and referenced in Table TR3.3.9-1.

E. Required Action and E.1 Enter TRLCO 3.0.3. Immediately associated Completion Time of Condition D not met.

SURVEILLANCE REQUIREMENTS

---

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

These SRs apply to each Function in Table TR3.3.9-1.

SURVEILLANCE FREQUENCY

• TRSR 3.3.9.1 Perform CHANNEL CHECK. 31 days

TRSR 3.3.9.2 Perform CHANNEL CALIBRATION. 24 months

TRM Vol. I TRM 3.3-38 REV 127 08/21 Appendix R Alternative Shutdown Auxiliary Systems TR 3.7.7

• SURVEILLANCE REQUIREMENTS

SURVEILLANCE FREQUENCY

TRSR 3.7.7.1 For the SBFW system, verify by venting at 31 days the high point vents that the system piping from the pump discharge to the system isolation valves is filled with water.

TRSR 3.7.7.2 For the SBFW system, verify that each valve 31 days (manual, power-operated or automatic) in the flow path that is not locked, sealed, or otherwise secured in position, is in the correct position.

TRSR 3.7.7.3 For CTG 11 Unit 1, start and supply load of 31 days at least 10 MW to the Peaker Bus.

TRSR 3.7.7.4 Verify that each SBFW pump develops a flow 46 days of> 600 gpm in a test flow path with a on a STAGGERED system head corresponding to the reactor TEST BASIS

• vessel operating pressure including injection line losses.

TRSR 3.7.7.5 For the drywell cooling units, o~erate the 46 days unit for 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> with the fan in "HIGH" on a STAGGERED speed. TEST BASIS

TRSR 3.7.7.6 Verify each required alternative shutdown 24 months system control circuit in Table TR3.7.7-1 is capable of performing its intended function ( s).

TRM Vol. I TRM 3.7-14 REV 127 08/21 Fire Suppression Water System TR 3.12.2

• TR 3.12 FIRE PROTECTION

TR 3.12.2 Fire Suppression Water System

TRLCO 3.12.2 The fire suppression water system shall be OPERABLE with:

a. Two fire suppression pumps, each with a capacity of 2500 gpm at 150 psig, with their discharge aligned to the fire suppression header;

b. The general service water intake structure water level

~ 562 feet; and

c. An OPERABLE flow path capable of taking suction from the general service water intake structure and transferring the water through distribution piping with OPERABLE sectionalizing control or isolation valves to the yard hydrant curb valves, the last valve ahead of the water flow alarm device in each sprinkler or hose standpipe and the last valve ahead of the spray system required to be OPERABLE per TRLCO 3.12.3, TRLCO 3.12.6, and TRLCO 3.12.7.

APPLICABILITY: At all times.

ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME

• A. One fire suppression A.1 Restore the 14 days pump inoperable. inoperable pump to OPERABLE status.

OR A.2 Provide an alternate 14 days backup pump.

B. The fire suppression B.1 Establish backup fire 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> water system suppression water inoperable for reasons system.

other than Condition OR A.

B.2 Perform evaluation to 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> determine extent of inoperability and establish required compensatory measures.

c. Required Actions and C.1 Be in MODE 2. 7 hours8.101852e-5 days <br />0.00194 hours <br />1.157407e-5 weeks <br />2.6635e-6 months <br /> associated Completion AND Time of Condition B --

not met. C.2 Be in MODE 3. 13 hours1.50463e-4 days <br />0.00361 hours <br />2.149471e-5 weeks <br />4.9465e-6 months <br />

--AND C.3 Be in MODE 4. 37 hours4.282407e-4 days <br />0.0103 hours <br />6.117725e-5 weeks <br />1.40785e-5 months <br /> TRM Vol. I TRM 3.12-8 REV 127 08/21 Fire Suppression Water System TR 3.12.2

• SURVEILLANCE REQUIREMENTS (continued)

SURVEILLANCE FREQUENCY

TRSR 3.12. 2.13 --------------------NOTE-------------------

Measured performance shall be recorded at minimum and rated loads.

Verify that each fire pump develops a 18 months minimum calculated value of 2500 gpm at 150 psig at the discharge flange of the pump adjusted for the minimum allowed lake level of 562'-0".

TRSR 3.12.2.14 Cycle each valve in the flow path that is 18 months not testable during plant operation through at least one complete cycle of full travel.

TRSR 3.12.2.15 Verify that each fire suppression pump 18 months starts sequentially to maintain the fire suppression water system pressure> 105 psig.

TRSR 3.12.2.16 Inspect the diesel of the diesel-driven fire suppression pump to an inspection in accordance with procedures prepared in 18 months conjunction with its manufacturer's recommendations for the class of service.

TRSR 3.12.2.17 Verify the diesel-driven fire pump starting 18 months 24-volt battery bank battery and battery racks, show no visual indication of physical damage or abnormal deterioration.

(continued)

TRM Vol. I TRM 3.12-11 REV 127 08/21 Spray and Sprinkler Systems TR 3.12.3

• SURVEILLANCE REQUIREMENTS

---

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

These SRs apply to each Area in Table TR3.12.3-1.

SURVEILLANCE FREQUENCY

TRSR 3.12.3.1 -------------------NOTE--------------------

For valves that are not accessible during unit operation, not required to be performed in MODES 1, 2, and 3, or MODE 4 of< 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

Verify each manual, powered-operated, or 31 days automatic valve in the flow path is in its correct position.

TRSR 3.12.3.2 -------------------NOTE---------.----------

For valves that are not accessible during unit operation, not required to be performed in MODES 1, 2, and 3, or MODE 4 of< 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

Cycle each testable valve in the flow path 12 months through at least one complete cycle of full travel.

TRSR 3.12.3.3 -------------------NOTE--------------------

The ventilation room manual flooding system is exempt from the automatic actuation.

Perform a system functional test, which 24 months includes the simulated automatic actuation of each system by opening the inspectors test valve and verifying the water flow alarm annunciator.

TRSR 3.12.3.4 Perform a visual inspection of the 24 months sprinkler header to verify its integrity.

TRM Vol. I TRM 3.12-14 REV 127 08/21 Fire Rated Assemblies TR 3.12.8

• SURVEILLANCE REQUIREMENTS

SURVEILLANCE FREQUENCY

TRSR 3.12.8.1 Verify that each unlocked fire door without 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> electrical supervision is closed.

TRSR 3.12.8.2 Verify the position of each locked-closed 7 days fire door.

TRSR 3.12.8.3 Perform a CHANNEL FUNCTIONAL TEST of each 31 days fire door supervision system for each electrically supervised fire door.

TRSR 3.12.8.4 Inspect the automatic hold-open, release 184 days and closing mechanism and latches.

TRSR 3.12.8.5 Visually inspect the exposed surfaces of 24 months

• each fire rated assembly.

TRSR 3.12.8.6 Visually inspect each fire damper and 24 months associated hardware.

TRSR 3.12.8.7 -------------------NOTE-------------------- ------NOTE-------

Penetration seals inside electrical Samples shall be conduits need not be inspected under this selected such TRSR if they meet the requirements of UFSAR that each Section 9A.2.3.1.1 for not requiring seals penetration seal to prevent the passage of heat and fire. is inspected at least once per 20 years.

Visually inspect 10% of each type of sealed 24 months penetration. If apparent changes in appearance or abnormal degradations are found, a visual inspection of an additional 10% of each type of sealed penetration shall be made. This inspection process shall continue until a 10% sample with no apparent changes in appearance or abnormal degradation is found.

TRM Vol. I TRM 3.12-30 REV 127 08/21 Fire Suppression Water System TR B3.12.2

• TR B3.12 FIRE PROTECTION

TR B3.12.2 Fire Suppression Water System

BASES

The OPERABILITY of the fire suppression systems ensures that adequate fire suppression capability is available to confine and extinguish fires occurring in any portion of the facility where safety-related equipment is located. The fire suppression systems consists of the water system, spray and/or sprinkler systems, CO2 systems, Halon systems, and fire hose stations. The collective capability of the fire suppression systems is adequate to minimize potential damage to safety-related equipment and is a major element in the facility fire protection program.

In the event that portions of the fire suppression systems are inoperable, alternate backup fire fighting equipment is required to be made available in the affected areas until 'the inoperable equipment is restored to service. When the inoperable fire fighting equipment is intended for use as a backup means of fire suppression, a longer period of time is allowed to provide an alternate means of fire fighting than if the inoperable equipment is the primary means of fire suppression.

The surveillance requirements provide assurances that the minimum OPERABILITY requirements of the fire suppression systems are met. An allowance is made for ensuring a sufficient volume of Halon in the Halon storage tanks by verifying the weight and pressure of the tanks.

• An exception is made to TRSR 3.12.2.6 and TRSR 3.12.2.11 for valves not accessible during unit operation. The valve that meets this criterion is T8000F037.

The pressure and flow rate requirements for TRLCO 3.12.2, as verified in TRSR 3.12.2.13, are derived from the base fire pump information in DC-5713.

In the event the fire suppression water system becomes inoperable, immediate compensatory measures must be taken since this system provides the major fire suppression capability of the plant.

It may be necessary to perform a fire protection engineering evaluation to determine the extent of inoperability of the fire suppression water system. The evaluation would also determine which conditions in TRLCO 3.12.3, TRLCO 3.12.6, and TRLCO 3.12.7 are applicable based on the fire suppression water system inoperability. The evaluation may determine that required actions in these other TRLCOs are adequate compensatory measures. If the evaluation determines there are no adequate compensatory measures and no backup fire suppression water system can be established within the allowed time, then entry into Action C is required.

TRM Vol. I TRM B3.12.2-1 REV. 127 08/21