ML19024A474

Attachment 4 - FSAR Technical Requirements I 6.7.13

ML19024A474
Person / Time
Site:	Callaway
Issue date:	01/23/2019
From:	Ameren Missouri
To:	Office of Nuclear Reactor Regulation
Shared Package
ML19024A469	List: ML19024A471 ML19024A472 ML19024A474 ML19024A475 ULNRC-06477, Supplement to License Amendment Request for Additional of New Technical Specification 3.7.20, Class IE Electrical Equipment Air Conditioning (A/C) System (LDCN 16-0013)
References
LDCN 16-0013, ULNRC-06477
Download: ML19024A474 (3)

Text

Attachment 4 to ULNRC-06477 Page 1 of3 Attachment 4 FSAR Technical Requirements I 6.7.13 167x Rev.OLx xx/xx

Attachment 4 to ULNRC-06477 Page 2 of 3 16.7.13 CLASS IE ELECTRICAL EQUIPMENT AIR CONDITIONING (A/C)

SUPPLEMENTAL COOLING SYSTEM 16.7.13.1 LIMITING CONDITION FOR OPERATION Two Class I E Electrical Equipment NC Supplemental Cooling trains shall be FUNCTIONAL.

APPLICABILITY: MODES , 2, 3, and 4.

ACTIONS:

With the above requirements not satisfied:

a. With one Class I E Electrical Equipment A/C Supplemental Cooling train nonfunctional, restore the Class I E A/C Supplemental Cooling train to EU NCTI ONAL status with i n 30 days.

b. With two Class I E Electrical Equipment NC Supplemental Cooling trains nonfunctional, restore one Class I E Electrical Equipment NC Supplemental Cooling train to FUNCTIONAL status within 7 days.

c. With Action a or b not met, enter Section 16.0.1.3.

16.7.13.1.1 SURVEILLANCE REQUIREMENTS

a. Verify each Class I E Electrical Equipment NC Supplemental Cooling system train is available at least once per 30 days.

b. Verify each Class I E Electrical Equipment A/C Supplemental Cooling system train actuates and provides recirculation air flow at least once per I 8 months.

16.7.13.1.2 BASES Technical Specification 3.7.20, Class I E Electrical Equipment Air Conditioning (A/C)

System, specifies requirements for the Class I E electrical equipment air conditioning (A/C) system. The Class I E electrical equipment NC system provide a suitable environment for the Class I E electrical equipment within the Control Building. The system consists of two independent trains such that each train is normally aligned to cool only the equipment associated with its emergency load group.

The Class I E electrical equipment A/C trains are designed to provide temperature control for the Engineered Safety Features (ESF) switchgear room components, DC switchboard room components, and NK battery room components during normal and emergency conditions.

16.Zx Rev.OLx xx/xx

Attachment 4 to ULNRC-06477 Page 3 of 3 The specific rooms supplied by the Cass I E electrical equipment A/C trains are as follows:

SGKO5A SGKO5B SWBD RM No. 1 (3408) SWBD RM No. 4 (3404)

$WBD RM No. 3 (3414) $WBD RM No. 2 (3410)

Battery RM No. 1 (3407) Battery RM No. 4 (3405)

Battery Rl\4 No. 3 (3413) Battery RM No. 2 (3411)

E$F $WGR KM No. 1 (3301) ESF $WGR P.M No. 2 (3302)

With one Class I E electrical equipment A/C train inoperable, the Class I E Electrical Equipment NC Supplemental Cooling system can be employed to enable the remaining Class I E electrical equipment NC train to provide adequate area cooling for both trains of electrical equipment during normal and accident conditions. The supplemental cooling system serves to promote the circulation of cool air from one Class I E electrical equipment A/C train to the rooms/areas of both Class I E electrical equipment trains. To initiate operation of a supplemental cooling train, manual operator action is required to open the motorized control dampers and start the recirculation fans using hand switches located at a panel on the 2000 level of the Control Building.

Specifically, with one of the Class I E electrical equipment NC trains required by TS 3.7.20 inoperable, Required Action A.1 ofTS 3.7.20 requires immediately initiating action to implement mitigating actions. The mitigating actions to be taken are to start the appropriate train of supplemental cooling, consistent with the intended use of the system.

Surveillance 16.7.13.1.la requires verifyingthe availabilityofeach Class IE electrical equipment NC supplemental cooling subsystem train. This verification includes a check of breaker position and indication lights to ensure the equipment is available. The Surveillance interval of 30 days is reasonable based on the supplemental cooling subsystem typically being in a standby condition.

Surveillance I 6.7.1 3.1 .1 b requires verifying the proper actuation of each Class I E electrical equipment NC supplemental cooling subsystem fan and associated dampers, including verifying that each train provides recirculation air flow. This involves starting each recirculation subsystem train and verifying fan-running indication as well as correct damper positions and indication. The Surveillance interval of I 8 months is consistent with similar surveillances based on the typical industry refueling cycle.

References:

FSAR Section 9.4, License Amendment 2_ to the Callaway Operating License 16.7x Rev.OLx xx/xx