ML20072H057

Proposed TS 3.9.C,allowing Shutdown Operations W/Only One of Two Required EDGs Aligned to Corresponding Core or Containment Cooling Sys

ML20072H057
Person / Time
Site:	Hatch
Issue date:	08/16/1994
From:	GEORGIA POWER CO.
To:
Shared Package
ML20072H044	List: HL-4648, Application for Amend to License DPR-57,proposing one-time Change to TS 3.9.C to Allow Shutdown Operations W/Only One of Two Required EDGs Aligned to Corresponding Core or Containment Cooling Sys ML20072H057
References
NUDOCS 9408250194
Download: ML20072H057 (3)

Text

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Enclosure 3 Edwin I. Hatch Nuclear Plant Request to Revise Technical Specifications Linit 1 DG Shutdown Requ. irements Page Change Instructions Remove Pagg Insert Pagg 3.9-6a 3.9-6a l

I 004648 E3-1 9409250194 940816 PDR ADOCK 05000321 p PDR

LIMITING CONDITIONS FOR OPERATION SURVEILt#4CE REQUIREMENTS C. Diesel Generator Reauirem nts (Reactor in the Shutdown or Refuel Wxie)

(Continued)

1. Work is being done which has the potential for draining the reactor pressure vessel, or i

2. Secondary containment is required, or

3. A core or containment cooling sys-tem is required.* l D. Electric Power Monitorino for the 4.9.D. Electric Power Monitorino for Reactor Protection System Reactor Protection System Specification _n Soecifications:

1. When either of the RPS MG sets or the 1. The Electric Power Monitoring for Alternate Source is in service, its the Reactor Protection System power monitoring system shall be shall be demonstrated operable:

OPERABLE.

(a) At least one per 6 months (a) If the power monitoring system is by perfoming a FUNCTIONAL not OPERABLE and Operability TEST, cannot be restored within 30 minutes of discovery, remove the (b) At least once per operating power supply from service imediately cycle by demonstrating the thereafter. OPERABILITY of under-voltage, over-voltage and under-fre-(b) One channel of a power monitoring quency protective instrumenta-system may be inoperable, as tion by perfomance of a CHANNEL necessary for test or maintenance, CAllBRATION including simu-not to exceed 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> per month. lated automatic actuation of the protective relays, trip-ping logic and output cir-cuit breakers and verifying the following setpoints:

(1) Over-voltage 5132 VAC, with time delay relay set to 4 seconds maximum, (2) Under-voltage 2108 VAC, with time delay relay set to 4 seconds maximum, (3) Under-frequency 157 Hz, with time delay relay set to 4 seconds maximum.

• For the Fall 1994 Unit I refueling / maintenance outage, two diesels must be operable per Specifi-cation 3.9.C. However, Specification 3.9.C.3 is not applicable when local leak rate testing is being perfomed on the Residual Heat Removal System loops and diesel generator lA is rc4noved from service for maintenance, provided the fuel pool gates are removed and the cavity is flooded.

During this time, one of the two required diesels must be aligned to its corresponding core or containment cooling system.

HATCH - UNIT 1 3.9-6a K:\wp\techsp\h\94-ll. pro

+

9 LIMfTIMi CtM)ITIMS FGt GPERATIM _ SIRVFILLANCE REOUlidiiNTS

. C. Djesel Generator Raouimmants (Reactor 4.9.D. Electric Power Monitorino for

+ in the Shutdown or Refuel Mode) Reactor Pmtection System (Continued) ,

1. Wort is being done dich has the Soecifications:

potential for draining the reactor pressure vessel, or 1. The Electric Power Monitoring for the Reactor Pmtection Systa

2. Secondary containment is required, shall be demonstrated operable: i or f'

s (a) At least one per 6 months

3. A core or containment cooling sys- by performing a FWCTIONAL tem is required.@ TEST, D. Electric Power Monitorino for the (b) At least once per operating Reactor Protection Systen cycle by demonstrating the OPDIABILITY of under-voltage, over-valtage and under-fre-( - Soecifications: quency protective instruenta-tion by perfomance of a CHAPNEL i

1. When either of the RPS Mi sets or the CAllBRATION including sisu-Alternate Source is in service, its lated automatic actuation of power monitoring system shall be the protective relays, trip-OPERABLE. ping logic and output cir-cuit brsakers and verifying (a) If the power monitoring system is the following setpoints:  !

not OPERABLE and Operability ,

. cannot be restored within 30 (1) Over-voltage 1132 VAC, with .

minutes of discove y, rvmove the time delay relay set to power s'.; ply from service immediately 4 seconds maxiana, thereafier. '

(2) Under-voltage 1108 VAC, (b) One channel of a power monitoring with time delay relay set to 4 seconds maximum, i system may be inoperable, as l

(

i necessary for test or maintenance, not to exceed 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> per month. (3) Under-frequency 157 Hz, .

I with time delay relay set to 4 seconds maxiana. l  :

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