Text

Proposed re-typed TSs for License Change Requests 94-08, 94-11 & 94-12
	ML20086G955
Person / Time
Site:	Hope Creek
Issue date:	07/10/1995
From:	; Public Service Enterprise Group
To:	;
Shared Package
ML20086G953	List: ML20086G950; ML20086G955;
References
	NUDOCS 9507170323
	Download: ML20086G955 (10)
	v • d • e

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i i

3/4.7 PLkNT SYSTEMS 3/4.7.1 SERVICE WATER SYSTEMS SAFETY AUXILIARIES COOLING SYSTEM

)

LIMITING CONDITION FOR OPERATION 3.7.1.1 At least the following independent safety auxiliaries cooling system l

-(SACS) subsystems, with each subsystem comprised of a.

Two OPERABLE SACS pumps, and b.

An OPERABLE flow path consisting of a closed loop through the SACS heat exchangers and SACS pumps and to associated safety related equipment shall be OPERABLE:

a.

In OPERATIONAL CONDITION 1, 2 and 3, two subsystems.

b.

In OPERATIONAL CONDITION 4, 5,

and ** the subsystems associated with systems and components required OPERABLE by Specification 3.4.9.2, 3.5.2, 3.8.1.2, 3.9.11.1 and 3.9.11.2.

l APPLICABILITY: OPERATIONAL CONDITIONS 1, 2, 3, 4, 5, and **.

l ACTION:

a.

In OPERATIONAL CONDITION 1, 2, or 3:

1. a.

With one SACS pump inoperable, restore the inoperable pump to OPERABLE status within 30 days or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .***

If the condition specified by *** can not be met, be in at least HOT SHUTDOWN within the next 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

b.

With one SACS heat exchanger inoperable, restore the heat exchanger to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months or be in at least HOT SHUTDOWN with the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

2.

With one SACS subsystem otherwise inoperable, realign at least l

one of the affected diesel generators to the OPERABLE SACS subsystem within 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months , and restore the inoperable subsystem to OPERABLE status with at.laast one OPERABLE pump and heat exchanger'within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .***

l

- When handling irradiated fuel in the secondary containment.

- - Two diesel generators and two service water pumps associated with the unaffected SACS loop must be OPERABLE.

HOPE CREEK 3/4 7-1 Amendment No.

9507170323 950710 PDR ADOCK 05000354 8.

~ fi@t.-

I CANT SYSTEMS i -ITING CONDITION FOR OPERATION (Continued)

AC11QH (Continued)

3. a.

With one SACS pump in each subsystem inoperable, restore at least one inoperable pump to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .***

b.

With one SACS heat exchanger in each subsystem inoperable, immediately initiate measures to place the unit in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

4.

With both SACS subsystems otherwise inoperable, immediately initiate measures to place the unit in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in COLD SHUTDOWN

in the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

b.

In OPERATIONAL CONDITION 3 or 4 with the SACS subsystem, which is associated with an RHR loop required OPERABLE by Specification 3.4.9.1 or 3.4.9.2, having two SACS pumps or one heat exchanger inoperable, declare the associated RHR loop inoperable and take the ACTION required by Specification 3.4.9.1 or 3.4.9.2, as applicable.

$^

a l

i L

Whenever both SACS subsystems are inoperable, if unable to attain COLD j.

SHUTDOWN as required by this ACTION, maintain reactor coolant temperature as low as practical by use of alternate heat removal methods.

i

- - Two diesel generators and service water pumps associated with the required OPERABLE SACS pumps must be OPERABLE.

HOPE CREEK 3/4 7-la Amendment No.

l THIS PAGE INTENTIONALLY LEFT BLANK.

HOPE CREEK 3/4 7-Ib Amendment No.

~.

I l

PLANT SYSTEH1 LIMITING CONDITION FOR OPERATION (Continued) s ACTION:

(continued) c.

In OPERATIONAL CONDITION 4 or 5 with the SACS subsystem, which is associated with safety related equipment required OPERABLE by Specification 3.5.2, having two SACS pumps or one heat exchanger inoperable, declare the associated safety related equipment inoperable and take the ACTION required by Specification 3.5.2.

d.

In OPERATIONAL CONDITION 5 with the SACS subsystem, which is associated with an RHR loop required OPERABLE by Specification

)

3.9.11.1 or 3.9.11.2, having two SACS pumps or one heat exchanger inoperable, declare the associated RHR system inoperable and take the ACTION required by Specification 3.9.11.1 or 3.9.11.2, as applicable.

e.

In OPERATIONAL CONDITION 4, 5, or **, with one SACS subsystem, which is associated with safety related equipment required OPERABLE by Specification 3.8.1.2, inoperable, realign the associated diesel generators within 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months to the OPERABLE SACS subsystem, or declare the associated diesel generators inoperable and take the ACTION required by Specification 3.8.1.2. The provisions of Specification 3.0.3 are not applicable.

f.

In OPERATIONAL CONDITION 4, 5, or **, with only one SACS pump and heat exchanger and its associated flowpath OPERABLE, restore at least two pumps and two heat exchangers and associated flowpaths to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months or, declare the associated safety related equipment inoperable and take the associated ACTION requirements.

SURVEILLANCE REQUIREMENTS

...-=........................===.......========..............................

4.7.1.1 At least the above required safety auxiliaries cooling system subsystems shall be demonstrated OPERABLE:

a.

At least once per 31 days by verifying that each valve in the flow path that is not locked, sealed or otherwise secured in position, is in its correct position.

1 b.

At least once per 18 months during shutdown by verifying that: 1)

Each automatic valve servicing safety-related equipment actuates to its correct position on the appropriate test signal (s), and 2)

Each pump starts automatically when its associated diesel generator automatically starts.

HOPE CREEK 3/4 7-2 Amendment No.

I PLANT SISTEMS STATION SERVICE WATER SYSTEM LIMITING CONDITION FOR OPERATION ammmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmamasseammmmmmmmmmmmmmmmmmmmmmmmma 3.7.1.2 At least the following independent station service water system loops, with each loop comprised of:

a.

Two OPERABLE station service water pumps, and b.

An OPERABLE flow path capable of taking suction from the Delaware River (ultimate heat sink) and transferring the water to the SACS heat exchangers, shall be OPERABLE:

a.

In OPERATIONAL CONDITION 1, 2 and 3, two loops.

b.

In OPERATIONAL CONDITION 4, 5 and *, one loop.

i APPLICABILITY: OPERATIONAL CONDITIONS 1, 2, 3, 4, 5 and *.

ACTION:

)

a.

In OPERATIONAL CONDITION 1, 2, or 3:

1.

With one station service water pump in: operable, restore the inoperable pump to OPERABLE status within 30 days or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .**

If the condition specified by ** can not be met, be in at least HOT SHUTDOWN within the next 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

2.

With one station service water pump in each loop inoperable, restore at least one inoperable pump to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .***

l 3.

With one station service water system loop otherwise inoperable, restore the inoperable station service water system loop to OPERABLE status with at least one OPERABLE pump within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .**

When handling irradiated fuel in the secondary containment.

- Two diesel generators and two SACS pumps associated with the unaffected service water loop must be OPERABLE.

- - Two diesel generators and SACS pumps associated with the required OPERABLE service water pumps must be OPERABLE.

HOPE CREEK 3/4 7-3 Amendment No.

9 8

A PLANT SISTEMS LIMITING CONDITION FOR OPERATION (Continued)

ACTION:

(Continued) b.

In OPERATIONAL CONDITION 4 or 5:

With only one station service water pump and its associated flowpath OPERABLE, restore at least two pumps with at least one flow path to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months or declare the associated SACS subsystem inoperable and take the ACTION required by Specification 3.7.1.1.

c.

In OPERATIONAL CONDITION *:

With only one station service water pump and its associated flowpath OPERABLE, restore at least two pumps with at least one flow path to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months or declare the associated SACS subsystem inoperable and take the ACTION required by specification 3.7.1.1. The provisions of Specification 3.0.3 are not applicable.

SURVEILLANCE REQUIREMENTS 4.7.1.2 At least the above required station service water system loops shall be demonstrated OPERABLE:

At least once per 31 days by verifying that each valve (manual, a.

power operated or automatic), servicing safety related equipment that is not locked, sealed or otherwise secured in position, is in its correct position.

b.

At least once per 18 months during shutdown, by verifying that:

1.

Each automatic valve servicing non-safety related equipment actuates to its isolation position on an isolation test signal.

2.

Each pump starts automatically when its associated diesel generator automatically starts.

When handling irradiated fuel in the secondary containment.

l HOPE CREEK 3/4 7-4 Amendment No.

1

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I 3/4.8 EiECTRICAL POWER SYSTEMS 3/4.8.1 A.C.

SOURCES A.C.

SOURCES - OPERATING LIMITING CONDITION FOR OPERATION 3.8.1.1 As a minimum, the following A.C. electrical power sources shall be OPERABLE:

a.

Two physically independent circuits between the offsite transmission network and the onsite Class 1E distribution system, and b.

Four separate and independent diesel generators, each with:

1.

A separate fuel oil day tank containing a minimum of 200 gallons of fuel, 2.

A separate fuel storage system consisting of two storage tanks containing a minimum of 48,800 gallons of fuel **, and 3.

A separate fuel transfer pump for each storage tank.

APPLICABILITY: OPERATIONAL CONDITIONS 1, 2, and 3.

ACTION:

a.

With one offsite circu't of the above required A.C. electrical power i

sources inoperable, demonstrate the OPERABILITY of the remaining A.C.

sources by performing Surveillance Requirement 4.8.1.1.1.a within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months and at least once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter. Restore the inoperable offsite circuit to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

i b.

With one diesel generator of the above required A.C. electrical power sources inoperable, demonstrate the OPERABILITY of the above required A.C. offsite sources by performing Surveillance Requirement 4.8.1.1.1.a within I hour and at least once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter.

If the diesel generator became inoperable due to any cause other than an inoperable support system, an independently testabl% component, or preplanned preventive maintenance or testing, demonstrate the OPERABILITY of the remaining diesel generators by performing Surveillance Requirement 4.8.1.1.2.a.4 and 4.8.1.1.2.a.5 separately for each diesel generator within 16 hours1.851852e-4 days 0.00444 hours 2.645503e-5 weeks 6.088e-6 months

unless the absence of any i

potential common mode failure for the remaining diesel generators is demonstrated. Restore the inoperable diesel generator to OPERABLE l

status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months for diesel generators A or B, or within 14 days for diesel generators C or D, or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

This test is required to be completed regardless of when the inoperable diesel generator is restored to OPERABILITY.

- With the fuel storage system of one or more diesel generators containing less than 48,800 gallons of fuel, but greater than 44,709 gallons, the associated diesel generator is considered operable for up to 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months to allow for fuel replenishment 4

i HOPE CREEK 3/4 8-1 Amendment No.

l

i i

5 ELECTRICAL POWER SYSTEMS j

LIMITING CONDITION FOR OPERATION (Continued)

==================================================================

ACTION: (Continued) 1 c.

With one offsite circuit of the above required A.C.

sources and one l

diesel generator of the above required A.C.

electrical power sources inoperable, demonstrate the OPERABILITY of the remaining A.C. sources by performing Surveillance Requirement 4.8.1.1.1.a within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months and at least once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter. If a diesel generator became inoperable due to any causes other than an inoperable support system,

)

an independently testable component, or preplanned preventive

~,

maintenance or testing, demonstrate the OPERABILITY of the remaining OPERABLE diesel generators separately for each diesel generator by 4

performing Surveillance Requirement 4.8.1.1.2.a.4 and 4.8.1.1.2.a.5 within 16 hours1.851852e-4 days 0.00444 hours 2.645503e-5 weeks 6.088e-6 months unless the absence of any potential common mode failure for the remaining diesel generators is demonstrated *.

Restore at least two offsite circuits and all four of the above required diesel generators to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months from a

time of the initial loss or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months . A successful test (s) of diesel generator OPERABILITY per Surveillance Requirement 4.8.1.1.2.a.4 and 4.8.1.1.2.a.5 performed under this ACTION statement for the OPERABLE diesel generators satisfies the diesel generator test requirements of ACTION Statement b.

d.

With both of the above required offsite circuits inoperable, restore at least one of the above required offsite circuits to OPERABLE status within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months . With only one offsite circuit restored to OPERABLE status, restore at least two offsite circuits to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months from time of initial loss or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

A successful test (s) of diesel generator OPERABILITY per Surveillance Requirement 4.8.1.1.2.a.4 and 4.8.1.1.2.a.5 performed under this ACTION statement for the OPERABLE diesel generators satisfies the diesel generator test requirements of ACTION statement a.

e.

With two diesel generators of the above required A.C. electrical power sources inoperable, demonstrate the OPERABILITY of the above required A.C. offsite sources by performing Surveillance Requirement 4.8.1.1.1.a within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months and at least once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter and demonstrate the OPERABILITY of the remaining diesel generators by performing Surveillance Requirement 4.8.1.1.2.a.4 and 4.8.1.1.2.a.5 separately for each diesel generator within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months .* Restore at least one of the inoperable diesel generators to OPERABLE status within 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months or be in at least HOT SHUTDOWN within tne next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

This test is required to be completed regardless of when the inoperable diesel generator is restored, to OPERABILITY.

l HOPE CREEK 3/4 8-2 Amendment No.

ELECTRICAL POWER SYSTEMS 1

LINITING CONDITION FOR OPERATION (Continued) j ACTION: (Continued) g A successful test (s) of diesel generator OPERABILITY per Surveillance Requirement 4.8.1.1.2.a.4 and 4.8.1.1.2.a.5 performed under this ACTION statement for the OPERABLE diesel generators satisfies the diesel generator test requirements of ACTION Statements a and b.

f.

With two diesel generators of the above required A.C. electrical power sources inoperable, in addition to ACTION e.,

above, verify within 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months that all required systems, subsystems, trains, components, and devices that depend on the remaining diesel generators as a source of emergency power are also OPERABLE; otherwise, be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in COLD SHUTDOWN within the i

following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

g.

With one offsite circuit and two diesel generators of the above I

required A.C. electrical power sources inoperable, demonstrate the i

OPERABILITY of the remaining A.C.

sources by performing Surveillance Requirement 4.8.1.1.1.a within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months and at least once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter and demonstrate the OPERABILITY of the remaining diesel generators by performing Surveillance Requirements 4.8.1.1.2.a.4 and 4

4.8.1.1.2.a.5 separately for each diesel generator within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months .*

Restore at least one of the above required inoperable A.C.

sources to OPERABLE status within 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

Restore the inoperable offsite circuit and both of the inoperable diesel generators to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months from time of initial loss or be in at least HOT SHUTDOWN within 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

h.

With the buried fuel oil transfer piping's cathodic protection system inoperable for more than 30 days, prepare and submit a Special Report to the Commission pursuant to Specification 6.9.2 within the next 10 days outlining the cause of the malfunction and the plans for restoring the system to OPERABLE status.

s J

This test is required to be completed regardless of when the inoperable diesel generator is restored to OPERABILITY.

l HOPE CREEK 3/4 8-3 Amendment No.

~..

~

. ~ -

4' 4

\\

7 1

~

'3/4.8 ELECTRICAL POWER SYSTEMS BASES.

i. _

====...........................................................................

j;

' 3/4.8.17 3/4.8.2 and 3/4.8.3 A.C.' SOURCES.

D.C.

SOURCES and ONSITE POWER DISTRIBUTION SYSTEMS c

e

?

The OPERABILITY of the A.C.

and D.C. power sources and associated distribution systems during operation ensures that sufficient power will be available to supply the safety related equipment required for (1) the safe-shutdown ~of the facility and (2) the mitigation and control of accident conditions within the facility. The minimum specified independent and redundant A.C. and D.C.' power sources and distribution systems satisfy the requirements of General Design Criteria 17 of Appendix "A" to 10 CFR 50.

1 The ACTION requirements specified for the levels of degradation of the power sources provide restriction upon continued facility operation

. commensurate with the level of degradation. The OPERABILITY of the power 2

- sources are consistent with the initial condition assumptions of the safety

]

analyses and are based upon maintaining at least one of the onsite A.C. and the 1

corresponding D.C. power sources and associated distribution systems OPERABLE 2

during accident conditions coincident with an assumed loss of offsite power and l

l single failure of the other onsite A.C.'or D.C.

source.

The A.C.

and D.C.

source allowable out-of-service times are based on 3

Regulatory Guide 1.93, " Availability of Electrical Power Sources", December.

1974 as modified by plant specific analysis and diesel generator manufacturer cocommendations. When two diesel generators are inoperable, there is an J

additional ACTION requirement to verify that all required systems, subsystems, I

trains, components and devices, that depend on the remaining OPERABLE diesel generators as a source of emercancy power, are also OPERABLE. This requirement 7

is intended to provide assurance that a loss of offsite power event will not l

result in a complete loss of safety function of critical systems during the

[

period two or more of the diesel generators are inoperable. The term verify as j

l used in this context means to administratively check by examining logs or other j

information to determine if certain components are out-of-service for

=

maintenance or other reasons.

It does not mean to perform the surveillance j

j requirements needed to demonstrate the OPERABILITY of the component.

The i

primary intent of the extended AOT is that the extended EDG AOT from 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months j

to 14 days may be needed to perform preplanned EDG maintenance such as teardowns and modifications that would otherwise extend beyond the original 72 j

hour AOT.

t i

The OPERABILITY of the minimum specified A.C. and D.C. power sources and i

I associated distribution systems during shutdown and refueling ensures that (1) the facility can be maintained in the shutdown or refueling condition for extended time periods and (2) sufficient instrumentation and control capability

[

is available for monitoring and maintaining the unit status, i

I The surveillance requirements for demonstrating the OPERABILITY of the diesel generators are in accordance with the recommendations of Regulatory Guide l.9, Selection of Diesel Generator Set Capacity for Standby Power ij

- Supplies", March 10, 1971, Regulatory Guide 1.137 " Fuel-Oil Systems for Standby-Diesel Generators", Revision 1, October 1979 as modified by plant specific analysis and diesel generator manufacturer's recommendations.

l HOPE CREEK.

B 3/4 8-l'

Amendment No.

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ML20086G955

Text

==================================================================

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