Text

Amends 74 & 73 to Licenses DPR-80 & DPR-82,respectively, to Increase Quantity of Emergency Diesel Generator Stored Fuel Oil for Operating Modes 1 Through 6
	ML20114A939
Person / Time
Site:	Diablo Canyon
Issue date:	08/12/1992
From:	Quay T; Office of Nuclear Reactor Regulation
To:	;
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ML20114A940	List: ML20114A939; ML20114A943;
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	NUDOCS 9208240136
	Download: ML20114A939 (11)
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UNITED STATES l8[

7 NUCLEAR REGULATORY COMMISSION w AsmsoToN, D. C. 20655 A,

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PACIFIC GAS AND ELECTRIC COMPANY DOCKET NO. 50-275 DIABLO CANYON NUCLEAR POWER PLANT. UNIT NO 1-AMENDMENT TO FACILITY OPERATING LICENSE Amendment No. 74 License No..DPR-80.

1.

The Nuclear Regulatory Commission-(the Commission) has found that:

A.

~ The application for amendment by Pacific Gas & Electric Company

.(the' lice.nsee)-dated February 14, 1992, as supplemented by letter dated Jane-5, 1992,-complies with the; standards and requirements

-of the Atomic Energy: Act of 1954, as amended (the Act), and' the Commission's regulations' set forth in 10 CFR Chapter I; B.

The ~ facility' will-operate in ' conformity with the application, the

provisions of the Act, and the rules and regulations of the Commission;

-C.

There is reasonable. assurance (i) that-the activities authorized by th_is: amendment can be conducted without endangering the health and: safety ofz the-public, and (ii) that such activities will be conducted in compliance with the Commission's regulations; D;

The issuance of 'this amendment will.not be inimical to the common defense-and security or to the health and-safety of the. public; and-E.

The issuance of this amendment is in accordance with:10 CFR Part 51 of the Commission's regulations and all-applicable requirements

-have'been satisfied.

2.

- Accordingly, the' license-is amended by changes to the Technical Specifications as indicated in the attachment to this license amendment,.

and, paragraph:2 C.(2) of Facility Operating License No. DPR-80 is'hereby-amended-to read as follows:

- 9208240136 920812

.PDR 'ADOCK 05000275

P-PDR ;

... = -.

2_

(2)

Technical Specifications The Technical Specifications contained in Appendix A and the Environmental Protection Plan contained in Appendix B, as revised through Amendment No. 74, are hereby incorporated in the license.. Pacific Gas & Electric Company shall operate the facility in accordance with the Technical Specifications and the Environmental Protection Plan, except where otherwise stated in specific license conditions.

3.

This license amendment is effective as of the date of its issuance.

FOR THE NUCLEAR REGULATORY COMMISSION W)

Theodore R. Quay, Director Project' Directorate V Division of Reactor Projects Ill/IV/V Office of Nuclear Reactor Regulation

Attachment:

Changes-to the Technical Specifications Date of Issuance:

August 12, 1992 L

d UNITED STATES

! ",,. r 'i NUCLEAR REGULATORY COMMISSION f

WASHINCTON, D. C. 20555 k.,

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PACIfl0 GAS AND ELECTRIC COMPANY DOCKET NO. 50-323 DIABLO Cf.NYON NUCLEAR POWER PLANT. UWIT NO. 2 AMENDMENT TO FACILITY OPERATING LICENSE Amendment No. 73 License No. OPR-82 1.

The Nuclear Regulatory Commission (the Commission) has hund that:

A.

The application for amendment by Pacific Gas & Electric Company (the licensee) dated February 14, 1992, as supplemented by letter dated kne 5, 1992, complies with the standards and requirements of the Atomic Energy Act. of 1954, as amended (the Act), and the Commission's regulations set forth in 10 CFR Chapter I; B.

The facilit, will operate in conformity with the application, the provisions of the Act, and the rules and regulations of the Commission; C.

There is reasonable assurance (i) that the activities authorized by this amendment can be. conducted without. endangering the health and safaty of the public, and (ii) that such activities will be conducted in compliance with the Commission's regulations; D.

The issuance of this amendment will not be inimical to the common defense and security or to the health and safety of the public; and E.

The issuance of this amendment is in accordance with 10 CFR Part 51 of the Commission's regulations and-all applicable requirements have been satisfied.

2.

Accordingly, the license is amended by changes to the Technical Specifications as indicated in the attachment to this license amendment, and paragraph 2.C.(2) of Facility Operating License No. DPR-82 is hereby amenjed to read as follons:

. (2)

Technical' Specifications The Technical Specifications contained in Appendix A and the Environmental Protection Plan coritained in Appendix B, as revised through Amendment No.

73, are hereby incorporated in the license.

Pacific 6as & Electric Company shall operate the facility in accordance with the Technical Specifications and-the Environmental Protection Plan, except where othenvise stated in specific license conditions.

3.

This license amendment is effective as of the date of its issu;nce.

FOR THE NUCLEAR REGULATORY COMMISSION edM M

'W

'heodore R. Quay, Director T

Project Directorate V Division of Reactor Projects III/IV/V Office of Naclear Reactor Regulation

Attachment:

Changes to the Technical

' Specifications Date of Issuance:

August 12, 1992

1 l

i ATTACHMENT TO LICENSE AMENDMENTS AMENDMENT NO. 74 TO FACILITY OPERATING LICENSE NO. DPR-80 AND AMENDMENT NO. 73 TO FACILITY.0PERATING LICENSE NO. DPR-82 DOCKET NOS. 50-275 AND 50-323 Revise Appendix A Technical Specifications by removing the pages identified below and inserting the enclosed pages. The revised pages are identified by the captioned amendment number and contain marginal lines indicating the area of change. Overleaf pages are also included, as appropriate.

REMOVE INSERT 3/4 8-1 3/4 8-1 3/4 8-11 3/4 8-11 B 3/4 8-3 B 3/4 8-3 B 3/4 8-3a l

L

3/4.8 ELECTRICAL POWER SYSTEMS 3/4.8.1 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:

Two independent circuits (one with delayed access) between the a.

offsite transmission network and the Onsite Class 1E Distribution System, and b.

Three separate and independent diesel generators,* each with:

1.

A separate engine-mounted fuel tank containing a minimum volume of 200 gallons of fuel, and 2.

Two supply trains of the Diesel Fuel Oil Storage and Transfer System containing a minimum combined storage of 33,000 gallons of fuel for one unit operation ** and 65,000 gallons of fuel for two unit operation.

APPLICABILITY:

MODES 1, 2, 3, and 4.

ACTION:

With one offsite circuit of the above required A.C, electrical power a.

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

sources by performing Specification 4.8.1.1.la. within I hour and at least once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereaf ter.

If each of the diesel generators have not been successfully tested within the past 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months demonstrate its OPERABILITY by performing Specification 4.8.1.1.2a.2) separately for-each such diesel generator within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

Restore the 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 STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

b.

With a diesel generator of the above required A.C. electrical power sources inoperable, demonstrate the OPERABILITY of the A.C, offsite sources by performing Specification 4.8.1.1.la 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 if the diesel generator became inoperable due to any cause other than preventive maintenance or

For a five diesel generator configuration, OPERABILITY of the third (common) diesel generator shall include the capability of functioning as a power source for the requircd unit upon automatic demand from that unit.

- The performance of Technical Specification Surveillance Requirement 4.8.1.1.3.e requires one fuel oil storage tank to be removed from service to be drained and cleaned.

During this-surveillance, the diesel generator fuel oil. storage requirement for one unit operation in Modes 1 through 4 and one unit operation in Mode 6 with at least 23 feet of water above the reactor vessel flange or with the reactor vessel defueled is 35,000 gallons.

The tank being cleaned may be inoperable for up to 10 days.

For the duration of tank cleaning, temporary onsite fuel oil storage of 24,000 gallons will be maintained.

Prior to removal of a tank from service, the offsite circuits required by Technical Specification 3.8.1.1.a will be verified to be OPERABLE.

DIABLO CANYON - UNITS 1 & 2 3/4 8-1 Amendment Nos. # & O, 74 & 73

4 ELECTRICAL POWER SYSTEMS LIMITING CONDITION FOR OPERATION ACTION (Continued) testing, demonstrate the OPERABILITY of the remaining OPERABLE diesel generators by performing Specification 4.8.1.1.2a.2) within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months *;

restore the diesel generator to OPERABLE status within 7 days ** or be I

in at least HDT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTOOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

c.

With one offsite circuit and one diesel generator of the above required A.C. electrical power sources inoperable, demonstrate the OPERABILITY of the remaining A.C. sources by performing Specifica-tion 4.8.1.1.la. within I hour and at least once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months there-after; and if the diesel generator became inoperable due to any cause other than preventive maintenance or ttsting, demonstrate the OPER-ABILITY of the remaining OPERABLE diesel generators by performing Specification 4.8.1.1.2a.2) within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months ; restore at least one of the inoperable sources to OPERABLE status within 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

Restore the other A.C. power source (offsite circuit or diesel generator) to OPERABLE status in accordance with ACTION a. or b., as appropriate with the time rec,uirement of that ACTION statement based on the time of initial loss of the remaining inoperable A.C. power source.

A successful test of diesel OPERABILITY per Specification 4.8.1.1.2a.2) performed under this ACTION statement for OPERABLE diesels or a restored to OPERABLE diesel satisfies the diesel generator test requirement of ACTION a. or b.

d.

With one diesel generator inoperable in addition to ACTION b. or c.

above verify that:

1.

All required systems,- subsystems, trains, components and cesices that depend on the remaining OPEPABLE diesel generators as a source of emergency power are also OPERABLE, and 2.

When in MODE 1, 2, or 3 that at least two auxiliary feedwater pumps are OPERABLE.

If these conditions are not satisfied within 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months be in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUT 00WN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

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

- For a five diesel generator configuration, the inoperable diesel generator shall be returned to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months .

However, once per calendar year,-the third (common) diesel generator may be inoperable for up to 7 days for preplanned preventive maintenance and testing provided one unit is in Mode 5 or 6 and the other four diesel generators are OPERABLE.

Surveillance Requirements 4.8.1.1.la and 4.8.1.1.2a.4 shall be performed within 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months prior to removal of Diesel Generator 3 from service.

During the 7 day period the remaining four diesel generators shall be verified OPERABLE at least once-per 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months (in addition to any testing required by 1

Table 4.8-1).

In the event these conditions are not met, the unit in Mode 1, 1

2, 3, or 4 will be placed in HOT SHUTOOWN within 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and COLD SHUTDOWN within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

The provisions of Technical Specification 3.0.4 do not apply.

I DIABLO CANYON - UNITS 1 & 2 3/4 8-2 Amendment Nos.44 and 43

i ELECTRICAL POWER SYSTEMS A.C. SOURCES SNUTDOWN LIMITING CONDITION FOR OPERATION 3.8.1.2 As a minimum,'the following A.C. electrical power sources shall be OPERABLE:

a.

'One circuit between the offsite transmission network and the Onsite Class IE Distribution _ System, and b.

One diesel generator with:

1.

An engine-mounted fuel tank containing a minimum volume of 200 gallons of fuel, 2.

One supply train of-the Diesel Fuel Oil Storage and Transfer system containing a minimum storage of 26,000 gallons

of fuel l

in addition to the fuel required for the other unit.

APPLICABILITY: MODES 5 and 6.

ACTION:

With less than the above minimum required A.C. electrical power sources OPERABLE, immediately suspend all operations involving CORE ALTERATIONS, positive reactivity changes, movement of irradiated fuel or crane operations with loads over the fuel storage pool.

In addition, when in MODE 5 with the reactor coolant loops not filled, or in MODE 6 with the water level less than 23 feet above the reactor vessel flange, immediately initiate corrective action to restore the required sources to OPERABLE status as soon as possible.

SURVEILLANCE REQUIREMENTS 4.8.1.2 The above required A.C. electrical power sources shall be demonstrated OPERABLE by the performance of each of the requirements of Specifications 4.8.1.1.1, 4.8.1.1.2, 4.8.1.1.3, and 4.8.1.1.4, except for Specifications 4.8.1.1.1.b.2) and 4.8.1.1.2.a.2)c), b.2) for ESF timers, b.6), b.7), b.10), and b.11).

~*The performance of Technical Specification Surveillance Requirament 4.8.1.1.3.e requires one fuel oil storage tank to be removed from service to be drained and

cleaned.

During this surveillance, the diesel generator fuel oil storage requirement for one unit operation in Modes 5 or 6 and one unit operation in Mode 6 with at least 23 feet of water above the reactor vessel flange or with the reactor vessel defueled_is 35,000 gdlons.

The tank bef g cleaned i

may be inoperable for up to 20 days.

For the duration of tank cleaning, I

temporary onsite fuel oil str age of 24,000 galloris will be maintained.

Prior to removal of a tank from service, the offsite circuits required by Technical Specification 3.8.1.1.a will be verified to be OPERABLE.

DIABLO CANYON - UNITS 1 & 2 3/4 8-11 Amendment Nos. 74 & 73

ELECTRICAL POWER SYSTEMS 3/4.8.2 ONSITE POWER DISTRIBUTION OPERATING LIMITING CONDITION FOR OPERATION

3. B. 2.1 The following electrical busses shall be energized in the specified manner:

a.

4160 volt Vital Bus F, b.

480 volt Vital Bus F, c.

4160 volt Vital Bus G, d.

4B0 volt Vital Bus G, e.

4160 volt Vital Bus H, f.

480 volt Vital Bus li, g.

120 volt Vital Insttument A.C. Bus 1 energized from its associated inverter' connected to D.C. Bus l',

h.

120voltSuppigmentalVitalInstrumentA.C.BusIAenergizedfrom its associated inverter connected'to D.C. Bus 1*,

i.

120 volt Vital Instrument A.C. Bus 2 energized from its associated inverter connected to D.C. Bus 2*,

j.

120 volt Vital Instrument A.C. Bus 3 energized from its associated inverter connected to D.C. Bus 3*,

k.

120 volt Supplemental Vital Instrument A.C. Bus 3A energized from its associated inverter connected to D.C. Bus 3*,

1, 120 volt Vital Instrument A.C. Bus 4 energized from its associated inverter connected to D.C. Bus 2*,

125 volt D.C. Bus 1 energized from Battery Bank 1, and its associated m.

full-capacity charger, n.

125 volt D.C. Bus 2 energized from Battery Bank 2, and its associated full-capacity charger, and 125 volt D.C. Bus 3 energized from Battery Bank 3, and its associated o.

fu'l-capacity charger.

APPLICABILITY:

MODES 1, 2, 3, and 4.

ACTION:

With one of the required 4160 volt and/or associated 480 volt vital a.

busses not energized, re-energize them within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHlTTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

b.

With one vital instrument A.C. bus not energized from its associated inverter, or with one inverter not connected to its associated D.C.

'Two vital instrument A.C. inverters or one vital and one supplemental vital instrument A.C. inverter.may be disconnected from their D.C. busses for up to 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months for the purpose of performing an equalizing charge on their associated battery bank provided:

(1) their vital bussee are energized, and (2) the vital busses associated with the other battery banks are energized from their associated inverters and connected to their associated 0.C. busses.

l DIABLO CANYON - UNITS 1 & 2 3/4 6-12 Amendment Nos. 6 and 4 l

FLECTRICAL POWER SYSTEMS BASES A.C. Sources, D.C. Sources, and ONSITE POWER DISTRIBUTION (Continued) will Nt be more than 0.040 below the manufacturer's full charge specific gravity and that the overall capability of the battery will be maintained within an acceptable limit; and (4) the allowable value for an individual cell's float voltage, greater than 2.07 volts, ensures the battery's capa-bility to perform its design function.

The OPERABILITY of the A.C. electrical power sources requires maintaining a supply of fuel oil to support the operation of the emergency diesel generators.

The stored fuel oil supports the function of the A.C. power sources to provide

.nower for the operation of emergency systems and engineered safety features (ESF) during and following the shutdown of the reactor in the event that offsite power sources are not available.

The specified fuel oil quantity is based on the calculated fuel oil consumption necessary to support the operation of the emergency power source to power the minimum required ESF systems.

Operation of minimum ESF systems is required to mitigate a design basis accident (LOCA) in one unit and those minimum required systems for a concurrent non-LOCA safe shutdown in the remaining unit (both units initially in Mode 1 operation).

The fuel oil consumption is calculated for a period of 7 f. ys operation of minimum ESF systems.

This requirement provides a sufficient operating period within which offsite power can be restored and/or additional fuel can be delivered to the site.

l l

The Surveillan:e Requirements applicable to diesel generator fuei oil storage requires cleaning the fuel oil storage tanks on a 10 year frequency.

Conducting this surveillance requires the tank to be taken out of service.

For this infrequent event, the inventory in the remaining tank is sufficient to support operation of the emergency diesel-generator to power the minimum i

required loads to maintain safe conditicns for a time period of 4 days, l

considering one unit in Mode 1-through 6 operation and one unit in Mode 6 operation with.at_least 23 feet of water above the reactor vessel flange or with the reactor defueled.

3/4.8.4 ELECTRICAL EQUIPMENT PROTECTIVE DEVICE _5 The OPERABILITY of the motor operated valves thermal overload protection and bypass devices ensures that these devices will not prevent safety related valves from performing their function.

The Surveillance Requirements for demonstrating the OPERABILITY of these devices are in accordance with Regulatory Guide-1.106, " Thermal Overload Protection for Electric Motors on Motor Operated Valves," Revision 1, March 1977.

Containment electrical penetrctions and penetration conductors are pro-tected by either deenergizing circuits not required during reactor operation or by demonstrating the OPERABILITY of primary and backup overcurrent protec-tion circuit breakers during periodic surveillance.

DIABLO CANYON - UNITS 1 & 2 B 3/4 8-3 Amendment Nos.19 & IB, 74 & 73

4 ELECTRICAL POWER SYSTEMS BASES ELECTRICAL EQUIPMENT PROTECTIVE DE'v1CES (Continued)

The Surveillance Requirements applicable to lower voltage circuit breakers provide assurance of breeker reliability by testing at least one representative sample of ea:h n.anufacturer's erand of circuit b eaker.

Each manufacturer's molded case and raetal case circuit breakers art grouped into representative samples which are then tested on a rotating basis to ensure that gli breakers are tested.

If a wide variety exists within any manufacturer's br6hd of circuit breakers, it ic necessary to divide that manufacturer's breakers into groups and treat each group cs a separate type of breaker fer su veillance purposes.

A list of containment penetration conductor overcurrent protective devices, with information on location and size ana equipment powered oy the protected circuit, is maintained and controlled at the plant site.

The list is limited to those overcurrent devices ' ;talled for the purpose of keeping circuit fault current below the penetration rating.

It does not apply to other overcurrent devices associated with containment penetrations.

Tne aedition or deletion of any containment penetration conductor overcurrent protective device is governed by Section 50.59 of 10 CFR Part 50.

4 4

DIABLO CANYON - UNITS 1 & 2 B 3/4 8-3a Amendment Nos.19 L Z8, 74 & 73 i

l

ML20114A939

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