Text

Amends 15 & 14 to Licenses DPR-80 & DPR-82,respectively, Revising Tech Spec Requirements for Diesel Generator Surveillance Testing
	ML20236B125
Person / Time
Site:	Diablo Canyon
Issue date:	07/24/1987
From:	Knighton G; Office of Nuclear Reactor Regulation
To:	;
Shared Package
ML20236B129	List: ML20236B125;
References
	TAC-60067, TAC-60068, NUDOCS 8707280353
	Download: ML20236B125 (14)
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UNITED STATES 8

NUCLEAR REGULATORY COMMISSION o

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PACIFIC GAS AND ELECTRIC COMPANY DIABLO CANYON NUCLEAR POWER PLANT, UNIT 1 DOCKET NO. 50-275 AMENDMENT TO FACILITY OPERATING LICENSE Amendment No.15 License No. DPR-80 1.

The Nuclear Regulatory Comission (the Comission) has found that:

A.

The application for amendment by Pacific Gas & Electric Com)any (the licensee), dated December 24, 1985, as supplemented Fe)ruary 3, 1987 complies with the standards and requirements of the Atomic Energy Act of 1954, as amended (the Act), and the Comission's regulations set forth in 10 CFR Chapter 1; B.

The facility will oaerate in conformity with the ap)11 cation, the provisions of t1e Act, and the regulations of tie Comission; C.

There is reasonable assurance (i) that the activities authorized by this amendment can be conducted without endangering the health and safety of the public, and (ii) that such activities will be conducted in compliance with the Comission'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 Comission's regulations and all applicable requirements have been satisfied.

l 8707280353 870724 PDR ADDCK 05000275 P

PDR

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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:

(2) Technical Specifications The Technical Specifications contained in Appendix A and the Environmental Protection Plan contained in Appendix B, as revised through Amendment No. 15, 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 becomes effective at the date of its issuance.

FOR THE NUCLEAR REGULATORY COMMISSION George W Knighton, frector Project Directorate V Division of Reactor Projects - III, IV, V and Special Projects

Attachment:

Changes to the Technical Specifications Date of Issuance:

July 24, 1987 l

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UNITED STATES 8

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PACIFIC GAS AND ELECTRIC COMPANY l

DIABLO CANYON NUCLEAR POWER PLANT, UNIT 2 l

DOCKET NO. 50-323 AMENDMENT TO FACILITY OPERATING LICENSE Amendment No. 14 License No. DPR-82 l

1.

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

A.

The application for amendment by Pacific Gas & Electric Com)any (the licensee), dated December 24, 1985, as supplemented Fearcary 3, 1987 complies with the standards and requirements of the Atomic' Energy Act of 1954, as amended (the Act), and the Consnission's 3

regulations set forth in 10 CFR Chapter I; B.

The facility will o)erate in conformity with the application, the provisions of tie Act, and the regulations of the Commission; C.

There is reasonable assurance (1) that the activities. authorized by this amendment can be conducted without endangering the health and safety 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 4

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.

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Accordingly, the license is amended by changes to the Technical Specifications as indicated in the attachment to this license amendment,andparagraph2.C.(2)ofFacilityOperatingLicense i

No. DPR-82 is hereby amended to read as follows:

(2) Technical Specifications The Technical Specifications contained in Appendix A and the Environmental Protection Plan contained in Appendix B, as revised 4

through Amendment No.

14, are hereby incorporated in the license, j

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 becomes effective at the date of its issuance.-

f FOR THE NUCLEAR REGULATORY COMMISSION George W. Knighton.

rector Project Directorate V Division of Reactor Projects - III, IV, Y and Special Projects

Attachment:

Changes to the Technical Specifications Datt of Issuance:

July 24,1987 l

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July 24, 1987 ATTACHMENT TO LICENSE AMENDMENT N05.15 AND 14 FACII.ITY OPERATING LICENSE N05. DPR-80 AND DPR-82 DOCKET NOS. 50-275 AND 50-323 i

l Replace the following pages of the Appendix "A" Technical Specifications with the attached pages. The revised pages are identified by Amendment number and contain vertical lines indicating the area of change.

Remove Insert 3/4 8-1 3/4 8-1 3/4 8-la 3/4 8-2 3/4 8-2 3/4 8-2a 3/4 8-3 3/4 8-3 3/4 8-4 3/4 8-4 3/4 8-5 3/4 8-5 3/4 8-6 3/4 8-6 l

3/4 8-7 3/4 8-7 l

3/4 8-8 3/4 8-8 ii I

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3/4.8 ELECTRICAL POWER SYSTEMS 3/4.8.1 A.C. SOURCES OPERATING LIMITING CONDITION FOR OPERATION l

3.8.1.1 As a minimum, the following A.C. electrical power sources shall be l

OPERABLE:

a.

Two independent circuits (one with delayed access) between the offsite transmission network and the Onsite Class 1E Distribution j

System, and l

l b.

Three separate and independent diesel generators,* each with:

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l 1.

A separate engine-mounted fuel tank containing a minimum volume i

of 200 gallons of fuel, and 2.

Two supply trains of the Diesel Fuel Oil Storage and Transfer System with a combined storage of 31,023 gallons of fuel for one unit operation and 52,046 gallons of fuel for two unit operation.

APPLICABILITY: MODES 1, 2, 3, and 4.

ACTION:

I a.

With one offsite circuit of the above required A.C. electrical power sources inoperable, demonstrate the OPERABILITY of the remaining A.C.

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.

If each of the diesel generators i

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 perforrning 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 l

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 H0T 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 i

sources. inoperable, demonstrate the OPERABILITY of the A.C. offsite 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 thereafter; and if the diesel generator became inoperable due to any cause other than preventive maintenance or lill

0PERABILITY of the third (common) diesel generator shall include the capability of functioning as a power source for the required unit upon automatic demand from that unit.

iill DIABLO CANYON - UNITS 1 & 2 3/4 8-1 Amendment Nose 15 and 14 i

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ELECTRICAL POWER SYSTEMS LIMITING CONDITION FOR OPERATION ACTION (Continued) testing, demonstrate the OPERABILITY of the remaining 0PERABLE 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 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 .

c.

With one offsite circuit and one diesel generator of the above required A.C. electrical power sources inoperable, demonstrate the l

OPERABILITY of the remaining A.C. sources by performing Specifica-tion 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 there-after; and if the diesel generator became inoperable due to any cause other than preventive maintenance or testing, 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 H0T 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 1

ACTION a. or b., as appropriate with the time requirement of that ACTION statement based on the time of initial loss of the remaining inoperable A.C. power source.

A successful test of diesel 0PERABILITY 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 devices that depend on the remaining OPERABLE 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 SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

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This test is required to be completed regardless of when the inoperable diesel

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generator is restored to operability.

i DIABLO CANYON - UNITS 1 & 2 3/4 8-2 Amendment Nos. 15 and 14

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ELECTRICAL POWER SYSTEMS

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ON LIMITING CONDITION FOR OPERATI three diesel generators by per o f rm A_CTIpN_fContinugdl hours, unless With two of the above required o tion 4.8.1.1.2a.2) within 8 of restore at least one demonstrate the OPERABILITY of dy operating;tatus within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months or the requirements of Specifica e.

to OPERABLE s Following the diesel generators are alrea h time hin the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months .

initial the inoperable offsite sources t tement based on the time ofce, f be in at least HOT STANDBY wit A successful restoration of one offsite sour 8 1 1 2a.2) ffsite A.C. circuit.

OPERABILITY per Specification 4....

requirement of that ACTION s aloss of the remainin i

el gener-t tement for the OPERABLE d esrat N a.

test (s) of diesel generator 3

performed under this ACTION s aators satisfies th l

ired diesel generators inoperab I

l nd at With two or more of the above requdemonstrat tion 4.8.1.1.la. within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months a i

l 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months or be in at least TANDBY l

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the requirements of Specifica l

least once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter; e i

in COLD SHUTDOWN within the follow i

generators are OPERABLE with n h time of With two diesel generators OPERAB within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and t ACTION statement based on t e A success-1 2a.2) inoperable diesel generator.

ABILITY per Specification 4.8.1..

the time requirement of tha 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

LE ent for a restored to OPERAB initial loss of the remaining f

ful test of diesel generator OPERperforme diesel generator test requirement o t

diesel generator satisfies the i

l Fuel Oil Storage and Transfer I

inoperable system to OPERABLE sta ACTION b.

6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months With one supply train of the Diese least HOT STANDBY within the System inoperable, restore the the following 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months .

within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months or be in atand be in HO g.

t one supply train, includin l

i the r or be in at With both supply trains of the Dieseto OPERABL System inoperable, restore at leas h.

common storage system,in the next G hours an least HOT STANDBY withwithin the following 30 hou 1

6 A klth C

ELECTRICAL POWER SYSTEMS LIMITING CONDITION FOR OPERATION ACTION (Continued) e.

With two of the above required offsite A.C. circuits inoperable, demonstrate the OPERABILITY of three diesel generators by performing the requirements of Specification 4.8.1.1.2a.2) within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months , unless the diesel generators are already operating; restore at least one of the inoperable offsite sources 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 STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months .

Following restoration of one offsite source, follow ACTION a. with the time requirement of that ACTION statement based on the time of initial loss of the remaining inoperable offsite A.C. circuit.

A successful test (s) of diesel generator OPERABILITY per Specification 4.8.1.1.2a.2) performed under this ACTION statement for the OPERABLE diesel gener-ators satisfies the diesel generator test requirement of ACTION a.

f.

With two or more of the above required diesel generators inoperable demonstratetheOPERABILITYoftwooffsiteA.C.circuitsbyperformIng l

the requirements of 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; ensure at least two of the diesel generators are OPERABLE within 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 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 . With two diesel generators OPERABLE follow ACTION b. with the time requirement of that ACTION statement based on the time of initial loss of the remaining inoperable diesel generator.

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

g.

With one supply train of the Diesel Fuel Oil Storage and Transfer i

System inoperable, restore the inoperable system to OPERABLE status I

within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months or be in at least H0T STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and be in HOT SHUTDOWN within the following 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months .

h.

With both supply trains of the Diesel Fuel Oil Storage and Transfer System inoperable, restore at least one supply train, including the l

common storage system, to OPERABLE status within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 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 be in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

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DIABLO CANYON - UNITS 1 & 2 3/4 8-2a Amendment Nos.15 and 14 2

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ek V mer-e.mm.mwn er n ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS 4.8.1.1.1 Each of the above required independent circuits between the offsite transmission network and the Onsite Class 1E Distribution System shall be:

a.

Determined OPERABLE at least once per 7 days by verifying correct breaker alignments, indicated power availability, and b.

Demonstrated OPERABLE at least once per 18 months during shutdown by:

1)

Transferring 4 kV vital bus power supply from the normal circuit to the alternate circuit (manually and automatically) and to the delayed access circuit (manually), and 2)

Verifying that on a Safety Injection test signal, without loss of offsite power, the preferred, immediate access offsite power source energizes the emergency busses with permanently cmnected loads and energizes the auto-connected emergency (accident) loads through sequencing timers.

4.8.1.1.2 Each diesel generator

shall be demonstrated OPERABLE:

a.

In accordance with the frequency specified in Table 4.8-1 on a STAGGERED TEST BASIS by:**

1)

Verifying the fuel level in the engine-mounted fuel tank, 2)

Verifying the diesel starts from ambient condition and accelerates to at least 900 rpm in less than or equal to 10 seconds.

The generator voltage and frequency shall be 4160 i 420 volts and 60 1 1.2 Hz within 13 seconds after the start signal.

The diesel generator shall be started for this test by using one of the following signals:

a)

Manual, or b)

Simulated loss of offsite power by itself (Startup bus undervoltage),or c)

A Safety Injection actuation test signal by itself.

Tests of Diesel Generator 3 to satisfy the frequency specified in Table 4.8-1 and in Surveillance Requirement 4.8.1.1.2b for one unit may be counted in determining whether the frequency specified in Table 4.8-1 and in Surveil-lance Requirement 4.8.1.1.2b for the other unit is satisfied. Unit-specific portions of this Surveillance Requirement for Diesel Generator 3 shall be performed on an alternating schedule with signals from Units 1 and 2.

- All diesel generator starts for the purpose of"this surveillance. test may be.

preceded by an engine prelube period.

Further, all surveillance' tests, with the exception of once.per 184 days, may also be preceded by warmup procedures (e.g., gradual acceleration and/or gradual loading > 150 sec) as recommended

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by the manufacturer so that the mechanical stress and wear on the diesel-l engine is minimized.

DIABLO CANYON - UNITS 1 & 2 3/4 8-3 Amendment Nos.15 ~ and 14 e

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ELECTRICAL POWER SYSTEMS l

SURVEILLANCE REQUIREMENTS (Continued) 3)

Verifying the generator is synchronized, loaded to greater than or equal to 2484 kW in less than or equal to 60 seconds, and operates for greater than or equal to 60 minutes, 4)

Verifying the diesel generator is aligned to provide standby power to the associated emergency busses,* and 5)

Verifying the diesel engine protective relay trip cutout switch is returned to the cutout position following each diesel generator test.

b.

At least once per 18 months during shutdown **, by:

1)

Subjecting the diesel to an inspection in accordance with procedures prepared in conjunction with its manufacturer's recommendations for this class of standby service; 2)

Verifying that the load sequence timers are OPERABLE with each load sequence timer within the limits specified in Table 4.8-2; 3)

Verifying the generator capability to reject a load of greater than or equal to 508 kW while maintaining voltage at 4160 + 420 volts and frequency at 60 + 3 Hz; 4)

Verifying the generator capability to reject a load of greater than or equal to 2484 kW without tripping.

The generator voltage shall not exceed 4580 volts during and following the load rejection; 5)

Simulating a loss of offsite power by itself, and:

a)

Verifying de-energization of the emergency busses and load shedding from the emergency busses, and b)

Verifying the diesel starts on the auto-start signal, energizes the emergency busses with permanently connected loads within 10 seconds, energizes the required auto-connected loads through sequencing timers and operates for greater than or equal to 5 minutes while its generator is loaded with the permanent and auto-connected loads.

After energization of these loads, the steady state voltage and frequency of the emergency busses shall be maintained at 4160 1 420 volts and 60 i 1.2 Hz during this test.

May be the associated bus in the other unit if that unit is in MODE 1, 2, 3 or 4.

^^These surveillance requirements can be performed on the third (common) diesel i

generator with only_one unit shutdown.

DIABLO CANYON - UNITS 1 & 2 3/4 8-4 Amendment Nos. 15 and 14 6

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ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued) 6)

Verifying that on a Safety Injection test signal without loss of offsite power, the diesel generator starts on the auto-start signal and operates on standby for greater than or equal to 5 minutes.

The generator voltage and frequency shall be 4160 1 420 volts and 60 1 1.2 Hz within 13 seconds after the auto-start signal; the steady state generator voltage and fre-quency shall be maintained within these limits during this test; 7)

Simulating a loss of offsite power in conjunction with a Safety Injection test signal, and:

a)

Verifying de-energization of the emergency busses and load shedding from the emergency busses; b)

Verifying the diesel starts on the auto-start signal, energizes the emergency busses with permanently connected loads within 10 seconds, energizes the auto-connected emergency (accident) loads through sequencing timers and operates for greater than or equal to 5 minutes while its generator is loaded with the emergency loads. After energization of these loads, the steady state voltage and frequency of the emergency busses shall be maintained at 4160 1 420 volts and 60 1 1.2 Hz during this test; and c)

Verifying that all automatic diesel generator trips, except engine overspeed, low lube oil pressure and generator differential, are bypassed when the diesel engine trip cutout switch is in the cutout position and the diesel is aligned for automatic operation.

8)

Verifying the diesel generator operates for at least 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

During the first 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months of this test, the diesel generator shall be loaded to greater than or equal to 2750 kW and during the remaining 22 hours2.546296e-4 days 0.00611 hours 3.637566e-5 weeks 8.371e-6 months of this test, the diesel generator shall be loaded to greater than or equal to 2484 kW.

The generator voltage and frequency shall be 4160 1 420 volts and 60 i 1.2 Hz within 13 seconds after the start signal; the steady state generator voltage and frequency shall be maintained within these j

limits during thfs test.

Within 5 minutes after completing this 24 hour2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months test, perform Specification 4.8.1.1.2b.5)b);*

9)

Verifying that the auto-connected loads to each diesel generator j

do not exceed the maximum rating of 2750 kW;

10) Verifying the diesel generator's capability to:

t "If Specification 4.8.3.1.2b.5)b) is not satisfactorily completed, it is not i

necessary to repeat the preceding 24-hour test.

Instead the diesel generator j

may be operated at 2484 kW for 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months or until operating temperature has stabilized.

1 DIABLO CANYON - UNITS 1 & 2 3/4 8-5 Amendment Nos.

15 and 14 1

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ELECTRICAL POWER SYSTEMS l

SURVEILLANCE REQUIREMENTS (Continued) a)

Synchronize its isolated bus with the offsite power source while the generator is loaded with its emergency loads upon a simulated restoration of offsite power, j

b)

Transfer its loads to the offsite power source, and c)

Be restored to its standby status.

11) Verifying that with the diesel generator operating in a test i

i mode, connected to its bus, a simulated Safety Injection signal l

opens the auxiliary transformer breaker and automatically sequences the emergency loads onto the diesel generator; and

12) Verifying that the shutdown relay lockout feature prevents diesel generator starting only when required:

a)

Generator differential current-high, or b)

Engine lube oil pressure-low, or i

c)

Emergency stop button actuated, or d)

Overspeed trip actuated.

c.

At least once per 10 years or af ter any modifications which could affect diesel generator interdependence by starting all diesel generators simultaneously, during shutdown, and verifying that all diesel generators accelerate to at least 900 rpm in less than or equal to 10 seconds, d.

At least once per 31 days and after each operation of the diesel where the period of operation was greater than or equal to 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months by checking for and removing accumulated water from the day tank.

4.8.1.1.3 The Diesel Fuel Oil Storage and Transfer System shall be demonstrated OPERABLE:

a.

At least once per 31 days by:

1)

Verifying the fuel level in the fuel storage tank, and 2)

Verifying that each fuel transfer pump starts and transfers fuel from the storage system to each engine-mounted tank via I

installed lines.

b.

At least once per 31 days by checking for and removing accumulated water from the fuel oil storage tanks; r

c.

By sampling new fuel oil in accordance with ASTM-D4057 prior to addition to the storage tanks and:

DIABLO CANYON - UNITS 1 & 2 3/4 8-6 Amendment Nos.15 and 14 t

______----..____--___-__a

ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued) 1)

By verifying in accordance with the tests specified in ASTM-D975-81 prior to addition to the storage tanks that the sample has:

a)

An API Gravity of within 0.3 degrees at 60"F, or a specific gravity of within 0.0016 at 60/60 F, when compared to the supplier's certificate, or an absolute specific gravity at 60/60 F of greater than or equal to 0.83 but less than or equal to 0.89, or an API gravity of greater than or equal to 27 degrees but less than or equal to 39 degrees; b)

A kinematic viscosity at 40 C of greater than or equal to 1.9 centistokes, but less than or equal to 4.1 centistokes, l

supplier'y was not determined by comparison with the l

if gravit s certification; c)

A flash point equal to or greater than 125*F; and d)

A clear and bright appearance with proper color when tested in accordance with ASTM-04176-82.

2)

By verifying within 30 days of obtaining the sample that the i

other properties specified in Table 1 of ASTM-D975-81 are met when tested in accordance with ASTM-D975-81 except that the i

analysis for sulfur may be performed in accordance with ASTM-D1552-79 or ASTM-02622-82.

i d.

At least once every 31 days by obtaining a sample of fuel oil in i

accordance with ASTM-D2276-78, and verifying that total particulate I

contamination is less than 10 mg/ liter when checked in accordance l

with ASTM-D2276-78, Method A; e.

At least once per 10 years by:

i l

l 1)

Draining each fuel oil storage tank, removing the accumulated sediment and cleaning the tank using a sodium hypochlorite or equivalent solution, and 2)

Performing a visual examination of accessible piping during an operating pressure leak test.

4.8.1.1.4 Reports - All diesel generator failures, valid or non-valid, shall be reported as a Special Peport within 30 days to the Commission pursuant to Specification 6.9.2.

Reports of diesel generator failures shall include the information recommended in Regulatory Position C.3.b of Regulatory Guide 1.108, Revision 1, August 1977.

If the number of failures (on a per diesel generator basis) in the last 100 valid tests is greater than or equal to 7, the report shall be supplemented to include the additional information recommended in Regulatory Position C.3.b of Regulatory Guide 1.108, Revision 1, August 1977.

DIABLO CANYON - UNITS 1 & 2 3/4 8-7 Amendment Nos. 15 and 14

TABLE 4.8-1 DIESEL GENERATOR TEST SCHEDULE Ntaber of Failures in Number of Failures in

)

Last 20 Valid Tests

Last 100 Valid Tests

Test Frequency 51 55 At least once per 31 days 1 2**

16 At least once per 7 days l

Criteria for determining number of failures and number of valid tests shall be in accordance with Regulatory Position C.2.e of Regulatory Guide 1.108, Revision 1, August 1977, where the last 20 and 100 tests and failures are determined on a per diesel generator basis.

For the purpose of this sche-dule, only valid tests conducted after the completion of the preoperational test requirements of Regulatory Guide 1.108, Revision 1, August 1977, shall be included in the computation of the "Last 20 Valid Tests" and the "Last 100 Valid Tests." For the purpose of determining the required test frequency, the previous test failure count may be reduced to zero if the specific cause for the diesel unreliability has been identified and resolved; appropriate post-maintenance operation and testing have been completed; and if acceptable reliability has been demonstrated.

The reliability criterion shall be the successful completion of 14 consecutive tests in a single series. These tests shall be in accordance with Specification 4.8.1.1.2a.2).

- The associated test. frequency shall be maintained until seven consecutive failure free demands have been performed and the number of failures in the last 20 valid demands has been reduced to one.

DIABLO CANYON - UNITS 1 & 2 3/4 8-8 Amendment Nos.15 and i4 m

v t e Letter Sequence Other
TAC:60067, (Approved, Closed) TAC:60068, (Approved, Closed)
Initiation Acceptance... Administration Questions Answers Results Approval Other: ML20206P034, ML20236B125
MONTHYEAR1986-06-20 [Table View]

ML20236B125

Text

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