Text

Proposed Tech Specs,Modifying Existing Sys to Provide Two Electrical Buses Per 480 Volt Train W/Addl Manual Transfer Bus
	ML20034A724
Person / Time
Site:	San Onofre
Issue date:	04/19/1990
From:	; SOUTHERN CALIFORNIA EDISON CO.
To:	;
Shared Package
ML13331A392	List: ML13331A391; ML13331A393; ML20034A724;
References
	NUDOCS 9004240188
	Download: ML20034A724 (21)
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i 9aftr 4 1.2 (cont 19ued) l

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i theek receumaev i

2.

Safety a.

!cron Concentration Monthly when the react:r 's f

Injecti:n Line

ritical and prior to retar9 anc WST Water of criticality =nen a :ert:c i

Samples of tuberiticality extenes t..e

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test beyond 1 month t

3.

C:ntrol Roc a.

Verify that all rods At each refueling snut::wn Or:p

.ove from full cut to full in, in less than i

2.44 seconds 4

(Deleted) 5.

Pressurizer a.

Pressure Setpoint At each refueling shutdown f

Safety Valves.

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6.

Main Steam a.

Pressure Setpoint At each refueling shutdown Safety Valves 7.

Main Steam a.

Test for OPERA 811.!TY At each refueling shutdown Power Operated i

Relief Valves

/5 8.

Tr'isodium 4.

Check for system At each refueling shutcewa Phosphate availability as Additive delineated'in i

Technical Specification 4.2 9.

Hydraaine a.

Hydrazine concentra-Once every six months when Tank Water tion the reactor is critical and Samples prior to returri of critica.

lity when a period of subtriticality extends the i

test interval beyond six j

months

10. Transfer a.

Verify that the fuse Monthly, when the reactor is Switch No. 7 block for breaker critical and prior to t

8 1181 to MCC 1 is returning reactor to criti-i removed cal when period of suberiti-cality extended the test 1

interval beyond one month j

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.i SAN ON0FRE - UNIT 1 4.1 6 AMENOMENT N0:

25, 29, 56, 70, 100, 122, 120 l

b5 $$$$f,y,

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(4) The battery charger for 125 volt DC Bus No. 1 mill supply at least 800 amps DC at 130 volts DC for at least 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months .

(5) The battery charger for 125 volt DC Bus ee. 2 vill sveply at least al amps DC at 120 volts DC fer at least 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months , and (4) The battery charger for the UPS will sueely at least 10 amps AC at 480 volts AC for at least 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months as measured at the output of the UPS inverter, d.

At least once per 18 months, during shutdown. ~ ty verifying that the battery capacity i8 adequate to supply and maintain in CPEAA8LE status all-of the actual er staulated emergency loads for the -

design duty cycle when the battery is subjected.

to a battery service test.

e.

At least once per 60 months. during shutdown, by verifying that the battery capacity is at least

85. 85% for Battery Bank No. 1. of the manufacturer's rating when subjected to a performance discharge test. Once per 60 month interval, this perforesace discharge test may be performed in lieu of the battery service test required by Surveillance Requirement _4.4.0.2.d.

f.

Annual performance discharge tests of battery

. capacity shall be given to any battery that shows signs of degradation or has reached 85% of-the service life espected for the application.

Degradation is indicated when the battery capacity drops more than 1 5 of rated capacity free its average on previous performance tests, or is below $5 of the manufacturer's rating..

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E.

The reesired Safety Injection System Load Sequencer shall be demonstrated CPERA8LE at least once per 31 days on a.

STAGGRAID TEST BASIS. by staulating $!$ LOP

conditions and verifying that the resulting interval between each 1

load group is within a 15 of its design interval.-

F.

The required diesel generators and the'$afety Injection Systen Lead Sequencer shall be demonstrated OPERA 8LE 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 cItss of standby service.

SAN ONCFRt. UNIT 1 4.4-3 AMEN 0 MENT NO: 15. 58. 82.

84. 117, 130

2.

Simulating SISLOP*, and:

a.

Verifying operation of circuitry which 10cks out non critical equipment.

b.

Verifying the diesel perfoms a DG FAST START fr:m staneby condition on the auto start signal.

i energizes the emergency buses with pomanently.

connected loads and the auto connected emergency loads ** through the load seguencer (with the i

exception of the feedwater, safety injection, charging and refueling water pumps whose respective breakers may be racked-out to the tes*

t position) and operates for F 5 minutes wnile its generator is loaded with the emergency loads, c.

Verif/ing that on-the safety injection actuation signal, all diesel generater. trips, except engine overspeed and generator differential, are automatically typassed.

3.

Verifying the generator capability to reject 4 load of 4,000 kW without tripping.

The generator voltage shall not exceed 4,800 volts and the generator speed 5

shall not exceed 500 rpe (nominal speed plus 757, of.

the difference between nominal speed and the overspeed trip setpoint) during and following the load rejection.

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$!$ LOP is the signal generated by coincident loss of offsite power (loss of voltage on Buses 1C and 2C).and demand for safety injection.-

The sue of all loads on the engine shall not exceed 6,000 kW.

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SAN ONOFRE UNIT 1 4.4 4 AMENOMENT No:

25, 82, 84, gl, 104, 123, 124, 130.

4-

3-C.cerating cita a tattery cell's parameter outsice the nor al-limit but citnin the allorable value specified~in Tacle 4.4 1 is permitted for up to 7 days.

During this 7 day perioc:

(1) the allownele values for electrolyte level ensures no anysical camage to the plates with an accouate electron transfer capacility; (2) the allowable value for the aversge specific aravity of all the cells not more than.020 telow l

normal fuIl charge specific gravity, ensures that the decrease in rating will be less than the safety margin provided in sizing; (3) the allowable value for an -incivicual

ell's specific gravity, ensures that an individual cell's specific gravity will not be more than.040 below normal full charge specific gravity and that the overall capability of tr.e battery will be ma',ntained within an acceptable limit: anc (4) the allowable value for an' individual cell's float voltage, greater than't.07 volts, ensures the battery's capaeility to perform its design fu.9ction.

REFERENCE:

(1) Supplement No.' I to Final Engineering Report and Safety Analysis, Section 3.-Questions 6 and 8.

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SAN ON0FRE UNIT 1 4.4-7 N4ENOMENT N0:

25, 56, 84, 1;o b

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Fi Proposed Technical Specifications a

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3.7 AUXILIARY ELECTRICAL SUPPLY 3.7.1

[LECTRICAL SUPPLY: OPERATING APPLICABILITY: MODES 1, 2, 3, and 4 OBJECTIVE:

To define those conditions of electrical power availability i

necessary to provide for safe reactor operation and to provide i

for the continuing availability of engineered safeguards.

SPECIFICATION:

a.

One Southern California Edison Company and one San Diego Gas & Electric Company high voltage transmission line to the switchyard and two transmission circuits from the switchyard, one imediate and one delayed access, to the onsite safety-related distribution system shall be.

OPERABLE. This configuration constitutes the two required offsite circuits.

l b.

Two redundant and independent diesel generators shall be 4

OPERABLE each with:

j 1.

A separate day tank containing a minimum of 290 gallons of fuel, 4

2.

A separate fuel storage system containing a minimum of i

37,500 gallons of fuel, and 3.

A separate fuel transfer pump.

c.

Train A Emergency AC Buses shall be OPERABLE, comprised of:

1.

4160 volt Bus IC, 2.

480 volt Buses 1 and 3, and associated station service transformers with tie breaker open, d.

Train B Emergency AC Buses shall be OPERABLE, comprised of:

1.

4160 volt Bus 20, 2.

480 volt Buses 2 and 4, and associated station service i

transformers with tie breaker open.

e.

120 volt AC Vital Buses 1, 2, 3 & 3A, and 4 energized from associated inverters connected to DC Bus 1.

f.

120 volt AC Vital Buses 5 and 6 energized from associated inverters connected to DC Bus 2.

g.

125 volt DC Bus 1 shall be OPERABLE and energized from Battery No.1, with at least one full capacity charger.

h.

125 volt DC Bus 2 shall be OPERABLE and energized from Battery No. 2, with at least one full capacity charger.

t SAN ON0FRE - UNIT 1 3.7-1 AMENDMENT NO:

25, 52, 68, 84,l30

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t

i. Two trains of Safeguards Load Sequencing Systems (SLSS) shall be OPERABLE.*

1

j. The MOV 850C Uninterruptible Power Supply (UPS) OPERABLE and

[

energized from the battery with its full capacity charger.**'

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k. Manual Transfer Switch 7 (MTS-7) shall be OPERABLE and I

energized from MCC-2.

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1. Manual Transfer Switch 8 (MTS-8) shall be OPERABLE and

-3 energized from MCC-4.

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ACTION:

A. With one of the required offsite circuits inoperable, demonstrate the operability of the remaining AC sources by j

performing Surveillance Requirement A of Technical

}

Specification 4.4 within one hour and at least once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter and Surveillance Requirement B.I.a within.

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

Restore the circuit to OPERABLE status within-j 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. If one diesel generator is declared inoperable, demonstrate the operability of the two offsite transmission circuits and the remaining diesel generator by performing Surveillance Requirement A of Technical Specification 4.4 within one hour I

and at least once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months 'thereafter and Surveillance l

Requirement B.I.a within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

Restore the-inoperable 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 AC electrical power sources inoperable, demonstrate the operability of the remaining AC sources by performing Surveillance Requiremont A of Technical Specification 4.4 within one hour-and at least once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter and 1

Surveillance Requirement B.I.a within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months .

Restore at i

least one of the inoperable sources to OPERABLE status ithin 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 . Have at least two offsite circuits and two diesel generators OPERABLE within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months from the time of initial loss or be in at l

1 east 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 .

D. With one diesel generator inoperable as in B or C above, verify that:

(1) all required systems, subsystems, trains, The automatic load function may be blocked in Mode 3 at a pressurizer pressure s 1900 psig.

- Applicable in MODES 1, 2, and 3 above 500 psig.

SAN ON0FRE - UNIT 1 3.7-2 AMENDMENT NO:

25, 84, 106, 130-

,, -..,,, ~ ~ ~ - -. -

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components, and devices that depend on the remaining OPERABLE diesel generator as a source of emergency power are also OPERABLE; and (2) the steam-driven auxiliary feedwater pump is OPERABLE in MODES 1, 2, and 3.

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 .

4 E. With two required offsite circuits inoperable, demonstrate the, operability of two diesel. generators by performing Surveillance. Requirement B.I.a of Technical Specification 4.'4 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 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 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months . Have at'least two offsite circuits'-

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and two diesel generators OPERABLE within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months from the.

time of initial loss or be in at least HOT STANDBY within the.

I 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 .

F. With two of the above required diesel generators inoperable, demonstrate the operability of two offsite circuits by performing Surveillance Requirement A of Technical Specification 4.4 within one hour _and at least once per 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months thereafter.

Restore at.least one of the inoperable i

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 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 both 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 i

initial loss or be in at least HOT STANDBY within the next 6-hours and in COLD SHUTDOWN within'the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

G. With less than the above train of Emergency AC buses OPERABLE, restore the inoperable buses within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months or be in at least i

HOT STANDBY wit 11n 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 .

H. With one AC Vital Bus either not energized from its associated I

inverter, or with the inverter not connected to its associated DC Bus:

(1) re-energize the AC Vital' Bus 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 ; and (2) re-energize l

the AC Vital Bus from its associated inverter connected to its associated DC Bus within 24-hours or be in at least HOT

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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 .

1. With one DC bus inoperable or not energized from its i

associated battery and at least one full capacity charger, re-energize the DC Bus from its associated battery and at least I

one full capacity charger within 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months or be in at least HOT l

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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SAN ON0FRE - UNIT 1 3.7-3 AMENDMENT N0: 25, 84, 130 o

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i J. With one Safeguards Load Sequencing System inoperable, restore the inoperable sequencer to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months or 1

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 l

SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

l K. With the MOV-8500 UPS inoperable, or not energized from its associated battery and its full capacity charger, restore the UPS to OPERABLE status and re-energize the UPS from its j

i associated battery and its full capacity charger within 72 l

hours or be in at least HOT STANDBY within the next-6 hours i

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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L. With MTS-7 inoperable or not energized from MCC-2, restore MTS-7 to OPERABLE status and re-energize MTS-7 from MCC-2 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 he following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

M. With MTS-8 inoperable or not energized from MCC-4, restore

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MTS-8 to OPERABLE status and re-energize MTS 8 from MCC-4 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 .

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BASIS:

The station is connected electrically to the Southern California Edison Company and San Diego Gas & Electric Company system via

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either of two physically independent high voltage transmission i

routes composed of four Southern California Edison Company high voltage lines and four San Diego Gas & Electric Company high voltage lines.

i Of the four Southern California Edison Company lines, any one can j

i serve as a source of power to the station auxiliaries at any time. Similarly, any of the four San Diego Gas & Electric Company lines can serve as a source of power to the station auxiliaries at any time.

By specifying one transmission line from each of the two physically independent high voltage l

transmission routes, redundancy of sources of auxiliary power for l

an orderly shutdown is provided.

l Similarly, either transformer A or B, along with transformer C, -

provide redundancy of 4160 volt power to the auxiliary equipment, 4

and in particular to the safety injection trains.

In addition, each 4160 volt bus has an onsite diesel generator as backup.

In MODES 1, 2, 3 and 4, two diesel generators provide the-necessary redundancy to protect against a failure of one of.the diesel generator systems or in case one diesel generator system is taken out for maintenance, without requiring a reactor i

shutdown. This also eliminates the necessity for depending on one diesel generator to operate for extended periods without shutdown if it were required for post-accident conditions.

4 SAN ON0FRE - UNIT 1 3.7-4 AMENDMENT N0:

25, 52, 68, 84, 106, 130

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i When one diesel generator is inoperable, there is an additional ACTION requirement to verify that all required systems, i

subsystems, trains, components and devices, that depend on the J

remaining OPERABLE diesel generator as a source of emergency power, are also OPERABLE.

In addition, the ACTION STATEMENT requires a verification that the steam-driven auxiliary feedwater pump is OPERABLE in MODES 1, 2, and 3.

These requirements are intended to provide assurance that a' loss of offsite power event will not result in a complete loss of safety function of critical systems duririg the period one of the diesel generators is inoperable. The term verify as used in this i

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centext means to administrative 1y check by examining logs or j

other information to determine if certain components are out-of-service for maintenance or uther reasons.

It does not mean to perform the surveillance requireme%s needed to demonstrate the operability of the component.

During normal operations, the 480 volt system is considered OPERABLE if the four 480 volt buses and four station service s

transformers are OPERABLE with respective tie breakers open.

This will ensure that the 480V main breakers and transformers remain OPERABLE during the worst loading condition in case of a SIS without LOP.

The primary power source for Vital Buses 1, 2, 3, 3A, and 4 is l

Train A DC Bus 1.

The alternate power source is available from MCC-2 through MTS-7. The 1987 RPS and ESF single failure analyses credited the Train B backup power to these vital buses through MTS-7.

Correct o>eration of the safety injection system is assured by-the opera)ility of the load sequencers and the UPS for MOV-850C and MOV-358 (H0V-850C UPS).

Correct operation of the recirculation system is assured by the operability of the MOV-8500 UPS which also supplies M0V-358.

I Manual Transfer Switch 8 (MTS-8) provides the means to power MOV-883 and the MOV-850C UPS from either Train A or Train B.

However, due to single failure consideration and environmental effects, MTS-8 is normally powered from MCC-4 on Train B.

M0V-883 is the discharge valve from the RWST and must remain open during the safety injection phase and close with initiation of recirculation.

l SAN ONOFRE - UNIT 1 3.7-5 AMENDMENT NO:

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3.7.2 ELECTRICAL SUPPLY:

SHUTDOWN APPLICABILITY: MODES 5 and 6 OBJECTIVE:

To define those conditions of available electrical-power to ensure that the station can be maintained in the shutdown or refueling condition for extended periods.

EECIFICATION:

a.

One Southern California Edison Company or San Diego Gas and Electric Company high voltage transmission line to the switchyard and one transmission circuit from the switchyard, immediate or delayed access, to the onsite safety-related distribution system shall be OPERABLE.

b.

One diesel generator shall be OPERABLE which-is capable of automatic start with:

1.

A day tank containing a minimum 290 gallons of fuel, 2.

A fuel storage system containing a minimum of 37,500 gallons of fuel, and 3,

A fuel transfer pump.

c.

One train of AC buses shall be OPERABLE comprised of:

1, 4,160 volt Bus 10, and 480 volt Buses 1 and 3 with at least one associated station service transformer; OR 2.

4,160 volt Bus 20, and 480 volt Buses 2 and 4 with at least one associated station service transformer, d.

120 volt Vital Buses 1, 2, and 4 energized from associated inverters connected to DC Bus 1.

e.

One 125 volt DC Bus OPERABLE and energized from the associated battery with at least one full capacity charger.

ACTION:

With less than the minimum required AC and DC electrical sources specified above, suspend all operations involving CORE ALTERATIONS or positive reactivity changes.

Initiate corrective actions to energize the required electrical buses.

Within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months , depressurize and vent the RCS through at least a 1.75 square inch vent.

f} ASIS:

In MODES 5 and 6, the requirement for one source of offsite power and one diesel generator to be OPERABLE will provide diverse and redundant electrical power sources in order that the station can be maintained in the COLD SHVTDOWN or SAN ONOFRE - UNIT 1 3.7-6 AMENDMENT W 25, 52, 68 84, 106, 120, 130

REFUELING condition for extended time periods. Additionally, this requirement will assure that operations involving core alterations or positive reactivity changes can be conducted safely. One SST and 480V main breaker will be capable of supplying the necessary power to the two associated 480V buses without exceeding their maximum loading ratings due to the reduced bus loading.

Vital Buses 1, 2, and 4 power redundant source range nuclear instrument channels and Overpressure -

Mitigation System (OMS) channels and are required to support operations in MODES 5 and 6.

Temporary cross training between the two emergency AC trains is allowed only during the outages for maintenance purposes by use of power cables provided between 480 volt Bus 4 and Bus 1.

The supply 480V bus, when cross-trained, does not become inoperable. Temporary cross-training will require two breakers in series to maintain adequate separation.

In addition, the receiving bus cannot be declared OPERABLE.

Loads will be added manually and limited by the operator

action, i

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9 SAN ONOFRE - UNIT 1 3.7-7 AMEN 0 MENT NO:

TABLE 3.14.2.1 RE0VIRED SPRINKLER AND SPRAY SYSTEMS Fire Area /

Zone Hazard Location System Tvoe 1

Reactor coolant pumps, Inner Containment Sphere Deluge - borated RHR pumps, cable water spray

Cable insulation Outer Containment Sphere Deluge - borated outside secondary water spray

shield i

2A Charging Pumps Charging Pump Room Wet Pipe 4B/4D Cable Insulation Cable Trays, Deluge water spray Yard / Breezeway Area 4D Transformer oil Station Service Transformer 1 Deluge water spray Transformers 2 & 4 Deluge water spray 9A Turbine lubricating oil System #1 chemical Deluge water spray r

and cable insulation treatment area Turbine lubricating oil System #2 lube oil Deluge water spray and cable insulation reservoir area (north half)

Turbine lubricating oil System #3 lube oil Deluge water spray and cable insulation reservoir area (south half)

Turbine lubricating oil System #4 480 V room Wet pipe wall & turbine building north wall Ttrbine lubricating oil System #5 north turbine Wet pipe and cable insulation building area protection Hydrogen seal oil Hydrogen seal oil unit Deluge water spray 17A Diesel Generator North Diesel Generator Pre-Action Sprinkler 18 Diesel Generator South Diesel Generator Pre-Action Sprinkler This includes a refueling water pump, 240,000 gallons of borated water in the refueling water storage tank and associated system valves.

SAN ON0FRE - UNIT 1 3.14-6 AMENDMENT NO: 130, 131

i i'

TABLE 3.14.6.1 FIRE DETECTION INSTRUMENIS i

Reauired Instruments Doerable Fire Area / Zone Location Enriv Warnina Actuation 1

Containment Sphere Inside Secondary Shield 8

Outside Secondary Shield 20 1

2A Reactor Auxiliary Bldg.

7 Lower Level 9

1 4A&B East and West Penetration Areas 33 4C Doghouse 2

4B/4D Cable Trays Yard / Breezeway Area 2

4D Service Transformer 1 2

Service Transformer 2 & 4 2

4G DSD Diesel Generator Enclosure 6

DSD Switchgear/ Battery Room 3

7 480V Switchgear Room 8

8 4160V Switchgear Room 16 9A Turbine Building Ground Floor Instrument Air Compressors 1

Exciter and MCC-4 Area 16 2

l Lube Oil Reservoir 29 12**

llA Health Physics and Locker Room 5* (4 at present)-

l 11B HVAC Equipmert Room 3

l 12 Offices 1st Floor i

Power Block 7

Upon completion of DCP 3449.01.

- Includes 6 line-type detectors.

SAN ONOFRE - UNIT 1 3.14-17 AMENDMENT NO:

31, 130, 131

-i

t i

TABLE a.1.2 (continued)

Check Frecuencv 2.

Safety a.

Baron Concentration Monthly when the reactor is Injection Line critical and prior to return and RWST Water of criticality when a period Samples of subcriticality extends the test beyond 1 month 3.

Control Rod a.

Verify that all rods At each refueling shutdown Drop move from full out to full in, in less than 2.44 seconds 4

(Deleted) 5.

Pressurizer a.

Pressure Setpoint At each refueling shutdown Safety Valves 6.

Main Steam a.

Pressure Setpoint At each refueling shutdown Safety Valves 7.

Main Steam a.

Test for OPERABILITY At each refueling shutdown Power Operated Relief Valves 8.

Trisodium a.

Check for system At each refueling shutdown Phosphate availability as Additive delineated in Technical i

Specification 4.2 9.

Hydrazine a.

Hydrazine cencontra-Once every six months when Tank Water tion the reactor is critical and Samples prior to return of critica-lity when a period of subcriticality extends the test interval beyond six 2

months 10.

Not used.

SAN ONOFRE - UNIT 1 4.1-6 AMENDMENT NO: 25, 29, 56, 70, 100, 122, 130

(4) The battery charger. for 125 volt DC Bus No. I will supply at least 800 amps DC at 130_ volts DC for at least 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months , (5) The battery charger for 125 volt DC Bus No. 2 will supply at least 45 amps DC at 130 volts.

DC for at least 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months , and (6) The battery charger for the UPS will supply at least 10 amps AC at 480 volts AC fbr at 4

least 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months as measured at the output of the UPS invertor, d.

At least once per 18 months, during shutdown, by verifying that the battery capacity is adequate to supply and maintain in OPERABLE status all of the actual or simulated emergency loads for the design duty cycle when the battery is subjected to a battery service test, e.

At least once per 60 months, during shutdown, by-verifying that the battery capacity is at least 80%, 85% for Battery Bank No. 1, of the manufacturer's rating when subjected to a-performance discharge test. Once per 60 month interval, this performance discharge test may be performed in lieu of the battery service test-required by Surveillance Requirement 4.4.D 2.d.

f.

Annual performance discharge. tests of battery capacity shall be given to any battery that shows signs of degradation or has reached 85% of the service life expected for the a) plication.

Degradation is indicated when t1e battery capacity drops more than 10% of rated capacity from its average on previous performance tests, or is below 90% of the manufacturer's rating.

E.

The required Safeguards Load Sequencing Systems (SLSS) shall be demonstrated OPERABLE at least once per-31 days l

on a STAGGERED TEST BASIS, by simulating SISLOP*

l conditions and verifying that the resulting interval between each load group is within 10% of its. design i

interval.

l l

F.

The required diesel generators and the Safeguards Load l

Sequencing Systems (SLSS) shall be demonstrated OPERABLE 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.

SAN ONOFRE - UNIT 1 4.4-3 AMENDMENT NO:

25, 56, 82, 84, 117, 130 l-

-l

2.

Simulating SISt.0P*, and:

a.

Verifying operation of circuitry which locks out non-critical equipment, b.

Verifying the diesel performs a DG FAST START from standby condition on the auto start signal, energizes the emergency buses with permanently connected loads and the auto connected emergency loads ** through the load sequencer (with the exception of the feedwater, safety injection, charging and refueling water pumps whose respective breakers may be racked-out to the test position) and operates for 1 5 minutes while its generator is loaded with the emergency loads, c.

Verifying that on the safety injection actuation signal, all diesel generator trips, except engine overspeed and generator differential, are automatically bypassed.

3.

Verifying the generator capability to reject a load of 4,000 kW without tripping.

The generator voltage shall not exceed 4,800 volts and the generator speed shall not exceed 500 rpm (nominal speed plus 75% of the difference between nominal speed and the overspeed trip setpoint) during and following the load rejection.

G.

Manual Transfer Switches 1.

Verify once every 31 days that the fuse block for breaker 8-1181 in MCC-1 for MTS-7 is removed.

2.

Verify once every 31 days that MTS-8 is energized from breaker 8 1491 from MCC 4 and the cabinet door is locked, and that breaker 8-1122 from MCC-1 is locked open.

1 SISt.0P is the signal generated by coincident loss of offsite power (loss of voltage on Buses IC and 20) and demand for safety injection.

The sum of all loads on the engine shall not exceed 6,000 kW.

SAN ON0FRE - UNIT 1 4.4-4 AMENDMENT NO:

25, 82, 84,-

95, 104, 123, 124, 130 j

i Operating with a battery cell's parameter outside the normal i

limit but within the allowable value specified in Table 4.4-1 i

is permitted for up to 7 days. During this 7 day period:

(1) the allowable values for electrolyte level ensures no physical damage to the plates with an adequate electron transfer capability;. (2) the allowable value for. the average specific gravity of all the cells, not more than.020 below.

normal full charge specific gravity, ensures that the decrease in rating will be less than the safety margin provided in sizing; (3) the allowable value for an individual cell's specific gravity, ensures that an individual cell's-s pecific gravity will-not be more than.040 below normal full c1arge specific gravity and that the overall capability of the battery will be maintained within an acceptable limiti and'(4) the allowable value for an individual cell's float voltage, greater than 2.07' volts, ensures the battery's capability to perform its design function.

Verifying required position for manual transfer. switches' ensure sir.gle failure and environmental interaction recuirements are satisfied.

The normal alignments for MTS-7 anc MTS-8 are MCC-2 and MCC-4, respectively.

REFERENCE:

(1) Supplement No. I to Final Engineering Report and Safety Analysis, Section 3, Questions 6 and 8.

SAN ON0FRE - UNIT 1 4.4-7 AMENDMENT NO:

25, 56, 84, 130

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