ML17299B245

Proposed Tech Specs,Changing Section 3/4.8.1, AC Sources & Table 4.8-1 Re Diesel Generator Test Schedule

ML17299B245
Person / Time
Site:	Palo Verde
Issue date:	05/14/1986
From:	ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
To:
Shared Package
ML17299B244	List: ML17299B243 ML17299B245
References
TAC-61750, NUDOCS 8605200280
Download: ML17299B245 (30)

Text

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3/4.8 ELECTRICAL POWER SYSTEMS 3/4.8. 1 A.C. SOURCES E RATING LI TING CONDITION FOR OPERATION

'3.8.1. As a minimum, the following A.C. electrical power source shall be OPERABL

a. wo physically independent circuits from the offsit transmission ne work to the switchyard and two physically indep dent circuits fro the switchyard to the onsite Class 1E distri ution system, and

b. Two s arate and independent diesel generators each ~t

1. Sep rate day fuel tank with a minimum 1 el of 2.75 feet (550 allons of fuel), and

2. A sepa te fuel storage system with minimum level of 80K (71,500 al lons of fuel), and

3. A separate fuel transfer pump.

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

ACTION:

a. With either an offsit circuit r diesel generator of the above required A.C. electrica powe sources inoperable, demonstrate the OPERABILITY of the remai 'n A.C. sources by performing Surveillance Requirements 4.8. 1. 1. la. a 4.8. 1. 1.2a.4 within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> and at least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> th r fter;. restore at least two offsite circuits and two diesel ene tors to OPERABLE status wftTiin 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or be in at least HOT ANQBY ithin the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the f llowing 3 hours.

b. With one offsite ci cuit and one esel generator of the above required A.C. ele rical power sour es inoperable, demonstrate the OPERABILITY of t e remaining A. C. so rces by performing Surveillance Requirements 4. . 1.1. la. and 4.8. 1. l. .4. within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> and at least once pe 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter; res re at least one of the inoperable s urces to OPERABLE status ws hin 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> or be in at least=HOT ANDBY within-the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within th following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />. Restore at east two offsite circuits and two iesel generators to OPERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> from the ti e of initial loss or be in at least HO STANDBY within the next hours and in COLD SHUTDOWN within the fo lowing 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

C. Wi one diesel generator inoperable in addition o ACTION a. or b.

a ve, verify that:

All required systems, subsystems, trains, compo ents, and devices that depend on the remaining OPERABLE diesel gen ator as a source of emergency power are also OPERABLE, and

2. When in MODE 1, 2, 3, or 4", the steam-driven auxil ry feed pump is OPERABLE.

If these conditions are not satisfied within 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />, be in t least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN with the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

~Until the steam generator is no longer required for heat removal.

PALO VERAF - IIMTT (1 =-, . 3/4 8-1 860M00280 860>>+

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7 ELECTRICAL POWER SYSTEMS LIMITING CONDITION FOR OPERATION Continued)

A ION (Continued)

With two of the above required offsite A.C. circuits inop rable, demonstrate the OPERABILITY of two diesel generators by erforming Surveillance Requirement 4.8.1. 1.2a.4. within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> d at least nce per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter, unless the diesel gener ors are already o crating; restore at least one of the inoperable o fsite sources to OP ABI E status within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> or be in at least OT STANDBY .within .

the ext 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />. With only one offsite source estored, restore at least wo offsite circuits to OPERABLE status thin 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> from time of initial loss or be in at least HOT ST DBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> a d in COLD SHUTDOWN within the foll wing 3Q hours.

With two of he above required diesel ge rators inoperable, demonstrate t OPERABILITY of two offs e A.C. circuits by performing Sur illance Requirement 4. . l. 1. la. within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> and at least once pe 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter; restore at least one of the inoperable diesel enerators to OPE BLE status within 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> or be in at least HOT STA BY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 0 hours0 days <br />0 hours <br />0 weeks <br />0 months <br />. store at least two diesel generators to OPERABLE status wit in 72 ho s from time of initial loss or be in at least HOT STANDBY ithin the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 h urs.

SURVEILLANCE RE UIREMENTS 4.8.1.1.1 Each of the above r quired indepe dent circuits between the offsite transmission network and the nsite Class lE stribution system shall be:

a. Determined OPERA E at least once per days by verifying correct breaker alignme ts, indicated power avai blity, and

b. Demonstrated PERABLE at least once .per 18 nths during shutdown by transferri (manually) unit power supply fro the normal circuit to the alter te circuit.

4.8. 1. 1.2 Each esel generator shall be demonstrated OPE BLE:

a0 In cordance with the frequency specified in Table 4.8-1 on a ST GERED TEST BASIS by:

Verifying the fuel level in the day tank,

2. Verifying the fuel level in the fuel storage tank,

3. Verifying the fuel transfer pump can be started and tran fers fuel from the storage system to the day tank, PALO VERDE " UNIT 1 3/4 8-2

(I

.0 ELECTRICAL POWER SYSTEMS SURVEILLANCE RE UIREMENTS (Continued 4, Veri fying the diesel starts from ambient condition and cel cr-ates to at least 600 rpm in less than or equal to 10 s conds."

The generator voltage and frequency shall be 4160 + 0 volts and 60 + 1. 2 Hz wi thi n 10 seconds after the star t s 'nal . The diesel generator shall be started 'for this test b using one of the following signals:

b c)

) Manual B1 Simul ated

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dT=-"fi l oss-of-of f i te s

p power b

in i

c f.

juncti on with an ESF actuati on test signal .

d) ESF actuation test signal by i el f.

5. Veri fyi the generator, i s synchroni ed, l oaded to greater than or equal o 5500 kW in less than or equal to 5 minutes, and operates th a load greater than or equal to 5500 kW for at least an a i ti onal 60 minutes, nd 6~ Veri fying the di ese1 generato is aligned to provide standby power to the a oci ated emer ency busses.

b. At least once per 31 d s and ter each operation of the diesel where the period of ope ti on was greater than or equal to 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> by checki ng for 'nd'emoving a umul ated water from the day tanks.

C. By sampling new fuel oil 'n ccordance with ASTM D4057-81 prior to ti addi on to the storage ank and:

1. By verifying in ccordance wi th the tests specified in ASTM D975-81 pri or addition t the storage tanks that the sample has:

a) An AP Gravi ty of within 3 degrees at 60 .F or a speci fi c grav ty of within 0: 0016 a 60/60'F, when compared to the su 1 i er ' certi fi cate or a absolute speci fi c gravi ty a 60/60c3F of greater than or equal to 0. 83 but less than r equal to 0. 89 or an API gr a i ty at 60 F of greater than or equal to 27 degrees but less han or equal to 39 degrees, A ki nemati c vi scosi ty at 40'C of g ater than or equal to

1. 9 centi stokes, but less than or eq al to 4. 1 centi stokes, i f gravity was not determined by comp i son with the suppl i er' certi ficati on, The di sel generator start (10'econds) from ambient conditio shall be per-form d at least once per 184 days in these surveillance tests ~ Al 1 other en-gi starts for the pur pose of thi s surveillance testi ng may be receded by an e gine prel ube period and/or other warmup procedures recommended b the manu-acturer so that mechanical stress and wear on the di esel engine is inimi zed.

PALO VERDE - VRIT 1 ~'y) I qp~3/4 8"3) Q w/ )

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ELECTRICAL POWER SYSTEMS RVEILLANCE RE UIREMENTS (Continued c) A flash point equal to or greater than 125 F, and d) A clear and bright appearance with proper col , when tested in accordance with ASTM D4176-82.

2. verifying within 31 days of obtaining the mple that the o er properties specified in Table 1 of AST D975-81 are met whe tested in accordance with ASTM D975-8 except that the anal is for sulfur may be performed in cordance with ASTM D1552- or ASTM D2622-82.

d. At least once e ery 31 days by obtaining sample of fuel oil from the storage tank in accordance with AS 02276-78, and verifying that total particu te contamination i less than 10 mg/liter when checked in accordan with ASTM D227 78, Method A.

PALO VEROE -,UNIT,L +P, ~~~,3/4-8-..3a +>>Pi r~

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ELECTRICAL POWER SYSTEM URVEILLANCE RE UIREHENTS Continued)

5. The other properties specified in Table 1 of ASTH-0975-1977 and Regulatory Guide 1. 137, Revision 1, October 1979, Posi-tion 2.a., when tested in accordance with ASTM-0975-1977; analysis shall be completed within 14 days after. obtaini the

'il.

sample but may be performed after the addition of new f el

d. At lea once per 18 months during shutdown by:

1. Subje ting the diesel to an inspection in accor ance'with proced es prepared in conjunction with its m nufacturer's recommen ations for this class of standby s vice.

2. Verifying e generator capability to re ct a single largest load of grea er than or equal to 839 kM (Train 8 AFW pump) or 696 kM (Train HPSI pump) while main ining voltage at 4160 + 420 volt and frequency at 60 + 1.2 Hz.

3. Verifying the gene ator capabilit to reject a load of 5500 kM without tri ing. The nerator voltage shall not exceed 6240 volts du 'ng and f lowing the load rejection.

Simulating a loss-of-of it power by. itself, and:

a) Verifying deenergiz on of the emergency busses and load shedding from the mer ncy busses.

b) Verifying the d esel star s on the auto-start signal, energizes the mergency bu es with permanently connected loads within 0 seconds, ene gizes the auto-connected shutdown lo ds through the lo d sequencer and operates for greater t n or equal. to 5-+in tes.while its generator is loaded w' the shutdown loads. After energization, the steady tate voltage and frequen of the emergency busses shall e maintained at 4160 + 420 olts and 60 + 1.2/-0.3 Hz duri g this test.

5. Verify' that on an ESF actuation test si pal (without loss-of-offsi e power) the diesel generator starts b the auto-start sig 1 and operates on standby for greater.th n or equal to 5 inutes. The steady-state generator voltage and frequency all be 4160 + 420 volts and 60 + 1. 2 Hz withi 10 seconds after the auto-start signal; the generator voltag and frequency shall be maintained within these limits ring this test.

6. Simulating a loss-of-offsite power in conjunction with n ESF actuation test signal, and PALO VERDE - UNIT 1 3/4 8-4 2 Di!'0 7C/4, t - ~3 i'.3 ( U5iL 7

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Q uuu $ u .H,A u V uu,u u ELECTRICAL POMER SYSTEM SURVEILLANCE RE UIREMENTS Continued) a) Verifying deenergization of the emergency busses and load shedding from the emergency busses.

) Verifying the diesel starts on the auto-start signal, energizes the emergency busses with permanently conne ed loads within 10 seconds, energizes the auto-connec d ergency (accident) loads through the load seque er and o rates for greater than or equal to 5 minutes hile its gen ator is loaded with the emergency loads. After ener-gizat on, the steady-state voltage and freq ncy of the emerge y busses shall be maintained at 4 + 420 volts and 60 + .2/-0.3 Hz during this test.

c) Verifying t t all automatic diesel nerator trips, except engine overspeed, generator fferential, and low lube oil press e, are automatica y bypassed upon loss of voltage on the e ergency bus, up n a safety injection actuation signal upon AFAS.

7. Verifying the diesel gene tor o crates for at least 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

During the first 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> o thi test, the diesel generator shall be loaded to greater t n or equal to 6050 kM and during the remaining 22 hours2.546296e-4 days <br />0.00611 hours <br />3.637566e-5 weeks <br />8.371e-6 months <br /> of. t test, the diesel generator shall voltage and frequency sh 1 be '0 be loaded to greater than r e al to 5500 kM. The generator within 10 seconds after he start signal; the steady-state 2 420 volts and 60 + 1.2 Hz generator voltage and requency sh 11 be maintained at 4160 ~ 420 volts and 60 + 1.2/- .3 Hz during t 's test. Within 5 minutes

'after completing t s 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> test, p rform Surveillance Requirement 4.8. 1 . 2d. 6.b.

8. Ver i fying that he auto-connected loads t each diesel generator do ot exceed the continuous rat ng of 5500 kM.

9. Verifying . he diesel generator's capability a) Sy chronize with the offsite power source hile the enerator is loaded with its emergency loa upon a simulated restoration of offsite power, Transfer its loads to the offsite power source, and c) Be restored to its standby (not running) statu..

0. Verifying that with the diesel generator operating in a test mode (connected to its bus), a simulated safety injectio signal overrides the test mode by (1) returning the diese generator to standby operation (running unloaded). and (2) automatically energizes the emergency loads with offsit power.

PALO VERDE - UNIT 1 3/4 8-5 p-~N ~wr.,l," -.=.'0 V,',3~$ :,'%

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ELECTRICAL POWER SYSTEMS SURVEILLANCE RE UIREMENTS (Continued

11. Verifying that the fuel transfer pump transfers fuel from each fuel storage tank to the day tank of each diesel via the installed cross connection lines.

12. Verifying that the automatic load sequence timer is OPERABLE with the interval between each load block within + 1 se ond of its design interval.

Verifying that the following diesel generator lock t features prevent diesel generator starting only when requ ed:

) (turning gear engaged) b (emergency stop)

e. At least nce per 10 years or after any modifi ations which could affect die l generator interdependence by s rting the diesel generators s multaneously, during shutdown and verifying that the diesel genera rs accelerate to at least 00 rpm (steady-state generator volta e and frequency of 4160 + 420 volts and 60 + 1.2 Hz) in less than or qual to 10 seconds.

f. At least once per 0 years by:

1. Draining each f 1 oil stor e tank, removing the accumulated sediment and clea ing the ank using a sodium hypochlorite solution or the eq ivale , and

2. Performing a pressur est of those portions of the 'diesel fuel oil system desi d to Section III, subsection ND of the ASME Code at a test pre sure equal to 110Ã of the system design pressure.

4.8. 1. 1.3 ~Re orts - All diese generator failures', valid or nonvalid, shall be reported to the Commissio within 30 da in a Special Report pursuant to Specification 6.9.2. Repor s of diesel gene ator failures shall include the information recommended i Regulatory Positio C.3.b of Regulatory Guide 1. 108, Revision 1, August 1977. f the number of fail res in the last 100 valid tests (on a per nuclear unit asis) is greater than o equal to 7, the report shall be supplemented .to in ude the additional .informa ion recommended in Regulatory Position C.3.b of Re ulatory Guide 1. 108, Revision 1, August 1977.

PALO VERDE - UNIT 1 3/4 8-6

'TABLE 4.8-1 DIESEL GENERATOR TEST SCHEDULE N ber of Failures In Las 100 Valid Tests. ~

At least once per 31 days At least once er 14 da s

't least ce per 7 days At lea once per 3 days Criteria for determining umber of failures an number of valid tests shall be in accordance wit Regulatory Positi C.2.e of Regulatory Guide l. 108, Revision 1, Au st 1977, where he last 100 tests are determined on a per nuclear u it basis. F r the purposes of this test schedule, only valid test conducte after the Operating License issuance date shall be included- n the omputation of the "last 100 valid tests". Entry inta this te s edule shall be made at the 31 day test frequency.

PALO VERDE " UNIT 1 3/4 8-7

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..O~.)T /@~if;,!3 RY;U,i3 3/4.8 ELECTRICAL POMER SYSTEMS 3/4.8.1 A.C. SOURCES OPERATING LIMITING CONDITION FOR OPERATION 3.8.l.l As a minimum, the following A.C. electrical power sources shall be OPERABLE

a. Two physically independent circuits from the offsite transmission network to the switchyard and two physically independent circuits from the switchyard to the onsite Class lE distribution system, and

b. Two separate and independent diesel generators, each with:

l. Separate day fuel tank with a minimum level of 2.75 feet (550 gallons of fuel), and

2. A separate fuel storage system with a minimum level of 80K (71,500 gallons of fuel), and

3. A separate fuel transfer pump.

APPLICABILITY: MODES 1, 2, 3 and 4.

ACTION:

a With one offsite circuit of 3.8.1.1.a inoperable, demonstrate the OPERABILITY of the remaining A.C. sources by performing Surveillance Requi,rements 4.8. 1. 1. l.a within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> and at least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter. If either EDG has not been successfully tested within the past 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, demonstr ate its OPERABILITY by performing Surveillance Requirement 4.8. 1. 1.2.a.4 separately for each such EDG, unless it is already operating, within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. Restore the offsite circuit to OPERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOMN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

b. With one emergency diesel generator of 3.8.1.l.b inoperable, demon-strate the OPERABILITY of the A.C. offsite sources by performing Surveillance Requirement 4.8.1.1. l.a within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> and at least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter; and if the EDG became inoperable due to any cause other than preplanned preventative maintenance or testing, demonstrate the OPERABILITY of the remaining OPERABLE EDG by per-forming Surveillance Requirement 4.8. 1.1.2.a.4 within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />";

restore the diesel generator to OPERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

"This test is required to be completed regardless of when the inoperable EDG is restored to OPERABILITY.

PALO VERDE - UNIT g I 3/4 8-1 CC) IVI  %(~ll..'I i ) 'V'f ! ]RlFlP

ELECTRICAL POWER SYSTEMS LIMITING CONDITION FOR OPERATION (Continued)

ACTION (Continued)

c. With one offsite circuit and one diesel generator inoperable, demon-strate the OPERABILITY of the remaininq A.C. sources by performing Surveillance Requirement 4.8. 1. l. l.a within one hour and at least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter; and if the EDG became inoperable due to any cause other than preplanned preventative maintenance or testing, demonstrate the OPERABILITY of the remaining OPERABLE EDG by performing Surveillance Requirement 4.8. 1. 1. 2. a. 4, unless it is already operating, within 8 hour9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />s*; restore one of the inoperable sources to OPERABLE status within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOMN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />. Restore the other A.C. power source (offsite circuit or diesel generator) to OPERABLE status in accordance with the provisions of Section 3.8. 1. 1 Action Statement "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 OPERABILITY per Surveillance Requirement 4.8. 1. 1.2.a.4 performed under this Action Statement for an OPERABLE diesel or a restored to OPERABLE diesel satisfies the EDG test requirement of Action Statement "a" or "b".

d. With two of the required offsite A.C. circuits inoperable, demon-strate the OPERABILITY of two diesel generators by sequentially performing Surveillance Requirement 4.8. 1. 1.2.a.4 on both diesels within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />, unless the diesel qenerators are already operating; restore one of the inoperable offsite sources to OPERABLE status within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />. Following restoration of one offsite source, follow Action Statement "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 OPERABILITY per Surveillance Requirement 4.8. 1. 1.2.a.4 performed under this Action Statement for the OPERABLE diesels satisfies the EDG test requirement of Action Statement "a".

e. Mith two of the above required diesel generators inoperable, demon-strate the OPERABILITY of two offsite A.C. circuits by performing Surveillance Requirement 4.8. 1. 1. 1.a within one hour and at least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter; restore one of the inoperable diesel generators to OPERABLE status within 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />. Following restoration of one diesel generator unit, follow Action Statement "b" with the time requirement of that Action Statement based on the time of initial loss of the remaining inoperable diesel generator. A successful test of diesel OPERABILITY per Surveillance Requirement 4.8. l. 1.2.a.4 performed under this Action Statement for a restored to OPERABLE diesel satisfies the EDG test requirement of Action Statement "b".

• This test is required to be completed regardless of when the inoperable EDG is restored to OPERABILITY.

PALO VEROE - UNIT f/ 3/A 8-2

ELECTRICAL POWER SYSTEMS SURVEILLANCE RE UIREMENTS 4.8. 1. 1. 1 Each of the above required physically independent circuits between the offsite transmission network and the onsite Class 1E distribution system shall be:

Determined OPERABLE at least once per 7 days by verifying correct breaker alignment indicating power availability Demonstrated OPERABLE at least once per 18 months during shutdown by manually transferring the onsite Class lE power supply from the normal circuit to the alternate circuit.

4.8. 1. 1.2 Each diesel generator shall be demonstrated OPERABLE:

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

1. Verifying the fuel level in the day tank.

2. Verifying the fuel level in the fuel storage tank.

3. Verifying the fuel transfer pump can be started and transfers fuel from the storage system to the day tank.

4. Verifying the diesel generator can start*" and accelerate to generator voltage and'frequency at 4160 + 420 volts and 60 +

1.2 Hz in less than or equal to 10 seconds. Subsequently, the generator shall be manually synchronized to its appropriate bus and gradually loaded*~ to an indicated 5200-5400 kW*"~ and operates for at least 60 minutes. The diesel generator shall be started for this test*~** using one of the following signals on a STAGGERED TEST BASIS:

a) Manual b) Simulated loss of offsite power by itself.

c) Simulated loss of offsite power in conjunction with an ESF actuation test signal.

d) An ESF actuation test signal by itself.

5. Verifying the diesel generator is aligned to provide standby power to the associated emergency busses.

This test shall be conducted in accordance with the manufacturer's recommen-dations regarding engine prelube and warmup procedures, and as applicable regarding loading recommendations.

'~"This band is meant as guidance to avoid routine overloading of the engine.

Loads in excess of this band for special testing under direct monitoring of the manufacturer or momentary variations due to changing bus loads shall not invalidate the test.

"~~~Until the first refueling outage, the diesel generator shall be test started only manual ly.

PALO VERDE - UNIT g I 3/4 8-3

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ELECTRICAL PQWER SYSTEM SURVEILLANCE RE UIREHENTS (Continued)

4. 8. 1. 1. 2 (Continued)

b. At least once per 92 days by verifying that a sample of diesel fuel from the fuel storage tank obtained in accordance with ASTH-04176-82, is within the acceptable limits specified in Table 1 of ASTH D975-81 when checked for viscosity, water and sediment.

C. At least once per 184 days the diesel generator shall be started""

and accelerated to generator .voltage and frequency at 4160 + 420 volts and 60 + 1.2 Hz in less than or equal to 10 seconds. The generator voltage and frequency shall be 4160 + 420 volts and 60 + 1.2 Hz within 10 seconds after the start signal. The generator shall be manually synchronized to its appropriate emergency bus, loaded to an indicated 520Q-5400""" kM in less than or equal to 60 seconds, and operate for at least 60 minutes.

This test, if it is performed so it coincides with the testing required by Surveillance Requirement 4. 8. 1. 1. 2. a. 4, may also serve to concurrently meet those requirements as well.

d. At least once per 18 months during shutdown by:

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. regenerator Verifying the generator capability to reject a single largest load of greater than or equal to 839 kW (Train B AFM pump) for emergency diesel generator B or 696 kM for emergency diesel A (Train A HPSI pump) while maintaining voltage at 416Q + 420 volts and frequency at 60 f 1.2 Hz.

3. Verifying that the automatic load sequencers are OPERABLE with t

the interval between each load block within 1 second of its design interval.

4. Simulating a loss of offsite power by itself, and:

a) Verifying deenergization 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 shut-down loads through the load sequencer and operates for greater than or equal to 5 minutes while its generator is T

dations regarding engine prelube and warmup procedures, and as applicable regarding loading recommendations.

"""This band is meant as guidance to avoid routine overloading of the engine.

Loads in excess of this band for special testing under direct monitoring of the manufacturer or momentary variations due to changing bus loads shall not invalidate the test.

PALO YEROE - UNIT P' 3/4 8 4 T:AIMYRQ!I,ll,. 6 iWY 'I.1%IFW

C~~OgjfTRQll.~L.=Q~ 3 ~f',Lzg,R ELECTRICAL POMER SYSTEM SURVEILLANCE RE UIREMENTS (Continued) 4.8. 1. 1. 2 (Continued) loaded with the shutdown loads. After energization of these loads, the steady state voltage and frequency shall be maintained at 4160 t 420 volts and 60 + 1.2/"0.3 Hz.

5. Verifying that on an ESF actuation test signal (without loss of power) the diese'l generator starts" on the auto-start signal and operates on standby for greater than or equal to 5 minutes.

6. Simulating a loss-of-offsite power in conjunction with an ESF actuation 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 the load sequencer, and operates for greater than or equal to 5 minutes and maintains the steady-state voltage and frequency at 4160 +

420 volts and 60 + 1.2/-0.3 Hz.

c) Verifying that all automatic diesel generator trips, except engine overspeed, generator differential, and low lube oil pressure, are automatically bypassed upon loss of voltage on the emergency bus, upon a safety injection actuation signal or upon AFAS.

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

During the first 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> of this test, the diesel generator shall be loaded to an indicated 5800-6000 kM"" and during the remaining 22 hours2.546296e-4 days <br />0.00611 hours <br />3.637566e-5 weeks <br />8.371e-6 months <br /> of this test, the diesel generator shall be loaded to an indicated 5200-5400 kM"". Within 5 minutes after completing this 24-hour test, perform Surveillance Require-ment 4. 8.1.1. 2. d. 6. b)."""

ll dations hill regarding ddl engine prelube d lhh and warmup procedures, f

and as applicable regarding loading recommendations.

""This band is meant as guidance to avoid routine overloading of the engine.

Loads in excess of this band, for special testing under direct monitoring of the manufacturer or momentary variations due to changing bus loads shall not invalidate the test.

""~If Specification 4.4.1.1.2.d.6.b) is not satisfactorily completed, it is not necessary to repeat the preceding 24-hour test. Instead, the diesel generator may be operated at 5200-5400 kM"" for 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> or until operating temperature has stabilized.

PALO VERDE - UNIT g' 3l4 8-5

( ~) fjjllpip(Q) II lPQ 9",I'l IKFlW

ELECTRICAL POWER SYSTEMS SURVEILLANCE RE UIREMENTS (Continued)

8. Verifying that the auto-connected loads to each diesel generator do not exceed the continuous rating of 5500 kW.

9. Verifying the diesel generator's capability to:

a). Synchronize with the offsite power source while the generator is loaded with its emergency loads upon a simulated restoration of offsite power, b) Transfer its loads to the offsite power source, and c) Proceed through its shutdown sequence.

10. Verifying that the following diesel generator lockout features prevent diesel generator starting only when required:

a) turning gear engaged b) emergency stop

e. At least once per 10 years or after any modifications which could affect diesel generator interdependence by starting*" both diesel generators simultaneously, during shutdown, and verifying that both diesel generators accelerate to generator voltage and frequency at 4160 + 420 volts and 60 k 1.2 Hz in less than or equal to 10 seconds.

4.8. 1. 1.3 ~Re orts - All diesel generator failures, valid or nonvalid, shall be reported to the Commission within 30 days in a Special Report 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 fai lures in the last 100 valid tests (on a per nuclear unit basis) 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.

""This test shall be conducted in accordance with the manufacturer's recommen-dations regarding engine prelube and warmup procedures, and as applicable regarding loading recommendations.

PALO VERDE " UNIT fl 3/4 8-6 I'QXP"'al(~] ~ "0) /~i 3 l 3C',g'Q

'1 ~ '

TABLE 4. 8" 1 DIESEL GENERATOR TEST SCHEDULE Number of Failures Number of Failures In in Last 100 Valid Last 20 Valid Tests" Tests" Test Fre uenc g4 Once per 31 days

)5 Once per 7 days Cr)teria 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, but determined on a per diesel generator basis.

For the purposes of determing the required test frequency, the previous test failure count may be reduced to zero if a complete diesel overhaul to like-new conditions is completed, provided that the overhaul including

'yreliability criterion shallif appropriate post-maintenance operation and testing, is specifically approved the manufacturer and acceptable reliability has been demonstrated.

be the successful completion of 14 consecutive The tests in a single series. Ten of these tests shall be in accordance with Surveillance Requirement 4. 8. 1. 1. 2. a. 4; four tests, in accordance with Surveillance Requirement 4. 8. 1. 1. 2. c. If this criterion is not satisfied during the first series of tests, any alternate criterion to be used to transvalue the failure count to zero requires NRC approval.

""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.

PALO VERDE - UNIT g I 3/4 8"7

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I 1,

ELECTRICAL POWER SYSTEMS A.C. SOURCES SHUTDOWN 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 1E distribution system, and

b. One diesel generator with:

1. Day tank with a minimum level of 2.75 feet (550 gallons of fuel),

2. A fuel storage system with a minimum level of BOX (71,500 gallons of fuel), and

3. A fuel transfer pump.

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'rradiated fuel, or crane operation 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 RE UIREMENTS 4.8.1.2 The above required A.C. electrical power sources shall be demonstrated OPERABLE by the performance of each of the Surveillance Requirements of 4.8.1.1.1, 4.8.1.1.2, and 4.8.1.1.3.

PALO VERDE - UNIT / 3/4 8-8 g