Text

Amends 126 & 124 to Licenses DPR-80 & DPR-82,respectively, Revising Combined TS for Plant Re Change of Surveillance Frequencies from at Least Once Every 18 Months to at Least Once Per Refueling Interval for Slave Relays
	ML20249B602
Person / Time
Site:	Diablo Canyon
Issue date:	06/05/1998
From:	Steven Bloom; NRC (Affiliation Not Assigned)
To:	;
Shared Package
ML20249B603	List: ML20249B602; ML20249B604;
References
	NUDOCS 9806230363
	Download: ML20249B602 (22)
	v • d • e

t*n cee

(

p

'4 UNITED STATES j

NUCLEAR REGULATORY COMMISSION g

WASHINGTON, D.C. 30646-0001 o%...../

PACIFIC GAS AND Ft ECTRIC COMPANY DOCKET NO. 50-275 DIABLO CANYON NUCI FAR POWER PLANT. UNIT NO.1 l

AMENDMENT TO FACill1Y OPERATING LICENSE Amendment No. 126 License No. DPR-80 1.

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

A.

The application for amendment by Pacific Gas and Electric Company (the licensee) dated February 14,1997, as supp!emented by letters dated October 9, 1997, March 31,1998, and April 15,1998, complies with the standards and requirements of the Atomic Energy Act of 1954, as amended (the Act), and the Commission's regulations set forth in 10 CFR Chapter I; B.

The facility will operate in mnformity with the application, the provisions of the Act, and the rules and regulations of the Commission; C.-

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

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

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

2.

Accordingly, the license is amended by changes to the Techn: cal 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:

i j

9806230363 990605 PDR ADOCK 050 25 a

p

\\

2-(2)

Technical Specifications The Technical Specifications contained in Appendix A and the Environmental Protection Plan contained in Appendix B, as revised through Amendment No.126, are hereby incorporated in the license. Pacific Gas and Electric Company shall operate the facility in accordance with the Technical Specifications and the Environmental Pichi Plan, except where otherwise stated in specific license conditions.

3.

This license amendment is effectivo as of its date of issuance to be implemented within 90 days of the date of issuance.

FOR THE NUCLEAR REGULATORY COMMISSION l

Steven D. Bloom, Project Manager

. Project Directorate IV-2 Division of Reactor Projects lil/IV Office of Nuclear Reactor Regulation

Attachment:

Changes to the Technical Specifications Date ofissuance:

June 5, 1998

UNITED STATES g

g j

NUCLEAR REGULATORY COMMISSION WASNINGTON, D.C. 3000HW01

%,... j&

PACIFIC GAS AND ELECTRIC COMPANY DOCKET NO. 50-323 DIABLO CANYON NUCI FA'4 POWER PLANT. UNIT NO. 2 AMENDMENT TO FACILITY OPERATING LICENSE Amendment No.124 License No. DPR-82 1.

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

A.

The application for amendment by.*acific Gas and Electric Company (the licensee) dated February 14,1997, as supplemented by letters dated October 9, 1997, March 31,1998, and April 15,1998, complies with the standards and

)

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

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

There is reasonable assurance (i) that the activities authorized by 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 E.

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

2.

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

l

.. (2)

Technical Specifications The Technical Spedhuis contained in Appendix A and the Environmental Protection Plan contained in Appendix B, as revised through Amendment No.124, are hereby incorporated in the license. Pacife Gas and Electric Company shall operate the facility in accordance with the Technical Specifications and the Environmental Protection Plan, except where otherwise stated in specife license conditions.

3.

This license amendment is effective as of its date of issuance to be implemented within 90 days of the date ofissuance.

FOR THE NUCLEAR REGULATORY COMMISSION eDL,:

^

teven D. Bloom, Project Manager Project Directorate IV-2 Division of Reactor Projects lil/lV Office of Nuclear Reactor Regulation

Attachment:

Changes to the Technical Specifications Date of issuance: June 5, 1998 1

i l

u l

l l

l i

ATTACHMENTTO LICENSE AMENDMENTS AMENDMENT NO.126 TO FACILITY OPERATING LICENSE NO. DPR-80 AND AMENDMENT NO.124 TO FACILITY OPERATING LICENSE NO. DPR-82 DOCKET NOS. 50-275 AND 50 M'4 Revise Appendix A Technical Specifications by removing the pages identifed below and inserting the enclosed pages. The revised pages are identified by Amendment number and contain marginal lines indicating the areas of change. The corresponding overleaf pages are also provided to maintain document completeness.

REMOVE INSERT 3/4 3-32 3/4 3-32 3/4 3-33 3/4 3-33 3/4 3-34 3/4 3-34 3/44-9 3/44-9 3/4 4-10a 3/4 4-10a 3/4 8-3 3/4 8-3 3/4 8-4 3/4 8-4 3/4 8-6 3/4 8-6 3/4 8-16 3/4 8-16 B 3/4 8-2 B 3/4 8-2 B 3/4 8-3 B 3/4 8-3 i

e

TABLE 3.31ICantinued)

TABLE ETATims (1) Diesel generator starting delay not included because offsite poor available.

(2) hotation deleted.

l (3) Diesel generator starting and loading de1Rys included.

(4) Diesel generstar starting delay not included because offsite peer is eveilele.

Response time limit includes apening of valves to este11sh $1 of discherse pressure for centrifusel chorgine pumps (dere anolwth and attaiment icable). Iowen-tial transfer of ne pump suction free the VCT to the 287 (EST velves spen.

then VCT valves close is included.

(5) Diesel generster starting and sequence lasting delays included. Offsite pouer is not ave 11dle. Response time limit includes spaning of valves to estelish $1 path and attaiment of discharge pressure for centrifugal che

$spential transfer of che ng pump suction free the VCT to the

(

valves spen, then VCT valves close is included.

I (6).The anximum response tier of 48.5 seconds is the time free when the containment pressure exceeds the Nigh Nigh Setpoint until the spray esp is started and the discharge valve travels to the fully open position assuming off. site powr is not available. The time of 48.5 seconds includes the 2s.second maxima delay related to ESF loading seguence. Spray riser piping fill time is not included. The 80-second anximum spray delay tier does not include the time from LOCA start to *P*

signal.

(7) Diesel generator starting and seguence loading delays included. Sequential trans-fer of chargin valves close) g puso suction from the VCT to the RW5T (Rid 5T valves open, then VCT is not included. Response time limit includes opening of valves to establish SI flow path and attainment of dischstge pressdre for centrifugal charging peps. 51. and met pumps (where applicable).

(8) Does not include Trip Time Delays. Response times include the transmitters. Eagle-l 21 Process Protection cabinets. Solid State Protection Systes cabinets and actua-l tion devices only. This reflects the response times necessary for TEmnt POWER in l

excess of 502 RTP.

I i

DIABLD CANYON WIT 51 & 2 3/4 3 31 Amendment Nos. 30 8 40. M & M, M8B

EY ALS A.

4 A.

A.

A..

A.

VAT 4

2 2

LEE SRT N R N

N N

N R N

R.

EY

)

TAT

)

A.

1 A.

SLS A.

1

(

AEE

(

MRT N M N

N N

N M N

NO I

T T

NS A

OE T

IT N

TAC E

UI

)

A.

)

A.

1 A.

U TG A.

1

(

R CO

(

T AL N M N

N N

N M N

SN I

G M

N I -

ES TT TE L

SN ACAA PUIRNT SM ITVEOS 4

A.

4 A.

A.

YE RCEPIE 2

2 NR TADOTT R N N

N N

R N N

E 2

OI IU 3

TQ AE L

4 UR E

L T

NAA E

CE NRNT L

AC AEOS A.

A.

B N

HPIE A

SA COTT N N 0 Q 0

N N Q

T EL Ul L

N TE E

O AEW N - I A.

4 FU NIT ALA A.

A.

4 4

4 A.

S HAR 2

2 2

2 Y

T CCB N N R

R R

N N R

E F

A L

S E

NK D

NC E

AE A.

A.

R HH E

CC N N S

S -

S N N S

E N

I p

t G

i tn s

N r

ne y h t

c E

T en a g w

n i

mo l

i o

e g

rtnp e H L

d o

orim R

i L

taao e

e c

s e

cttC nn r r

n ny r

aSn oo u u

i oa u

e od n ii s s

o n

il s

R

.C n o tt s

s c

o te s

i aa e e

(

i aR e

( n.a o

t uu r r

t u

r a tt P P

y a tn P

.i s ntrs i cc w a i co oaot t AA t r

o r) t Ai t

ilti) i n

e eL pl i t

n toanr n cd e z

n-Sa n ca eh T

csrUe I

in m i

ie nI iu mg I

eI e t

ta n r D Lr tg tt ni N

j nra l

a i

u E u

nil ac iH U

nreeW a mc a s T ms es a mA a-I eGl u

oi t s E as m u o th L

t og n tg n e L ee nI n td ng A

yal on a uo o r E tr iS a un oi N

tweCi M AL C P D SP a M Aa CH O

eds l

th I

feeno nt oi T

aeiao C

SFDFC a b c d e f

Cwa b c

N U

F 1

2 EB5 oE{ ' 5w[

m wy Dl

<', g.y;G;

$e m. g==ka n.i7,"5 o

D

[

ka noi

;. M ;,

o l

u u

q qe e

R EY R

VAT ALS A. 4 A. 4 A.

4 A.

2 e

2 2

e LEE SRT NR c

NR N

R c

N n

n a

a l

l R

l l

i EY i

.)

e

.)

)

e TAT 1

v A.

A. 1 A.

SLS A. 1 v

(

r AEE

(

r MRT NM u

NM N

M u

N S

S N

O n

n I

T o

o T

NS i

i A

OE t

t T

IT c

c N

T e

e E

AC j

j

.)

)

M UI

.)

n n

A.

A. 1 A.

1 U

TG A. 1 I

I R

CO

(

T AL NM NM N

M N

y y

S t

t N

e e

I f

f G

M N

a a

I S

S ES TE L

)

TT l

l ACAA l

d SN PUIRNT l

A.

e YE 4 A.

A.

a u

SM ITVEOS 4 A.

a 2

RCEPIE 2

i NR TADOTT RN r

RN N

N r

N n

E o

o t

OI f

f n

I U o

TQ e

e C

AE L

v v

UR E

L o

o

(

T NAA b

b 2

CE NRNT A.

a a

AC AEOS A. A.

A. A.

3 N

HPIE Q

NN Q

N 1

SA COTT NN 1

4 EL RL m

m E

UI L

N e

e L

TE E

O t

t B

AV I

N - I I

A ER NIT T

FU ALA A. A.

e A. A.

4 A.

e 4

S HAR e

2 e

2 Y

CCB NN S

NN R

N S

R TE FA L

S E

NK D

NC E

AE A. A.

A. A.

A.

R HH E

CC NN NN S

N S

E N

I n

G oh N

ig E

ti nn nn n

nn aH oo oo ho oo l

ii ii gi i i i n tt n

tt it tt nto) n aa on aa Ha aa oniB o

uu io uu l

uu iet4 ni tt ti tt hi tt tVa4 ot cc ct cc gt cc c

i ia AA ea AA tin AA etdd tl jl nHe jnan ao cd no cd e - V cd neRa l s in I s in me in I m oI ta I

ta nrt ta d

ntA s

l a sy l a siun a

s e yi s 4 amcyt amcyasenmcyttau4 T

I "A u o i a e B" uoiatsmooiaeeta n t gl f n t gl n e n i t gl l f n h M I

t" auoea" auoeorituoeeaoxR N

n U

eeMALRSeMALRCPaaALRDSCE(

ms s

tl L

na a

no A

ih))

)h))

)

os)

)))

N aP12 3P12 3

CI1 234 O

t I

n T

o C

Ca b

c NU F

3 g ; i ::: i.

iiMi :

iZ 3E5 Ei. g5 = ~

w* E" g: '

!i iii ji t s

t g: "

1 i

i1i ji$

iI

EY 4

A.

4 VAT ALS A. 2 A.

A. A.

4 2

2 LEE SRT NR N

NN R

N N R REY A.

A. A.

U A.

A. "

)

TAT A. ")

)

SLS AEE MRT NM N

NN M

N N M NO T

I T

NS A

OE T

IT N

T E

AC A.

A. A.

A..

A. "

)

M UI A.")

)

U TG R

CO T

AL NM N

NN M

N N M SN I

G M

N I

ES

)

TT TE - L d

SN ACAA A.

A. A.

A.

PUIRNT e

YE u

SM ITVEOS 4 A.

RCEPIE 2

i NR TADOTT RN N

NN N

N R N n

E t

OI n

IU o

TQ C

AE L

UR E - L

(

T NAA 2

CE NRNT A.

A.

AC AEOS A. A.

A.

3 N

HPIE SA COTT NN 0

00 N

0 N N 4

EL RL E

UI L

TE L

N E

O B

AV N

I A

ER T

FU

- ALA A. A.

4 44 A.

4 A.

A..

NIT Y

HAR 2

22 2

S T

CCB NN R

RR N

R N N E

FA L

S E

NK D

NC E

AE A. A.

A.

R HH E

CC NN S

SS N

S N N E

N I

G s

s N

c y

y E

a a

ig w

l l

o o

r e

e L

L e

Rr R r s e t

e e

ny r ee a

nnt nn t

oa u r nh w ooa oo a il s

uigd iiW ii W n

te s sLi e tt tt o

aR e s

H e aarh r

aa r i

u r

em-F uuog e

uu o t

tn P r ae ttti t

tt tw nv a

co P et d ccaH a

cc ao ee pr l

Ai t ta n AAr -

w AA rL GL o

t n

eSR a eh d

e-s ca eh n cd n g e

cd nw mr Lo T

I iu mgi ee p inei e

in eo ae taGH F

ta GL et S I

tt ni L vr i N

el ac iH iu r a

l a

mts Tn mcml y

a mc ml SW Rt U

n amA a -

i uo th aas o oiae r

u oi ae L

L ntd n g e ge ei t ge v a

n tg ev A

a un oi t er nt uote i

a uo te l

M AL Sl N

mMAa CHSNP i a ALSL O

a bl i

ro x

I e

u T

t us C

S ab c

d e TI a b

A a b c

N U

F 4

5 6

o oI 3 2

,A ch_'gggAn" E&5 d*E ' Eg ~ e r wE YW cA

' gg E n" c{ Ij ! ;5 :(

I3 2

<{

ij! ;5 :(

REACTOR COOLANT SYSTEM 3/4.4.3 PRESSURIZER LIMITING CONDITION FOR DEPRATION 3.4.3 The pressurizer shall be OPERABLE with a water volume of less than or equal to 1600 cubic feet and two groups of pressurizer heaters each having a capacity of at least 150 kW.

APPLICABILITY:

MODES 1, 2, and 3.

ACTION:

a.

With one group of pressurizer heaters inoperable. restore at least two groups 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 HOT SHUTDOWN within the following 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months .

b.

With the pressurizer otherwise inoperable be in at least HOT STANDBY with the Reactor trip breakers o)en within 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in HOT SHUTDOWN within the following 6 1ours.

SURVEILLANCE REQUIREMENTS 4.4.3.1 The pressurizer water volume shall be determined to be within its limit at least once per 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months .

4.4.3.2 The capacity of each of the above required groups of pressurizer heaters'shall be verified by measuring heater group power at least once each REFUELING INTERVAL.

4.4.3.3 The emergency power supply for the )ressurizer heaters shall be demonstrated OPERABLE at least.once each REFJELING INTERVAL by transferring power from the normal to the emergency power supply and energizing the heaters.

DIABLO CANYON - UNITS 1 & 2 3/4 4-9 Unit 1 - Amendment No. 448,126 Unit 2 - Amendment No. 4M,124 j.-

l

REACTOR COOLANT SYSTEM 3/4.4.4 RELIEF VALVES-LIMITING CONDITION FOR OPERATION 3.4.4 All power-operated relief valves (PORVs)-and their associated block valves shall be DPERABLE.

APPLICABILITY:

MODES 1, 2, and 3.

ACIIDN:

a.

With one or more PORV(s) inoperable because of excessive seat leak-age, within I hour either restore the PDRV(s) to OPERABLE status or close the associated block valve (s) and maintain power to the block valve (s), otherwise, be in at least NOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in HOT SHUTDOWN within the following 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months .

b.

With one or more PORV(s) inoperable due to causes other than exces-sive seat leakage, within I hour either restore the PORV(s) tb OPERABLE status or close the associated block valve (s) and remove power from the block valve (s), and I

1.

With only one Class 1 PORV OPERABLE, restore at least a total of two Class 1 PORVs to OPERABLE status within the following 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 HOT SHUTDOWN within the following 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months , or 2.

With no Class 1 PORVs OPERABLE, restore at least one Class 1 PORV to OPERABLE status within I hour and follow ACTION b.1, above, with the time requirement of that ACTION statement based on the time of initial loss of the remaining inoperable Class 1 PORV 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 HOT SHUTDOWN within the following 6, hours.

c.

With one or more block valve (s) inoperable, within I hour 1.

Restore the block valve (s) to OPERABLE status, or 2.

Close the PORV(s) and remove power from its associated sole,noid.

l Also, comply with ACTION b, as appropriate, for the isolated PORV(s).

d.

The provisions of Specification 3.0.4 are not applicable.

~DIABLO CANYON _- UNITS 1 & 2 3/4 4-10 Amendment Nos. JL& J6.

81 8 80

REACTOR COOLANT SYSTEM jyRV[ILLANCEREQUIREMENTS 4.4.4.1 In addition to the requirements of Specification 4.0.5. each PORV shall be demonstrated OPERABLE by:

Operating the PORV through one complete cycle of full travel during a.

MODES 3 or 4 with the block valves closed at least once per REFUELING INTERVAL, and b.

Performing a CHANNEL CALIBRATION of the actuation instrumentation at least once per REFUELING INTERVAL.

4.4.4.2 In addition to the requirements of Specification 4.0.5. each block

. valve shall be demonstrated OPERABLE at least once per 92 days by o)erating the valve through one com)1ete cycle of full travel unless the.blocc valve is closed in order to meet t1e requirements of ACTION b. or c. in Specification 3.4.4.

4.4.4.3 The safety-related nitrogen sup)1y for the PORVs shall be demonstrated OPERABLE at least once per REFUELING INTERVAL by:

l a.

Isolating and venting the normal air supply, and b.

Verifying that any leakage of the Class 1 Backup Nitrogen System is within its limits, and Operating the PORVs through one complete cycle of full travel.

c.

l r

DIABLO CANYON - UNITS 1 & 2 3/4 4-10a Unit 1 - Amendment 27.81.102.122.126 l

Unit 2 - Amendment 25.80.102.121.124

[

l..

I

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 j

breaker alignments, indicated power availability, and b.

Demonstrated OPERABLE at least once per REFUELING INTERVAL during l

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 connected loads and energizes the auto-connected emergency (accident) loads through sequencing timers.

i 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 +

240/-375 volts and 60 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 actuad ca test signal by itself.

All diesel generator starts for the purpose of this surveillance test may be ) receded by an engine prelube period.

Further, all surveillance tests.

wit 1 the exception of once per 184 days, may also be preceded by warmup 4

I procedures (e.g., gradual acceleration and/or gradual loading > 150 sec) as

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

DIABLO CANYON - UNITS 1 & 2 3/4 8-3 Unit 1 - Amendment .85.93.126 Unit 2 - Amendment '3.85.92.124

ELECTRICAL POWER SYSTEMS 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 tri) cutout switch is returned to the cutout position following eac1 diesel generator test.

b.

At least once per REFUELING INTERVAL during shutdown, by:

l 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 +

240/-375 volts and frequency at 60 3 Hz; l

4)

Verifying the generator capability to reject a load of greater j

than or equal to 2484 kW without tripping. The generator i

voltage shall not exceed 4580 volts during and following the load rejection:

5)

Simulating a loss of offsite power by itself, and:

f 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 )ermanently connected loads within 10 seconds, energizes tie 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 + 240/-375 volts and 60 i 1.2 Hz during this test.

DIABLO CANYON - UNITS 1 & 2 3/4 8-4 Unit 1 - Amendment ".85.93.126 Unit 2 - Amendment ';3.85.92.124

ELECTRICAL POWER SYSTIMS 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 +

240/-375 volts and 60 i 1.2 Hz within 13 seconds after the auto-start signal; the steady state generator voltage and frequency 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 + 240/-375 volts and 60 i 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 2$ hours.

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 + 240/-375 volts and 60 1 1.2 Hz within 13 seconds after the start signal. For Units i

1 and 2 Cycle 7: Within 5 minutes after completing this 24 hour2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months I

test, perform Specification 4.8.1.1.2b.5)b);*

g)

Verifying that the auto-connected loads to each diesel generator do not exceed the maximum rating of 2750 kW;

10) Verifying the ditsel generator's capability to:

For Units 1 and 2 Cycle 7:

If Specification 4.8.1.1.2b.5)b) is not I

satisfactorily completed, it is not necessary to repeat the preceding 24-hour test.

Instead the diesel generator 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.

DIABLO CANYON - UNITS 1 & 2 3/4 8-5 Unit 1 - Amendment 46,104 105 Unit 2 - Amendment 65,

ELECTRTCAL POWER SYSTEMS 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, 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 mode, connected to its bus, a simulated Safety Injection signal opens the auxiliary transformer breaker ud 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 c)

Emergency stop button actuated, or d)

Overspeed trip actuated.

c.

At least once per 10 years or after any modifications which could affect diesel generator interdependence by starting all diesel generators simultaneously, during shutdown, and verifying that all i

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 I hour by checking for and removing accumulated water from the day tank.

e.

For Units 1 and 2. Cycle 8 and after:

At least once per REFUELING INTERVAL by verifying the diesel l

generator starts and accelerates to at least 900 rpm in less than or equal to 10 seconds. The generator voltage and frequency shall be 4160 +240/-375 volts and 60 1.2 Hz within 13 seconds after the start signal. This test shall be performed within 5 minutes of shutting down the diesel generator after the diesel generator has operated for at least 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months at a load of greater than or equal to 2484 kW.

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 installed lines.

b.

At least once per 31 days by checking for and removing accumulated water from the fuel oil storage tanks-l c.

By sampling new fuel oil in accordance with ASTM-04057 prior to addition to the storage tanks and:

l 15.105{126 DIABLO CANYON - UNITS 1 & 2 3/4 8-6 Unit 1 - Amendment Unit 2 - Amendment lo.10 124 i

ELECTRICAL POWER SYSTEMS 3/4.8.3 D.C. SOURCES OPERATING LIMITING CONDITION FOR OPERATION 3.8.3.1. _ The following D.C. electrical sources shall be OPERABLE:

a.

125-volt D.C. Battery No. I and an associated full-capacity charger, b.

125-volt D.C. Battery No. 2 and an associated full-capacity charger, and-c.

125-volt D.C. Battery No. 3 and an associated full-capacity charger.

APPLICABILITY:

MODES 1, 2, 3, and 4.

ACTION:

With one of the required battery banks and/or full-capacity chargers inoperable, restore the inoperable battery bank and/or full-capacity charger 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 .

SURVEILLANCE REQUIREMENTS j

4.8.3.1 Each 125-volt battery bank and charger shall be demonstrated OPERABLE:

a.

At least once per 7 days by verifying that:

1)

The parameters in Table 4.8-3 meet the Category A limits, and 2)

The total battery terminal voltage is greater than or equal to 130-volts on float charge.

l 4

i l

)

l l

l DIABLO CANYON - UNITS 1 C 3/4 8-15 L

ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued) b.

At least once per 92 days and within 7 days after a battery discharge with D.C. bus voltage below 118 volts. or battery overcharge with D.C.

bus voltage above 145 volts, by:

1)

Verifying that the parameters in Table 4.8-3 meet the Category B limits.

2)

Verifying there is no visible corrosion at either terminals or connectors, or the connection resistance of these items is less than 150 x 10 ohm.* and 3)

Verifying that the average electrolyte temperature of 10 of the connected cells is above 60*F.

c.

At least once per REFUELING INTERVAL by verifying that:

l 1)

The cells, cell plates and battery racks show no visual indication of physical damage or abnormal deterioration.

2)

The cell-to-cell and terminal connections are clean, tight, and coated with anticorrosion material.

3)

The resistance of each cell-to,ccll and terminal connection is less than or equal to 150 x 10' ohm.* and 4)

The battery charger will supply at least 400 amperes at 130 volts for at least 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months .

d.

At least cnce per REFUELING INTERVAL. during shutdown, by verifying l

that the battery capacity is adequate to supply and maintain in OPERABLE status all of the actual and/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% of the manufacturer's rating when subjected to a performance discharge test.

This performance discharge test may be performed in lieu of the battery service test required by Specification 4.8.3.1d.: and f.

At least once per REFUELING INTERVAL. during shutdown. by giving l

performance discharge tests of battery capacity to any battery that shows signs of degradation or has reached 85% of the service life expected for the application.

Degradation is indicated when the 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.

The resistance of cell-to-cell connecting cables does not have to be included.

DIABLO CANYON - UNITS 1 & 2 3/4 8-16 Unit 1 - Amendment No.126 Unit 2 - Amendment No.124

(

3/4.8 ELECTRICAL POWER SYSTEMS BASES 3/4.8.1. 3/4.8.2. and 3/4.8.3 A.C. SOURCES. D.C. SOURCES. and DNSITE POWER DISTRIBUTION The OPERABILITY of the A.C. and D.C power sources and associated distri-bution systems during operation ensures that sufficient power will be available to supply the safety-related equipment required for:

(1) the safe shutdown of the facility, and (2) the mitigation and control of accident conditions within the facility. The minimum specified independent and redundant A.C. and D.C.

power sources and distribution systems satisfy the requirements of General Design Criterion 17 of Appendix A to 10 CFR Part 50.

The ACTION requirements specified for the levels of degradation of the power sources provide restriction upon continued facility operation commensur-ate with the level of degradation. The OPERABILITY of the power sources is 1

consistent with the initial condition assumptions of the safety analyses and is l

i based upon maintaining sufficient redundancy of the onsite A.C. and D.C. power sources and associated distribution systems OPERABLE during accident conditions coincident with an assumed loss-of-offsite power and single failure of one onsite A.C. source. The A.C. and D.C. source allowable out-of-service times are based on Regulatory Guide 1.g3, ' Availability of Electrical Power Sources,"

December 1974 except for the allowed outage time associated with Action State-I ment b. of Specification 3.8.1.1.

This allowed outage time was changed to be consistent with the recommendation of Diablo Oanyon Power Plant Diesel Genera-tor Allowed Gutage Time Study, May 1989. When one diesel generator is inoper-abla, there is an additional ACTION requirement to verify that all required systems, subsystems, trains, components and devices, that depend on the remain-ing OPERABLE diesel generators as a source of emergency power, are also OPERABLE, and that at least two auxiliary feedwater pumps are ODERABLE. This requirement is intended to provide assurance that a loss-of-offsite power event will not result in a complete loss of safety function of critical systems dur-ing the period one of the diesel generators is inoperable. The term, verify, as used in this context means to administrative 1y check by examining logs or other information to determine if certain components are out-of-service for mainteunce or other reasons.

It does not mean to perforin the surveillance requirements needed to der.onstrate the OPERABILITY of the component.

The OPERABILITY of the minimum speified A.C. and D.C. power sources and associated distribution systems during shutdown and refueling ensures that:

(1) the facility can be maintained in the shutdown or refueling condition for extended time periods, and (2) sufficient instrumentation and control capability is available for monitoring and maintaining the facility status.

The design of the 125-volt D.C. distribution system is such that a battery can have associated with it a full capacity charger powered from it associated 480-volt vital bus or an alternate full capacity charger powered from another 480-volt vital bus. Technical Specification 3.8.2.1 ACTION c. limits operation in the latter configuration to 14 days. Technical Specification 3.8.3.1 re-quires either charger be OPERABLE.

The Surveillance Requirements for demonstrating the OPERABILITY of the diesel generators are in accordance with the recommendations of Regulatory DIABLO CANYON - UNITS 1 & 2 B 3/4 8-1 Amendment Nos. it i t?, 93 & 92

ELECTRTCAL POWER SYSTEMS l

BASES A.C. SOURCES. D.C. SOURCES. and ONSITE POWER DISTRIBUTION (Continued)

Guides 1.9, " Selection of Diesel Generator Set Capacity for Standby Power Supplies." March 10, 1971. 1.108, " Periodic Testing of Diesel Generator Units Used as Onsite Electric Power Systems at Nuclear Power Plants," Revision 1.

August 1977, where applicable.

l The steady state voltage and frequency Surveillance Requirements for demonstrating the OPERABILITY of the diesel generators are consistent with the second level undervoltage relay allowable values. This is the minimum steady state voltage needed on 4160 volt vital buses to ensure adequate 4160 volt, 480 volt and 120 volt levels. The maximum steady state output voltage of 4400 V is the maximum operating voltage for 4000 V motors specified in ANSI'C84.1.

The maximum steady state output voltage of 4400 V ensures that, for a lightly loaded distribution, system, the voltage at the terminals of 4000 V motors is no more than the maximum rated operating voltages. The specified minimum and maximum frequencies of the DG are 58.8 Hz and 61.2 Hz.

respectively. These values are ecual to i 2% of the 60 Hz nominal frequency and are derived from the recommendations given in Regulatory Guide 1.9.

The Surveillance Requirements for demonstrating the OPERABILITY of the batteries are based on the recommendations of Regulatory Guide 1.129.

" Maintenance Testing and Replacement of Large Lead Storage Batteries for Nuclear Power Plants," February 1978, and IEEE Std 450-1980, "IEEE Recommended Practice for Maintenance Testing, and Replacement of Large Lead Storage Batteries for Generating Stations and Substations." One exception to Regulatory Guide 1.129. Section C.1, applies to the battery service test.

The service test should be performed during an outage, with the interval between tests not to exceed 30 months.

Verifying average electrolyte temperature above the minimum for which the battery was sized, total battery terminal voltage onfloat charge, connection resistance values and the performance of battery service and discharge tests ensures the effectiveness of the charging system, the ability to handle high discharge rates and compares the battery capacity at that time with the rated capacity.

Table 4.8-3 specifies the normal limits for each designated pilot cell and each connected cell for electrolyte level, float voltage and specific gravity.

The limits for the designated pilot cells float voltage and specific gravity, greater than 2.13 volts and 0.015 below the manufacturer's full charge specific gravity or a battery charger current that had stabilized at a low value, is characteristic of a charged cell with adequate capacity. The normal limits for each connected cell for float voltage and specific gravity, greater than 2.13 volts and not more than 0.020 below the manufacturer's full charge specific gravity with an average specific gravity of all the connected cells not more than 0.010 below the manufacturer's full charge specific gravity, ensures the OPERABILITY and capability of the battery.

I DIABLO CANYON - UNITS 1 & 2 B 3/4 8-2 Unit 1 - Amendment ".85.93J26 Unit 2 - Amendment '3.85.92224 Revised by NRC letter dated 9/15/94

ELECTRICAL POWER SYSTEMS BASES A.C. SOURCES. 0.C. SOURCES. and ONSITE POWER DISTRIBUTION (Continued)

Operation with a battery cell's parameter outside the normal limit but within the allowable value specified in Table 4.8-3 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 0.020 below the manufacturer's recommended 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 specific gravity will not be more than 0.040 below the manufacturer's full charge specific gravity and that the overall capability of the battery will be maintained within an acceptable limit; and (4) the allowable value for an individual cell's float voltage, greater than 2.07 volts, ensures the battery's capability to perform its design function.

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

The stored fuel. oil supports the function of the A.C. power sources to provide ]ower for the operation of emergency systems and engineered safety features (EST) during and following the shutdown of the reactor in the event that offsite power sources are not available.

The specified fuel oil quantity is based on the calculated fuel oil consumption necessary to support the operation of the emergency )ower source to power the minimum required ESF systems. Operation of minimum ESF systems is required to mitigate a design basis accident (LOCA) in one unit and those minimum required systems for a concurrent non-LOCA safe shutdown in the remaining unit (both units initially in Mode 1 operation).

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

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

The diesel fuel oil stora e system consists of two common tanks with a

)

nominal capacity of 40.000 gal ons each and six emergency diesel generator J

(EDG) fuel oil day tanks with a nominal capacity of 550 gallons each.

The fuel oil maintained in each day tank is used for the start and the initial operation of the associated EDG. Additional fuel oil is transferred from the storage j

tanks via the diesel fuel oil storage and transfer system to replenish the day tanks as required. The design incorporates sufficient redundancy so that a malfunction of either an active or a passive component will not impair the ability of the system to supply fuel oil.

Two redundant fuel oil transfer pumps supply fuel oil to EDG day tanks from either storage tank.

One Jump is adequate to supply the six EDGs operating at full load.

Esch E E day tank has two separate, redundant transfer pump start-stop level switches.

Each level switch automatically starts a transfer pump and opens the supply header solenoid valve corresponding to the respective transfer pump. 0-1 or 0-2.

In addition, high and low level alarms are provided on each day tank and activate alarms both locally and in the control room.

I DIABLO CANYON - UNITS 1 & 2 B 3/4 8-3 Unit 1 - Amendment 19. ". ".79.86.93.126 Unit 2 - Amendment 18.'3.73.78.85.92,124

ELECTRICAL POWER SYSTEMS BASES A.C. Sources. D.C. Sources, and DNSITE POWER DISTRIRLITION (Continued)

The Technical Specifications required minimum fuel oil in each EDG day tank is a contained quantity sufficient for EDG operation at full load for a nominal one-hour period. One hour is adequate time for an operator to take corrective action to restore the fuel oil supply to the affected day tank. The EDG day tank 31-day surveillance frequency is adequate to assure that a suf-ficient supply of fuel oil is available, since the transfer pumps auto-starts are at a level above the Technical Specification's minimum contained volume.

Therefore, normal EDG operation will not result in day tank levels below the Technical Specifications minimum requireJ volume. Additional assurance of sufficient day tank contained volume is provided by a low level alars.

For proper operation of the EDGs, it is necessary to ensure the proper quality of the fuel oil. Regulatory Guide 1.137, " Fuel Oil Systems for Sundby Diesel Generators," Revision 1, October 1979, as supplemented by ANSI N195-1976, addresses the recommended fuel oil practices. The surveillance frequen-cies of Technical Specifications 4.8.1.1.2d. and 4.8.1.1.3b. for checking and removing accumulated water from the day tank and main storage tank, respec-tively, are established by Regulatory Guide 1.137. Revision 1.

The Surve11-lance Requirements of Technical Specification 4.8.1.1.3e.1) for draining the fuel stored in the fuel oil storage tanks, removing accumulated sediment, and tank cleaning are in accordance with the recommendations of Regulatory Guide 1.137, Revision 1.

Surveillance Requirements for the assurance of fuel oil quality are in accordance with the ASTN Standards specified in Technical Specification 4.8.1.1.3.

The Surveillance Requirements applicable to diesel generator fuel oil storage 1 requires cleaning the fuel oil storage tanks on a 10-year frequency.

Conducting this surveillance requires the tank to be taken out of service. For this infrequent event, the inventory in the remaining tank is sufficient to support operation of the emergency diesel generator to power the minimum required loads to maintain safe conditions for a time period of 4 days, consid-ering one unit in Mode I through 6 operation and one unit in Mode 6 operation with at least 23 feet of water above the reactor vessel flange or with the reactor defueled.

3/4.8.4 ELECTRICAL EQUIPMENT PROTECTIVE DEVICES The OPERABILITY of the motor operated valves thermal overload protection and bypass devices ensures that these devices will not prevent safety related valves from perforsing their function. The Surveillance Requirements for snenstrating the OPERABILITY of these devices are'in accordance with Regulato-ry Guide 1.106, " Thermal Overload Protection for Electric Motors on Motor Operated Valves," Revision 1, March 1977.

A list of the TS-controlled MOV thermal overload protection and bypass devices is maintained in the Diablo Canyon plant procedures. The administra-tion of the list shall be conducted in accordance with Section 50.59 of 10 CFR Part 50 and the provisions in the Administrative Controls Section of the TS.

DIABLO CANYON - UNITS I & 2 8 3/4 8-3a Amendment Nos. 40-4-84, ??. 70,

% : L 93 8 92

ML20249B602

Text

Attachment:

Attachment:

Navigation menu

Search