ML17310B061

Proposed Tech Specs Figure 3.2-1,Section 3/4.1.1.4 & Bases 3/4.1.1.4,establishing Min Temp for Criticality at 545 F for Facilities

ML17310B061
Person / Time
Site:	Palo Verde
Issue date:	02/18/1994
From:	ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
To:
Shared Package
ML17310B060	List: ML17310B059 ML17310B061
References
NUDOCS 9403020084
Download: ML17310B061 (18)

Text

REACTIVITY CONTROL SYSTEMS MINIMUM TEMPERATURE FOR CRITICALITY LIMITING CONDITION FOR OPERATION

3. l. 1.4 The Reactor Coolant System lowest operating loop temperature (T )

shall be greater than or equal to ~F.

S'VN 1

APPLICABILITY: MODES 1 and 28.

ACTION:

With a Reactor Coolant System operating loop temperature (T ld) less than sy6'&2 F, restore T ld to within its limit within 15 minutes or be in HOT STANDBY within the next 15 minutes.

SURVEILLANCE RE UIREMENTS

4. l. 1.4 The Reactor Coolant System temperature (T ld) shall be determined to be greater than or equal to 4&2'F:

SVs'.

Within 15 minutes prior to achieving reactor criticality, and

b. At least once per 30 minutes when the reactor is critical and the ld is less than Reactor Coolant System T cold 5&7'F.

S5'6 than or equal to 1.0.

PWith K ff greater eff PALO VERDE " UNIT 1 3/4 1"5 AMENOMENT NO. EA, 69 P,,

9403020084 9'40218 PDR ADOCK 05000528 FADR

ye ~~<<voarx~vtot<<oNc ~

/Peplos-ce ~ I wi 4g Z < s,e ~ 4 REAC R COOLANT LD LfG T PERATURE vs RE POWER VEI.

575 570

g. 5 0 568

~ 565 I

REA OF ACC TABLE OP E RATIO 0

g 555 Q

o 55 540

'IO 20 30 0 50 0 70 CORE POWE EVEL,% OF ATED THERM POWER FIGURE 3.2"1 ACTOR COOLA COLD LEG TEMPE URE VS CORE OWER LEVEL PALO VERDE - UNIT l 3/4 2-8 AMEHPMEHT HO. 69

k Z'arses +

REACTOR COOLANT COLD LEG TEMPERATURE vs. CORE POWER LEVEL 580 575 570 568 568 565 AREA OF ACCEPTABLE OPERATION 560 555 CI 552 O 550 u

545 10 20 30 40 50 60 70 80 90 100 CORE POWER LEVEL,% OF RATED THERMAL POWER FIGURE 3.2-1 REACTOR COOLANT COLD LEG TEMPERATURE vs. CORE POWER LEVEL

~ 'I ~ > T l l

II

REACTIVITY CONTROL SYSTEMS BASES SHUTDOtw MARGIN AND KN 1

(continued)

Other technical specifications that reference the Specifications on SHUT-DOMN MARGIN or K are: 3/4.1.2, BORATION SYSTEMS, 3/4. 1.3, MOVABLE CONTROL ASSEMBLIES, 3/4.3. $ , REFUELING OPERAT10NS-BORON CONCENTRATION, 3/4. 10. 1, SHUTDOMN MARGIN AND K - CEA WORTH TESTS, and 3/4.10.9, SHUTDOMN MARGIN AND KN CEDMS TFST"N 1

3/4. 1.1.3 MODERATOR TEMPERATURE COEFFICIENT (MTC)

The limitations on moderator temperature coefficient (MTC) are provided to ensure that the assumptions used in the accident and transient analysis remain valid through each fuel cycle. The surveillance requirements for measurement of the MTC during each fuel cycle are adequate to confirm the MTC value since this coefficient changes slowly due principally to the reduction in RCS boron concentration associated with fuel burnup. The confirmation that the measured

" MTC value is within its limit provides assurances that the coefficient will be maintained within acceptable values throughout each fuel cycle.

3/4.1.1.4 MINIMUM TEMPERATURE FOR CRITICALITY s'e5 This specification ensures that the reactor will not be made critical with the Reactor Coolant System cold leg temperature less than SSB F. This limita-tion is required to ensure (1) the moderator temperature coefficient is within its analyzed temperature range, (2) the protective instrumentation is within its normal operating range, (9 o winiwv~ Vc.mph.~Sure. lc pI ops d'e a/ I 4o~ Sic.eicos J 7e s ~ +>A'. fd. ~

t- +) +A.~ u-e~c- ~a~ Vc.ss ~l i's ~hove, w jn I ~ v~ N7 ~~~

PALO VERDE - UNIT 1 B 3/4 1-la AMENDMENT NO. 23

R INFORMATION ONL HINIHUH TEHPERATURE FOR CRITICALITY LIHITING CONDITION FOR OPERATION re" ~

3. L 1.4. The Reactor Coolant System lowest operating loop temperature (T shall be greater than or equal to ~F.

++5 ld)

APPLICABILITY: HODES 1 and 2¹.

ACTION:

With a Reactor Coolant System operating loop temperature (T ld) less than EV5'5R? F, restore T old to within its limit within 15 minutes or be in HOT cold STANDBY within the next 15 minutes.

SURVEILLANCE RE UIREHENTS

4. l. 1.4 The Reactor Coolant System temperature (T ld) shall be determined to be greater than or equal to $ 82'F:

a. Within 15 minutes prior to achieving reactor criticality, and

b. At least once per 30 minutes when the reactor is critical and the Reactor Coolant System T ld is less than 5&F F.

+88, than or equal to 1.0.

¹With K ff greater eff PALO VERDE - UNIT 2 3/4 1"5 AHENDHENT NO. 88

f J

)R IMFORViATIOR ONLY REACTIVITY CONTROL SYSTEMS BASES SHUTDOWN MARGIN and K (continued)

Other technical specifications that reference the Specifications on SHUTDOWN MARGIN or K are: 3/4.1.2, BORATION SYSTEMS, 3/4.1.3, MOVABLE CONTROL ASSEHBLIES, 3/k. 9.1, REFUELING OPERATIONS"BORON CONCENTRATION, 3/4.10.1, SHUTDOWN HARGIN AND KN 1

- CEA WORTH TESTS, and 3/4.10.9, SHUTDOWN MARGIN AND CEDMS TESTING.

KN 1

.,3/4. 1. 1. 3 HODERATOR TEMPERATURE COEFFICIENT MTC The limitations on moderator temperature coefficient (MTC) are pro-vided to ensure that the assumptions used in the accident and the transient analysis remain valid through each fuel cycle. The surveillance requirements for measurement of the MTC during each fuel cycle are adequate to confirm the MTC value since this coefficient changes slowly due principally to'he reduction in RCS boron concentration associated with fuel burnup. The confirmation that the measured MTC value is within its limit provides assurances that the coeffi-cient will be maintained within acceptable values throughout each fuel cycle.

3/4. 1.1. 4 MINIMUM TEMPERATURE FOR CRITICALITY g d5 This specification ensures that the reactor will not be made critical with the Reactor Coolant System cold leg temperature less than 592'F. This limitation is required to ensure (1) the moderator temperature coefficient is within its analyzed temperature range, (2) the protective instrumentation is within its normal operating r ange, (g) ~ ~- ~~~ gg~qc,v ~ 4LJ vc. ss p...'ec J 4, Sp~cc' e>ccg4io >H o ~ +)

vasss e,l ls a 6ou4

]4g Mtwlw>~ ~ ~4)'r ~<~ P

~

PALO VERDE - UNIT 2 B 3/4 1-la av)voxEW'o.

0 MINIMUM TEHPERATURE FOR CRITICALITY LIMITING CONDITION FOR OPERATION 3.1.1.4 The Reactor Coolant System lowest operating loop temperature (T ld) shall be greater than or equal to SSZ F.

HODES 1 and 2¹. 6'g5'PPLICABILITY:

ACTION:

rq, With a Reactor Coolant System operating loop temperature (T ld) less than 5'VS $ 62'F, restore T ld to within its limit within 15 minutes or be in HOT cold STANDBY within the next 15 minutes.,

SURVEILLANCE RE UIREMENTS 4.1. 1.4 The Reactor Coolant System temperature (T ld) shall be determined to be greater than or equal to 5824F:

a. Within 15 minutes prior to achieving reactor criticality, and

b. At least once per 30 minutes when the reactor is critical and the Reactor Coolant System T ld is less than $ 97'F.

/SZ than or equal to 1.0.

¹With K eff greater PALO VERDE " UNIT 3 3/4 1-5 AMENDMENT NO. 27i 42

.~

r 1

IPgp la c,e uvi 44 REACT R CO ANT CO LEG EMPER URE vs ORE P R LEVE 58 575 70 O 568

~ 5 C

EA OF A EPTABLE

n. 5 PERATI W

~ 555 0

o

>0 20 0 40 50 0 7 80 80 OO CORE P ER LEV,%OF TEDT ERMAL WER FIGU 3. 2-REACTOR OOLANT OLD TEHPE TURE . COR PONE EVE PALO VERDE - UNIT 3 3/4 2"8 AHENDHENT NO 42

I I

REACTOR COOLANT COLD LEG TEMPERATURE vs. CORE POWER LEVEL 580 575 570 568 568 565 AREA OF ACCEPTABLE OPERATION 560 555 O 552 550 u

545 10 20 30 40 50 60 70 80 90 100 CORE POWER LEVEL,% OF RATED'THERMALPOWER FIGURE 3.2- I REACTOR COOLANT COLD LEG TEMPERATURE vs. CORE POWER LEVEL

I r

/

iR INFORMATION ONL REACTIYITY CONTROL SYSTEMS BASES SHUTDOWN MARGIN AND KN 1

(continued)

Other technical specifications that reference the Specifications on SHUT-DOMN MARGIN or KN' are: 3/4.1.2, BORATION SYSTEMS, 3/4.1.3, MOVABLE CONTROL ASSEMBLIES, 3/4.9.1, OPERATIONS-BORON CONCENTRATION, 3/4.10.1, SHUT" DOMN MARGIN AND KN -REFUELING CEA MORTH TESTS, and 3/4.10.9, SHUTDOWN MARGIN AND 1

K1

- CEDHS TESTING.

3/4.1.1. 3 MODERATOR TEMPERATURE COEFFICIENT HTC The limitations on moderator temperature coefficient (MTC) are provided to ensure that the assumptions used in the accident and transient analysis remain valid through each fuel cycle. The surveillance requirements for measurement of the MTC during each fuel cycle are adequate to confirm the MTC value since this coefficient changes slowly due principally to the reduction in RCS boron concentration associated with fuel burnup. The confirmation that the measured HTC value is within its limit provides assurances that the coeffi-cient will be maintained within acceptable values throughout each fuel cycle.

4 MINIMUM TEMPERATURE FOR CRITICALITY t'/4.1.1.

This specification ensures that the reactor will not be made critical with the Reactor Coolant System cold leg temperature less than 592'F. This limita-tion is required to ensure (1) the moderator temperature oefficient is within its analyzed temperature range, (2) the protective instrumentation is within its normal operating range, L fg)

C ) m mt~ i~u~ ~eWPQI ~4uWC SW PmutOCaf

~4v ~pep Ib- ) Ti a 4 H> 48p4ion ~/i/. J()

J C~3 +ABC, t"Ca a 44 v L/CAB tt n.4o ve.

JVP~

4C w,P g.vA PALO YERDE - UNIT 3 B 3/4 1-la AMENDMENT NO. 2

A, ~

4%4(

'S 1

1 1

h