Text

Tech Spec Pages Omitted from 860715 Application for Amend to License NPF-35 Re Control Bank Insertion Limits & Corrected Tech Spec Numbers
	ML20203F535
Person / Time
Site:	Catawba
Issue date:	07/24/1986
From:	; DUKE POWER CO.
To:	;
Shared Package
ML20203F525	List: ML20203F521; ML20203F535;
References
	NUDOCS 8607310109
	Download: ML20203F535 (7)
	v • d • e

_ _ _

REACTIVITY CONTROL SYSTEMS CONTROL BANK INSERTION LIMITS LIMITING CONDITION FOR OPERATION 3.1. L ontrol banks shall be limi hysical insertion as shown I" ^8"* 3'1~1{ (und 1) an1 3.1-16 (ud z.3 A PLICABILITY: MODES la and 2*#.

N' ACTION:

With the control banks inserted beyond the above insertion limits, except for surveillance testing pursuant to Specification 4.1.3.1.2:

a. Restore the control banks to within the limits within 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months , or

b. Reduce THERMAL POWER within 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months to less than or equal to that fraction of RATED THERMAL POWER which is allowed by the bank position l

1 using the above figure, or

c. Be in at least HOT STAN08Y within 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months . ,

SURVEILLANCE REQUIREMENTS i

4.1.3.6 The position of each control bank shall be determined to be within the insertion limits at'least once per 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months except during time intervals when the Rod Insertion Limit Monitor is inoperable, then verify the individual l

rod positions at least once per 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months .

l i

i "See Special Test Exceptions Specifications 3.10.2 and 3.10.3.

With K,ff greater than or equal to 1.

8607310109 860724 PDR ADOCK 05000413 P PDR l CATAW8A - UNITS 1 & 2 3/4 1-21

4 d'

(Fully witndrawn) 225 h

- (785 228)

220 z- (292. 228) ~

200 2 - C.7[

--- ,-~

f l .,- sA*M B -

\ / :

~

180 : _

k 160- (0%,'162) _'~ doot,1 4e -

1 _

~'

I 140

~

I _- BANK C _

f t

e _- ~

C 120

, ,l ~

' 100 ~

SAMK D E

~

g 8.0 :

o . :_

e .- :

~

3 60 _

g(0%,47)

= ~

~

40 _

~

20 f (305,0) 0 -

20 40 60 80 100 0

(Fullyinserted) RelativePower(Percent) f FIGURE .1-l a R00 BANK INSERTION LIMITS VERSUS THERMAL POWER--

FOUR LOOP OPERATIO (gA 13 )

- m m e_________3wtnen__________

l i

t (FULLY WITHDRAWN)

~

l ~

5 (26%,'226)~

220 .

- (76%, 228)

/ f

! 200 _

f BANKB _

h f(O%,187) _

4 180

. b 2

l i

h160 ~

_/

g BANK C

- ~

(100%,162) -

140

~

_- c

$ _~ /

z -

f 9

120 -

/ -

f

(#3 ._- -

_/

2100

~

f g : _-

i 2 '

$ e 80 -

@ GE(O%, 72)

" 60 ~

'f BANK D I

40 _-

1 20 -

^-

O l 0 10 20 30 40 50 60 70 80 90 100 l (FULLY RELATIVE POWER (PERCENT OF RATED THERMAL POWER) j INSERTED) i FIGURE 3.

R00 BANK INSERTION LIMITS VERSUS , THERMAL POWER FOUR LOOP OPERATION (g g) i CATAWRA - HNTTC 1 ann 1 3gW

< a -~

i .

l POWER DISTRIBUTION LIMITS LIMITING CONDITION FOR OPERATION ACTION (Continued)

2. The Power Range Neutron Flux * - High Setpoints to less than or

equal to 55% of RATED THERMAL POWER within the next 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months .

I c. With the indicated AFD outside of the above required target band for more than 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months of cumulative penalty deviation time during the previous 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months and with THERMAL POWER less than 50% but

! greater than 15% of RATED THERMAL POWER, the THERMAL POWER shall not be increased equal to or greater than 50% of RATED THERMAL POWER until the indicated AFD is within the above required target band.

i SURVEILLANCE REQUIREMENTS i

4.2.1 e indicated AFD shall be determined to be within its limits during POWER TION above 15% of RATED THERMAL POWER by:

l i

j a. Monitoring the indicated AFD for each OPERABLE excore channel:

l 1) At least once per 7 days when the AFD Monitor Alarm is OPERABLE,

, and

2) At least once per hour for the first 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months after restoring the AFD Monitor Alarm to OPERABLE status.

b. Monitoring and logging the indicated AFD for each OPERABLE excore channel at least once per hour for the first 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months and at least once per 30 minutes thereafter, when the AFD Monitor Alare is inoperable. The logged values of the indicated AFD shall be assumed o exist during the interval preceding each logging.

l 4

4. 1.f2 Tte indicated AFD shall be considered outside of its target band when two r e OPERABLE excore channels are indicating the AFD to be outside the target band. Penalty deviation outside of the above required target band shall be accumulated on a time basis of:

- a. One minute penalty deviation for each 1 minute of POWER OPERATION outside of the target band at THERMAL POWER levels equal to or above 50% of RATED THERMAL POWER, and

Surveillance testing of the Power Range Neutron Flux nel may be performed pursuant to Specification 4.3.1.1 provided the indi ted FD is maintained within the Acceptable Operation Limits of Figure 3 -

A total of 16 hours1.851852e-4 days 0.00444 hours 2.645503e-5 weeks 6.088e-6 months operation may be accumulated with the AFD outside of he a ove required target band during testing without penalty deviation.

CATAWBA - UNITS 1 & 2 3/ 2-X %

r POWER DISTRIBUTION LIMITS SURVEILLANCE REQUIREMENTS 4.2. 1.1 he provisions of Specification 4.0.4 are not applicable.

4. 2.) For RAOC operation, Fq (z) s' hall be evaluated to determine if F (z) is

in its limit by: 9

a. Using the movable incore detectors to obtain a power distribution map at any THERMAL POWER greater than 5% of RATED THERMAL POWER.

b. Increasing the measured qF (z) component of the pcwsr distribution map by 3% to account for manufacturing tolerances and further increasing the value by 5% to account for m rement uncertainties.

Verify the requirements of Specification 3 .2, re satisfied.

,1

c. Satisfying th wing relationship: -

ss r M 2 '

Fq (2) x K(z) for P > 0.5 )

P ) (

F9 "(z) _ 2.X x K(z) for P < 0.5

(

)

(z) x 0.5 p. s where F"(z) is the measured F (2) increased by t e owances for 9 )

manufacturing tolerances and measurement uncerta nty, i the ,

Fq limit, K(z) is given in Figure 3.2-2, P is the elati HERMAL POWER, and W(z) is the cycle dependent function that accounts for power distribution transients encountered during normal operation.

This function is given in the Peaking Factor Limit Report as per Speci-l fication 6.9.1.9.

N

d. Measuring Fq (z) according to the following schedule:

1. Upon achieving equilibrium conditions after exceeding by 10% or more of RATED THERMAL POWER, the THERMAL POWER at which Fq (z) was last determined,* or

2. At least once per 31 Effective Full Power Days, whichever occurs first.

During power escalation at the beginning of each cycle, power level may be increased until a power level for extended operation has been achieved and a power distribution map obtained.

CAYnuM b it0'd"C 2 '- UNITS 1 and 2 3/ 2-Y J = __... L.'Z L *- U -

^ i n t = %( = ! ; ^ )-

a POWER DISTRIBUTION LIMITS SURVEILLANCE REQUIREMENTS (Continued)

e. With measurements indicating maximum FM (z) over z ( K(z)/

! has increased since the previous determination of Fq (z) either of the following actions shall be taken:

1) F q (z) shall be increased by 2% over that specified in Specifi-cation 4.2. .fc or

2) F M " measured at least once per 7 Effective Full q (z) sha 1 Power Days until two successive maps indicate that is not increasing.

maximum [F"(z)I over z ( K(z)/ 1,

f. With the relationships specified in Specification 4. 2.fc. above .

not being satisfied:

I

1) Calculate the percent F q (z) exceeds its limit by the following expression:

I ffmaximum ' b x 'W(z) for P > 0.5 over z

/-1[x100 i P 6P x (z), /

2.31

'S l 4

max' um

~g M(z) x (z)

F Lx100 for P < 0.5 <~

1 l k V' ,2=46.

l K(z)

2) One of the following actions shall be taken:

';;;ft: -

a) Within 15 minutes, control the AFD to within new AF which are determined by reducing the AFD limits o 3.2-If5y

1% AFD for each percent Fq (z ceeds its limits as e-mined in Specification 4.2 2.Jf 1). Within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months , reset the AFD alarm setpoints to e modified limit ,

b) Comply with the requirements of Specification .2.2 or Fq(z) exceeding its limit by the percent calculated a ove or c) Verify that the requirements of Specification 4. 2k3 Base Load operation are satisfied and enter Base Lo operation.

1 9

CATN64 7 C :^~ - UNITS 1 and 2 3/42-g .}znu..u.- .~. 'U wai z 11-ur:m =. errr-I . - . - . _ _ . _ _ _ _ _ _ _ , _ _ _ , , _ _ . _ _ _ _ _ _ _ _ _

POWER DISTRIBUTION LIMITS BASES AXIAL FLUX DIFFERENCE (Continued) unit 2- 1-Although it is intended tha t: 'rt 11 eppe[aedwiththeAFD within the target band required b catio 3.2.2) out the target flux difference, during rapid plant THERMAL POWER re ti , control rod motion will cause the AFD to deviate outside of the target band at reduced THERMAL POWER levels. This deviation will not affect the xenon redistribution suffi-ciently to change the envelope of peaking factors which may be reached on a -

subsequent return to RATED THERMAL POWER (with the AFD within the target band) provided the time duration of the deviation is limited. Accordingly, a 1-hour

- ty deviation limit cumulative during the previous 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months is provided b for op ation outside of the target band but within the limits of Figure

' 3.2-11w ile at THERMAL POWER levels between 50% and 90% of RATED THERMAL For THERMAL POWER levels between 15% and 50% of RATED THERMAL POWER, deviations of the AFD outside of the target band are less significant. The

,,,, of 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months actual time reflects this reduced significance.

- Erllnd 2 Pr n isions for monitoring the AFD on an automatic basis are derived from the process computer through the AFD Monitor Alarm. The computer deter-mines the 1-minute average of each of the OPERABLE excore detector outputs and provides an alarm message immediately if the AFD for at least two of four or two of three OPERABLE excore channels are outside the target band and-the THERMAL POWER is greater than 90% of RATED THERMAL POWER. During operation at THERMAL POWER levels between 50% and 90% and between 15% and 50% RATED THERMAL POWER, the computer outputs an alarm message when the penalty deviation accu-mulates beyond the limits of 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months and 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months , respectiv .

/ Figure B 3/4 2-1 shows a typical monthly target b d 4 []n;) Z, W.

0 11- q) 83/4.2.2 and 3/4.2.3 HEAT FLUX HOT CHANNEL FACTOR, and REACTOR COOLANT SYSTEM FLOW RATE AND NUCLEAR ENTHALPY RISE HOT CHANNEL FACTOR

T e limits on heat flux hot channel factor, coolant flow rate, and nuclear pf d enthal y rise hot channel factor ensure that: (1) the design limits on peak local ower density and minimum DNBR are not exceeded and (2) in the event of

$ E a LOC the peak fuel clad temperature will not exceed the 2200 F ECCS acceptance l d crit ria limit.

I 7 Each of these is measurable but will normally only be determined periodically as specified in Specifications 4.2.2 and 4.2.3. This periodic surveillance is sufficient to insure that the limits are maintained provided:

a. Control rods in a single group move together with no individual rod insertion differing by more than i 12 steps, indicated, from the group demand position;

b. Control rod groups are sequenced with overlapping groups as described in Specification 3.1.3.6; CATAWBA - UNITS 1 & 2 B 3/4 2-2

.-. -- ,. - - -

ML20203F535

Text

- (785 228)

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