ML19312B777

From kanterella
Jump to navigation Jump to search
Proposed Tech Spec 3.5.2 Permitting Operation of Unit 1 During Cycle 4 in Unrodded Mode
ML19312B777
Person / Time
Site: Oconee  Duke Energy icon.png
Issue date: 11/09/1977
From:
DUKE POWER CO.
To:
Shared Package
ML19312B776 List:
References
NUDOCS 7911190567
Download: ML19312B777 (14)
v • d • e


Text

'D

)

O ATTACHMENT 2

~

OCONEE 1, CYCLE 4 PROPOSED TECHNICAL SPECIFICATION CHANGES l

j O

V911190 f f7 I

I

)

1 g.

If within ons (1). hour of' detce= tion of an inopcrable rod, it is not determined that a ILik/k. hot shutdown margin exists combining the worth.of the inoperable rod with each.of the other rods, the reactor shall be brought to tha hot standby condition until this margin is established.

h.

Following the determination of an inoperable rod, all rods shall be exercised within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> and ex'ercised weekly until "the' rod problem is solved.

)

1.

If a control rod in the regulating or safety red groups is declared inoperable, power shall be reduced to 60 percent of the thermal power allowable for the reactor coolant pump com-i bination.

j.

If a control rod in the regulating or axial power shaping groups is declared inoperable, operation above 60 percent of rated power may continue provided. the rods in the group are positioned such that the rod that was declared inoperable is maintained within. allowable group average position limits of Specification 3.5.2.2.a and. the withdrawal limits of Specification 3.5.2.5.c.

3.5.2.3 '

are limited by the restrie:1ons of Specification 3..L3Ji. and tha.

J

.The wortha af singla inserted.contral rods during criticality control rod. position limits defined in Specification 3.5.2.5.

g 3.5.2.4 Quadrant Power Tilt a.

Except for physics tests, if the maximum positive quadrant power tilt exceeds 6.03% Unit 1, either the quadrant power tilt shall l

3.41% Unit 2 3.41% Unit 3 be reduced to less than, 6.031-Unit I within two hours or the I

I.4I Unic 2 1

3.41% Unit 3 following actions shall be taken:

)

(1) If four reactor coolant pumps are in operation, the allowable thermal power shall be reduced below the power level cutoff (as identified in specification 3.5.2.5) and further reduced by 21 of full power for each 1% tilt in excess of 6.03% Unit 1.

l 3.41; Unit 2 3.41% Unit 3 (2)*If less than four reactor coolant pumps are in operation, the i

allowable thermal power for the reactor coolant pump combination

,shall be reduced by 2% of full power for each 1% tilt.

l l

I 3.5-7 1

0

-we

. -.. - + _..

e r

w g.

,,es eg--

c--,i-n-

-v

(3) Exce q ca provided in sp cifiestien ^ 5 2.4.b, tha reacter chal. on brcught to tho hot shutdown condition within four hours if tha quadrant power tilt is not reducsd to 1ses than 6~.03% Unit I within 24 hsura.

l 3.41% Unit 2 3.41 Unit 3 b.

If the quadrant tile exceeds -6.03% Unit 1 and there is simultaneous l' 3'.41% Unit 2 3.41% Unit 3 indication of a misa11gned control rod per Specification 3.5.2.2, reactor operation may continue provided power is reduced to 60%

of the thermal power allowable for the reactor coolant pump combination, c.

Except for physics test, if quadrant tilt exceeds 9.44% Unit 1, 9.44%- Unit 2 9.44% Unit 3 a controlled shutdown shall be initiated immediately, and the reactor shall be brought to the hot shutdown condition within four hours.

l d.

Whenever the reactor is brought to bot shutdown pursuant to 3.5.2.4.a(3) or 3.5.2.4.e above, subsequent reactor operation is permitted for the purpose of measurement, testing, and corrective action provided the thermal power and the power range high flux setpoint allowable for the reactor coolant pump combination are. restricted by a reduction of 2 percent of full power for each L percent tilt for the maximum tilt observed prior to shutdown.

e Quadrant power tilt shall be monitored on a minimum frequency of once every eso hours during power operation above 15 percent of rated power..

3.5.2.5 Control Had Positions a

Tech 4e=1 Specification. 3.1.3.5 does not prohibit the exercising

.of individual safety rods,as required.by Table 4.1-2 or apply to inoperable safety red limits in Tec %4e=1 Specification 3.5.2.2.

x..

b.

Except for physics testa, cps aing rod' group overlap shall be 25: t 5 between two sequential grouns. If this limit is exceeded, corrective measures shall be taken immediately to achieve an accen--

table overlap. Acceptable overlap shall be attained within two hours or the reactor shall be placed. in a hot. shntdown condition within an additional 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.

c.

Position limits are specified for regulating and axial power shaping control rods. Except for physics tests or exercising control rods, the regulating control red insertion /vithdrawal limits are specified on figures 3.5.2-1Al, I

(Unit 1); 3.5.2-131, 3.5.2-132 and 3.5.2-133 (Unit 2);

3.5.2-1C1, 3.5.2-1C2 and 3.5.2-1C3 (Unit 3) for four pump operation, and on figures 3.5.2-2A1, l

(Unit 1); 3.5.2-231, 3.5.2-232 and 3.5.2-233 (Unit 2);

3.5.2-2C1, 3.5.2-2C2 and 3.5.2-2C3 (Unit 3) for two of three 3.5-8

.y _ _

m 7-contral rc..l, th3 axial pow r chaping conu_al rod in Grtion/~,

withdrcwal limits cro cp:cified on figurco 3.5.2-4Al, (Unit 1); 3.5.2-4B1, 3.5.2-4B2, cud 3.5.2-4B3 (Unit 2).

If the control rod position ifmits are exceeded, l

corrective measures shall be taken immediately to achieve an acceptable control rod position. An acceptable control rod position shall then be attained within.two hours.

The minimum shutdown margin required by Specificatior 3.5.2.1 shall be mahtained at all times.

l d.

Except for physics tests, power shall not be increased above the power level cutoff as shown on Figures 3.5.2-1A1, (Uns.t 1), 3.5.2-131, 3.5.2-132, and 3.5.2-133 (Unic 2),

and 3.5.2-1C1, 3.5.2-lC2, 3.5.2-1C3 (Unit 3), unless the following requirements are met.

(1)

The xenon reactivity shall be within 10 percent of the value for operation at steady-state rated power.

(2)

The xenon. reactivity worth has passed its final maximum or peak. during its approach to its equilibrium valve min 4=nm for operation at the power level cutoff.

3.5.2.6 Raactor power imbalance shall be monitored on a frequency not to exceed two hours during powt. operation above 40 percent rated power.

Except for physics tests, imbalance shall be maintained within the envelope defined by Figures 3.5.2-3A1, 3.5.3-3B1,. l 3.5.2-332, 3.5.2-333, 3.5.2-3C1, 3~.5.2-3C2, and 3.5.2-3C3.

If,the im-balance is not within. the-envelope defined. by these-figures, corrective measures shall be taken ter: achieve an acceptable imbalance..T.E air accep-table-imbalance is not achieved.within two hours,. reactor power shall be reduced until imbalance limits.are met.

3.5.2.7 The. control rod drive patch. panels sh=11 be locked at all times with Iimited access to be authorized by the manager or his designated alternate.

3.5-9

~ ~ -

~. - - -

.n e

\\

]

s (2:0,10 2)

(274,102) s0

( tit,so )

(asT,s o)

(3" '80I OPE R ATION POWER 80 (194,80)

(254,80)

LEYEk

{

IE DI8 RESION CUTOPP 18 NOT ALL O WE D 70 OPER ATION IN i

TNis RE tt04 E

so (I s e,e 0 )

is atsTRICTre

( 2 4 8,e0 )

i N

80 (141,80) 205,80)

"I"I" 40 o

sNUTOOWN Llutt i

PERMISSIBLE go QPER ATIN G REtl0N 10 (e e,le) m, (34,0) i l

I I

l 1

1 1

I I

I O

10 0 200 300 A00 INDEX,'n WITNORAWM 0

25 80 TS 10 0 0

as SO TS 10 0 l

1 1

I I

I I

I I

l en0UP a sa00P 7 0

28 64 TS 100 l

I I

1 l

eROUP S ROO INDEX IS.TME PERCE NTA GE SUla CF TNE WITN D R AW AL OF GROUPS 5,4 AND T OCONEE 1 CYCLE 4 ROD POSITION LIMITS FOR FOUR PUMP OPERATION FROM 0 TO 100 (+jo) EFPD OCONEE NUCLEAR STATION,

Figure 3.5.2-1A1 9

3.5-12 t

t

)

)

ENTIRE PAGE DELETEP (These figures will be provided after analyses for operation of Oconee Unit 1 beyond 100 EFPD is performed.)

3.5-13 O

s

.n-

]

ENTIRE PAGE DELETED (These figures will be provided after analyses for operation of Oconee Unit I beyond 100 EFPD is performed.)

3.5-13a e

~

.=

)

( 3o,los)

( as4, sos)

{

so

( als,so )

PuwP (aso,so)

OPE R ATioes 2)

RESTRICTED 4

IN TMit W

to oPtA ATios lu THIS (194,8o) 28s1088 (244,80)

=

s atelon is Nor 3

ALLoWEo WIT N I

To a oR a Puurs ou so 2

so (141, so )

( le s, so )

  • d J

u 3

4o ulNimuel g

swuToown LawlT

~

Penulselets yt oPERATIN G l

el 30 atelom

=y

( se,ls )

so (so,o)

I I

I e

1 i

t i

I I

t j

a 10 0 aco 300 noo INotX, % WITNDRAWN o

as so Ts too o

as so 7s too i

I I

I I

I I

I I

I group s 4R o u P T o

25 so 75 loo I

I I

I I

eRour e rod INDEX IS TME PERCENTAGE Sute or THE WITMo R AW AL or SRouPS s,4 ANo 7 OCONEE 1 CYCLE 4 ROD POSITION LIMITS FOR TWO AND THREE PUMP OPERATION FROM 0 TO 100 (+10)

EFPD 3.5-18 pu me OCONEE NUCLEAR STATION Figure 3.5.2-2Al

"?

e

m 3

)

ENTIRE PAGE DELETED (These figures will be provided after analyses for operation of Oconee Unit i beyond 100 EFPD is performed.)

3.5-18a O

e

)

)

ENTIRE PAGE DELETED (These figures will be provided af ter analyses for operation of Oconee Unit i beyond 100 EFPD is performed.)

1 3.5-18b O

+.. ~.

-m---

)

ENTIRE PAGE DELETED (These figures will be provided after analyses for operation of Oconee Unit I beyond 100 EFPD is performed.)

)

3.5-21a 1

1 j

ENTIRE PAGE DELETED (These figures will be provided after analyses for operation of Oconee Unit 1 beyond 100 EFPD is performed.)

l l

l 3 5-21b 6

O

ENTIRE PAGE DELETED (These figures will be provided af ter analyses for operation of Oconee Unit I beyond 100 EFPD is performed.)

3.5-23d

---e

~

~.

ENTIRE PAGE DELETED (These figures will be provided after analyses for operation of Oconee Unit I beyond 100 EFPD is performed.)

1

)

i i

I 3.5-23e p

,-

Retrieved from "https://kanterella.com/w/index.php?title=ML19312B777&oldid=4798349"