Text

Proposed TS 3.1.1.1 Re LCO & SR for Boration Control
	ML20106C836
Person / Time
Site:	South Texas
Issue date:	09/28/1992
From:	; HOUSTON LIGHTING & POWER CO.
To:	;
Shared Package
ML20106C834	List: ML20106C836; ST-HL-AE-4222, Application for Amends to Licenses NPF-76 & NPF-80,changing TS 3.1.1.1 to Remove Variable Shutdown Margin Requirements for Modes 1 & 2 & Reflect That Reactivity Balance Can Only Be Performed When Reactor Critical;
References
	NUDOCS 9210060376
	Download: ML20106C836 (5)
	v • d • e

-. ~ -. _.. -. - - -

... _. - -.. _... -.. - ~. - =. _ - - -.

- 4 i

P

~ ATTACilMEliT 3 Marked-up current South Texas Project Technical-Specifications Reflecting Proposed Changes to the Shutdown Margin Technical Specification i

r TSci92-244.001 i

r 9210060376-920928 PDR ADOCK 05000490 P

-PCR

. _ m

.e s,1 mm

~ ~'

tm.w,, TNT 2 S H it.A Et/ n.g 3/4.1 REAC11v11Y CONTROL SYS1Lli5 PAGE _/

_ 0F 4/

l J

3 /4.1_.1 BORATION C0fi1ROL SHU100WN MARCIN - 1 GRfATER THAN 200 f avg i

Ulll TING _COLGLI T 10!!JOR.0Pf R!i110N 3.1.1.1 The SHU1DOWN MARGIN shall be greater than or equal to the limit as l

shown in figure 3.1-1.

APPLICABIL11Y:

MODES 1, 2^, 3, and 4.

AC110H:

With the SHU100Wfi MARGill less thcn the limit as shown in Figure 3.1-1, imme-diately initiate and continue boration at greater than or equal to_39 gpm of a i

solution containing greater than or caual to 7000 ppm boron or equivalent until the required SHU100WN MARGlit is restored.

5VREILL A!4CLREQULRD!D!IL 4.1.1.1.1 1he SHulDOWN i ARGill shall be determined to be greater than or equal to the limit as shown in figure 3.1-1:

i a.

Within I hour after detection of an inoperable control rod (s)-and at least once per 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months thereafter while the rod (s) is inoperable, lf the inoperable control rod is immovable or untrippable, the above required SHUTDOWN MARGIN shall be verified acceptable with an increased allowance for the withdrawn worth of the immovable or untrippable control rod (s);

b.

When in MODE 2 with K less than 1, within 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months prior to gg achieving reactor criticality by verifying that the predicted critical control rod position is within the limits of Specification 3.1.3.6; c.

Prior to initial operation above 5% RATED THERMAL POWER after each fuel loading, by consideration of the factors of Specifica-tion 4.1.1.1.1d. below, with the control banks at the maximum inser-tion limit of Specification 3.1.3.6; and I

)

re Special lest E.sceptions Specification 3.10.1.

SOUTH TEXAS - UN115 1 & 2 3/4 1-1

.. -, -. - -. _ - - - -... -. -. -.. -. ~.. -

. g - ~~~.,.

f-[bl hl AE t/nq l

3/4.1 REACilVilY CONTROL SY51F'S A(;[ _ :f g

tf

-a =___ _-n 3/4.1.1 BORA110N CONTROL SHulDOWN Mt RGIN - 1 GRFAlEPlHtf!?OD(f.

[ J F l I j $. C O ND il] OR10 R S P[ R A J 10R _ _ _.._ __ _ _ _ __ __ _ _ _ _,_ _ _ _

3.1.1.1 The 5HUIDOWN MARGIN shall be greater than or equal to the limit as shown in figure 3.1-1.

APPLICABill1Y:

MODES 1, 2*,

3, and 4.

AC110ti:

With the SHUIDOWN MAkGIN less than the limit as shown in figure 3.1-1, imac-diately initiate and continue boration at greater than or equal to 30 gpm of a solution containing greater than or equal to 7000 ppm boron or equivalent until the required SHUTDOWN MARGIN is restored.

k N[1@lb5ESDIEUMIS 4.1.1.1.1 The SHUIDOWN MARGIN shall be determined to be greater than or equal to the limit as shown in figure 3.1-1:

a.

Within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months af ter detection of an inoperable control rod (s) ann at least orce per 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months thereafer :iile the rod (s) is inoperable.

11 the inoperable control rod is immovable or untrippable, the abu e required SHUTDOWN MARGIN shall be verified acceptable with an increbed allowance for the withdrawn worth of the immovable or entrippable control rod (s);

[

b.

When in MODE 2 with K less than 1, within 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months prior to eff achieving reactor criticality by verifying that ti.e predicted critical control rod position is within the limitt of Specification 3.1.3.6; i

)

c.

Prior to initial operation above 5% RATED THERMAL POWER af ter each fuel loading, by consideration of the factors of Specifica-tion 4.1.1.1.1d. below, with the control banks at the maximum inser-tion limit of Specification 3.1.3.6; and I

See Special Test Excepticas Specification 3.10.1.

SOUTH IEXA5 - UN1151 & 2 3/4 1-1

o.

r ATTACHMENT 3 ~

~ -. - -

ST HL-AE 42n H[ ACT !VllY COH1l SYSl[ti5 j~ ~PAGE _ A_

0F. [' -

15'E.V11kl302MdE1!$1.({ 0M i!M'd1--

-.w.w m = - m m m.- m.

f d.

When in ICD { 3 or 4, at least once per 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months by consideration of the following factors:

i 1)

Reactor Coolant System beren concentration, i

2)

Control rod position, 3)

Reactor Coolant System average terrperature, 4) fuel burnup based on gross thermal energy generation, 5)

Xenon concentration, and 6)

Samarium concentration.

4,1.1. L 2 lhe overalI cone reactivity balance shalI be compared to predicted values to demonstrate agreement within i 1% ot/L at least once per 31 Ef f ective full Power Days (EfPD).

This comparison shall consider at least those factors stated in Specification 4.1.1.1.1d., above.

The predicted.: activity values shall be adjusted (normalized) to correspond to the actual core condition;.

~

prior to excer

',9 a fuel burnup of 60 EfPD after each fuel loading. w,

~.-- ~ _ ~ -- s

[ pro #sim of Spe cihk 4.0/4 arc. wi' c y l.'d,k r

I

~

~~

u I

SOUlti TEXAS - UNITS 1 & 2 3/4 1-2

...-;.~.,..-_.,,-.,____

4

Ari ACHMENT 3 ST HL-AE 4 c.3.

? AGE._O._ OF _.

TcM 4cc uerH if.,,- 94

/r -

f,

. _ /.

+.s s

/-

\\

.b -

D N

.._j.

y _...

s%

.._l.

__ _ D._._

,.p._. _, _ _

a g

7

. g..

e, e

g et...

\\-

w N

u

=

__J

.3. __.

w y

t o

E^._.

u q._

q _ _ _ \\__ _

..~..

.J.. 3 B

7

,__q_ 3 ___

e g

.q,__

g m

9..

4__,.

~ _. ___._4.q

.. _._ p y_

a._.

.-_i._

y_

,, a 3

2 s

a4

-4 g

\\t-q N o i

U

.q

.g mm 1

_q._

g__ q o

m u

3 g_

o i ag g

-=

O_Q

.J,

.... n w

w

._7,: _.___

L_._ _;

a t

m e-s s

_o r

u w si, ep

-p

_ q___

d e

4 g

o 2o y l__

L L_..-

o g-

'_ J_ __.3_-

.y

+

g-

}

J 4.

_..t_._

.e.

~p

-~_.

g p

7 g

-- dy_-.

m

'.I o

g q,,

o a

y o

LLb w

~

g i

O w"

O e

m 9

M Nm b

(dVX) N!OUYH t4*O310HS OL81nO3d l

/

t e

/-

k_

m 5001H TEXAS - UN115 ) 2. 2 3/4 1-3

(~l h ch:sid~5 ~ ~"

I 51 HL AE lCA A PAGE_M____0F Q

REQUIRED SHUTDOWN MARGIN fur MODES 1 AND 2:

1.75% DELTA RHO l

REQUIRED SHUTDOWN MARGIN MODES 3 AND 4

- G.0 O

}

I i

I

~

i Z

-~(t 2 7 o, 5.2 e) _

, 5. 0

/

p,_

a O

~~l ACCEPT ABLE REGION

~

g t__

z 4.0

-7'/

y G

/

3.0

/

y z

3;;

o

/

h

0 2

-(

1 7 5 ) ---

D

. a _. a..

/

I i

a i

'r I

I (n

_1_.

Q

_ ' 9 0 0,1. 7 5 ) __

@ 1.0

~~

UNACCEPTASh REGION 3

O F 0.0 l

0 500 1000 1500 2000 RCS CRITICAL BORON CONCENTRATION (PPM) f or ARI Minus Most Reactivo Stuck Rod FIGURE 3.1-1 REQUIRED SHUTDOWN MARGIN VERSUS RCS CRITICAL BORON CONCENTRATION I

- - - _ - - _ - - _ _ _

ML20106C836

Text

Navigation menu

Search