Text

Proposed Tech Spec 3.3.3.6,eliminating Requirement to Shut Down Plant If One of Four Channels Inoperable
	ML20065G957
Person / Time
Site:	South Texas
Issue date:	08/22/1990
From:	; HOUSTON LIGHTING & POWER CO.
To:	;
Shared Package
ML20065G956	List: ML20065G957; ST-HL-AE-3542, Application for Amends to Licenses NPF-76 & NPF-80,changing Tech Spec 3.3.3.6 to Eliminate Requirement to Shut Down Plant If One of Four Channels Inoperable;
References
	NUDOCS 9010240303
	Download: ML20065G957 (6)
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. ATTRrtMENT 2 -

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1 0F 6 INST RUMENT AT ]ON,

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c ACC1 DENT MON]TORING INSTRUMENTAT10N UM! TING-COND]TIONFOROPERAT!0N 3.3.3.6 The accident' monitoring instrumentation channels shown-in Table 3.310 shall be OPERABLE.

APPLICABILITY:

MODES-1,-2, and 3.

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ACTION:

a.

As shown in Table 3.3-10.

i b.

. The provisions of Specification 3.0.4 are not applicable.

. SURVEILLANCE RE00!REMENTS

=4.3.3.6 Each accident monitoring instrumentation channel shall be' demonstrated 0PERASLE. by performance of the CHANNEL CHECK and CHANNEL CALIBRATION at the -

f recuencies s hown in Table' 4.3 7.

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TABLE 3.3-10 m-8

f ACCIDENT MONITORING INSTRUNENTATION-

-O TOTAL MINIMUM NO. - 0F -

CHANNELS f

INSTRUMENT' CHANNELS OPERABLE ACTION C

Containment Pressure

. 4 1

38

-l.L

~

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5 1.

i d

2.

Reactor Coolant Outlet Temperature l

g THOT (Wide Range) 1/ loop 1/ loop, 35 m

L 3.

Reactor Coolant Inlet: Temperature -

~Tento (Wide Range) 1/ loop 1/ loop.

35 l

4.

Reactor Coolant Pressere - Wide Range 3

1 37 and Extended Range m) 5.

Pressurizer Water Leve1L 4

1 43 J

6.

Steam Line Pressure 4/ steam generator 1/ steam generator

'38 l

7.

Steam Generator Water Level--

l Marrow Range

- 4/st

enerator 1/ steam generator 38 8.

Steam Generator Water Level -

Wide Range 1/neam generator 1/ steam generator 35 -

g t

g 9.

Refueling Water Storage Tank Water sg Level 3

1 37 l

5 10. ~ Auxiliary Feeduster Storage Tank F,P_j m O*,.P-g Water Level 3

1 37 e

>M L 11. Auxiliary Feeduster Flow 1/ steam generator 1/ steam generator-35 W z;

=

E 12.

Reactor Coolant System.Subcooling oD Margin Monitor 2.

1 36 "MD 2

,.-u.

3.

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c TABLE'3.3-10 (Continued)

I Fy ACCIDENT MONITORING INSTRUNENTATION TOTAL-MINIMUN C

-NO. OF CHANNEL 5 i

INSTRIMENT

~CilANNELS OPERABLE

. ACTION C

l

. ?.1 13.

Containment Water level

=

't

-(Narrow Range)~

7 1

-36

..,,, Cantalesment Wter tevel (Wide Rampe)

J 1

3/

y 15.

1 Core Exit Thermocouples 4 tM. A 4 es/ core 42 1:

'i 1

h-quadrant.

16.

Steam Line Radiation Monitor 1/ steam line 1/ steam line.

40 pj y

w (n

1 17 Containment.- Nigh Range Radiation.

-Monitor 2

1 39 w

18. Reactor Vessel Water Leeel (RWL)

2*

l' 41 @

19. Neutron Flux (Extended Range).

2 1

36

20. Containment flydrogen Concentration 2

1 36

\\

21. Containment. Pressure (Extended Range)

'2 1

36 22.

~5 team Generator 31oudoun Radiation

'Moniter 1/ blowdown line 1/ blowdown 11ne 40 M-5e 3

23.. Neutron Flux - Startup Rate um (Extended Range).

2:

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A. channel is eight sensors in a probe. A channel is OPERA 8tE if fewe er core sensors.'one or more. wgy -w l

in the tspper section and three or more:in the lower section, are OPERABLE..

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- A totaliof 50 thermocouples are provided with 25 thermocouples on each'of tuo trains. $sedrents 8 ind and D have 6 thermocouples per train each._ t)oadrants A~end C each have 6 thermocouples on one trale o#p l

and 7..thermocouples on the other train. No ACTION is regelred as,long as each' quadrant has 4 ~

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thermocouples per train OPERABLE.

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N O d HANGG~_S TABLE 3.3-10 (Continued) l ATTACHMENT 4

' ST HL AE 35VA:

j, ACTION STATEMENTS

,PAGE 4

0F' 4 i

ACTION 35 -

With the number of OPERABLE channels less.than the Minimum-L; Channels Operable requirement, restore at least one inoperable:

- channel to OPERABLE status _ within 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months , or be' in at least fHOT SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months ..

- ACTION'36 - a. With'the number of OPERABLE channels one less than the Total:

r Number of Channels' requirements, restore one. inoperable channel f

to OPERABLEistatus within 7 days, or be in.at least HOT SHUTDOWN -

i<-

within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months .-

s l:

b. With the number of OPERABLE channels less than the Minimum Channels Operable requirements, restore at least one inoperable-channel to OPERABLE status within 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months ; or be..in at least L

HDT SHUTDOWN ~within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months .

1 o

'l l-ACTION 37 - a. Withithe number of OPERABLE channels one less than the Total-Number:of Channels requirements, restore the inoperable-channel.

to OPERABLE status within 31 days, or be in at least HOT 1

SHUTOOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months ..

1

b. With the number of OPERABLE channels two less than the Total.

. Number of Channels requirement, restore at least one inoperable l-channel to OPERABLE status within 7 days, or be in.at least

l HOT SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months .

1

c. With the number of OPERABLE channels less than the Minimum Channels Operable re'quirement,. restore at least one inoperable channel:to OPERABLE status within48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months or be iin at leastJ H

HOT SHUTOOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months .

l-k ACTION 3E - a. With the number of OPERABLE channels one less than the. Total-Number of Channels' requirements, restore the inoperable channel to OPERABLE status within 90 days, or-be-in at least HOT:

}

l SHUTDOWN within the 'next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months .

1

b. With the number of OPERABLE channels two-less than the Total

_ Number of Channels requirements, restore the inoperable channel

-to OPERABLE status within 31 days, or be in at least HOT.

,4 SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months .1 I

c. With the number of OPERABLE channels three'1ess than the Total-Number of Channels requirement, restore at least'one inoperable E

channel to OPERABLE status within 7 ' days, or be in at'least HOT

-SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months .

4 e;

d. With the number of OPERABLE channels less than the Minimum L J Channels Operable requirement, restore at least one inoperable channel to OPERABLE status within 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months or be in at least HOT SHUTOOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months .

SOUTH TEXAS - UNITS 1 & 2 3/4 3-70 L

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TABLE 3.3-10 (Continued).

~/JT HMENT1 J

1 H

ACTION STATEMENTS'(Continued) gE OF A L;f r

ACTION 39 - a. With the ~ number of OPERABLE channels one less than the Total K"

Number of Channels requirements, restore one inoperable channel H

to OPERABLE status within 7 days, or be in at least HOT SHUTDOWN within the next-12 hours..

b b.- With the numbe'r of OPERABLE channels less than the Minimum 1

Channels Operable requirements,< restore-at.least one inoperablec channel 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' m

D HOT SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months .

W ACTION 40 -

With the number of OPERABLE channels less than the Minimum; Channels Operable requirements, restore at'least one inoperable

.l w

channel 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 d

HOT SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months .

}

ACTION 41 - a. With the number of OPERABLE channels one less-than the Required J

f Number of Channels, either restore the' system to OPERABLE j

=

status within 7 days if repairs are feasible without shutting.

1 coan or prepare and submit a Special Report to the Commission, pursuant to Specification 6.9.2.within 30. days following.the

'a event outlining the action taken, the cause'of the inoperability' and the plans and schedule-for restoring the system to OPERABLE status.

l:

l"

b. With the number of OPERABLE Channels one less than the-Minimum.

'l Channels OPERABLE in Table 3.3-10, either restore the inoperable; q

channel (s) to OPERABLE status within 48 hour5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months s-if repairs are 1

feasible without shutting.down or:

1.

'Initiat'e an alternate method of monitoring the reactor.

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~

_P1 vessel inventory

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2.

Prepare and submit a Special. Report to the Commission

[

pursuant-to Specification 6.9.2 within 30 days following the event outlining the' action taken, the cause of the'

'inoperability and the plans and schedule for restoring L

the system to OPERABLE status;'and I

3.

Restore the system to OPERABLE status at the next l

scheduled refueling.

I ACTION 42 - a. With the number of OPERABLE channels less than 4 thermocouples f

per quadrant per train, restore these thermocouples to OPERABLE s

4",

status within 31 days, or be in at least HOT SHUTDOWN within

~the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months , u

b. With the number of OPERABLE channels less than 6 thermocouples per quadrant, restore these thermocou3les to OPERABLE status i

o H

within 7 days, or be in at least HOT 3HUTDOWN within the next 1

12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months .

- SOUTH TEXAS UNITS 1 & 2 3/4 3-71

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ATTACHMENT 1 u.

?.i ST HL AE.35Q ~

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- PAGE G

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.q, TABLE 3.3-10 (Continued) p.,

"3

' ACTION STATEMENTS (Continued) o-

' ~.__, -

c.

With the number of OPERABLE channels less than 4 thermo-couples r et quadrant, restore these thermocouples to.

l.

0PERABl ? status within 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months , or be-in at least HOTm

?

' QHUTDOW within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months .

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ACTION 43 -

a.

With the number of OPERABLE channels two less than the

-5!

Total Number of-Channels requirements, restore the:

4 inoperable channel to OPERABLE status within 31. days. or

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be in at least HOT SHUTDOWN within the next'12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months .

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' b.

With the number of OPERABLE channels three less than the.

X Total Number of Channels requirement,. restore at least one E

inoperable channel to OPERABLE status'within 7 days, or-be.

L in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months .

i

'N' c.

With the number of OPERABLE channels less than the Minimum

. Channels Operable requirement - restore at least one.

inoperable channel to OPERABLE status within 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months or be in at least HOT $HUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months .

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I:4.1 SOUTH TEXAS - UNITS 1 & 2 3/4 3-72 AMCNDMENT NOS. 14 AND 4

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ML20065G957

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