ML20065G957

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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  STP Nuclear Operating Company icon.png
Issue date: 08/22/1990
From:
HOUSTON LIGHTING & POWER CO.
To:
Shared Package
ML20065G956 List:
References
NUDOCS 9010240303
Download: ML20065G957 (6)
v • d • e


Text

_ _ _

o.... . ATTRrtMENT 2 -

-# , TMi.oAE 3542. .

. 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.

ACTION: .,

a. As shown in Table 3.3-10.

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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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t-1 SOUTH TEXA5 - UNiis 1 & 2 3/4 3-67 1

901024o303 900822 PDR ADOCK 05000498 y p PDC

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m- TABLE 3.3-10 8 -

f ACCIDENT MONITORING INSTRUNENTATION-O TOTAL MINIMUM '

NO. - 0F - CHANNELS

. INSTRUMENT' CHANNELS OPERABLE ACTION ,

C .

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5 1. Containment Pressure .4 -

1 38 -l.L

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i d l g 2. Reactor Coolant Outlet Temperature '

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

L 3. Reactor Coolant Inlet: Temperature - '

~Tento (Wide Range) 1/ loop 1/ loop. 35 .;

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! 4. Reactor Coolant Pressere - Wide Range 3 1 37 m and Extended Range

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5. Pressurizer Water Leve1L 4 1 43

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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  :

m O*, .P-l 5 10. ~ Auxiliary Feeduster Storage Tank F,P_j  !

g Water Level 3 1 37 "' @ @,  ;

e L 11. Auxiliary Feeduster Flow >M ,

1/ steam generator 1/ steam generator- W$

= 35 z; E 12.

Reactor Coolant System.Subcooling Margin Monitor 2. 1 36 oD "MD 2

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TABLE'3.3-10 (Continued)

F y ACCIDENT MONITORING INSTRUNENTATION '

TOTAL- MINIMUN C -NO. OF CHANNEL 5 i , INSTRIMENT , ~CilANNELS -

OPERABLE . ACTION

! C l . ?.1 13. Containment Water level =

..,,, -(Narrow Range)~ 7 1 -36 >;

Cantalesment Wter tevel (Wide Rampe) J 1 3/

y

15. 1 Core Exit Thermocouples **

4 tM. A 4 es/ 1 core 42 1: 'i '

quadrant.

h-

16. Steam Line Radiation Monitor 1/ steam line 1/ steam line. 40 pj y w

1 17 Containment.- Nigh Range Radiation. (n

  • w -Monitor 2 1 39
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- .

3 5e "

23. . Neutron Flux - Startup Rate ,

um ,

(Extended Range). 2: 1 ,36. i j

8 rn x 2.- O.

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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.

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 and D have 6 thermocouples per train each._ t)oadrants A~end C each have 6 thermocouples on one trale ind ..

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

! :thermocouples per train OPERABLE. ~

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

j, ACTION STATEMENTS

' ST HL AE 35VA:

,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 <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br />, or be' in at least fHOT SHUTDOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />..

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

,. . Number of Channels' requirements, restore one. inoperable channel i<-  : to OPERABLEistatus within 7 days, or be in.at least HOT SHUTDOWN -

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

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 <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br />; or be..in at least L HDT SHUTDOWN ~within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />. 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 <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.. ,

1

b. With the number of OPERABLE channels two less than the Total. -1

. Number of Channels requirement, restore at least one inoperable l l- channel to OPERABLE status within 7 days, or be in.at least :l HOT SHUTDOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />. .

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 <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> or be iin at leastJ H HOT SHUTOOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />. <

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 <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.

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 <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.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 <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />. 4 e;

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

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

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NO' CHAN4ES 1 W,( TABLE 3.3-10 (Continued) .

~/JT HMENT1 J 1 ACTION STATEMENTS'(Continued) H L;f -

gE OF A

,# 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  :

m D

channel to OPERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />, or be in at least' '

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

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 <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />, or be in at' least d HOT SHUTDOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />. }

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

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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 <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br />s-if repairs are 1 feasible without shutting.down or:

~

_ 1. 'Initiat'e an alternate method of monitoring the reactor. O P1 vessel inventory

[

t O 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

3. Restore the system to OPERABLE status at the next I l

scheduled refueling. I ACTION 42 - a. With the number of OPERABLE channels less than 4 thermocouples f s per quadrant per train, restore these thermocouples to OPERABLE 4" , ,

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

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

b. With the number of OPERABLE channels less than 6 thermocouples  ;

o per quadrant, restore these thermocou3les to OPERABLE status i H

within 7 days, or be in at least HOT 3HUTDOWN within the next 1 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.

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

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  • > u. ATTACHMENT 1
  • ?.i '# ST HL AE.35Q ~ t

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- PAGE G OF - k

.q, TABLE 3.3-10 (Continued) p ., "3 o- ' ACTION STATEMENTS (Continued)

' ~ .__ , - 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 <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br />, or be-in at least HOTm

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

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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 t m i g p be in at least HOT SHUTDOWN within the next'12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.

i. .

' 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 <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />. 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 <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> or be in at least HOT $HUTDOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />. .

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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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