ML20058L789

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Proposed Tech Specs Revising 870710 Tech Spec Amend Request Re Reactor Vessel Level Monitoring Sys Action Statement 35-3 Contained in Table 3.3-10, Post Accident Monitoring Instrumentation
ML20058L789
Person / Time
Site: Calvert Cliffs  Constellation icon.png
Issue date: 08/03/1990
From:
BALTIMORE GAS & ELECTRIC CO.
To:
Shared Package
ML20058L788 List:
References
NUDOCS 9008080110
Download: ML20058L789 (6)
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Text

Af fuhment j l

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- TABLE 3.3-10 (Centinuedl j ACTION STATEMENTS ,

I ACTION 31 - With the number of OPEMBLE post-accident monitoring channels less than required by Table 3.3-10, either restore the inoperable channel to OPERABLE status within 30 days or be in 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 32 - With the number of OPERABLE post-accident monitoring channels one less than the minimum channel operable requirement in Table 3.3-10, operatien may proceed provided the inoperable channel is restored to OPEPABLE status at the next outage of sufficient duration. l ACTION 33 - With the number of OPEPABLE post accident monitoring channels two less than required by Table 3.3-10, qither restore one inoperable channel to OPERABLE status whhin 30 days or be in 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 />. ,,, ,

r ACTION 34 - With the number of OPERABLE Post-Accident Monitoring Channels one

'f less than the minimum Channel OPERABLE requirement in Table 3.3-10, either restore the system to OPERABLE status within 7 days if repairs

/ are feasible without shutting down or prepare and submit a Special l -

Report to the Commission pursuant to Specification 6.9.2 within 30 days \

following the event, out!!ning the action taken, the cause of the Inoper-Q ability and the plans and schedule for restoring the system to g OPER ABLE status.

ACTION 33 - With the number of OPERABLE Channels two less than required by l-Table 3.310, either restore the Inoperable channel (s) to OPERABLE status within 43 hours4.976852e-4 days <br />0.0119 hours <br />7.109788e-5 weeks <br />1.63615e-5 months <br /> 11 repairs are feasible without shutting down ort ,

I 1. Initiate an alternate method of monitoring for core and reactor

  • coolant system voiding; f

L 2. Prepare and submit a Specla! Report to the Commission pursuant I 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 the system to OPERABLE status; and

\ 3.

the Restore :: :=: r JfjhWM m' to OPERABLE status at the next i

scheduled refueling.

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k0Y.O 9008080110 900803 PDR ADOCK 050003t7 P PDC CALVERT CLIFFS - UN T 1 3/4 3 41a Amendmenc No. /.'1,I

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fsh 3 of 9 INSTRUMENTAi!ON_

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,' BASES 3/4.3.3.6 POST-ACCIDENT INSTRUMENTAi!0N -

l The OPERABILITY of the' post-accident instrumentation ensures that sufficient infomation is available on selected plant This parameters capabilitytoissenitor

' and assess these variables following an accident.

consistent with the reconnendations of Regulatory Guide 1.97, 'Instrumen- .

tation for Light-Water-Cooled'Ncclear Plants ^to' Assess PlantnConditions <

During and Following an Accident," December 1975, and NUREG-0578, "TMI-2 Lessons Learned Task Force Status Report and Short-Tem Reconnendations." i s

3/4.3.3.7 FIRE DETEC'*!ON INSTRUMENTATION i' OPERABIt. TTY of the fire detection instrumentation ensures that adequate warning capability is available for the prompt detection of
fires. This capability is required in order to detect and locate fires in their early stages. Prompt detecticn of fires will reduce the poten-tial for damage to safety related equipment and is an integral element p i in the overall facility fire prctection program.

In the event that a portion of the fire detection instrumentation '

i is inoperable, the establishment of frequent fire patrols in the affected

( areas is required to provide detection capability until the inoperable l

\~ Winstr.snentation f-is restored f to operability. W

' ~-

f The Subcooled Margin Monitor (SMM). the Heated Junction Thermocouple (HJTC), and the

Core Exit Thermocouples (CET) comprise the inadequate Core Cooling (ICC

,I required by item II.F.: NUREG-0737, the Post TMI-2 Action Plan. The function of the ICC ins.rumentation is to enhance the ability of the plant operator to diagnose the approach coolant

{i from, ICC. Additionally, they aid in tracking reactor

(

f to, inventory.

and recovery These instruments are included in the Technical Specifications at the r request of NRC Generic Letter 83-37. These instruments are not required by the accident j analysis, nor to bring the plant to HOT STANDBY or COLD SHUTDOWN. 3 y

in the event more than four sensors in a Reactor Vessel Level channel are inoperable, k i

repairs may only be possible during an extended COLD SHUTDOWN, This is because the sensors . are accessible only after the plant has been cooled down and drained, and the

[

missile shield has been moved if only one chance! is inoperable, it should be restored to OPERABLE status in accordance with the schedule outlined in a Special Report. if

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both channels are inoperable, u ':- n 1._ .: shall""be restored  ? - .. . ;,, m.a to OPERABLE status  ;

l in the next refueling outage. 'N ^. C . "a . . . . r vs . . .. m m d u..a. _. r x. .-.

r m %pf & ' J\ /Vww Amencment No. 25, 53,7/y, g-CALYEXT C'!FFS - UNIT 1 3 '!/4 3-3 l

I

- - -- - - .--- n _ _ _ _ _ _ _

, .. Attaskmed J

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Pspe .9 Cf 9 TABLE 3.3-10 (Centinued) i ACTION STATEMENTS ,' .

ACTION 31 - With the number of OPEPABLE post-accident monitoring channels

> less than required by Table 3.3-10, either restore the  :

inoperable channel to OPEPABLE status within 30 days or be in i

. 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 32 - With the number of OPE?ABLE post-accident monitoring channels

- one less than the minimum channel operable requirement in I Tabic 3.3-10, o; ration may proceed provided thr., inoperable l channel is restored to OPEPAELE status at the r. ext outage of I sufficient duration.

ACTION 33 - With the number of OPEPAELE post-accident meritoring channels two less than required by Table 3.3-10, either restore one inocerable channel to OPE?ABLE status within 30 days or be in HOT SMUTDOWN within the next 12 hcurs. ,

- +

/ ACTION 34 - With the number of OPERABLE Post-Accident Monitoring Channels one

/( less than the minimum Channel OPERABLE requirement in Table 3.3-10, either restore the. system to OPERABLE status within 7 days if repairs are feasible without shutting down or prepare and submit a Special */s Report to the Commission pursuant to Specification 6.9.2 within 30 days following the event, outlining the action taken, the cause of the Inoper- .

ability and the plans and schedule for restoring the system to m OPERABl#E status.

!N ACTION 33 - With the number of OPERABLE Channels two less than required by Table 3.3-10, either restore the Inoperable channel (s) to OPERABLE g status within 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> if repairs are feasible without 'shuttirg down or:

1. Init!ste an alternate method of monitoring for core and reactor i

.( coolant system voiding;

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 ,

s schedule for restoring the system to OPERABLE status; and  :

3. Restore rYht 'r ..~Af3 ftet to OPERABLE status at the next

.......... s,. !

s scheduled refueling. I

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CALVERT CL:FFS - UNIT 2 3/4 3 als Amene.me" No. $,I

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g INSTRW.EhiATION, .

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f.ASES

- f 3/4.3.3.6 POST-ACCIDENT INSTRUMENTATION

' l

. The OPEPABILITY of the post-accident instrumentation ensures that 8 sufficient information is available on selected plant parameters to u' renitor and assess these variables following an accident. This capability is consistent with the rec:.mendations of Regulatory Guide 1.97, "Instru-mentation for Light-Water-cooled Nuclear Plants to Assess Plant Conditions ' 1 During and Following an Accident," December 1975, and NUREG-0578 "TMI-2 l Lessons Learned Task Force Status Report and Short-Term Recocinendations."  !

, [' ,

- y l

. 3/4.3.3.7 FIRE CETECTION INSTRUMENTATION OPETA ILITY of the fire detection instr.: mentation ensures that adequate warning capability is available for the prompt detection of

fires. This capability is required in order to detect and locate fires in their early stages. Prempt detection of fires will reduce the poten-l tial for damage to safety related equipment and is an integral ele..sent - -

in the overall facility fire protection program.

In the event that a portion of the fire detection instr'.snen+ation is inoperable, the establish:nent of frequent fire patrols in the affected

! areas is retuired to provide detection capability until the inoperable instn.snentation is rest.cre.d t.o operability.

The Subcooled Margin Monitor (SMM), the Heated Junction Thermocouple (HJTC), and the Core Exit Thermocouples (CET) comprise the Inadequate Core Cooling (ICC) instrumentation

/ required by item !!.F.2 NUREG-0737, the Post TM1-2 Action Plan. The function of the ICC instrumentation is to enhance the ability of the plant operator to diagnose the approach ',

to, and recovery from, ICC. Additionally, they aid in tracking reactor coolrnt inventory. These instruments are included in the Technical Specirhations at- the request of NRC Generic Letter 83-37. These instruments are not required by the accident ,

analysis, nor to bring the plant to HOT STANDBY or COLD SHUTDOWN.

f I l In the event more than four sensors in a Reactor Vessel Level chant el are inoperable, repairs may only be possible during an extended COLD SHUTDOWN. Th.s is because the sensors are accessible only after the plant has been cooled down and drained, and the missile shield' has been moved. If only one channel is inoperable, it- shou'd be restored to OPERABLE status in accordance with the schedule outlined in a Speciel ' Report. if ,

both channels are inoperable, '-

I shall be restored to OPERABLE status

/ in the next refueling outage. i.N OTC. M .c; = "' 'h - " t'? t;-enemped-I L

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