ML20236U268

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Proposed Tech Spec 3/4.3.7.5,modifying Min Operable Channels Required for Standby Gas Treatment Sys Accident Monitoring Instrumentation
ML20236U268
Person / Time
Site: Fermi DTE Energy icon.png
Issue date: 11/30/1987
From:
DETROIT EDISON CO.
To:
Shared Package
ML20236U265 List:
References
NUDOCS 8712020400
Download: ML20236U268 (3)
v • d • e


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l TABLE 3.3.7.5-1 (Continued)

ACCIDENT MONITORING INSTRUMENTATION ACTION STATEMENTS-I ACTION 80 -

a. With the number of OPERABLE accident monitoring instrumentation i channels less than the. Required Number of Channels shown in ]

Table 3.3.7.5-1, restore the inoperable channel (s) 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 />.

b. With the number of OPERABLE accident monitoring instrumentation channels less than the Minimum Channels OPERABLE requirements )

of Table 3.3.7.5-1,-restore the inoperable channel (s) to 1 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 SHUTDOWN =

I 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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With the nwnber of OPERABLE channels less than required by the 1 minimum channels OPERABLE requirements, initiate the preplanned alternate metted of monitoring the appropriate parameter (s) within '

72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />, and:

s 1) either restore the inoperable channel (s) to OPERABLE status  !

within 7 days of the event, or s l

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.i 5 2) prepare and submit a Special Report to the Commission pursuant to l t

Specification 6.9.2 within 14 days following the event outlining  !

the action taken, the cause of the inoperability and the plans a nd schedule for restoring the system to OPERABLE status.

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FERMI - UNIT 2 3/4 3-62 i

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INSTRUMENTATION BASES .

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MONITORING INSTRUMENTATION (Continued) 3.4.3.7.2 SEISMIC MONITORING INSTRUMENTATION The OPERABILITY of the seismic monitoring instrumentation ensures that suf-ficient capability is available to promptly determine the ragnitude of a seistic event and evaluate the response of those features important to safety. This capa-bility is required to permit comparison of the measured rep onse to that used in j the design basis for the unit. This instrumentation is ccnststent with the recoe<

mendations of Regulatory Guide 1.12. " Instrumentation for earthquakes" April 1974.

3/4.3.7.3 METEOROLOGICAL MONITORING INSTRUMENTATION The OPERABILITY of the meteorological monitoring instrumentation ensures that sufficient meteorological data are available for estimating potential radi-ation doses to the public as a result of routine or accidental release of j radioactive materials to the atmosphere. This capability is required to evaluete the need for initiating protective measures to protect the health and safety of the public. ....s instrumentation is consistent with the recommendations of Regulatory Guide 1.23, "Onsite Meteorological Programs," February 1972.

3/4.3.7.4 REM 3TE -SHUTDOWN SYSTEM INSTRUMENTATION AND CONTROLS The OPERABILITY of the remote shutdown monitoring instrumentation ensures {

that sufficient capability is available to permit shutdown'and maintenance of i 4

HOT SHUTDOWN of the unit from locations outside of the control room. -This capability is required in the event control room habitability is lost and is consistent with General Design Criterion 19 of 10 CFR Part 50.

3/4.3.7.5 ACCIDENT MONITORING INSTRUMENTATION- j 1 The OFERABILlIY of the accioent monitoring instrumentation ensures that j sufficient information is available on selected plant parameters to monitor and 1

assess important variables following an accident. This capability is consistent )

with the recommendations of Regulatory Guide 1.97, " Instrumentation for Light Water Cooled Nuclear Power Plants to Assess Plant Conditions During and Following an Accident," December 1975, and NUREG-0737, " Clarification of TM1 Action Plan Requirements," November 1980.

"3/4.3.7.6 SOURCE RANGE MONITORS i

Ine source range monitors provide the operator with information of the status of the neutron level in the core at very low power levels during startup l and shutdown. At these power levels, tractivity additions shall not be made without this flux level information avn lable to the operator. When the inter

  • l mediate range monitors are on scale, adequate information is available without I the SRMs and they can be retracted. _l 3/4.3.7.7 TRAVERSING IN-CORE PROBE SYSTEM Ine OPERABILITY of the traversing in-core probe system with the specified minimum complement of equipment ensures that the measurements obtained from use of this equipment accurately represent the spatial neutron flux distribution of j the reactor core.

The TIP system OPERABILITY is demonstrated by normalizing all probes (i.e., detectors) prior to performing an LPRM calibration furetion. Monitoring core thermal limits may involve utilizing individual detectors to monitor selected areas of the reactor core, thus all detectors may not be required to be OPERABLE. The OPERABILITY of individual detectors to be used for monitoring is demonstrated by comparing the detector (s) output with data f

obtained during the previous LPRM calibration.

FERMI - UNIT 2 B 3/4 3-4 The mul+iple noble s u monaer. on+ulled on each disik.. i of n e

.% ndlw Gas Tb4m.n4 Sys4e- pro d e 4he nec essar y rnew 4ed.nq capa be't.4 'e s

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-lo assure A+ -+he. nor ma l c. a edended mon b'in) rc.ncies e equ.ced h NLIREG - o737 ama Repluby 6d.cle 1.97 c re m e4 .

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