ML20245L652

Proposed Tech Specs Addressing Design Mod to Reactor Bldg Railroad Bay Air Lock Doors.Design Change Results from Concern W/Reliability of Secondary Containment Integrity Barriers That Depend on nonsafety-related Air Supply Sys

ML20245L652
Person / Time
Site:	Fermi
Issue date:	04/21/1989
From:	DETROIT EDISON CO.
To:
Shared Package
ML20245L613	List: ML20245L652 NRC-89-0093, Application for Amend to License NPF-43,incorporating Change to Tech Specs 3/4.6.5.1 Re Secondary Containment Integrity & Definition 1.36
References
NUDOCS 8905080096
Download: ML20245L652 (7)

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Paoposso DEFINITIONS REACTOR PROTECTION SYSTEM RESPONSE TIME 1.33 REACTOR PROTECTION SYSTEM RESPONSE TIME shall be the time interval from when the monitored parameter exceeds its trip setpoint at the channel sensor until de-energization of the scram pilot valve solenoids. The response time may be measured by any series of sequential, overlapping or total steps such that the entire response time is measured.

REPORTABLE EVENT 1.34 A REPORTABLE EVENT shall be any of those conditions specified in Sec-  !

tion 50.73 to 10 CFR Part 50.

R00 DENSITY

. 1.35 ROD DENSITY shall be the number of control rod notches inserted as a fraction of the total number of control rod notches. All rods fully inserted is equivalent to 100% ROD DENSITY.

SECONDARY CONTAINMENT INTEGRITY 1.36 SECONDARY CONTAINMENT INTEGRITY shall exist when:

a. All secondary containment penetrations required to be closed during accident conditions are either:

1. Capable of being closed by an OPERABLE secondary containment automatic isolation system, or

2. Closed by at least one manual valve, blind flange, or deactivated ,

automatic damper secured in its closed position, except as i provided in Table 3.6.5.2-1 of Specification 3.6.5.2.

b. All secondary containment hatches and blowout panels are closed and sealed.

c. The standby gas treatment system is in compliance with the require-ments of Specification 3.6.5.3.

d. At least one door in eqch aqcess 1.o the, secondary containment is closed (ccePt as nofca in imn g meIowJ. l

e. The sealing mechanism associated with each secondary containment penetration, e.g., welds, bellows or 0-rings, is OPERABLE.

f. The pressure within the secondary containment is less than or equal Yobd be c r$. h*$EK $ for 9

SHUTDOWNMkNN H * *f " W Y 'oE 'cl l"exc 'I' 1.37 SHUTDOWN MARGIN shall be the amount of reactivity by which the reactor is suberitical br would be subcritical assuming all control rods are fully inserted except for the single control rod of highest reactivity worth which is assumed to be fully withdrawn and the reactor is in the shutdown condition; cold, i.e., 68'F; and xenon 'ree. 1 SITE BOUNDARY 1.38 The SITE BOUNDARY shall be that line beyond which the land is neither owned, nor leesed, nor otherwise controlled, by the. licensee.

FERMI - UNIT 2 1-6

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PROPOSED l j

CONTAINMENT SYSTEMS l 3/4.6.5 SECONDARY CONTAINMENT SECONDARY CONTA! WENT INTEGRITY l

LINITING CONDITION FOR OPERATION 1P l 3.6.5.1 SECONDARY CONTAliMENT INTEGRITY shall be maintained.

APPLICABILITY: OPERATIONAL CONDITIONS 1, 2, 3, and 8 ACTION:

q. Without SECONDARY CONTAIMENT INTEGRITY g p[7f[ N og (r y ,

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l, InOPERATIONALCONDITION1,2,or3,restoreSECbARYCONTAINNENT INTEGRITY within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 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 /> and in COLD SHUTOOWN within the following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. l 7

Z. In Operational Condition 8 suspend handling of irradiated fuel in the secondary containment, CORE ALTERATIONS and operations with a potential for draining the reactor vessel. The provisions of Specification 3.0.3 are not applicable.

h. Wkat SwkMkt courwnwr zwnear because of one moInnd hay access door inoperelle or epen Gr greakr than m/jued fy -# *

l. In oprurravAt. conviriav 1, 2, or 3, resk SE&MDMY 6wrwnvr TNT [6P.tIY by reSht . hey ftll & bnf gcor&~ krs k ofEM&E and clared s4dlas tplNAt 7 1 or be or af learf NOT SH24200 MHin 4 wt 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> a k cup mnaw wth de M4 24 kes.  ;

2.n mumvucwamew suspend k&3 d irmdalal fuel 'm 4he sucondary enfatnmedj coRs Acteureys ad opentkr tvW$ m

.pokk'al for dui+r %e reader venei. The provkiom of sp.ci-

%% 3.o.3 are not applicable.

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1. one rided bay aaesc dar any be open Gr up k four hnes et a

+Ime & SyrtSS and tgress er hSiing 3 py of k l2 hout's [Cr D640 fud rece&t adishks, prowded' de sher de is opfun ad Closed. _ 1 A __ _

• When irradiated fuel is being handled in the secondary containment and during ORE ALTERATIONS and operations with a potential for draining the reactor vessel.

FERMI - UNIT 2 3/4 6-51

PROPOSED CONTA!I0ENT SYSTEMS SURVEILLME emJIREMENTS 4.6.5.1 SEC0lOARY CONTAlletENT INTEGRITY shall be demonstrated by:

a. Verifying at least once per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> that the vacuum within the secondary containment is greater than or equal to 0.125 inch of vacuum water gauge.

b. Verifying at least once per 31 days that:

1. All secondary containment equipment hatches and pressure relief doors are closed and sealed jand ege railroad bay access doors 4e are closedgend se. led. b,th

/ .2. At least one door in each access to the secondary containment is closed.

3. All secondary containment penetrations not capable of being closed by 0PERA8LE secondary containment automatic isolation dampers / valves and required to be closed during accider.t conditions are closed by valves, blank flanges, or deactivated automatic dampers / valves secured in that closed position.

c. At least once per 18 months:

1. Verifying that one staney gas treatment subsystem will draw down the secondary containment to greater than or equal to 0.25 inch of vacuum water gauge in less than or equal to 567 seconds at a flow rate not exceeding 3000 cfs, and

2. Operating one staney gas treatment subsystem for 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> and main-taining greater.than or equal to 0.25 inch of vacuum water gauge in the secondary containment at a flow rate not exceeding 3000 cfa.

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