ML20150B038

Proposed Tech Specs,Allowing Third Type a Test (Containment Integrated Leak Rate Test) & 10-yr Inservice Insps to Be Uncoupled & Performed in Separate Refueling Outages

ML20150B038
Person / Time
Site:	Davis Besse
Issue date:	03/07/1988
From:	TOLEDO EDISON CO.
To:
Shared Package
ML20150B035	List: ML20150B032 ML20150B038 ML20150B309
References
NUDOCS 8803160138
Download: ML20150B038 (2)

Text

l .D.ocket No. 50-346 l License No NPF-3 Serial No. 1474 Attachment 3 l CC'f7AIN)ENT SYSTT)fS CONTAIN)ENT Lt.AKAG1 l

LIMITING CONDITION FOR OPERATION 3.6.1.2 Containment leakage rates shall be limited to:

a. An overall integrated leakage rate of 1 L 0.50 percent by weight of the containment air per 24 hourl,at P,, 38 peig,

b. A combined leakage rate of ( 0.60 L valves subject to Type 3 ani C testI,for all penetrations and when pressurized to P,.

c. for all penetrations A combined identified leakage in Table 3.6 1 as rate of 5 0.015 L'ry containment bypass secends leakage paths, when pressurized to P,.

d. A single penetration leskate rate of 5 0.15 L for the containment purgeandexhaustisolationvalvespecialtest.

APPLICABI11TT: MODES 1, 2, 3 and 4.

)

l CTION:

)

a. With either (a) the measured overall integrated containment leakage rate exceeding 0.75 L leakage rate for all penetration s(b) with and the eensured valves subject to combined Type 3 aad C tests leakage exceeding rate exceeding 0.60 L,L, 0.015 or (c)the restore with the combined Icakage rete (s) to bypass within the limit (s) prior to i$c,reasing the Reactor Coolant Systes temperature above 200'T.

b. With a single containment purge and exhaust isolation valve penetration having leakage rate exceeding 0.15 L restere the leakage rate to within limits in 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 NOT STANDBT within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHVIV0WN within the followins 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

SURVEILIANCE REQUIREMENTS 4.6.1.2 The contalarant leakage rates sna11 be demonstrated at the following test schedule and shall be determined in conformance with the critei*a specified in 3 Appendix J of 10 CTR $0 using the methods and provisions of ANSU N4$.4 - 1972:

a. Three Type A tests (Overall Integrated Containment Leakage Rate) shall be conducted at 40 + 10 eenth intervals durip.hutJoAnt P,

5. g:::_ :n jtigil-1-be-cdcted-dering-thi:_shn;;

sd3tc h each30Jgat_tetyice,Pgrio(,_f. e thirt-trat iv. ih. 10 yes: ple: i:n:-::: i::;;;4&eas i, U DAVIS-BESSE UNIT 1 3/4 6-2 Amendment No. 90 8803160138 PDR 880307 P

ADOCK 05000346 DCD

'docketNo.50-346 License N9. NPF-3 Serial No.1474 Attachment 3 3/4.6 CONTAINMENT SYSTEMS 8ASES 3/4.6.1 PRIMARY CONTAINMENT 3/4.6.1.1 CO,NTAIMENT INTEGRITY Primary CONTAl*ENT INTEGRITY ensures that the release of radioactive materials frun the containment atmosphere will be restricted to those leakage paths and associated leak rates assumed in the stlety analyses.

This restriction, it: conjunction with the leakafle rate limitStion, will limit the site boundary radiation doses to with n the limits of 10 CFR 100 during accident conditions.

3/4.6.1.2 CONTAINMENT LEAKAGE '

Yhe limitations on containment leakage rates ensure that the total containment leakage volume will not exceed the value assurd in the safety analyses at the peak accident pressure of 38 psig P . As an added conservatism, the measured overall integrated leakage,ra'te is further limited to < 0.75 L during performance of the periodic tests to account for possble degra,dation of the containment leakage barriers between leakage tests.

m e-testir,g for :ss.cir,9 set ret &E m ent

( Mu, -

The special test for the containment purge and exhaust isolation '

seats. is intended to detect gross degradation of seals on the valve valves The special test is performed in addition to tN Aeoendix J requirements.

3/4.6.1.3 CONTAINNT AIR LOCKS -

The limitations on closure and leak rate for the containment sir locks are required to meet the resti'ictions on C0"\tWENT INTEGRITY and contairunent leek rate. Surveillance testing of t... air lock seals pr'd videy assurance that the overall air lock leakage will not become (C',s e to seal damage during the intervals between air lock V

shtA_

lokay rates se consis4<d

' The wi thwrv<illau, tesu$

de require,,,,ds o ({cr tocF950, measuWn npenJ6.T stk N hII wi.ig 7 c u,,9&s. % 4L ra ted cQ each Tp A +csting set w,,a wc4 b< (

y ecaduc tea when the ta d a skJJowa p ia r t l

( in se rvit, inge &ns, e o p. A.\ re a.L.jo e is.- 4, t o q<avo f 6, vn s.

is comiJ<r<d i

pu,ve n bq the I L R T , had in a cc rdan<, Jtb license repire . b wL,.

DAVIS-BESSE. UNIT 1 B 3/4 6-1 Amendment No. 90  !

-. -