ML20054E774

Proof & Review Copy of Tech Spec Change Re post-LOCA Vacuum Breakers

ML20054E774
Person / Time
Site:	Grand Gulf
Issue date:	06/10/1982
From:	MISSISSIPPI POWER & LIGHT CO.
To:
Shared Package
ML20054E770	List: AECM-82-186, Forwards Proof & Review Copy of Proposed Revision to Tech Specs Re Drywell post-LOCA Vacuum Breakers & Supporting Justification AECM-82-247, Forwards Addl Tech Spec Waivers Required for Phase I Operations Which Consist of Low Power Testing & non-nuclear Heatup ML20054E774
References
NUDOCS 8206140204
Download: ML20054E774 (1)

Text

'

Attachment to.AECM-82/186

.e ,

CONIAI!; MENT SYSTEMS I.S~ I,, " , ' '.I.[_~. .[,". ",7,}-~ i

(

~

\. f. 3/4.6.5 DRYWELL POST-LOCA VACUUM BREAKERS

.11,2,',,~.'.".'.~".'.'.l' LIMITING CONDITION FOR OPERATION

,. 3.6.5 All drfsell post-LOCA v5cuum breakers chall be OPERABLE and closed.  : -

APPLICABILITY: OPERATIONAL CONDITIONS 1, 2 and 3.

'., ACTION: - "

i a.

With one drywl1 post-LOCA vacuua breaker ir.:per-ble for opening but known to be closed, restore the inoperable vacuum breakar to CPERABLE status -

5l*~ 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 SHUTOGWN 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 SHUTDOWN within the following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

b. With one drywell post-LOCA vacu .n breaker cprn, rest 6re the cpen vacuum breaker to the closed position within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> or be in at least HOT SHUT-00'<lN 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 SHUICO'r.'N with6 the following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. w,gy,svjp g,gg, y,jy,

c. With the position indicator f of an OPERASLE drywell post-LOCA vacuum breater inoperable, verify the vem L:;5W to be closed at least a .ce per ^

24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> by local indication. -

l inoperable. Otherwise declare the vm.c. bre:L:r.

I.

tse k+ tem %Ive .

SURVEILLANCE REQUIREMENTS - -

i N i 1 .

4.6.5 Each drywell post-LOCA vacuum breaker shall be:

l .

a. Verified closed at least once per 7 days.

. b; Demonstrated OPERABLE: e '

1.

, At leas,t once pe'r 31 days by: .

i a) ' Cycling the vacuum breaker and isolation valve (s) th*ough r .-

1 -

at least one complete *

.clemyof<. fullu trav u W- ts.okeb.en-b) Verifying the position in icator ERAB expectedvalvemovementduringtiie.cyclingtest.y observing g.[ g 4

2. At least once per 18 months by: - .

I

, e q ui va. t e.d. -rc..;y. a) required to open the -

!i -

Verifying vacuum breaker, the pressure from the closed differential, posi tion, to be Tess th

"'"%. M M le.ver or equal. to 1.0 ps' , and as* ** +(<- b) fo W va.c.um r= kc,r- sokh-Verifying the position indica or 0PERABLE by performancey gg Vacw % cog.k er- .

- 4 of a CHANNEL CALIBRATI.ON. ,

3.

Byl verifying the OPERABILITY.of the vacuum breaker isolation .

i -

valve differential prassure actuation instrumentation with the

, opening setpoin Mby performance of a: '

N l*b 'a) CHANNEL CHECK at least once per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, L,4 .. b) . CHANNEL FUNCTIONAL TEST at least once per 31 days, and smo614o204 e2061o CHANNEL CALIBRATION at least once per 18 months.

PDR ADOCK 05000416 -

E b .:./,i 5.

A PDR - .- ,-

. 3. .

'y . . . . . . ,

._- .g u .,e y

-< '?.;339GRANDGULF-UNIT 1 - E:;.'$y-,#3/46-45 .m ef's$.'w:' ..-d D..aS_j982, .

y52i64 % A ;nh % ,:. M u .5 4.:.a.u: -.=..'.h M M ^ n M h d -