ML20073P109

Proposed Tech Specs Re Containment Purge Sys

ML20073P109
Person / Time
Site:	Grand Gulf
Issue date:	05/10/1991
From:	ENTERGY OPERATIONS, INC.
To:
Shared Package
ML20073P105	List: ML20073P109
References
NUDOCS 9105200333
Download: ML20073P109 (5)

Text

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N C - A l/07 CONTAlNMENT SYSTEMS CONTAINMENT PURCE SYSTEM LIMITING CONDITION FOR OPERATION

3. 6.1. 9 The containment purge system supp'y and exhaust isolation valves shall be OPERABLE and either the 20 inch or the 6 inch purge system may be in operation; however, the 20 inch pur e system shall not be in operation nor shall the 20 inch valves be open,cr =cre than 1^00 bcure per 305 deys.

l APPLICABILITY:

OPERATIONAL CONDITIONS 1, 2 and 3.

T.NSEET I Aj ACTION:

With a containment purge system supply and/or exhaust isolation

% a.

except Oor deD. valve (s) inoperableh close the inoperable valve (s) or othemise isolate the penetration (s) 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 f" #'y'" 00 #

SHUTDOW within the next 12 hourt and in COLD SHUTDOW within

• O following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, b.

W4h-the 20 inch contein;;.ent purge enter iir speiettee end/er ith the 20 inch supply :.nd/cr ;xheast i: lat4cMok:(:) ;;r fer er+

-then 1000 heure per 300 days, discentinue 20 inch p.c syst:;-

operation ndfclose the open 20 inch valve (s) or othemise isolate IsstrRT the penetration (s) within four hours or be in at least HOT SHUTDOW f5 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 SHUTDOW within the following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

With a containment purge supply and/or exhaust isolation valve wi c.

resilient material seals having a measured leakage rate exceeding l

dg the limit of Surveillance Requirement 4.6.1.9.2 restore the inoperable valve (s) to OPERABLE statusAwithin 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> or be in at i

least HOT SHUTDOW 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 SHU I

gM within the following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

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SURVEILLANCE REQUIREMENTS 4.6.1.9.1)(TW.mittive ti;;.e thet the ?0 inch containnat ;rg :y:t= h::

IN5N teen in operatisc and the cweletive tiin th&t the 20 inch eupply-and/or-D exh;u;t i:Metha velves heve been eeen cgring the pest 205 dey; :h;H-be-det: :dnet-at-4eest ;nc; per 7 days.

4.6.1.9.2 At least once per 92 days each containment purge supply and exhaust isolation valve with resilient material seals shall be deo nstrated OPERABLE by verifying that the measured leakage rate is less tnan or equal to 0.01 L, when pressurized to P.

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GRAND GULF-UNIT 1 3/4 6-12 Andrviext A)o.

9105200333 910510 PDR ADOCK 0500.)O416

-p PDR

NL-91/07 Insert to Page 3/4 6-12 Insert A:

except for containment pressure control, for ALARA and air quality consideretions for personnel entry, or for surveillance or special testing on the purge system that requires the isolation valve (s) to be open.

Insert B:

With the 20 inch supply and/or exhaust isolation valve (s) open except as allowed by Specification 3.6.1.9, Insert C:

or otherwise isolate the penetration (s) so that the measured leakage rate does not exceed the limit of Speelficatlon 4.6.1.9.2 Insert D At least onc e per 31 days each 20 inch containment purge system supply and exhaust icolation valve shall be veri fled closed *.

Insert E:

• However, the vaivas need not be closed and may be open as allowed by Spec 1ficalion 3.6.1.9.

G9104051/SNLICFLn - 14 g, y,

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st - m /co CONTAINMENT SYSTEMS l

BASES i

_3 /4. 6.1. 5 FEE 0 WATER LEAKAGE CONTROL SYSTE_M designed to eliminate through-line leakage in the feedwa i

l surizing the feedwater lines to a higher pressure than the containment and drywell pressure.

This ensures that no release of radioactivity through the feedwater line isolation valves will occur following a loss of all of fsite power coincident with the postulated design basis loss of-coolant accident.

j 3/4.6.1.6 CONTAINMENT STRUCTOPAL INTEGRITY t

i This limitation ensures that the structural integrity of the containment i

will be. maintained comparable to the original design standards for the life of the unit.

withstand the maximum pressure of 11.5 psig in the event of a L i

this capability. inspection in conjunction with Type A leakage tests is sufficien A visual t

3/4.6.1.7 CONTAINMENT INTERNAL PRESSURE differential pressure ensure that the containment peak does not exceed the design pressure of 15.0 psig during LOCA conditions or that the external pressure differential does not exceed the design maximum external pressure differential of 3.0 psid.

The limit of -0.1 to 1.0 psid for initial i

containment-to-Auxiliary Building and Enclosure Building differential pressure i

will limit the containment pressure to 11.5 psid which is less than the desig j

pressure and is consistent with the_ safety analysis, i

3/4.6.1.8 CONTAINMENT WERAGE AIR TEMPERATURE The limitation on containment average air temperature ensures that the i

during LOCA conditions and is consistent with the safety l

3/4.6.1.9 CONTAINMENT PURGE SYSTEM-i conditions is restricted to the 6-inch purge supply and exh valves; whereas, continuous containment purge using the 20-inch purge system is limited to only OPERATIONAL CONDITIONS 4 and 5.

Intermittent _ use of the 20-inchpurgesystemduringOPERATIONAL' CONDITIONS 1,2and3isAp!!:w:

-te r:de:: :irt;rn; :;tivity levais and shall net exc;;d 1000 h;;r:

0 :nly:

l 005 daye.-

of ;; p;r, :CNSERT The design of the 6-inch purge supply and exhaust isolation valves meets During Normal Plant Operations."the requirements of Branch Technical Po t

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GRAND GULF-UNIT 1 B 3/4 6-2 Amendmext No. -

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4 NL-91/07 i

Insert to Page B 3/4 6-2 i

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restricted to the following:

2-a.

Containment pressure control, b.

ALARA and air quality considerations for personnel entry due tot high explosive gas concent ration, low oxygen. concentration, high airborne particulate activity, high gaseous radioactivity, smoke or fumes, or i

c.

Surveillance or special testing on the purge system that 5

requires the isolation valve (s) to be open.

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CERTIFICATION DDR FOR GNRO-91/00064 1

Responsible GNRO Section Organizat. ion d

Cover Letter NL j

J A

NL B.1, 3 through 11 NL B.2 PLS - P&SE C.1, 3, 11 NL C.2, 4, 5, 6, 7, 9, 10 PLc - OPS C.8 PLS - P&SE l

D NL i

Insert to Page 3/4 6-12 PLS - OPS l

Insert to Page B 3/4 6-2 PLS - OPS i

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