ML20042G602

Proposed Tech Specs 4.6.1.8.b.2 & 4.6.1.8.c Changing Specified Lab Testing Std 4.6.1.8.d.5 to Include Different Dissipation Requirement for Heaters & Bases 3/4.6.1.8 Re Annulus Ventilation Sys

ML20042G602
Person / Time
Site:	McGuire
Issue date:	05/09/1990
From:	DUKE POWER CO.
To:
Shared Package
ML20042G601	List: ML20042G600 ML20042G602
References
NUDOCS 9005150139
Download: ML20042G602 (5)

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-Ed be . 2-CONTAIMENT SYS.T,gg ANNULUS ~ VENTILATION SYSTEM i

LIMITING COM ITION FOR OPERATION 3.6.1.8 'Two independent Annulus' Ventilation Systems shall be OPERA 8LE.

APPLICA81LITY:- M00ES 1, 2, 3, and 4.

ACTION: 1 With one Annulus Ventilation System inoperable, restore the inoperable system'

-to OPERABLE status within 7 days;or be in at least NOT STAN08Y 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 SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

L SURVEILLANCE' REQUIREMENTS l:  ;

4.6.1.8 Each Annulus Ventilation System'shall be demonstrated OPERA 8LE:

a. At least once per 31 days on a-STAGGERED TEST BASIS, by initiating, from the control room, flow throught the HEPA filters and charcoal adsorbers and verifying that the system operates for at least 10 hours1.157407e-4 days <br />0.00278 hours <br />1.653439e-5 weeks <br />3.805e-6 months <br /> with.the pre-heaters operating;

b. At least once per 18 months, or (1) after any structural maintenance on the HEPA filter or charcoal adsorber housings, or (2) following painting,. fire, or chemical release in any ventilation zone communi-cating with the system, by:

1) Verifying that the v' ent11ation- system satisfies the in place penetration and bypass leakage testing acceptance criteria of less than-1% and uses the test procedure guidance of-Regulatory Positions C.5.a. C.5.c and C.S.'d of Regulatory Guide 1.52, Revision 2 March 1978, and the system flow rate is 8000 cfm 2 10%;

2) Verifying within 31 days after removal that a laboratory analysis of a representative carbon sample obtained in accordance with Regulatory Position C.6.b of Regulatory Guide 1.52, Revision 2, March 1978, meets the laboratory testing criteria of Regulatory Position C.6.a of Regulatory Guide-1.52, Rev,ision 2, March 1978 for a methyl iodide-penetration of less . ,

than 1%;:::end(UM D,) Q mec:ts %( M ora.f g W i crhei.e.9 S 4 1 q p.4.\.g cc.. 4 Rep! feq q ,

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IESd* PuenkedA o-f lm % o.m $ y ,

McGUIRE - UNITS 1 and 2 3/4 6-16 AmdM 1% (.0W4-I) g g g,, gg

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. -med ikC ldd r M E u r u sh. M N 9 " '*

. CONTAINMENT SYSTEMS M Wn o sy/%b 4. itsrn ogny -u,3;d- l u

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me b 4 W SURVEILLANCEREQUIREMENTS(Continued) s pew %noniy,(gg,9py N

e L 3) Verifying a system flow rate of 800 ct'm

• 10% during system l operation when tested in'accordance w th ANSI N510-1975.

a

c. After every 720 hours0.00833 days <br />0.2 hours <br />0.00119 weeks <br />2.7396e-4 months <br /> of charcoal adsorber'op ration,'by verifying- ,

within 31 days after removal that a laboratory analysis of a'repre- '

sentative carbon sample obtained in accordance ith Regulatory

~

!. e Position C.6.b of Regulatory Guide 1.52,.Revisio 2, March 1978, meets the laboratory testing criteria of Regulato Position C.6.a  ;

of Regulatory Guide 1.52, Revision 2, March 19787 or a methyl ~

iodide. penetration of less than 1%) (@'4. g}, ,

d .' At least once per 18 months, by:

.1) Verifying that~ the pressure drop across the. combined HEPA:

filters and charcoal adsorber banks is less than 6 inches Water Gauge while operating the system at a flow rate of 8000 cfm-t 10%;

2) Verifying that the. system atarts automatically on-any.

Phase B Isolation test. signal; ,

3) Verifying that' the filter cooling electric motor-operated '

bypass valves can be opened; a

4) Verifying that each system produces-a negative pressure ~of greater.than or.' equal to 0.5 inch W.G. in the~ annulus'within .

22 seconds after a start signal and that this negative pressure l goes to -3.5 inches W.G. within 48 seconds after the start-signal. Verifying.that upon reaching a negative-pressure of'

~

l

-3.5 inches W.G. in the annulus, the system switches into its

! recirculation mode-of operation.and that the time required for the annulus pressure to increase to -0.5 inch W.G. is greater than or equal to 278 seconds; p

L 5) Verifying that-the pre-heaters dissipate 43.0 # 6.4 kW when 3 tested ,

in accordance with ANSI N510-1975. i L

e. After"each complete or partial replacement'of a HEPA filter bank, by l verifying that the HEPA filter bank' satisfies the in place penetration '

, and bypass leakage testing acceptance criteria'of less than 1% in L'

accordance with ANSI'N510-1975 for DOP test aerosol while-operating the, system at a flow rate of 8000 cfm i 10%; and

.. f. After each complete or partial. replacement of a charcoa'l adsorber bank, by verifying that the charcoal adsorber satisfi,es'the in- '

place penetration and bypass leakage testing acceptance criteria j of less than 1% in accordance with ANSI N510-1975 for a halogenated i hydrocarbon refrigerant test gas while operating the system.at a j flow rate of 8000 cfm i 10%.

p.dho.

McGUIRE - UNITS 1-and 2 3/4 6-17 (g .g,- -

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.- /~ 'CONTAllelENT SYSTEMS be D '

CONTAllelENT VENTILATION SYSTEM M hr M oa hI/

LINITING C00 SIT!0N FOR OPERATION

_l 3.6.1.9 Each contairment purge supply and/cr exhaust isolation valve thall be '

OPERABLE and:

a. Each containment purge supply and/or exhaust isolation valve-for the lower compartment (24-inch) and instrument room '

(12-inch and 24-inch) shall be sealed closed, and -

b.

?

The containment purge supply and/or exhaust isolat'on' valve (s)

L.

for the upper compartment (24-inch) may be opened for up to 250 hours0.00289 days <br />0.0694 hours <br />4.133598e-4 weeks <br />9.5125e-5 months <br /> during a calendar year provided no more than one pair 1 (one supply and one exhaust) are open at one time.

APPLICABILITY: MODES 1, 2, 3, and 4.

ACTION:-

a. With any containment purge supply and/or exhaust isolation valve for the lower compartment or instrument room open or not sealed closed, close and/or seal closed that. valve or' isolate-the penetra- ,

L tion (s) within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />, otherwise be in at least NOT STANOBY 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 SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />, b.

With the containment purge supply and/or-exhaust isolation' valve (s) for the upper compartment open for more than 250 hours0.00289 days <br />0.0694 hours <br />4.133598e-4 weeks <br />9.5125e-5 months <br /> during a calendar year, close any open valve or 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 />, otherwise be in at.least HOT STAND 8Y 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 SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />. .

c.

With a containment purge supply and/or' exhaust isolation valve (s) having a measured leakage rate in excess of the limits of Specifica- -

tions 4.6.1.9.3 and/or 4.6.1.9.4, restore the inoperable valve (s) to OPERABLE status within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, otherwise be in at least HOT STAND 8Y 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 SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.  :

l a

McGUIRE - UNITS 1 and 2 5/4 6-18

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3/4.6.1.7 : REACTOR SUILDING STRUCTURAL INTEGRITY This limitation ensures tnat the structural integrity of the containment 4

reactor building will be maintained comparable to the original design standards i for the life of the facility. Structural integrity is required to provide:  ;

, (1) protection for the steel vessel from external missiles -(2) radiation

, shielding in the event'of'a LOCA, and (3) an. annulus surrounding the steel .i

[ vessel that can be maintained at a negative pressure during acc'dont condi- N 2

tions A visual inspection is sufficient to demonstrate this capability..  ;

4 L 3/4.6.1.8 ANNULUS VENTILATION SYSTEM .

[ The OPERA 81LITY of the Annuias Ventilation System ensures that during -

i LOCA conditions, containment vessel leakage into the annulus will-be filtered

! through the HEPA-filters and charcoal adsorber trains prior.to discharge to- .

tho' atmosphere. Cumulative operation of the system with the heaters on for 10-

! hours over a 31-day period is sufficient to reduce the buildup of moisture on ,

the adsorbers and HEPA filters. This requirement is necessary to meet that l assumptions used in the accident analyses and limit the SITE SOUNDARY radiation ,

doses to within the dose guideline values of 10 CFR Part-100 during LOCA

! conditions. ANSI N510-1975 will be used as a procedural guide for surveillance testing.g 4

i 3/4.6.1.9 CONTAINMENT VENTILATION SYSTEM i The containment purge supply and exhaust isolation. valves for the lower

compartment (24-inch) and instrument room (12-inch and

24-inch) are required to be sealed closed during plant operations since these. valves have not been l  :

L demonstrated capable of closing during a LOCA. Maintaining these valves ,

sealed closed during plant operation ensures that excessive-quantities of '

radioactive material will not be released via the Containment Purge System.

To provide assurance that these containment valves cannot be inadvertently 1 opened, the valves are sealed closed in accordance with Standard Review-Plan 6.2.4 which includes mechanical devices to seal or lock the valve closed, or prevents power from being supplied to the valve operator.

The use of the containment purge lines is restricted to the purge-sugply  ;

and exhaust isolation valves in the upper compartment'(24-inch) since, unlike the valves'in the lower compartment and instrument room, the upper compartment-valves will close during a LOCA. Therefore, the SITE BOUNDARY dose guideline

, values of 10 CFR Part 100 would not be exceeded in the-event of an accident 3 during containment purging operation. Operation with these valves open.will be limited to 250 hours0.00289 days <br />0.0694 hours <br />4.133598e-4 weeks <br />9.5125e-5 months <br /> during a calendar year.

Leakage integrity tests with a maximum allowable leakage. rate for.

containment purge supply and exhaust supply valves will provide early indica-tion of resilient material seal degradation and will allow-opportunity for repair before gross leakage failures could develop._ The 0.60 L. leakage limit of Specification 3.6.1.2b. shall not be exceeded when the leakage rates deter-mined by the leakage integrity tests of these valves are added to the previously determined total for all valves and penetrations subject to Type 8 and C' tests.

McGUIRE - UNITS 1 and 2 8 3/4 6-3 M6t 0 Yl Am/~M. (ddQ_ _ - _ ..