Text

Proposed Tech Specs,Revising Spec 3.6.1.3 to Allow Entry & Exit of Containment Air Locks to Perform Maint on Air Lock Components
	ML20082D418
Person / Time
Site:	Arkansas Nuclear
Issue date:	04/04/1995
From:	; ENTERGY OPERATIONS, INC.
To:	;
Shared Package
ML20082D412	List: 2CAN049511, Application for Amend to License NPF-6,revising Spec 3.6.1.3 to Allow Entry & Exit of Containment Air Locks to Perform Maint on Air Lock Components; ML20082D418;
References
	NUDOCS 9504100098
	Download: ML20082D418 (9)
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CONTAINMENT SYSTEMS CONTAINMENT AIR LOCKS

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LIMITING CONDITION FOR OPERATION 3.6.1.3 Each containment air lock shall be OPERABLE.

l APPLICABILITY:

MODES 1, 2, 3 and 4.

ACTION:

a.

With one containment air lock door inoperable in one or more containment air locks' 8:

1.

Verify that at least the OPERABLE air lock door is closed in the affected air lock within one hour and either restore the inoperable air lock door to OPERABLE status within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months or lock the OPERABLE air lock door closed'.

2.

Operation may then continue provided that the OPERABLE air lock door is verified to be locked closed at least once per 31 days.

3.

Otherwise, be in at least HOT STANDBY within the next six hours and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months , b.

With the containment air lock interlock inoperable in one or more containment air locks *:

1.

Verify that at least one OPERABLE air lock door is closed in the affected air lock within one hour and restore the inoperable air lock interlock to OPERABLE status within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months or lock an OPERABLE air lock door closed *.

2.

Operation may then continue provided that the OPERABLE air lock door is. verified to be locked closed at least once per 31 days.

3.

Otherwise, be in at J east HOT STANDBY within the next six hours and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

j c.

With one or more air locks inoperable for reasons other than those addressed in ACTION a. or b. :

1.

Immediately initiate action to evaluate overall containment leakage per LCO 3.6.1.2.

2.

Verify that at least one door in the affected air lock is closed within one hour and restore the affected air lock to OPERABLE status within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

j 3.

Otherwise, be in at least HOT STANDBY within the next six hours and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

d.

The provisions of specification 3.0.4 are not applicable.

Separate ACTION entry is allowed for each air lock.

With both air locks inoperable, entry and exit is permissible for seven days under administrative controls.

Entry and exit is permissible to perform repairs on the affected air lock components.

Entry and exit is permissible under the control of a dedicated individual.

ARKANSAS - UNIT 2 3/4 6-4 Amendment No.

l '

LCONTAINMENT SYSTEMS SURVEILLANCE REQUIREMENTS 4.6.1.3.1 Each containment air lock shall be demonstrated OPERABLE as

.specified in 10 CFR 50, Appendix'J, or as modified by approved exemption's a.

By conducting a door seal leak test with a seal leakage rate of 5 0.01 La when tested at 2 10 psig',

b.

By conducting an overall air lock leak test with an overall air lock leakage rate of s 0.05 La when tested at 2 Pa, and c.

The provisions of Specification 4.0.2 are not applicable.

4.6.1.3.2 Each containment air lock interlock shall be demonstrated OPERABLE 1

by testing the air lock interlock mechanism at least once per 184 i

days'.

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' Leakrate results shall also be evaluated against the acceptance criteria of specification 3.6.1.2.

An inoperable air lock door does not invalidate the previous successful performance of the overall air lock leakage test.

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' If this surveillance comes due when the containment is not open, it may be deferred until the next entry into containment.

l ARKANSAS - UNIT 2 3/4 6-5 Amendment No.

3/4.6 CONTAINMENT SYSTEMS-

+

BASES i

3/4.6.1 PRIMARY CONTAINMENT 3/4.6.1.1 CONTAINMENT INTEGRITY Primary CONTAINMENT INTEGRITY ensures that the release of radioactive materials from the containment atmosphere will be restricted to those leakage paths and associated leak rates assumed in the accident analyses.

This restriction, in conjunction with the leakage rate limitation, will-limit the site boundary radiation doses to within the limits of 10 CFR 100.

during accident conditions.

3/4.6.1.2 CONTAINMENT LEAKAGE l

The limitations on containment leakage rates ensure that the total containment leakage volume will not exceed the value assumed in the accident analyses at the peak accident pressure, Pa. As an added

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conservatism, the measured overall integrated leakage rate is further

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limited to 50.75 ~ L. or 50.75Le (as applicable) during the performance of l

the periodic tests to account for possible degradation'of the containment leakage barriers between leakage tests.

The surveillance testing for measuring leakage rates are consistent with the requirements of Appendix "J" of 10 CFR 50.

3/4.6.1.3 CONTAINMENT AIR LOCKS The limitations on closure and leak rate for the containment air locks are required to meet the restrictions on CONTAINMENT INTEGRITY and containment leak rate. Surveillance testing of the air lock seals provide assurance that the overall_ air lock leakage will not become excessive due to seal damage during the intervals between air lock leakage tests.

For the purpeses of this specification, the vertical end plates of the air lock barrel, on which the doors themselves are mounted, shall be considered part of the door.

i ARKANSAS - UNIT 2 B 3/4 6-1 Amendment No.

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. 1 MARKUP OF CURRENT ANO-2 TECHNICAL SPECIFICATIONS I

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-CONTAINMENT SYSTEMS CONTAINMENT AIR LOCKS LIMITING CONDITION FOR OPERATION 3.6.1.3 Each containment air lock shall be OPERABLE uith:

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2 0:th d:::: :1:::d ::::pt rh:n th: ci: 1::h i: h:ing n::d 4ee

1 t:;ncit :ntry :nd : nit th:::;h th: ::nt:inz:nt, then :t 1:::t ::: ci 1::t d::: :h:11 h :1 ::d, nd-h.

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v:::11 ci: 1::h 1 :h:;; ::t:

f 0.05 L -eb-P.,

'50 peig).

1 APPLICABILITY:

MODES 1, 2, 3 and 4.

ACTION:

a.

With one containment air lock door inoperable in one or more containment.

air lockss 1.

M: int:in yerify that at least the OPERABLE air lock door'ig closed in the aftpeted air lock within one hour and either restore the inoperable air lock door e6-12; OPERABLE status within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months or lock the OPERABLE air lock door clos eda, g

2.

Operation may then continue until p::f:r-- ::.cf th; n:nt

quir:d :v:::11 ci 1::h lech:;: t::t provided that the-OPERABLE air lock door is verified to be locked closed at least once per 31 days.

3.

Otherwise, be in at least HOT STANDBY within the next six hours and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .-

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The p::vizi::: cf 0;;;ifi ;tien 2.0.0 :::. t 1;;110:hl:.

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With th: ::nt:in;:nt :12 1::h in:p::: hic, ::::pt : th: ::: ult Of

n in:;;;;hl: cir 1::h d:::,

int in :t 1:::t :n: cir 1::h d::: el:::d; :: ter: the in:;:::Sle 21: 12:h t: OP:n?.3LE

tstu: withir 2t h:::: :: he in :t le::t MOT T?.M0tY xithin th:

n:nt in h:::: : d ir COLO SE"TOOWN xithin th: fell ring 20 h:ur:.

b.

With the containment air lock interlock inoperable in one or mort _

containment air locks's 1

la Verify that at least one OPERABLE air lock door is closed in the affected air lock within one hour and restore the inoperable air lock interlock to OPERABLE status within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months or lock an OPERABLE air lock door closed'.

2.

Operation may then continue provided'that the OPERABLE air lock door is verified to be locked closed at least once Der 31 days.

3.

Otherwise 'be in at least HOT STANDBY within the next six hours and in COLD SHUTDOWN within the followina 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

i

,1 3 Seoarate ACTION entry is allowed for each air lock.

8 With both air locks inocerable, entry and exit is permissible for seven days under administrative controls.

' Entry and exit is permissible to perfonm repairs on the affected air lock i

components, i

Entry and exit is permissible under the control of a dedicated individual.

ARKANSAS - UNIT 2 3/4 6-4 Amendment No.

i

c.

With' one or more air locks inocerable for reasons other than those addressed in ACTION a. or b.:

.L Immediately initiate action to evaluate overall containment leakaae Der LCO 3.6.1.2.

2.

Verify that at least one door in the affected air lock is closed within one hour and restore the affected air lock to OPERABLE status within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

3.

Otherwise, be-in at least HOT STANDBY within the next six hours and in COLD SHUTDOWN within the followina 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

d.

The orovisions of specification 3.0.4 are not acolicable.

4.5.1.2

"::h ::ntairc.:nt ci 1::t :h ll b; '-- n:tz:ted ^""P?."i":

l ARKANSAS - UNIT 2 3/4 6-4 Amendment No.

o CONTAINMENT SYSTEMS SURVEILLANCE REOUIREMENTS fC: tint d) l 4:

Aft; :: 5 :;:ning, ::::pt rh:; th: ;i: 1::h i; i;ing n :d f :

=ritipi: : tri::, th:n :t 1:::t :::: p:: 72 h:ar:, by ::ifying :::1 1::h;;; n: ;;;;t:: th:n 175 ::/ninut: t:n th:

1---- i;tx::: th: d:::

1: i: p::::::i :d t:P. (50 prig; :nf th: ::t: i; d::::xin d by ith:: p::::::: d:::y f:: :t 1 ::t 15 minut:: :: by p ::i;i:n fi:=

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ictu;;; th: d::: :::1: :t : ::nct:nt p::::::: cf Si p;i r i

b.

At 1:::t :::: p:: 5 : th: by ::ndu: ting :n : :::11 ;i 1 :'t 1::h:g: t::t :t Pe (St p;ig; : d by :::ifying that th: :::::11

' ci: 1 :h 1::h:; ::t: i: rithir it: linit, :nd At 12::t :::: p:: S seeth; by v::ifying th:t :nly ::: d::: in

h ci: 1::h ::n 5: :p:n;d :t : ti;;.

4.6.1.3.1 Each containment air lock shall be d==^nstrated OPERABLE as9PERAALE+ee specified in 10 CP'R 50, Anoendix J, or as modified by accroved exemption't a.

By cor.ductina a door seal leak test with a seal leakaae rate of s 0.01 Lg when tested at 2 10 osia*,

b.

By conductina an overall air lock leak test with an overall_

air le:k leakace rate of s 0.05_La when tested at 2 P.,

and c.

The orovisions of Specification 4.0.2 are not acclicable.

4.6.1.3.2 Each containment air lock interlock shall be d*manstrated OPERABLE by testino the air lock interlock mechanism at least once per 184 49 M

Enc pti:n t: App:ndi

J" :f-10 Cir, 5 0.

Leakrate results shall also be evaluated aaainst the acceptance criteria of J

specification 3.6.1.2.

An incoerable air lock door does not invalidate the crevious successful performance of ths overall air lock leakace test.

If this surveillance comes due when the containment is not ooen, it may be deferred until the next entry into containment.

ARKANSAS UNIT 2 3/4 6-5 Amendment No.

?

{;

3/4.6 CONTAINMENT SYSTEMS BASES 3/4.6.1 PRIMARY CONTAINMENT 3/4.6.1.1 CONTAINMENT INTEGRITY Primary CONTAINMENT INTEGRITY ensures that the release of radioactive materials from the containment atmosphere will be restricted to those leakage paths and associated leak rates assumed in the accident analyses.

This restriction, in conjunction with the leakage rate limitation, will limit the site boundary radiation doses to within the limits of 10 CFR 100 during accident conditions.

3/4.6.1.2 CONTAINMENT LEAKAGE The limitations on containment leakage rates ensure that the total containment leakage volume will not exceed the value assumed in the-accident analyses at the peak accident pressure, Pa. As an added conservatism, the measured overall integrated leakage rate is further limited to s0.75 L. or 50.75Lt (as applicable) during the performance of the periodic tests to account for possible degradation of the containment leakage barriers between leakage tests.

The surveillance testing for measuring leakage rates are consistent with the requirements of Appendix "J" of 10 CFR 50.

3/4.6.1.3 CONTAINMENT AIR LOCKS The limitations on closure and leak rate for the containment air locks are required to meet the restrictions on CONTAINMENT INTEGRITY and containment leak rate.

Surveillance testing of the air lock seals provide assurance that the overall air lock leakage will not become excessive due to seal damage during the intervals between air lock leakage tests.

For the ourooses of this specification, the vertical end plates of the air lock barrel, on which the doors themselves are mounted, shall be considered part of the door.

ARKANSAS - UNIT 2 B 3/4 6-1 Amendment No.

ML20082D418

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