Text

Proposed Tech Specs Revising LCO 3.6.1.3, Containment Air Locks
	ML20106C935
Person / Time
Site:	Beaver Valley
Issue date:	09/16/1992
From:	; DUQUESNE LIGHT CO.
To:	;
Shared Package
ML20106C920	List: ML20106C917; ML20106C930; ML20106C935;
References
	NUDOCS 9210060448
	Download: ML20106C935 (22)
	v • d • e

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a.

ATTACllMEllT A-1 11eaver Valley Power Station, Unit llo. 1 Proposc1 Technical Specification Change llo, 199 Revise the Technical Specification as follows:

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DPR-66 l

.QONTAll{M2!1T SYSTEMS C_Q. C A I!I M.f l[T A I R L O C K S i

LIMITING CONDITICN FOR OPERATION 1

_.a 3.6.1.3 Each containment air lock shall be OPERABLE with:

a.

Both doors closed except when the air lock is being used for normal transit entry and exit through the containmer.t, then at least one air lock door shall be closed and b.

An overall air lock leakage rate of less than or equal to 0.05 L at P (40.0 psig).

a a

AEPLICl,BILITY:

MODES 1, 2,

3 and A.

On ono. or twere ceMeninmenh ad \\

N ACTION:

a.u.a.a With eno containment air lock door inoperable 4 mrM

,7-a.

1.

Maintain the associated OPERABLE air lock door closed V

and either restore the associated 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 associated OPERABLE air lock door closed.

2.

Operation may then continue until performan.ca of the next required overall air lock leakage test provided that the associated OPERABLE air lock door is verified to be locked closed at least once per 31 days.

l 3,

Otherwise, be in at least HOT STANDBY within the next 6

hours and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

4.

The provisions of Specification 3.0.4 are not applicable, b.

With a--oonta4nment cir leck inoperable,_ except as the result of an inoperable air lock door, maintain at leastg one air lock door closed; restore the inoperable air 4eek to OPERABLE status within 24-hours or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months 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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BEAVER VALLEY - UNIT 1 3/4 6-5 Amendment No.

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9 likk19hnRL.t _t.p "Cgntainnejlt_ Air Lkgkn" L22Et " 11" c.

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

Verify an OPERABLE door is closed in each affected air lock, within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months .

2.

Lock an OPERABLE doot closed (2) in each affected air lock within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

3.

Verify an OPERABLE door is locked closed in each al'fected air lock at least once per 31 days.

4.

Otherwise, be in at least !!OT STA11DBY within the next 6

hours and in COLD S!!UTDOW!1 within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

5.

The provisions of Specification 3.0.4 are not applicable.

(2)

Entry and exit of containment is permissible undnr control of a dedicated individual.

DEAVER VALLEY - UllIT 1 (Proposed Wording) l

/

S DPR-66 CONTAINMENI_ SYSTEMS 1

SURVEILLANCE REQUIREMENTS 4.6.1.3 Each containment air lock shall be demonstrated OPERABLE:

a.

Within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months following each containment

entry,

)

except when the air lock is being used for multiple j

ontries, then at least once per 72-hours, by verifying

)

no detectable seal leakage when the gap between the door seals is pressurized for at least 2 minutes-tc:

1.

Personnel airlock 2 40.0 psig 2.

Emergency air lock 2 10.0 psig or, by quantifying the total air lock leakage to ensure the requirements of 3.6.1.3.b are met.

b.

By conducting overall air lock leakage tests, at not less than P

(40.0 psig), and verifying the overall a

air lock leakage rate is within its limit:

4 (3T 1.

At least once per 6 months,jN(and 2.

Upon completion of maintenance which has been performed on the air locP that could affect the air lock scaling capability.>r c.

At least once per 18 months during shutdown by verifying:

1.

Only one door in each air lock can bc opened at a time, and 2.

No detectable seal leakage-when the volume between the emergency ait lock shaft seals is pressurized to greater than or equal to 40.0 psig for at least 2 minutes.

(31 h)A' The provisions of Specification 4.0.2 are not applicable.

r Exemption to Appendix J of 10 CFR 50, dated November 19, 1984.

b l.

DEAVER VALLEY - UNIT 1 3/4 6-Sa Amendment No.

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4 ATTACllMENT A-2 Beaver Valley Power Station, Unit flo. 2 Proposed Tec;inical Specification Change ilo. 66 Revise the Technical Specification as follows:

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IJPF-7'3 CCNTAIN9ENT 515 FEM 5 CCNTAIN9ENT A M LOCKS LIMITING __C01ni ngN Fog opERATicN_

3.6.1.3 Each containment air lock shall be OPERABLE with-a.

Both doors closed except when the air lock is being used for normal transit entry and exit through the containment, then at least one air lock door shall be closed, and b.

An overall air lock leakage rate of less than or equal to 0.05 L at a

P, (44.7 psig).

APPLICABILITY:

H0 DES 1, 2, 3 and 4.

' n era or m ort c eeMammen\\ uir lodi i

ACTION:

b a.

With one containment air lock door inoperableV m Sp.y g" 1.

Maintain the associated OPERABLE air lock door close' and d

either restore the associated inoperable air lock door to OPERABLE status within 24 aours or lock the associated OPERABLE air lock door closed.

2.

Operation may then conti'iue until performance of the next l

required overall air lock leakage test provided that the associated OPERABLE air lock door is veri'ied to be locked closed at least once per 31 days.

3.

Otherwise, be in at least HOT STANCBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

4.

The provisions of Specification 3.0.4 are not applicable.

b.

WithbontC"

'- ' inoperable, except as a result of an. g gg inoperable air leck door, maintain at leastJne air lock door closed; restore the inoperable air % k to OPERABLE status within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in l

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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BEAVER VALLEY - UNIT 2 3/4 6-4 N6/fo W

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i ht.tAchment to "contfLinnent Air Lockn" Interi. "15".

c.

With the containment air lock interlock mechanism inopera51e in one or more containment air locks:

1.

Verify an OPERABLE door is closed in each affected air lock, within I hour.

2.

Lock an OPERABLE door closed (2) in each affected air lock within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

3.

Verify an OPERABLE door is locked closed in each affected air lock at least once per 31 days.

4.

Otherwien, be in at least ilOT STAllDBY within the next 6

hours and in COLD SHUTDOWil within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

5.

The provisions of Speci fi :ation 3.0.4 are not applicable.

(2)

Entry and exit of containment is perr..issible under control

+' a dedicated ir.dividual.

a b

/

BEAVER VALLEY - UtilT 2 (Proposed Wording)

HPF-73 i

CONTAINPENT SYSTEMS M [!1LSICE ?J 31REE!il5

4. 6.1. 3 Each containment air lock shall be demonstrated OPERABLE:

a.

Within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months following each containment entry, except when the f

air lock is being used for multiple entries, then at least once per 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months , by verifying no detectable seal leakage when the gap between the door seals is pressurized ~for at least 2 minutes to:

1.

Personnel airlock 1 44.7 psig 2.

Metgency air lock 1 10.0 psig or, by quantifying the total air lock leakage to insure the requirements of 3.6.1.3.b are met, b.

By conducting overall air lock leakage tests, at not less than P 8

(44.7 psig), and verifying the overall air loce leakage rate is within its limit:

1.

At least once per 6 months, K and 2.

Upon completion of maintenance which has been performed on the air lock that could affect the air lock sealing capability.

(g At least once per 18 months during shutdown verifying:

c.

1.

Only one door in each air lock can be opened at a time, and 2.

No detectable seal leakage when the volume between the emergency air lock shaf t seals is pressurized to greater than or equal to 44.7 psig for at least 2 minutes.

WX The_ provisions of Specification 4.').2 are not applicable.

M Exemption of Appendix J of 10 CFR 50 f fropOI U ttb BEAVER VALLEY - UNIT 2 V4 6 i i

I ATTACHMENT B Deaver Valley Power Station, Unit Nos. 1 and 2 Proposed Technical Specification Change No. 199 and 66 REVISION OF Specification 3.6.1.3 Titled " Containment Air Locks" e m q3rym-

-s.

A.

DESCRIPTION OF A!!ENDMENT REQUEST The proposed change would revise Limiting Condition For Operation (L.C.O.)

3.6.1.3 titled

" Containment Air Locks."

The L.C.O.

action statements would be revised to reflect the condition when one or more air locks are af fected by inoperable coraponents.

A new action statement "c" would be added to provide guidance for the condition where the containment air lock interlock mechar.Lsm is inoperable.

Two footnotes would be added to the L.C.O.

action statements.

The first footnote would apply to action c.Latement "a"

and would allow entry and exit through the outer operable air lock door to perform repairs on the inner inoperable air lock door.

The second footnote would apply to action statement "c" and would allow entry and exit of containment through the air lock provided a

dedicated individual ensures tuat only one air lock door is opened at a

time.

The proposed and existing footnotes would be designated by numbers instead of symbols to ensure correct application of each footnote.

B.

DACKGROUND Both Beaver Valley Power Station (BVPS) Unit 1 and 2 have two separate containment air locks.

Each air lock is a circular cylinder with doors at ecch end which are interlocked to prevent cimultaneous opening.

Each air lock door has been designed and tested to certify its ability to withstand a pressure in excess of the maximum expected pressure following a

design basis accident (DBA) in containment.

As such, closure of a single door assures that the containment is operable.

Each of the doors contain double o-ring seals and local leakage testing capability to ensure pressure integrity.

For an air lock to be considered

operable, the air lock interlock mechanism must be operable, the air lock must be in compliance with Type B leakage limits, and both air lock doors must be operaole.

C.

JUSTIFICATION The proposed revision to L.C.O.

3.6.1.3 action statements would reflect that BVPS Unit 1

and 2 each have two containment air

locks, (i.e.,

personnel air lock and emergency air lock).

The current wording of L.C.O.

3.6.1.3 sction statements only pertains to a

single component being inoperable.

A condition where two doors on two separate air-locks are inoperable is not addressed by the present L.C.O.

wording.

The proposed change will clarify this configuration.

Containment integrity will con'inue to be maintained with a single operable door in the closed position.

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i ATTACHMENT B, continued Proposed Technical Specification Change Nos. 199 and 66 Page 2 A

footnote would be added to L.C.O.

3.6.1.3 action "a" to clarify i

that entry and exit is permissible through a maintained closed or locked closed operable door for the purpose of repairing the inoperable inner door.

The L.C.O.

action statement requires that the remaining operable air lock door be maintained closed and locked closed after a 24 hour2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months period has elapsed.

If the inner air lock door is inoperable, then the outer door must be maintained locked closed and the strict interpretation of this action statement would not permit the outer door to be opened at any time while under the guidence of this action statement.

Without the clarification provided by the proposed footr.ote, repair of the inner door on the personnel air lock would pose additional safety risks and increase 6 radiation exposure to maintenance personnel attempting a

containment entry via the emergency-air lock.

The emergency air lock was added for safety concerns to provide a

second means of egress from containment.

Ingress through the emergency air lock is posFible, however, its function is to provide an emergency exit route.

Under a

emergency condition, rapid egress is required to facilitate medical treatment of injured personnel, if required.

Therefore, the emergency air lock is designed to quickly equalize the differential pressure between the inside of the air lock and the outside atmosphere.

This rapid equalization has resulted in ruptured car drums and general personnel discomfort.

Also, personnel using the emergency air lock are exposed to higher radiation fields due to the lack of a shield wall between the air lock and the reactor vessel area.

The containment crane wall, which provides shielding for the personnel air lock, is open in the area of the emergency air lock.

A similar footnote was approved for Virginia Electric and Power Company for North Anna Power

Station, Jnit Mos. I and 2 under amendment nos. 75 and 62 respectively.

A new action statement "c"

would be added to L.C.O.

3.6.1.3.

This action item would provide compensatory measures in the event i

an air lock interlock mechanism is inoperable. _ Action statement-

"c" compensates for the interlock mechanism being inoperable by precluding any situation where the interlock would be required to

~

operate.

Administrative controls would be substituted for the design feature o f-the interlock.

The administrative controls consist of locking closed one operable door and the use of a l

dedicated individual to ensure that at least one operable air lock duor is maintained closed should passage through the air lock be required.

A condition where the containment air lock interlock is inoperable is not addressed by the-present L.C.O.

wording.

Since the plan +

is in a safe condition with the air i

lock interlock inoperable, p23 sage through the air-lock utilizing administrative controls ensures that one air lock door is maintained closed and that containment-integrity will continue to be maintained with a single operable door in the closed position.

i The two existing footnotes would be designated by numbers instead I

of-symbols to ensure correct application of each footnote.

This change is administrative in nature and doec not change the intent or applicatio; of the footnotes.

- ~.

5TTACHME!!T B, continued Proposed Technicai Speci f icat ion Change !!on. 199 end 66 Page 3 D.

S AIT.TY AllALYSIS

'I h e proposed revisions to L.C.O.

3.6.1.3 will continue to ensure that each containment air locr. will perform itc safety function as part of the containment to control offsite radiation evoosures rerulting from a

design baces acci' lent (DBA).

The structural integrity and leap.

tightneso vill not be changed as a result of thin propoced revision.

The addition of the wording "in one or more containment air locks" is administrative in nature and does not affect plant catety.

The addition of the footnote, to action ctatenent "a"

to 7110w entry and exit to perform repairs of the inner air lock door, will not significantly reduce the level of plant uafety.

During the period of time when the outer air lock

~

door is

open, for entry or exit, the remaining inoperable door nay not provide the degree of leak tightness as required by technical specitications.

Due to the subatmospheric design of BVPS containment building (s),

the inner air lock door must be closed and in-leakage limited in order to allow the outer door to be opened.

A difforential pressure of approximately 5 psid exints between the containment and outside plant areas.

Also, the design of the inner door is such that the containment pre'.sure resulting f rom a DBA will iend to improve the door leak tightness during the period of time when an inner air lock door is inoperable and the outer door is open.

The probability for an event requiring containment integrity occurring during the 1imited t i.mo when at l<. a s u one operable door is no: closed is quiticiently low to justify limited access for sholt Jurations when required.

Therefore, based on the above, the addition of the teotnote to action "a"

will not significently affect the ability of the air lock to perform its intended function.

The addition of action statement "c" will ensurc that at least one operable door is maintained closed should the air lock i

interlock mechanism be inoperable.

This action compensates for the interlock mechanism being inoperable by precluding any situation where the interlock would be required to operate.

Administrative controls are substituted for the design feature of the interlock.

Therefore, the compensatory measures provided by the proposed action statement "c" will continue to ensure that containment integrity is being maintained while the air lock is being used.

With one operable door maintained closed, the containment will function, as assumed, to prevent the release of radioactive materials under the maximum post accident containment pressure.

Therefore, this change is considered scfe based on 1) the continued ability of the containment air locks to provide a leak tight

barrier, under rwxinum post accident containment pressure, to prevent the release of radioactive materials from a DBA to ensure the limits established by 10 CFR 100 are not exceeded, or 2) the low probability of a

DBA occu" ring during momentary opening at outer air lock door to facilitate repairs to the inner door.

~.

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$TTACHMEllT B, continued Proposed Technical Specification Change fios. 199 and 66 l

Page:4.

E.

110 SIGli1 FICA!1T HAZARDS EVALUATION The ne significant hazard considerations involved with the proposed amendment have been evaluated, focusing on the three standards set forth in 10 CFR 50.92(c) as quoted below:

The Commission may make a final determination, pursuant to the procedures in paragraph 50.91, that a proposed amendment to an operating license for a

facility licensed under paragraph 50.21(b) or paragraph 50.22 or for a testing facility involves no sign ficant hazards consideration,-if i

operation of the facility in accordance with the proposed amendment would not:

(3)

Involve a

significant increase in the probability or consequences of an accident previously evaluated;-or (2)

Create the pocsibility of a new or different kind of accident from any accident previously evaluated; or (3)

Involve a significant reduction in margin of safety.

The f-1 towing evaluation is provided for the no significant hazarc

.onsideration standards.

1.

Does the change involve a

significant increase in the probability or consequences of an accident previously evaluated?

I l

The probability of occurrence of a

previously evaluated accident is not increased because the containment air locks do not effect the initiation of any design basis accident.--

The consequences of an accident are also not'significantly increased because the proposed revisions to the -action statements will continue to ensure that at least one door in each air lock is maintained closed.

A single door in each:

air lock is capable of withstanding a pressure in excess of the maximum expected pressure following a

DBA..

The structural integrity and leak tightness of the containment.

will not be-changed -by this_ proposed revision.

For the brief period of time that an outer air lock door is open and i

the inoperable inner door is providing. the single I

containment

barrier, the consequences of. accident may be increased.

However, the probability of an event occurring requiring containment integrity-is sufficiently remote 1 to=

justify limited access when required to repair the inner door.

I Therefore, based on the continued ability of the. containment air locks to provide a

barrier to limit leakage from L

con;ainment during a

DBA, this proposed-change does not involve a

significant increase in the probability or-consequences of an accident previously evaluated.

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ATTACHMENT B,-continued Proposed Technical Specification Change Hos. 199 and 66 Page 5 2.

Does the change create the possibility of a new or different kind of accident from any accident previously evaluated?

r Air lock operation does not interface with the reactor coolant pressure boundary or any other mechanical or electricci controls which could impact the cperations of the reactor or its direct support systems.

containment air locks are designed for the purpose of containment entry and exit.

During this operation, the air lock maintains containment integrity by providing at least one door which is capable of providing a leak tight barrier

)

during a DBA.

The proposed changes will continuo to ensure that air lock u,Jeration is performed as assumed in the original design of the plant.

During the period when the outer door is-open and the inner door is inoperabic, at laast one door is being maintained closed as designed.

This condition is ensured i

due to the subatmospheric conditions that exists during plant operation.

The outer air lock door can not be opened unless the inner door is closed due to the 5 psi pressure differential that exists The outer air lock door would only be cpened long enough to allow personnel to enter the air lock.

Therefore, this proposed.

change does. not create the possibility of a new or different kind of accident from any accident previously evaluated.

3.

Does the change involve a significant reduction in a margin of safety?

The-applicable margin-of safety consists.of maintaining the primary' containment leak rates within the assumptions of the i

DBA analysis.

These leak rates are maintained provided at least one operable air lock door remains closed during the event.

The proposed revisions will-continue to ensurc~that at least one air lock door is maintained closed.

During the brief period of time that an outer air lock doorcis open and the inoperable inner door is providing thic single containment barrier,-

the margin of safety is decreased. --Tne inoperable inner --door 'may - not -limit containment-leak rates:withiu-the assumptions of. the DB.s analysis.

However, the probability of an event requiring-the inner air lock-door to limit containment-leakage occurring during this -time period-is sufficiently low and the overall margin of safety would not be decreased by a significant amount.

Therefore, this proposed change does not involve

.a significant reduction in a margin of safety.

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.d.

E ATTACl! melit D, continued Proposed Technical Specification Change lios. 199 and 66 Page 6 i

F.

110 SIG!!IFICA!!T llA4ARDS COllSIDERATIOld DETER!4TilATIOli f

Based on the considerations expressed above, it is concluded that the activities associated with this 1.conse amendment request satisflas the no sigulficant hazards consideration standards of 10 CFR 50.92(c)

and, accordingly, a

no -significant hazards consideration finding is justified, s

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r, ATTACliMEllT C-?.

13eaver Valley Power Station, Unit 110. 1 Proposed Technical Specification Change 110. 199

=

Typed Pages:

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DPR-66 CEllh]UMM(TlT STlE3 99102ILMULLAULLQGILG Ll!41T111G Col:DIT10!1 1 OR OPERATIO!1 w

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3.6.1.3 Each containment air lock chall be OPERABLE with:

n.

Both doorn cloced except when the air lod ic being used for norna) trancit entry and exit thrcuc,h the containment, then at leant one air lock door chall be closed and b.

An overall air lock leakage rato of lean than or equal to 0.0D L at P (40.0 psig).

a a

bl!PLLCAMILITY :

ISOD ES 1,

2, 3 and 4.

ACTJoll:

a.

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

containment air locko:

1.

flaintain the accociated OPERABLE air lock dear closed

.i n each atlected air lock and either restore the l

annociated inoperable air lock door to OPERABLE status within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months o

lock the associated OPERIsBLE air lock door cloned.(1)r 2.

Operation may then continue until performance of the ne >:t requf. red overall air lock leakage test provided that the accociated OPERABLE air lock door is verified to be locked cloned at least once per 31 days.

3.

Otherwise, be in at least !!CT STAllDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SilUTDOU!1 within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

4.

The provinions of Specification 3.0.4 are not applicable.

b.

With one or more containment air locks 'noperable, except La l

the result of an inoperable air l~ k door, maintain at least one air lock door clc. sed; restore che inoperable air lock (s) to OPERABLE status within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months or be in at least ilOT STA!!DBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD S!!UTDOW11 within the 1ollowing 30 houro.

I Entry a.id exit is permissible to perform repairs et the inner air lock docr.

BEAVER VALLEY - UlllT 1 3/4 6-5 Amendment 113.

(Proposed Wording)

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DPR-66 j

..CQllTAl]1lilillT SYSTQM LIMITING CONDITION FOR OPERATION

-m m ACILON: (Cmitim! mil c.

With the containment air lock interlock me hanism incperable in one or Irore containment air locks; 1.

Vorify an OPERABLE door is closed in each affected air lock, within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months .

2.

Lock an OPERABLE door closed (2) in each affected' air lock within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

3.

Verify an OPERABLE docr is locked closed in-each affected air lock at least once per 31 days.

4.

Otherwise, be in at least HOT STANDBY within the next 6

hours and in COLD S!!UTDOWN within the following 30

.i hours.

5.

The provibions of Specification 3.0.4 are not applicable.

{

Sth EILLANCE REQUIREMENTS

- m __

-~

4.6.1.3 Each containment air lock shall be demonstrated OPERABLE:

a.

Within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months following each containment

entry, except when the air lock is being-used for multiple

entries, then at least once per 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months , by verifying no detectable seal leakage when the gap between the door seals is pressur!.zsd for at least 2 minutes to:

1.

Personnel air lock 2 40.0 psig 2.

Emergency air lock 2 10.0-psig or, by quantifying the total air lock leakage co ensure the requirements of 3.6.1.3 b are met, i

b.

By conducting overall air' lock leakage tests, at not less than P

(40.0 psig), atid verifying the overall a

air lock leakage rate is within its. limit:

l 1-At least once per 6 months,(3) and (2)

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

(3)

The provisions of specification 4.0.2 are not applicable.

BEAVER VALLEY - UNIT 1 3/4 6-Sa Amendment No..

(Proposed Wording)

9 s

1 DPR-66 COMTAIllliEll? _ SYSf2ig SURVEILLA!1CE REQUIPE!4E11TS (Continued)

m. -

2.

Upon completion of maintenance which has been performed on the air lock airlocknealingcapability.gatcouldaffectthe l

c.

At least once per 18 months during shutdown by verifyintj:

1.

Only one door in eac. air lock can be opened at a time, cnd 2.

11 o detectable seal 1cakage when the volume between the emergency air lock shaft seals is pressurized to greater ihan or equal to 40.0 psig for at least 2 minutes.

1 (4)

Exernpti on to Appendix J

of 10 LTR 50, dated flovember 19, 1984.

BEAVER VALLEY - UllIT 1 3/4 6-Sb Amendment No.

(Proposed Wording)

=

-1

.b

__..... _ ____ _.. _ - -~._-.. _ _ _.. _ _ _ _... _ _ _ _.. _. _.

2 ATTACllMEllT C-2 Beaver Valley Power Station, Unit No. 2 Proposed Technical Specification Change 11o. 66 Typed Pages:

3/4 6-4 3/4 6-5 3/4'6-Sa I

f 6

I i

e

?

e 7

m b

e-.-.

..--.......s-s.

.-,_ __,~._

m.....--

..__....--,m._.,w m.-._,_1-..-_

m

_ -,u....

e.,..,,-,,.

r

,,,-v..,c..

.w e,

v-

_ _ _.. _. _ _ _ _ _ _ _. _ _. _. _ _. _ ~. _ _ _.. _. _ _. - _. - _ _.. _ _

s NPP-73 col! Tall!MEllT EYl!TEMS Cpf!Ihn!11ENT 6D1_LQCEli LIMITING CO!1DITION FOR OPERATION

_.n.

- _. = _...

3.6.1.3 Each containment air lock shall be OPERABLE with:

i a.

Both doors closed except when the air lock is being used i r normal transit entry and exit through the containment, then at least one air lock door shall be closed, and i

b.

An overall air lock Icakage rate of lest than or equal to 0.05 L at P (44'7 PSI 9)*

I a

a APPLICAB_U J G:

MODES 1, 2,

3 and 4.

+

ltCT191D a.

With one containment air lock door inoperable ir one or l

more containment air locks:

I 1.

Maintain the associated OPERABLE air lock door closed in each affected air lock and either restore the l

associated inoperable air lock door to OPERABLE status witnin 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months r

lock the associated OPERABLE air lock door closed.(1 l.

2.

Operation may then continue until performance of the next required overall air lock leakage test provided that the associated 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 i

6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD-SHU'1DOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

4.

The provisions of Specification 3.0.4 are not applicable, b.

With one or more containment air locks inoperable, except I

as the result of an inoperable air lock' door, maintain at-least one air lock door clot d; restore the inoperable air lock (s) to OPERABLE status within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months or be in e.t least HOT STANDBY within the next 6

hours and in COLu SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

1)

Entry and exit is permissible to perform repairs of the inner air lock door.

l BEAVER VALLEY - UNIT 2 3/4 6-4 Amendment No.

i (Proposed Wording) j 1

...,[.,

'..y,

,_,,._,~,,..-m.._cm........

.R.....A.

~_ _ _._

l t.

.NPF-73 CDETAlHMENT SYSTEMS LIMITING CONDITION FOR OPEIUsTION ILCT.lQR: (Contjnued),

c.

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

1.

Verify an OPERABLE door is closed in each affected air lock, within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months .

2.

Lock an OPERABLE door closed (2).in each affected air lock within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

3.

Verify an _ OPERABLE door is

'ocked closed _ in each affected air lock at least once per 31 days.

4.

Otherwise, be in at least ilOT STANDBY within the next 6

hours' and in COLD SHUTDOWN Vithin the following 30 I

hours.

5.

The provisions of Specification 3.0.4 are not applicable.

SURVElLLANCE REQUIREMENTS 4.6.1.3 Each containment air lock shall be demonstrated OPERABLE:

a.

Within-72 hours following each containment

entry, except when the air lock is being used for multiple

entries, then at least-once per_72 hours,-by verifying no detectable seal leakage when the gap between the door seals is pressurized for at least 2 minutes to:

1.

Personnel air lock 2 44.7 psig 2.

Emergency air lock 2 10.0 psig or, by quantifying _the total air lock leakage to insure the requirements of-3.6.1.3.b are met.

b.

By conducting overa;I air lock leakage tests, at not less than P

(44.7-psig), and verifying the overall 1

a air lock leakage rate is within-its limit:

1.

At-least once por 6 months,(3) and.

(2)

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

'(3)

'The provisions of Specification 4.0.2 are not applicable.

BEAVER-VALLEY - UNIT 2 3/4 6-5 Amendment No.

(Proposed Wording) l l'

4 IIPI'-7 3 9D11TAJEMDil_DXSILMS SURVEILLAllCE REQUIRE!4ENTS (Continued) n=.---..-

= = = - -.. -

=

=, - - - - - -

_z.-

.a e.

Upon completion of naintenance which has been performed on the air lock iat could affect the air lock coaling capability.(

l c.

At least once per 18 months during shutdown by verifying:

1.

Only one door in each air lock can be opened at a ti e,

and 2.

!J o detectable seal leakage when the volume

~

between the emergency air lock chaft seals is pressurized to greater than or equal to 44.7 psig for at least 2 ninutes.

(4)

Exemption of Appendix J of 10 CFR 50.

l BEAVER VALLEY - UNIT 2 3/4 6-Sa Amendment No.

I (Proposed Wording)

_

ML20106C935

Text

. = = = =. = = = = =

=

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