ML20149K222

Proposed Tech Specs,Reflecting Mod of Leakage Rate Requirements for Main Steam Lines Until End of Operating Cycle 6

ML20149K222
Person / Time
Site:	Perry
Issue date:	02/17/1996
From:	CENTERIOR ENERGY
To:
Shared Package
ML20149K220	List: ML20149K222 PY-CEI-NRR-2027, Application for Amend to License NPF-58,changing TS to Reflect Mod of Leakage Rate Requirements for Main Steam Lines Until End of Operating Cycle 6
References
NUDOCS 9602220049
Download: ML20149K222 (3)

Text

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AttcClument 2 PY-CEI/NRR-2027L

. - Page 1 of 1 CONTAINMENT SYSTEMS PRIMARY CONTAINMENT LEAKAGE LIMITING CONDITION FOR OPERATION 3.6.1.2 Primary containment leakage rates shall be limited to: I a.

$g% l An overall integrated leakage rate, except for the main steam line isolation valves #, of less than or equal to 0.75 L where L is 0.20 d kh$5 u  ;

percent by weight of the primary containment aire p,,r 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />,s at P,. 30g 1

{ ,

b. aw A combined penetrations and leakage all valves, exceptrate of for less than line main steam for all to 0.60 L,i or equal g"#S j I solation A  % i valves # and valves which are hydrostatically leak tested, subject to Type B and C tests when pressurize u!T 1.*4 y . '

c. Less than or equal to 25 scf per h any one main steam line through the isolation valves when tested at P,. $0#

,e{$f d.

A combined leakage rate of less than or equal to 0.0504 L, for all m 8 % b'() i penetrations that are secondary containment bypass leakage paths when o d e o.

pressurized to the required test pressure. gV4  ;

e.

Ye0# l A combined leakage rate of less than or equal to 1 gpm times the gyew '

total number of containment isolation valves in hydrostatically tested lines which penetrate the primary containment, when tested at 8*5h

, I w, ,o greater than or equal to 1.10 P,.

APPLICABILITY:

jglc ,

OPERATIbNAL CONDITIONS 1, 2, AND 3, with the reactor coolant e )

system temperature greater than 200 'F.

ACTION:

• g y *$ {

i J j,5 o With: a.

The measured overall integrated rimary centainment leakage rate, l except for the main steam.line i$olation valves #, exceeding or ,ag0 0.75 L

b. 3 egg The measured combined leakage rate for all penetrations and all a n .c a g"uo .

valves except for main steam line isolation valves # and valves which

1. . 8.

are hydrostatically leak tested, subject to Type B and C tests & .

exceeding 0.60 L,, or j% $" I '

c c.

The measured leakage rate. exceeding 25 scf per h ur Jg f any one main

""agg!

Id8 steam line through the isolation valves, or gea,jj" i

d. a j The combined leakage rate for all penetrations that are secondary )  !

containment bypass leakage paths exceeding 0.0504 L,, or i 1 i s

s Exemption to Appendix J of 10 CFR 50. J

~

PERRY - UNIT 1 3/4 6-3 Amendment No. (i, H , (q, 76 9602220049 960217 PDR p

ADOCK 05000440 #

PDR k

E qw.g. -

Att:ctunent 3

'pr-CEI/NRR-2027L Page 2 cf 1 PCIVs

. - 3.6.1.3 SURVEILLANCE REQUIREMENTS (continued)

]

SURVEILLANCE FREQUENCY SR 3.6.1.3.9

' ------------------NOTE-------------------

Only required to be met.in MODES 1, 2, and 3.

Verify the combined leakage rate -for all -----NOTE------

secondary containment bypass leakage SR 3.0.2 is not paths is s 0.0504 L, when pressurized to applicable 2 P, . ---------------

In accordance with 10 CFR 50, Appendix J, as modified by approved exemptions SR 3.6.1.3.10 ------------------NOTE-------------------

3 Only required to be met in MODES 1, 2, and 3.

Verify leakage rate through each main ----NOTE-----

steam line'is s 25 scfh when tested at SR 3.0.2 is

~

~

a plicable Until the end of Operating cycle 6, the leakage rate through one main steam gg line is limited to s 35 scfh when 10 CFR 50 tested at Pa, as long as the total leakage rate through all four main AppendiXb steam lines is s 100 scfh. as modified by approved N exemptions (continued)

PERRY - UNIT 1 3.6-18 Amendment No. 69

.~ _ _

1 Attachment 4 i PY-CEI/NRR-2027L Page 1 of 1 SIGNIFICANT BAZARDS CONSIDERATION The standards used to arrive at a determination that a request for amendment j involves no significant hazards considerations are included in the Commission's  ;

Regulations, 10CFR 50.92, which state that the operation of the facility in l accordance with the proposed amendment would not (1) involve a significant increase in the probability or consequences of an accident previously evaluated,  ;

(2) create the possibility of a new or different kind of accident from any previously evaluated, or (3) involve a significant reduction in a margin of J safety.

The proposed amendment has been reviewed with respect to these three factors and it has been determined that the proposed change does not involve a significant hazard because:

1. The proposed change does not involve a significant increase in the probability or consequences of an accident previously evaluated. l The proposed TS change requests a relaxation of the leakage rate

, requirements for one main steam line while preserving the overall leakage rate limit for the main steam line penetrations. The proposed leakage rate I limit is well below any steam line leakage rate that is used as an accident assumption, and the proposed change would not increase the probability that a steam line rupture would occur. Therefore, the probability of an accident previously evaluated has not changed. In addition, the proposed j overall leakage rate limit is the leakage rate limit used in the accident l analysis, and that limit is not being changed by this proposal. Therefore,  ;

the proposed change does not increase the consequences of an accident i previously evaluated. l

2. The proposed change vould not create the possibility of a new or different kind of accident from any previously evaluated.

The proposed change increases the allovable leakage rate for one main steam line, without changing the combined leakage rate for the four main steam lines. This request does not change the method for operation of the plant.

Thus the requested change cannot create the possibility of a new or different kind of accident from any previously evaluated.

3. The proposed change vill not involve a significant reduction in the margin of safety.

The proposed change does not revise the overall leakage rate permitted in the present Specifications for leakage through the main steam lines. An increase in the leakage rate of any one main steam line is not considered in any accident analysis. It is the combined main steam line penetration 3 leakage rate that is assumed in the accident analysis. Thus, since this assumed leakage rate is not being revised, the proposed change does not involve a significant reduction in the margin of safety.

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