ML20059G381

Proposed Tech Specs Re Surveillance Requirement 4.0.2, Changing Pages 3/4 0-2,B 3/4 0-3 & B 3/4 0-3a

ML20059G381
Person / Time
Site:	Calvert Cliffs
Issue date:	08/28/1990
From:	Creel G BALTIMORE GAS & ELECTRIC CO.
To:
Shared Package
ML20059G379	List: ML20059G374 ML20059G381
References
NUDOCS 9009120277
Download: ML20059G381 (3)

Text

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LIMITING CD'DITION N FOR OPERATION c .

1. At:least HOT _ STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />, *

2. At least HOT = SHUTDOWN within the following.6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />,-and-

3. At least COLD SHUTDOWN within'the subsequent 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

This specification is not applicable-in MODES 5 or 6.- ,

SURVEILLANCE REOUIREMENTS-l 4.0.1 Surveillance-Requirements shall be applicable during.the OPERATIONAL l

MODES or other conditions specified for individual Limiting Condition.s for 1

Operation unless otherwise stated:in an' individual Surveillance Requirement.

4.0.2 tispe interval Eachwi Surveillance Requirement hX 4. mandmor e2//c sh]a 1. be/.perfonned'within

_ d5t un.flen na/ -h ok:eed theMjaerewd-specified of #e- e

.weve///dMe. Inkwed. _ -

n a,;x h a e,,w e.,e ext;a;ica a;. t; ;;;;;d 15% if ti: .t i;d ;;r..;

intervel, end

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-b. The ::rbined-ti= interv:1 for :ny 2 cen::: tive :"rveill ::: .

intervel; act te ;;;;;d 3.25 ti ;f th; ;;;;ifi;d : Cry;ill ::;-

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( ' 4.0.3 Failure to perform a Surveillance Requirement within the allowed s surveillance interval, defined by Specification 4.0.20 shall constitute zN noncompliance with the OPERABILITY requirements for a Lim"a Condition for s l Operation. The time limits of the ACTION requirements v s'icable at the s l time it is identified that a Surveillance Requirement bs < 7en performed, s

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However, this time of applicability may be delayed for .. 'e hours to '

s permit the completion of the surveillance when. the allow'- rstage time s limits of the ACTION requirements are less.than 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. Lurveillance \

'fquirements do not have to be performed on-inoperable equipment.

4.0.4 Entry into an OPERATIONAL MODE or other specified condition shall not be made unless the Surveillance Requirement (s) associated with the Limiting Condition for Operation have been performed within the stated. surveillance . . i interval or as otherwise specified. 'This provision shall not prevent' passage ,\ i through or to OPERATIONAL MODES as required-to comply.with ACTION q !

requirements. 5 4.0.5 Surveillance Requirements for inservice inspection and testing of ASME a Code Class 1, 2, and 3 components shall be applicable as follows: 4 I

CALVERT CLIFFS - UNIT 1 3/4 0-2 Amendment: No. J2 141

\ CALVERT CLIFFS - UNIT 2 Amendment No. JJ 124 9009120277 900B2B [ s PDR ADOCK 05000317 1 '

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mean that for one division the emergency power source must.be OPERABLE (as ..

must be the components supplied by the emergency power source) and all redun-

- dant systems, subsystems, trains, components and devices.in the.other division

! must be OPERABLE or likewise satisfy Specification 3.0.5 (i.e. ' be capable of  ;

l performing-their design functions and'have an emergency power source OPER-ABLE). In-other words, both emergency power sources must be OPERABLE and all' .

redundant systems, subsystems, trains, components and-devices in both divi-sions must also be OPERABLE. If these conditions-are not satisfied, action is requi.ed in accordance with this specification.

In MODES 5 or 6 Specification 3.0.5 is not applicable, and thus 'the

- individual ACTION statements for each applicable Limiting Condition for-Operation in these MODES must be. adhered to.

. 4.0.1 This specification provides that surveillance activities necessary r to insure the Limiting Conditions for Operation are met and will be performed during the OPERATIONAL MODES or other conditions for which the Limiting Conditions for Operation are applicable. Provisions for a6fitional- surveil-  !

lance activities to be performed without regard to the applicable OPERATIONAL-MODES or other conditions are provided in the individual Surveillance Require-ments. Surveillance Requirements for Special Test Exceptions'need only be performed when the Special Test Exception is being. utilized.as an' exception to  :

an individual specification. ~

"m 4.0.2 Th; previ:i::: :f thi: :p::ift::ti:n pr vid: :11:= 51: tel:r:::::

( f;r p;. .en.ing ;;rveill;a;; ;;tiviti;; bayer.d ths;; ;;;;ified in the r.  ;;.;1

.. 1.;il.ns. i . n. . , 1.1 . Th ;; t;ierea;;; er; ;;;;;;;ry t: pr:;id: :;:nti:::?-

::ibt'ity b ::u:: ef : hede1%; and perf: ine certideratient. Th: 7 5 tr

";t 1;;;t" e;;;;i;;;d with ; ;;rv;ill:n;: fr:;;;;;; d::: ::: ::;:t: th 4 algib'e

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.s grigt yelue :nd p -it: the p:rf: =:n:: of ::r: fr:;;;;t ;;r

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7MMM M Ah The t;ieren;; vel;;;, td;n ;ith;r individ;;ily Or :;;;;;;tiv:1) ;;;r i t :t i-t:rvm, :n :;ffi;i;;;i) r;;tri;tiv; t; er.;;re th;t the reliebility l  :::::i;;;d with th; :;r;;ill:::: ::tivity i: ::t :i; 'fi:::tly 6;r d 5:y: d-L th;; ;tt;in;d in; th; a;;in;lj;;;ifi;d igtv;l r _ _

4.0.3 This specification establishes the failure to perfort a s Surveillance Requirement within the allowed surveillance interval, defined by ,/

the provisions of Specification 4.0.2, as a condition that constitutes a s failure to meet the OPERABILITY requirements for a Limiting Condition for. s Operation. Under the provisions of this specification, systems and components \

are assumed to be OPERABLE when Surveillance Requirements have been N satisfactorily performed within the specified time interval. However,-nothing[

in this provision-is to be construed as implying that systems or components s-are OPERABLE when they are found or known to-be inoperable although.still s meeting the Surveillance Requirements. N

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i CALVERT CLIFFS - UNIT J Amendment No. J2141

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CALVERT CLIFFS - UNIT 2 8 3/4 0-3 Amendment No. A5124

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INSERTt 4.0.2 This specification establishes the limit ~ for which -the specified ' time .

. Interval-- for, Surveillance Requirements may : be cxtended.' It permits (; an ^ . allowable t extension of the ' normal surveillance interval to facilitate - surveillance ; scheduling l and ,

consideration of plant operating conditions . that may not be ' suitable for- conducting the .

surveillance, e.g., transient conditions or Other ongoing ' surveillance , or '- maintenance  ;

activities, it also provides flexibility to accommodate the length' of a fuel cycle '

l for surveillances that . are performed at each refueling outage and are 'specified. with a 24-month surveillance , interval, it is not intended that this ' provision be - used 1 repeatedly as a convenience to extend surveillance ' intervals beyond that C specified for .I surveillances that, are not performed during refueling outages . [e.g., surveillances with-a f FREQUENCY ~ of R (18 months)). The limitation of Specification .4.0.2 Lis based 'on--

• engineering ; Judgment and the- recognition ' the > the most~ probable _ : result of any-particular surveillance ' being performed is the vesification of-' conformance with the Surveillance Requirements. This provision is sufficient to ensure: that " the reliability ensured through surveillance activities is not significantly degraded beyond that ,

obtained from the specified surveillance interval,  ;

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' '%,j UNITED STATES -

[ NUCLEAR REGULATORY COMMISSION.

.,.. 5 WASHINGTON, D. C 20088 '

k  ; August 21,11989-TO: ALL LICENSEES OF OPERATING PLANTS APPLICANTS FOR OPERATING LICENSES.-ANDHOLDERSOFCONSTRUCYIONPERMITS'

SUBJECT:

LINE-ITEM IMPROVEMENTS IN TECHNICAL SPECIFICATIONS - REMOVAL OF THE-3.25 LIMIT ON. EXTENDING SURVEILLANCE INTERVALS (GENERIC LETTER' Specification 4.0.2 of.the Standard Technical Specifications allows' surveil-lance intervals to be extended up to 25 pePeent offthe time interval specified.

In addition, this specification limits the ' combined time interval for any thres consecutive surveillance intervals to:less:than 3.25 times the specified sur-ve111ance interval. .

A lead-plant proposal was submitted by Commonwealth Edison for the LaSallei Technical Specifications:(TS) to modify the 3.25 limitation on extending sur-ve111ance intervals. Based on the review of the Commonwealth Edison proposal.

the NRC staff concludes that the removal of the'3.25 limit from Specification.

4.0.2 results in a greater benefit to safety than limiting the use of the,25-percent allowance to extend surveillance. intervals. The enclosed guidance is provided for the. preparation of a license amendment request toLimplemani:.this line-item improvement in TS. ,

Licensees and applicants are encouraged to propose changes to plant TS that are consistent with the guidance provided in:the enclosure.--Conforming amendment requests will be expeditiously reviewed by the NRC Project Manager for the facility. Proposed amendments that deviate from this guidance will require a longer, more detailed review. Please contact the' Project Manager if you have questions on this matter. .

Sincerely, MA J mes.G. Partlow Ausociate Director for Projects Off1ce'of Nuclear Reactor Regulation

Enclosures:

-1. Guidance for the Preparation of a License Amendment ,

Request.to Remove the.

3.25 Limit of Extending Surveillance Intervals

2. List of Most Recently Issued KRC Generic Letters 4908210106 .

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' 4, Enclosure'l- -

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& GUIDANCE FOR THE PREPARATION OF A LICENSE AMENDMENT REQUEST:TO-l REMOVE THE 3,25 LIMIT ON EXTENDING SURVEILLANCE INTERVALS .

a BACKGROUND Specification 4.0.2 of tni Standard Technical Specifications permits. surveil-lance intervals to be ' extended up to 25 percent of the specified interval. '

This extension facilitates the scheduling of surveillance activities and allows surveillances to be postponed when plant. conditions are not= suitable for con =

ducting a surveillance, for example, under transient-conditions or other ongo< v ing surveillance or maintenance activities.. Specification 4.0.2 also limits ,

extending surveillances so that the combined time interval for any three con-secutive surveillance intervals shall not exceed 3.25 times the specified sur- '

ve111ance interval. The intentV the 3.2511mit is to preclude routine use of:

the provision for extending a surveillance interval by 25_ percent. . }

Counnonwealth Edison Company '(Ceco) submitted a lead-plant proposal for the '!

.LaSalle Technical Specifications (TS) to remove the 3.25 limit-for-surveil- i lances that are performed during a refueling-outage and are specified with anL 18-month surveillance interval. After discussions with:the staff, Ceco amended the proposal to remove the 3.25 limitation for all surveillances. The' amended '

proposal'was approved by the staff on a lead-plant basis. Consistent with NRC policy, this Generic Letter provides guidance for license amendment requests to implement this line-item improvement in TS.

,- s DISCUSSION _

Experience has shown that the 18-month surveillance interval -with the provi-sion to extend it by 25 percent, is usually sufficient to accosmodate normal' .

variations in the length of a fuel cycle. - However, the NRC: staff has routinely granted requests for one-time exceptions to the 3.25 limit on extending refuel-ing surveillances because the risk to safety is low in contrast'to the alter. 3 native of a forced shutdown to perform these surveillances.- Therefore, the 3.25 limitation on extending surveillances has not been a practical _ limit on the use "

of,the 25-percent allowance for extending surveillances that are performed on a l

refueling outage basis.

The use of the allawance to extend surveillance intervals by 25 percent can also result in a significant safety benefit for surveillances that are perferm-  ;

ed on a routine batis during plant operation. This safety benefit is incurred l when a surveillance interval is extended at a time that conditions are not-suitable for performing the surveillance. Examples:of this include transient .

plant operating conditions or conditions in which safety systems are out of ser-vice because of ongoing surveillance or maintenance activities. In such cases, the safety benefit of allowing the use of the 25-percent allowance to extend:a surveillance interval would outweigh any benefit derived by limiting three con-l secutive surveillance intervals to the 3.25 limit. Also,,there is the adminis-trative burden associated with tracking the use of the 25-percent allowance -to ensure compliance with the 3.25 limit. On the basis of these considerations, the staff concluded that removal of the 3.25 limit will have an overall positive impact on safety.

An acceptable alternative to the existing requirements of Specification 4.0.2 is the following: .

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l 8908210105

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c 4.0.2 Each Surveillance Requirement shall-be performed within the l

- specified surveillance interval with a maximum allowable extension not to exceed 25 percent of the specified surveillance interval. .

Licensees should also propose changes to update the Bases'Section of1 Specifica- ,

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F tion 4.0.2. Generic Letter 87-09 provided updated Bases for Specification  :

4.0.2. The following changes to tw Bases of Specification 4.0.2, as provided. '

in Generic Letter 87-09,_ are shown underlined to reflect this change.  ;

Specification 4.0.2 establishes-the limit for which the specified tima ,

interval for Surveillance Req'uirements may be extended. M permits anL i

allowable extension of the normal-surveillance interval to facilitate-surveillance scheduling and consideration of plant operating conditions.

that may not be suitable for conducting, the~ surveillance;re.g., tratisientf  ;

L conditions or other ongoing surveillance or maintenance-activities.D Lt !

also provides flexibility to accommodate the 1enath of a fuel cyele foF ,

t spec--

surveillances tnat are popormee at eacn refueline outane and ari ified with a 12-tan 18-Du stn surveillance Interval. ;t It not ntenced . i that- this provision be used _ repeatedly as a conv0nience to extend surve11-lance Intervals beyond that specified for surves' lances that are not per- -c~

formed durino refueline outanes. The 11m1 tat < on of spec 171 cat 1on 4.0.Z g based c,a engineering judgement and< the recogniTon' that.the most probable result of any particular surveillance being performed is- the verification of conformance with the Surveillance ~ Requirements. 31),h surveillanc,e' provisionjf-sufficient to ensure that the reliability ensured throug activities is not significantly degraded beyond that obtained from'the

specified surveillance interval.

s SUINARY This alternative to the requirements of Specification 4.0.2 will remove an un-necessary restriction on extending. surveillance requirements and'will rescit in a benefit to safety when plant conditions are not conducive to the safe conduct. 4 of surveillance requirements.- The removal-of the 3.25 limit will-provide greater flexibility in the use of'the provision for extending surveillance"in-tervals, reduce the administrative burden associated with its~use, and have a positive effect on safety.

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