ML20128L783

Proposed Tech Specs Modifying F* Distance Definition

ML20128L783
Person / Time
Site:	Zion  File:ZionSolutions icon.png
Issue date:	10/04/1996
From:	COMMONWEALTH EDISON CO.
To:
Shared Package
ML20128L737	List: ML20128L733 ML20128L783
References
NUDOCS 9610150187
Download: ML20128L783 (10)

Text

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i ATTACHMENT B i

! ZION NUCLEAR GENERATING STATION

MARKED UP AND TYPED COPIES j OF THE CIS i FOR SUPPLEMENTAL PROPOSED CHANGES TO APPENDLX A TECHNICAL SPECIFICATIONS l FACILITY OPERATING LICENSES '

DPR-39 AND DPR-48

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i SUPPLEMENT TO LICENSE AMENDMENT REQUEST 96-02 i

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9610150187 961004 PDR ADOCK 05000295 p PDR 1 *

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LlHITING CONDITION FOR OPERATION SURVEILLANCE REQUIREMENT ,

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Repaired Tube means a tube that has undergone a process that re-establishes its serviceability. The sleeving process utilized shall be one of the following:

a. The Combustion Engineering welded i sleeve process as described in Report CEN-331-P Revision 1 P.

b. The Westinghouse Electric Corporation mechanical sleeve process as described in Report WCAP-11669.

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The Bechtel-KWU Alliance welded sleeve

)3rocess as described in Report BKAT , Revision 1.

11. P*=nistance is the length of undegraded tube i requir esist pullout. This distance is measured fra

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P Mf hardroll transition tubesheetandhasbeenco{i the ottom of the upper ivelybottom of determined to be 1.05 inches (no uding eddy current uncertainty).#

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F* Tube is a tube with indications below the '

F* Distance, equal to or greater than 40t.

and no indications within the F* Distance. ,

." '?;'.if f:.- 2'E'_t :..f t' 1 210'5.

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74 f3 Amendment Nos. 172 and 159

Bases:

3.3.1 Steam Generators .

4.3.1 ly F* Distance will be controlled by a co% ination of eddy current inspection and/or .

pro ss control. For a new additional roll expa. 'on. the requirement will be at least 1.05 ches of new hard roll. This is contro ed by the length of the rollers used during t mechanical installation of the new -

hard rol 'oint. The distance from the original r 1 transition zone is also controlled the process in that the lower end of the n roll expansion is located approximately ne inch above the original roll expansion. In the case of the new roll.

eddy current ex ination will confirm that there are no indi tions in the new roll ha fg region and that tt e is a new roll region " 73 with well defined er and lower expansion transitions.

When eddy current exam ation. alone, must i ch as in an existing  !

determineF*

hard roll region,Distance..%r or whe ultiple lengths of additional hard rolls hav been added, the eddy current uncertainty 1 incorporated.

The eddy current uncertaint is determined by '

testing against known standar . For example, if qualification test. g of the eddy current technology being used a inst a known ,

standard has determined that the ddy current uncertainty is 0.25 inches, then e F* t Distance required would be equal tc .05 inches plus 0.25 inches, or 1.30 in s. If any indications are found within the

. Distance, as defined by the Specificat n.

)lus eddy current uncertainsi, the tube ill

)e repaired or removed from service.

78c Amendment Hos. 172 and 159

Insert A "F* Distance is the length of undegraded tube required to resist pullout. The distance is measured from the bottom of the upper hard roll transition toward the bottom of the tubesheet and has been conservatively determined to be 1.05 inches. The determination of the F*

Distance is satisfied by the mechanical tool (rolling pin) used to install the joint having an effective length of greater than or equal to 1.05 inches. The F* Distance is applicable only to tubes that are rerolled below the mid-plane of the tubesheet and have no degradation in the rerolled expansion joints."

Insert B The F* Distance will be controlled by process control. For a new additional roll expansion, .

the requirement will be at least 1.05 inches of new hard roll. This is controlled by the length of the rolling pin used during the mechanical installation of the new hard roll joint. The distance from the original roll transition zone is also controlled by the process in that the lower end of the new roll expansion is located approximately one inch above the original factory hard roll expansion. In the case of the new roll, eddy current examination will confirm that there are no indications in the new roll region and that there is a new roll region with well defm' ed upper and lower expansion transitions. The F* Distance is not applicable to the original factory hard roll.

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LIMITING CONDITION FOR OPERATION SURVEILLANCE REQUIREMENT

10. Repaired Tube means a tube that has undergone a process that re-establishes its serviceability. The sleeving process utilized shall be one of the following:

a. The Combustion Engineering welded sleeve process as described in Report CEN-331-P, Revision 1-P.

b. The Westinghouse Electric Corporation mechanical sleeve process as described in Report WCAP-11669.

c. The Bechtel-KWU Alliance welded sleeve process as described in Report BKAT P, Revision 1.

11. F* Distance is the length of undegraded tube required to resist pullout. The distance is measured from the bottom of the upper hardroll transition toward the bottom of the tubesheet and has been conservatively determined to be 1.05 inches. The determination of F* distance is satisfied by the mechanical tool (rolling pin) used to install the joint having an effective length of greater than or equal to 1.05 inches. The F* Distance is applicable only to tubes that are rerolled below the mid-plane of the tubesheet and have no degradation in the expansion joints.

12. F* Tube is a tube with indications below the F* Distance, equal to or greater than 40%,

and no indications within the F* Distance.

74f3 Amendment Nos.

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Decoo '

3.3.1 Steam Generators 4.3.1 The F* Distance will be controlled by process control. For a new additional roll expansion, the requirement will be at least l.05 inches of new hard roll. This-is controlled by the length of the rollers used during the mechanical installation of-the new hard roll joint. The distance from the original roll transition zone is also 5 controlled by the process in that the lower  !

end of the new roll expansion is located approximately one inch above the original roll expansion. In the case of the new roll, '

eddy current examination will confirm that there are no indications in the new roll i region and that there is a new roll region I with well defined upper and lower expansion transitions. The F* Distance is not  !

applicable to the original factory hard roll.

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i 78c Amendment Nos.

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l ATTACHMENT C ZION NUCLEAR GENERATING STATION EVALUATION OF SIGNIFICANT HAZARD CONSIDERATIONS FOR PROPOSED CHANGES TO APPENDIX A TECHNICAL SPECIFICA'llONS FACILITY OPERATING LICENSES DPR-39 AND DPR-48 SUPPLEMENT TO LICENSE AMENDMENT REQUEST 96-02 6

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Commonwealth Edison has evaluated the previously proposed amendment and determined that it involves no significant hazards considerations. This was documented in the original i License Amendment Request (Ref.1). This supplement to the LAR is for additional clarification of the applicability of the F* Distance Definition and does not change or alter the

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intent of the definition or the applicability. This change is therefore bounded by the scope of

.the original evaluation. The conclusions of the original Significant Hazards Consideration remain valid.  !

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4 ATTACHMENT D ,

j ZION NUCLEAR GENERATING STATION ENVIRONMENTAL ASSESSMENT '

4 STATEMENT FOR PROPOSED CHANGES TO APPENDIX A TECHNICAL SPECIFICATIONS FACILTTY OPERATING LICENSES l

) DPR-39 AND DPR-48 l 4

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SUPPLEMENT TO LICENSE AMENDMENT REQUEST 96-02

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The proposed changes to the previous license amendment request were evaluated against the criteria for and identiGcation of licensing and regulatory actions requiring environmental i assessment in accordance with 10 CFR 51.21. It was determined that the proposed changes l meet the criteria for categorical exclusion as provided for under 10 CFR Sl.22(c)(9). This !

was documented in the original License Amendment Request (Ref.1). This supplement to the LAR clariGes the applicability of the F* Distance Definition, and does not change the

' definition or the applicability. As such, this proposed change does not change any of the original evaluations and determinations. Therefore the conclusions of the original environmental assessment remain valid.

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