ML20134J297

Proposed Tech Specs Suppl to 960920 Application for Amend to Licenses DPR-39 & DPR-48,providing Annotated & Clean Copies of ITS Pp Affected by Proposed Amend

ML20134J297
Person / Time
Site:	Zion  File:ZionSolutions icon.png
Issue date:	02/03/1997
From:	COMMONWEALTH EDISON CO.
To:
Shared Package
ML20134J250	List: ML20134J246 ML20134J297
References
NUDOCS 9702120080
Download: ML20134J297 (4)

Text

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Programs and Manuals 5.5  ;

5.5 Programs and Manuals 5.5.7 Steam Generator (SG) Tube Surveillance Proaram (continued)

" Defect" means an imperfection of such severity that it '

exceeds the Plugging or Repair Limit, where applicable.

A tube containing a defect is defective. [

"F* distance" is the length of undegraded tube required to I l

resist pullout. This distance is measured from the bottom of the upper hard roll transition toward the bottom of the  ;

tube sheet 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 i inches. The F* Distance is applicable only to tubes that l are rerolled below the mid-plane of the tubesheet and have no degradation in the rerolled expansion joints. The F*

Distance is not applicable to the original factory hard  ;

roll.  ;

"F* tube" means a tube with indications below the F* distance greater than or equal to the Plugging or Repair Limit, and no indications within the F* distance.

" Imperfection" means an exception to the dimensions, finish l or contour of a tube from that required by fabrication

• drawings or specifications. Eddy current testing indications < 20% of the nominal tube wall thickness, if detectab?e, may be considered as imperfections.

" Plugging or Repair Limit" means the imperfection depth at or beyond which the tube shall be repaired or removed from service by plugging because it may become unserviceable prior to the next inspection.

" 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:

1. The Combustion Engineering welded sleeve process as described in Report CEN-331-P, Revision 1-P. See Notejl, The following sections of ABB/CE Report CEN-629-P, Revision 00, shall be implemented in conjunction with Report CEN-331-P, Revision 1-P:

9702120080 970203 5- l DR ADOCK 0500 (continued)

ZION Units 1 & 2 5.0-17 Amendment Nos. (Sup. 9)  ;

Programs and Manuals 5.5 )

5.5 Programs and Manuals 1 5.5.7 Steam Generator (SG) Tube Surveillance Procram  !

(continued)

Section 4.5.3 - Tube Brushing-Cleaning Equipment i Section 4.5.7 - Nondestructive Examination Section 5.0 - Sleeve Examination Program Section 9.3.1 - Cleaning Qualification ,

NotillIU Re'po rtJ C EN-331 - P M Ris t's i on71 - P , Tshal ls be -

implementedcin.conjunctioniwphtthe:processienhancements cited initheilotter from JiHAMueller, Commonwealth  :

Edison [totthe1NRC, dated jeptembert18,L1996 F '

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2. The Westinghouse Electric Corporation mechanical sleeve process as described in Report WCAP-Il669.

3. The Bechtel-KWU Alliance welded sleeve process as ,

described in Report BKAT-01-P, Revision 1.

" Sleeve Inspection" means an inspection of the sleeved portion of the tube. For a Combustion Engineering welded sleeve, this inspection will include the upper weld which ,

forms the new pressure boundary and the sleeve material below the upper weld. For a Westinghouse Electric Corp.

mechanical sleeve, this inspection will include the entire ,

length of sleeve material. For a Bechtel-KWU Alliance welded sleeve, this inspection will include the upper weld ,

which forms the new pressure boundary and the sleeve material below the upper weld.

" Tube Inspection" means an inspection of the steam generator tube from the point of entry (hot leg side) completely around the U-bend to the top support of the cold leg. If a ,

tube does not aermit the passage of the eddy current i inspection )ro>e the entire length and through the U-bend; this shall )e recorded and an adjacent tube shall be  :

inspected. ,

" Unserviceable" describes the condition of a tube if it leaks or contains a defect large enough to affect its structural integrity in the event of an Operating Basis Earthquake, a loss-of-coolant accident, or a steam line or feedwater line break as specified above.

5.5.8 Secondarv Water Chemistry Procram This program provides controls for monitoring secondary water chemistry to inhibit SG tube degradation. The program shall include:

l (continued) ,

ZION Units 1 & 2 5.0-18 Amendment Nos. (Sup. 9) 1 i

l

. l Programs and Manuals l 5.5 l 4 5.5 Programs and Manuals 5.5.7 Steam Generator (SG) Tube Surveillance Procram (continued)

" Defect" means an imperfection of such severity that it exceeds the Plugging or Repair Limit, where applicable.

i A tube containing a defect is defective.  ;

"F* distance" is the length of undegraded tube required to resist pullout. This distance is measured from the bottom  !

of the upper hard roll transition towar f the bottom of the  :

tube sheet 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 rerolled expansion joints. The F*

Distance is not applicable to the original factory hard roll.

"F* tube" means a tube with indications below the

! F* distance grcater than or equal to the Plugging or Repair Limit, and no indications within the F* distance.

l

" Imperfection" means an exception to the dimensions, finish i

! or contour of a tube from that required by fabrication drawings or specifications. Eddy current testing i indications < 20% of the nominal tube wall thichess, if

, detectable, may be considered as imperfections.

i

" Plugging or Repair Limit" means the imperfection depth at or beyond which the tube shall be repaired or removed from  :

service by plugging because it may become unserviceable j

. prior to the next inspection.  ;

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

1. The Combustion Engineering welded sleeve process as descrfoed in Report CEN-331-P, Revision 1-P. See Note 1.

The following sections of ABB/CE Report CEN-629-P, Revision 00, shall be implemented in conjunction with Report CEN-331-P, Revision 1-P:

)

(continued)

ZION Units 1 & 2 5.0-17 Amendment Nos. (Sup 9)

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Programs and Manuals 5.5 4

i i 5.5 Programs and Manuals i

5.5.7 Steam Generator (SG) Tube Surveillance Procram ,

l (continued) {

Section 4.5.3 - Tube Brushing-Cleaning Equipment l Section 4.5.7 - Nondestructive Examination ,

Section 5.0 - Sleeve Examination Program l

' Section 9.3.1 - Cleaning Qualification  !

1 Note 1: Report CEN-331-P, Revision 1-P, shall be implemented in conjunction with the process enhancements l

cited in the letter from J.H. Mueller, Commonwealth Edison, to the NRC, dated September 18, 1996. -

2. The Westinghouse Electric Corporation mechanical sleeve '

process as described in Report WCAP-ll669.

3. The Bechtel-KWU Alliance welded sleeve process as described in Report BKAT-01-P, Revision 1. i

" Sleeve Inspection" means an inspection of the sleeved i portion of the tube. For a Combustion Engineering welded sleeve, this inspection will include the upper weld which r I

< forms the new pressure boundary and the sleeve material below the upper weld. For a Westinghouse Electric Corp.

l mechanical sleeve, this inspection will include the entire length of sleeve material. For a Bechtel-KWU Alliance welded sleeve, this inspection will include the upper weld which forms the new pressure Feundary and the sleeve material below the upper weld. l

" Tube Inspection" means an inspection of the steam generator (

tube from the point of entry (hot leg side) completely around the U-bend to the top support of the cold leg. If a tube does not permit the passage of the eddy current inspection probe the entire length and through the U-bend; '

this shall be recorded and an adjacent tube shall be inspected.

" Unserviceable" describes the condition of a tube if it leaks or contains a defect large enough to affect its structural integrity in the event of an Operating Basis Earthquake, a loss-of-coolant accident, or a steam line or l

feedwater line break as specified above.

. 5.5.8 Secondarv Water Chemistry Program

, This program provides controls for monitoring secondary water chemistry to inhibit SG tube degradation. The program shall include:

(continued) l

, ZION Units I & 2 5.0-18 Amendment Nos. (Sup. 9) l

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