ML102290141
| ML102290141 | |
| Person / Time | |
|---|---|
| Site: | Kewaunee  |
| Issue date: | 08/09/2010 |
| From: | Hartz L Dominion, Dominion Energy Kewaunee |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| 10-447 | |
| Download: ML102290141 (24) | |
Text
Dominion Energy Kewaunee, Inc.
5000 Dominion Boulevard, Glen Allen, VA 23060 ~Domi nioNi August 9, 2010 United States Nuclear Regulatory Commission Serial No.: 10-447 Attention: Document Control Desk LR/DEA RO Washington, DC 20555-0001 Docket No.: 50-305 License No.: DPR-43 DOMINION ENERGY KEWAUNEE, INC.
KEWAUNEE POWER STATION LICENSE RENEWAL APPLICATION SECOND ANNUAL UPDATE REQUIRED BY 10 CFR 54.21(b)
By letter dated August 12, 2008 (Reference 1), Dominion Energy Kewaunee (DEK) submitted an application for renewal of the operating license for Kewaunee Power Station Kewaunee Power Station (KPS). DEK is required by 10 CFR 54.21(b) to report any changes to the current licensing basis (CLB) of the facility under review that materially affect the contents of the license renewal application (LRA), including the Updated Safety Analysis Report (USAR) Supplement. These changes are required to be submitted each year and at least 3 months prior to the scheduled completion of the LRA review by the NRC.
DEK has completed the second annual review of CLB changes and concluded that there is one change that materially affects the content of the KPS LRA. This change involves modifications that were made to the substation/switchyard as part of.a plan to improve the reliability and maintenance of the offsite power supply and to increase grid reliability. Attachment 1 describes the details of the substation/switchyard modifications. Attachment 2 provides annotated pages from the KPS LRA showing the changes to the content of the KPS LRA resulting from the modifications. Inserted text is indicated with a double underline and deleted text is indicated with a strikethrough.
Additionally, all changes have a revision bar in the right margin.
Serial No.10-447 Docket No. 50-305 Page 2 of 3 Should you have any questions regarding this submittal, please contact Mr. Paul C.
Aitken at (804) 273-2818.
Very truly yours, Leslie N. Hartz Vice President - Nuclear Support Services COMMONWEALTH OF VIRGINIA )
)
COUNTY OF HENRICO The foregoing document was acknowledged before me, in and for the County and State aforesaid, today by Leslie N. Hartz, who is Vice President - Nuclear Support Services of Dominion Energy Kewaunee, Inc.
She has affirmed before me that she is duly authorized to execute and file the foregoing document in behalf of that Company, and that the statements in the document are true to the best of her knowledge and belief.
Acknowledged before me this k/10dayof 2,/67- ,2010.
My Commission Expires: ,
Notary Pbiuic
Attachment:
- 1. Substation/Switchyard Modifications B; m - - -7 I
4 GINGER LYNN MELTON
My Commission Expires Apr 30. 2013
-- w ,,P . .v v . . I
References:
v v v qll
- 1. Letter from D. A. Christian (DEK) to NRC, "Kewaunee Power Station Application for Renewed Operating License," dated August 12, 2008. [ADAMS Accession No.
ML082341020]
Commitments made in this letter:
- 1. License Renewal Commitment 16 will be revised to incorporate the pulling pit within the scope of the Non-EQ Inaccessible Medium Voltage Cables program, which will inspect for water collection and will remove water, if required.
Serial No.10-447 Docket No. 50-305 Page 3 of 3 cc: U.S. Nuclear Regulatory Commission Regional Administrator, Region III 2443 Warrenville Road Suite 210 Lisle, IL 60532-4532 Mr. K. D. Feintuch, Senior Project Manager U.S. Nuclear Regulatory Commission One White Flint, Mail Stop 08-H4A 11555 Rockville Pike Rockville, MD 20852-2738 Mr. Daniel Doyle Environmental Project Manager U.S. Nuclear Regulatory Commission Mail Stop 0-11 F1 Washington, DC 20555-0001 Mr. John Daily License Renewal Project Manager U.S. Nuclear Regulatory Commission Mail Stop 0-11 F1 Washington, DC 20555-0001
,NRC Senior Resident Inspector Kewaunee Power Station N490 Highway 42 Kewaunee, WI 54216 Public Service Commission of Wisconsin Electric Division P.O. Box 7854 Madison, WI 53707 David Hardtke Chairman - Town of Carlton E2334 Lakeshore Road Kewaunee, WI 54216
Serial No.10-447 Docket No. 50-305 ATTACHMENT I SUBSTATIONISWITCHYARD MODIFICATIONS KEWAUNEE POWER STATION DOMINION ENERGY KEWAUNEE, INC.
Serial No.10-447 Docket No. 50-305 Attachment 1/Page 1 of 1 Introduction In the fall of 2009, modifications were made to the Kewaunee substation/switchyard as part of a plan to improve the reliability and maintenance of the offsite power supply and to increase grid reliability.
Modification Description The substation/switchyard upgrade reconfigured the 138 kV switchyard bus, installed new 138 kV breakers, installed a new 138 kV/13.8 kV Tertiary Auxiliary Transformer (TAT) Supply Transformer (TST), a new 13.8 kV SF6 Gas Circuit Breaker (TST 199) and associated disconnect switches, and associated control cables and connections. A new 13.8 kV feed from the TST transformer secondary disconnects was spliced to the existing 13.8 kV underground feeder cable to the in-scope TAT at an underground pulling pit, which was expanded above ground and a cover was installed to protect the cable splice. The TAT was replaced with a higher capacity transformer to provide for future additional capacity for the TAT circuit to the 4160V buses. The new switchyard 138 kV connections to this circuit allow multiple possible 138 KV switchyard feeds for this circuit for increased reliability.
A new South Control House was added to provide space for equipment controls, indication, relocation of some DEK assets from the North Control House, and future expansion. The South Control House has two 125 VDC batteries for primary and backup capability which provide increased reliability.
A new 345 kV breaker (G1) and disconnect switches were installed between the main transformer feeder and the switchyard. These components were relocated outside the main switchyard (previously located inside the switchyard) to provide for future 345 kV switchyard expansion. The new components are not within the scope of license renewal. However, the Kewaunee license renewal application (LRA) Figure 2.1-2 is affected since it currently indicates that the new breaker and disconnect switches are located within the switchyard. /I Additionally, a new Spare Parts Building was added in the Substation. However, this structure is not within the scope of license renewal. The existing out-of-scope Substation Control House has been renamed the North Control House.
Serial No.10-447 Docket No. 50-305 K
ATTACHMENT 2 ANNOTATED PAGES FROM KPS LRA
/
List of Affected Pages Page 1-14 Page 2-17 Page 2-18 Page 2-46 Page 2-217 Page 2-219 Page 2-220 Page 2-221 Page 2-248 Page 2-260 Page 2-261 Page 3-838 Page 3-839 Page 3-841 Page 3-842 Page A-21 Page A-48 Page B-91 KEWAUNEE POWER STATION DOMINION ENERGY KEWAUNEE, INC.
Kewaunee Power Station Application for Renewed Operating License Technical and Administrative Information Abbreviation Definition SBO Station Blackout SCBA Self Contained Breathing Apparatus SCC Stress Corrosion Cracking SE Steam Exclusion SER Safety Evaluation Report SFP Spent Fuel Pool SG Steam Generator SI Safety Injection SR Safety-Related SSC System, Structure, and Component SV Special Ventilation TAT Tertiary Auxiliary Transformer TLAA Time-Limited Aging Analysis TSC Technical Support Center TST TAT Supply Transformer UEAF EAF-corrected Fatigue Usage ULSD Ultra Low Sulfur Diesel USAR Updated Safety Analysis Report Page 1-14
Kewaunee Power Station Application for Renewed Operating License Technical and Administrative Information The Kewaunee required functions to cope with an SBO event are described in USAR Section 8.2,4. Recovery includes the ability to achieve and maintain hot shutdown.
The SSCs required for compliance with 10 CFR 50.63 were identified in a regulated event report which was used as input to the scoping and screening processes. The in-scope SSCs include the TSC diesel generator, its support systems, the TSC Diesel Generator Room, and other equipment relied upon to mitigate an SBO event.
The CLB for Kewaunee considers the recovery of a safety-related EDG as the method of recovery from an SBO. Based solely on the CLB, the offsite power system would not be included within the scope of license renewal. The NRC position on SBO recovery as it relates to the requirements of 10 CFR 54 (Reference 2.1-6) requires the inclusion of structures and components that support the recovery of offsite power after an SBO event within the scope of license renewal. Using this guidance, the
_jsupply path required to energize the safety-related 4160 V buses from offsite power after an SBO was included within the scope of license renewal. For Kewaunee, this required the inclusion of the off-site power feeds for both the Reserve Auxiliary Transformer (RAT) that normally supplie~s Emergency 4,160-Volt Bus 1-6 and the Tertiary Auxiliary Transformer (TAT) that normally supplies Emergency 4,160-Volt Bus 1-5. The scope includes the first point of isolation upstream of the supply for the primary side of the specific transformer and also from the secondary side of the transformer to the safety-related buses. The Kewaunee switchyard provides two possible paths for the 138kV source supplying the overhead conductors to the RAT.
Since any of the two incoming transmission lines could be restored first, both circuit breakers and their associated set of disconnect switches were included within the scope of license renewal. The TAT is supplied via an underground cable connected to a circuit breaker and associated set of disconnect switches supplied at 13.8 kV from the teF -secondary winding of transformer T-4-TST. The support structures associated with these in-scope components were also included within the scope of license renewal. Figure 2.1-2 provides a schematic of the electrical components that support the recovery of offsite power after an SBO event.
The proposed ISG, LR-ISG-2008-01, "Staff Guidance Regarding the Station BLackout Rule (10 CFR 50.63) Associated with License Renewal Applications," has been reviewed and the Kewaunee scoping boundary is consistent with the guidance of this document.
Page 2-17
NOTE: This Figure has been replaced in it's entirety.
Figure 2.1-2 Offsite Power for SBO 345KV
- ,=--1"
- 1TST199
/ 13.BKV RA199 WEST RA199 EAST 14.. .iTL*-
138KV 0/0-"CB-&0-----------[OC13BKV
- - - - - - - - - - - - - - - - - - - - - - - - -- . - - - - - - ---- . . .
- - - - - - - - - - - - - - - - - - - -. -. -. .. .. . . . ....
- ~PLANT .
1K RESERVE AUXILIARY UNDERGND TRANSFORMER CABLE IN- zj) (RAT) 4.16KV BUS 1-1 DUCTLINE
- 4. 16KV 'N.O* .E
- 7
- ~
16K4 ~ ~)hI4 ND.. 1- N.C.
_rI4. I&x 13.8Kv 4. 16KV BUS 1-3 4. 16KV BUS 1-4 MAIN
- 4. 16KV '1-307: N.O. 1-301 N.C. ':I-407: N.O. N.C. N.-C.
N.C.
TERTIARY AUXILIARY TRANSFORMER (TAT) .... --
'1-503' N.D. '1-501' N.C. 1-505 N.C. 1-510 N.D. 1-509 N.D. '1-601' N.C. 1-602 N.0.',1- 6 "- N
- .- - I-------------------/ 4-----------
EMERGENCY EMERGENCY 0-lA DIESEL DIESEL GENERATOR GENERATOR 4160V STATION 4 _0 L ---------------------. J----------- -------------------------------
SERVICE 480V 1-52 416OV STATION 4BOV 1-46 TRANSFORMER 4,
4, SERVCE TRANSFORMER n BKR 1-46
_ 480V NOTES: . ... B KR BKR OV 1-52 N. . C.
.N. "*' 14604 1.THE ELECTRICAL EQUIPMENT IN SCOPE OF LICENSE RENEWAL FOR RESTORATION OF OFFSITE POWER IS SHOWN BY DOTTED LINES.
2.THE NORMALLY OPEN (N.D.) OR NORMALLY CLOSED (N.C.) POSITION OF 4160-VOLT AND 480-VOLT BREAKERS ARE INDICATED FOR NORMAL PLANT OPERATION.
Kewaunee Power Station Page 2-18 Application for Renewed Operating License Technical and Administrative Information
Kewaunee Power Station Application for Renewed Operating License Technical and Administrative Information Table 2.2-4 Structures Not Within the Scope of License Renewal Structure USAR Reference Operating Training Facility Figure 1.1-2 Pump House 1 & 2 Figure 1.1-2 Security Building Section 1.2.1/Table B.2-1 Sewage Treatment Plant and Figure 1.1-2 Laboratory SGR Buildings None Shore line stabilization Section 2.6.2 Site Service Building #1 None Spare Parts Building None I Substation North Control House Figure 1.1-2 Training Facility None Trench (electrical) None Vehicle Garage Figure 1.1-2 Warehouse No. 1 Figure 1.1-2 Welding Shop None Page 2-46
Kewaunee Power Station Application for Renewed Operating License Technical and Administrative Information The evaluation boundary for the Turbine Building structural members subject to aging management review includes structural members for the Class I and Class II1*
areas, and the Class 1*support structure.
USAR Reference Additional details of the Turbine Building can be found in the USAR, Sections 1.2.1, 1.3.1, !OA.3, 10A.4, 8.2, B.9.3, B.9.4, Figure 1.2-1, Figure 1.2-3, Figure 1.2-5, and Table B.2-1.
License Renewal Drawings The license renewal drawing for the Turbine Building is listed below:
LR-A-202-1 Components Subiect to AMR The Turbine Building structural members that require aging management review are indicated in Table 2.4.2-6, Turbine Building.
The aging management review results for these structural members are provided in Table 3.5.2-7: Structures and Component Supports - Turbine Building - Aging Management Evaluation.
2.4.2.7 YARD STRUCTURES Description The following yard structures, which are located throughout the yard and substation/switchyard area, are within the scope of license renewal:
" Duct Banks
" Emergency Diesel Generator Fuel Oil Storage Tanks Foundation
" Fire Hose Houses
" Lighting Poles (P2, P4, P5)
" Manholes/Pulling Pit
° Outdoor Transformer Bays
" Substation/Switchyard Structures
" Transmission Towers Page 2-217
Kewaunee Power Station Application for Renewed Operating License Technical and Administrative Information The evaluation boundary for the fire hose houses structural members subject to aging management review includes the steel structure and the supporting concrete slab.
Lighting Poles Three lighting poles (Poles 2, 4, and 5), which provide security lighting in the yard area, are within the scope of license renewal. These lighting poles are constructed of steel and supported by a reinforced concrete caisson foundation.
The lighting poles (Poles 2, 4, and 5) are in the scope of license renewal since the structures have intended functions that meet the criteria stated in 10CFR54.4(a). .The structures meet 10CFR54.4(a)(2) because failure of these poles could affect safety-related systems, structures and components.
The evaluation boundary for the lighting poles structural members subject to aging management review includes the stee! pole structure and the supporting concrete caisson foundation.
Manholes/Pulling Pit There are four manholes and one pulling pit in the scope of license renewal. One manhole is in the scope of license renewal because it supports electrical cable required for the restoration of offsite power for station blackout. This manhole is an enclosed underground reinforced concrete structure that is soil supported and is located near the Tertiary Auxiliary Transformer. The remaining three manholes provide access to underground fuel oil storage tanks. Two access manholes are provided for the emergency diesel generator fuel oil storage tanks and one for the Technical Support Center diesel generator fuel oil storage tank. These manholes are reinforced concrete structures that rest directly on the tanks. The pulling pit is a reinforced concrete structure that houses spliced electrical cables and is soil supported. The pulling pit is in the scope of license renewal because it supports electrical cables required for the restoration of offsite power for station blackout.
The manholes and the pulling pit are in the scope of license renewal since the structures have intended functions that meet the criteria stated in 10CFR54.4(a). The structures meet 10CFR54.4(a)(3) because the structures support fire protection and station blackout.
Page 2-219
Kewaunee Power Station Application for Renewed Operating License Technical and Administrative Information The evaluation boundary for the manholes andpulling pit structural members subject to aging management review includes the reinforced concrete structures and the access covers.
Outdoor Transformer Bays There are seven outdoor transformer bays located adjacent to the south and east sides of the Turbine Building. Each transformer bay, formed with firewalls, has an automatic water spray system to extinguish and prevent the spread of fires. The side walls of all the bays are constructed of reinforced concrete and are supported by a spread footing foundation. The back wall of all the bays is the exterior wall of the Turbine Building. Each bay has a reinforced concrete floor slab founded on soil. The transformers located within the bays are supported on a concrete mat foundation that is isolated by a construction joint from the concrete bay floor. The Reserve Auxiliary Transformer and the Tertiary Auxiliary Transformer have two reinforced rectangular column sections located at the base of the mat foundation, which are utilized in transferring the loads to a lower underground reinforced concrete mat foundation.
The outdoor transformer bays are in the scope of license renewal since the structures have intended functions that meet the criteria stated in 10CFR54.4(a). The structures meet 10CFR54.4(a)(3) because the structures support station blackout and fire protection.
The evaluation boundary for the outdoor transformer bays structural members subject to aging management review includes all of the bays since they support an automatic water spray system required for fire protection.
However, only the foundations that support the RAT and TAT are in scope for license renewal because these two transformers are required for the restoration of offsite power for station blackout. The back wall of all the bays is within the scope of license renewal but is evaluated for aging management with the Turbine Building structure.
Substation/Switchyard Structures The substation/switchyard structural members associated with the in-scope electrical equipment required for the restoration of offsite power for station blackout includes the steel structures and associated foundations for the 138 kV take-off tower, 4.8 kV take Off structurc, and the 138 kV and 13.8 kV disconnect switches. The 44.8kv take eff concrctc structurc and the concrete foundations for the 138 kV and !3.8 kV oil circuit breakers and 13.8 kV gas circuit breaker are also included.
Page 2-220
Kewaunee Power Station Application for Renewed Operating License Technical and Administrative Information The South Control House structure isa steel frame single story metal structure supported on reinforced concrete spread footings. The building houses the electrical controls essential to the operation of switchyard equipment.
The substation/switchyard structures are in the scope of license renewal since the structures have intended functions that meet the criteria stated in 10CFR54.4(a). The structures meet 10CFR54.4(a)(3) because the structures support station blackout.
The evaluation boundary for the substation/switchyard structures structural members subject to aging management review includes the identified steel support structures and the supporting concrete foundations. The evaluation boundary also includes the foundation for the oil circuit breakers and th c6.. nr..t. take off StrW,,
, ,. prcvided to r'ute thc 13.8 k' cablcs undergr-und to a duct bank gas circuit breaker.
Transmission Towers Three steel transmission towers (Towers 1, 3, and 4), which support the transmission line required for the restoration of offsite power for SBO, are installed from outside the substation/switchyard to the RAT. These towers are single pole steel structures that support the 138 kV RAT circuit on one side and the main transformer 345 kV circuit on the other side. The steel poles are supported by a reinforced concrete caisson foundation.
The transmission towers are in the scope of license renewal since the structures have intended functions that meet the criteria stated in 10CFR54.4(a). The structures meet 10CFR54.4(a)(3) because the structures support station blackout.
The evaluation boundary for the transmission towers structural members subject to aging management review includes the steel pole structure and the supporting concrete caisson foundation.
USAR Reference Additional details for the Yard Structures can be found in the USAR Table B.2-1.
License Renewal Drawings The license renewal drawing for the Yard Structures is listed below:
LR-A-202-1 Page 2-221
Kewaunee Power Station Application for Renewed Operating License Technical and Administrative Information Table 2.4.2-7 Yard Structures Structural Member Intended Function(s)
Duct Banks Enclosure Protection, Structural Support Fire Hose Houses Enclosure Protection, Structural Support Foundations (EDG fuel oil storage Structural Support tanks, lighting poles, fire hose houses, outdoor transformer walls, RAT &TAT transformers, substation/switchyard structures, transmission toweirs)
.Lighting Poles Structural Support Manhole/Pulling Pit Access Covers Enclosure Protection, Structural Support I I
Manholes/Pulling Pit Enclosure Protection, Structural Support Outdoor RAT Bay Miscellaneous Steel Structural Support
[embedded steel exposed surfaces (shapes, plates)]
Outdoor Transformer Bays Structural Fire Barrier, Structural Support Reinforced Concrete (beams, columns, walls, floor, curbs)
Steel Bar Straps (EDG fuel oil storage Structural Support tanks)
Structural Support Substation!Switchyard SOSructe Structure (13.8kW take off GtrUcture) I Substation/Switchyard Steel Structures Structural Support
{[138 kV take-off tower, supports for 138 kV & 13.8 kV disconnect switches,-4-.8 kV take Off StFrueu..) (includes the attached underground take-offs), South Control House See Table 2.0-1 for definition of intended function.
Page 2-248
Kewaunee Power Station Application for Renewed Operating License Technical and Administrative Information assembly. The associated fuse holders (metallic clamps) meet IOCFR54.4(a)(1) by providing power and protection to safety-related radiation monitor circuits.
The evaluation boundary for fuse holders that are subject to aging management review includes the metallic clamps holding the fuse and the cable conductor attachments at the ends of the fuse holder.
The non-metallic fuse base, which serves as an electrical insulating material, is evaluated with Cables and Connections in Section 2.5.1.
USAR Reference None Components Subiect to AMR The component types that require aging management review are indicated in Table 2,5,2-1, Fuse Holders.
The results of the aging management review of these components are provided in Table 3.6.2-2: Electrical Components - Fuse Holders - Aging Management Evaluation.
2.5.3 METAL ENCLOSED BUS Description Metal enclosed buses are electrical buses installed on electrically insulated supports and are constructed with each phase conductor enclosed in a separate metal enclosure or all conductors enclosed in a common metal enclosure. The MEBs are used in power systems to connect various elements in electric power circuits such as switchgear, transformers, main generator, and diesel generators. The four types of buses classified as MEBs are isolated phase, segregated phase, non-segregated phase, and switchyard bus (bare non-enclosed bus). The 13.8kV and-138 kV switchyard bus and 4.16_kV non-segregated phase bus that provide paths for the recovery of off-site power during an SBO event are the only MEBs within the scope of license renewal. The I3.8Kv swi'thyard bus consists of a.glc bus that is supported en porc.lain post type insulatrs and pro.Vid.s connctiRn betwecn the dis..nnc.t switch asso.at.d with Oil Circuit B*"*Tkc TA 199 (10) to the undsisgtuod eable that supplies poweir to the TAT. The TAT providos pows r via eables te 4.16kV Emefrgeney Bus 1 6 during normal operation. The 138kV switchyard bus consists of Page 2-260
Kewaunee Power Station Application for Renewed Operating License Technical and Administrative Information tubular bus supported on porcelain post type insulators used to connect 138_kV Oil Circuit Breakers RA-199E (3E) and RA-199W (3W) to their associated disconnect switches and the overhead transmission line that provides power to the RAT. The RAT powers two secondary 4.16=kV windings (RX and RY) that are connected to non-segregated MEBs. Only the MEB of the RX winding is in the scope of license renewal since it is the off-site power source for 4.16=kV Emergency Bus 1-6. See Figure 2.1-2 for a schematic of the electrical components that support the recovery of offsite power after an SBO event.
The MEB is in the scope of license renewal since the commodity has intended functions that meet the criteria stated in 10CFR54.4(a). The above MEBs meet 10CFR 54.4(a)(3) because they support the restoration of off-site power following a SBO event.
The evaluation boundaries for the components subject to aging management review are from the non-segregated MEB or switchyard bus to where connection has been made to equipment or to cables. This includes the 138 kV switchyard bus connections of the overhead transmission conductors supplying the RAT and the 13,814 .Wit.hyaFd bus ecnn.tion.t. the underground c3,blc cupplying thT which are evaluated for aging management with Cables and Connections.
The 4.16_kV MEB enclosures (including expansion joints, sealants, and exterior enclosure supports) and the switchyard post insulator supports are considered.
structural components and are discussed in Section 2.4.2, Miscellaneous Structural Commodities (Electrical enclosure commodities) and Section 2.4.2.7, Yard Structures (Substation/Switchyard Structures and Transmission Towers).
USAR Reference None' Components Subiect to AMR The component types that require aging management review are indicated in Table 2.5.3-1, Metal Enclosed Bus.
The results of the aging management review of these components are provided in Table 3.6.2-3: Electrical Components - Metal Enclosed Bus - Aging Management Evaluation.
Page 2-261
Table 3.5.2-8:
\
Structures and Component Supports - Yard Structures - Aging Management Evaluation NUREG-1801 Structural Member Intended Material Environment Aging Effect/Mechanism Aging Management Volume 2 Table Notes Function(s) Requiring Management Programs Reference Item Foundations (EDG fuel oil SS Concrete (E) Air-outdoor Loss of material (spalling, Structures Monitoring III.A3-06 3.5. -26 A storage tanks, lighting scaling) and Program poles, fire hose houses, cracking/freeze-thaw outdoor transformer /
walls, RAT &TAT (E) Soil Cracking, loss of bond, and loss Structures Moritoring II1.A3-04 3.5.1-31 A transformers, of material (spalling, . Program substation/switchyard scaling)/corrosion of embedded structures, transmission steel towers) Cracks and distortion/due to Structures I,,onitoring III.A3-03 3.5.1 23 A increased stress levels from Program settlement Increase in porosity and Structures Mor-itoring III.A3-05 3.5. .3 A permeability, cracking, loss of Program material (spalling, scaling)/aggressive chemical attack Lighting Poles -* SS Steel (E) Air-outdoor Loss of material/corrosion Struýctures Monitoring III.A3-12 3.5.1 -25 A Program Manhole/l P EN; SS Aluminum (E) Air-outdoor Loss of material/pitting and Structures Monitoring TP-006 3.5.1 -5 C I Access Covers crevice corrosion Program.
Steel (E) Air-outdoor Loss of material/corrosion Structures Monitoring III.A3-12 3.5.1-25 A Program See Table 2.0-1 for definitions of intended function and Table 3.0-1 for definitions of-service environments.
Kewaunee Power Station Page 3-838 Application for Renewed Operating License
Table 3.5.2-8: Structures and Component Supports - Yard Structures - Aging Management Evaluation Intended NUREG-1 801 Aging Effect/Mechanism Aging Management Table 1 Structural Member Material Environment Volume 2 te Notes Function(s) Requiring Management Programs Reference Manholesul P EN; SS Concrete (E) Air-outdoor Cracking, loss of bond, and loss Structures Monitoring III.A3-09 3.5.1-23 A I of material (spalling, Program scaling)/corrosion of embedded steel Cracking/due to expansion and Structures Monitoring II.A3-02 35,1 -27 A reaction with aggregates Program Increase in porosity and Structures Monitoring H permeability, loss of Program strength/leaching of calcium hydroxide Loss of material (spalling, Structures Monitoring III.A3-06 3,5.1-26 A scaling) and Program cracking/freeze-thaw
+/- 1 4 -~ -l (E) Soil Cracking, loss of bond, and loss Structures Monitoring II1.A3-04 3.5.1-31 A of material (spalling, Program scaling)/corrosion of embedded steel Cracks and distortion/due to Structures Monitoring III.A3-03 3.5.1-28 A increased stress levels from Program settlement Increase in porosity and Structures Monitoring III.A3-05 3.5,1-31 A permeability, cracking, loss of Program material (spalling, scaling)/aggressive chemical attack See Table 2.0-1 for definitions of intended function and Table 3.0-1 for definitions of service environments.
Kewaunee Power Station Page 3-839 Application for Renewed Operating License
Table 3.5.2-8: Structures and Component Supports - Yard Structures - Aging Management Evaluation NUREG-1 801 Intended Agn fetMcaim AigMngmn UE-81 Table 1 Structural Member Material Environment Aging EffectlMechanism Aging Management Volume 2 Notes Function(s) Requiring Management Programs Reference Item Steel Bar Straps (EDG SS Steel (E) Soil Loss of material/general, pitting, Buried Piping and Tanks A-01 3.3. 1-1! C fuel oil storage tanks) crevice, and microbiologically Inspection influenced corrosion Substation!Switchyard &S GORrete ^E.Ai.
eu^dr Croking, less of bond, and loes Struotur, M. nitcring l4.A359
- &4 2* A Conorete Structure (13.8 of mnatoial (spallir'.g kV take off stý-RWotro Galin~gyooGrroiGn of embedded steel Crookinglduo to eopanoien and Strotuco ontGring HI Aý- PP 5.-27 A Fraotien with agg~rgatcs r-F8FgF-lnorease in PGrooity and Struoturoo1 MOnR)itrng 1 permeability, !as ofg~F Sterng!Weaeohing of eaboium Less of mnatodal (spalling, Struoftu~oo MOROitRig I.kA3 06 3.6.4-26 A sealing) and thaw (E)-Soil Cracking, less-of bodand o StrUoturo Monitoring- 1I.-A3-04 3.5.1 31 A ef mnaterial (Gpalling, rge ooolin g)"'rreFF86i ef embedded Craoko6 and diotoffienidue to Struoturo Moi0ig 4A-3 &A2 A inoroased stress levels from ,f See Table 2,0-1 for definitions of intended function and Table 3,0-1 for definitions of service environments.
Kewaunee Power Station Page 3-841 Application for Renewed Operating License I
Table 3.5.2-8: Structures and Component Supports - Yard Structures - Aging Management Evaluation NUREG-1801 Intended AigEfc/ehns AgnMagmntTable 1 Structural Member Intended Material Environment Aging EffectqMechanism Aging Management Volume 2 Notes Function(s) Requiring Management Programs Reference Item SbttoSwthx 86Genefeie (E)-SeiI lnGroooo in pefrcoity an~d Struoturoc MGME)itoig l1.A3 OF 3.6.-431 A C Struoturo SnIroto (13.8 p..m.ability,
- ess.f Groking,
'P goaFo kV take eff GtFruturo) material (spalling,-
Goaling)!aggroooi',., shem-isal Substation/Switchyard SS Steel (E) Air-outdoor Loss of material/corrosion Structures Monitoring III.A3-12 35.51-25 A Steel Structures {1 38 kV Program I take-off tower, supports for 138 kV& 13.8 kV (E) Air-indoor Loss of materiallcorrosion Structures Monitoring III.A3-12 3.5.1-25 A disconnect switches,--4- uncontrolled Program ff #truptur-)
nVtk (includes the attached underground take-offs),
South Control House]
Transmission Towers SS Steel (E) Air-outdoor Loss of material/corrosion Structures Monitoring III.A3-12 3.5.1-25 A Program Table 3.5.2-8 Notes:
Plant StandardNotes Note - The following plant standard notes have generic applicability, but may or may not be used for each SSC:
Si. Thermal embrittlement is only applicable to CASS components that are subject to temperatures in excess of 482°F.
S2. Cracking due to SCC is only applicable to stainless steel components exposed to temperatures greater than 1400 F.
S3. Selective leaching is applicable to the material group 'Steel,' but only for gray cast iron components.
Industry StandardNotes See last page of Section 3.5 tables.
See Table 2,01-1 for definitions of intended function and Table 3.0-1 for definitions of service environments.
Kewaunee Power Station Page 3-842 Application for Renewed Operating License
Kewaunee Power Station Application for Renewed Operating License Appendix A - USAR Supplement A2.1.21 NON-EQ INACCESSIBLE MEDIUM-VOLTAGE CABLES Program Description The Non-EQ Inaccessible Medium-Voltage Cables program is a new program that will correspond to NUREG-1801,Section XI.E3, "Inaccessible Medium-Voltage Cables Not Subject to 10 CFR 50.49 Environmental Qualification Requirements."
The Non-EQ Inaccessible Medium-Voltage Cables program will manage the aging effects of localized damage and breakdown of insulation leading to electrical failure for non-EQ, inaccessible, medium-voltage cables within the scope of license renewal that are subject to an adverse localized environment caused by exposure to significant moisture simultaneously with significant voltage.
Significant moisture is defined as periodic exposures to moisture that last more than a few days (e.g., cable in standing water). Periodic exposures to moisture that last less than a few days (i.e., normal rain and drain) are not significant. Significant voltage exposure is defined as being subjected to system voltage for more than twenty-five percent of the time. An adverse localized environment is a condition in a limited plant area that is significantly more severe than the specified service environment for the cables (power, control, and instrumentation) and connections. An adverse localized environment is significant if it could appreciably increase the rate of aging of a component, or has an immediate adverse effect on operability.
The program will inspect the in-scope manhole east of the tertiary auxiliary transformer and the pulling pit for water collection that could cause the in-scope cables to be exposed to significant moisture and will remove water, if required. The program will perform a test on the in-scope non-EQ inaccessible medium-voltage cables to provide an indication of the condition of the conductor insulation.
Inspection of the in-scope manhole east of the tertiary auxiliary transformer and the pulling pit for water collection will be performed prior to the period of extended operation, and the inspection will be repeated every two years thereafter.
Testing of the in-scope inaccessible medium-voltage cables exposed to significant moisture and significant voltage will be performed prior)to the period of extended operation, and the tests will be repeated every ten years thereafter.
PageA-21
Kewaunee Power Station Application for Renewed Operating License Appendix A - USAR Supplement Table A6.0-1 License Renewal Commitments Item Commitment Source Schedulea 15 The Non-EQ Electrical Cable Non-EQ Prior to the Connections program will be Electrical Cable Period of established. The program will perform a Connections Extended one-time inspection, on a sampling Operation basis, to confirm the absence of loosening of bolted connections.
16 The Non-EQ Inaccessible Non-EQ Prior to the Medium-Voltage Cables program will be Inaccessible Period of established. The program will Medium-Voltage Extended periodically inspect the in-scope Cables Operation manhole/pulling pit for water collection I and will remove water, if required. The program will periodically perform a test Thereafter, the manhole/pulling I
on the in-scope cables to provide an pLt inspections indication of the condition of the will not exceed conductor insulation. a 2-year interval.
Thereafter, the cable testing will not exceed a 10-year interval.
17 The Non-EQ Instrumentation Circuits Non-EQ Prior to the Subject to Sensitive, High-Voltage, Instrumentation Period of Low-Level Signals program will be Circuits Subject Extended established. The program will to Sensitive, Operation periodically perform a proven cable High-Voltage, system test for detecting deterioration of Low-Level Thereafter, the the insulation system for those electrical Signals cable testing cables and connections disconnected and calibration during calibration, or will periodically reviews will not review the results and findings of exceed a calibrations for those electrical cables 10-year that remain connected during the interval.
calibration process.
Page A-48
Kewaunee Power Station Application for Renewed Operating License Appendix B - Aging Managment Programs voltage exposure is defined as being subjected to system voltage for more than twenty-five percent of the time. An adverse localized environment is a condition in a limited plant area that is significantly more severe than the specified service environment for the cables (power, control, and instrumentation) and connections. An adverse localized environment is significant if it could appreciably increase the rate of aging of a component, or has an immediate adverse effect on operability.
The program will inspect the in-scope manhole east of the tertiary auxiliary transformer and the in-scope pulling pit for water collection that could cause the in-scope cables to be exposed to significant moisture and will remove water, if required. The program will perform a test on the in-scope non-EQ inaccessible medium-voltage cables to provide an indication of the condition of the conductor insulation. The specific type of test performed will be determined prior to the initial test, and will be a proven test for detecting deterioration of the insulation system due to wetting, such as power factor, partial discharge, or polarization index, as described in EPRI TR-103834-P1-2, "Effects of Moisture on the Life of Power Plant Cables, Part 1, Medium-Voltage Cables, Part 2, Low-Voltage Cables, Electric Power Research Institute," or other testing that is state-of-the-art at the time the test is performed.
Inspection of the in-scope manhole east of the tertiary auxiliary transformer and the in-scope pulling pit for water collection will be performed prior to the period of extended operation, and the inspection will be repeated every two years thereafter.
Testing of the in-scope inaccessible medium-voltage cables exposed to significant moisture and significant voltage will be performed prior to the period of extended operation, and the tests will be repeated every ten years thereafter.
NUREG-1801 Consistency The Non-EQ Inaccessible Medium-Voltage Cables program is a new program that will be consistent, with the recommendations of NUREG-1801,Section XI.E3, "Inaccessible Medium-Voltage Cables Not Subject to 10 CFR 50.49 Environmental Qualification Requirements."
Exceptions to NUREG-1801 The Non-EQ Inaccessible Medium-Voltage Cables program takes no exceptions to the recommendations of NUREG-1801, Section XI.E3, "Inaccessible Page B-91