AL MV Cable SOW.pdf

Statement of Work for Replacement of the Medium Voltage Cables at the Alcova Power Plant

pg. 1 of 8 pgs.

1) References:

(a) American Society of Mechanical Engineers (ASME)

(i) ASME Y14.1-2005(2010) Decimal Inch Drawing Sheet Size and Format

(ii) ASME BPVC-IX 2007 Boiler and Pressure Vessel Code, Section IX

– Welding and Brazing Qualifications

(b) Institute of Electrical and Electronic Engineers (IEEE)

(i) IEEE 315-1975(1993) Graphic Symbols for Electrical and Electronics

Diagrams (Including Reference Designation Letters)

(ii) IEEE C37.2-2008 Electrical Power System Device Function Numbers, Acronyms, and Contact Designations (iii)IEEE Y32.9-1972(1989) Graphic Symbols for Electrical Wiring and

Layout Diagrams Used in Architecture and Building Construction

(iv) IEEE C2-2007 National Electrical Safety Code (NESC)

(v) IEEE 80-2000 Safety in AC Substation Grounding

(vi) IEEE 81-1983 Measuring Earth Resistivity, Ground Impedance, and Earth

Surface Potentials of a Ground System

(vii) IEEE 142-2007 Grounding of Industrial and Commercial Power

Systems

(viii) IEEE 837-2002 Qualifying Permanent Connections Used in

Substation Grounding

(ix) IEEE 48-1996(2003) Alternating-Current Cable Terminations 2.5 kV

Through 765 kV

(x) IEEE 386-2006 Separable Insulated Connectors Systems for Power

Distribution Systems Above 600 V.

(xi) IEEE 400.2-2004 Field Testing of Shielded Power Cable Systems

Using Very Low Frequency

(xii) IEEE 422-1986 Design and Installation of Cable Systems in

Power Generating Stations.

(xiii) IEEE 525-2007 Design and Installation of Cable Systems in

Substations.

(xiv) IEEE C37.20.1 Metal-Enclosed Low-Voltage (1000 Vac and below, 3200 Vdc and below) Power Circuit Breaker Switchgear

(c) National Electrical Manufacturers Association (NEMA)

(i) NEMA ICS 1-2000(2008) Industrial Control and Systems: General Requirements

pg. 2 of 8 pgs.

(ii) NEMA WC 74-2006 5-46 KV Shielded Power cable for Use in the Transmission and Distribution of Electric Energy

(d) ASTM International (ASTM)

(i) ASTM A 123/A 123M-08 Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products

(ii) ASTM A 153/A 153M-05 Zinc Coatings (Hot-Dip) on Iron and Steel

Hardware

1. ASTM B 8-04 Concentric-Lay-Stranded Copper Conductors, Hard, Medium-Hard, or Soft (iii)ASTM B 3-01(2007) Soft or Annealed Copper Wire

(iv) ASTM B 228-04 Concentric-Lay-Stranded Copper-Clad Steel

Conductors

(v) ASTM B 496-04 Compact Round Concentric-Lay-Stranded Copper

Conductors

(e) National Fire Protection Association (NFPA)

(i) NFPA 70-2020 National Electrical Code (NEC)

(f) Underwriters Laboratories (UL)

(i) UL 467-2004 Grounding and Bonding Equipment

(ii) UL 486A-486B-2003 Wire Connectors

(g) Association of Edison Illuminating Companies (AEIC)

(i) AEIC CS8-07 Extruded Dielectric Shielded Power Cables Rated 5

Through 46 kV

2) Fabricate and supply Cable Bus system to run between breaker 118 and transformer

KX1A meeting all the following requirements:

a) 8,000V

b) Continuous current-carrying capacity 1920 amperes.

c) 3phase

d) 60 Hertz

e) Stranded copper cables

f) Basic impulse insulation level (BIL) of 95 kV at 5,370 feet.

g) Approximate length 146’

h) Capable of withstanding a through-fault current of 29,037 asymmetrical amperes (three-phase fault) for approximately 0.005 seconds.

i) Include all accessories required for complete installation. No Asbestos or Lead containing materials may be used.

pg. 3 of 8 pgs.

j) Outdoor bus sections will be exposed to sun and will be subject to temperatures ranging from minus 15 degrees C to plus 30 degrees C.

k) All connection hardware shall be manufacturer’s standard and included in bid price. (U.S.

Bureau of Reclamation (USBR) preference is for bronze bolts, with silicon bronze nuts, washers, and Belleville washers.)

l) Contact surfaces of joints and connections of conductors shall be silver-to-silver.

m) Support insulated 3-phase bus inside housing with appropriate insulating supports.

n) Bus and housing connections shall have slotted holes to allow enough adjustments of connections to permit proper installation and alignment. Provision shall be made for expansion and contraction caused by specified temperature range, and for minimizing vibration under operating conditions. Expansion joints shall not require sliding contacts.

Connectors or splices shall be constructed so there will be no electrolytic effects.

o) Provide all required field splices and connections complete with hardware. Provide suitable re-useable rubber (silicone) insulating covers for all connection joints, including flexible interface connections at the transformer and at the switchgear end of the bus duct assembly. No cold or heat shrinkable products are allowed on the primary conductors inside the bus duct.

p) Bus Duct assembly (metal enclosure) will have the following design criteria:

i) All connections between bus duct segments will be weatherproof.

ii) Removable access covers at bus duct section connections shall be provided so entire panels need not be removed for inspection.

iii) Finish of the cable bus enclosure, mounting supports, deck penetration sealing plates/flanges shall be manufacturer’s standard finish. The color shall be: ANSI 61 gray

q) Bus Termination connections will meet the following criteria:

i) Connectors will attach directly to the X-bushing terminal paddles on the top end, and to bus work in the unit breakers cubicles on the bottom end.

r) See the following drawings for routing

i) 144-D-3977 Alcova Switchyard (Transformer Area Equipment & Grounding Plans)

ii) 144-D-3994 Alcova Power Plant (Transformer Area – Foundations Location Plan)

iii) 144-D-4003 Alcova Power Plant (General Arrangement Floors-EL.5348.92 and EL.

5350.17)

iv) 144-D-4091 Alcova Switchyard (Transformer Area Sections and Details)

v) 144-D-4099 Alcova Power Plant (Transformer Area Tunnels and Trenches)

(i) 144M-703-49-5 Metal clad SWGR Indoor Horizontal Draw out

vi) Route

vii) Transformer

3) Fabricate and supply Cable Bus system to run between breaker 218 and transformer KX2A meeting all the following requirements:

a) 8,000V

b) Continuous current-carrying capacity 1920 amperes.

c) 3phase

d) 60 Hertz

pg. 4 of 8 pgs.

e) Stranded copper cables

f) Basic impulse insulation level (BIL) of 95 kV at 5,370 feet.

g) Approximate length 159’

h) Capable of withstanding a through-fault current of 39,037 asymmetrical amperes (three-phase fault) for approximately 0.005 seconds.

i) Include all accessories required for complete installation. No Asbestos or Lead containing materials may be used.

j) Outdoor bus sections will be exposed to sun and will be subject to temperatures ranging from minus 15 degrees C to plus 30 degrees C.

k) All connection hardware shall be manufacturer’s standard and included in bid price.

(USBR preference is for bronze bolts, with silicon bronze nuts, washers, and Belleville washers.)

l) Contact surfaces of joints and connections of conductors shall be silver-to-silver.

m) Support insulated 3-phase bus inside housing with appropriate insulating supports.

n) Bus and housing connections shall have slotted holes to allow enough adjustments of connections to permit proper installation and alignment. Provision shall be made for expansion and contraction caused by specified temperature range, and for minimizing vibration under operating conditions. Expansion joints shall not require sliding contacts.

Connectors or splices shall be constructed so there will be no electrolytic effects.

o) Provide all required field splices and connections complete with hardware. Provide suitable re-useable rubber (silicone) insulating covers for all connection joints, including flexible interface connections at the transformer and at the switchgear end of the bus duct assembly. No cold or heat shrinkable products are allowed on the primary conductors inside the bus duct.

p) Bus Duct assembly (metal enclosure) will have the following design criteria:

i) All connections between bus duct segments will be weatherproof.

ii) Removable access covers at bus duct section connections shall be provided so entire panels need not be removed for inspection.

iii) Finish of the cable bus enclosure, mounting supports, deck penetration sealing plates/flanges shall be manufacturer’s standard finish. The color shall be: ANSI 61 gray

q) Bus Termination connections will meet the following criteria:

i) Connectors will attach directly to the X-bushing terminal paddles on the top end, and to bus work in the unit breakers cubicles on the bottom end.

r) See the following drawings for routing

i) 144-D-3977 Alcova Switchyard (Transformer Area Equipment & Grounding Plans)

ii) 144-D-3994 Alcova Power Plant (Transformer Area – Foundations Location Plan)

iii) 144-D-4003 Alcova Power Plant (General Arrangement Floors-EL.5348.92 and EL.

5350.17)

iv) 144-D-4091 Alcova Switchyard (Transformer Area Sections and Details)

v) 144-D-4099 Alcova Power Plant (Transformer Area Tunnels and Trenches)

(i) 144M-703-49-5 Metal clad SWGR Indoor Horizontal Draw out

vi) Route

pg. 5 of 8 pgs.

vii) Transformer

4) Supply cable, termination kits and compression lugs to run between breaker 118 and disconnect 113 meeting all the following requirements:

a) 8,000V

b) Continuous current-carrying capacity 88 amperes.

c) 3phase

d) 60 Hertz

e) Stranded copper cables

f) Basic impulse insulation level (BIL) of 95 kV at 5,370 feet.

g) Approximate length 110’

h) Capable of withstanding a through-fault current of 3,716 asymmetrical amperes (double-line to ground fault fault) for approximately 2.6 seconds.

i) Temperature rating of the cable shall be 90 degrees C.

j) Include all accessories required for complete installation. No Asbestos or Lead containing materials may be used.

k) All connection hardware shall be included in bid price. (USBR preference is for bronze bolts, with silicon bronze nuts, washers, and Belleville washers.)

l) See the following drawings for routing

i) 144-D-4003 Alcova Power Plant (General Arrangement Floors-EL.5348.92 and EL.

5350.17)

ii) 144M-703-49-5 Metal clad SWGR Indoor Horizontal Draw out

5) A design submittal will be required after award and before fabrication can begin. Bids should include pricing for submittals.

6) All bus provided shall have successfully passed factory design and production testing in accordance with ANSI C37.23. Copies of all documentation from tests performed during construction, quality assurance and acceptance shall be provided for review before any payment is made.

7) Complete design and assembly drawings will be provided with the shipment of materials.

a) All drawings will be in USBR format and conform to USBR standards

i) Drawings, general:

(1) Device designations and symbols:

(a) Conform to IEEE 315, IEEE C37.2, IEEE Y32.9, and NEMA ICS-1.

(b) As indicated on Standard Drawings 104-D-757 and 104-D-1150.

(2) Size: D-size prints as defined in ASME Y14.1 made from original drawings.

(3) Indicate changes on revised drawings to distinguish them from previous submittals. Describe reasons for significant changes in submittal letters.

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ii) Approval Drawings in Government Format:

(1) Drawings, general:

(a) Device designations and symbols:

(i) Conform to IEEE 315, IEEE C37.2, IEEE Y32.9, and NEMA ICS-1.

(ii) As indicated on Standard Drawings 104-D-757 and 104-D-1150.

(b) Size: D-size prints as defined in ASME Y14.1 made from original drawings.

(c) Indicate changes on revised drawings to distinguish them from previous versions of the drawing. Describe reasons for significant changes.

(2) Approval Drawings in Government Format:

(a) Furnish with Government title block and in form as indicated on Standard

Drawing 40-D-7102.

(b) Government will provide specific title block information when drawings are submitted.

(c) Government may revise conductor or device designations on Contractor’s drawings when drawings are approved at no change in contract price or completion time.

(3) Schematic Diagrams:

(a) In accordance with Standard Drawing 104-D-1150.

(b) Format:

(i) Vertical ladder diagram form.

(ii) Label rungs with sequential numbers starting with number 1.

(iii)Locate rung numbers adjacent and to left of associated rung.

(iv) Provide unique rung numbers for each circuit.

(c) Conductor designations: As indicated on drawings.

(d) Indicate device terminal designations.

(e) Indicate functional operation.

(f) Describe unusual or nonstandard operation.

(g) Indicate ratings and/or values of devices.

(h) Indicate cross-referencing between other schematics and wiring diagrams.

(i) Conductor designations: As indicated on drawings or as developed by

Contractor. Contractor-developed conductor designations shall consist of:

(i) Circuit prefix

(ii) Rung number

pg. 7 of 8 pgs.

(iii)Unique rung wire letter such as 5P15C (“5”-Unit Number, “P”- Protection Circuit, “15”-Rung Number, “C”-Unique Rung Wire Letter).

(4) Wiring Diagram Drawings:

(i) Match with schematic diagram drawings.

(ii) Indicate point-to-point wiring in accordance with Standard Drawing 104-

D-1165.

(iii)Indicate equipment as mounted on back, side, swing, and door panels.

Show panel as viewed from wiring side of panel.

(iv) Identify each item of equipment with designation indicated on schematic diagram.

(v) Indicate wiring of devices and items of equipment including terminal number.

(vi) Indicate cables, cable and individual wire designations, and connections to external circuits. Government will show cables, cable and individual wire designations, and connections when wiring diagrams are first submitted for approval. Provide room on drawings for Government to add cables.

(vii) Cable designations: Like designations on Standard Drawing 104-D-1165.

(viii) Show no more than one panel per drawing.

(5) Sample Wiring Diagram: Sample of actual wiring diagram that will be submitted as check print and final drawing.

(6) Approval Drawings and Data in Manufacturer’s Format:

(a) General: Furnish with manufacturer’s standard format, except as noted below.

(b) Equipment Layout Drawings:

(i) Indicate dimensions of equipment.

(ii) Indicate location of devices and items of equipment including nameplates, terminal blocks, wiring ducts, bus, conduit entries, and other features in their relative physical location.

(iii)Indicate method of securing equipment to deck, floor, or wall.

(iv) Identify each device and item of equipment with a bill of material reference number.

(7) Bill of Material List:

(i) Provide information on manufacturer, style, type, rating, quantity, and other identifying information for each device or item of equipment.

(ii) Provide unique reference number for each device or item of equipment listed on bill of material.

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(8) Nameplate Lists: Provide information on type of material, size, and engraved lettering.

(9) Manufacturer’s Technical Catalog Data:

(i) Provide technical data for each device or item of equipment.

(ii) Include manufacturer’s name and address; catalog number, type, style, or model number; electrical ratings; and dimensions.

(iii)Where several items are listed on same sheet, indicate items being submitted for approval.

(iv) Demonstrate proposed device or item of equipment meets specifications requirements.

(v) Mark catalog data sheet with appropriate bill of material (BOM) item number.

(vi) Assemble catalog data sheet into one enclosing cover with bill of material

(BOM) index,

(10) Check Prints:

(a) Schematic and wiring diagrams which indicate “As Built” condition of equipment at time of shipment.

(b) Mark with changes and revisions made during installation and checkout of equipment.

(c) Maintain separate, identical set of prints for use in preparing final drawings.

8) Test Reports:

a) Typed, 8 1/2- by 11-inch sheets.

b) Certified.

c) Submit multi-page reports in bound folder or three-ring binder.

d) Operation and Maintenance Instructions Books:

i) Electronic copies:

(1) Adobe Acrobat (.pdf) format on CD-ROM discs.

(2) Conform to print copies.

(3) Bookmark file(s) to aid in navigating.

ii) Provide following items:

(1) Index sheet at front of each book which provides page or index tab number information for each device or item of equipment in book.

(2) Manufacturer’s operation and maintenance procedures; installation details, as necessary; and catalog data sheets for each device or item of equipment.

(3) List of recommended spare parts and components.

pg. 9 of 8 pgs.

(4) Complete parts lists for all replacement parts.

(5) Copies of all factory test reports.

(6) Copies of bills of materials

(7) Copies of all drawings.

(8) Revised to reflect approval comments

9) Installation will be completed by local forces under the guidance of the manufacturer’s on-site representative.

10) Installation will start on 1/5/2021.

11) Manufacturer’s representative will need to be on-site during the installation between

07:00 and 17:30 MST.

12) Installation must be completed by 4/1/2021.

13) All parts will carry a 5-year manufacturer’s warranty starting on the day the

Government accepts delivery of all the finished products.