Loading...
HomeMy WebLinkAboutScope of Work 1 General Description of Work 1.1 Work to be performed under this Contract shall be the ground bed installations at Parachute Creek Gas Plant 2, Parachute Creek Gas Plant 3.5, Cottonwood Compressor Station, and Starkey Compressor Station. 1.2 Parachute Creek Plant 2 Contractor is responsible for the following: Supply and install Nema 4 12” x 12” x 6” galvanized & vented junction box for anodes. Supply and install five circuit with 50A/50mV shunts. Supply and install concrete supports. 1.2.1.2.1 See calculations for assumed concrete size and rebar. Supply and install Nema 4 18” x 18” x 6” or greater galvanized & vented junction box for negative cables. Supply and install 1 ea open and 3 ea resisted (1 ohm 300 watt slide resistors with 50A/50mV shunts) circuits & associated equipment. Supply and install concrete supports. 1.2.2.2.1 See calculations for assumed concrete size and rebar. Install company provided rectifier and RMU equipment. Supply and install concrete supports. 1.2.3.1.1 See calculations for assumed concrete size and rebar. Supply and install unistrut H-frame for use with mounting the rectifier. Hydrovacuum excavate (daylight) 10 feet underground at each of the 20 anode locations to verify no underground structures/equipment exist. Drill 10 inch x 30 foot holes at hydrovacuum excavated locations from previous step. Install/load anodes in the drilled locations from previous step. Backfill bottom 20 feet of holes with Loresco SC-3 coke breeze. Backfill remaining 10 feet of holes with field dirt. Hydrovacuum to 3 foot deep trench with 6 inch bottom and 45 degree sloping for cable headers at locations in accordance with the drawing. See trench sketch for trench dimensions. Hydrovacuum to 3 foot deep trench with 6 inch bottom and 45 degree sloping for cable subheaders at locations in accordance with the drawing. See trench sketch for trench dimensions. Lay DC cables in accordance with the drawing. Contractor to supply header and subheader cables of type #4 HMWPE. 1.2.11.1.1 Install “Mylar” marking tape indicated “Danger Electric Line Buried Below” 6 inches below grade. 1.2.11.1.2 Anode cables shall be red. 1.2.11.1.3 Negative cables shall be black. Splice all connections to header & sub-header cables. 1.2.11.2.1 Assume two splices per anode. 1.2.11.2.2 Assume ten additional splices for anode cables at the station. 1.2.11.2.3 Assume negative cables are straight runs from the connection point/s to the junction box. 1.2.11.2.3.1 No splices allowed for negative cables. 1.2.11.2.4 Contractor to supply all splicing equipment, fittings, and materials. Cad weld negative cables to the above-grade piping locations in accordance with the drawing. 1.2.11.3.1 Assume two separate cables and two separate cad welds for each cable (4 total). 1.2.11.3.1.1 Suction piping 1.2.11.3.1.2 Discharge piping Terminate all cables. 1.2.11.4.1 Terminate negative cables in the negative junction box. 1.2.11.4.2 Terminate anode cables in the anode junction box. Backfill all trenches with fine soil. Supply and install 240 VAC power cable between rectifier and facility MCC building. Pull permit. Install in conduit in accordance with 26 05 00E. 1.2.12.2.1 Rigid galvanized (hot dipped) steel conduit and fittings required. 1.2.12.2.2 Bury at 24 inches or greater and encase in 3 inches or greater of red concrete where road crossings and/or areas of vehicle traffic exist including, but not limited to facility roadways and parking areas. Terminate cables at rectifier and MCC building. Wire and seal classified areas. 1.2.12.4.1 Reference standard Electrical Area Classification Drawing for use with evaluating seal locations. Hydrovac and install bollards at rectifier and junction box locations as determined by the Authorized Company Representative. Assume 8 ea bollards of size 6 inch x 72 inch. 1.2.13.1.1 36 inches above grade and 36 inches below grade. Backfill and compact all excavated locations in accordance with Company standards and requirements (ASTM 95%). Install road base at rectifier and junction box locations. Clean-up Work Sites. Regrade, stabilize and reseed all disturbed Work Sites to original state and in accordance with Company standards. 1.3 Parachute Creek Plant 3.5 Contractor is responsible for the following: Supply and install Nema 4 12” x 12” x 6” galvanized & vented junction box for anodes. Supply and install five circuit with 50A/50mV shunts. Supply and install concrete supports. 1.3.1.2.1 See calculations for assumed concrete size and rebar. Supply and install Nema 4 18” x 18” x 6” or greater galvanized & vented junction box for negative cables. Supply and install 1 ea open and 3 ea resisted (1 ohm 300 watt slide resistors with 50A/50mV shunts) circuits & associated equipment. Supply and install concrete supports. 1.3.2.2.1 See calculations for assumed concrete size and rebar. Install company provided rectifier and RMU equipment. Supply and install concrete supports. 1.3.3.1.1 See calculations for assumed concrete size and rebar. Supply and install unistrut H-frame for use with mounting the rectifier. Hydrovacuum excavate (daylight) 10 feet underground at each of the 20 anode locations to verify no underground structures/equipment exist. Drill 10 inch x 30 foot holes at hydrovacuum excavated locations from previous step. Install/load anodes in the drilled locations from previous step. Backfill bottom 20 feet of holes with Loresco SC-3 coke breeze. Backfill remaining 10 feet of holes with field dirt. Hydrovacuum to 3 foot deep trench with 6 inch bottom and 45 degree sloping for cable headers at locations in accordance with the drawing. See trench sketch for trench dimensions. Hydrovacuum to 3 foot deep trench with 6 inch bottom and 45 degree sloping for cable subheaders at locations in accordance with the drawing. See trench sketch for trench dimensions. Lay DC cables in accordance with the drawing. Contractor to supply header and subheader cables of type #4 HMWPE. 1.3.11.1.1 Install “Mylar” marking tape indicated “Danger Electric Line Buried Below” 6 inches below grade. 1.3.11.1.2 Anode cables shall be red. 1.3.11.1.3 Negative cables shall be black. Splice all connections to header & sub-header cables. 1.3.11.2.1 Assume two splices per anode. 1.3.11.2.2 Assume ten additional splices for anode cables at the station. 1.3.11.2.3 Assume negative cables are straight runs from the connection point/s to the junction box. 1.3.11.2.3.1 No splices allowed for negative cables. 1.3.11.2.4 Contractor to supply all splicing equipment, fittings, and materials. Cad weld negative cables to the above-grade piping locations in accordance with the drawing. 1.3.11.3.1 Assume two separate cables and two separate cad welds for each cable (4 total). 1.3.11.3.1.1 Suction piping 1.3.11.3.1.2 Discharge piping Terminate all cables. 1.3.11.4.1 Terminate negative cables in the negative junction box. 1.3.11.4.2 Terminate anode cables in the anode junction box. Supply and install 240 VAC power cable between rectifier and facility MCC building. Pull permit. Install in conduit in accordance with 26 05 00E. 1.3.12.2.1 Rigid galvanized (hot dipped) steel conduit and fittings required. 1.3.12.2.2 Bury at 24 inches or greater and encase in 3 inches or greater of red concrete where road crossings and/or areas of vehicle traffic exist including, but not limited to facility roadways and parking areas. Terminate cables at rectifier and MCC building. Wire and seal classified areas. 1.3.12.4.1 Reference standard Electrical Area Classification Drawing for use with evaluating seal locations. Hydrovac and install bollards at rectifier and junction box locations as determined by the Authorized Company Representative. Assume 8 ea bollards of size 6 inch x 72 inch. 1.3.13.1.1 36 inches above grade and 36 inches below grade. Backfill and compact all excavated locations in accordance with Company standards and requirements (ASTM 95%). Install road base at rectifier and junction box locations. Clean-up Work Sites. Regrade, stabilize and reseed all disturbed Work Sites to original state and in accordance with Company standards. 1.4 Cottonwood Compressor Station Contractor is responsible for the following: Supply and install Nema 4 12” x 12” x 6” galvanized & vented junction box for anodes. Supply and install five circuit with 50A/50mV shunts. Supply and install concrete supports. 1.4.1.2.1 See calculations for assumed concrete size and rebar. Supply and install Nema 4 18” x 18” x 6” or greater galvanized & vented junction box for negative cables. Supply and install 1 ea open and 3 ea resisted (1 ohm 300 watt slide resistors with 50A/50mV shunts) circuits & associated equipment. Supply and install concrete supports. 1.4.2.2.1 See calculations for assumed concrete size and rebar. Install company provided rectifier and RMU equipment. Supply and install concrete supports. 1.4.3.1.1 See calculations for assumed concrete size and rebar. Supply and install unistrut H-frame for use with mounting the rectifier. Hydrovacuum excavate (daylight) 10 feet underground at each of the 16 anode locations to verify no underground structures/equipment exist. Drill 10 inch x 30 foot holes at hydrovacuum excavated locations from previous step. Install/load anodes in the drilled locations from previous step. Backfill bottom 20 feet of holes with Loresco SC-3 coke breeze. Backfill remaining 10 feet of holes with field dirt. Hydrovacuum to 3 foot deep trench with 6 inch bottom and 45 degree sloping for cable headers at locations in accordance with the drawing. See trench sketch for trench dimensions. Hydrovacuum to 3 foot deep trench with 6 inch bottom and 45 degree sloping for cable subheaders at locations in accordance with the drawing. See trench sketch for trench dimensions. Lay DC cables in accordance with the drawing. Contractor to supply header and subheader cables of type #4 HMWPE. 1.4.11.1.1 Install “Mylar” marking tape indicated “Danger Electric Line Buried Below” 6 inches below grade. 1.4.11.1.2 Anode cables shall be red. 1.4.11.1.3 Negative cables shall be black. Splice all connections to header & sub-header cables. 1.4.11.2.1 Assume two splices per anode. 1.4.11.2.2 Assume ten additional splices for anode cables at the station. 1.4.11.2.3 Assume negative cables are straight runs from the connection point/s to the junction box. 1.4.11.2.3.1 No splices allowed for negative cables. 1.4.11.2.4 Contractor to supply all splicing equipment, fittings, and materials. Cad weld negative cables to the above-grade piping locations in accordance with the drawing. 1.4.11.3.1 Assume two separate cables and two separate cad welds for each cable (4 total). 1.4.11.3.1.1 Suction piping 1.4.11.3.1.2 Discharge piping Terminate all cables. 1.4.11.4.1 Terminate negative cables in the negative junction box. 1.4.11.4.2 Terminate anode cables in the anode junction box. Supply and install 240 VAC power cable between rectifier and facility MCC building. Pull permit. Install in conduit in accordance with 26 05 00E. 1.4.12.2.1 Rigid galvanized (hot dipped) steel conduit and fittings required. 1.4.12.2.2 Bury at 24 inches or greater and encase in 3 inches or greater of red concrete where road crossings and/or areas of vehicle traffic exist including, but not limited to facility roadways and parking areas. Terminate cables at rectifier and MCC building. Wire and seal classified areas. 1.4.12.4.1 Reference standard Electrical Area Classification Drawing for use with evaluating seal locations. Hydrovac and install bollards at rectifier and junction box locations as determined by the Authorized Company Representative. Assume 8 ea bollards of size 6 inch x 72 inch. 1.4.13.1.1 36 inches above grade and 36 inches below grade. Backfill and compact all excavated locations in accordance with Company standards and requirements (ASTM 95%). Install road base at rectifier and junction box locations. Clean-up Work Sites. Regrade, stabilize and reseed all disturbed Work Sites to original state and in accordance with Company standards. 1.5 Starkey Compressor Station Contractor is responsible for the following: Supply and install Nema 4 12” x 12” x 6” galvanized & vented junction box for anodes. Supply and install five circuit with 50A/50mV shunts. Supply and install concrete supports. 1.5.1.2.1 See calculations for assumed concrete size and rebar. Supply and install Nema 4 18” x 18” x 6” or greater galvanized & vented junction box for negative cables. Supply and install 1 ea open and 3 ea resisted (1 ohm 300 watt slide resistors with 50A/50mV shunts) circuits & associated equipment. Supply and install concrete supports. 1.5.2.2.1 See calculations for assumed concrete size and rebar. Install company provided rectifier and RMU equipment. Supply and install concrete supports. 1.5.3.1.1 See calculations for assumed concrete size and rebar. Supply and install unistrut H-frame for use with mounting the rectifier. Hydrovacuum excavate (daylight) 10 feet underground at each of the 16 anode locations to verify no underground structures/equipment exist. Drill 10 inch x 30 foot holes at hydrovacuum excavated locations from previous step. Install/load anodes in the drilled locations from previous step. Backfill bottom 20 feet of holes with Loresco SC-3 coke breeze. Backfill remaining 10 feet of holes with field dirt. Hydrovacuum to 3 foot deep trench with 6 inch bottom and 45 degree sloping for cable headers at locations in accordance with the drawing. See trench sketch for trench dimensions. Hydrovacuum to 3 foot deep trench with 6 inch bottom and 45 degree sloping for cable subheaders at locations in accordance with the drawing. See trench sketch for trench dimensions. Lay DC cables in accordance with the drawing. Contractor to supply header and subheader cables of type #4 HMWPE. 1.5.11.1.1 Install “Mylar” marking tape indicated “Danger Electric Line Buried Below” 6 inches below grade. 1.5.11.1.2 Anode cables shall be red. 1.5.11.1.3 Negative cables shall be black. Splice all connections to header & sub-header cables. 1.5.11.2.1 Assume two splices per anode. 1.5.11.2.2 Assume ten additional splices for anode cables at the station. 1.5.11.2.3 Assume negative cables are straight runs from the connection point/s to the junction box. 1.5.11.2.3.1 No splices allowed for negative cables. 1.5.11.2.4 Contractor to supply all splicing equipment, fittings, and materials. Cad weld negative cables to the above-grade piping locations in accordance with the drawing. 1.5.11.3.1 Assume two separate cables and two separate cad welds for each cable (4 total). 1.5.11.3.1.1 Suction piping 1.5.11.3.1.2 Discharge piping Terminate all cables. 1.5.11.4.1 Terminate negative cables in the negative junction box. 1.5.11.4.2 Terminate anode cables in the anode junction box. Supply and install 240 VAC power cable between rectifier and facility MCC building. Pull permit. Install in conduit in accordance with 26 05 00E. 1.5.12.2.1 Rigid galvanized (hot dipped) steel conduit and fittings required. 1.5.12.2.2 Bury at 24 inches or greater and encase in 3 inches or greater of red concrete where road crossings and/or areas of vehicle traffic exist including, but not limited to facility roadways and parking areas. Terminate cables at rectifier and MCC building. Wire and seal classified areas. 1.5.12.4.1 Reference standard Electrical Area Classification Drawing for use with evaluating seal locations. Hydrovac and install bollards at rectifier and junction box locations as determined by the Authorized Company Representative. Assume 8 ea bollards of size 6 inch x 72 inch. 1.5.13.1.1 36 inches above grade and 36 inches below grade. Backfill and compact all excavated locations in accordance with Company standards and requirements (ASTM 95%). Install road base at rectifier and junction box locations. Clean-up Work Sites. Regrade, stabilize and reseed all disturbed Work Sites to original state and in accordance with Company standards. 1.6 Additional Notes Contractor shall regrade, stabilize and reseed all disturbed Work Sites to their original state and in accordance with Company standards. Contractor to supply backfill as needed. Contractor to repair and recoat all pipe that is disturbed/damaged as part of this work prior to backfilling. Contractor to supply all materials unless identified on the Company’s purchase orders attached to this bid package. Company to supply rectifier, anodes, & RMU. All excavation inside a facility less than 10 ft. deep shall be hydrovacuum excavated. 2 Grading Permit Questions by Site 2.1 Parachute Creek Plant 2 Overview: Installing new conventional ground bed. Will excavate 20 separate holes to install anodes at various locations in the facility, excavate trenches to tie anodes together, excavate trenches to run negative cables to abovegrade piping, and excavate trenches to run AC cables to existing power locations within the facilities. What is our grading plan? No grading plan. The excavation completed here will be regraded to the same elevation as previous to excavation. What will the backfill be like? Backfill will utilize a combination of the excavated soil and fine soil. Site will be restabilized and vegetated/seeded as close to original state as reasonably possible. What drainage plans do we have? Due to size and scope, no drainage plan is designed. Excavation activities will utilize industry best practices with regards to silt fences/straw swaddles to prevent erosion and dispersion offsite. Add anything you can that’s pertinent and easily added. N/A. What is the total Earthwork? Square footage & Cubic Yards? 3,400 square feet and 777 cubic yards. 2.2 Parachute Creek Plant 3.5 Overview: Installing new conventional ground bed. Will excavate 20 separate holes to install anodes at various locations in the facility, excavate trenches to tie anodes together, excavate trenches to run negative cables to abovegrade piping, and excavate trenches to run AC cables to existing power locations within the facilities. What is our grading plan? No grading plan. The excavation completed here will be regraded to the same elevation as previous to excavation. What will the backfill be like? Backfill will utilize a combination of the excavated soil and fine soil. Site will be restabilized and vegetated/seeded as close to original state as reasonably possible. What drainage plans do we have? Due to size and scope, no drainage plan is designed. Excavation activities will utilize industry best practices with regards to silt fences/straw swaddles to prevent erosion and dispersion offsite. Add anything you can that’s pertinent and easily added. N/A. What is the total Earthwork? Square footage & Cubic Yards? 3,400 square feet and 777 cubic yards. 2.3 Cottonwood Compressor Station Overview: Installing new conventional ground bed. Will excavate 16 separate holes to install anodes at various locations in the facility, excavate trenches to tie anodes together, excavate trenches to run negative cables to abovegrade piping, and excavate trenches to run AC cables to existing power locations within the facilities. What is our grading plan? No grading plan. The excavation completed here will be regraded to the same elevation as previous to excavation. What will the backfill be like? Backfill will utilize a combination of the excavated soil and fine soil. Site will be restabilized and vegetated/seeded as close to original state as reasonably possible. What drainage plans do we have? Due to size and scope, no drainage plan is designed. Excavation activities will utilize industry best practices with regards to silt fences/straw swaddles to prevent erosion and dispersion offsite. Add anything you can that’s pertinent and easily added. N/A. What is the total Earthwork? Square footage & Cubic Yards? 2,270 square feet and 521 cubic yards. 2.4 Starkey Compressor Station Overview: Installing new conventional ground bed. Will excavate 16 separate holes to install anodes at various locations in the facility, excavate trenches to tie anodes together, excavate trenches to run negative cables to abovegrade piping, and excavate trenches to run AC cables to existing power locations within the facilities. What is our grading plan? No grading plan. The excavation completed here will be regraded to the same elevation as previous to excavation. What will the backfill be like? Backfill will utilize a combination of the excavated soil and fine soil. Site will be restabilized and vegetated/seeded as close to original state as reasonably possible. What drainage plans do we have? Due to size and scope, no drainage plan is designed. Excavation activities will utilize industry best practices with regards to silt fences/straw swaddles to prevent erosion and dispersion offsite. Add anything you can that’s pertinent and easily added. N/A. What is the total Earthwork? Square footage & Cubic Yards? 2,270 square feet and 521 cubic yards.