East Kentucky Power Plant Demolition

Spurlock Unit No. 1 Backend Equipment

Work Performed: demolition, environmental decommissioning, asbestos abatement, equipment recycling, asset recovery

Project Description

This project consisted of the demolition of the structure known as Unit No. 1 Boiler Outlet of the East Kentucky Power Cooperative H.L. Spurlock Power Station located at 1301 West 2nd Street in Maysville, Kentucky. The structure was multi leveled to a height of 150’-0” above grade, totaling 180,000 sq. ft. and was constructed of structural steel framing, supporting various pieces of equipment.

Project Details

East Kentucky Power Cooperative contracted North American Dismantling Corp. (NADC) to complete the removal of the structure down to the existing slab including environmental decommissioning and asbestos abatement. The demolition included the removal and/or recycling as scrap; the steel framing, all equipment and machinery contained within and all mechanical, electrical and ancillary equipment including ductwork, fans, piping, conduit, steel guard posts and railings. Major equipment included but was not limited to:

  • Electrostatic Precipitator (1) including transformer/rectifiers and controls. (The control enclosure located in the plant is not included);
  • Induced Draft Fans (2) including the fan, 2-speed motor, oil filled speed changer, and lube oil units (4000 volt, 3500/200 Hp, 888/710 RPM);
  • Forced Draft Fans (2) including the fan, 2-speed motor, oil filled speed changer, and lube oil units (400 volt, 1500/100 Hp, 710/590 RPM);
  • Rothemule Regenerative Air Heaters (2);
  • Babcock & Wilcox Tubular Air Heater (1);
  • Sets of Steam Air Heating Coils (Secondary air) (2);
  • Miscellaneous duct sections stored in the lay down area.

This equipment had been in use for approximately 26 years on the flue gas outlet of a coal fire utility boiler firing eastern bituminous coal.

In addition to removing all equipment mentioned above, NADC removed a No. 2 oil fired Combustion Engineering package boiler rated at 110,000 Lb/Hr at 25 PSIG and 455 Deg. F steam outlet temperature, including all auxiliaries such as misc. pumps, fan, and condensate DA/storage tank are to be removed as well.
An ash piping bridge on the west side of the precipitator was required to remain. It was supported by a cantilever off the precipitator support steel. NADC had to modify a portion of the steel in order to adequately support the piping bridge prior to its demolition activities.

Also included as a part of its scope of work, NADC was required to salvage and save the following:

  • Primary Air Fans (2) including the fan, motor, and the lube oil unit;
  • Set of Primary Air Steam Coils (1);
  • Two (2) Bridge cranes located in the precipitator pent houses.

All environmental issues were addressed and abated by EKP prior to the start of NADC’s work. The ducts were vacuum cleaned and the regenerative air heaters were water washed to remove bulk ash by the owner prior to NADC’s work. Storm sewers and catch basins located in the vicinity of the work area were covered with visqueen or filter fabric to prevent any accidental discharge into the storm system.
Because of the potential dust, NADC maintained a misting of water on the areas of the structure being demolished. Wetting the building not only eliminates dust, it also kept the chance of any fire to an absolute minimum.

Consumers Energy Company D.E. Karn Plant

Demolition of Units 1 & 2 Primary & Secondary Existing Electrostatic Precipitators, ID Fans, Ductwork and Steel

Work Performed: power plant demolition, percipitator removal

Project Description

This project consisted of removing Units 1 & 2 Primary and Secondary Precipitators, ID Fans and all inlet/outlet ductwork located at the D.E. Karn Plant, 2742 N. Weadock Hwy in Essexville, Michigan. The structures were multi leveled to a maximum height of 125’-0” above grade, totaling 120,000 sf and was constructed of structural steel framing, supporting various pieces of equipment, hoppers, penthouses and other miscellaneous materials.

Worley Parsons contracted North American Dismantling Corp. (NADC) to complete the removal of the structures down to the existing slab including the environmental fly-ash remediation. The demolition included the removal and/or recycling as scrap material; the steel framing, all associated equipment and mechanical, electrical and ancillary equipment including ductwork, fans, piping, conduit, steel guard posts and railings. Major equipment/systems included but was not limited to:

  • Two (2) Primary Electrostatic Precipitators including transformer / rectifier enclosures and associated components;
  • Two (2) Secondary Electrostatic Precipitators including transformer / rectifier enclosures and associated components;
  • Four (4) Induced Draft Fans including the motor, oil filled speed changer and lube oil skids, skid enclosures and all accessories;
  • Flue gas ductwork running between the outlets of the secondary ESP’s and the inlets of the ID Fans including truss systems supporting ducts;
  • Fan discharge ductwork from the outlets to the ground level;
  • Wet fly ash collection systems including all piping, fittings, valves and pipeline components.

D.E. Karn Units 1 and 2 each consisted of a pulverized coal, tangentially-fired, double furnace, single reheat, balanced draft steam generator. Each unit had a gross rating of 275.MW. Unit 2 steam generator had low NOx burners that generated flue gas for the existing system. The flue gas for each unit had parallel flow paths that passed through selective catalytic reduction (SCR) system, regenerative air heaters, primary precipitators, secondary precipitators and ID fans before being discharged to the atmosphere through the chimney.

Electrostatic Precipitator Conversion

Electrostatic Precipitator Conversion to
Pulse Jet Fabric Filter (PJFF) Technology

Work Performed: dismantling, high lift and crane rigging

Project Description

This project was a fast track conversion of an existing electrostatic precipitator (ESP) to Pulse Jet Fabric Filter (PJFF) technology. Casey Industrial was PacifiCorp’s chosen design building contractor for this project. Project specs were identical for both the Hunter Power Plant Unit 2 and the Huntington Power Plant Unit 1..

Work Performed: dismantling, high lift and crane rigging
The projects took place during the Owner’s planned outage in September of 2010. Notwithstanding, North American Dismantling Corp. (NADC) worked hand in hand with Casey to develop an execution plan months in advance of the outage date.

This execution plan included Casey engineering and installing a 4600 Manitowoc ringer crane as the main hoisting device for the project. In addition, Casey assisted the Owner in planning and executing an environmental “sweep” of the ESP at the inception of the shutdown. This allowed for a fluid transfer of the precipitator to Casey and its’ subcontractors.

NADC was mobilized and ready to begin operations as was originally specified. The ringer crane was used to stage demolition equipment on the precipitator as it was turned over. Cut lines were identified and laid out to confirm as built conditions. NADC then began its dismantlement operations.

XCEL Energy East Texas Plant

Demolition & Asbestos Abatement

Work Performed: power plant demolition, asbestos abatement, scrap material processing

Project Description

This project consisted of the demolition of all structures on site with only the concrete foundations to be left in place. North American Dismantling Corp. (NADC) subcontracted a local asbestos abatement firm to perform all asbestos abatement on this project. The asbestos abatement included, but was not limited to, asbestos siding removal and transite sheeting from offices and storage areas.

All accumulated waste on the site was disposed at the approved vendor landfill. Following the asbestos abatement, NADC performed demolition on numerous buildings at the site including the maintenance shop, main plant, pole storage barn, metal storage building, brick storage building, utility storage shed, wooden fire houses, can crushing building and any equipment residing in any of the buildings listed. The buildings removed totaled approximately 200,000 sq. ft.

All scrap materials from the site were the property of NADC at the commencement of the project. It was NADC’s responsibility to take title of all equipment and structures onsite and consider all options for the removal of equipment to include scrap processing, resale, etc. NADC followed all required state and federal regulations for the removal of the facility to include waste disposal regulations for items recycled.

NADC completed this project within its specified budget and within the time specified by the owner.

 

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