Demolition at Xcel Energy Arapaho
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Arapahoe Decommissioning Project

SCOPE OF WORK:

  • Mobilize and demobilize labor, equipment, materials, and temporary facilities.
  • Control surface water and groundwater as necessary for the work per the SWMP.
  • Conduct thorough pre-demolition asbestos and hazardous materials surveys.
  • Furnish and install a security fence and gates as required.
  • All asbestos insulation and other materials abatement
  • Lead paint abatement as required for demolition activities
  • All plant structures demolition.
  • Outbuildings demolition including warehouses, shops, storage buildings, etc.
  • Building and equipment foundations removal, three feet below grade.
  • Circulating water tunnel removal.
  • All underground pipe larger than 4″ above ten feet below grade, electrical duct bank and cables, and other utility removals.
  • Site water well structure and piping demolition
  • Coal conveyor demolition.
  • Scrap material salvage.
  • All other chemicals, oil, etc. storage vessels shall be emptied and disposed of.
  • Environmental monitoring.
  • Removal of two (2) concrete stacks using conventional methods
  • Properly transport, store, treat, recycle, and reuse or dispose of all waste materials generated by the work.
  • Drain oil-filled equipment (No PCB’s present)
  • Removal of all universal waste (lamps, ballasts, bulbs, etc.)
  • Cleaning, decommissioning, and removal of tanks and associated appurtenances.
  • Impacted soil excavation if encountered during work activities.
  • Site cleanup & demobilization
  • Removed & crushed approximately 40,000 cubic yards of concrete.

ADDITIONAL PROJECT FEATURES:

Site: The Arapahoe site consists of 4 units. Units 1, 2, & 3 are 50 megawatts each & Unit 4 is 100 megawatts. There were 2 smokestacks, each 250′ tall. Approximately 40 outbuildings housed miscellaneous plant equipment, controls, workshops, etc.

Exterior: Available to wreck from 3 sides of the plant. Open surroundings. No major obstructions to prevent access during the course of demolition. The substation was located approximately 70′ behind the plant. NADC maintained boundaries between work areas & the active substation.

Interior: Turbines located on level 2. Condensers located at ground level. No basement. All 4 boilers were low pressure. Unites 1-3 consisted of a precipitator, boiler, & main plant section. The main plant sections were comprised of pulverizers, motors, coal hoppers and piping. The total abatement was performed throughout. Unit 4 was a baghouse, boiler, & main plant. The baghouse was added on & did not require the same amount of abatement as the precipitators. NADC made the necessary cuts and tripped the building using cables and appropriate rigging. Unit 4 Boiler was brought fully to the ground with no incidences.

SAFETY GOALS ACCOMPLISHED:

No recordable incidents by NADC. Consistently referred to as “the safest project Xcel has going” by Xcel Management Team.

 

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total demolition project.

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Praxair Carneys Point Hydrogen Plant

Demolish Praxair site to grade and all associated equipment at Praxair’s Carneys Point, NJ facility, located at DuPont.

Summary of Major Structures NADC removed:

  • Tanks and receivers
  • Electrical building
  • Air Separation Columns
  • Compressors and Turbines
  • Cooling Tower
  • Water Treatment Equipment and Building
  • Office buildings
  • Interconnecting piping, miscellaneous piping, valves, wiring, and instrumentation within site perimeter.

NADC final graded the site with 21AA.

SAFETY GOALS ACCOMPLISHED:
NADC completed this project utilizing a full-time safety Engineer whose role and responsibilities included working with NADC and our subcontractors to provide safety oversight on all work tasks associated with this project.

Praxair Carney’s Point Demolition Project completed with:

  • Zero (0) damage to adjacent buildings or property.
  • Zero (0) Near miss incidents related to NADC personal, County or subcontractors.
  • Zero (0) recordable injuries
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Las Vegas Club Demolition

This project included complete removal of all structures to the back of curbs surrounded by Fremont, 1st, Ogden, and Main Streets. All structures were removed completely to their foundations and the North Tower basement was backfilled with crushed concrete from the demolition and compacted to 98% of proctor.

The first structures to be removed were the lower one and two-story structures including Granite Gaming, Mermaids, Golden Goose/Glitter Gulch, the Power House, and Low Roof Annex sections of the Towers. The Power House and Mermaids had basements. Next, the casinos were taken down. The old casino section had a basement as well and while backfill was not required, we graded these areas for easy movement around the site. We needed to build a workbench for the high reach equipment to access the towers, so the concrete parking structure came next. As the structure came down, the materials were segregated and sized for use in constructing the workbench.

The concrete south tower was demolished and the materials were segregated and sized to make a 35′ high workbench for accessing the north tower. This structure was a steel-framed, staggered truss system that allowed 80′ spans column to column in the N-S axis. The tower was 80′ across, 145′ long and 200′ in elevation. The high reach equipment began by removing the roof, penthouse, and four stories of floors between the column lines. Once exposed, a crane was used with a man basket to carry workers to planned elevations for torch cutting and felling. This process continued from East to West, bay by bay, until the stairwell at the West end was reached. The West end was felled in four separate felling events utilizing torch cuts and pull cables.

SAFETY GOALS ACCOMPLISHED: This project was completed without injury.

SPECIAL ACHIEVEMENTS: The North Tower with its steel frame and staggered truss system was a special challenge. the work plan was carried out flawlessly and safely.

ADDITIONAL COMMENTS: Dust control was a very important part of our work in Las Vegas due to being surrounded on all sides by a bustling crowd. The Clark County Department of Air Quality visited the project on several occasions. They were always complimentary of our efforts to control dust and did not issue a single warning or citation.

 

Contact us for more detailed information on your
total demolition project.

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Salt Conveyor and Enclosure Demolition

The project involved the removal of old salt conveyors at a Cargill salt plant in Hersey, Michigan. The conveyors carried bags of salt overhead from the salt plant to an igloo type storage structure. The bags were then lowered down from an opening in the roof of the igloo to the floor of the igloo. Once inside the igloo the salt bags were loaded onto pallets, strapped down and stacked for eventual loading onto flatbed trailers for delivery to customers.

NADC’s portion of the project involved removing the salt conveyor and salt conveyor enclosure from the slat plant to the igloo. After completing an engineered lift plan seven picks were made including the salt conveyor/conveyor enclosure (2 picks), conveyor support legs (2 picks), steel house structure on top of the igloo (2 picks) and a small section of conveyor inside the opening to the salt plant (1 pick). Once the picks were complete the conveyors and other steel structures were cut up with a shear for recycling. The concrete piers under the conveyor’s legs were hammered down to grade with a concrete hammer on a NADC Bobcat. All the items to be picked were pre-cut by men in manlifts using torches. Once the crane was connected to each section the balance of the steel was cut to allow the crane to lower the pieces to the ground for further processing. The job was completed in six days.

 

Contact us for more detailed information on your
total demolition project.

National Grid Far Rockaway Power Plant Environmental Demolition
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Far Rockaway Power Plant

The National Grid Far Rockaway Power Plant is a 100 megawatt, natural gas fired steam electric generating station. The station was originally commissioned in 1954 as a coal fired station and was converted to coal/fuel oil in 1966. Since 1994 the Far Rockaway station has utilized natural gas exclusively. The station was taken out of service in June of 2012 and in the late fall of 2012 North American dismantling was contracted to provide for the complete abatement and demolition of the power station.

Major Structures that were abated and dismantled include:

  • Unit #4 including the boiler house and turbine hall.
  • House boiler building.
  • Service building.
  • Circulating Water Intake Screen House.
  • Chlorinator House.
  • Fuel oil storage tanks including the 2,000,000 gallon Main Oil Tank and the 100,000 gallon Day oil tank, as well as, all ancillary underground and above ground piping and appurtenances.
  • Fuel Oil Transfer House.
  • Storage Building
  • Water Tank and Pump House
  • Fire Protection Building
  • Ash Silo Building
  • Continuous Emissions Monitoring Building
  • Coal Handling Structures
  • Transformers and Associated Overhead Transmission Lines
  • Circulating Water Intake and Discharge Tunnels
  • Barge Unloading Station
  • Groundwater Monitoring Wells
  • Permitted Production Water Wells.

Upon contract award NADC initiated preliminary project mobilization activities including permit acquisition. Detailed work plans and applications were filed with The City of New York Department of Buildings, Fire Department New York (FDNY), The City of New York Department of Environmental Control and The State of New York Department of Environmental Quality.

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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.

Emergency response for tornado damage
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Tornado Emergency Response

GM Truck Group

Oklahoma City Assembly Plant Tornado Damage

Work Performed: emergency response, dismantling, excavation, reconstruction

Project Description

On Thursday May 8, 2003 at approximately 5:30 pm, a tornado touched down at the General Motors Oklahoma City Assembly Plant in Oklahoma City, Oklahoma creating extensive damage to the Paint Shop, Body Shop, Powerhouse and completely destroying 2 cooling towers.

Project Details

At 10:00 pm on Friday May 9, 2003, one of North American Dismantling’s employees received a phone call at home from Washington Group, GM’s construction managers, requesting North American Dismantling mobilize immediately to assist in the tornado clean up.

Of the several 1st tier demolition contractors available, General Motors choose North American Dismantling. North American Dismantling dispatched its key personnel on the next available flight to OKC and joined with the command team in the afternoon of May 10, 2003 to assist in establishing a plan of attack including defining scopes of work and schedules. Within three days, North American Dismantling mobilized 36 major pieces of equipment, including hydraulic excavators, loaders, and 250 ton capacity hydraulic cranes in addition to 150 craftsmen to complete the demolition required prior to new installation.

Because of the special permitting required to transport its Caterpillar 345 Ultra High Reach Hydraulic Excavator from Lapeer, Michigan to Oklahoma on a Sunday, it was necessary to contact and receive permission from the Governors of six different States. This piece of equipment was on site within 24 hours after it was requested.

Compuware Headquarters Site Clearing
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Compuware Headquarters Site Clearing

Urban Center Site Clearing & Earthwork

Work Performed: demolition, site clearing, earthwork, excavation, brownfield

Project Description

The Compuware project consisted of the removal of approximately 400,000 cubic yards of earthwork soils and site clearing which included the demolition, excavation and removal of approximately 16,000 cubic yards of existing reinforced concrete, including foundation walls, footings, grade beam, columns, slabs and other buried debris.

Project Details

Site excavation was to the face of soldier piles in an earth retention system. Site demolition also included the removal of an abandoned Detroit Edison steam tunnel that included asbestos abatement procedures. In addition to the excavation of existing materials NADC was responsible for continual site dewatering and soil erosion control, dust control and the installation of new fire hydrants on the site.

Another hurdle to over come was the proximity of the Detroit People Mover and Sub-station to the excavation site. This required the submittal of a detailed construction and protection plan of existing structures prior to commencing of construction and excavation.

Major Pharmaceutical Facility Demolition
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Major Pharmaceutical Facility

Design/Build, Demolition
& Asbestos Abatement

Work Performed: design/build, demolition, asbestos abatement, new construction

Project Description

This project was a design/build project located in Southwest, Michigan. The original contract was for $10.2 million and consisted of four elements including Design Engineering, Demolition, Asbestos Abatement and New Construction. The project was bid in March 2005 with the majority of the work to be completed by December 31, 2005.

Project Details

The demolition portion of the contract consisted of the demolition and total removal of approximately 800,000 square feet of office and lab space requiring a number of different demolition methods. Building 25, a fifteen-story concrete Albert Kahn building, was removed with a ball and crane in conjunction with our hi-reach excavators. Building 209, an eight-story steel building, was tripped in sections in conjunction with our hi-reach excavators. A portion of this building had to be wrecked floor by floor as a portion of the building was to remain, including a portion of the basement under structure being removed above. We were also required to remove the top 3 floors of a nine-story building without damaging the floors to remain. The largest portion of the demolition began in July 2005 and was essentially complete in December 2005.

In addition to this work, the Owner gave us some additional work ($.8 million) to complete during this time period including the hand removal of a four-story boiler, the removal of a three-story commercial building and picking down in pieces a six-story bag house while the boiler house remained in operation. All work was completed safely and on time with no OSHA violations (3 inspections).

Asbestos abatement was started in May 2005 and completed in September 2005. The total asbestos contract totaled $2.7 million and involved three abatement contractors. At times we had more than 80 asbestos abatement contractor personnel on site daily. All work was completed safely and on time with no MIOSHA Air Quality Violations (2 inspections).

East Kentucky Power Plant Demolition
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Fraser Pulp Mill Demolition

Remediation & Asbestos Abatement

Work Performed: demolition, remediation, asbestos abatement, brownfield

Project Description

The project in Berlin, New Hampshire consists of the dismantling of an existing paper pulp mill composed of 85 separate structures totaling 600,000 square feet located over 120 acres.

The buildings included boiler houses, turbine buildings, bleach plants, offices, repair shops, co-gen plants, pump houses, dryer buildings, etc. The buildings comprise a multitude of construction including steel framing, concrete framing, wood framing, steel siding and brick,

Included in the project is the remediation of various universal wastes including CFC, mercury, solvents, black, white and green liquor.

Additionally North American Dismantling is to remediate 36 transformers (17 Non PCB and 19 PCB contaminated) and complete over $1,000,000.00 in asbestos abatement.

North American Dismantling was instrumental in the marketing and sales of over $10,000,000.00 in reusable equipment.

 

Contact us for more detailed information
on your power plant demolition project.