Archived Projects

Campus Decomissioning 

ACH Constructors is decommissioning approximately 950,000 sq. ft of  laboratory and office facilities to a hibernated state.  Activities include laboratory and equipment decontamination; laboratory  services assessment and  isolation of non essential services; turndown of mechanical, electrical, data systems, and equipment; modifications to interfaces to maintain fire alarm, security, and sprinkler systems; and coordination with owner to remove necessary equipment and supplies from the facility.

Pharmaceutical Lab Renovations 

ACH Constructors is providing general contracting services for renovation of existing laboratory space. This includes mechanical duct work and exhaust fan installation requiring roof work and crane lift, fire alarm and fire protection additions, plumbing, electrical and data, new laboratory casework and fume hood installations, and architectural renovations.

Pharmaceutical Washroom Additions 

ACH recently renovated three pharmaceutical suites into wash rooms suites. The renovation included new floor drains, additional exhaust systems, stainless sinks, eyewashes, shelving and cabinets, utility station upgrades for compressed air and vacuum, epoxy flooring, and rytec high speed rollup doors. These modifications enhanced productivity in the suites and provided expanded functionality for the staff.

Process Utility Skid 

ACH is working with Mechanical Specialty Contractors for a client in RTP to retrofit a process skid to work in an existing process suite.  Utility services needed to be rerouted and quick connect service locations set up to easily hook up and disconnect by users.

Duke Triangle Universities Nuclear Laboratories

ACH Constructors provided general contracting services for renovations and upgrades to the accelerator equipment cooling loop at the TUNL. The cooling loop was converted from a local cooling tower setup to the campus chilled water loop. Additions included new pumps, heat exchanger, electrical power upgrades, controls automation, and piping modifications and additions. New piping and components were installed and staged while the TUNL was operational. A systems shutdown and tie-in changeover was coordinated with TUNL staff to minimize downtime to the facility

Duke University NMR Work

ACH Constructors provided general contracting services to support installation of a new NMR unit in the French Family Sciences Center. A dedicated cooling loop including over 1000 ft of chilled water piping, heat exchanger, and control system was installed to support the NMR unit. Electrical power additions were also required.

Bry-air Desiccant Humidifier

Removal and replacement of a Bry-Air desiccant dehumidifier that services a pilot plant processing suite for pharmaceutical product development. Work was done on a shutdown schedule to minimize downtime for suite production. Work included controls integration, HVAC, electrical, and mechanical piping systems.

EV Charging Stations

 ACH installed a series of 220V Charge Point charging station for Electric Vehicles(EV) in RTP, NC at  a local clients campus.  The stations are series  CT4000 quick charge versions that include local network support, internal modem, remote management, and permission control, via a Charge Point RFID card.  Stations will fully charge the average EV vehicle in 4 hours. Charge Point has an application that can be linked to a users cell phone to let them review charge time, power used, and fossil fuel saved, among other available data. 

Buss Duct Project 

ACH worked with an RTP client to replace  a 20 year old elevated  5KV enclosed  bussduct for their central utility plant.  The existing bussduct was deteriorated and there were concerns about the joints leaking.   The new coated rigid conduit raceway was installed on galvanized columns parallel to the existing bussduct.  A coordinated effort between  ACH, JCElectric, Duke Energy, Eaton, and Johnson Controls during a 24 hour shutdown successfully modified the motor control center and completed the buss duct  and conductors to  the modified Duke Energy transformer station.  Diesel generators kept power available to keep key system operational during the shutdown.

Automatic Doser Equipment

ACH worked with a local pharmaceutical client to relocate set up and start up a large scale dosing equipment machine that automates manual repetitive processes in the laboratory. The system utilizes house nitrogen and instrument air to control the operation of the methanol control valve and storage tank.

Switchgear Replacement Project 

ACH and JC Electric executed a 22 hour shut down  in November to replace an existing main and emergency switchboard for a client in RTP. The work required following a detailed script plan, and n+1 generator to maintain building systems power. Duke Energy was involved to isolate and re-energize the main transformer to the building for safety.

Clean Room Rennovation Cytonet, LLC.

ACH performed a clean room renovation for Cytonet, LLC.  Approximately 1500 sq. ft of grade d,c and b space was renovated by ACH.  Construction wais expedited to minimize downtime of existing facility and meet production requirements

Starbucks Kiosk Rennovation 

ACH worked on renovations to a starbucks kiosk that included new casework, fixtures, shelving,  additional power for services, as well as lighting. Work was expedited to minimize downtime and affect on productivity.

Boiler Rennovations

ACH is working with a local RTP client to replace 4 heating  hot water boilers in two buildings over the summer.  Work involved natural gas piping and isolation, demolition and removal, new boiler installs, tanks, pumps and associated piping work.

Cooling Towers I & II 

Installation included demolition of six existing cooling towers and reinstall of seven new cooling towers in two phases. Removal of existing foundation and installation of new foundations included site work and grading, new condenser water piping and associated structural pipe bridge with foundation. All new control valves, controls, wiring, and pneumatics were installed. All new electrical service to cooling tower fans, VFD’s, and sump heaters were also installed. Lighting protection and all associated grounding were used. All startup and testing of systems were performed for operational readiness.

North Complex Groundwater Remediation

This project included installation of a groundwater remediation system with extensive controls integration for operation of the groundwater extraction and injection wells, including piping, pumps, valves, solenoids, tanks and filters. Custom control panels were developed to monitor and operate the extraction and injection processes. A master control panel was created to monitor status of the system from each delivery skid.  Project duration was 1 year.

Installation included demolition of six existing cooling towers and reinstall of seven new cooling towers in two phases. Removal of existing foundation and installation of new foundations included site work and grading, new condenser water piping and associated structural pipe bridge with foundation. All new control valves, controls, wiring, and pneumatics were installed. All new electrical service to cooling tower fans, VFD’s, and sump heaters were also installed. Lighting protection and all associated grounding were used. All startup and testing of systems were performed for operational readiness.