Fort Greely team builds mobile ‘shop-in-a-box’ for Arctic repairs
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DVIDS - GeorgiaThe Logistics Readiness Center Greely Maintenance Division faced two persistent challenges. Some of the installation’s largest engineering assets cannot fit inside its aging maintenance bays without substantial disassembly, and the installation lacks organic heavy-transport equipment to recover disabled machinery from remote work sites.
The division responded by designing and fabricating a mobile, multifunctional field-repair trailer that brings essential shop capabilities directly to the point of failure.
“The goal was to create a single, mobile ‘shop-in-a-box’ that could deliver welding, cutting, compressed air, generator power and Arctic-capable heat directly to the point of failure,” said Christopher Mancuso, maintenance and transportation supervisor at LRC Greely.
A problem exposed by extreme cold
The need became clear last winter when a D6 dozer failed at the Fort Greely landfill in temperatures near 30 below zero. A mechanic responding to the breakdown also struggled with the division’s 16-year-old Herman Nelson heater, which had developed engine, burn-chamber and fuel-pump problems.
“The mechanic could not stay warm enough to work effectively while trying to fix the heater itself,” Mancuso said. “Once the heater was running, it could only warm either the mechanic or the dozer engine - not both.”
Welding, compressed air, cutting equipment and generator power would have required additional vehicles, equipment and trips to the remote site.
The manufacturer considered the aging heater obsolete, and the estimated cost of a replacement exceeded $50,000. A new heater would have restored a source of heat but would not have addressed the broader need for mobile welding, cutting, electrical power and compressed air.
“This project demonstrates what our workforce can accomplish when employees are empowered to solve operational problems,” said Maj. Connor M. Halliday, executive officer of Army Field Support Battalion-Alaska. “The team did more than replace an obsolete heater. They developed a safe, sustainable and cost-effective capability tailored to Fort Greely’s mission and environment.”
Multiple capabilities on one platform
Brandon Ball, a metal mechanic with LRC Greely, led the platform’s design and fabrication. The team based its approach on six principles: simplicity, modularity, practicality, safety, local parts availability and multifunctionality.
The platform includes a Miller Trailblazer 330 Air Pak, a 500,000-British-thermal-unit-per-hour indirect-fired heater with two 50-foot ducts, an oxygen-acetylene cutting and welding system, secure tool storage and a roadworthy trailer chassis.
The Miller system provides metal inert gas and tungsten inert gas welding, compressed air and 13 kilowatts of generator power. The generator can charge equipment batteries and provide power for tools and high-intensity lights during Alaska’s dark winter months.
The compressor operates pneumatic tools and allows maintainers to service heavy-equipment tires in the field. That capability can prevent additional damage because moving machinery with an underinflated tire or a tire that has slipped off its wheel rim can destroy the sidewall.
“In extreme cold, tires lose air pressure rapidly,” Mancuso said. “Having compressed air on-site allows us to top them off before they go flat, preventing additional failures and reducing the risk of sidewall damage.”
The heater delivers two streams of indirect forced-air heat, allowing maintainers to warm personnel and equipment simultaneously. Because it does not direct an open flame into the work area, the system can also support sensitive operations, including thawing frozen valves in the installation’s fuel distribution yard.
Maintainers can use the heater to thaw frozen trailer air brakes and clear snow and ice from engine bays and battery compartments without exposing wiring and electrical components to direct flame.
Returning equipment to service
The trailer has already supported repairs to oversized engineering equipment.
At the landfill, maintainers hard-surfaced and replaced rock-tooth pins on an excavator bucket. Before the trailer was available, the bucket would have been removed and transported about 4 miles to the shop. Alternatively, the machine would have required substantial disassembly to fit inside a maintenance bay.
The trailer also supported repairs to a D7 dozer in the gravel pit after its push-arm pivot joint failed. Without the mobile capability, maintainers would have removed the blade and both push arms and transported them to the maintenance facility. The only bay that could accommodate the blade was occupied by a disabled 140G grader, creating an additional scheduling conflict.
“In both cases, the multipurpose trailer allowed us to complete the weld repairs on-site with the equipment fully assembled,” Mancuso said. “We returned the machines to service the same day and avoided the entire disassembly, transport and bay-availability problem.”
The team built the platform for $9,930. The total included $5,500 for the previously purchased welder, compressor and generator; $3,700 for the heater; and $730 for the axle, tires and ball mount. The steel was already on hand or provided through cooperation with Fort Greely’s Directorate of Public Works.
The platform cost less than one-fifth of the estimated replacement price for the obsolete heater while adding several capabilities.
“The trailer reduces costs in more than one way,” Halliday said. “The team avoided a major replacement expense, reduced transportation demands, shortened equipment downtime and helped prevent secondary damage. That is responsible stewardship tied directly to operational readiness.”
Supporting emergency response
The platform’s potential extends beyond equipment maintenance. The Fort Greely Fire Department requested its support for natural-disaster response training and certification, including earthquake-related collapsed-building scenarios.
The trailer can deliver cutting, welding, electrical power, compressed air, lighting and heat to a remote training site or emergency scene. Its oxygen-acetylene system can cut structural steel, rebar and debris during simulated rescue operations. The welding equipment can repair training props or fabricate temporary supports, while the compressor can power pneumatic rescue tools.
The generator can provide 120- and 240-volt electricity for lighting, tools, communications and medical support equipment. The heater can help protect personnel from cold-weather injuries and keep equipment operating during extended outdoor missions.
A future multiagency or multi-installation exercise focused on collapsed structures and mass casualties could demonstrate the platform’s broader value. The current trailer is designed for paved and other improved roads, not off-road movement, but its underlying design could be adapted for other Arctic or austere locations.
“This is an example of local innovation with potential beyond Fort Greely,” Halliday said. “Installations facing extreme weather, limited transportation assets, aging facilities or fragile supply chains could apply the same principles to meet their mission requirements.”
For Fort Greely, the trailer has changed how maintainers approach remote equipment failures. Instead of waiting for recovery support or disassembling machinery to fit inside a shop, they can bring critical maintenance capabilities directly to the equipment — reducing costs, improving safety and returning assets to service faster.
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