Columbia Delivers HAZLOC-Rated Winch for Pig Trap

Columbia AC Winch WN15000 used for PIG

Application: Winch with HAZLOC-rated electrical components slides out Pig Trap
Location: Collins, MS
Customer: Colonial Pipeline Company
Hoist Model: Columbia AC Electric WN15000-4A17-L-01

  • Line Pull:  15,000 pounds on the first layer
  • Line Speed: 21 feet per minute on the first layer

Power Source:  460 VAC 3Ø 60 Hertz
Special Features:

  • Class I Div 1 Group D rated 5.0 HP brakemotor
  • Class I Div 1 Group D rated control enclosure with current sensing relay


Colonial Pipeline’s infrastructure forms a critical backbone for fuel transportation across the Eastern U.S. To maintain safety and integrity, the company relies on pipeline inspection gauges (PIGs) to analyze pipe condition. These PIGs are launched and received through specialized access points known as pig traps.

Constructing a new trap, Colonial project manager Rhyan Sparkman sought a hazardous location rated winch to reliably open and close the 30-foot long, 12,000 pound trap door. He contacted Allied Power Products to find a robust custom solution suited to this demanding role.

Our team took a consultative approach, assessing trap design details and hazardous environment realities. After consideration, we recommended outfitting our 15,000 lb capacity Columbia WN Series winch to achieve intrinsically safe Division 1 operation.

The winch was equipped with spark resistant stainless steel wiring to limit ignition risks from rope wear. Class I Division 1 enclosures ensure electrical components are fully sealed for safe, reliable function. We also integrated a current sensing relay to prevent potential overtravel accidents when closing the massive door.

Despite relatively low duty cycle estimates, our engineers opted for overdesign. Columbia’s flagship winches provide unparalleled durability and service life, representing sensible long term investments. This reflects our mission to deliver value through purpose-built solutions crafted to support critical infrastructure.

Please contact us about additional customization or hazardous environment optimization for your winch application needs. Our team is ready to help assess options to facilitate lasting safety.

Allied Power Products, Inc. has specialized in providing winches, hoists, capstans, and cranes to meet our customers’ specific application requirements for more than 30 years.


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