Industry:
Oil & Gas
CMAA Classification:
Class D Service
Product Manufacturer:
G.W. Becker, Inc.
Project Description:
G.W. Becker, Inc. supplied one (1) new hazardous location, top running, double girder bridge crane with an electric wire rope hoist. The crane is designed with 3-motion operation and built in accordance with current industry standards, including CMAA, ANSI/ASME, OSHA, and NEC. It is equipped with spark resistant and intrinsically safe features for Class I, Groups C and D, Division 2 hazardous locations.
Project Specifications
Crane Type: Hazardous Location Top Running Double Girder Bridge Crane
Capacity: 40 Ton (80,000 lbs.)
Span: 60’-10”
Lift: 30’-0” (34’-8” available)
Duty Cycle: CMAA Class D service (H4 duty hoist)
Voltage: 460 V-3 Ph-60 Hz.
Operation: Radio control with handheld transmitter, two-step pushbuttons, On/Horn and Off/E-Stop
Service Conditions: Indoors, 41°F to 104°F ambient temperature
Special Features
This crane was engineered with heavy-duty and hazardous environment requirements in mind, including spark resistance and weather resistance for added safety and reliability.
Mechanical & Electrical Features include:
- Bogie-type end trucks with rotating axles and bronze wheels
- Six-part double reeving with ø 13 mm wire rope
- Variable frequency drives (VFD) for smooth bridge, trolley, and hoist motion
- NEMA 7 enclosures for bridge, hoist, and trolley controls
- Intrinsically safe relays and low-voltage control circuit
- Continuous overload protection
- Full-length footwalk with decking, handrail, toe board, and self-closing gate
- Energy absorbing rubber bumpers on bridge and trolley
- Spark Resistant Components include:
- Bronze bridge and trolley wheels
- Bronze sheaves
- Bronze coated hook and hook block
- Stainless steel trolley festoon carriers with bronze wheels
- Spark resistant flat cable festoon system
- Weather Resistant Features include:
- NEMA 4x/7 control enclosures
- Heaters in motors
- Control enclosure heater with thermostat
This hazardous location crane solution provides safe and efficient lifting in environments where explosive gases, vapors, or combustible dusts are present, ensuring compliance with industry standards while protecting operators and equipment.