• Science@Wipp
  • Underground Lab
  • Waste Hoist
  • Double Beta Decay
  • Dark Matter
  • Biology
  • Repository Science
  • Renewable Energy
  •  

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    Primary Hoist: 45-ton Rope-Guide Friction Hoist

    Completely enclosed (for contamination control), the waste hoist at WIPP is a modern friction hoist with rope guides. With a 45-ton capacity, it was the largest friction hoist in the world when it was built in 1986.

    Largest friction hoist in the world when it was built in 1985

    • Hoist deck footprint:
      approximately 3m wide x 5m long
    • Hoist deck height:
      approximately 3m wide x 7m high
    • Access height to the waste hoist deck is limited by a 4 m high door
    • Nominal configuration is 2-cage (over/under), with bottom (equipment) cage (approximately 5m interior height)

    The photo, at left, shows the high-bay doors at the top collar of the waste hoist shaft.

    Depending on actual envelope dimensions and rigging limitations, taller items can be accommodated.  However, tail ropes attached to the underside of the waste conveyance preclude slinging operations for objects which are able to be passed through the doors.

    Secondary Access Shaft: Salt Shaft Conveyance

    The salt hoist transfers personnel and equipment at about 800 fpm.  Salt is skipped out of the mine at almost 1600 fpm.

    The secondary access shaft at WIPP is known as the salt shaft, since it is used to bring mined salt to the surface during underground excavation of new cavities.  This 8-ton direct pull hoist and wooden guides provide secondary access for personnel and equipment.
    • Hoist cage footprint: approximately 1.5m x 1.5m
    • Hoist cage height: approximately 1m x 2.5m high
    • Maximum cross section between guides: approximately 1.5m x 2.5m

    Number of trips per day varies based on material being hoisted and allowable travel speeds. Equipment downloading can be scheduled as needed with coordination.

    Note: Measurements listed on this page are approximations and should not be used for the purpose of determining specific equipment capabilities. For specific measurements, contact Roger Nelson at rnelson@wipp.ws