REMOVAL OF SAND FROM DRYDOCKS
Abstract
Sand left by sandblasting operations on graving dock floors is sucked into dewatering pumps and causes damage to valuable machinery. This survey was made to determine the most effective and economical method for removing sand prior to dewatering. Low-profile equipment can remove spent sand from unobstructed dock floors. In areas with unrestricted ceiling a scoop loader can remove the accumulated sand for placement into containers. A low-profile tractor is adequate for movement of sand in open spaces of the dock. But when a vessel is mounted on blocks, the working area and height near the blocks prevents the use of large-size and high-profile equipment. The maximum elevation above the dock floor of either the operator's head or the equipment should be approximately 48 in. Spent sand must be removed manually from dock floors where plinths, adjustable chain-operated bilge blocks, steps or altar sides, numerous drains, and other obstructions preclude the use of mechanical equipment. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 20, 1962
- Accession Number
- AD0284310
Entities
People
- C.a. Dittus
- J.j. Doman
Organizations
- Naval Facilities Engineering Service Center