Silica Exposure Safety: Mini-baghouse Systems and Methods for Controlling Particulate Release from Large Sand Transfer Equipment

Description:
CDC/NIOSH scientists have developed an effective point-source control for silica-containing dusts that can be generated from machinery on sites where hydraulic fracturing is occurring. The CDC/NIOSH mini-baghouse retrofit assembly is a bolt-on control designed to contain silica-containing respirable dusts generated during refill operations of sand movers during hydraulic fracturing.

In the U.S., most new oil and gas wells are hydraulically fractured to enhance well production. Most hydraulic fracturing operations have 2-5 sand movers on-site that transfer thousands to millions of pounds of silica sand during each stage of fracturing. While a variety of passive and active controls are currently available (or have been proposed) to limit release of silica-containing dusts, the CDC/NIOSH mini-baghouse retrofit assembly was designed to fill a unique need for a control. The retrofit to equipment can be made in the field, uses existing energy inherent in the system and is relatively simple and effective. CDC/NIOSH field research has shown that risks for exposure to respirable silica arise from at least 8 points of dust generation and that a variety of controls (engineering, administrative and personal protective equipment) are needed to control exposures. Use of the mini-baghouse retrofit technology is intended to limit release of respirable silica from thief hatches on top of the sand movers, enhancing workplace health and safety.
Patent Information:
For Information, Contact:
Jeremiah Mitzelfelt
NIH Technology Transfer
301-443-8518
jeremiah.mitzelfelt@nih.gov
Inventors:
Michael Breitenstein
John Snawder
Keywords:
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AE2XXX
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apparatus
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Baghouse
CDC Docket Import
CDC Docket Import CDC Prosecuting
CONTROL
CONTROLING
Crystalline
DEVICE
DUST
Dust collector
ENVIRONMENT
ENVIRONMENTAL
environmental health
Equipment
Fracturing
HYDRAULIC
LARGE
Methods
MINE
MINER
Mini
MINING
Movers
MULTIPLE
NIOSH
NIOSH-DSHEFS
Occupational health
PARTICULATE
Release
RESPIRABLE
Respiration
Respirator
Retrofit
SAND
SILICA
SILICOSIS
SYSTEMS
VPXXXX
WCXXXX
WEXXXX
WFXXXX
WGXXXX
WMXXXX
XDXXXX
XIXXXX
YEXXXX
YFXXXX
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