Painting fume control

A 13.9 Electrostatic technique of powder painting 13/409 A13.I0 Effluent treatment and fume control 13/4l2... 

Physical hazards from mechanical equipment must also be locked out to ensure worker safety. Valve pits or manholes that may be flooded with water or other fluids must also be rendered safe prior to entry. If work is performed on an elevated storage tank, additional fall-protection procedures need to be followed. When workers are exposed to air contaminants such as sandblasting materials, welding fumes, or paint solvents, additional air monitoring and explosive hazards controls need to be taken. 

It is mandatory for a good paint shop to control polluting fumes and treat wastewater before it is discharged into the drains. To do this, effluent treatment processes must be carried out to prevent pollution of the environment and contamination of ponds, rivers or farmlands, into which the wastewater is discharged. 

Spray cleaning of parts with solvent, using an airless gun similar to a paint sprayer, is also practiced. Spray cleaning is typically performed in a ventilated fume hood so as to protect the worker from solvent fumes. In addition to the fume hood, an emissions control system is often required. Many local air quality agencies prohibit the spray cleaning of parts with solvent or require an appropriate emission control system to be in place. 

Many industrial processes require accurate environmental control. Examples include chemical reactions and processes that are affected by atmospheric conditions biochemical reactions quality, uniformity, and standardization of certain products factors such as rate of crystallization and size of crystals product moisture content or regain deliquescence, lumping, and caking of hygroscopic materials expansion and contraction of macliines and products physical, chemical, and biological cleanliness effects of static electricity odors and fumes conditions in storage and packaging quality of painted and lacquered finishes simulation of stratosphere or space conditions and productivity and comf ort of workers. Controlled atmospheric conditions are... 

Toxicology LD50 (IP, mouse) 552 mg/kg PEL TWA 5 mg/m TSCA listed Hazardous Decomp. Prods. Heated to decomp., emits acrid smoke and irritating fumes Uses In dental cements phosphors flame retardant for plastics rust-inhibitive pigment for primer paints corrosion and scale control for potable water treatment stabilizer in food pkg. infood-pkg. adhesives Regulatory FDA 21CFR 175.105, 181.29(50 ppm max. in finished food)... 

To minimise possible acute or chronic health effects from exposure to asphalt, asphalt fumes and vapours and asphalt-based paints, NIOSH recommends an exposure limit of 5 mg/m during any 15 min period and implementation of the following practices (a) prevent thermal exposure, (b) keep the application temperature of heated asphalt as low as possible, (c) use engineering controls and good work practices at all work sites to minimise worker exposure to asphalt fumes and asphalt-based paint aerosols and (d) use appropriate respiratory protection (NIOSH 2000). 

Fumed silica is widely used in industry as an efficient thickening agent providing shear thinning and thixotropy to liquid media like adhesives, resins, paints, and inks. Various parameters control the rheological performance of fumed silica ... 

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