Ignition sources filters

Ignition of flammable atmosphere for open filters or solvent may be above flash point with air present when cleaning or unplugging closed filters. This may necessitate tight control of ignition sources to prevent a fire/explosion. 

DISPOSAL AND STORAGE METHODS transmit used charcoal filters contaminated with carcinogen into properly labeled, sealed plastic bags collect waste liquids in secured, properly labeled containers or bottles once filled, bottles should be placed in sealed plastic bags store away from combustible materials and ignitions sources, since containers may explode in fire. 

Zone 1 consists of the Steel Confinement Boxes (SCBs) located within Zone 2A (hot cell canyon).- The SCBs are considered to be a normally contaminated area and is classified as an H7 occupancy. The SCBs are constructed of stainless steel and will contain low volumes of combustible materials and process chemicals. The combustibles primarily consist of small amounts of plastics and charcoal filter media. The plastics consist principally of syringes and bottles needed for the extraction of the Isotopes. The ignition sources within the SCBs are electrical outlets and target heaters. 

Do not eat, drink, or smoke while cleaning up. Use a self-contained respirator, a mask with filter (type A class 3) or a filtering mask (e.g., EN 405). Wear protective clothing, safety glasses, and impervious gloves (e.g., neoprene gloves). Ensure adequate ventilation. Avoid all sources of ignition, hot surfaces, and open flames (see also Section 7). 

SPILL CLEAN-UP Dry sand or earth should be spread on the leak, or spill area bulk liquid may also be absorbed with fly ash or cement powder cleanup of areas contaminated wit soot should involve dry vacuuming of surfaces with a vacuum cleaning system equipped with a high efficiency particulate (HEPA) filter after preliminary cleanup, wash surfaces with alkaline of nonionic synthetic detergents in water clean nonporous electrical and mechanical equipment with organic solvents remove all sources of ignition. 

SPILL CLEAN-UP use water spray to cool and disperse vapors high efficiency particulate arrestor or charcoal filters can be used to minimize amount of carcinogen solvent extraction, chemical destruction, or specially designed incinerators may be used to decontaminate spills isolate and remove discharged material remove all sources of ignition. 

DISPOSAL AND STORAGE METHODS systems of electrostatic precipitators, cyclones, and bag filters will collect over 99% of the black in thermal and furnace process plants after the black has been removed, large quantities of waste gases ean be atomized in a suitable combustion chamber equipped with appropriate effluent gas cleaning deviee store in a dry, well-ventilated area, away from sources of heat or ignition keep away from oxidizing agents and other incompatibles most stable when stored in closed containers at room temperature. 

Containment, venting and suppression are not usually applicable to the reactor itself, but are used to protect downstream equipment such as blenders, dryers, and filter cabinets. They are not dealt with in this guide, but information is available in References 112, 117 and 118. Reference 11 illustrates a basis of safe operation relating to a particular type of reaction (phenolic resin production). Avoidance of sources of ignition and flammable conditions is described in Reference 110 and an outline is given below. 

Sulfur in coal that is burned to generate electricity is a major source of acid rain and SO2 air pollution. In Eschka s method to measure S, coal is fused with 5 times its mass of a 2 1 (by mass) mixture of MgO and anhydrous Na2C03 at 800°C for 4 h in air. Sulfur ends up as sulfate (SO ) and sulfite (SOf") salts. The fused mass is dissolved in 6 M HCl and boiled with aqueous Br2 to oxidize S03 to SO . Excess Br2 is evaporated. The solution is adjusted to pH 3 and aqueous BaCl2 is added to precipitate BaS04, which is filtered, washed, dried by ignition, and weighed. 

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