The International Fire Protection Association (NFPA) has established the "Standard for Fire Fighting Apparel and Related Applications", which includes the three minimum comprehensive performance standards for chemical protective clothing. The delegates agreed that in the next few years, the number and type of protective clothing standards will rapidly increase, and new standards that will continue to surge will involve protective clothing performance testing techniques and provisions to increase their overall performance;
The increase in the standard of protective clothing will also promote the development of the protective clothing industry in the following areas:
(1) Producers will test their protective clothing products according to uniform standards;
(2) It is also possible to develop and improve its products using protective clothing performance specification indicators and instructions;
(3) Users will use a common method to understand the performance characteristics of protective clothing and give fuller play to its protective role;
(4) It can also increase the end-user's trust in protective clothing products.
When choosing personal protective equipment, you must first identify three important factors:
(1) What kind of protection level is required?
(2) What kind of insulation fabric can provide the best protection?
(3) Are there protective clothing products that can be selected on the market today?
Hazardous material expert David W. Berry divided protective clothing into the following four main levels:
(1) Class D is an ordinary work clothes with little or no chemical protection;
(2) Class C garments, which are entirely coated with chemical splash protection, are equipped with a purified air respirator (which has a certain protective effect on the respiratory system, mucous membranes and skin);
(3) Class B is a chemical-resistant splash suit with overall coverage, with a positive pressure respirator (SCBA) or a vented tube for air respirator (optimum protection of the respiratory system and mucous membranes) And have a protective effect on the skin;
(4) Class A airtight protective clothing with integral overwrap, self-contained positive pressure respirator (SCBA) or exhaust air respirator for air respirator (SABA), most suitable for respiratory system, mucous membrane and skin Good protection effect.
At present, many composite and coated fabrics are used to manufacture protective clothing, including para-aramid fabrics coated with PTFE, copolymer-spunbond nonwoven fabrics, and Saranex. The coating materials used are fluorocarbons. Compounds, fluororubbers, butyl rubber and other chemicals.
Related equipment: laboratory grinding mill portable leaf area meter
Calcium carbide is an inorganic substance, the chemical formula is CaC2, the main component of calcium carbide, white crystals, industrial products are gray-black lumps, and the cross section is purple or gray. It reacts violently when encountering water, generating acetylene and releasing heat. Calcium carbide is an important basic chemical raw material, mainly used to produce acetylene gas. Also used in organic synthesis, oxyacetylene welding, etc.
Acetylene produced by the reaction of calcium carbide with water can synthesize many organic compounds such as synthetic rubber, synthetic resin, acetone, ketene, carbon black, etc.; at the same time, acetylene-oxygen flame is widely used in metal welding and cutting.
Store in a cool, dry and well-ventilated warehouse. Keep away from fire and heat sources. The relative humidity is kept below 75%. The packaging must be sealed and protected from moisture. It should be stored separately from acids and alcohols, and avoid mixed storage. The storage area should be equipped with suitable materials to contain the leakage.
Calcium Carbide,Calcium Carbide 50-80mm,Calcium Carbide 100kg Drum,Calcium Carbide Manufacturer,Calcium Carbide For Export
Henan Shunbang Chemical Industry CO.,Ltd , https://www.spvcresin.com