Under what circumstances the use of Class A protection class safety equipment
The incident has a choking or irritating toxic and hazardous substances, and the region of the staff or other related personnel life or health is immediate danger (the so-called immediate danger refers to the occurrence of irreversible and irreversible damage within 30min) Chemistry Accident center zone, or we are not aware of the toxic and hazardous substances in the event of an accident.
to determine the use of gas cylinders; body protection supplies: (haigu) fully enclosed airtight chemical protective clothing, can effectively protect the various Chemical liquids, gases and solids.
In this case we should enable Class A protection. A level of protection when the highest level of protection for our obstruction of the toxic and hazardous substances in the accident, can give us the most perfect protection. Class A protection is mainly equipped with respiratory protection supplies: positive pressure air respirator or oxygen respirator. In the use of these respiratory protection products, we should pay attention to their capacity, the user's lung capacity, activities, etc
