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Safety and Protection to be Considered in Laboratory Construction

Jun 07, 2018

General provisions:


1 Scientific experiments The design of buildings must implement the current national laws, regulations and regulations on safety, health, radiation protection and environmental protection.

2 The doors and windows of the bottom floor of scientific experimental buildings should adopt security and anti-theft measures.

(3) Anti-theft doors, anti-theft windows, and alarm devices shall be provided in places where radioactive materials are stored.

(4) Warning devices or signs shall be placed on the obvious areas or on the doors of the experimental area or room where restricted personnel enter. In addition to warning devices or signs, the storage room of radioactive sources should also be equipped with facilities such as fire prevention, anti-theft and alarm devices.


Fire Prevention and Evacuation:


The fire protection design of scientific experimental buildings must comply with the following national regulations in addition to the existing fire protection codes for architectural design:

1 The partition walls of laboratories with valuable equipment shall use non-combustion bodies with a fire-resistance limit of not less than 1 h.

2 The safety exit of a general-purpose laboratory consisting of more than one standard unit should not be less than two.

3 The doors of laboratories that are prone to accidents such as fire, explosion, or chemical damage should open to the evacuation direction.

Chemical hazards:


(1) Fume hoods should be installed in laboratories that carry out experimental work on harmful gases, vapors, odors, smoke, and volatile substances.

2 The laboratory containing mercury should be provided with a special fume hood. The ground, floor, wall surface, ceiling, laboratory bench, doors, windows, etc. of such laboratories shall be made of materials that are not cracked, non-adsorbing or leaking, and shall be provided with mercury collecting tanks, channels, and bottles. . Floors and floors should have slopes of not less than 1%, and trenches and floor drains should have the function of collecting mercury that is lost in the air. Vents should be provided in the lower part of the room.

3 For laboratories that frequently use strong acids, alkalis, and chemical burn hazards, emergency showers and emergency eye washers should be installed near the exit.

4 Laboratories that must store a small amount of chemical dangerous goods for daily use should be provided with special chemical storage cabinets or fume hoods that are continuously ventilated for 24 hours.

5 The treatment and disposal of waste gas, liquid waste and solid waste in the radioisotope laboratory shall comply with the relevant national regulations.


Biohazard:


1 According to the 4 classifications of the current harmful microorganisms and viruses (see Appendix A), the Biohazard Prevention Laboratory is divided into Biosafety Level 4 Laboratories, Biosafety Level 3 Laboratories, Biosafety Level 2 Laboratories, and Biosafety Level 1 laboratory.

2 Biosafety Level 4 Laboratory

Level 4 laboratories are used for highly hazardous microorganisms and virus experiments and should be designed as separate buildings. When it is required to be installed in the same building as other experimental rooms, it must be clearly partitioned and isolated.

Laboratory washbasins must be provided at the entrance and exit of the laboratory and photoelectric switch should be used.

The hazard signs, safety notices, and status lights must be set at the entrance to the experimental area.

The negative pressure must be maintained in the laboratory, and the outdoor exhaust must be specially filtered.

Staff must be provided with the following procedures: transitional family room, shower, lab service room, and laboratory. From the transition to the laboratory should maintain a pressure drop of 20 ~ 30Pa in descending order.

Must provide disinfection facilities for access to experimental materials and equipment. The

The indoor must be equipped with Class II and Class III biological safety cabinets and two-door high-pressure steam sterilization pots.

Indoors should reduce prominent architectural components and exposed pipelines.

The floors, walls, ceilings, observation windows, and pipe-through holes of the room must be strictly sealed.

Indoor fixed test benches and other fixed facilities should not be used.

The room must not have outside windows.