Layout of water, gas and electricity in biosafety laboratory

Layout of water, gas and electricity in biosafety laboratory

1. Water supply layout of biosafety laboratory

Animal Biosafety Level 3 (ABSL-3) and Biosafety Level 4 (BSL-

4/ABSL-4) The water supply is supplied by a specially designed high-level cut-off water tank to avoid direct connection with the city's water network; in order to prevent...

Text label: biological laboratory layout, biological safety laboratory layout

Water, Gas, Electricity Layout of Biosafety

1. Water supply layout of biosafety laboratory

Animal Level 3 Biosafety (ABSL-

3) and Level 4 Biosafety (BSL-

4/ABSL-4) The water supply is supplied by a specially designed high-level cut-off water tank to avoid direct connection with the city's water network; in order to prevent backflow, a non-return is set on the water supply pipe of the biological laboratory system and near the faucet valve; a water level alarm should be installed on the high-level water tank, and there should be no water in the water supply pipeline.

The water pipes of the biological laboratory system are painted with eye-catching colors such as yellow to distinguish them from the water pipes of the general system, and a sign of 'No Drinking' is hung. PVC-lined steel pipes for water supply pipes and copper pipes for hot water pipes. A hand-washing device should be set up at the exit of the biosafety laboratory with a non-manual switch. Level 2 ~ Level 4 biosafety laboratories should be equipped with emergency eye flushing devices. When there are irritating substances in the first-level biosafety laboratory, eyewash devices should be installed within 30m; high-pressure washing water guns should be equipped for large animal laboratories.

2. Drainage layout of biosafety laboratory

The drainage system of the general area and the polluted area should be separated. The biological laboratory, especially the fourth-level biological laboratory, the drainage system of heat sterilization (120℃, 30min) and the drainage system of chlorine sterilization should also be separated.

Level 3 and 4 biosafety laboratories shall not have floor drains except for shower rooms, animal rooms, dissection rooms, and corridors where large animals stay.

Drainage from the protection zone of the tertiary and tertiary biosafety laboratory should be collected through a special pipeline and sterilized in a separate device.

High-efficiency filters should be installed at the vent pipe outlet of the drainage system of the third- and fourth-stage biosafety laboratory, and two-stage high-efficiency filters should be installed in the fourth and third animal levels.

The drainage pipes of the third- and fourth-level biosafety laboratories should be clearly installed, and the fourth-level drainage pipelines should be equipped with transparent casings.

If the drainage volume is very small, the drainage can be discharged into the container without a drainage pipe, and then sent out after being sterilized by an autoclave.

3. Gas supply in biosafety laboratory

The special gas in the laboratory is supplied by high-pressure gas cylinders. The gas cylinders are located outside the laboratory and are transported to various outlets through pipes. The gas cylinders must not enter the laboratory. Zhongjing Global Purification can provide consulting, planning, design, construction, installation and transformation of laboratories and clean rooms and other supporting services.

The positive pressure suit biosafety laboratory should also be equipped with emergency support gas tanks.

The vacuum system uses individual small vacuum pumps instead of the public pipe network. When the centralized system is used as a last resort, filters are installed near each use site and can be replaced, and the exhaust of the vacuum system can be directly vented to the atmosphere.

4. Electrical setup of biosafety pharma machinery

The electricity load of the second-level biological laboratory should not be lower than that of the second-level biological laboratory. The control of power equipment shall be both automatic and manual. Critical loads press 24

h Full operational design. The illuminance of the biological safety clean room is higher than that of the general clean room, and waterproof sockets and lamps should be used. The lamps should be replaced in the technical interlayer outside the room, and emergency lighting should be provided for no less than 30 minutes.

For a Class 4 biosafety clean room, in addition to internal intercommunication telephones, there should also be playback equipment. The intercom system should be designed such that inward calls are controlled and outgoing calls are uncontrolled.

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