The so-called P2 laboratory is simply a type of laboratory in a biosafety laboratory that reaches the P2 level, and its experimental subjects are microorganisms with moderate potential harm to humans and the environment.
There are 6 precautions for P2 laboratory decoration, including the determination of technical indicators, building structure and decoration requirements, air conditioning ventilation and purification, required process equipment, laboratory electrical settings, drainage and fire protection requirements.
1. Determination of technical indicators: The technical indicators must comply with the "Technical Specifications for Building Biosafety Laboratories", specifically, there are no requirements for cleanliness; There is no requirement for the pressure difference between adjacent and connected rooms in the outdoor direction; Small air changes can be done by opening windows for ventilation; The temperature is 18-27 ℃; The relative humidity is 30-70%; Noise ≤ 60dB (A); The low illumination is 300lx. To carry out P2 laboratory decoration, these low indicators must be met.
2. Architectural structure and decoration requirements: The door of P2 laboratory should have automatic closing function. If the laboratory area is large and the budget is sufficient, a buffer area can be set up. In order to ensure the indoor temperature and humidity indicators, it is necessary to establish a mechanical ventilation system. In addition, measures should be taken to prevent insects, mice, and other insects from entering and escaping from animals.
3. Air conditioning, ventilation, and purification: P2 laboratory should establish an air conditioning system with circulating air. If the experimental object or project involves animals, infectious materials, chemical solvents, etc., a full exhaust system must be established. The biosafety cabinet should be connected to the exhaust system, and the location of the instruments should also facilitate air circulation.
4. Process equipment to be equipped: Biosafety cabinets, mainly divided into Class I (suitable for producing microbial aerosols or splashing operations), Class II (suitable for handling sensitive materials), and Class II-B (suitable for handling chemical carcinogens, radioactive substances, and volatile solvents). Secondly, there are high-temperature and high-pressure sterilization cabinets, eye washers, emergency sprinkler devices, and ultra clean workbenches.
5. Laboratory electrical setup: It is a dedicated distribution box, and the power supply should be equipped with a leakage detection and alarm device. Secondly, the grounding system should be connected, and the grounding resistance should not exceed 1 Ω. Afterwards, there should also be a light signal display board displaying the working status and an emergency illuminated evacuation indicator sign.
6. Drainage and fire protection requirements: For P2 laboratory decoration, drainage and fire protection requirements are also important. Let's first take a look at drainage. High temperature and high pressure disinfection or chemical disinfection equipment should be installed in the laboratory. Looking at fire protection, the fire resistance rating of laboratory buildings cannot be lower than Level 2.