Views: 11 Author: China xicheng Publish Time: 2021-06-03 Origin: China xicheng
Laboratory construction is a long-term development and improvement process, involving a wide range of areas, including laboratory decoration, water supply and drainage systems, electrical systems, ventilation and exhaust systems, HVAC systems, air supply systems, pure water systems, and clean experiments Laboratory, constant temperature and humidity laboratory and laboratory furniture, etc., are a complex system project, which has the characteristics of strong professional technology, high degree of mutual connection and difficulty in cross construction. So, what are the main manifestations of the necessity of laboratory construction?
Experimental decoration is different from ordinary tooling. In terms of design, material selection and construction, it is necessary to consider the requirements of waterproof, non-slip, dust-proof, anti-corrosion, anti-static, anti-interference, anti-vibration, etc., and also combine the water and electricity consumption of some precision instruments. , Gas, and the special requirements of the use environment for design and construction. At the same time, laboratory decoration and each sub-project are closely linked and closely related. The overall deployment and coordination of laboratory ventilation, air conditioning, water supply and drainage, electrical, fire protection, pure water, cleanliness and gas supply must be carried out to prevent building congestion. , Dislocation, reasonable design, construction and management, so that complex projects become orderly.
Laboratory exhaust involves the safety and comfort of experimenters, and factors such as exhaust effect, noise and energy saving must be strictly controlled. Generally, in order to avoid cross-contamination of toxic gases generated in the laboratory, the direction of the laboratory airflow should flow from the low-risk area to the high-risk area. The airflow design should flow into the laboratory from the office area, corridors, and other auxiliary areas to maintain the laboratory Appropriate negative pressure ensures that the airflow in the laboratory does not leak to the corridor. To ensure the effect, a VAV variable air volume exhaust system must be adopted. At the same time, effective variable air volume compensation measures must be taken, and proper negative pressure (5-10) Pa in the laboratory must be maintained, and the compensation air must not affect the indoor temperature. These are very different from the ordinary office HVAC requirements.
The main purpose of the clean laboratory is to protect the safety of experimental personnel, prevent infection of bacteria and viruses, protect the safety of experimental samples, prevent contamination, and ensure the accuracy of experimental results. The key points of its construction include: reasonable process layout, setting up dressing, air shower and buffer rooms as needed, so that the flow of people, logistics, and sewage are clear to avoid cross-infection; decorative materials should be easy to clean and disinfect, corrosion-resistant, dust-free, and non-toxic. It is cracked, smooth and waterproof, and the intersections are treated with arcs and seamlessly connected; the division of the air conditioning purification system should be conducive to the disinfection and sterilization of the laboratory, the setting of the automatic control system, and the energy-saving operation; the clean air conditioning system is adopted with coarse, medium, and The high three-level air filter, the exhaust and the air supply are interlocked; the air flow is orderly, flowing from the clean area to the semi-polluted area and the polluted area.
Although the investment share of the laboratory gas supply system is relatively small, it has an important impact on the safety of the experimental environment. Firstly, professional ventilation and explosion-proof measures must be taken between the gas cylinders; secondly, the gas circuit system must have leak alarms, emergency shutoffs, and strong exhaust devices; thirdly, in order to ensure the gas purity and the stability of the pressure, more measures must be taken. Stage pressure-reduced gas supply, set up gas path purge, emptying and other facilities.
The construction of the various disciplines of the laboratory is staggered and interspersed. The decoration, hydropower, exhaust, air supply, air conditioning, gas supply and other majors must be carefully designed, coordinated, and carefully constructed to ensure the construction progress and quality. In addition, laboratories such as constant temperature and humidity, pure water, and weak electricity also have their own special requirements. Advantages of centralized construction of laboratory projects 1. Centralized construction, focusing on the overall situation, unified planning and design, can prevent congestion and dislocation in design and construction from the source; 2. The overall packaged bidding of the project provides large negotiation space, which is more conducive to the investment cost of the project Control; 3. Uniformly organize construction, clear responsibilities, reduce the intermediate links of communication and coordination, and avoid the phenomenon of mutual excuse and kicking the ball when subcontracting; 4. The management line of the owner, supervisor and other management units is clear, the workload is significantly reduced, and the professional Relatively lower requirements for performance; 5. Overall planning, project quality and duration are more guaranteed; 6. Project after-sales, clear responsibilities, no need for multiple coordination, multi-head management, and better service guarantees.
To sum up, laboratory construction is different from ordinary construction projects. It has the characteristics of comprehensive, professional and systematic. It must be deployed in a unified, coordinated, and concentrated manner in order to better control project risks from the source of organization and management. . Ensure the quality, schedule and risk control of project construction, as well as the use requirements for scientific research and testing after completion.