Construction Plan for University Physics and Chemistry Laboratories

I. Ventilation, Explosion Prevention, and Environmental Control

Laboratory General Ventilation and Zoned Ventilation: Ensure indoor air exchange rates, install fresh air systems capable of localized exhaust. Fume hoods should be arranged as needed, meeting requirements for air velocity, exhaust volume, and lighting; ventilation systems should include alarms and interlocking mechanisms.

Explosion Prevention and Flammable Material Management: Flammable solvents and gases must be stored in explosion-proof rooms or dedicated storage cabinets, using explosion-proof lighting, electrical equipment, and grounding measures to prevent static electricity buildup.

Temperature, Humidity, and Cleanliness: Maintain appropriate temperature and humidity control for precision instruments (e.g., air conditioning for constant temperature and humidity), establish constant temperature rooms, clean areas, or dust-free rooms as necessary; ensure doors and windows of instrument rooms are sealed to minimize temperature fluctuations.

Vibration and Electromagnetic Interference Control: Install vibration-damping foundations or isolation platforms for highly sensitive equipment, and keep them away from strong electromagnetic interference sources (high-voltage equipment, wireless base stations, etc.).

II. Water Supply, Drainage, and Chemical Waste Management

Laboratory Water Systems: Design separate systems for deionized water, ultrapure water, and domestic water, including backwashing, softening, and corrosion-resistant piping. Implement planned water quality monitoring and maintenance.

Laboratory Wastewater Treatment: Install neutralization tanks, oil-water separators, organic solvent recovery systems, and wastewater collection systems; it is crucial to comply with regulations and institutional requirements to avoid direct discharge without treatment.

Hazardous Chemical and Waste Storage: Design dedicated hazardous material storage rooms (ventilated, temperature-controlled, leak-proof, fire-resistant), toxic reagent cabinets, and hazardous waste storage areas. Floors should have leak collection troughs and chemical corrosion-resistant treatment.

III. Electrical Power, Grounding, and Gas Systems

Electrical Capacity and Circuit Distribution: Design power distribution loads based on instrument power ratings and safety factors. Critical instruments (e.g., mass spectrometers, NMR) should have dedicated power supplies with UPS to avoid voltage fluctuations affecting tests.

Grounding and Lightning Protection: Ensure overall laboratory grounding is effective, instrument grounding wires are reliable, and critical equipment has independent grounding. Buildings should be equipped with lightning protection measures, and instrument ground loop impedance must comply with standards.

Gas Supply and Vacuum: Centralized gas lines (nitrogen, argon, compressed air, hydrogen, etc.) must include pressure reduction, pressure relief, anti-backflow, and alarm systems. Gas pipelines should be labeled, color-coded, and fitted with safety valves and shut-off devices. High-pressure gas cylinders must be secured and stored in well-ventilated areas.

Backup and UPS: Critical laboratories should have uninterruptible power supplies, stable power sources, and necessary emergency lighting.

IV. Building Materials and Interior Finishing

Chemical-Resistant Materials: Select work surfaces resistant to acids, alkalis, and organic solvents (e.g., epoxy resin surfaces, PTFE linings, stainless steel). Floors should have anti-slip, corrosion-resistant coatings or chemical-resistant tiles.

Fire Rating and Fire Compartmentation: Walls, doors, windows, and exhaust systems must meet fire safety standards. Establish fire compartments and automatic fire suppression systems, with clear markings for escape routes.

Lighting and Visibility: Provide ample and uniform lighting, with flicker-free task lights for localized work areas. Use windows and shading measures to prevent direct sunlight from affecting experiments or light-sensitive reagents.

Storage and Workbench Height: Workbench heights should comply with ergonomic principles. Equip with sufficient locked storage cabinets, reagent cabinets, waste collection containers, and personal item storage areas to avoid mixing personal items with laboratory supplies.

V. Safety Facilities and Emergency Systems

Emergency Eyewash and Safety Showers: Install eyewash stations and emergency showers in areas where chemical exposure is possible, ensuring unobstructed access and regular flush testing.

Fire Extinguishers and Automatic Fire Suppression Systems: Equip with suitable fire extinguishers (foam, CO2, dry powder), fire alarms, and sprinkler systems; explosion-proof firefighting equipment should be deployed in flammable material areas.

Cleanliness and Leak Detection Systems: Gas leak alarms, combustible and toxic gas detectors, smoke alarm interlocking systems, and emergency shut-off switches.

Emergency Lighting and Escape Routes: Ensure adequate emergency lighting, clear and unobstructed evacuation pathways, clearly marked door directions, and develop and practice emergency evacuation plans.

VI. Instrument Layout and Maintenance

Instrument Spacing and Cooling/Exhaust: Reserve space for heat dissipation and exhaust for large or high-heat equipment. Maintain reasonable spacing between instruments for ease of maintenance and repair.

Vibration Isolation Platforms and Mounting Bases: Use vibration isolation foundations or damping platforms for sensitive equipment (e.g., scanning probe microscopes, electron microscopes) to avoid external vibration interference.

Regular Maintenance and Upkeep: Establish instrument logs, maintenance schedules, and calibration systems. Arrange spare parts and professional maintenance contracts in advance.

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