Operating a laboratory requires a balance of safety, efficiency, and function. Lab managers must ensure that both the building and the work performed in the lab meet certain safety and regulatory requirements, while also ensuring that research, experiments, and testing can yield results that are both accurate and verifiable.
Depending on the type of work taking place, labs may require gas detection systems to prevent toxicity and other problems that can endanger workers or compromise research and development. With an understanding of these critical considerations, researchers, lab managers, and building designers or architects can determine how best to integrate gas detection capabilities into a lab design.
Reasons to Implement Gas Detection in Laboratories
Integrating gas detection systems into lab design can improve safety, leak monitoring, compliance, and other aspects critical to the lab’s function:
- Safety: Safety should be a priority for any lab setting. Depending on the nature of the research, safety precautions might include testing to determine the concentration levels of certain gases in the lab. Multi-gas testing equipment provides data to help lab managers ensure that concentration levels are safe, reducing or eliminating the risk of toxicity, combustion, or test corruption.
- Compliance: Analyzing chemicals, gases, or other hazardous materials is typically subject to strict regulatory requirements. Compliance goals might include improving ventilation and increasing efficacy of storage. Gas detection systems might be required and can prove valuable even when there is no legal mandate to use them. Organizations that fail to achieve compliance goals and prioritize safety may lose the chance to earn valuable contracts, and they might also face enforcement penalties from regulatory bodies.
- Leak monitoring: Gas systems and storage equipment can sometimes leak. Prevention measures include a leak monitoring system that provides real-time data about the source, status, and extent of the leak. Toxic gas detectors can identify the presence of noxious gases and alert lab staff to the problem for prompt resolution or even immediate evacuation, if merited.
Best Practices for Gas Detection Systems Integration
Selecting the best gas detection system for a particular lab depends on the setting, its critical functions, and the ways in which gases can interact with the environment. Following these best practices can help lab managers and staff enhance personal safety and the integrity of experiments:
Early Planning
Early planning is essential to determine how best to integrate a gas detection system that does not hinder the function of the lab. Ideally, lab designers will account for the presence of a gas detection system in their initial layout, before the lab is constructed. They will need information that includes the types of research to be conducted in the lab; solvents, chemicals, gases, and other materials that will be present; and the available devices, systems, and equipment available to optimize safety. With an advance plan, lab managers can have the right system in the proper place for effective use before lab operations begin.
Risk Assessment
Integration of gas detection also requires risk assessment. Not every lab faces the same dangers, and the considerations for the lab may vary depending on each unique project. Administrators should consider the following when developing a risk assessment strategy:
- Gases that require detection
- Level of sensitivity required and the detection range
- Accessibility of gas detection systems for the application
- Environmental conditions, such as heat, humidity, or air circulation
The conclusion of the risk assessment should highlight areas and functions of the lab that are most likely to need gas detection.
Sensor Selection
The types of sensors needed depend on the gases present and the application. Different sensor technologies include:
- Infrared: Sensors use the absorption of infrared light to detect hydrocarbons and carbon dioxide.
- Photoionization: Sensors use ultraviolet light to ionize gas molecules, creating currents that can detect volatile organic compounds.
- Catalytic bead: Sensors use a catalyst to measure heat produced when it comes in contact with a gas, which is highly effective at detecting flammable gases such as methane or propane.
- Electrochemical: Sensors create an electrical current based on the presence of certain gases, highlighting toxic gases such as carbon monoxide or hydrogen sulfide.
Some instruments contain multiple sensors, allowing them to test for the presence of several gases at once.
Detector Placement and Configuration
Determining the best placement for gas detection systems involves a discussion of lab function, gas storage, and other factors. Gas detectors should be placed in the location where a leak or unexpected release of gases is most likely. This might be a storage facility or specific testing apparatus or location, such as a cleanroom. Wireless or portable gas detection systems can provide accurate testing without requiring access to a wired power source. Once placed, the system requires configuration and calibration according to manufacturer directions. With correct installation, the detection systems can provide accurate readings and prompt alerts to lab staff.
Integration With Existing Infrastructure
Laboratories should have a documented safety protocol that involves regular testing and practice in handling problems. All lab staff should receive training in the use of the gas detection equipment, including how to read alerts and what to do in the event of a leak. The lab should create and follow a plan to test the detectors to confirm they work properly. Ideally, these safety plans mesh with a lab’s existing infrastructure. For example, the presence of toxic gases may require a shutdown of the building’s ventilation system to prevent the gases from passing to other parts of the building.
Integrating gas detection systems into analytical laboratories requires a careful analysis of various considerations. By evaluating the need for safety and compliance based on the types of work being done, lab designers can position and use gas detectors for maximum efficacy.
