1. What is one of the most important characteristics safety managers should look for in a portable gas detector?
When it comes to portable gas detection, device adaptability is key. Since hazardous gases can present themselves in a myriad of environments—spanning industries such as oil and gas, wastewater treatment, pharma, and chemical and fire services—portable gas detectors need to be able to identify a variety of threats. By performing a Process Hazard Analysis (PHA), safety managers can identify and comprehend potential risks present at a given work site.1 Because each work site presents a unique set of challenges, companies can leverage the PHA to preemptively plan for and introduce necessary steps to mitigate risk and danger for on-site workers. Broadly speaking, PHAs will identify gas-based risks that fall into three categories—potential for explosion, oxygen enrichment or oxygen deficiency ,and toxic gas poisoning.
In work sites where there is a potential for explosion, such as mines, refineries, and chemical plants, flammable gases and vapors are typical ingredients for ignition. If the ratio of a flammable gas to oxygen (or air) lies within a certain Lower Explosion Limit (LEL), an ignitable mixture can form. The LEL of almost all known flammable gases and vapors lies roughly between 0.5 to 15 Vol.-%, however, it's crucial for safety managers to understand the specific potential hazardous materials that can arise on site and ensure that their suite of gas detection equipment can effectively alert workers in such an event.
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