In high-risk workplaces like petrochemical facilities, safety takes precedence above all.
Hazardous gases are invisible threats that can have severe health consequences when inhaled. Protection from hazardous gases can be added to RedGuard’s protective buildings to keep those who work in hazardous areas safe from toxic gases.
Hazardous gases are categorized based on their toxicity levels, often quantified by their LC50 — the concentration at which 50% of test animals die during exposure. The National Fire Protection Association classifies these gases into four categories, with Class 4 representing the most highly toxic, Class 3 for dangerous toxic, Class 2 for moderately toxic and Class 1 for the least toxic. However, it’s important to note that OSHA uses the Global Harmonized System, which reverses this classification with Class 4 being least toxic. Understanding these categories is crucial for assessing the potential dangers of hazardous gases and implementing appropriate safety measures.
In workplaces, one critical concern is the presence of hazardous gases in confined spaces, particularly in refineries during inspections and maintenance. A permit to work is mandatory to ensure safety, with proper gas detection equipment being a crucial step before entry. Portable gas detection equipment is used to identify residual toxic gases, such as H2S or elevated nitrogen levels, some of which can be invisible and odorless, creating an extremely hazardous atmosphere.
Gas detection systems are indispensable for safeguarding workers by serving as early warning systems. For example, in the O&G industry, deadly petroleum gases — like benzene, butane and methane — along with H2S, diesel exhaust, mercury vapor and flammable gases all pose significant threats. Mitigating these risks involves various measures, such as using self-contained breathing apparatus, classified HVAC systems that provide positive pressure and purging, monitoring equipment, engineering controls, employee training, low emission engines, exhaust treatment devices, risk assessments and comprehensive safety programs. Proactive measures are essential to ensure both human safety and environmental preservation.
When partnering with RedGuard for specialized modular buildings, like its SafetySuite ® line, its team of experts will work closely and diligently to identify and implement tailored toxic gas protection measures. RedGuard’s solutions are designed to keep facilities and their occupants safe from potential toxic gas hazards.
Gas detection equipment plays a pivotal role in identifying the presence of toxic gases within a specialized modular building. Gas sensors are the frontline defense, providing real-time monitoring to promptly alert occupants and responders to potential hazards. Gas detection is vital but is best used with other systems to address protection from toxic gas once it has been identified.
The next level of protection involves pressurization systems designed to maintain positive pressure within a building. These systems work in tandem with gas detection equipment to prevent the infiltration of toxic gases. The "fresh air stack" plays a critical role in this process by continually introducing clean, outside air to maintain positive pressure. This positive pressure environment helps create a barrier against the ingress of hazardous gases, bolstering safety measures within the structure.
At the highest level of protection, specialized modular buildings incorporate an airlock system to meet shelter-in-place requirements in high-hazard areas with potential toxic releases. Understanding the scenarios that necessitate an airlock system is crucial, as this protection level ensures safety when evacuation might not be feasible. The airlock system consists of components such as substantial pressurization, sealants and vestibules all working together to create a controlled environment that prevents the entry of toxic gases. The concept of shelter-in-place becomes a lifeline in such scenarios, emphasizing the importance of advanced air leakage control.
In some cases, a combination of gas detection, pressurization and airlock may offer the most balanced approach to toxic gas protection.
In O&G, prioritizing safety is pivotal. Comprehensive gas detection and safety measures help prevent accidents and protect both those who work in areas where toxic gas releases are a risk and the surrounding environment. It’s crucial to choose a protection level that complies with regulations and prioritizes worker safety. When opting for gas detection equipment, pressurization systems, airlock configurations or a combination of these, it is essential to prioritize the safety of the occupants.
For more information, visit redguard.com or call (855) 733-4827.
