Module 9: Control Techniques - International Association of Fire ...

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IAFF Training for Hazardous Materials: Technician© Student Text Safety General Hazards Besides obvious chemical hazards, other hazards may exist. They include: • Physical hazards include slip/trip hazards, narrow walkways, ladders, or electrical lines. If these hazards are apparent, take extreme care. Better yet, investigate an alternative means of access. Sharp edges on or near containers may snag or puncture protective garments. Extra heavy overgloves and boots or outer suit covers may be needed. Many containment operations require extensive physical effort. Making these efforts in chemical protective clothing is difficult at best, so the performance of the entry team should be carefully monitored. • Environmental hazards are obvious, but often overlooked. Heat, cold, rain and snow will affect your efficiency and working time, requiring you to make adjustments. Also be aware that operations may start in light, but continue into darkness; make sure you have appropriate lighting on hand. • Container hazards often cause injuries. A leaking container indicates that some type of stress has occurred. Determining the source of stress causing the breach can help you predict future container behavior. Pressure vessels are exceptionally dangerous. In addition to the hazard itself, the container may rupture. • Container stability is extremely critical. All the protective clothing available will not protect you if a container falls on you. Assess the stability of a container and correct it, if necessary, before you begin containment operations. • Container integrity is an issue because if the container has already been breached, it has lost some of its integrity. The container must be able to support the contain- 9-12 Module 9: Control Techniques
Student Text IAFF Training for Hazardous Materials: Technician© ment techniques you chose. For example, a tank leaking product because of extensive corrosion will probably not withstand the application of a bandage device. The device itself may cause further damage. • Energy releases must be prevented when you are working in the Hot Zone. Recognize that the container itself may contain energy in the form of pressure. In industrial settings, other energy sources like motors, fans, presses, or heaters may activate automatically. Be sure any electrical equipment is locked and tagged out before you begin work. Ignition sources should also be controlled as a matter of procedure, regardless of the flammability hazards. Basic Safety Procedures Regardless of product or container, some basic safety procedures should be followed. • Have a plan. Have a clear understanding of what you are trying to accomplish. As a team, you have a duty to each other and to yourself to develop a plan and delegate responsibility appropriately. If a plan cannot be implemented because of unforeseen circumstances, the team should back out and regroup, rather than going ahead with an impromptu plan. • Stay away from the product. Walk around puddles, avoid kneeling in product or leaning on things, and stay away from escaping gas plume. These practices should become second nature to experienced responders. Team members should watch out for each other. • Have correct tools available. Labor saving devices like drum levers, dollies, and handcarts can prevent stress. • Reduce leaks before containing them. Many leaks/ releases can be minimized or even eliminated by simply re-orienting the container. Containers leaking liquids can be rolled so that the breach is above product level. Containers of liquefied gases that are leaking liquid Module 9: Control Techniques 9-13
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