Final answer:
Before hot work begins and daily during authorization, the responsible person must perform a pre-hot work check to ensure safety measures are in place, including securing loose items and knowing emergency equipment location.
Step-by-step explanation:
Before hot work is authorized and at least once per day while authorization is in effect, the responsible person must conduct a pre-hot work check. This involves ensuring that all necessary safety measures are in place, such as securing loose clothing, knowing the location of fire safety equipment like fire extinguishers and eyewash stations, handling chemicals carefully, and ensuring Bunsen burners are turned off after use. The goal is to prevent accidents such as fires or explosions, which can be caused by the ignition of flammable chemicals or other materials in the vicinity.
Hot work procedures must be heeded at all times to maintain a safe laboratory environment. Therefore, always follow safety instructions carefully with respect to flammable chemicals and ensure long hair is tied back and loose clothing is tucked in to prevent any accidents. Any out-of-the-ordinary situation must be reported to the teacher immediately, and an accident report may be needed if someone is hurt or materials are damaged.