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Question 1
According to OSHA, what is the minimum depth at which a trench must be protected by a protective system such as shoring, sloping, or trench boxes?
Answer: Any trench 5 feet or deeper must have a protective system in place. Trenches less than 5 feet may also require protection if the competent person determines hazardous conditions exist.
Question 2
What does the OSHA Hazard Communication Standard (HazCom) require employers to provide workers for each hazardous chemical in the workplace?
Answer: Employers must provide a Safety Data Sheet (SDS) for each hazardous chemical. SDSs detail chemical properties, health hazards, protective measures, and emergency procedures.
Question 3
When working in a confined space classified as a 'permit-required confined space,' what must be completed before any worker enters?
Answer: A written entry permit must be completed and signed by the entry supervisor. The permit verifies that all testing, equipment, and safety procedures are in place before entry.
Question 4
What is the OSHA-required minimum distance that a ladder must extend above the upper landing surface when used for access to a roof or elevated platform?
Answer: The ladder must extend at least 3 feet above the upper landing surface. This provides a safe handhold for workers transitioning on and off the ladder.
Question 5
Under OSHA's lockout/tagout (LOTO) standard, what must a plumber do before servicing or maintaining equipment that could unexpectedly energize?
Answer: The plumber must isolate all energy sources and apply a personal lockout or tagout device to prevent re-energization. All stored energy must also be released or restrained before work begins.