EXCAVATIONS - OSHA-10 QUESTIONS WITH 100 % CORRECT ANSWERS | VERIFIED LATEST

According to OSHA standards, a competent person is defined as one who is capable of identifying existing and predictable hazards in the surroundings or working conditions which are unsanitary, hazardous, or dangerous to employees, and who has authorization to take prompt corrective measures to eliminate them. Is this true or false? - True Among many other responsibilities, a competent person is responsible for evaluating soil conditions; testing for low oxygen, hazardous fumes, and toxic gases; and providing safe access and egress. Is this true or false? - True At what depth must a ladder, ramp, steps, or runway be present for quick worker exit? - 4 feet Correct the hazards that can be corrected. Whose responsibility is this? - worker Employees are working within an excavation that is more than 4 foot deep and cannot safely exit the site. What is a hazard that needs to be addressed in this situation? - access and egress In order for a worker to be considered competent, they only need to have specific training in and be knowledgeable about identifying hazards, and are authorized to immediately eliminate hazards. Is this true or false? - False Inspect the excavation at least daily and throughout the shift as needed. Whose responsibility is this? - Employer Keep excavated dirt, rocks, and other materials back two feet from the excavation's edge. Whose responsibility is this? - employer Most excavation accidents occur at what depth? - 5 to 15 feet. Protect workers from cave-ins and other excavation-related hazards. Whose responsibility is this? - employerThere are ways to protect yourself when excavating. Which of the following is a way to protect yourself when working around excavations? - Slope or bench the sides of the excavation and support the sides of the excavation. This excavation is at risk for a cave-in because the walls of the excavation are unstable. What type of excavation protection will address this situation? - Shoring This excavation is at risk for cave-in and water accumulation because of the excess soil that has accumulated. What type of excavation protection will address this situation? - Correctly placed spoils This type of soil is cohesive and has high unconfined compressive strength. Examples include clay, silty clay, and clay loam. - Type A This type of soil is cohesive but has been cracked or disturbed, or is located near sources of vibration. Examples include angular gravel and silt loam. - Type B Unless made in entirely stable rock, at what depth is a protective system required for a trench? - - Any depth if the competent person says so -5 feet and greater What are the three main protection methods against cave-ins? - Shields, shoring, and sloping