STS Test Prep Exam with verified solutions 2024

Where employee brings their own PEE, what is the responsibility of the employer? Assure the PPE's adequacy. (OSHA pg 127) What's the standard for eye protection? ANSI Z89.1-1969 (OSHA pg 127) How to ensure that a rope will hold a load? Checkt o see if the rated load capacity for the rope is being exceeded. Stairway handrails should be installed at ____ from the surface of the tread to upper surface of the handrail. 48" Safety Instruction Signs shall be what color? Green upper panel with white letters for principal message. Other shall be black on white background. What two colors are on a directional sign (not automotive)? Black and white. (OSHA pg 159) NFPA 704 Label: Blue signifies __________ and is on located on the ____. Health hazard, left. NFPA 704 Label: Red signifies __________ and is on located on the ____. Fire hazard, top. NFPA 704 Label: Yellow signifies __________ and is on located on the ____. Reactivity, right. NFPA 704 Label: 0 is ____ hazardous and 4 is _____ hazardous _____. least, most. NFPA 704 Label: Bottom diamond is reserved for ______. Specific hazards (acids, alkali, corrosive, oxidizer, radioactive, Use no water. Yellow ractivity diamond is often referring to reactivity with _____. Water. Fire extinguishers - Type A Ordinary Combustibles (Ashes) Fire extinguishers - Type B Flammable Liquids (Barrels) Fire extinguishers - Type C Electrical Equipment (Current) Fire extinguishers - Type D Combustible Metals 2A10BC Fire extinguisher. What does the 2 mean? For Type A fires, a 1 would stand for the equivalent of 1 ¼ gallons of water, a 2 would represent 2 ½ gallons, 3 would be 3 ¾ gallons of water, etc. Each number adds 1 ¼ gallons equivalent of water. 2A10BC Fire extinguisher. What does the 10 mean? For Type B and Type C fires, the number represents square feet of fire. For example, 2 would be two square feet, 5 is five square feet. Scaffold top rail height (range). 38-45 inches. Who is responsible for PPE? Employer Minimum depth that a PE is required to design a shoring system. 20' What should you do with tool O&M manuals? a)Go over them with the workers b)Put them on the jobsite, and have the workers go over them before starting work. a) Go over them with the workers. An OSHA compliance officer issues a citation. Who is responsible? (worker, GC, super, foreman) General Contractor When monitoring a confined face, which should you check for first? Oxygen Deficiency. T/F , before entering a permit-required confined space, the attendant and everyone need to be on lifelines. True Requirements of _____ include attendant remaining in sight of all employees and lifelines for everyone. Permit-required confined spaces Operating vibrating equipment can cause what syndrome/disorder? Raynaud's Syndrome If an instrument measuring flammable gas reads 30%, the 30% stands for 30% of _________. the lower exposure limit What is the state of gas between the LEL (lower explosive limit) and the UEL (upper explosive limit)? explosive. What is the state of gas above the upper explosive limit. Over-concentrated and not explosive. Regarding LEL and UEL, gas concentration is a percentage of the total volume of the flammable gas with the balance being __________. Normal air. IDLH Immediately Dangerous to Life or Health Maximum depth of a trench before a ladder is needed for access and egress. 4 feet Who can supervise the erection of a 50-foot scaffold? Competent person. What rail protection is required for scaffolds located 10 feet or more above lower level scaffolds? Handrails, Mid rails, and toe boards. Key factor for implementing a good safety program. Getting foremen and supervisors involved. Minimum distance between ladders used for access and egress into an excavation. 25 feet. Handrails should be capable of withstanding ____ lbs of force. 200 lbs. Minimum width of access to an exit in new construction per NFPA. 36 inches Primary reason for storing acetylene cylinders upright. Prevent liquid acetone from escaping and releasing acetylene. Boom indicator indicates _______. Boom angle relative to horizontal.