STS Test Prep Questions With Correct Answers

Where employee brings their own PEE, what is the responsibility of the employer? - Answer Assure the PPE's adequacy. (OSHA pg 127) What's the standard for eye protection? - Answer ANSI Z89.1-1969 (OSHA pg 127) How to ensure that a rope will hold a load? - Answer 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. - Answer 48" Safety Instruction Signs shall be what color? - Answer 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)? - Answer Black and white. (OSHA pg 159) NFPA 704 Label: Blue signifies __________ and is on located on the ____. - Answer Health hazard, left. NFPA 704 Label: Red signifies __________ and is on located on the ____. - Answer Fire hazard, top. NFPA 704 Label: Yellow signifies __________ and is on located on the ____. - Answer Reactivity, right. NFPA 704 Label: 0 is ____ hazardous and 4 is _____ hazardous _____. - Answer least, most. NFPA 704 Label: Bottom diamond is reserved for ______. - Answer Specific hazards (acids, alkali, corrosive, oxidizer, radioactive, Use no water. Yellow ractivity diamond is often referring to reactivity with _____. - Answer Water. Fire extinguishers - Type A - Answer Ordinary Combustibles (Ashes) Fire extinguishers - Type B - Answer Flammable Liquids (Barrels) Fire extinguishers - Type C - Answer Electrical Equipment (Current) Fire extinguishers - Type D - Answer Combustible Metals 2A10BC Fire extinguisher. What does the 2 mean? - Answer 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? - Answer 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). - Answer 38-45 inches. Who is responsible for PPE? - Answer Employer Minimum depth that a PE is required to design a shoring system. - Answer 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. - Answer a) Go over them with the workers. An OSHA compliance officer issues a citation. Who is responsible? (worker, GC, super, foreman) - Answer General Contractor When monitoring a confined face, which should you check for first? - Answer Oxygen Deficiency. T/F , before entering a permit-required confined space, the attendant and everyone need to be on lifelines. - Answer True Requirements of _____ include attendant remaining in sight of all employees and lifelines for everyone. - Answer Permit-required confined spaces Operating vibrating equipment can cause what syndrome/disorder? - Answer Raynaud's Syndrome If an instrument measuring flammable gas reads 30%, the 30% stands for 30% of _________. - Answer the lower exposure limit What is the state of gas between the LEL (lower explosive limit) and the UEL (upper explosive limit)? - Answer explosive. What is the state of gas above the upper explosive limit. - Answer 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 __________. - Answer Normal air. IDLH - Answer Immediately Dangerous to Life or Health Maximum depth of a trench before a ladder is needed for access and egress. - Answer 4 feet Who can supervise the erection of a 50-foot scaffold? - Answer Competent person. What rail protection is required for scaffolds located 10 feet or more above lower level scaffolds? - Answer Handrails, Mid rails, and toe boards. Key factor for implementing a good safety program. - Answer Getting foremen and supervisors involved.