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39 Cards in this Set
- Front
- Back
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Excavations less than 5 feet deep are exempt from Shoring and sloping according to OSHA true or false. |
True |
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Trench 4 feet or more in-depth should be provided with a ladder for safe egress true or false |
True |
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What is the minimum safe clearance between cranes and energized power lines operating at 50,000 volts or less |
10 feet |
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For all excavations deeper than 20 feet the Shoring and side slopes should be determined by an engineer true or false |
True |
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What is TLV |
Threshold limit values |
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What type of fire is a type D fire extinguisher used for |
Combustible metals |
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What type of fire can a Type B fire extinguisher put out |
Gas oil and burning liquids |
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What type of fire does a type c fire extinguisher put out |
Live electrical fires motor switches and appliances |
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How far should a ladder extend above its lean edge |
3 feet |
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Working in a trench how far away can egress ladders be placed |
25 feet |
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How far away can excavated material in soil be placed from the edge of excavation |
2 feet or more |
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What's the rule of thumb for ladder angle |
4 to 1 ratio |
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What is considered scaffolding |
Any temporary elevated platform with its base structure design for supporting workers material or both |
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Guard rails and toe board shall be installed on all open sides and ends when scaffold or structure exceeds 10 feet above the ground, true or false |
True |
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Guardrails shall be installed at what height |
42 inches |
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Toe board shall be a minimum of |
4 inches |
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What is the minimum size of a scaffold plank |
2 inches x 10 inches |
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HEPA STANDS FOR |
High-efficiency particulate absolute filter |
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OSHA stands for |
Occupational safety and health administration |
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Empty acetylene cylinders should be stored upright kept and secured how far away from oxygen cylinders |
Twenty feet apart or one hour fire wall |
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What three factors must be taken into account when determining trench design |
Soil structure, weather and moisture conditions, trench depth |
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Two methods that may be used to protect workers in a trench |
Sliding train Shields , metal and portable hydraulic shoring systems |
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Define confined space |
Limited openings for egress, not designed for continuous worker occupancy, unfavorable natural ventilation |
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If there is less than 19.5% oxygen in the atmosphere it is considered oxygen-deficient true or false |
True |
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MSDS stands for |
Material safety data sheets |
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What type of oxides are given off while welding stainless |
Nickel and chromium |
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What three methods can systemic poisons enter the body |
Inhalation, ingestion, absorption |
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The permissible noise level exposure for 90 decibels is |
8 hours |
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The permissible noise level exposure for 95 decibels is |
4 hours |
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Ear plugs must be worn if the noise level is greater than |
115 decibels |
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What type of fire does a type A fire extinguisher put out |
Paper wood cloth |
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How is static electricity generated |
By the contact and separation of dissimilar materials |
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What are the three Essential Elements necessary to produce an ordinary Flame |
Fuel Heat and oxygen |
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What is the minimum allowable overhang on scaffold planks |
6 inches |
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What are the harmful products of incomplete combustion |
Carbon monoxide and aldehydes |
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Name the odorant used in natural gas and propane |
Mercaptan |
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IDLH stands for |
Immobility dangerous to life or health |
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Scaffold should support how many times the anticipated weight |
4 x |
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The height of the scaffold platform shall not exceed 4X the minimum base dimensions true or false |
True |
