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32 Cards in this Set
- Front
- Back
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Hearing protection is required after |
85 dba |
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When using a ladder, top two steps |
Cannot be used |
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Extension ladder must extend how far past platform? |
1M |
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And extension ladder must have |
Non slip feet and be tied off at top and bottom |
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Trenching |
Trenching |
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Shoring and cutback needed at what depth? |
5 feet or 1.5 M |
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Angle of cut back? |
30-45 degrees |
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Spoil pile must be how far from edge? |
3 ft or 1 M |
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3 types of welding rays? |
UV, infrared, visible light |
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Which is most dangerous ray? |
Infrared |
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Welding lenses? |
1-12 |
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1-3 are the |
Safety lenses |
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4-12 are the |
Welding lenses |
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What is the purpose of whmis? |
Educate, label, msds |
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What is a MSDS? |
Material safety data sheet Provides info on hazards of working w chemicals and how to deal w them |
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IDHL? |
Immediate Danger to Health or Life |
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What are the 6 whmis classes? |
A B C D (1,2,3) E F |
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Whmis is updated every |
3 years |
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Minimum distance to operate crane near power lines? |
7M or 21 ft |
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Ladder ratio? |
1:4 |
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Handrails are installed on scaffold that is |
3 M high |
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Toe boards are |
140 mm high |
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Permanent toe boards are needed at what height? |
1.8 M |
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Temporary toe boards are needed when? |
3.5 M |
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Max height of scaffold on wheels? |
3X smallest base |
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Scaffold can be ridden at what height? |
2 X smallest base |
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Fire extinguisher classes? |
A B C D K |
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Class A used for? |
Wood/paper fires |
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Class B for? |
Flammable liquids and gases |
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Class C? |
Electrical fires |
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Class D? |
Combustible metals |
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Class K? |
Grease/ oil fires |
