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22 Cards in this Set
- Front
- Back
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Objective number one |
To help you understand how to dig safely and prevent damage to underground facilities |
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Excavation Arizona and California |
Any activity in which any tools including hand tools equipment bar explosives are used |
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Nevada excavation |
Any activity in which mechanical equipment or explosives are used |
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Types of pipeline |
Plastic pipe and steel pipe with plastic coating |
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One call law |
To prevent damage to all underground facilities during excavation |
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One call law color codes for marking underground facilities |
White proposed excavation Red temporary survey marks Lighter red electric power lines Yellow gas oil and steam Orange communication telephone Blue Water Purple reclaimed water Green sewage and storm drains |
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One call law kick it remains active for in Nevada and Arizona |
28 consecutive days in Nevada and California 15 working days in Arizona |
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The tolerance Zone from each side of locate mark |
24 in |
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Objective number two |
To give you the information needed to protect people and property during an emergency |
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Objective number backfill |
Protect our facilities during backfill operations |
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Types of padding in shading |
Native and import |
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Requirement for sieve or filter |
3/8 inch |
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What is padding |
Material below pipe |
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What is shading |
Material above and on the side of the pipe |
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How much padding do you need blow pipe |
6 in |
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What is the distance between a pipe and the side of the trench |
One inch |
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How much shading do you |
6 in |
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Distance away from other utilities |
12 inches |
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What material do you use above the shading and how much of it do you use |
3 in minus material and 6 in |
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When do you use sleeving to cover the pipe |
When you cannot achieve proper clearance from other utilities |
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Backfill above sleeping |
6 in above sleeving and 3 in - material in California Nevada and one and a half inch in Arizona |
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Where does the underground warning tape go |
Last lift of backfill |
