HAZWOPER 40: Lesson 13 Quiz
1. OSHA Standards prohibit excavation under sidewalks and pavement is
prohibited unless an appropriately designed support system is provided or
another effective method is used.: True
2. What occurs when the body is deprived of oxygen?: Asphyxia
3. In sewers and utility tunnels, where isolation is not possible, one should
use written safety procedures that are approved and enforced by whom?: The
employer
4. OSHA requires that (blank) or other suitable means be used to prevent
surface water from entering an excavation.: Diversion ditches
5. A permit is (blank) when an emergency develops and/or an evacuation of
the space is necessitated.: Cancelled
6. OSHA requires adequate means of egress within (blank) feet of lateral travel
when employees are required to be in trench excavations four feet deep or
deeper.: 25
7. The three main atmospheric hazards that cause concern are oxygen deple-
tion, flammability, and (blank).: Toxicity
8. Employers must have a permit program in place if a permit-required con-
fined space is on-site. Before authorizing entry, the employer must do what?:
9. The chief hazard associated with excavations is:: Cave-ins
10. Atmosphere can contain flammable or toxic gases, or be depleted of or
enriched in oxygen. When a condition of IDLH (immediately dangerous of life
and health) exists, what must be used?: Ventilation
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1. OSHA Standards prohibit excavation under sidewalks and pavement is
prohibited unless an appropriately designed support system is provided or
another effective method is used.: True
2. What occurs when the body is deprived of oxygen?: Asphyxia
3. In sewers and utility tunnels, where isolation is not possible, one should
use written safety procedures that are approved and enforced by whom?: The
employer
4. OSHA requires that (blank) or other suitable means be used to prevent
surface water from entering an excavation.: Diversion ditches
5. A permit is (blank) when an emergency develops and/or an evacuation of
the space is necessitated.: Cancelled
6. OSHA requires adequate means of egress within (blank) feet of lateral travel
when employees are required to be in trench excavations four feet deep or
deeper.: 25
7. The three main atmospheric hazards that cause concern are oxygen deple-
tion, flammability, and (blank).: Toxicity
8. Employers must have a permit program in place if a permit-required con-
fined space is on-site. Before authorizing entry, the employer must do what?:
9. The chief hazard associated with excavations is:: Cave-ins
10. Atmosphere can contain flammable or toxic gases, or be depleted of or
enriched in oxygen. When a condition of IDLH (immediately dangerous of life
and health) exists, what must be used?: Ventilation
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