Excavations
Name 1 trench box vendor.
United Rentals
National Trench Safety
Others
How often must a confined space entry form be completed?
Daily
One option for ventilation.
Confined Space Fans / Blower Fans
If alarm sounds, what should do immediately?
Get everyone out of the confined space immediately and call the Safety Team.
Access/Exit point must be within how many feet from work areas?
25 ft
The minimum distance (in feet) a spoil pile is required to be from the edge of an excavation.
What is 2 feet ?
Name the 3 roles of confined space entry.
Entrant
Attendant
Supervisor
Option #1: Attach to worker
Option #2: Place at working level
When should you contact an underground utility locator company ?
Before you begin digging the excavation
What is the proper slope for type C soil?
1.5 to 1
Required depth for access point to be established.
What is 4 feet?
Who is authorized to evaluate and identify confined space hazards and protection measures?
Confined Space Competent Person
Air monitor readings for safe air.
What is 0, 0, 20.9%, 0 ?
What is the minimum clearance distance equipment should be from powerlines?
Depends on the voltage. Check with power company for voltage and minimum clearance distance.
Name one way to test soil type.
Pocket Pentrometer
Roll Test
Assume soil is type C
How many pictograms are there in HAZCOM ?
9
What heights are we required to test air quality prior to entry with air monitor in a confined space?
all levels of a confined space
Safe oxygen levels in a confined space.
19.5% - 23.5%
If you contact a powerline, then what is the best course of action?
STAY IN YOUR SEAT
What type of soil are you allowed to bench?
Type B Soil
Name the requirements for 2ft, 4ft, 5ft, 6ft, and 20ft.
4ft = access point
5ft = Protection: Shielding, Shoring, or Sloping
6ft = fall protection
20ft = registered professional engineer
Confined Space definition.
2. Large enough for worker to enter
and
3. Not designed for continuous human occupancy
L.E.L. Acronym
What is Lower Explosive Limit?
What subpart of OSHA are the confined space standards found?
1926 Subpart AA