A5 Use Safe Work Practices Flashcards
OHS Comity is made up of who?
Worker and employer representatives
What does the comity do?
responsible for promoting safety, improvements, deals with complaints, safety inspections, and assist with investigations.
what does a comity not have?
Decision making authority
The minimum number of comity members is?
4 employers and workers
what does organizations under 20 workers have?
just one worker health and safety representative
how often does the comity meet?
once per month
who must keep records of each meeting and what should they include?
the employer must keep the records including the minutes and a list of attendees
What are Minutes?
Minutes are a brief synopsis of the subjects that were discussed
what percent of the comity must be workers?
50%
During safety inspections, who accompanies the the WorkSafe inspector?
A worker member
An accident report should include what?
witness statemnets, description of incident, analysis, prevention
Site investigations should include what?
soil types, drainage, material removed or added, location of services.
Water lines should be what?
easily accessible incase of a leak and replacement
where do perimeter drains and drainage tile drain out too?
Storm Sewer
Gas lines should always be what?
located, installed/removed, stacked by certified gas fitter
Gas lines are buried how far down for steel and polyethylene pipe?
305mm steel, 460mm polyethylene
all services can be in the same trench except for two?
water lines and sewer lines
Gas meters are located how far up from the ground?
900mm
what is the life expectancy of underground lines?
50 years
water must not ___ in an excavation
Pond or else it will decrease the bearing capacity
soil Piles must be how far away from an excavation
4 feet
Soil piles must be how far away from a trench
2 feet
what is used to measure the depth of an excavation?
builders level
what must be onsite during blasting?
Guards and barricades for pedestrians
to warn people what must happen before the blast?
12 short whistle signals at one second intervals followed by 2 minutes of silence then the blast is initiated
what happens after the blast?
5 seconds of a continuous whistle
what must the employer add to the boundary of the site being blasted?
warning signs and personnel to keep pedestrians away
Excavations deeper then ___ must provide sides to be shored, sloped, or benched
1.2 meters
what must be provided for safe access into a trench?
sloped sides or ladder
walkways crossing trenches must be___?
at least 500mm wide, no more then 1:5 slope and slip resistant
Soils are divided into 3 types
Type A: Hard and load bearing
Type B: Soils likely to crack and crumble
Type C: soft, sandy, loose soils
what is hydrostatic pressure?
ground water seeping up from the ground to be level with the water table
what is benching?
vertical cuts at least 1.2m and horizontal cuts 1.5 times what ever vertical cut is
when can plywood be substituted for up right planks?
as long as the trench does not exceed 2.7m
what is telescope shoring?
stacked planks to extend further into the trench if the trench is deeper then the tallest plank
trenches can be sloped at what degree?
15 degrees
Guard rails must be how tall?
1020mm-112omm
only what grades must be used?
1 or 1A
ladders must extend how far past edge of structure?
900mm
what is the safe slope of a ladder?
4:1
ladder cleats must be spaced how far apart?
300mm on center
Ladders are constructed out of what?
aluminum or No. 2 lumber or better
what is the minimum gap of a toe board?
13mm
Chutes must be provided if the free fall of material is higher then___?
6 meters
Designs for support systems must have a ___?
a scheduale
