308A Safety Regulations and Trade Practices 2

Question 1

What ventilation method is most effective when soldering or brazing in an enclosed or partially enclosed space?

Accepted Answer

Local exhaust ventilation (LEV) positioned directly at the source

Answer

Local exhaust ventilation captures fumes at the point of generation before they can disperse into the worker's breathing zone, making it far more effective than dilution ventilation.

Question 2

What is the safest way to manually carry a large sheet of metal from a storage area to a workstation?

Accepted Answer

Carry it vertically using cut-resistant gloves, folded edges facing away, tip pointing downward

Answer

Carrying sheet metal vertically in gloves with protected edges and the leading corner pointing down minimizes the risk of cuts and loss of control.

Question 3

According to Canadian occupational health standards, what is the permissible 8-hour noise exposure limit that triggers mandatory hearing protection?

Accepted Answer

85 dB(A)

Answer

Canada's federal and most provincial OHS regulations set 85 dB(A) as the 8-hour time-weighted average threshold above which hearing protection is mandatory.

Question 4

Before entering a confined space such as a large duct plenum to perform sheet metal work, what must happen?

Accepted Answer

Atmospheric testing must be completed and a confined space entry permit obtained

Answer

Canadian OHS regulations require atmospheric testing for oxygen levels, flammable gases, and toxic substances, plus a signed entry permit, before any confined space entry.

Question 5

What does the acronym SDS stand for, as introduced under the updated WHMIS 2015 standard?

Accepted Answer

Safety Data Sheet

Answer

SDS (Safety Data Sheet) replaced the older MSDS (Material Safety Data Sheet) under WHMIS 2015, which aligned Canada's system with the Globally Harmonized System (GHS).

Red Seal Sheet Metal 308A Practice Test

Red Seal Sheet Metal 308A Practice Test

308A Safety Regulations and Trade Practices 2