G3 - Gas Technician Level 3 Workplace Safety and PPE Questions and Answers 1 — Questions and Answers
Question 1: A gas technician is preparing to service a rooftop unit. Which of the following PPE is essential for protection against potential falling objects and impact hazards?
- CSA-certified safety glasses
- A CSA-certified hard hat (Correct answer)
- Steel-toed boots with puncture-resistant soles
- High-visibility vest
Correct answer: A CSA-certified hard hat
A CSA-certified hard hat is the primary piece of personal protective equipment designed to protect the head from impact from falling objects, which is a significant risk when working on construction sites or below areas where overhead work is being performed. While other PPE is important, the hard hat specifically addresses the hazard of falling objects.
Question 2: When drilling into masonry to run a gas line, a technician is exposed to flying particles and dust. According to CSA Standard Z94.3, what is the most appropriate eye protection for this specific task?
- Standard prescription eyeglasses
- Safety glasses with side shields
- Directly-vented goggles
- A full-face shield worn over safety glasses (Correct answer)
Correct answer: A full-face shield worn over safety glasses
A full-face shield worn over safety glasses offers the highest level of protection against the high-velocity flying particles and pervasive dust generated by drilling into masonry. Safety glasses protect the eyes, while the face shield protects the entire face from impact and splashes. CSA Standard Z94.3 recommends this combination for high-hazard tasks.
Question 3: A technician needs to enter a crawl space to inspect a gas line. Atmospheric testing reveals a potentially hazardous atmosphere. What is a critical safety procedure that must be followed according to Ontario's confined space regulations?
- Ensuring a cellphone has a full charge for communication.
- Posting a warning sign outside the crawl space entrance.
- Having a trained attendant stationed outside the space for monitoring and communication. (Correct answer)
- Wearing a simple dust mask to filter the air.
Correct answer: Having a trained attendant stationed outside the space for monitoring and communication.
Ontario Regulation 632/05 requires a trained attendant to be stationed outside a confined space at all times during entry. The attendant's role is to monitor the entrant, maintain communication, and initiate rescue procedures if necessary. This is a non-negotiable part of the confined space entry plan.
Question 4: Before starting maintenance on a gas-fired boiler, the technician must isolate it from the electrical supply. What is the correct procedure to ensure the equipment cannot be accidentally re-energized?
- Turning off the main power switch on the appliance.
- Applying a Lockout/Tagout (LOTO) device to the electrical breaker. (Correct answer)
- Informing other workers in the area not to touch the controls.
- Unplugging the appliance if it has a power cord.
Correct answer: Applying a Lockout/Tagout (LOTO) device to the electrical breaker.
The proper and safest method for isolating electrical energy is to use a Lockout/Tagout (LOTO) procedure. This involves shutting off the breaker, applying a personal lock to prevent it from being turned back on, and attaching a tag to inform others that work is in progress. Simply turning off a switch is insufficient as it can be easily turned back on.
Question 5: While handling pipe sealant and cleaning solvents, a gas technician should consult which document to understand the specific health hazards and required protective measures?
- The CSA B149.1 Installation Code.
- The appliance manufacturer's installation manual.
- The product's Safety Data Sheet (SDS). (Correct answer)
- The TSSA's Gaseous Fuels regulation (O. Reg. 212/01).
Correct answer: The product's Safety Data Sheet (SDS).
The Safety Data Sheet (SDS), a key component of the Workplace Hazardous Materials Information System (WHMIS), provides detailed information about a hazardous product's potential health effects, physical and chemical properties, and safe handling procedures, including required PPE.
Question 6: Which of the following is a primary responsibility of a worker under the Workplace Hazardous Materials Information System (WHMIS)?
- To classify hazardous products and prepare Safety Data Sheets.
- To participate in training, take steps to protect themselves, and report missing labels. (Correct answer)
- To provide personal protective equipment for all workplace hazards.
- To conduct workplace inspections and issue compliance orders.
Correct answer: To participate in training, take steps to protect themselves, and report missing labels.
Under WHMIS, workers have a responsibility to participate in education and training programs, use the information to protect themselves and their coworkers, and report any issues like missing or illegible labels to their employer. Suppliers classify products and create SDSs, while employers are responsible for providing training and PPE.
G3 - Gas Technician Level 3 Workplace Safety and PPE Questions and Answers 1
A gas technician is preparing to service a rooftop unit.
Which of the following PPE is essential for protection against potential falling objects and impact hazards?