Podcast
Questions and Answers
Why may a confined space be dangerous to work in?
Why may a confined space be dangerous to work in?
- There may not be sufficient working space
- Air in the space may be unbreathable due to poisonous gas
- All of the hazards mentioned (correct)
- Temperature and poor ventilation may affect the worker
What must be considered first when planning to carry out work in a confined space?
What must be considered first when planning to carry out work in a confined space?
- Has sufficient manpower been allocated
- Has the job been priced properly
- Have the correct tools been arranged
- Can the work be done from the outside (correct)
When working in a confined space, such as a sewer, what danger may occur?
When working in a confined space, such as a sewer, what danger may occur?
- Boredom
- Build-up of harmful gases (correct)
- Getting wet through
- Not enough time for the job to be done
To determine the safety of the atmosphere in an excavation, which of the following is essential?
To determine the safety of the atmosphere in an excavation, which of the following is essential?
Before entering an excavation to start work, it must first be:
Before entering an excavation to start work, it must first be:
What is the purpose of using a permit to work system?
What is the purpose of using a permit to work system?
Why are young people more at risk on site?
Why are young people more at risk on site?
You have to enter a manhole in which you know there are toxic gases. You have all the PPE but there is no appear to be a rescue plan in place what should you do?
You have to enter a manhole in which you know there are toxic gases. You have all the PPE but there is no appear to be a rescue plan in place what should you do?
You have to enter a manhole in which you believe there could be toxic gases. You have not been provided with any Respiratory Protective Equipment (RPE). What should you do?
You have to enter a manhole in which you believe there could be toxic gases. You have not been provided with any Respiratory Protective Equipment (RPE). What should you do?
While digging a trench, you uncover a length of yellow marker tape at a depth of about 150mm. What does the presence of the marker tape mean?
While digging a trench, you uncover a length of yellow marker tape at a depth of about 150mm. What does the presence of the marker tape mean?
When exposing underground power cables, which method of excavation should you use?
When exposing underground power cables, which method of excavation should you use?
A Cable Avoidance Tool (C.A.T.) and a Genny (generator) can be used successfully to locate underground cables by whom:
A Cable Avoidance Tool (C.A.T.) and a Genny (generator) can be used successfully to locate underground cables by whom:
When working alone:
When working alone:
When do special precautions need to be taken when working near overhead electric power lines?
When do special precautions need to be taken when working near overhead electric power lines?
A mobile plant operator can let you ride in the machine:
A mobile plant operator can let you ride in the machine:
You have to walk across a site several times a day, but have to dodge a lot of site traffic. The first thing you should do is:
You have to walk across a site several times a day, but have to dodge a lot of site traffic. The first thing you should do is:
Flashcards
What makes a confined space dangerous?
What makes a confined space dangerous?
A confined space is a workspace that is completely or partially enclosed, presenting dangers like limited entry/exit, poor ventilation, and potential for hazardous atmospheres.
What's the primary consideration before working in a confined space?
What's the primary consideration before working in a confined space?
The first priority when planning work inside a confined space is to assess if the work can be done safely from outside, eliminating the risks associated with the confined environment.
What danger is common in a confined space like a sewer?
What danger is common in a confined space like a sewer?
Harmful gases, often flammable and suffocating, can accumulate in confined spaces like sewers, posing a serious danger to workers.
How to determine the safety of an excavation's atmosphere?
How to determine the safety of an excavation's atmosphere?
Signup and view all the flashcards
Who inspects an excavation before work?
Who inspects an excavation before work?
Signup and view all the flashcards
What is the purpose of a permit to work system?
What is the purpose of a permit to work system?
Signup and view all the flashcards
Why are young people at higher risk on construction sites?
Why are young people at higher risk on construction sites?
Signup and view all the flashcards
What's essential before entering a confined space with toxic gases?
What's essential before entering a confined space with toxic gases?
Signup and view all the flashcards
What to do when RPE is not available for a confined space?
What to do when RPE is not available for a confined space?
Signup and view all the flashcards
What does yellow marker tape in an excavation mean?
What does yellow marker tape in an excavation mean?
Signup and view all the flashcards
Who can use a CAT and a Genny to locate cables?
Who can use a CAT and a Genny to locate cables?
Signup and view all the flashcards
What's the safest method for exposing underground power cables?
What's the safest method for exposing underground power cables?
Signup and view all the flashcards
When are special precautions necessary near overhead power lines?
When are special precautions necessary near overhead power lines?
Signup and view all the flashcards
What's crucial when working alone?
What's crucial when working alone?
Signup and view all the flashcards
What to do when pedestrian traffic is unsafe on a site?
What to do when pedestrian traffic is unsafe on a site?
Signup and view all the flashcards
When can a plant operator let someone ride in a machine?
When can a plant operator let someone ride in a machine?
Signup and view all the flashcards
Describe a confined space with a large opening.
Describe a confined space with a large opening.
Signup and view all the flashcards
What's an unsafe atmosphere in a confined space?
What's an unsafe atmosphere in a confined space?
Signup and view all the flashcards
What safety measures are needed for confined spaces?
What safety measures are needed for confined spaces?
Signup and view all the flashcards
What's the danger of a high water-table in an excavation?
What's the danger of a high water-table in an excavation?
Signup and view all the flashcards
Identify the hazards of excavation work.
Identify the hazards of excavation work.
Signup and view all the flashcards
What's the danger of a hidden buried cable?
What's the danger of a hidden buried cable?
Signup and view all the flashcards
Describe high-risk areas for electrocution.
Describe high-risk areas for electrocution.
Signup and view all the flashcards
What are safe practices for working alone?
What are safe practices for working alone?
Signup and view all the flashcards
What ensures safe pedestrian traffic on a site?
What ensures safe pedestrian traffic on a site?
Signup and view all the flashcards
What's important for safety on a construction site?
What's important for safety on a construction site?
Signup and view all the flashcards
What are the main dangers of working in a confined space?
What are the main dangers of working in a confined space?
Signup and view all the flashcards
What is the role of competent supervision on a construction site?
What is the role of competent supervision on a construction site?
Signup and view all the flashcards
Study Notes
Confined Space Safety
- Confined spaces are dangerous due to potential hazards like insufficient space, poisonous gases, temperature extremes, and poor ventilation. All these factors can pose risks to workers.
- Planning confined space work must start with determining if the job can be done from outside the space. This will avoid the risks.
- When working in confined spaces, like sewers, workers need to be aware of the risk of harmful gases building up.
- Detecting atmospheric safety in excavations is crucial; using a gas detector is vital to determine if the atmosphere is safe.
- Before entering an excavation, it must be inspected by a competent person to assess hazards, especially wall collapse.
Permit to Work Systems
- Permit to Work systems are written procedures to control certain hazardous work types. They ensure work starts only after site procedures are clarified and understood.
Young Workers in Confined Spaces
- Young workers may be at greater risk due to their inexperience and lack of practical experience. They might not recognize dangers as readily as experienced workers.
Entering Manholes with Toxic Gases
- If there's a chance of toxic gases, enter the manhole with a plan in place, including a rescue plan and adequate rescue equipment readily available.
- If respiratory protective equipment (RPE) isn't provided, immediately inform your supervisor.
- Never enter a confined space without a rescue plan in place and the correct safety equipment.
Trench Excavation and Marker Tape
- Yellow marker tape at a depth of approximately 150mm in a trench signals the presence of buried services (e.g., cables). Proper excavation procedures must be modified.
Cable Avoidance Tools
- Cable Avoidance Tools (CATs) and generators (gennys) are used to locate buried services; usage is restricted to trained individuals. Always ensure the operator has received relevant training.
Excavation Methods and Power Cables
- When uncovering power cables during excavation, proper methods involving a technique like hand-dug excavation or a 360-degree rubber-tyred excavator are recommended.
Overhead Electric Power Lines
- Working near overhead electric power lines demands caution as contact (even close proximity) can lead to electric shock hazards. Work areas that could be near or beneath the power lines need special precautions.
Working Alone vs Teams
- Working alone, especially in potentially hazardous scenarios, requires clear communication with a responsible person to know your location, particularly periodically.
Site Traffic
- When navigating through sites with heavy traffic, prioritize safety by identifying pedestrian routes and keeping well away from vehicles; clear communication with site supervisors can help.
Mobile Plant Rides
- Rides in mobile plant machinery should only be given when there is suitable safe seating provided. Rain or if the machine is not designed to carry passengers are reasons why it should not be utilized.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Related Documents
Description
Section 09