14 Questions
What is the primary purpose of a confined space permit?
To enter and work inside a confined space
Why is a safety watch required for welding or other big hot works?
To provide emergency response
What is the typical duration of a confined space permit?
14 days
What is required in addition to a confined space permit for performing hot work inside a confined space?
A hot work permit
What is the purpose of gas testing in confined spaces?
To detect the presence of flammable gases
What is the primary purpose of positive isolation in confined spaces?
To isolate the space from other areas
What is the primary characteristic that defines Cold Work?
It does not involve a source of ignition.
What is the typical color of a Cold Work permit?
Blue
What is the maximum validity period of a Hot Work permit?
One Shift
Why is continuous gas monitoring required for some Cold Work activities?
Because it is dependent on the activity being performed.
What is an example of Hot Work involving a potential source of ignition?
Portable engines
How far away from the work area must gas testing be conducted for Hot Work?
10 to 15 meters
What is required prior to the start of Cold Work?
Only an initial gas test
Why is an initial gas test required for Hot Work?
Because it ensures a safe working environment.
Study Notes
Cold Work
- Any work activity that does not involve a source of ignition
- Examples: bolting and unbolting of pipeline and vessel flanges using hand tools, removal of electrical and instrument equipment that has been de-energized
- Permit color is normally Blue
- Permit can be renewed for 5 Shifts or 2.5 Days (renewal period may vary company to company)
- Some cold work activities may require continuous gas monitoring, depending on the activity
Hot Work
- Any work activity involving a source or potential source of ignition
- Examples: welding, burning, grinding, disk cutting, portable engines, sand blasting, working on electrical/electronic equipments
- Permit color is normally Red
- Permit is valid for only one shift
- Initial gas test and continuous gas monitoring are required
- Gas test must be conducted around the work area about 10 to 15 meters
- Fire extinguisher and water hose must be kept as standby
- Safety watch is required for welding or other big hot works
Confined Space Permit
- Normally permit color is Yellow or Green
- Permit is valid up to 14 days (renewal period may vary company to company)
- Gas test and continuous gas monitoring are required before entry/starting the job
- Confined space procedure must be followed, including positive isolation, gas freeing, ventilation, providing enough lighting, and safety watch
- Confined space permit is only to enter into a confined space, and cold or hot work permit is required based on the activity
Understand the concept of cold work, which involves no source of ignition, and its applications in various industries.
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