How to Classify a Confined Space
The definition of a confined space can be unclear and confusing. A confined space is not just an area where it is difficult to move.
When deciding the classification of spaces on a work site you should aim to be:
- Consistent Realistic
- Practical (consult employees)
- Knowledgeable (confined space trained)
Before wasting time debating the classification, identify the potential hazards and decide on realistic controls for the space. Then compare the controls you have selected to the requirements of the confined space regulations... they may be the same.
Some sites use the definition "Restrictive Space". This is used to describe an area that may become a confined space under certain conditions.
If confined space planning and preparation seems time consuming or too hard, maybe your site procedures need streamlining. KEEP IT SIMPLE
See Article - aioh_conference_paper
Flammable Gas Under-estimate
A gas monitor may seriously under-estimate actual flammable gas levels. This may occur if the target gas is different to the gas used for calibration. A correction factor can be applied to convert measured to actual levels.
See Worksafe Alberta Bulletin - LEL Correction
When sending your gas monitor for calibration, be sure to notify the service technician which flammable gas to use for calibration. This will vary depending on the environment that the monitor is being used and will ensure the most accurate reading. Some gas monitors allow users to change the flammable gas selection on-site.