Register Need a course in the next few days? Here are our courses listed chronologically by date. If you’re looking for a course in a week or two, try our Calendar or use the dropdown menus above to find the specific course you need. OSSA Confined Space Entry Add to Cart OSSA Confined Space Monitor/Entry 8:30 am - 4:30 pm $170.00 plus GST We are sorry but registration for this event is now closed. Please contact us if you would like to know if spaces are still available.