http://laws-lois.justice.gc.ca/eng/r.../FullText.html
Go to part XIV, see if that helps.
I had to research this for some cranes that we have and it was so long ago I can''t remember what the end result was, but you have leeway to make your own schedule and they tend to point you back to manufacturer's recommended maintenance.
If you can't find what you're looking for, be a bit more specific and I'll try and help.
I'm federally regulated, so I don't know much about variances between provinces.