What is the definition or interpretation of "unclosable openings" in Chapter 6 of NFPA 17?
What criteria is used to determine what door is unclosable opening in a enclosed spray booth. Do the doors required self closing devices or if they don't have the self closing devices can they be considered unclosable openings?
For example an enclosed spray booth for motor vehicles has large doors that open up. These doors could be left opened and will not close automatically. Does this example make this door an unclosable opening?