In a recent Q&A on the FacilityCare website, consultant Brad Keyes answered a question about liquid oxygen transfilling operations.
Q: We have a mechanical room door that is ¾-hour fire-rated. The mechanical room is a 10-by-10-foot room with two electrical panels and a small gas-fired heating unit. The metal door frame does not have a rating label on it. Does the frame need to be ¾-hour rated?
A: Anytime you have a fire-rated door assembly, the frame needs to be labeled as a fire-rated frame. Typically the manufacturers of door frames do not label them in the same way a fire door is labeled, identifying the hourly rating of the frame.