May 25 2015

Door to Medical Gas Storage Room

Category: Doors,Medical Gas,Questions and Answers,StorageBKeyes @ 1:00 am

Q: I have an existing medical gas storage room in an outpatient surgery center that was constructed with 1-hour barriers and ¾ hour fire rated door. A surveyor cited me because he says the door has to be constructed of non-combustible or limited combustible materials. The door that is installed is a high pressure decorative laminate with a bonded agri-fiber core with a 45 minute fire resistance rating. I maintain that doors are exempted from the noncombustible/limited-combustible provision. Who’s correct?

A: One scenario that the surveyor may hold you accountable to is medical gas systems in ambulatory care occupancies are regulated by the Life Safety Code, and not by NFPA 99. The Life Safety Code (2000 edition) would look at medical gas room as a hazardous room, and for ambulatory care occupancies, a hazardous room compares their level of hazard to their surrounding area. The section that regulates hazards in ambulatory care occupancies is section 20/21.3.2 which refers you to 38/39.3.2, which in turn refers you to section 8.4. Section 8.4 essentially says any area with a higher level of hazard than the surrounding area needs to be protected with fire protection sprinklers, or 1-hour fire rated barriers. Section requires a 1-hour fire rated barrier to have at least a ¾ hour fire rated door as long as the fire barrier is not used as a vertical opening (such as a rated shaft) or an exit enclosure (such as a stairwell). Hopefully, you don’t have the med gas room in a stairwell, so a properly labeled ¾ hour rated doors is acceptable, and in this scenario I would say the surveyor is mistaken. However, if the surveyor requires that you comply with NFPA 99 in regards to medical gas systems, then that is an entirely different situation. Section 4- (a) 11 (a) of the 1999 edition of NFPA 99 requires doors to be constructed of non-combustible or limited combustible materials. If the 45-minute fire rated door that you have is laminated with limited combustible materials, then it would not be compliant with NFPA 99 (1999 edition), and I would say the surveyor is correct. Section 3.3.118 in the Life Safety Code defines what limited combustible materials are. I suggest you contact the manufacturer of the door and ask them to produce documentation whether or not the door meets the heat values stipulated in section 3.3.118, that may qualify the door as being constructed with limited combustible materials. Now, on another point of view, if the surveyor requires you to comply with NFPA 99, 2005 edition, the door to this room still has to be constructed from non-combustible or limited combustible materials, but it is no longer permitted to be ¾ hour fire rated, but must be 1-hour fire rated, according to section The 2012 edition of NFPA 99 has the same requirement.