In reference to NFPA 80, are fire pins acceptable for connecting corridor fire barrier doors?
I think they are to latch A door in place
Do you want to restate the question
I Dig Hardware » Decoded: Less Bottom Rod Fire Exit Hardware (September 2012)
A fire pin replaces the lower latches that are on a pair of doors. Some paired doors require two forms of latching for each door. The lower latches are problems in the field. The doors get hit, knocking out the alignment, and the latches need to be re-aliened. Fire pins were created as an alternative to the lower latches.
All products on a fire door assembly need to pass the NFPA-252; Standard Methods of Fire Tests of Door Assemblies. When the product passes the NFPA-252 test, then a manufacturer needs to have a Certification Body, such as UL, W/H, FM, (UL) certify the product that it is being made exactly the way it passed the test. The manufacturer then is allowed to put the UL approval label on their product. Now the product is considered a Listed product.
The product is then sold to general public. Then the product needs to be installed exactly as the the manufacturer's installation instructions require, according to the NFPA-252.
You need to read the manufacturer's instructions to see if the product you are using was tested and Listed for the purpose that you need it for. If it was, then UL says it can be used.
All fire door assembly products with approval from a nationally recognized certification body, such as UL, are approved to be installed on a fire door assembly for the specific purpose for which it was tested.
It all starts and ends with the NFPA-252. Did it pass or not? Is the product UL Listed?
The NFPA-80 do allows new products.
NFPA-80, 2010, 1.4. Equivalency.
1.4.1 This standard shall not prohibit the development of new, modified, or improved devices that meet the intent of these requirements.
I hope this helps
Chuck Noble , CFI-1, CFPE, FDAI
I am assuming this is a healthcare facility.
The question is, are these doors fire doors or smoke doors? Corridor doors are smoke doors. Compliance to the NFPA-80 is not required NFPA-101, 2012: 126.96.36.199.3
Cross corridor doors are smoke doors.
1 hour fire / smoke barriers are smoke doors. : 8.5.3 Fire Barrier Used as Smoke Barrier. A fire barrier shall be permitted to be used as a smoke barrier, provided that it meets the requirements of Section 8.5 ( Smoke Barriers).
In health care a 1-3/4 solid bonded wood door (not labeled for fire) is acceptable. along with no latching hardware(Fire Pins), and non listed protection plates. Because they are SMOKE DOORS.
Also, using the fully sprinkled option Hazardous Areas are smoke partition doors even though there is a 1 hour fire wall. Read NFPA-101, 2012: 188.8.131.52.2
The bottom fire pins are held retracted by a piece that will melt in a fire condition. Once the fire reaches the pair of doors and the heat rises sufficiently, the pin will pop out and engage the other leaf of the pair to keep the doors aligned for the duration of the fire rating. Since this only occurs once fire has reached the pair of doors, egress is not an issue. They are also only designed to keep the doors aligned during the fire, which exerts a limited amount of force on the pins. If fire/rescue personnel need through that opening, a good swift kick or battering ram will do the trick. That's no different from the primary latching mechanism (lock, exit device). It only has to keep the door(s) closed during the fire. It doesn't have to function afterward. The pins are secondary to the primary, rated latching mechanism.
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