What goes in a fire alarm drawing package: the NFPA 72 minimum
Floor plans, risers, calcs and the sequence of operation. What Chapter 7 expects on every system, and where it has to live once the job is done.
Every fire alarm system carries a documentation package. That goes for new systems and existing ones, and an addition or alteration to an existing system pulls the same requirement. NFPA 72 Chapter 7 sets out what is in it. This is the minimum, in plain English, with the things that go missing most often called out.
The minimum package
At a minimum the package covers:
- A written description of the system
- Riser diagrams
- Floor plans showing the devices and the control equipment
- The sequence of operation
- Manufacturer data sheets and installation instructions
- Battery calculations and voltage drop calculations
- The record of completion
- The inspection and testing records
- A copy of the site specific software
- The record drawings
From the field
Read that list against what is actually in the cabinet at the panel. It is rarely all there.
What the floor plans have to show
Floor plans are drawn to scale and show north, the use of each room, walls and doors, where every device and piece of control equipment sits, the riser locations, the primary power disconnect, and the interfaces to other building systems.
Where automatic detection is proposed, the drawings also identify ceilings over 10 feet and the ceiling geometry, including beams and solid joists. Ceiling height and geometry change detector spacing, so a flat drawing of a beamed ceiling hides a design problem.
Symbols and the name on the drawings
Fire alarm drawings use the standard fire safety symbols from NFPA 170 unless the AHJ accepts something else. House symbols on a submittal are fine right up until the AHJ says they are not.
The person responsible for the system layout is named on the design documents, with contact information. Somebody owns the design, and the drawings should say who.
The sequence of operation
The package includes a sequence of operation, either as an input and output matrix or as a written narrative, describing what every input causes to happen. Without it you cannot test the system, because you do not know what it is supposed to do.
Record drawings are not the design drawings
Record drawings show the system as it was actually installed, not as it was first proposed, and they are updated when the system changes. Over years of small additions the drawings and the panel drift apart. Comparing the device count on the drawing with the device count in the panel is a quick way to find out how far.
What the owner gets at acceptance
On final acceptance the owner receives the owner manual, the record drawings, the completed record of completion, and a record copy of the site specific software. Handing over a binder and keeping the program on a laptop does not cover it.
Where it all lives
Every new system gets a documentation cabinet at the control unit, or at another approved location on the premises. It is sized to hold everything, labelled SYSTEM RECORD DOCUMENTS, and only authorized personnel get into it. If the cabinet is not beside the panel, its location is identified at the panel.
None of the record documentation is stored inside the control unit itself.
From the field
Three different findings: no cabinet, an empty cabinet, and the records folded up inside the panel door. The last one is where they usually end up.
Keep reading
Emergency lighting testing: the monthly and annual tests NFPA 101 asks for
The 30 second monthly test, the 90 minute annual, and why a wall of self testing units still needs somebody to look at it.
Spot smoke detector spacing and placement: the NFPA 72 basics
A 30 foot grid is where layout starts, not where it ends. The rules that decide whether a corner, a partitioned office or a hidden detector is covered.
Fire extinguisher inspections: the owner's monthly look and the service visit
The monthly check is the owner's job, and it is the one most often not happening at all. What NFPA 10 asks for, from placement to hydro.