Siemens Burner Management Systems
How to invoke the equivalency clause in NFPA standards
When dealing with a prescriptive standards such as the NFPA 85, NFPA 86 or NFPA 87 standards, there are a number of prescribed requirements that often conflict with using modern performance based equipement (i.e. using an external watchdog timer for a Safety PLC, using hardwired relays,etc).
I have challenged these concepts since the start of my career in Industrial automation as I worked for a major manufacturer of combustion equipment and believed there had to be a better way.....
All NFPA standards employ the not so well known..."equivalency" clause, putting the responsibility on the designer to provide the technical argumentation to go outside the intent of the NFPA standards.
I"m proud to announce that I just recieved acceptance for my paper titled “Invoking the Equivalency Clause in NFPA Standards for Designing Compliant Burner Management Systems” will be presented at the 69th Annual Instrumentation Symposium for the Process Industries. The Symposium will be held January 21-23, 2014 in College Station, Texas.