why would a fire official not want a sprinkler system bonded per with the nec

[codeworks]

why would a fire official not want a sprinkler system bonded in accordance with the nec ? i can't get an answer other than " i don't want anything on my systems." nec calls for all metal piping in an building likely to become energized to be bonded. i can think of multiple reasons to bond it, like "hot" water coming out of heads onto firefighters or occupants in a fire situation if the sytem becomes energized under flow, and /or an inability to close valves , "or get off of them " once the system is accidently energized and sytem needs work.

 

[fatboy]

Because they are misinterpreting sections in the in the fire code that says various systems can not be used as a grounding method, which has nothing to do with the bonding requirements. We went through it here, fire "inspectors" requiring bonding jumpers to the sprinkler piping system be removed.

 

[fireguy]

because he does not know the codes?

Ask for a code reference.

 

[Francis Vineyard]

It may be in the latest edition of NFPA 13 that defines electrical bonding as allowe. There had been some instances where electrical bonding contributed to galvanic corrosion of underground lines; but bonding served the immediate hazard posed from electrical shock over the threat to the fire line leaking.

http://www.inspectpa.com/forum/showthread.php?6320-Grounding-and-bonding-2-for-the-price-of-one

Francis