Steve Braune_yes I know about nfpa 15 but my edition is 1985. Altho,I do not expect significant changes to whatever current edition that may be, I am particularly interested about manufacturers and the rating of their products.
td2k- no I have not contacted Grinell. Info. such as K factors, area of application per head, minimum pressure requirements, heat tolerance(anyword I much temp can such spay nozzle can take before deteroirating) if such nozzle were on a dry riser.
As I recall, bulk propane tanks do not typically require a water spray for fire protection. (This, of course does not prevent you from installing such a system)
Fire protection for propane tanks (and LPG tanks)is discussed in NFPA-58 and 59.
The recommendations of the NFPA people are: 1) based on storage capacity, space the tanks properly....keep them from people and buildings 2) install excess flow check valves to limit the propagation of a blaze.
For a frightening read on a propane tank disaster, review the Herrig Brothers turkey farm fire on
MJCronin-unfortunately fire marshall wants spray nozzles because the tank is located in a somewhat populated rural area where 1)there is a lack of nearby municipal water supply 2)the town relies on a volunteer fire department which has marginal fire fighting equipemnt eventho of the mutual aid available. Also current FSA per NFPA 58 is mentioning it as one possible solution.
I am very much interested in the details of this propane tank installation...
How big is the tank ? How deep is the burial and how did you decide the depth ? Did you refer to any codes, standards, or guidleines for the installation ?
What coatings did you use on the tank ? Was there a
double containment ? How is the area above the tank controlled ?
