Fires in Restaurant Exhaust Hoods & Ducts Water-Wash Systems
Does anyone have any information or case studies on fires in restaurants or commercial kitchens where the fire spread into the hood and duct? More specifically, I am looking for failures involving water-wash/continuous water-wash type hoods where the water-wash feature was non-operational or disabled at the time of the fire, or a falure altogether allowing a cooking appliance fire (fryer, grill, etc.) to spread into the hood and duct.
Our jurisdiction is fighting a disagreement on the importance of proper maintenance of Water-Wash hoods. We have a few Water-Wash Hoods in our jurisdiction that have NEVER work properly since new due to poor installation, compounded by years of neglect and poor/no maintenance. They're claiming that we are "over-reacting" and they want us to show where water-wash hood failures led to large loss fires in these types of systems.
To explain a little more, we are a Federal Agency on a Military Installation, so those politics come into play.
A long search of Google didn't yield any results.