One of the most important aspects of an on-site risk evaluation is to assure that critical fire protection is maintained. The visit typically begins with a trip to the roof of the highest building at a location to review the relationships of buildings to one another and to evaluate the fire spread potential from the buildings outside the property. Roofs are examined for structural weaknesses that would make them susceptible to wind damage, leakage or collapse. The evaluation continues within the plant to determine the adequacy of fire protection, the condition and maintenance of equipment, and the adequacy of protection against special hazards such as dust, flammable liquids or various other chemicals.
Special attention is paid to sprinkler control valves to be sure that they are fully open.
Water flow alarm tests and sprinkler system design are also reviewed for vulnerabilities.