There is no standard orifice for clean agent nozzles. They are sized according to the calculation program specific to that agent. The basic nozzle size matches the pipe size as determined by the program and the orifice sizes are custom drilled to meet the calculation results.
As mentioned...
Did some surfing on the web and found one company that makes plastic (fiberglass) dumpsters meeting ASTM E1354 fire test. That is the claim on the web site and should be verified by test report. Mclure Industries makes these and they have lids that are fusible link actuated.
Was unable to...
What section of the IBC requires separation? I have not been able to find it. The IFC seems to allow them. Here is what it says.
304.3.3 Capacity exceeding 1.5 cubic yards.
Dumpsters and containers with an individual capacity of 1.5 cubic yards (40.5 cubic feet) (1.15 m3) or more shall not...
NFPA 1, UFC, requires dumpsters over 40 gallons in size have lids. If the lid is plastic it has to meet the HRR limit of 300 kw/sq meter in ASTM E 1354, Test Method for Heat and Visible Smoke Release Rates for Materials and Products Using an Oxygen Consumption Calorimeter, or NFPA 271, Standard...