Safety Design Form for NFPA Class A Solvent Atmosphere Ovens

This is a Safety Design Form for an NFPA Class A solvent atmosphere oven manufactured by The Grieve Corporation (Serial Number 118984A0117). The oven is located at McCConnell Air Force Base in Kansas (67221) and is owned by 22/931 MXS Composites Building. The equipment is designed and approved exclusively for curing aircraft composites and is not to be used under any other conditions.

The oven operates using gas-fired convection heating and processes materials including carbon/graphite, fiberglass, kevlar, and boron with product weights ranging from 10-500 pounds per batch. The system utilizes methyl ethyl ketone, acetone, alcohol, and methyl propyl ketone as solvents, with 0.20 gallons per batch of solvents and volatiles entering the oven. Operating specifications include a 30-minute purging interval, a baking time of 1-8 hours, and a maximum oven temperature of 500°F. The oven dimensions are 279" x 118" x 133" (2534 cubic feet internal volume), with fresh air intake at 343 standard cubic feet per minute and exhaust air removal at 677 actual cubic feet per minute at 500°F. The form confirms that products of combustion enter the oven and serves as documentation for safe equipment performance between buyer and seller.