NR 666.111(3)(c)1.1. Generate extreme heat or pressure, fire, explosion or violent reaction. NR 666.111(3)(c)2.2. Produce uncontrolled toxic mists, fumes, dusts or gases in sufficient quantities to threaten human health. NR 666.111(3)(c)3.3. Produce uncontrolled flammable fumes or gases in sufficient quantities to pose a risk of fire or explosions. NR 666.111(3)(c)4.4. Damage the structural integrity of the container or direct transfer equipment containing the waste. NR 666.111(3)(d)(d) Hazardous waste may not be placed in direct transfer equipment, if it could cause the equipment or its secondary containment system to rupture, leak, corrode or otherwise fail. NR 666.111(3)(e)(e) The owner or operator of the facility shall use appropriate controls and practices to prevent spills and overflows from the direct transfer equipment or its secondary containment systems. These include, at a minimum, all of the following: NR 666.111(3)(e)1.1. Spill prevention controls (e.g., check valves, dry discount couplings). NR 666.111(3)(e)2.2. Automatic waste feed cutoff to use if a leak or spill occurs from the direct transfer equipment. NR 666.111(4)(4) Areas where direct transfer vehicles (containers) are located. Applying the definition of container under this section, owners and operators shall comply with all of the following requirements: NR 666.111(4)(b)(b) The use and management requirements of subch. I of ch. NR 665, except for ss. NR 665.0170 and 665.0174, and except that in lieu of the special requirements of s. NR 665.0176 for ignitable or reactive waste, the owner or operator may comply with the requirements for the maintenance of protective distances between the waste management area and any public ways, streets, alleys, or an adjacent property line that can be built upon as required in Tables 2-1 to 2-6 of the National Fire Protection Association’s (NFPA) “Flammable and Combustible Liquids Code,” (1977 or 1981), incorporated by reference in s. NR 660.11. The owner or operator shall obtain and keep on file at the facility a written certification by the local fire marshal that the installation meets the subject NFPA codes. NR 666.111(5)(5) Direct transfer equipment. Direct transfer equipment shall meet all of the following requirements: NR 666.111(5)(a)1.1. For all new direct transfer equipment, prior to their being put into service. NR 666.111(5)(a)2.2. For existing direct transfer equipment within 2 years after August 21, 1991. NR 666.111(5)(b)(b) Requirements prior to meeting secondary containment requirements. NR 666.111(5)(b)1.1. For existing direct transfer equipment that does not have secondary containment, the owner or operator shall determine whether the equipment is leaking or is unfit for use. The owner or operator shall obtain and keep on file at the facility a written assessment reviewed and certified by a qualified, registered professional engineer in accordance with s. NR 670.011 that attests to the equipment’s integrity by August 21, 1992. NR 666.111(5)(b)2.2. The assessment under subd. 1. shall determine whether the direct transfer equipment is adequately designed and has sufficient structural strength and compatibility with the wastes to be transferred to ensure that it will not collapse, rupture or fail. At a minimum, this assessment shall consider all of the following: NR 666.111(5)(b)2.a.a. Design standards, if available, according to which the direct transfer equipment was constructed. NR 666.111(5)(b)2.d.d. Documented age of the equipment, if available (otherwise, an estimate of the age). NR 666.111(5)(b)2.e.e. Results of a leak test or other integrity examination such that the effects of temperature variations, vapor pockets, cracks, leaks, corrosion and erosion are accounted for. NR 666.111(5)(b)3.3. If, as a result of the assessment specified above, the direct transfer equipment is found to be leaking or unfit for use, the owner or operator shall comply with s. NR 665.0196 (1) and (2). NR 666.111(5)(c)1.1. The owner or operator shall inspect at least once each operating hour when hazardous waste is being transferred from the transport vehicle (container) to the boiler or industrial furnace all of the following: