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The minimum width of a doorway in a means of egress to accommodate a person in a wheelchair is 32 inches (813 mm).This is based on the requirements of the Americans with Disabilities Act (ADA) and the International Building Code (IBC), which both specify that doors in a path of egress and doors on an accessible route must have a clear opening width of at least 32 inches (813 mm)12. This width allows enough space for a person in a wheelchair to maneuver through the doorway without difficulty. A wider doorway may be preferable for some types of wheelchairs or other assistive devices, but 32 inches (813 mm) is the minimum standard for accessibility and safety.References:DECODED: Calculating the Egress Width of Door Openings - I Dig Hardware;Digital Codes.

OSHA requires fire fighter training in hazardous materials, respiratory protection, and communicable diseases. According to OSHA standards, fire fighters must receive annual training in hazardous materials and infectious diseases, and initial and periodic training in respiratory protection. These topics are essential for fire fighters to protect themselves and others from exposure to harmful substances and pathogens.

References:OSHA training requirements for volunteer fire company personnel;What are the Current OSHA/PESH Training Requirement for Firefighters: A Review;Training requirements for firefighters;Training Requirements in OSHA Standards

Wet chemical extinguishing agents, such as potassium acetate and potassium citrate, when sprayed on a grease fire, extinguish the fire by smothering and cooling. The wet chemical agent reacts with the hot grease and forms a layer of soap-like foam on the surface of the fat, which acts as an insulation between the hot grease and the atmosphere, preventing the escape of combustible vapors and oxygen supply.The wet chemical agent also absorbs heat from the grease and lowers its temperature below the ignition point12

References:

• What is the Difference Between a Wet and Dry Chemical Fire …
• Wet Chemical (Class K) Fire Extinguisher - Portable - WFX

According to the web search results, titanium is the pure metal in its solid form in oxygen that has the highest ignition temperature in degrees Fahrenheit.The spontaneous-ignition temperature of titanium in the solid phase (below melting) is about 3020°F (1660°C)1.Aluminum, potassium, and zirconium have lower ignition temperatures in the solid phase, ranging from 1292°F (700°C) to 1652°F (900°C)23.References:

• IGNITION OF METALS IN HIGH PRESSURE OXYGEN2
• Combustion of Metals in Oxygen-Enriched Atmospheres3
• High-temperature oxidation and ignition of metals1