It's probably a violation of your local fire code to do so.
Technically, the fire code probably requires that there be at least one fire pull for every so many square feet, or so many for every fire control zone, or some other specification like that, and if you happen to have more than the fire code requires, you could probably block one without violating the law. But it's generally never a good idea to block a fire pull station.
What are pull station clearence requirements
No! You can't hang or obstruct a fire alarm pull station at any time. To do so would mean you are breaking Health & Safety Regulations (and would probably invalidate your insurance, should there be a fire).
48" from floor to the middle of the pull station
Your question poses questions of its own. If a fire occurs in a school kitchen the precautions have already been ignored. If a fire does occur and it is under the hood suppression system, pull the fire alarm pull station and the hood suppression pull station on your way out of the building. This alerts the building occupants of the hazard and is a first line approach to dousing the fire. Evacuate and let the fire department do the rest. If you have been properly trained you may choose to use the fire extinguisher. Do so only after pulling the fire alarm pull station to begin evacuation of the school. Use the fire extinguisher by applying the PASS method. Pull the pin, Aim at the base of the fire, Squeeze the handle, and Sweep back and forth until the fire is extinguished. Make certain you are using the correct type of fire extinguisher for the type of fire. You will learn the appropriate types of extinguishers upon taking fire extinguisher training. Good luck!
"Fire station" is typically written as two words.
Coney Island Fire Station Pumping Station was created in 1938.
Los Angeles Fire Department, Fire Station #9. Skidrow
Former Fire Station was created in 1882.
Poppleton Fire Station was created in 1910.
Skowhegan Fire Station was created in 1904.
Wollaston Fire Station was created in 1900.
Calumet Fire Station was created in 1898.