electrical

Upon indication of any unusual performance of the electrical equipment or the experimental circuit, turn off all power and unplug power supply. "If it smells, pull the plug."
Avoid contact of wet materials with circuit. Do not work with wet hands or clothes.
When checking an operating circuit keep one hand either in your pocket or behind your back. Also, remove all jewelry.
These simple actions will reduce the risk, if you receive a shock, of electrical current passing through the heart.
Maintain a work space clear of extraneous material such as books, papers and clothes, clean for at least one foot beyond the periphery of the operating circuit.
Never change wiring with circuit plugged into power supply.
Never plug leads into power source unless they are connected to an established circuit.
A special rule for wet cells: they should be placed on a piece of non-conducting material.
Check circuits for proper grounding with respect to the power.

Fire:

Turn off power source and unplug.
Use foam extinguisher or sand to put fire out. Never use water.
When fire is extinguished, check circuit to determine cause.
Do not turn on circuit until cause of fire has been established and the fault corrected.
Report to Safety Officer.