Sorry to hear about the incident and the instructor.

There are several resources (EPA. FEMA) that can be used as template to develop your plan.

Consider the following items when developing the plan as the emergency could be associated with:

a.       spill ( I.e. acid, alkaline solution. dust) ,or

b.      vapor release of toxic or flammable

c.       fire

d.      other  

The following are some times that should be considered when developing a emergency plan

1)      fire protection equipment

a)      fire protection system " deluge or sprinkler" operability and activation

b)      extinguishers

c)      fire blankets

2)      physical lay- out of the facility exit, evacuation routes

3)      power supplies

4)      identification of chemical ( reagents, compressed gasses)

i)        storage and handling of hazardous materials

ii)      identification of the hazards

5)      personnel training -  recommend to train personnel to

i)        First Responder Awareness  (FRA) level

ii)      First Responder Operations (FRO) level

6)      Entry control authorize and nor authorize personnel

7)      Security

8)      Supporting personnel and or organizations

9)      Emergency notification protocol

10)  Emergency call out list