Office of Security, Safety and Risk Management
Chemical Hygiene Plan
A5. PRIOR APPROVAL
Employees, other than faculty, must obtain prior approval to proceed with a laboratory task from the employer or his or her designee whenever:
1. A new laboratory procedure or test is to be carried out.
2. It is likely that toxic limit concentrations could be exceeded or that other harm is likely.
3. There is a change in a procedure or test, even if it is very similar to prior practices. "Change in a procedure or test" means:
a. A significant increase or decrease in the amount of one or more chemicals used.
b. A substitution or deletion of any of the chemicals in a procedure.
c. Any change in other conditions under which the procedure is to be conducted.
4. There is a failure of any of the equipment used in the process, especially of safeguards such as fume hoods or clamped apparatus.
5. There are unexpected results.
6. Members of the laboratory staff become ill, suspect that they or others have been exposed, or otherwise suspect a failure of any safeguards.