ohsrm PART A
School of Molecular Bioscience
Hazardous procedure: Disposing of hazardous chemical waste
Step 1. Identify hazards and hazardous jobs
Ref. #
1
- Observing
work
practices
- Reading
labels and
literature
List & describe the hazards and hazardous jobs
Priority
Date
4
17/3/2010
4
17/3/2010
3
Task: Decanting chemical wastes into labeled (name,
date, contents) plastic drums or glass bottles and taking to
room 225 for storage/disposal
Task: Placing solid chemical wastes into labeled (name,
date, contents) Hazardous Waste bags and taking to room
225 for storage/disposal
Hazard: Acute poisoning
3
17/3/2010
4
Hazard: Chronic poisoning
4
17/3/2010
5
Hazard: Sensitisation (allergic reaction)
5
17/3/2010
6
Specific chemicals: Phenol
3
17/3/2010
7
Specific chemicals: Chloroform
4
17/3/2010
8
Specific chemicals: Ethidium bromide
4
17/3/2010
9
Specific chemicals: Acrylamide
4
17/3/2010
10
4
17/3/2010
11
Specific chemicals: Alcohols (methanol, ethanol,
n-propanol, isopropanol, butanol)
Specific chemicals: acetonitrile
3
17/3/2010
12
Specific chemicals: sodium hypochlorite (bleach)
4
17/3/2010
13
Specific chemicals: formaldehyde
3
17/3/2010
14
Specific chemicals: photographic developer
5
17/3/2010
15
Specific chemicals: photographic fixer
5
17/3/2010
2
Step 2. Assign priority for each hazard and hazardous job
For each of the hazards and hazardous jobs listed in Step 1, record a priority rating in the column beside that
hazard/job after referring to the matrix below. The likelihood of injury will be reduced if effective risk control
measures are already in place eg., safe operating equipment and procedures, trained staff etc.
Found a hazard? Think about:
How likely is it to hurt someone?

very likely ++
could happen regularly
How severely could it hurt someone? 
!!! kill or disable
!! several days
off work
! first aid
1
2
3
likely +
could happen occasionally
2
3
4
unlikely could happen, but only rarely
3
4
5
very unlikely -could happen, but probably never will
4
5
6
The numbers show how important it is to do something:
1 do something immediately
6 do something when possible.
PART A completed by: R. Czolij and Nick Coleman
Date:
17/3/2010