Hi, could anyone explain the difference between a COSHH Risk Assessment and a 'Fully worked' COSHH Risk Assessment

Thank you for any replies

https://www.hse.gov.uk/coshh/basics/assessment.htm

No idea where the concept of "Fully Worked" has come from unless this is a method of a customer/client/PC refusing a regurgitated SDS as a COSHH assessement.

I have never heard the term "fully worked COSHH assessment".

There are however two types of document that can validly be called COSHH assessments.

One is a record of the significant findings of the COSHH assessment.  This is ideally a short and easy to read document that tells the user what the hazards are and what they need to do about them.

The other includes a record of how the significant findings were arrived at.  For example what data sources have been consulted and what they say (this may not just be the SDS, but could include chemical databases, accident records, occupational hygiene test results, occupational health reports and so on), what consideration has been given to elimination and substitution, how the choice of specific PPE (type of glove, etc) has been arrived at and so on.

You might consider the second kind a "fully worked" COSHH assessment in that it shows the workings and not just the results.

Edited by user 03 April 2020 10:23:30(UTC)  | Reason: added another example

Typical COSHH assessment:

1. Are any of the substances an Irritant, Harmful, Toxic,  Corrosive

Tick as appropriate

2. Should employees wear suitable PPE YES or NO

By contrast a “fully worked” COSHH assessment looks at

1. What are the hazards to health posed by the substances in question? This should be obtained from a variety of sources not just the SDS. Eg Carbon monoxide in a  garage comes under COSHH.
2. What is the likelihood of exposure to the hazardous substances based ion the task being assessed: you always assess task not substances
3. What is the most likely route of entry of the substances?
4. Are any exposure limits likely to be breached as result on any likely exposure?
5. What are the most effective controls to limit this exposure- clue substituting  the most harmful substances is the best control while giving people basic PPE is the least effective control
6. What additional training, supervision etc   will staff need to enable them to apply the   controls selected?
7. How will the effectiveness of the controls eg face fit testing or LEV  be checked
8. Is there a role for health surveillance?
9. Any emergency procedures if there is a spill or uncontrolled release?

Which is more meaningful?

Perhaps the reference to a 'Fully worked' COSHH Risk Assessment is just someone's way of describing a more involved one which would be undertaken for instance in a process involving the use of  various substances and their subsequent reactions to each other etc.?