The manufacturer knows risks he is to avoid, mitigate and possibly document. The operator has got hazards. Also hazards need to be avoided, mitigated and documented. Commonly this is the process of Hazard Analysis.
Relevant for this process are on the European Level the Directives for Social Security (examples: Council Directive 89/391/EEC of 12 June 1989 on the introduction of measures to encourage improvements in the safety and health of workers at work, Regulation (EU) 2016/425 of the European Parliament and of the Council of 9 March 2016 on personal protective equipment and repealing Council Directive 89/686/EEC (Text with EEA relevance)…). On the National Level national laws and regulations define the legal framework (examples: Labour Protection Law, Industrial Safety Act, Regulation on Occupational Safety, Regulation on Dangerous Substances…).
In the area of responsibilities for the manufacturer there is a very good recommendation with the Technical Report DIN EN/TR 14121-2 how he should handle his duties of analysing risks and mitigating them.
For the operator, however, there is no such recommendation. It can not hurt though and is no wring doing either if one evaluates and adopts established good systems for the own process.
We have done this and recommend to our customers in the role of the operator to execute their duty Hazard Analysis very similar to the process described in the above mentioned technical report.
Thus it is ensured that nothing is lost sight of and the process is well documented. At last § 6 of the Labour Protection Law demands the Dokumentation der Gefährdungsbeurteilung.