I'm going to go into Sidney mode.
ISO 9001 says Nothing about safety. ISO 9001 Auditors are not entitled to assess against safety requirements. The bit about work environment includes "needed to achieve conformity to product
requirements." So that is the only obligation on an organisation going for certification to 9k2k.
However, having got the requirements out of the way, as has already been mentioned it is good practice to integrate your systems for safety, health, environment, quality, etc., etc. So by all means include safe systems of work in your QMS work instructions / procedures.
If you want a model for a H & S management system you could do far worse than look at OHSAS 18001.