I am responsible for both our QMS and HR/Safety (among other things), and I would like to know if it is appropriate to include our Safety policies, LOTO procedures, Hazard Communication, etc. as part of our controlled documents. We are ISO 13485:2003 Certified, with discussions on becoming ISO 9001:2008 Certified.
Let me ask this...why wouldn't you?
I suggest that for the purposes of a business culture, drop terms like "quality management system" and "safety management sytem". Instead, adopt "business management system" or "<company name>'s management system".
Where is the value in having some procedures follow your document control process while others are outside of the system?
Does your company believe in keeping employees safe and having them return home at the end of the day?
Does your company understand the value of the document control process?
If your answers to above three questions are "there is no value", "yes" and "yes", then perhaps you've answered the question in your original post.