Implementing 14001 within existing 9001

When implementing 14001 within existing 9001 should both systems - QMS and EMS be implemented as separate ones with separate documentation, or may EMS be included as one of QMS processes? 

For example, may I have one internal audit procedure, internal audit plan and carried out integrated internal audit for both QMS AND EMS?
Have one Management Review for both systems?
Can I just build one system describing both standards?
What is the common practice for integrated systems – how do you do it? 
(We are planning to implement 27 001 and 20 000 eventually as well…)


Integration of standard management systems, including 9001 and 14001 is not only possible, but also necessary!

The most recent versions of Management Standards have identical structure namely for the integration purposes.
All these makes the integration fairly simple.

While integrating, ‘including EMS as one of QMS processes’ is not the best approach.

It is better to build one system describing both standards.

A good practice is to build integrated systems in two phases:
1) Build an ISO 9001 QMS as a base
2) Build the integrated system using the ‘Fill the gaps’ method

In this case, gaps - are the distinctive sections of the ‘Integrated Management System Manual in compliance with ISO 9001: 2015 and ISO 14001: 2015’ and the expediency of developing additional processes can be summarized in the table:

Further, ISO 27 001, 20 000 systems could be added on.

ISO 9001:2015 Quality Manual Template

ISO 9001:2015 Documents and Templates Collection