Hygiene zoning in biscuit manufacturing plant

Hi,

I want to know  a basic guidance in conducting a risk assessment for hygiene zoning in a biscuit manufacturing plant. I would like to know what are mandatory steps to be followed & after declaring what are the minimum requirements to be followed in each zone.

Experts kindly share any template or relevant links. 

Thanks,

Mehreen

Are you looking for any specific GFSI standard?

Here is a good read to get you started:

http://www.ifsqn.com...ne-requirement/