Production/ Operation plan: The production/ Operation plan should include strategies for the following parameters ; Location and reasons for selecting the location ; Physical layout ; Cost and availability of machinery, equipments, raw material ; List of suppliers and, if possible, distributors ; Cost of manufacturing ; Quality management ; Production scheduling, capacity management and inventory management ; Changes in above in the case of expansion of business.
I say that because of course you need to be careful with commercially sensitive ideas, as you do not want to pass your plan on to someone in the pub who then starts your idea before you across the road.
Describe the manufacturing or operating process and associated costs. Contain believable finical projections, with key data explained and documented.
It could be, for example, the risk of a change in the economic environment - what are your contingency plans for that in terms of dealing with such a situation? There may be many other risks as well specific to your particular sphere of operation, but that ability to plan ahead for all scenarios makes for a robust business plan.