Simultaneous Operations - referred to here as SimOps - occur when two or more potentially conflicting activities or process operations are being coordinated in the same location at the same time.
SimOps often occur when multiple contractors and/or a large multi-disciplinary workforce is working at a single location and in close proximity in space and time.
You are particularly likely to find SimOps whenever construction or major maintenance work is being done within a "live" process area of an existing facility.
You'll frequently find this when major expansion construction projects are underway; when new equipment is being "tied-in" to an existing plant; or during major shut-downs.
Other examples of SimOps include work involving the use of cranes over the top of live flow lines in a gas plant; or a situation where a diving vessel is working within the exclusion zone surrounding a offshore oil production platform.
Whenever a situation involving SimOps is identified, it is important that all relevant and involved parties come together in order to develop an appropriate hazard and risk management plan.
A useful guide to SimOps planning has been developed by our good friends at IMCA and it is available by clicking here.