We are in the process of upgrading our control system in the plant and we were not able to find a proper demolition plan for the existing control system and replacing it with a new one.

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What exactly do you mean by "demolition"?

Do you mean a procedure for removing the old control system? How to disconnect it from the plant wiring, and then how to remove it from it's physical location?

Do you mean what to do with the old control system after it's been disconnected and removed (disposal)?

If "you" are replacing an old control system with a new control system (commonly called "retrofitting" a new control system in place of an old control system), then "you" are responsible for developing the determination, removal, and disposal plan for the old control system, as well as performing the engineering to configure and program the new control system to perform the same functions as the old control system.

If "you" are contracting with a control system integrator or manufacturer or vendor to engineer and install and commission the new control system, including the determination, removal and disposal of the old control system, then "you" are paying them for developing that procedure.

But, it's not really clear who is doing what or what is to be done from your original question.

 

Do you find anything, I'm still searching.

> We are in the process of upgrading our control system in the plant and we were
> not able to find a proper demolition plan for the existing control system and
> replacing it with a new one.

 

My suggestion is to start by just writing down all the things that have to get done. Don't even try to categorize them, or organize them at this point. Just list them. Then look at each item and try and fill in the blanks with all the things that are going to be required to get that particular item done.

Most of us don't have any formal plan for this kind of thing because we have done it enough that we don't really need a plan most of the time. It is only if you have a very large project or major head butting going on that you usually need serious planning.

 

Good morning Eissa

The first thing we did when we upgraded our process was to what the others said. Start by making a list of what has to be done.

The first thing to do is make a decision on the scope of the upgrade PLC to PLC, PLC to DCS, Change the vendor of the system (Siemens to AB, AB to Modicon, et ). What training will be needed to operate and maintain the new system?

Our list was something like this.
1) Check that the SOP for the process is up to date.

2) Check that we have a complete and up to date set of electrical prints.

3) What other components in the system should be part of the upgrade.

4)Create a URS to give to the Integrators to work from.

5)Who will be in charge of the system upgrade selection, validation, installation and operation.

This is a partial list of what we used in the upgrade process of our system.

Regards
Calvin

 

I’ve done this a number of times and it’s never the same. There are some common tasks that need to be accomplished, but there a many details that need to be documented and agreed upon before starting. It must be determined what is to be salvaged and what is to be disposed of and how it is to be disposed. For instance, if the wiring is to be removed and scraped and the hardware recycled, it is easier to cut the wires and remove the parts from the panel than to try and unhook the wires in the panel. The short stubs can be removed quickly when it is done on a bench.

Plan the work and work the plan.