<7. System Delivery Precautions>
7.5 Procedure Instruction Sheet and Rehearsal
Whether delieverying a new system, a system expansion job or a system
modification job, always create a procedure instruction sheet for any site work
required and conduct a rehearsal beforehand.
● Site Procedure Instruction Sheet
A site procedure instruction sheet should be created assuming that the site work is
to be carried out by someone other than the engineer who is in charge of the job.
A description may be obvious to the job engineer but interpreted differently by
another person carrying out the site work. To prevent this, use of ambiguous words
and expressions, which can be interpreted in more than one way, should be avoided
in the procedure instruction sheet.
For instance, the expression “Download to FCN-500” is ambiguous as it does not
clarify whether it should be an offline download or an online download. As another
example, the expression “Start the FCN-500” is also ambiguous as it does not clarify
whether it should be a cold start or a warm start. In some cases, a cold start,
wrongly executed, may cause retain data to be initialized.
● Rehearsal
After creating the procedure instruction sheet, conduct an in-house rehearsal
beforehand. Restore a copy of the site system in-house, and conduct a rehearsal
using the procedure instruction sheet to verify that the instructions are good.
The rehearsal should be carried out by someone other than the engineer who has
created the procedure instruction sheet. This will enable discovery of presumptions
or ambiguous expressions, if any, within the procedure instruction sheet.
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