What do people think of this definition is it similar to the one in your SOP’s and Procedures.
“Whenever possible software changes should be tested offline prior to installation on the live production plant / system.
When this is not possible, the change should be assessed for its risk to product quality, plant and personal safety
prior to installation. Where the level of change is considered to be low risk, the change may be tested on the live plant /
system without the need to stop routine use / production. for high risk changes the change should be tested when the system plant
is not in routine use.”