Читать книгу Automation of Water Resource Recovery Facilities - Water Environment Federation - Страница 102

It is important to agree on a scope of work with the contractor or system integrator before proceeding with processing of the change order. This will avoid misunderstandings between the contractor and engineer as to what is being provided. In addition, upgrade and expansion work on an operating facility is more time consuming than work on a new facility and requires a lot more coordination with the facility to ensure uninterrupted or minimal effect to operations.