English to Russian Tech/Engineering Engineering: Industrial

Коллеги, подскажите, пожалуйста, что означает
interface
в следующем контексте:
название документа: EXTERNAL INTERFACES DEFINITION & MANAGEMENT PLAN
The purpose of this procedure is to define the interface management process for the PLANT.
For each type of interfaces (process, piping, electrical, control system, civil & structural) a discipline interface coordinator has been appointed in order to follow and provide inputs for the settlement of their interfaces.
The main activities will be:
- Identify interface (and define the criticality if necessary)
- Communicate about required information and corresponding planning
- Monitor progress of interfaces
- Ensure settlement of interface
Follow-up of all interfaces (process, piping, electrical, control system, civil & structural) is performed via Interface Table.
For geographical interfaces, CONTRACTOR will develop Interfacing drawings by discipline.
Interfacing drawings will contain the detailed location relating to the Interface Points.
Interface Point types for aboveground piping
Interface Point at Flange

Заранее спасибо за идеи.
В памяти и на некоторых рисунках к документу подписано "Точка интерфейса".