Glossary

Process control is a statistics and engineering discipline that deals with architectures, mechanisms, and algorithms for controlling the output of a specific process.
See http://en.wikipedia.org/wiki/Process_control

OLE (Object-Linking and Embedding) for Process Control is an open standards specification for the communication of real-time plant data between control devices from different manufacturers.
See http://en.wikipedia.org/wiki/OLE_for_process_control

Pipeline pigs are devices that are inserted into and travel throughout the length of a pipeline driven by a product flow. They were originally developed to remove deposits which could obstruct or retard flow through a pipeline. Today pigs are used during all phases in the life of a pipeline for many different reasons.
See http://www.ppsa-online.com

A programmable logic controller or programmable controller is a digital computer used for automation of industrial processes. Programs to control machine operation are typically stored in battery-backed or non-volatile memory. Output results must be produced in response to input conditions within a bounded time, otherwise unintended operation will result.
See http://en.wikipedia.org/wiki/Programmable_logic_controller

A Supervisory Control And Data Acquisition system collects data and performs non-critical control. Some systems are called SCADA despite only performing data acquisition and not control.
See http://en.wikipedia.org/wiki/SCADA

A tag is a data point in a data source, usually arranged in a hierarchy. OPC and Tango are data source standards.

Tango is an object oriented distributed control system using CORBA (Common Object Request Broker Architecture).
See http://www.tango-controls.org

A distributed control system (DCS) refers to a control system usually of a manufacturing system, process or any kind of dynamic system, in which the controller elements are not central in location (like the brain) but are distributed throughout the system with each component sub-system controlled by one or more controllers. The entire system of controllers is connected by networks for communication and monitoring.

See http://en.wikipedia.org/wiki/Distributed_control_system

A Computerized maintenance management system is a software package that maintains a computer database of information about an organization’s maintenance operations. This information is intended to help maintenance workers do their jobs more effectively (for example, determining which machines require maintenance and which storerooms contain the spare parts they need) and to help management make informed decisions (for example, calculating the cost of machine breakdown repair versus preventive maintenance for each machine, possibly leading to better allocation of resources). CMMS data may also be used to verify regulatory compliance.

See http://en.wikipedia.org/wiki/Computerized_maintenance_management_system

FS: Functional Specification
URS: User Requirement Specification
DDS: Detailed Design Specification
FAT: Factory Acceptance Testing
SAT: Site Acceptance Testing

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