scope:

This document relates to Human Computer Interface (HCI) systems provided for people operating industrial processes such as chemical plant, power stations, oil refineries etc. It gives guidance on:

• the factors to take into account when designing an HCI for such processes;

• display hierarchies;

• screen display format design;

• control room design.

The objective is to help engineers to develop HCI systems which are more usable and which therefore result in safer and more cost-effective operation of industrial systems. In addition it is intended to help reduce the need for re-engineering of systems after installation.

Purpose

HCI systems now form the essential operator interface to large modern industrial systems. They are utilised in power stations, refineries, chemical plants (continuous and batch), utility distribution centres, and many other places. They provide the vital means by which the operator obtains information on the state of the plant, enters operational parameters, and by which any automatic control action can be overridden and manual control of the plant be taken.

The purpose of this Guide is to help those involved in the design, procurement, operation, maintenance and management of these systems. It is intended to help both in improving existing systems and in developing new facilities during plant construction. It is for use by engineers and managers in both user and contracting organisations. The objective is to make plants more operable and to save money.

This Guide has been written by users in industry. It is based on what some leading companies are doing. The guidance is designed to be practical and usable. The general guidance is directed towards large sophisticated computer-based process systems, but contains much general information on HCI. There is also detailed guidance on specific issues.