ISA18, Instrument Signals and Alarms

Scope

This committee develops standards, technical reports, and guidelines for alarm systems including annunciators, process automation systems, and the general development, design, installation, and management of alarm systems in the process industries.

Purpose

To establish terminology and practices for alarm systems, including the definition, design, installation, operation, maintenance and modification and work processes recommended to effectively maintain an alarm system over time. .

Current Activities

The committee is focused on the development of the revision of ANSI/ISA-18.1-1979 (R2004), Annunciator Sequences and Specifications and the development of six technical reports for ISA-18.02, Management of Alarm Systems for the Process Industries. The following is a list of the current working groups.

ISA18.1 – WG to revise “Annunciator Sequences and Specifications”
WG1 – Alarm Philosophy
WG2 – Alarm Identification and Rationalization
WG3 - Basic Alarm Design
WG4 – Enhanced and Advanced Alarm Methods
WG5 – Alarm Monitoring, Assessment, and Audit
WG6 - Alarm Design for Batch and Discrete Processes

More information on each working group can be found on the related page.

The committee has wide representation from users, vendors and consultants. Co-Chairs Donald Dunn and Nicholas Sands can provide further information.

If you are interested in participating in one of these groups, please contact one of the co-chairs to express interest.

Next Meeting

The ISA18 committee is scheduled to meet June 14 and 15, 2010 in Summerlin, NV in conjunction with the ISA Summer Leaders Meeting.

Status

The ISA18 committee has been actively working on ANSI/ISA-18.2-2009 since October 2003. The standard was approved by the committee with no negative ballots on April 17, 2009, approved by the ISA Standards and Practices board on June 12, and approved by ANSI on June 23.

In the June 15, 2009 meeting, the committee formed 7 working groups; 6 working on technical reports and 1 working on review of ANSI/ISA-18.1-1979. The working groups reported significant progress during the October 6, 2009 meeting.

Standards

ANSI/ISA-18.1-1979(R2004), Annunciator Sequences and Specifications. This standard is primarily for use with electrical annunciators that call attention to abnormal process conditions by the use of individual illuminated visual displays and audible devices. Annunciators can range from a single annunciator cabinet, to complex annunciator systems with many lamp cabinets and remote logic cabinets. The sequence designations provided can be used to describe basic annunciator sequences and also many sequence variations.

ANSI/ISA-18.2-2009, Management of Alarm Systems in the Process Industries. This standard provides requirements and recomendations for the activities of the alarm management lifecyle. Lifecycle stages include philosophy, identification, rationalization, detail design, implementation, operation, maintenance, monitoring & assessment, management of change, and audit.

Membership

The ISA18 committee is open to new members with an interest in alarm management. The membership form is below.

Related Files

ISA18 Membership Form (Microsoft Word Document)

List of Standards for Committee

Contacts:

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