Alarm Shelving - Relieve the Symptoms of Nuisance Alarms and create a Peaceful Control Room
Recording Date: August 2018
In an ideal world, every alarm would indicate a malfunction or abnormal condition that required operator action. In the real world, alarms that are irrelevant or annunciate excessively—otherwise known as nuisance alarms— can overload operators with nonessential noise and desensitize them to the importance of alarms (“I can ignore this alarm….”). The presence of nuisance alarms is a common contributor to alarm management incidents.
Alarm shelving provides a way for the operator to manage these nuisance alarms safely and securely. Shelving provides a controlled mechanism for the operator to temporarily remove a nuisance alarm from view until the underlying problem can be addressed. It is such an important tool for alarm handling that it is now required control system functionality per ISA-18.2-2016 and IEC 62682 (Management of Alarm Systems for the Process Industries). As a result, more and more control systems have added this as a standard feature.
About the Presenter:
Todd Stauffer, PE, is responsible for exida’s alarm management products and services (training, consulting, SILAlarm™ rationalization software). He is an editor and voting member of the ISA-18.2 standards committee on alarm management and currently is the co-chair of ISA-18.2’s Working Group 3 (Basic Alarm Design). He is an instructor for ISA’s training class “Introduction to the Management of Alarm Systems”. Todd is also exida’s representative on the EEMUA 191 committee. Todd has experience leading alarm philosophy development workshops for clients and performing alarm philosophy gap analyses. He has published and presented numerous papers on alarm management. Recent works include “Implementing an Effective Alarm Management Plan” and “Benchmarking the Use of Alarms as Safeguards and IPLs”. His article “Don’t be Alarmed: Avoid Unplanned downtime from alarm overload“ was selected as Intech magazine’s best article of the year in 2007.