An operator can act on six alarms an hour. Most control rooms see far more. Cerasus applies the ISA-18.2 lifecycle — philosophy, rationalisation, master alarm database and monitoring — so every alarm that remains is one the operator needs.
Alarm rationalisation is the systematic review of every configured alarm against the alarm philosophy: does it indicate an abnormal situation that needs operator action? What is the consequence, the response and the time available? Each retained alarm gets a documented priority, set-point and rationale in the Master Alarm Database (MADB).
Documentation & Rationalisation (D&R) is stage 3 of the ISA-18.2 lifecycle and is where alarm floods, standing alarms and nuisance alarms are actually removed.
Site APD per ISA-18.2 Clause 6 with priority matrix and KPIs.
Alarm rate, floods, standing and chattering alarms from event logs against EEMUA 191 targets.
Facilitated, tag-by-tag D&R with operations, engineering and control.
MADB with cause, consequence, response, time-to-respond, priority and set-point.
DCS configuration changes, state-based alarming and MOC for alarms.
Ongoing KPI reporting and quarterly reviews.
Write or update the alarm philosophy and priority matrix.
Analyse alarm logs; find bad actors and floods.
Workshops to classify, prioritise and document every alarm.
Configure the DCS; track KPIs against targets.
ANSI/ISA-18.2Management of alarm systems for the process industriesOSHA 29 CFR 1910.119(d)(2) & (f)PSM — safe upper/lower limits and consequences of deviation in operating proceduresIEC 62682International adoption of ISA-18.2EEMUA 191Alarm systems — guide to design, management and procurementISA-TR18.2.2 – .7Technical reports: identification, rationalisation, enhanced alarmingNAMUR NA 102Alarm managementISA-101HMI design for alarm presentationSend a short brief — plant, service of interest and what you need to achieve — and a Cerasus engineer will respond with a proposed scope and next steps.
Prefer email or phone? sales@cerasus.ai · +974 5506 2743