alarm management
DESCRIPTION
A presentation on industrial alarm management from ProSys. It has a number of screenshots showing what alarm management software looked like from 1995 till the present day. I hope I can get some of the screenshots from Selective Alarm Suppression (SAS), which was released in 1991, and is apparently the first commercially available alarm management software.TRANSCRIPT
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Alarm Management
2011 July
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Presentation Goals
Brief Introduction
Alarm Management Review
Alarm Management Solution
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About ProSys
ProSys is a leading global provider of process control engineering services and software solutions
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Value to Customer
ProSys focuses on helping our customers operate their processes safely, reliably and efficiently.
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Areas of focus
• We focus on Process Control to help companies experience:
• Increased Production
• Reduced Risk
• Greater Operator Ease-of-use
• Increased Operator Efficiency
• Stable Plant Operations
• Reduced Unplanned Events
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Engineering Services & Software Solutions
Basic & Advanced Control
APC Software
Control Dynamics
Alarm Management
Dynamic Configuration Software
Special Alarm Management Software
AgileOps Software Suite
Human-Machine Interface
Interface Dynamics
Other Engineering Services
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History of Alarm Management
ProSys introduced the first commercially available alarm management solution in 1990. Selective Alarm Suppression
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History of Alarm Management
Dynamic Configuration Software (DCS) in 1995. First Automatic Dynamic Alarm Management software
Special Alarm Management (SAM), was introduced in 1997. First commercial alarm shelving tool.
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History of Alarm Management
DCSv3.0 and SAMv2.1 in 1998 with Windows Interface
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History of Alarm Management
Dynamic Rationalization Toolkit in 1998
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History of Alarm Management
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History of Alarm Management
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History of Alarm Management
Allowed us to dynamically rationalize all alarms
Typically dynamically managed 400-700 alarms per board operator
Largest install base for any dynamic alarm management application
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History of Alarm Management
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History of Alarm Management
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Objective of Alarm Management
• The objective of alarm management is to provide operators a consistent and reliable action event notification interface that supports their efforts to safely and efficiently operate the process
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What is a Quality Alarm?
• An annunciated process condition to which the operator can and must take corrective action in order to return the process to normal and safe operation
Alarm?
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What is a Quality Alarm?
• Every alarm should:
• be clear and relevant to the operator
• indicate an abnormal process condition that has consequences of inaction and a defined response
• be unique
Alarm?
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Normal and Abnormal
• Normal - That which is both planned and expected• Startup
• Shutdown
• Mode switching
• Equipment swapping
• Other planned operating procedures
• Abnormal - That which is unplanned or unexpected• Emergency shutdown
• Equipment failures
• Upstream problems
• Downstream problems
• Other unplanned process transitions
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Alarm Philosophy
• A good alarm philosophy
• Is based on solid principles
• Is time tested
• Recognizes all plant states (especially S/U & S/D)
• Defines work process and methods for continual improvement and maintenance
Alarm
Philosophy
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Alarm Performance Metrics
• Measures of alarm performance
• Average number of alarms per hour, < 6
• Peak alarm rate, < 10 alarms / 10 min
• Percentage of time in flood, < 1%
• Number of alarms presented to the operator not requiring a response
• Number of important alarms missed
Assessment &
Analysis
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Alarm Performance Metrics
• Measuring up
• Do not go overboard with alarm metrics. Focus on providing a reliable and consistent interface for the operator.
Metrics do not replace Alarm System Design
Assessment &
Analysis
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Alarm System Design
Alarm System
Design
• Maintain alarm system documentation including Causes, Consequences, and Actions
• Revise alarm settings and add dynamic capabilities
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Achieving Goals
• To achieve consistency
•Review all points
• What is alarmed? What should be alarmed?
• Alarm Priorities, Trip Points, Digital Alarm States
• To achieve reliability
•Add dynamic behavior
• During upsets, shutdowns, and startups alarm system will continue to perform
• Implement Alarm Shelving Tool
• Maintain alarm system integrity by allowing operators to shelve and remind alarms effectively without affecting critical alarms
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Alarm Summary Transformation
Dynamic Alarm Management
!@#$%&*D
%&*!@#$S
$%&*#@B
1. …
2. …
3. …
4. …
5. …
Alarm & Status Information
Action Item List
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TI213
LI010
AC013
PC022
Dynamic Alarming
• Without dynamic alarming
• Each alarm is stand alone and does not have knowledge of current plant status
• Normal and abnormal conditions alarmed
LI010
PVLO
AC013
PVHI
TI213
PVLO
PC022
PVLOWithout Dynamics
Implementation &
Execution
Heater
S/D
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Dynamic Alarming
• With dynamic alarming
• Change of process state is managed
• Only abnormal conditions alarmed
TI213
LI010
AC013
PC022
LI010
PVLO
AC013
PVHI
TI213
PVLO
PC022
PVLO
With Dynamics
Implementation &
Execution
Heater
S/D
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Dynamic Alarming on a Fired Reboiler
w/o
w/Number
of Total
Alarms
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Contact Information
Telephone: +1-225-291-9591
Website: http://www.prosys.com
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2010 July
Questions?