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The Alarm Management Handbook - - Bill Hollifield.pdf

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Half Title
Title Page
Copyright
Dedication
In Memoriam
Acknowledgements
Foreword
Introduction
Chapter 1 Alarm Management Best Practices: Highly Condensed
1.1 The Alarm Problem
1.2 People Who Can Help
1.3 The ANSI/ISA-18.2-2009 Alarm Management Standard
1.4 Seven Steps to a Highly Effective Alarm System
1.5 Summary
Chapter 2 The History and Nature of the Alarm Problem
2.1 How Did We Get In This Mess?
2.2 Where Are We Now?
2.3 Regulatory Agencies and Alarm Management
Chapter 3 How Do You Justify Alarm Management?
3.1 Economic Justification of Alarm Management
3.2 Analogy to Advanced Process Control
3.3 Analogy to Safety Systems
3.4 Incident Analysis
3.5 Liability
3.6 Aging Workforce
3.7 Summary
Chapter 4 Common DCS and SCADA Alarm Display Capabilities – and Their Misuse
4.1 DCS and SCADA Alarm System Capabilities
4.2 The Alarm Display
4.3 Custom Graphics – Alarm-Related Guidelines
4.4 The Nature of Alarm Priority
4.5 Alarm Priority and Color
4.6 Alarm Priority and Sound
4.7 Alarm Priority Distribution
4.8 Alarm Priority Distribution and Process Control Capability
Chapter 5 Step 1: The Alarm Philosophy
5.1 The Alarm Philosophy Document
5.2 What Should Be An Alarm?
5.3 The Basic and Proper Principles of Alarming
5.4 Poor Alarm Practices
5.5 Alarm Philosophy Customization
5.6 Specific Alarm Design Considerations
5.7 Alarms Used to Prevent Harm to Personnel
5.8 Alarms from Instrument Malfunctions (Diagnostic Alarms)
5.9 Use and Abuse of Combination Alarms
5.10 Alarm Placement
5.11 Redundant Sensors, Voting, and Shutdown Systems
5.12 Safety System (ESD) Alarm Priority
5.13 Safety System (ESD) Bypass/Testing Alarms
5.14 External Devices Alarms – An Engineering Love Story
5.15 Alarms from Fieldbus - type Devices
5.16 Alarm Generation by Programs
5.17 Alarms to Initiate Manual Tasks
5.18 DCS System Diagnostic Alarms
5.19 Point and Program References to Alarms
5.20 Operator Messaging Systems
Chapter 6 Step 2: Baseline and Benchmarking of Alarm System Performance
6.1 Operator Alarm Handling Capacity
6.2 Operator Span of Control and Multiple Operators
6.3 Alarms Are Not Created Equally
6.4 The History of Alarm Analysis
6.5 Alarm System Key Performance Indicators (KPIs)
6.6 Alarms per Day
6.7 Alarms per Ten Minutes
6.8 Alarm Floods
6.9 Alarms Likely to Have Been Missed
6.10 Most Frequent Alarms
6.11 Alarm Priority Distribution
6.12 Chattering Alarms
6.13 Alarms by Type
6.14 Alarm Suppression
6.15 Stale Alarms
6.16 Changes Requiring Management-of-Change Procedures
6.17 Analyses Involving Alarm Acknowledgement
6.18 The Alarm Management Champion
6.19 Alarm Performance Reports
6.20 Alarm Performance Numbers: Are You a Special Case?
6.21 Alarm Configuration Analysis
6.22 Configured Alarm Priorities by Alarm Type
6.23 Configured Alarm Ratio
6.24 Alarm System Performance Levels
6.25 Specific Alarm System Improvement Plans
6.26 Analysis of Operator Actions
6.27 Controller Mode Changes
6.28 Controller Setpoint Changes
6.29 Overall Operator Change Rate
6.30 Correlation of Operator Actions and Alarms
Chapter 7 Step 3: Alarm Bad Actor Analysis and Solution
7.1 Common Alarm Problems and How to Solve Them
7.2 Expected Results from Bad Actor Resolution
7.3 Chattering and Fleeting Alarms
7.4 Alarm Deadband
7.5 Process Value Filtering and Alarms
7.6 Delay Time Analysis and Alarms
7.7 Other Frequent Alarms
7.8 Suppressed Alarms
7.9 Stale (Long-Standing) Alarms
7.10 Duplicate Alarms
7.11 Nuisance Bad Measurement Alarms
7.12 Summary
Chapter 8 Step 4: Alarm Documentation and Rationalization (D&R)
8.1 D&R Overview
8.2 D&R Participation and Reference Information
8.3 Every Alarm Has a Constituency
8.4 The Alarm Rationalization Grids
8.5 Areas of Impact and Severity of Consequences
8.6 Special Guidelines: Probability
8.7 Special Guidelines: Multiple Failures
8.8 Maximum Time Available for Response and Correction
8.9 Priority Determination Grid
8.10 Critical Priority
8.11 Alarms Specified by Process Hazard Analysis (PHA) Teams
8.12 Safety Interlock Level (SIL) Alarms
8.13 Diagnostic Alarms and Other Special Priorities
8.14 Alarm Setpoint Determination
8.15 Alarm Documentation
8.16 The Master Alarm Database
8.17 Alarm Classification
8.18 After the D&R – Implementation of Changes
8.19 Training
8.20 D&R – Expected Duration, Costs, and Helpful Advice
8.21 Helpful Hints for Conducting a D&R
8.22 Common Action Items from a D&R
8.23 Staged Approaches to Alarm Rationalization
8.24 Staged Alarm Rationalization Methodology Details
8.25 Expected Results from Staged Rationalization
Chapter 9 Step 5: Alarm Auditing and Enforcement
9.1 The Entropy of an Alarm System
9.2 Control System Alarm Change
9.3 The Dangers of Alarm Suppression
9.4 Alarm Auditing and Enforcement (A&E)
Chapter 10 Step 6: Advanced, Real-Time Alarm Solutions
10.1 Application of Advanced Alarm Management Solutions
10.2 Alarm Shelving
10.3 State-Based Alarming
10.4 Guidelines for Implementation of State-Based Alarming
10.5 State Detection Logic
10.6 Recommendations for Shutdown State Alarm Settings
10.7 Alarm Flood Suppression
10.8 Design of a Flood Suppression Strategy
10.9 Operator-Adjustable Alarms
10.10 Operator Alert Systems
10.11 Alarm Handling Software – Write Your Own?
Chapter 11 Step 7: The Control and Maintenance of Alarm System Improvements
11.1 Management of Change of Alarm Systems
11.2 Advanced Alarm Monitoring and KPIs
11.3 Annual Audits
Chapter 12 Understanding and Applying ANSI/ISA-18.2: Management of Alarms for the Process Industries
12.1 Purpose and Scope
12.2 Does ISA-18.2 Apply to You?
12.3 Definitions in ISA 18.2
12.4 Alarm State Transitions
12.5 The Alarm Management Life Cycle
12.6 Life Cycle Stages vs. Activities
12.7 Seven Steps vs. Life Cycle Stages
12.8 The Alarm Philosophy Life Cycle Stage
12.9 Alarm Classification
12.10 Highly Managed Alarms
12.11 The Alarm System Requirements Specification (ASRS)
12.12 The Alarm Identification Life Cycle Stage
12.13 The Alarm Rationalization Life Cycle Stage
12.14 The Basic Alarm Design Life Cycle Stage
12.15 Human-Machine Interface Design for Alarm Systems
12.16 Enhanced and Advanced Alarm Methods
12.17 The Implementation Life Cycle Stage
12.18 The Operation Life Cycle Stage
12.19 The Maintenance Life Cycle Stage
12.20 The Monitoring and Assessment Life Cycle Stage
12.21 The Management of Change Life Cycle Stage
12.22 The Audit Life Cycle Stage
12.23 Summary
Chapter 13 The Future of Alarm Management
13.1 A Grim Reminder
13.2 A Conversation
13.3 A Knowledge Worker
13.4 A Vision for 2020
13.5 Transforming the Role of the Knowledge Worker Operator
13.6 Integrated HMI
13.7 Robust Basic Process Controls
13.8 Comprehensive Alarm Management
13.9 Automation and Information Systems Integrity
13.10 Safe Production Knowledge Retention and Decision Support
13.11 Summary
Appendix 1  The Death of the Lightbox
A1.1 Advantages of a Lightbox
A1.2 Observations
A1.3 Loss of View
A1.4 Alarm Configuration Security
A1.5 Disadvantages of a Lightbox
A1.6 Proper Implementation of a Lightbox with a DCS
A1.7 The Death of a Lightbox
A1.8 Lightbox Rationales
A1.9 What About ISA 18.2 and Lightboxes?
A1.10 Conclusion
Appendix 2  Alarm Data Types
A2.1 Alarm Attribute Changes
A2.2 Records of Incremental Changes
A2.3 Records of Bulk Changes
A2.4 Methodologies for Obtaining Alarm Data
A2.5 Operator Change Events
A2.6 Printer Port or Printer Emulation
A2.7 System Databases or Files
A2.8 OPC
A2.9 Custom Software
Appendix 3  An Example Alarm Philosophy
Appendix 4  Operator Effectiveness
A4.1 The Fundamentals of Operator Effectiveness
A4.2 High Performance HMI (Operator Graphics)
A4.3 Graphics Principles
A4.4 Use a Proper Hierarchy of Graphics
A4.5 Level 1 – Process Area Overview Displays
A4.6 Level 2 – Process Unit Control Displays
A4.7 Level 3 – Process Unit Detail and Support Displays
A4.8 Level 4 – Process Unit Support and Diagnostic Display
A4.9 Trends Are Essential
A4.10 Navigation and Functionality
A4.11 Hardwired Switches
A4.12 Seven Steps for Creating a High Performance HMI
A4.13 Control Loop Performance Optimization
A4.14 Benefits of Robust Controls
A4.15 Seven Steps for Optimizing Control System Performance
References
Index of Terms
PAS, 16055 Space Center Blvd, Suite 600, Houston, TX 77062 © 2006, 2010 by PAS All rights reserved. First edition 2006 Second edition 2010 Printed in the United States of America by 360 Digital Books, Kalamazoo, MI 49009. 18 17 16 15 14 13 12 11 10 1 2 3 4 5 ISBN: 978-0-9778969-3-6 This book, or parts thereof, may not be reproduced in any form without permission. The scanning, uploading, and distribution of this book via the Internet or via any other means without the permission of the publisher is illegal and punishable by law.
For the second edition of this book, my dedication remains the same! my beautiful, patient, and adorable trophy wife of 34 years. For Pam, To the console operator. -Bill - Eddie
In Memoriam Chris Uehlinger 1956 - 2005 In 2005, PAS lost President and Chief Operating Officer, Chris Uehlinger. With his death, PAS has lost a great friend and business partner, and the process controls industry worldwide has lost an admired industry leader and visionary. Chris’ commitment to excellence helped shape the vision of improved process safety and reliability through advanced automation technologies. Chris joined PAS in the spring of 2000 after a long and successful career as a vice president with Honeywell Process Solutions. At PAS, he continued to demonstrate the qualities that made him an exceptional leader: thoughtful and strategic thinking, personable leadership, and an extraordinary ability to grasp and communicate complex technological concepts. Chris' career began at Celanese after he earned his engineering degree from Texas A&I University (now known as Texas A&M University) in Kingsville, Texas. Chris will be greatly missed and fondly remembered. - Eddie Habibi, PAS Founder and CEO
Acknowledgements Many people have significantly contributed to the Alarm Management body of knowledge and deserve recognition and thanks for those contributions. Here are a few of these people. First and foremost, the authors appreciate and acknowledge the efforts and dedication of PAS employees. Their tireless work has resulted in significant advancement of the state of the art of alarm management. Software and work processes have benefited from their leadership in hundreds of successful worldwide alarm management projects. We also greatly appreciate the significant effort, quality of work, and patience Jennifer Hicks demonstrated in supporting and driving the team to deliver this book on a very tight schedule. Since the first edition of this book, the ISA 18.2 Alarm Management standard was completed. This major effort was led by two people that deserve special recognition – the committee chairs Nick Sands of DuPont and Donald Dunn of Aramco. Other alarm management contributors and supporters include Joseph Alford, Peter Andow, Alex Boquiren, John Campbell, Donald Campbell-Brown, Jim Cawood, Mike Clark, Kenneth Emigholz, Ralph Harris, Heinz Janiec, Les Jensen, Lokesh Kalra, Douglas Metzger, Yahya Nazer, Ian Nimmo, Patrick O'Donnell, Douglas Rothenberg, Bill Sheldon, Todd Stauffer, David Strobhar, and Lee Swindler. Organizations are also advancing the cause of alarm management. The American Petroleum Institute is currently working on an Alarm Management Recommended Practice, led by Gary Medley of BP Pipelines. The Electric Power Research Institute (EPRI) has championed the cause of Alarm Management, with leadership provided by Wayne Crawford. And both EEMUA (the Engineering Equipment and Materials User Association), and the Abnormal Situation Management Consortium (ASM®) continue to work on advancing the cause of process safety and proper alarm management.
Chapter Listing Introduction Chapter 1 Alarm Management Best Practices: Highly Condensed Chapter 2 The History and Nature of the Alarm Problem Chapter 3 How Do You Justify Alarm Management? Chapter 4 Common DCS and SCADA Alarm Display Capabilities – and Their Misuse Chapter 5 Step 1: The Alarm Philosophy Chapter 6 Step 2: Baseline and Benchmarking of Alarm System Performance Chapter 7 Step 3: Alarm Bad Actor Analysis and Solution Chapter 8 Step 4: Alarm Documentation and Rationalization Chapter 9 Step 5: Alarm Auditing and Enforcement Chapter 10 Step 6: Advanced, Real-Time Alarm Solutions Chapter 11 Step 7: The Control and Maintenance of Alarm System Improvements Chapter 12 Understanding and Applying ANSI/ISA-18.2: Management of Alarms for the Process Industries Chapter 13 The Future of Alarm Management Appendix 1 The Death of the Lightbox Appendix 2 Alarm Data Types Appendix 3 An Example Alarm Philosophy Appendix 4 Operator Effectiveness References Index of Terms
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