ISA 18 WG4 Enhanced and Advanced Alarm Methods

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ISA 18 WG4Enhanced and Advanced Alarm Methods

• Status Update
• October 5, 2009

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Summary

• Meetings / People
• Process
• Key Discussion Topics
• Review of Technical Report Outline
• Reprise Key Discussion Topics

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Meetings / People

• Meetings Fourth Wednesday each month, 800
  Eastern Time
• July 23, Aug, 26, Sept 23, Sept 30 (extra
  meeting)
• Attendance (mtgs attended)
• Joe Alford, WG6 Co-chair (4)
• John Bogdan (4)
• Lieven Dubois (4)
• Bridgett Fitzpatrick (0)
• Bill Hollifield, WG5 Co-chair (2)
• Robert Hudson (3)
• John Huhman, WG4 Co-chair designate (4)
• Doug Metzger, WG4 Co-chair (4)
• Joules Oudmans (2)
• Nick Sands, ISA 18 Co-chair (4)
• Chris Stearns (3)
• Kim VanCamp (2)
• Bob Weibel (2)

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WG4 Charter

• WG4 Enhanced and Advanced Alarm Methods
• Working group 4 (WG4) is charged with the
  development of Technical Reports and Recommended
  Practices providing guidance on advanced and
  enhanced alarm methods. WG4 focuses on the scope
  of ISA-18.2 clause 12. Enhanced alarm design
  covers guidance on additional logic, programming,
  or modeling used to modify alarm behavior. These
  methods may include dynamic alarming,
  state-based alarming, adaptive alarms,
  logic-based alarming, predictive alarming, as
  well as most of the designed suppression methods.

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Process

• Gather Technical Report Content in three parts
• Part 1 Introduction Purpose, Scope,
  Organization
• Part 2 Problems and Methods
• Prefer to organize by problems, but generally
  following ISA-18 Clause 12 content
• Part 3 Work Process and Alarm Integrity
• (parts may consist of multiple clauses)

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TR Part 2 Problems and Methods

• Data Gathering Format

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Key Discussion Topics

• Definition of Advanced/Enhanced Alarming i.e.,
  the distinction between Basic and Advanced
• Determining factors
• Not Determining factors
• DCS Functionality
• Complexity (particularly PV calculation
  complexity)
• Predictive

Theory
Examples

• Added layer
• Dynamic vs. Static
• Scope
• Added Guidance

Advanced Vs. Basic
Extensive Discussion Review at General Meeting
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Purpose of the Distinction between Basic and
Advanced

• Avoid dropping important topics through the
  cracks
• Make sure important discussions take place in our
  collection of TRs
• Make readers aware of problems to look for
• Methods of solving them
• Important considerations and caveats
• Decide which TR to include the discussion

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Key Discussion Topics

• Complexity does not determine whether an alarm
  strategy is advanced.
• See Examples ltNS-1gt thru ltNS-4gt
• Dynamic vs. Static mechanisms does impact the
  determination of Advanced vs. Basic.
• See Examples ltJA-2Agt for a counter opinion to be
  reviewed.
• Also discuss operator-set alarms
• Remote Notifications to non-operators may be
  considered advanced alarming if necessary for
  continued operations.
• See Examples ltJA-6AgtltJA-6BgtltCS-7gtltCS-9gt

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WG4 Technical Report Outline

• (Part 1) Introduction Purpose, Scope,
  Organization
• (Part 2) Problems and Methods
• Organized by problems generally following ISA-18
  Clause 12 content
• (Part 3) Work Process and Alarm Integrity
• (Parts may consist of multiple clauses)

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Reprise Key Discussion Topics

• Complexity does not determine whether an alarm
  strategy is advanced.
• See Examples ltNS-1gt thru ltNS-4gt
• Dynamic vs. Static mechanisms does impact the
  determination of Advanced vs. Basic.
• See Examples ltJA-2Agt for a counter opinion to be
  reviewed.
• Also discuss operator-set alarms
• Remote Notifications to non-operators may be
  considered advanced alarming if necessary for
  continued operations.
• See Examples ltJA-6AgtltJA-6BgtltCS-7gtltCS-9gt