Table of Contents

1 INTRODUCTION
   1.1 Scope
   1.2 Background
   1.3 Field of Application
   1.4 Flare Metering Technologies
2 REFERENCE PUBLICATIONS
3 TERMINOLOGY AND DEFINITIONS
   3.1 Definitions Consistent with Definitions in API MPMS
        Chapter 1
   3.2 Definitions Unique to This Standard
4 APPLICATION CONSIDERATIONS FOR METERS IN FLARE SYSTEMS
   4.1 General Considerations
   4.2 Location of Flare Meters
   4.3 Application-specific Factors Affecting Flow Meter
        Performance
   4.4 Meter Sizing
   4.5 Measurement Uncertainty
   4.6 Flow Meter Selection
   4.7 Specific Meter Considerations
   4.8 Secondary Instrumentation
   4.9 Codes and Standards
   4.10 Maintenance Considerations
   4.11 Record-keeping
5 FACTORY CALIBRATIONS/VERIFICATIONS
   5.1 Flow Meter
   5.2 Pressure and Temperature Instruments
6 COMMISSIONING AND STARTUP
   6.1 Equipment Installation
   6.2 FFMS Commissioning
7 PERIODIC VERIFICATION
   7.1 General
   7.2 Periodic Verification Method - Flow Meter
   7.3 Periodic Verification Method - Secondary Devices
8 RE-EVALUATION OF EXISTING FFMS
   8.1 Re-evaluation Procedure
9 PERFORMANCE TEST PROTOCOL SCOPE
   9.1 General
   9.2 General Performance Test Protocol Requirements
10 UNCERTAINTY AND PROPAGATION OF ERROR
   10.1 Objective
   10.2 Uncertainty Analysis Procedure
   10.3 Simplified Uncertainty Analysis Procedure
   10.4 Uncertainty Estimate for Flare Composition
   10.5 Meter-specific Examples
11 DOCUMENTATION
   11.1 Procedural Documentation
   11.2 Scaling Documentation
   11.3 Other Documentation
   11.4 Management of Change Documentation
APPENDIX A-1 - EXAMPLE PROCESS STREAM DATA SHEET
APPENDIX A-2 - FLARE METER CALCULATIONS
APPENDIX A-3 - COMPRESSIBILITY EFFECTS ON FLARE GAS MEASUREMENT
               UNCERTAINTY
APPENDIX A-4 - GENERAL FLARE DESIGN CONSIDERATIONS
APPENDIX A-5 - GUIDANCE ON MANAGEMENT OF CHANGE PROCESS - FFMS
               SYSTEMS
APPENDIX A-6 - VELOCITY PROFILE AND VELOCITY INTEGRATION
               CONSIDERATIONS FOR FLARE GAS MEASUREMENT

Abstract

Provides measurement of flow to flares, and includes: a) Application considerations. b) Selection criteria and other considerations for flare meters and related instrumentation. c) Installation considerations. d) Limitations of flare measurement technologies. e) Calibration. f) Operation. g) Uncertainty and propagation of error. h) Calculations.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	American Petroleum Institute
ProductNote	Reconfirmed 2007
Pages
ISBN