AGA XK0101:2001
AGA XK0101:2001 Purging Principles And Practice Provides guidelines for maintaining safe atmospheres inside pipes, holders, and other facilities that are to be purged into service or taken out of service.
Table of Contents
CHAPTER1-GENERALINFORMATIONSECTION
1.1Introduction
1.2GlossaryofTerms
1.3FactorsAffectingPurging
1.4Supervision,Personnel,andPlanning
1.5Isolation
1.6SourcesofIgnition
1.7VentPipesforPurging
CHAPTER2-CONTROLOFPURGING
2.1Introduction
2.2CautionaryNote
2.3LimitsofFlammabilityofGasMixtures
2.4End-PointsforPurging
2.5PurgingFacilitiesIntoService
2.6PurgingFacilitiesOutofService
2.7HoldingPurge
2.8PurgingProgressCharts
CHAPTER3-GASANALYSISANDINSTRUMENTATION
3.1Introduction
3.2Sampling
3.3GasDetectionandMonitoringInstruments
3.4SpecificGravityDetermination
3.5UseofInstrumentsforVerifyingPurgingand
End-Points
3.6MoistureMeasurement
3.7FlowMeters
3.8TestingofGasesHazardoustoHealth
3.9DetectionandMeasurementofHazardousGases
CHAPTER4-INERTPURGEMEDIA
4.1Introduction
4.2General
4.3CommercialNitrogenandCarbonDioxide
4.4InertGasGenerators
4.5DieselExhaustEngines
4.6Steam
4.7Water
CHAPTER5-NATURALGASTRANSMISSIONANDDISTRIBUTIONPIPE
5.1Introduction
5.2SafetyPrecautions
5.3TypicalPurgingProceduresDirectDisplacementof
CombustibleGasorAir
5.4InertPurgebyCompleteFillingwithInertGas
5.5InertPurgeUsingSlugtoSeparateMediaBeing
Interchanged
CHAPTER6-LIQUEFIEDNATURALGASFACILITIES
6.1Introduction
6.2LNGMetalTanks
6.3LNGPre-stressedConcreteTanksPurgingintoService
6.4LNGPlantPipingandProcessEquipment
6.5ShopFabricatedLNGPressureTanks
6.6LNGTransports
CHAPTER7-LIQUEFIEDPETROLEUMGASFACILITIES
7.1Introduction
7.2InertingMedia
7.3DescriptionofLPGFacilitiesRequiringPurging
7.4Vents,Piping,andValves
7.5PhysicalPropertiesofLP-Gases
7.6DispositionofLPGLiquidsandVapor
7.7PurgingPipingandEquipmentOutofService
7.8PurgingPressurizedStorageContainersOutofService
7.9PurgingRefrigeratedStorageContainersOutof
Service
7.10PurgingLPGasPipingandEquipmentIntoService
7.11PurgingPressurizedStorageContainersIntoService
7.12PurgingRefrigeratedorSemi-RefrigeratedContainers