1、Inspection of Pressure-relieving DevicesAPI RECOMMENDED PRACTICE 576 FOURTH EDITION,APRIL 2017Special NotesAPI publications necessarily address problems of a general nature.With respect to particular circumstances,local,state,and federal laws and regulations should be reviewed.Neither API nor any of
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15、220 L Street,NW,Washington,DC 20005.Suggested revisions are invited and should be submitted to the Standards Department,API,1220 L Street,NW,Washington,DC 20005,standardsapi.org.iiiContentsPage1Scope.12Normative References .13Terms and Definitions.24Pressure-relieving Devices .44.1General.44.2Pressu
16、re-relief Valve.44.3Direct-acting Pressure-relief Valve.64.4Pilot-operated Pressure-relief Valves.104.5Rupture Disk Device.114.6Pin-actuated Devices .225Causes of Improper Performance.235.1Corrosion.235.2Damaged Seating Surfaces.275.3Failed Springs.285.4Improper Setting and Adjustment.305.5Plugging and Fouling.305.6Galling.345.7Misapplication of Materials .345.8Improper Location,History,or Identification.345.9Improper Handling.345.10 Improper Differential Between Operating and Set Pressures.375.