Safety Relief Valves: Inspection, Operation and Troubleshooting

THE WORKSHOP

This workshop is structured so that the inspection and maintenance personnel will benefit most from the first two days and the third day will also benefit pressure vessel engineers and system designers.

A safety or safety relief valve can be considered the most important single safety device on a boiler, piping, pipeline or pressure vessel. If it fails to function in the manner for which it was intended and an overpressure condition develops, the result could be catastrophic.

Like all mechanical devices, pressure relief valves require periodic maintenance and repair. To properly carry out repairs, it is essential that the work be done by trained personnel under controlled conditions, using proper parts and procedures.

WHAT IS INCLUDED?

  • Receive a certificate of attendance in support of your continuing professional commitment
  • All workshops include the associated hardcopy technical manual
  • Printed workshop handouts
  • Lunch and refreshments
  • Interact and network with workshop attendees and experienced instructors
  • Practical, industry driven content to assist you in your continuing professional development (CPD)
  • Attendees automatically become IDC subscribers and receive exclusive deals and technical content every month

WHO SHOULD ATTEND?

Maintenance, production and other plant engineers and technicians responsible for pressure relieving devices.

CONTENT SUMMARY

PRINCIPLE OF PRESSURE RELIEF VALVES

  • Operation
  • Development and application
  • Dimensional characteristics of pressure relief valves

SAFETY AND RELIEF VALVE TYPES

  • Conventional safety relief valve
  • Balanced safety relief valve
  • Pilot-operated pressure relief valve
  • Pressure and/or vacuum vent valve
  • Rupture disk device

RELIEF VALVE STRATEGY

  • Selection
  • Materials
  • Sizing overview

OPERATIONAL CHARACTERISTICS

  • System pressures
  • Device pressures

CAUSES OF IMPROPER PERFORMANCE

  • Mechanical/design (springs, materials etc)
  • Process (corrosion, fouling, damaged seating surfaces)
  • Maintenance

INSPECTION AND TESTING

  • Reasons for inspection
  • Shop inspection/overhaul
  • Visual on-stream inspection
  • Inspection frequency
  • Time of inspection

TESTING FACILITIES

  • Pressure relief device certifications
  • Pressure relief valve repair
  • Nameplate data interpretation and stamping

OVERHAUL

  • Pressure relief valve disassembly
  • Lapping and grinding
  • Assembly
  • Setting, testing and sealing

SIZING RELIEF VALVES

  • Gas and vapour sizing
  • Liquid sizing
  • Multiple valve sizing

CODES AND STANDARDS

  • API RP 576 and API RP 520
  • ASME Code Sections I and VIII
  • National Board Inspection Code

QUALITY CONTROL SYSTEMS

  • Records and reports
  • The need to keep records
  • Responsibilities

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