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Cyclic, Continuous, Frequent, In-Frequent, Emergency Service

asked Oct 25, 2016 in Engineering by Tadd Pham (5,620 points)

Descriptions of:

  • Cyclic Service
  • Continuous Service
  • Frequent Service
  • In-Frequent Service
  • Emergency Service

1 Answer

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answered Oct 25, 2016 by Tadd Pham (5,620 points)
Cyclic Service - a pressure vessel is in cyclic service if an assessment of the vessel according to ASME Section VIII Division 2, AD-160 indicates that a fatigue analysis is required

Continuous Service - used all the time during normal process operations

Frequent Service - used more than twice a month but not continuously

In-frequent Service - used less than twice a month

Emergency Service - used only as required for emergencies