API 570 Sec. 5

What shall be done when developing inspection plan for piping systems that operate at elevated temperatures [above 750 °F (400 °C)] to identify susceptibilities to credible damage mechanisms
?

• consult corrosion specialist

• specify use of high temperature probe for UT

• refer API 574 to determine the extent of examination

• define any special access and preparation needed

Safety precautions are to be implemented for inspection preparation to:

• define the location of the expected damage

• eliminate exposure to hazardous fluids, energy sources, and physical hazards

• review the piping system’s prior inspection
  results

• identify the next inspection date for each inspection type

As per API 570, the presence or potential of damage in piping systems is dependent upon its_____ (multiple answers)

• design

• material of construction

• operating conditions

• workmanship

Specific attention is needed for the following credible types of deterioration except:

• CUI

• soil corrosion for buried piping

• fatigue cracking

• general corrosion

API 570 lists different types of inspection and surveillance. Which of the following is not included?

• Internal and external VI

• OSI

• mechanical testing

More CMLs should be selected for corrosive piping systems with any of the following characteristics EXCEPT:

• higher potential for creating a safety or environmental emergency in the event of a leak

• higher expected or experienced corrosion rates

• higher potential for localized corrosion

• long, straight-run piping systems

What is the minimum temperature during the hydro test of piping with thickness of 1.25"?

• 10 °F (6 °C) above the MDMT

• 30 °F (17 °C) above the MDMT

• 120 °F (50 °C)

• ambient temperature