API RP 581 - 3rd Ed.2016 - Add.2-2020 - Risk-Based Inspection Methodology

RISK-BASED INSPECTION METHODOLOGY, PART 2—PROBABILITY OF FAILURE METHODOLOGY 2-29
4.7 Tables
Table 4.1—Basic Component Data Required for Analysis
Basic Data
Start date
Thickness, mm (in.)
Corrosion allowance, mm (in.)
Design temperature, °C (°F)
Design pressure, MPa (psi)
Operating temperature, °C (°F)
Operating pressure, MPa (psi)
Design code
Equipment type
Comments
The date the component was placed in service.
The thickness used for the DF calculation that is either the furnished thickness or
the measured thickness (see Section 4.5.5).
The corrosion allowance is the specified design or actual corrosion allowance upon
being placed in the current service.
The design temperature, shell side and tube side for a heat exchanger.
The design pressure, shell side and tube side for a heat exchanger.
The highest expected operating temperature expected during operation including normal
and unusual operating conditions, shell side and tube side for a heat exchanger.
The highest expected operating pressure expected during operation including normal
and unusual operating conditions, shell side and tube side for a heat exchanger.
The design code of the component containing the component.
The type of equipment.
Component type The type of component; see Table 4.2.
Component geometry data Component geometry data depending on the type of component (see Table 4.3).
Material specification
Yield strength, MPa (psi)
Tensile strength, MPa (psi)
Weld joint efficiency
Heat tracing
The specification of the material of construction, the ASME SA or SB specification for
pressure vessel components or of ASTM specification for piping and tankage
components. Data entry is based on material specification, grade, year, UNS number,
and class/condition/temper/size/thickness; these data are readily available in the
ASME Code [12] .
The design yield strength of the material based on material specification.
The design tensile strength of the material based on material specification.
Weld joint efficiency per the Code of construction.
Is the component heat traced? (Yes or No)