API Std 530 Calculation of Heater-tube Thickness in Petroleum Refineries specifies the requirements and
gives recommendations for the procedures and design criteria used for calculating the required wall
thickness of new tubes and associated component fittings for fired heaters for the petroleum, petrochemical,
and natural gas industries. A key element in the design procedures are material strength parameters and
physical properties. The required strength parameters include yield and tensile strength as a function of
temperature and the time-dependent properties (i.e., creep regime) include the creep rupture strength. The
need for new materials for fired heater tubes is being driven by higher pressures and temperatures to
increase production yields, and the need for enhanced creep strength and increased corrosion resistance
to extend unit operation. This Bulletin defines the requirements to add new materials to API Standard 530.
As API Std 530 references material properties and high temperature data from WRC Bulletin 541, this
Bulletin also serves to provide guidelines for the incorporation of new materials into WRC Bulletin 541.
These requirements include mechanical and physical property testing requirements, along with
compositional, metallurgical, and welding requirements as well as justification for these requirements.
Temperature intervals and the minimum number of heats for testing are specified for both time-independent
and time-dependent mechanical properties, as well as for physical properties. Similarly, data requirements
for the testing of welds consisting of new base materials are defined. The final section of this Bulletin
describes additional data requirements for inclusion of materials (and welded joints) into API 579-1/ASME
FFS-1 Part 10, on top of the basic requirements for inclusion of the material into API Std 530.
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| Number of Pages : | 32 |
| Published : | 2020 |
