NACE MR0103 : Sulfide Stress Cracking Resistant Materials
MR0103 establishes material requirements for resistance to SSC in sour services containing H2S in either a gas or wet aqueous phase. If the requirements of MR0103 and NACE SP0472 are complied with issues due to Sulfide Stress Cracking (SSC) can be eliminated.
ASME B31.3 Pressure Testing Painted Welds
ASME B31.3 paragraph 345.3.1(d) states: All joints may be primed and painted prior to leak testing unless a sensitive leak test is required.
The code therefore allows for joints to be primed and or painted for pressure testing, but the owner’s specifications or site practices may prohibit it. It is important to know what requirements may supersede what the code allows before implementing this practice.
Even with the allowance for primer or paint, insulation is treated differently.
NACE Standards MR0103 vs MR0175
NACE MR0103 was developed as a downstream refinery specific standard for sour service metallic materials and NACE MR0175 which applies to only oil and gas production, or upstream activities.
ASME Section IX
Answers to the most common questions on ASME Section IX Welding, Brazing, and Fusing Qualifications
ASME SA-370 Testing of Steel Products
ASME SA-370 is a standard specification that outlines test methods and definitions for the mechanical testing of steel products, including steels, stainless steels, and related alloys. It ensures consistent evaluation of material properties like strength, ductility, and toughness.