Greetings,
In a Crude column overhead section with two stage cooling system i.e. First stage operated hot and dry with condensed Hydrocarbon refluxed back to the column. In second cold stage water + hydrocarbon is condensed. In such system which location is ideal for Neutralizing Amine...
Greetings,
I want to get clarified on few things on selection piping metallurgy for the inlet of Reactor Effluent Air Condenser [REAC] for Hydro processing Units i.e Hydrocrackers & Hydortreaters.
1. Is anybody is using Austenitic Stainless steel [300 series] in these sections?
2. If yes,what...
Greetings,
I want to get clarified on PWHT requirement for seamlesss carbon steel piping [not equipment] to avoid Sulfide Stress Cracking [SSC] in refinery sour service.
As per NACE SP 0472 & NACE MR 0103, PWHT is not mandatory requirement for carbon steel to avoid SCC. Hardness control is the...
Greetings,
I was going through the 2014 version of ASME B31.3. Major changes have been made, especially in Para.330- Preheat & 331-Heat treatment. I want to get clarified on the following:
1. What is the rationale behind setting 600 deg F/hour [divided by 1.5 times the thickness in inches] as...
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I was reviewing a piping specification for high temperature austenitic stainless steel operating at 1200 deg F [635 deg C].But the operating pressure is low [1 kg/cm2]. The metallurgy for the bolt material specified is SB 408 UNS N08811. This bolt material is not listed in [Design...
Greetings,
Memebers please clarify the following:
1.SA 333 specification does not “explicitly” specify the fine grain requirement for GR 6 pipe. If I want to check the same, can I use the criteria that carburized austenitic grain size number of 5 or higher (finer) as determined by the...
