Hi,
These are very basic requirements for amine service. Typically, weld hardness of 200HBW maximum after PWHT is common requirement for amine service. You may find detailed description of the problem and engineering solutions in API RP -945: API RP 945 : Avoiding Environmental Cracking in Amine Units (ihs.com)
Thanks.
Pradip Goswami.P.Eng, IWE.
Independent & Consulting Welding & Metallurgical Specialist
Linkedin: https://www.linkedin.com/in/pradip-goswami-2999855/
Email:pgoswami@rogers.com,pradip.goswami@gmail.com
Cell/Whasapp:1-905-9793232
From: materials-welding@googlegroups.com <materials-welding@googlegroups.com> On Behalf Of PSS
Sent: January 31, 2021 8:39 PM
To: Materials & Welding <materials-welding@googlegroups.com>
Subject: [MW:31969] NACE SP0472-PWHT - AMINE service
Experts
Client Requirement : Vessel shall be PWHT. Production Weld deposits hardness shall not exceed 200HBW after PWHT. Carbon steel welds shall comply with NACE STD SP0472 para. 2.2 & 3.3
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