![[ Visit Client Website ]](images/banner.gif)
Pipeline Integrity - TEG 267X
13-17 March 2010, Houston, Texas
Importance of PMI in Equipment Fabrication Stage in Oil/Gas Industry
S. Al-Sulaiman[1], A. Al-Shamari[2], Amer Jarragh[3], S.S. Prakash[4], ,
Abstract
Non-Conformances (NC) that are encountered during fabrication stage like mix up of metallurgy and the use of non-NACE Compliant material may go unnoticed for years till a failure occurs. From a corrosion point of view, some of these non-conformances may not be detrimental. However, the presence of fabrication defects, which may open up after years of service, contribute to major failures resulting in production loss, environment contamination, health and safety hazards, etc..
This paper highlights two such cases viz., SOHIC damage of a non-NACE Compliant T-fitting in a sour crude pipeline and a Crack in a dissimilar welding joint in crude pipeline where inadvertently a spool piece of low alloy was welded to the carbon steel piping. In both the cases, during the fabrication stage, materials have been used without proper understanding the Non-conformance impact on the integrity of the pipelines in case they fail.
Key words: Positive Metal Identification (PMI), NC, SOHIC, Crack.
[1]Team Leader (N&W), Inspection & Corrosion Team, Kuwait Oil Company, Ahmadi, Kuwait.
Tel: (965) 386-1977; Email: ssulaima@kockw.com
[2] Corrosion Specialist, Inspection & Corrosion Team, Kuwait Oil Company, Ahmadi, Kuwait.
Tel: (965) 386-6394; Email: ashamari@kockw.com
[3] Senior Corrosion Engineer, Inspection & Corrosion Team, Kuwait Oil Company, Ahmadi, Kuwait. Tel: (965) 2386-65428; Email: agaragh@kockw.com
[4] Specialized Corrosion Engineer, Inspection & Corrosion Team, Kuwait Oil Company, Ahmadi, Kuwait. Tel: (965) 386-6694; Email: sprakash@kockw.com