NDLI: Integrity Assessment of Pressure Vessels Subjected to Hydrogen Induced Damages

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Al-Mithin, Abdul Wahab Sardesai, Vinayak Al-Ajmi, Ghassab Abdul, Sattar A. Hannan
Copyright Year	2010
Abstract	Hydrogen damage to pressure vessels in a Crude Oil Production facility is not uncommon. The intriguing question is about the decision to continue affected vessels in safe operation if such decision is supported by an accurate engineering assessment of the damage and the impending risk. Engineering assessments of the vessels instill confidence for safe operation and help in minimizing production loss & capital expenditure. This paper presents the integrity assessment undertaken during the years 2004–2005 for pressure vessels of an upstream oil production facility (Gathering Centre) of Kuwait Oil Company (KOC), where high H2S (hydrogen Sulfide) levels in the process streams have made the pressure vessels susceptible to hydrogen induced damages. These carbon steel pressure vessels were manufactured to ASME Section VIII Div 1 during the years 1961–1968. As part of elaborate Inspection Program of the pressure vessels in the Gathering Centre, ultrasonic testing was conducted on all the hydrocarbon pressure vessels. Several vessels were found with significant embedded flaws including hydrogen induced crack-like defects & blisters. These defects were further evaluated by Automated Ultrasonic Testing (AUT) which comprised of C-Scan and Time-of-Flight Diffraction (ToFD) techniques. AUT was used for the precise detection & sizing of the embedded flaws which is important for Fitness-For-Service (FFS) Evaluation. Subsequently, the affected vessels with critical flaws were evaluated by FFS assessment as per API-579. While some vessels were found unfit for further safe operation, others were retained in operation with periodic monitoring.
Sponsorship	Pressure Vessels and Piping Division
Starting Page	793
Ending Page	798
Page Count	6
File Format	PDF
ISBN	9780791849224
DOI	10.1115/PVP2010-25423
e-ISBN	9780791838785
Volume Number	ASME 2010 Pressure Vessels and Piping Conference: Volume 3
Conference Proceedings	ASME 2010 Pressure Vessels and Piping Division/K-PVP Conference
Language	English
Publisher Date	2010-07-18
Publisher Place	Bellevue, Washington, USA
Access Restriction	Subscribed
Subject Keyword	American petroleum institute Hydrogen Vessels Flight Fitness-for-service Inspection Risk Production facilities Fracture (materials) Diffraction Pressure vessels Crude oil Carbon steel Ultrasonic testing Damage
Content Type	Text
Resource Type	Article

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