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ENI Exclusive Webinar on ECA in Sour Service

Webinars 19 May 2022

ENI Exclusive Webinar: ECA in Sour Service

Engineering Critical Assessment (ECA) is a fracture mechanics based methodology used for assessing the integrity of structural components containing known or postulated crack-like defects. ECA is often performed in accordance with either national or international procedures eg BS 7910, R6 or API 579. These procedures are updated on a regular basis, taking into account the information resulting from their associated development programme and other available information worldwide.

The three major elements of ECA are flaw and component geometries, stresses as well as material properties. In most cases under static loading conditions, flaws and components remain unchanged through-out service life. Material properties, on the other hand, could vary during service life due to environmental effect such as contaminants, irradiation, temperature, ageing etc.

The webinar will provide a brief introduction to the implications of sour service and a stronger focus on the testing required to characterise the necessary material properties in environments.


Yin Jin Janin - Principal Project Leader – Fatigue Integrity Management

Yin Jin Janin

Principal Project Leader – Fatigue Integrity Management

Yin Jin joined TWI in July 2012 as a project leader in Fracture Integrity Management Section. She manages projects that involve testing as well as the applications of ECAs of engineering structures especially those containing non-standard flaw geometry. She is a member of BS 7910n WEE37 main committee and Fracture Panel. She is also Codes and Standards Theme Lead of FESI. As a member of BS and ISO fracture toughness testing committee, she works closely with Henryk Pisarski to lead the development of testing procedures.

Yin Jin's history with TWI dated back to 2008 when she joined the Numerical Modelling and Optimisation Section as a Research Engineer through the Nuclear Engineering Doctorate Programme of University of Manchester. Her EngD work, under the supervision of Prof Stuart Lyon and Prof John Wintle, covered areas of corrosion and materials science, residual stress measurement as well as computational simulation of welds.

Prior to 2008, Yin Jin was a Principal Process Engineer at a foundry in Manchester, leading and developing techniques to improve casting process and product quality. Yin Jin is a Malaysian born Chinese and came from Borneo, Malaysia.

Kuveshni Govender - Principal Project Leader – Fatigue Integrity Management

Kuveshni Govender

Principal Project Leader – Fatigue Integrity Management

Kuveshni joined TWI in 2012 as a Senior Project Leader in the Fatigue Integrity Management section. She manages projects covering the fatigue performance of welded and unwelded components across a wide range of industrial sectors. Her main area of work concerns corrosion fatigue, including fatigue endurance and fatigue crack growth rate testing, in sour, sweet, seawater and other corrosive environments. Kuveshni is also involved in failure investigations of structures within multidisciplinary teams.

Prior to joining TWI, she worked as a Postdoctoral Research Associate in the Materials Performance Centre, University of Manchester where she was involved in projects concerning corrosion issues experienced in the nuclear industry, viz. stress corrosion cracking and corrosion fatigue. Kuveshni obtained a PhD in Materials Chemistry in 2003 from the University of Manchester and has 25 publications.

Mr Menno Hoekstra - Technology Manager - Sour Testing

Mr Menno Hoekstra

Technology Manager - Sour Testing

Menno joined TWI in 2007, and started working in the non-destructive testing group (NDT). In 2009, he transferred internally to the fracture (FRM) department within the structural integrity group (SITG). He mainly works on single client projects for our members, determining flaw tolerance of engineering structures using an engineering critical assessment (ECA), fracture mechanics based approach. He is also involved in managing materials testing required to provide the necessary input for the ECAs. This includes small scale and full scale testing, together with fracture related environmental testing (mainly focusing on 'wet sour' (H2S) and cathodic protection environmental testing).

For more information please email: