Défaillances des installations, application aux équipements sous pression : jeudi 16 novembre à Lyon

Mis en avant

Journée TechniqueLes équipements sous pression sont soumis à de nombreuses sollicitations et leurs endommagements peuvent avoir des conséquences graves avec des impacts humain, industriel ou environnemental.

Différents outils sont aujourd’hui à notre disposition pour analyser ces dommages et aboutir au bon diagnostic. Ils nous guident également pour définir les actions préventives ou curatives à apporter pour autoriser la poursuite de l’exploitation de ces équipements.

Les spécialistes de l’analyse de défaillances au Cetim, régulièrement confrontés à ce genre de problématiques, vous feront part de leur expérience en s’appuyant sur des cas concrets.

Pour connaître le programme de la journée et s’inscrire : cliquez ici

Publicités

Failure analysis of a high strength low alloy  steel pressure vessel

2016-11-16_18h21_36A paper published in « Case Studies in Engineering Failure Analysis« , available on sciencedirect.com.

High strength low alloy (HSLA) steel with a nominal composition of 0.15C–1.25Cr–1Mo–0.25V is being extensively used in space programme. Owing to its ease of fabrication and welding, a tank was fabricated out of this alloy. The tank is used to contain strontium per chlorate which on combustion develop secondary thrust, effectively used during attitude control of satellite launch vehicle. During one of the routine qualification tests, a tank had failed at an internal pressure of 109 bar, against a designed proof pressure of 120 bar.

Failure was initiated from long seam weld of a cylindrical shell and propagated into the parent material thereafter. Detailed metallurgical investigation has been carried out to understand the cause of failure. This paper brings out the detail of investigation carried out.

Read more ….

Failure analysis of a high strength low alloy steel pressure vessel

 

A Failure Analysis published in « Case Studies in Engineering Failure Analysis » october 2013.

High strength low alloy (HSLA) steel with a nominal composition of 0.15C–1.25Cr–1Mo–0.25V is being extensively used in space programme. Owing to its ease of fabrication and welding, a tank was fabricated out of this alloy. The tank is used to contain strontium per chlorate which on combustion develop secondary thrust, effectively used during attitude control of satellite launch vehicle. During one of the routine qualification tests, a tank had failed at an internal pressure of 109 bar, against a designed proof pressure of 120 bar.

Failure was initiated from long seam weld of a cylindrical shell and propagated into the parent material thereafter. Detailed metallurgical investigation has been carried out to understand the cause of failure. This paper brings out the detail of investigation carried out.

Read more