ENGINEERING SERVICES

- Fitness for Service Projects Example

Fitness-for-service assessment of type 304 stainless steel compression fittings containing surface and subsurface forgings flaws that supported high voltage, free standing, trussed transmission line towers in Argentina. The assessment included investigations into hydrogen embrittlement susceptibility, finite element and fracture mechanics modeling and statistical sampling techniques. $80K.
Fitness-for-service and remaining life study of an underground gas gathering pipeline that that failed due to rupture at a groove-like flaw associated with an ERW weld. General internal thinning, blisters and hydrogen charged material toughness properties were pertinent to the investigation. Corrosion rate modeling due to wet CO₂ was performed to assess safe allowable internal pressures. $7K.
Existing condition and fitness-for-service of API 650 aboveground storage tanks in a high population density area. Maximum fill-height calculations were conducted based on localized shell plate thinning. $20K.
Fitness-for-service assessment of more than two hundred pressure vessel and piping systems in a mothbolled ethylene plant. Critical degradation mechanisms evaluated included: (1) general metal loss, (2) H₂S cracking, (3)wet CO₂corrosion, (4) high-temperature sulfidation, and (5) brittle fracture evaluations. $20K.

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