Delayed Coke Drum FFS & Damage Assessment to
ASME FFS - 1 / API 579 - 1
This three day course will examine the application of the ASME VIII Divsion 2 and
ASME FFS-1 / API 579 industry standard practices to the evaluation of undamaged and
damaged coke drums. To date, these documents have not been successfully applied leading to alternative
"blackbox" or "trademarked" approaches that have not been technically detailed and are unsubstantiated by
usual engineering practices. These "black boxes" are unbenchmarked, heuristic and provide, at best,
unquantifiable and arbitrary guidance.
The major deficiencies in these methods is that they
cannot quantitatively answer for a specific drum:
· what is the current damage status
· what is the projected service life
· what is the incremental damage for each cycle
· what is the service life for an unbulged drum
· what is the impact of weld overlay
This course will begin by reviewing the applicable engineering
mechanics / code criteria underlying the conventional design of coke drums and the "design by analysis"
approaches of the ASME VIII Division 2 Code and the ASME FFS -1 / API 579 standard.
The primary obstacles in applying the Code and standard
have been some widely held misconceptions, including
· the thermo-mechanical loading is undefinable
· strains can only be determined by strain gauging
· loadings are "too complicated / complex" to evaluate
· the thermo-mechanical strains are not calculable
A strong understanding of the applicable engineering principles and limitations underlying the
industry practice documents will allow the user to apply this newly - acquired knowledge
to calculate the fatigue service life of coke drums whether bulged or not, i.e.,
in both damaged and undamaged states. At installation, coke drums have a
finite service life determined by actual cyclic conditions encountered in operation.
This expected service life, "at new" can be calculated. As operation proceeds, bulging will occur
reflecting the unique operational exposure severity of the drum. The FFS techniques
can be reliably applied to determine the incremental deterioration being experienced
and allows updating of a coke drum's service life throughout its operational life.
Repair / replace decisions can be made in a fully deterministic
fashion rather than by a heuristic / intuitive approach.
This course is intended for individuals
who are responsible for the design, installation, inspection, repair & maintenance, or
fitness for service assessments of delayed [DCU] coke drums in the hydrocarbon processing (HP) and
oil sands industries. This includes inspectors, reliability & asset integrity engineers and, business unit managers
who have interest in obtaining "hard numbers" to make better repair / replace and business decisions.
Detailed Course Description