It has not been generally accepted that DDT may be a threat at offshore petrochemical facilities, and even if this was the case, prediction tools have been missing, thus the potential effect of DDT is seldom considered in explosion studies. For FPSOs, and even more FLNGs due to larger dimensions and inventories, operators should be concerned that major explosion scenarios could lead to DDTs.
Recently a DDT prediction parameter has been implemented in the FLACS CFD explosion model, and with some model adjustments in FLACS it is possible to predict the effects of DDT and resulting explosion loads with good precision.
A CFD-based dispersion and explosion study on an FPSO will be presented in which the potential for DDT is evaluated, both with regard to frequency and potential consequences. The impact of assumed DDT on frequency-of-exceedance curves for explosion loads will be presented for selected targets inside and outside the process areas (e.g. at living quarter). DDT will mainly be a concern for large cloud sizes, often larger than usually considered for design accidental loads for an FPSO (frequency10-4/year). Mitigation measures will also be discussed, and the effect of a separation wall between the process and utility areas on dispersion, explosion and DDT-potential will be presented.
Would you like to access this content?
No problem. You just have to complete the following steps.
You have completed 0 of 2 steps.
You must be logged in to view this content. Log in now.
Purchase Technical Presentation
You must purchase this technical presentation using one of the options below.
If you already purchased this content recently, please click here to refresh the system's record of ownerships.
|Credits||0.5 Use credits|
|List Price||$25.00 Buy now|
|AIChE Members||$15.00 Buy now|
|AIChE Undergraduate Student Members||Free Free access|
|AIChE Graduate Student Members||Free Free access|