I've just been looking at API 521 (2007) and discovered that Sections 5.10.3 and 5.10.4 (on page 28) specifically state that for estimating the relieving flow through a failed inlet and outlet control valves "All flows should be calculated at relieving conditions", i.e. the set-pressure plus...
API 14C SAC A.4.c.5 seems to indicate that a PSV is required on a pressure vessel (max pressure >5 psig) unless it is the final vessel on a flare header (i.e. Flare KO Drum). However, this implies that any other vessel venting into the flare header (e.g. Closed Drain Sump) needs a PSV to protect...
Since 2000 HYSYS (and possibly other simulators) has calculated a 'real' Cp/Cv Ratio as its default and this can create potential problems if used inappropriately.
As pressure increases the 'ideal' Cp/Cv Ratio typically reduces from 1.4 towards 1.2 but the 'real' ratio can increase from 1.4 to...
Has anyone any experience of sending gas previously dehydrated in a TEG contactor through a dew-pointing plant which has MEG hydrate protection?
We are worried about the potential for stripping TEG vapour from the gas in the LTS and its accumulation in the MEG circuit. The effects that such...
IP15 is a significant reference used for estimation of hazardous areas from hydrocarbon releases. However such references tend to be coy about their application to the fuel gas lines to fired heaters and gas enginer drivers.
There seems to be a lot of "do it thiss way and your safe"...
