We have a 4000 t lpg storage tank, and have a requirement to changeout the primary isolation valve on the 8" relief valve riser. Is the equipment for this available on the market or do we have to develop our own equipment and methodology?
I am looking at methods of isolating hydrocarbon (gas and liquid)lines to changeout valves. The lines are typically 24" API 5L class 600, possibly 900. What are the limiting factors which I need to consider for freeze plugs? i.e is proximity to the flange seal likely to be an issue, is the...