Thanks Steve, up to 2 weeks ago I was still using API Spec 5L year 2000 edition, and so was the client, so we were thrown a little off the course for a few days.
SA/A193 B7 and SA/A194 2H are very common where your unit is going, so just stick with it. In fact, most of the B7 bolts that I use in Malaysia come from Korea and EU.
I have received some line pipes with the notation L290 instead of API 5L X42 that we have ordered. This had caused some confusion during material acceptance with the client but was eventually resolved by way of qualifying the SMYS and chemical composition.
Is this notation adopted industry wide...
You can run your fuel gas pipe concealed in chases, embedded in walls, etc, but make sure all joints are welded. No flanges and threads are allowed. They are a a potential source of leaks, and you may not be able to gain access later for repairs or maintenance.
Your senior probably said no to...
BigInch is on the dot about flow measurement, but I suggest to refer to your project spec if the syngas need to be reported/displayed on mass basis. If it doesn't, you do not require the density.
By the way, did anybody notice that the FT readings come out below zero? That looks normal to you?
1) You need to check the material to see if the design code allows operation at those temperatures. Then, you have to requalify your tanks to run at higher pressure. This involves recalculating the stresses and treating the tanks to another hydrotest at higher pressure. Some authority approval...
If you haven't constructed it, specify the materials, welding, NDE and stress relief to comply to NACE requirements.
If you have, take the materials, welding, NDE and strees relief records and compare with NACE requirements. If in the process of construction some requirement is not accounted...
curtis & rmw, i think that supercritical means that the steam produced from the boiler is at higher pressure and/or temperature than the critical values for water.
You can. I use bronze or brass material for aboveground threaded connection valves with lockable handle in housing areas. The utility company supervisor in the area holds the master key. They are all outdoors.
In absence of detailed cut sheets I normally specify 2.5% rounded up to the nearest number of pipe lengths for every size. But that's for pipe spools, not pipeline laying.
Out of curiosity, do you qualify welders when you're on the rig, offshore? What happens if a welder fails his test?
If you consider steam flow at 10m/s, a 10 meter section pipeline filled with, say, 1 liter of water, needs approximately 2,500 kJ/s to heat up from ambient and vaporize (at 1 barg pressure). This needs to be done almost instantaneously upon contact. That's a lot of superheat. If you start slow...
http://www.astm.org/Standards/A123.htm
http://www.iso.org/iso/iso_catalogue/catalogue_tc/catalogue_detail.htm?csnumber=43431
They do not specifically refer to piping elements, but our clients' piping classes or specs normally make reference to these two.
I have worked on a plant where steam is produced from a biomass (processed oil palm kernel)-fired boiler and piped about 1.7km to the process area. We had one trap set at 150ft intervals. Drained condensate from the traps was not recovered. But that's in Southeast Asia where it is warm all the...
