We usually leak test field assembled piping in hydrocarbon service to 100% of the operating pressure. As BigInch says, this will reveal any gasket (joint) leaks, and after all, isn't that the only thing left to test? Obviously you need to witness the shop hydro or review write-ups of an approved...
Let me clarify that this is not the practice for the majority of draining or decon. activities, this is for draining of certain components in the unit that either aren't tied into the amdo system or for which the amdo system does not drain adequately. Certain pumps, meters, c/v's, etc. Our amdo...
All,
This a request for suggestions on available equipment for my idea. Hopefully I just don't know the availability and all of the experience in these forums can recommend something or have some other ideas...
While draining and decontaminating equipment in a sulfuric acid alkylation unit, a...
I'm coming out of my first turnaround as a unit engineer, and am looking at updating our documentation to reflect all the changes we made during the T/A, and information that was discovered during the planning and execution. I guess I'm looking for opinions on how the updates should be captured...
I agree with roker. If you have not had success in keeping the pump and suction line hot a small bypass around the discharge check valve will do the trick. I would shoot for a flow that will flush the volume of the pump every minute or so. Be careful when sizing the warm-up line if you have...
Is SA-453 Gr. 660 Class C a Code Allowed fastener material under B&PV code? I have specified Gr. 660 bolting for an internal bolting application, and the vendor wants to use Gr. 660 Class C bolting, but states that it does not have code allowable stress values. Section II lists only Class A and...
Is SA-453 Gr. 660 Class C a Code Allowed fastener material under B&PV code? I have specified Gr. 660 bolting for an internal bolting application, and the vendor wants to use Gr. 660 Class C bolting, but states that it does not have code allowable stress values. Section II lists only Class A and...
We do not use an internal coating in our diesel tanks. gr2vessel's recommendation of an epoxy phenolic coating is a good one, but the expense of that coating is most likely not justified with the improved corrosion protection. If you can get the water out, do that. If you can't, make sure you...
Tried to search for this and talk with industry experts, but no conclusive answer so far....
A General Twin Seal valve, or a similar single body double block and bleed valve, often uses a device to relieve the pressure in the cavity between the 2 seals to the upstream (or downstream) side of...
Looking for advice in what we could be happening in our 650# BFW system, and how to correct it.
We recently ran a parallel line to our current 650# BFW supply to our 650# steam drum. It is identical to the original line, which will be abandoned due to washed out CV and bypass globe valve. We...
Wow great input from this *small* question.
zelgar - Good point that you made. I have already discussed with our FUGEM coordinator to verify that he does not need the flanges shown for monitoring. We do not have requirement to sniff flanged connections in our location. Yet. Hmm. Also no...
Don't know if this is correct forum to ask....
Are there rules about which flanges need to be shown on a P&ID (EFD, MFD)? I usually have only included flanges when they are:
1) First flange off of a piece of equipment
2) Blinding points
3) Flanged valves
The question came up when I was...
Hi All,
We have some underground piping that has been out of service for 4-15 years depending on who I talk to. The line has not been under pressure, and we are assuming it was not decontaminated (product was ~clean butylenes). We want to put the pipe back into its original service.
I am...
