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We are planning on waiving a hydrotest by meeting the requirements in API 653. One of those requirements is written acceptance by the owner/operator. Is there a standard form somewhere in API 653/650 or 579 we can use? I can't seem to find one... Thanks

Thanks I checked out those websites, according to: http://coastalflange.thomasnet.com/viewitems/industry-standard-class-150-flanges/tandard-class-150-series-a-slip-on-bolting-matches? ...there are no standards that govern 26"+ slip on flange dimensions. I had already found dimensions based on...

I noticed B16.47 doesn't mention anything about slip on flanges - why is this? Is there some other standard that does?

Slurry pipe material would be either 1/4" Chrome Carbide on 1/4" CS (or tungsten carbide in some places) or 1/2" or thicker white iron in places. As mentioned we also have neoprene lined pipe as well. Mainly CCO though.

Obviously you aren’t addressing the root cause with an external repair. We're talking about hitting maintenance intervals here to avoid shutdowns. You've got some fog on your end too eh? We've actually strayed far from my original question on slurry pipeline repairs - In some locations in our...

No failure yet :-). We have had some success with neoprene lining. Part of the problem was water quality changes. My goal is to find out if I can have a permanent fix installed from the outside without a shut down for a long section of line. I have been hearing that it is possible for a...

I found out yesterday that we only have inspection data for two locations 85 meters apart in this line. Both UT readings in these locations were bad - which lead operations to conclude that we need to replace the whole section. I'm not going to get too excited until I get more inspection data...

30" XS pipe 175 psi Above ground (40' up) it is supported by pipe shoes and load pads for the section in question CS A106B

I wish! But what's life without a little excitement?

Our next shut down is in April or May. I forgot to mention that the temperature goes down to -50C in the winter the water return is insulated and heat traced but the slurry line is bare pipe. The operating temperature is usually 30-50C but there could certainly be a case where the line is...

Thanks for the response Any ideas on how a fiberglass wrap or epoxy repair would fare in these two situations? We want to hit our maintenance interval without shutting down...

Lets assume 2 situations: 1. It's a slurry so there's a lot of sand. I don't know the concentrations but if flow velocity decreases the line will quickly sand out (fill up with sand). We pump just above the settling velocity of say 2.5-3.5 m/s. Low pressure - 500 - 1000 kPa. 2. The water...

Hello, Has anybody repaired a slurry pipeline with an external Fibreglass or Carbon fibre wrap? How did they hold up? The slurry is water with some sand in it. How do carbon fibre/ Fibreglass work in an erosive service? Would they hole through extremely quickly? Thanks

I think Dilbert is the perfect model on how not to get ahead.

If sombody came in with their Mom I can only assume she was a babe. Otherwise that's just sad. Those young hipsters riding their skateboards and using the internet, who do they think they are?

Has anybody dealt with different methods of getting work platforms into a large conical vessel? (Approx 150-200' tall) The last conventional scaffolding install took too long for our time slot. The top of the vessel can be removed and there is a 42" manway at the bottom of the cone. Pointy end...

Yeah we're trying to steer clear of the days to erect and days to dismantle. Is there another form I could try posting this in? Anybody have any links to useful threads? (I couldn't find any) Thanks

We are going to be coating and lining the entire surface. The lining plates will be welded on and are quite heavy, the coating is like an epoxy paint but the whole surface needs to be cleaned before either of these things can happen.

Pointy end is the bottom, Diameter is 24.5 Meters at the top down to about 2 meters at the bottom.

Has anybody dealt with different methods of getting work platforms into a large conical vessel? (Approx 150-200' tall) The last conventional scaffolding install took too long for our time slot. The top of the vessel can be removed and there is a 42" manway at the bottom of the cone. I'm looking...