Agree 100% BigInch - that's why I asked the question of why - generally there is some logic in decisions made, but it is not always obvious what that logic is or if it makes practical sense. I struggle to see it on 30".
Greg Lamberson, BS, MBA
Consultant - Upstream Energy
Website...
bartee
Big Inch is correct. Need to look at the client's reasoning behind this request - is it cost, schedule, space limitations.
Also need to ask the client what type & frequency of pigging will they be doing. Will inteliigent pigs be used? The type of pigging will drive the length &...
bartee
I've used portable pig traps before, typically in a scenario where you have allot of small gathering lines that are the same size(not over say 12") that need to be pigged occasionally and the client didn't want to build a bunch of pig traps - we just had connections on each end of every...
zuccus
Perhaps when the vendors start refusing to provide components based on this guys tactics, it will get management's attention. Not all MBA's are stupid, some are just too smart for their own good (or anyone elses)!! I'd say how you laid it out to the forum in your post should suffice for...
a234f56
You don't calculate man-hours for a cross ocuntry pipeline - that is for plant work. Basically you build crews based on the work to be done and determine how many days it will take each crew (with the welding crew setting the pace as far as daily progress), including overheads &...
tristrium1
This is nothing to fool around with. Suggest you take a look at API 2207 which is written for preparing tank bottoms for hot work. Not exactly what you are doing, but it has some very prudent precautions you need to take.
I would also suggest, if you don't already have it in...
I think what seasar is talking about is the bits at each end where the test headers, recorders & dead weights will be will be located. The rest of it, even if it wasn't backfilled would not be at risk for excessive movement if it's in the trench (temperature fluxations would be a whole...
For fire you need 3 things, oxygen, a spark and a combustible. Near a tank filled with diesel or jet fuel you have 2 of 3 - add welding and bingo. You need to use gas detectors to assure the level of vapors are suffeciently low prior to welding and continually monitor it during welding.
A...
abd34711
In a nutshell, a feasibility study is an early study to determine, among other things, if the project is feasible or not and would include a conceptual design, enough of a design to do a cost estimate (level of accuracy is detemrined by the amount of cost the owner is willing to spend...
Myango:
No rules of thumb that I know, just have to do a quick study for power, air, and water and determine how much of each is required based on the man power, equipment & work that will be done/used. Then determine if the exisiting plant has excess capacity and can provide or if you need...
Very interested to know more - never seen or heard of it happening either.
Could be poor coating around the cadweld leading to excessive localized corrosion? Must be thin wall pipe?
Greg Lamberson, BS, MBA
Consultant - Upstream Energy
Website: www.oil-gas-consulting.com
Correct on the TNTlb. SD = Safe Distance = meters, sorry should have specified.
Greg Lamberson, BS, MBA
Consultant - Upstream Energy
Website: www.oil-gas-consulting.com
Ooopps, should have been:
E = (PV / k-1) x (1-(Patm / P)^k-1/k,
and
SD = 15 (TNTlb)^.5
Greg Lamberson, BS, MBA
Consultant - Upstream Energy
Website: www.oil-gas-consulting.com
Do a stored energy calculation by:
E = (PV / k-1) x (1-(Patm / P)k-1/k, where:
E = Energy in Joules
P = Absolute pressure in Pascals
V = Test volume in M3
Patm = Atmospheric pressure in Pascals
k = Ratio of specific heat of air
Then convert to TNT:
TNTlb = E x 4.8 x 10-7
The safe distance...
5689
You might try:
USEPA Oil Program Center at (703) 603-9918
or
Scientific and Environmental Associates, Inc.
325 Mason Avenue
Cape Charles, Virginia 23310
Tel. 757-331-1787, fax –1788, email seahq@erols.com
I cut & pasted an example TOC, probably a little "heavier" than you would be...
pipeliner3000
Sorry to piecemeal, but we are in the process of hydro testing the onshore portions and will be using methanol slugs. We checked with our vendor and no issues with the epoxy, however, you might want to check the valve vendor to make sure the seals are okay with methanol - outside...
pipeliner3000:
Just curious, are you internally coating the joints also? Reason I ask is I am on a project at the moment where the owner has internally coated pipe (epoxy) and is not internal joint coating.
Greg Lamberson, BS, MBA
Consultant - Upstream Energy
Website: www.oil-gas-consulting.com
UNIQUE0
You haven't mentioned what kind of service this pipeline is for. If I were an operator and my pipeline had sat for 3 years as this one had, I would want to check out the condition of the pipeline 1st with a smart pig run.
You stated -40C & +7C dew points, not sure how you jumped...
1. Based in the midwest: oil & gas-proj, const & eng mgmt
2. 2 proposals in this month
3. 1 major contract, 1 minor contract, 1 pending award
4. 2010 is trending about 20% higher (in volume) than 2009
Greg Lamberson, BS, MBA
Consultant - Upstream Energy
Website: www.oil-gas-consulting.com
arh13p
I see no one has answered. You will need to be more specific as to what the service is for and under which code the pipeline is governed.
Specifications & procedures are separate documents. Your project specification will contain the requirements for meeting the governing code(s) as...
