Just a short question: If you specified seamless tube you surely had a sound reason for so doing. That being the case, why would you accept welded tube? Wouldn't it be sensible to make them take it back?
Dacc,
As BigInch and btrueblood have recognized there can be ignition mechanisms within the oxygen piping network if you do not use proper materials and keep safe velocities. I strongly suggest that you do not take your design any further until you get a copy of CGA G-4.4 or EIGA IGC Doc...
I just got in on the tail of this but it looks to me like Apakrat has it right. That is you either need a stuffing box or to raise the discharge pipe up high on the windmill or the so called lift of 180' is never fully developed. Otherwise the mill will just raise enough head to spill out of the...
Since you have a mechanical engineering license in your home country with almost three years experience in HVAC design and with five years experience in Project Management, I think you could get a job of some kind in an engineering organization right now. If you need to get another BSME and pass...
Varsamidis, Thanks for the post. I have been out of the office for a few days and am late in seeing your response. Do you have any recommendations for filters or cyclones?
Our client has requested us to provide about 1500 meters of 4" pipe from the hot tap, into an existing 20" fuel gas line, all the way to a metering station. The service will be fuel gas (primarily methane) and unfortunately there is a problem with black powder. As I understand it, the black...
oil198,
It seems to me that you are worrying too much. Two years is not very long, if you were sidelined ten then maybe...but, in my opinion, if you have what it takes Bechtel, Fluor and others will be only too happy to hire you and send you to the mideast.
It is always interesting to see someone try out a new idea but I have serious doubts about this one. A properly buried pipe almost never freezes and one with other "stuff" on the top almost always does.
jeancb,
I don't know you personally but it's a pretty safe bet that if you have the abiltity to get through school, you have the capability to do the job. As others have said before, there are incredibly important things like ambition, manners, attitude and sincerity and if you have them I...
Reply to chetoce. Keep in mind that failing an exam is not the end of the world. The first time I took the P.E. twenty five years ago, I busted it but the second time I passed. Don't give up!
Further to what Lansford wrote. Probably some of you took two semesters of Differential Equations in school and haven't used it since. But even though it may have been years ago when you were in college, you remain a champion at Algebra and Trigonometry, which you do use, and therein lies some...
Our firm has been involved in relocating some scraper traps in NGL service. In one case there are two EIV's (Emergency Isolation Valves)in series on the lateral downstream and in another case the single EIV is upstream of the trap. It seems logical to me that the EIV is ahead of the trap so that...
Frostrobn,
In my experience gaseous oxygen is a material to be handled with care. I rather suspect that JLSeagull is right, that the problem is one of velocity and impingement. Usually monel or inconel are appropriate materials for oxygen impingement areas. I think it would be worth your while...
My apologies for my abominable mistakes above:
CASE 1 (OPE)W+T1+P1
CASE 2 (OPE)W+T2+P1
CASE 3 (SUS)W+P1
CASE 4 (EXP)L4=L1-L3
CASE 5 (EXP)L5=L2-L3
This is an example from a recent CAESAR II printout for B31.8 where Operating is a Code check and CAESAR II will also do it for B31.3. Try it!
Well, I really think juliocesarp could better benefit from addressing the question to COADE. However, let me give you my thoughts:
CASE 1 (OPE)W+T1+P
CASE 2 (OPE)W+T1+P
CASE 3 (SUS)W+P1
CASE 4 (EXP)L4=L1-L3
CASE 5 (EXP)L5=L2-L3
Operating Checks come from B31.8 and while they are not Code...
Keep in mind that the program uses different formulas for the different cases and that sometimes the calculations for the operating case will result in higher values than for the other cases. When this happens it doesn't mean it is a catastrophe; it may be all right. These values are important...
Juliocesarp,
If you perform an analysis under ASME B31.3 you will find that the operating case does not have a code stress check. Nevertheless, it is useful for restraint loads and displacement. It is better that you directly contact COADE. query@coade.com
Although this may not be precisely what you are asking for you can get small volume high pressure air flows from Haskel Air Driven Gas Boosters. USA phone 818-843-4000.
Please read the following statement and inform me as to what it means, "With regards to pressure testing on fabricated pieces of pipe, orange peel test heads are excluded." Would this be an instance in which wedges near the end of the pipe are cut out and removed and the rest of the pipe end...
