As per API 6A and ASTM A105 standard, carbon steel A105 cannot be used for class API5000.
However, when I saw some piping specification, it specified carbon steel A105 for pipe wall thickness less than 1". Also I found many carbon steel flowlines using A105 flange when connected to X'mas tree...
Can you help me please? I am very confused about API flange.
Now I have piping specification for API 5000 class from two big companys in offshore field.
Both said that flange 3/4"-2" will be class 5000 RTJ as per API 6A Type 6B and gasket will be API 6A Type "RX"
However, when I checked API...
Hi all,
Normally ANSI B31.3 specifies formula for thickness calculation of blind. However,when we specify only pipe size, pressure rating and flange face, mostly all vendors inform the same thickness. For example, thickness of spectacle blind 10" 600# RTJ will be 2.25" (57 mm.)as per...
HI guys,
Anyone know how to consider allowable deflection of pipe? As I found, it seemed each engineering company have difference value of allowable deflection of pipe for design.
Thanks,
Dave
Hi all,
I have seen blast joints installed (Stainless steel, 4 feet length)on carbon steel flowline at downstrem of choke valve connecting X'mas tree. But now I naver seen it on new offshore platform.I know it installed to resist erosion caused by 3 phase flow at outlet of choke. However now I...
Hi all,
I am considering piping stress analysis of flowline downstream of X'mas tree. As we checked existing wellhead,we found that vertical growth of each X'mas tree are difference. So we used maximun vertical growth as worst case. This is existing platform.
However, In case it is new plant...
Hi all,
Now I am considering produced water reinjection system at offshore platform. The pump is reciprocating pump which have vibration. Piping class of suction and discharge pump are 150# and 1500# respectively. Design discharge presure is 3000 pisg.
Currently I need to install flexible...
I am checking pipe stress analysis on suction and discharge pipe of gas engine pump. Now I check only static stress and consider nozzle load of pump only.
Do you think we should consider dynamic stress for these pipe? Also, what do we need data from pump manufacturer for this calculation?
Many...
Hi all friends,
I am designing pipe connecting suction nozzle of gas engine pumps using for oil/liquid at offshore platform. My owner need to install flexible joint between nozzle and pipes to absorb vibration of pump and get acceptable load at nozzle.
But I am not sure that flexible joint can...
Hi!
I know that temporary strainer (cone type) can be installed 2 direction as follow:
1 fluid flow from outside of strainer to inside.
2 fluid flow from inside of strainer to outside.
Can you please tell me how we decide to install temporary strainer?
Gas flow is difference from fluid flow...
My company specification require TE/TT designed for EExd.
Now we are replacing existing thermowells with new type. But we found the problem about connection. We cannot connect new thermowell to existing element due to no full thread of cover flange. Therefore we decide to install nipple and...
Hi gents,
I work in oil and gas exploration and production company. We have many wellhead platforms for production. Normally when we operater wellhead, X'mas tree will have some vertical growth depend on pressure and temperature (maximum 100 mm.). Some wellhead, I design pipe support of...
HI friends,
Anybody know vendor who can supply portable diesel fire water pump which can be used in hazardous zone 2 area (IEC standrad)?
I need to use it on wellhead platform for fire water system.
Thanks and best regards,
11000
I am so confused between Code, Standard and Professional Document. Why Code is ANSI B31.3, B31.4, B31.8, AWS D1.1, etc.? For Standard, it is ANSI B16.5, B16.9, B16.34, etc. For API, it is not Code and Standard, but it is Professional Document.
Anyone can help me? What is a difference?
