My Client intend to have Production Weld Hardness test for our "NACE" categorize material. We are in a Gas Plant processing (AGRU & SRU).
In NACE MR0175. The weld deposite value for WPS/PQR is 250 HV. However HV can not be used for production weld, since it needs to be destructive test. While...
Dear All,
We are undergoing an Gas Plant Sweetening project. My Client is installing an Air Fin Cooler on the Wellheads, before entering the pipeline. The initial use was to reduce the temperature because he said it was too hot for any underground wrapping.
Because he already installed the Air...
Dear All,
I am facing an upstream oil&gas processing facilites project which the client tries to reduce a lot of cost. One of the is "cladding valve".
They specify cladding valves such as:
- Body Carbon steel with Incoloy/inconel cladded, for gate/globe/check/ball type valves
- The ball of...
Dear All,
What is the best design for a pigged trunnion Full bore ball valve design. The valve is attached to the pig launcher and pig receiver (to isolate between the pig and the pipeline)
1. Soft seat vs metal seat?
2. Single piston effect vs double piston effect?
3. Any other special design...
The roof will be steel. And will be filled with Naptha. And the tank will not be heated.
We are still developing our project schedule. But I predict probably two weeks or a month before it is filled. Any suggestion so the inside shell of tank will not corrode? Using internal paint linning?
Currently we are designing a floating roof tank with the diameter of 80m and height of 20m. Due to the unfeasible source of fresh water, our client premitted us to do hydrotest by using seawater.
Since we are not familiar (experienced) with hydrotesting using seawater. We are still in searching...
What are your pressure, temp and corrosion allowance for the strainer?
Most strainers are made by Casting and Fabricated
Casting Strainer => The whole body are made by casting
Fabricated Strainer => The body are by pipe and fittings. The end body (the flanges & blinds) are by forging. Then...
Dear All,
I come across the requirement for soft seat valves (ie Ball, Butterfly etc).
Some requirement mention "Fire Safe Design" and some mention "Fire Tested Design".
I am getting confused. If those terms are same or not.
In my humble understanding that "Fire Tested Design" shall be...
We are currently handling a project for CNG that are cooled down until minus 30 deg C. The valves would use LTCS material.
We would like to have suggestion regarding the bonnet type. Is minus 30 deg C, can use normal bonnet or shall use extended bonnet?
I am thinking of using extended bonnet...
We are an EPC Contractor and it's our first time to design a CNG plant. We are currently having an intense discussion with my fellows about the requirement of Flare system for a CNG plant.
As many of the CNG facilities (mother and daugther station) existed, do not use flare system. And our...
Hi All,
Can anybody help explain why in the latest ASME B31.3 edition 2010. They delete Notes (7) in appendix A, which previously limits the temperature of the material?
Does it mean that after this deletion, we can use the material abouve the previously restricted temperature? As long we...
Currently I am looking towards a FEED for refrigerant CNG. The idea to cool down the CNG was to obtain the "optimum compression storage" between pressure and temperature.
My question is that on the material spec for class rating 150# and 300# they used SS 304L. But after compression, the rating...
Thanks for the answer.
For the "rod", I agree that it seems to be installed for mechanical purposes. Altough I am courious why using the "rod". Since the temperatur of the pipe is ambient. So expansion seems will not be an issue (?)
As for the "bracelet". I think is not used as mechanical...
Nope, doesn't address specifically to an CNG plant.
What does NFPA 70 address?
The NEC addresses the installation of electrical conductors, equipment, and raceways; signaling and communications conductors, equipment, and raceways; and optical fiber cables and raceways in commercial...
Does anybody have a reference of any code, standard, recomended practice etc? To design a CNG mother station safely.
I confused in designing the plot plan, whether the spacing of equipments is ok, too narrow or too wide. Thank you
Dear All,
I would like to know the mechanism how Cement Linning protect Carbon Steel from seawater corrosion. As I know, cement should have porosity. And through year the chloride content in the porosity will rise up, accelarating the corrosion? So what would be the estimated deign life time of...
