I am designing a tank whose calculations are already available on the internet but in an older version of API 650. Right now I am designing the roof, which is self supported cone roof. I am getting enormous thicknesses for the roof using The formula given in 5.10.5.1 of the last edition. if i...
Operating pressure: 2500psi
Temperature:50 celsius
Service: injectión water
Why would be needed to use a DBBV in a drain? Or 3 valves anda TEE fitting?
Thanks
Carlos F Molina
Hi
Is it valid to use a 3/4 DOUBLE BLOCK AND BLEED BALL VALVE as a drain? (I mean, with one of the ends directed to the atmosphere. From what I've read, these valves are used where there is flow or in a instrument, not in drains)
In which case one of these valves can be used in a drain...
Hi
I am auditing flow lines of new oil wells. Oil wells have a regular oil pipeline and a test pipeline.
What is the test pipeline for?
Thanks
Carlos Molina
Carlos F Molina
Hi.
The only one I know is this http://www.amazon.com/Quick-Certified-Storage-Inspector-Syllabus-ebook/dp/B00HLLN5ZS/ref=sr_1_1?ie=UTF8&qid=1444912826&sr=8-1&keywords=api+653
On the other hand, you can check my site www.apiexam.com
Carlos F Molina
Hi.
We have a new tank, 50000Bbls, 28,6m diameter, whose 4th course presents deformation o the plate to the inside. Tank has wind girder, course thickness is 6mm. The tank is built from the top-down. The tank now has all its 5 courses complete. The tank will have an IFR.
The reasons for...
Hi.
I am part of a company hired to oversee tank construction by a contractor. API 650 states that low hydrogen electrodes should be used if plates are thicker than 12.5mm. First and second courses of the tanks are thicker (19 and 15mm). Courses are A36 Steel. We remind the contractor that...
Hi.
I have set up a website for API certification exam takers. I am filling it with articles about the subjects that appear in the BOK for the API 653 exam. Today I wrote an article about a new computer-based-testing simulator I am developing . Maybe you can check it out in www.apiexam.com...
Hi. We are building a tank designed according to API 650 with 1,5psi internal pressure from nitrogen blanketing, except the roof, that is API620. The roof´s radius is 0,54D outside any type of roof considered in API 650, so is made according to API 620. Roof plates are 1/2 thick. Welds are full...
We have a 28m diameter new API 650 tank with a roof we need to air test. Considering the dangers of overpressure during the test, does anyone have a procedure for testing? One thing I know is that I could use a water syphon because of the low pressure involved. Thanks
Carlos Molina from...
Hi. I am a Colombian engineer. I want to know some things about the mentality overseas.
I work in an enterprise reviewing work from a contractor. The contractor performs all types of NDE for tanks. One thing they do is Radiographic testing. My bosses keep telling me to choose for NDE the welded...
Hi.
I´ve already looked for the response to this somewhat naive question in the forum.
Speaking to the residente engineer, we realized that we don´t know why we use ASTM A283 Gr C plate instead of, say, A36, for Aboveground Storage Tanks for oil. We never use other than A283. If weldability...
We are doing maintenance to a 50000bls tank in Meta, Colombia. There is some pipe in the plant´s yard, that we could use. Incidentally, I came across a document on the web mentioning the maximun corrosion rate for pipe according to ASME, but didn´t mention the code. Which code adresses this? Thanks
I have dakota ultrasonics and the dm4 ultrasonic thickness measuring device. I have calibration blocks. I was hoping for an answer like, for example:
Structural steel: ASME B999.9 (example: old thermoelectrical plant boilers being supported by an steel structure)
Pressure vessel: ASME section...
