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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 The testing is to see if it produces. Thanks. Carlos F Molina

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. The tank has geodesic aluminium dome and IFR. 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 compiling some info in passing the Api 653 exam here Carlos F Molina

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...

Any ideas? Carlos Molina from http://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. Does anyone have a procedure on air testing? do you use water venturi? Thanks Carlos Molina from http://www.apiexam.com

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...

Hi. I purchased some bargain thickness measurement devices. In this point, I need to train someone to use them and, most importantly, know the standards involved. Which standards apply to minimum wall thickness of structural steel, pipe, pressure vessel, etc? I know naval industry uses insurance...

Unclesyd, can you explain that about grinding normal? why? Something i have to tell you is that PT we use it here 98% for fillet joints, requested by the client. So, the grinder will only reach the weld in the longitudinal way. Thanks in advance.