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There are two type of scales: Calcium carbonate scale is usually located in the top of the wells from 2000ft and up. It looks similar to the scale you see around the heating element ...
The vent and sounding pipings are necessary to vent hull tanks and void spaces and provide a means to sound such tanks. All compartments in the hull should have a vent line and separate sounding l...
Gas flaring is typically allowed for up to 8 hours following a production shutdown or after the commissioning of topsides has been completed and during the operation of the topsides....
Oil process plant can be commissioned without any fluid. It is not possible to pressurize plant with water and run it. However, Gas Compressors can be run with Nitrogen in re‐circulation mode....
Sensitive leak test using Nitrogen/Helium shall be performed "onshore." To perform sensitive leak test "offshore": Use Nitrogen pressure test on LP systems (oil & produced water). A serv...
A 3-tier power system (emergency, essential and main) dual independent starting systems is not required on the main. If the essential and main generators services are combined, then dual independe...
For Chloride Stress Corrosion Cracking (SCC) to occur, one of the following criteria has to take place: Chloride content Oxygen level pH level Temperature Deterioration of materials’...
Not sure what is your scenario of hydrotesting the flanges, but leakage of any kind under any circumstances is NOT allowed according ASME B31.3 I my opinion, all flanges and joints previousl...
Here are some general recommendations for welding materials for tanks, piping systems, pressure containing equipment, internals for pressure vessels and piping: 1.    &nb..;.
The following equipment for handling of Sodium Hydroxide (caustic solutions) should be postweld heat treated: All equipment provided with heat tracing, with the exception of pip...
Lesson Learned: Turbine Blade Tip clearance increases will cause a drop in compressor efficiency. A good rule of thumb is a 1% increase in Blade Tip clearance will cause about a 1% drop in compress...
The short answer is NO. See the table below for more information on selection of materials used for Sour Service in the oil/gas production and processing facilities in order to mitigate hydrogen da...
No. For Micro-Alloyed Carbon Steels (vanadium, niobium, and titanium alloyed ferritic steels), the vanadium content should not exceed 0.05%, the niobium 0.05%, the titanium 0.02%, and their ...
Graphite is one of three crystalline forms of carbon, the other two are diamond and charcoal. Graphite has a hexagonal crystal structure, diamond is cubic, and charcoal is amorphous. Graphite is in...
This is the term used to indicate satisfactory completion of the installation scope of work. Mechanical completion should also be applied to the progressive completion of fabrication scope by syste...
  Advantages Disadvantages Tender Assist Drilling (TAD) Nonproprietary design Simple hull form Low co...
In order to size the knockout drum or scrubber appropriately, you should look at the potential liquid carryover for removing liquids from the vapor stream prior to vapor being sent to t...
I agree with the posts above that more information is needed. It seems that you are dealing with a repaired tank so I guess that is why you mentioned API-653....
For sizing a KO Drum or any pressure vessel for that matter, please follow ASME Section VIII Division I, II, III depending on the design conditions. API-521 will give you guidelines, recomme...
Critical Exposure Temperature (CET) is defined as the lowest metal temperature derived from either the operating or atmospheric conditions. The CET may be a single temperature at an operating pres...
The CET for pressure vessels is determined from the anticipated process and atmospheric conditions.The CET is defined as the lowest metal temperature at which a component will be subjected to a gen...
Additional CET for Piping:The CET for systems constructed to the ASME B31.3 Piping Code is defined as the lowest metal temperature at which a component will be subject to either 30 percent of the M...
Metal temperature for refrigerated storage tanks (above ground) and spheres is between +40°F and -270°F (+5°C and -168°C) and with pressures in their gas or vapor spaces not exceeding 15 psig (103 ...