PRESSURE TESTING SERVICES IN ANGOLA
EIWAA Oil and Gas Services is an Angolan third-party inspection and certification company providing pipeline, pressure, and hydro testing services. Among the pressure testing firms in Angola, we offer hydro testing, pipeline freezing, nitrogen, nitrogen purging, and pipeline freezing services. Pressure testing of pipelines, vessels, elbows, hoses, cargo hoses, pipelines, pipe spools, control valves, actuators, oil suction hoses, water hoses, skids, pressure vessels, manifolds, air compressors, etc. is provided by EIWAA oil and gas services. In Angola, our third-party inspection services include non-destructive testing, welding inspection, pipeline integrity, hydro and pressure testing, and other inspection services.
The hydro test or hydrostatic test is a type of pressure testing service used to demonstrate the integrity of a pressure vessel using a liquid medium. If necessary, a suitable corrosion inhibitor, chloride-controlled water, or a combination of these are used to prevent the possibility of damages due to the adverse effect of water on the pressure vessel material of its product service. Fluid may be used in the flushing or hydrostatic testing operation, which is typically clean/fresh water or treated fluid. Pneumatic testing is the process of using dry compressed air or inert gas and a water/soap solution to demonstrate the integrity of a pressure vessel, nozzle, chamber, reinforcement pads, etc. For hydro testing, it could be necessary to use a test pressure that is 1.5 times more than the design pressure or to account for both the design and test temperatures. The pressure ranges are monitored and indicated using two pressure gauges and pressure-temperature chart recorders.
PIPE FREEZING SERVICES IN ANGOLA
One of the top pipe freezing companies in Angola, EIWAA Oil and Gas Services, offers the safest and most cost-effective way to maintain or repair piping systems by temporarily isolating a certain area. Draining down systems to avoid time-consuming venting processes is not preferred for any kind of piping modification work or maintenance services. In power plants and storage tank terminals, pipe freezing services save oil and eliminate the need to schedule bulk transfers or storage of hazardous liquids. Angola’s pipe freezing services provide safe maintenance without causing processing system disruptions. Water, acid, fuel oil, paints, and coolants are examples of common pipe contents.
The process for pipe freezing services in Angola includes making metal jackets that fit the pipe’s dimensions and covering it. Use specially designed nozzles to inject liquid nitrogen into the jackets when the temperature drops to -ve and the liquid N2 freezes the pipe. Without liquid draining, the pipe can undergo the necessary pipe adjustments. Pipe freezing services could work better if the diameter falls between ¼” and 24″. If the pipe size is more than 24″, the temperature is medium or higher, the liquids have a different freezing point, or the pipe is too small or has complicated design, pipe freezing services might not be appropriate.
NITROGEN SERVICES IN ANGOLA
EIWAA Oil and Gas Services offers comprehensive nitrogen services in Angola, including nitrogen helium leak testing at major power plants and refineries, nitrogen purging services, and nitrogen leak testing services. EIWAA is the company to call if you need nitrogen purging services in Angola for nitrogen filling, nitrogen lifting, and nitrogen pressure testing. They can handle all of your nitrogen needs. At oil and gas fields and power facilities, N2 purging services are utilized to replace a dangerous atmosphere with an inert dry atmosphere. Our nitrogen filling and purging services can be used to remove undesired gases from all of Angola’s major storage tank terminals, either by displacement or dilution. This helps to provide a safe and controlled environment. Pigging, pressure drying, pressure transfer, pipeline cleaning, lowering oxygen in lines, maintaining gas purity, and averting explosive reactions are all done with nitrogen purging services in Angola, also known as N2 purging services.
One method for cleaning and preparing oilfield pipelines using nitrogen gasses is nitrogen purging services. Nitrogen filling services eliminate moisture, pollutants, and other foreign impurities while extending the equipment and pipeline’s remaining life assessment period. In order to guarantee integrity or performance, our nitrogen pressure testing services in Angola assist in locating possible leaks or weaknesses. Major power plants, pipelines, vessels, and other pressure-containing equipment in Angola all make extensive use of nitrogen pressure testing services. N2 Nitrogen is used for purging in Angola since it is an inert gas, meaning it doesn’t react with other gases. Some main applications of Nitrogen Flushing is as follows,
- Nitrogen Blanketing services for ships and vessels at major ports.
- Nitrogen Purging Services for transformers and volatile electrical systems in power plants and refineries.
- Pipeline drying and purging services to control oxygen concentrations especially used in pipeline Maintenance services
- Nitrogen Helium Leak Testing Services
AIR LEAK TESTING SERVICES
While a hydrostatic test employs water as the test medium, a pneumatic test uses air, nitrogen, or any other non-flammable and innocuous gas. High pressure testing must always be carried out under supervision, following an authorized test plan, and being documented in a test record. A single approved test plan may be used to conduct several similar tests, but each test needs to have its own test record.
- Hydro Test
- Pneumatic Test
In compliance with the requirements of the ASME/API Code, EIWAA Oil and Gas consistently uses temperature/pressure test recorders, chart recorders, and calibrated pressure gauges. In order to perform corrosion surveys and pipeline remaining life assessments, pipeline inspection services must employ ultrasonic thickness gauging in accordance with API 570 Inspection Standards. In line with API 650/API 653, Most oil and gas services have a connection between pipeline testing, in-service inspection, and the Fit to Use assessment of storage tanks. NDT testing, pipeline deflection dimensional measurements, and piping pressure testing and certification are all included in Angola’s hydro testing service.
FREQUENTLY ASKED QUESTIONS
Pressure temperature chart is a permanent record of pressure test and piping inspection services. As a civil defense approved company, third party certification of storage tank and piping shall be performed by hydro testing and pressure testing, NDT Inspection of Magnetic Particle Testing, Ultrasonic Testing and Penetrant Testing.
To mark off the areas for the hydro test, use tigger tape and caution signs. The parts of a system should never be hydro tested against a closed valve. While the hydro test pressure is being built, maintain a minimum distance of 3 meters (m) between the vessel and any additional fittings (flanges, couplings).Consider using a suitable wetting agent when hydro testing large vessels to eliminate surface tension and air pockets .Build up the hydro test pressure gradually so that the piping has time to equalize tensions prior to the hydro test.
Radiography Test or Ultrasonic Testing is the best NDT Method prior to use pressure test.