The majority of mechanical equipment found in oil and gas facilities belongs to the static equipment group, which comprises pressure vessels (drums, columns, reactors, filters) and heat exchangers (shell and tubes, plate and frame, air coolers). This article will contain cost-effective recommendations for design, materials, and fabrication. They aim to enable the inspector/surveyors/engineer/purchaser who is not an equipment specialist, to check that economical choices are made. The specification and selection of the equipment is the responsibility of the static equipment engineer, based on requirements specified by other disciplines, including process, materials and plant layout. Let’s start with the review of … Continue reading What is Static equipment in Oil & Gas?
Selection and Treatment of Water and Conduct of the Test, to Maintain the integrity of the System is a priority concern in new-building or construction project. Specially on Stainless-steel which is very sensitive to corrosion. 1.0 Introduction Welded fabrications are frequently tested hydrotested for pressure tightness. Unless properly conducted, this procedure can induce problems. It is important to avoid initiating corrosion of the fabrication by subjecting it to critical conditions outside the initial design constraints. Where the vessel is to handle materials which are later ingested, contamination must be avoided. Damage may be caused by the induction of latent corrosion … Continue reading What is water standards for hydrostatic testing?
What is sour service? Sour service is referred to exploration and production environments in oil and gas that have enough H2S that could cause “CRACKING” of metallic materials. The oil and gas industry recognize sour service as one of the … Continue reading What is Sour Service in OIL & GAS?
Regarding What is Orifice and its application, please refer to FLOW METER AND ORIFICE PLATE Introduction of Erosion on Piping downstream around Orifice installation area: Typical erosion in piping systems often occurs on the flow with the exclusion of turbulence, for example. Where the flow direction changes (elbow, tee) or downstream of the orifice in the pipe system. In addition, Flow is a two-phase (with solid or liquid particles) and has a higher speed of erosion. In the Orifice installation area, the Flow Orifice (FO) is used to block the flow and reduce the pressure of Steam down to allow it to become condensate, but since Steam has passed from Orifice that cannot be fully condensed in this area, the turbulence of Flow will exist. Continue reading Orifice Installation Matter in the piping system
ASME Code Section VIII Div 1 exemption rules for ASME Impact Test Requirements: There are specific rules in the ASME Code for exemption from ASME Impact Test Requirement. This test is very expensive, so pressure vessel manufacturers are trying to be exempted from this costly test. You need to follow the following clauses to make exemption assessment for ASME impact test requirement: UG-20(f) →→ UCS-66(A) →→ UCS-66(b) →→→UCS-68(c) First, you have to keep your pressure vessel design data available and then refer to UG-20 (f). If you are exempted from this clause, you do not need to proceed further. But … Continue reading ASME VIII MDMT and Impact test exemption
There are 4 main reasons that cause corrosion in heat exchangers to need to be concerned during the inspection: Water impingement, Temperature, Vibration, Velocity. Refer to: Typical location of Corrosion on Heat Exchanger Cooling Water Corrosion in Heat Exchanger Tubes at High Water Temperature Zone; Another important factor affecting Corrosion in Heat Exchanger Tube Service at Cooling Water is the temperature. The area where the Cooling Water has a high temperature ( on the Outlet side ), there will be more fouling and corrosion than the low-temperature area. In the example, you can see from the corrosion that occurred in front of … Continue reading Corrosion in Heat Exchanger
Repair of Pressure Vessel – Mechanical Clamp; Mechanical Clamp can be used to repair leaks Pressure Vessel temporary (Temporary repair) by using the Patch Plate Holder with Bolts / Nuts tightly and Inject substance Sealant to prevent Fluid leaks out along the edge of the Patch Plate. In an example of the Mechanical Clamp and Pressure Vessel (deaerator) with Steam leak as below: Continue reading API 510 Mechanical Clamp for Temporary Repair
Slip-on Flanges Limits per ASME B31.3; In the ASME B31.3 Piping Code, restrictions on slip-on flanges are specified as follows: Use welding Double-Welded for Service that causes Severe erosion, Crevice corrosion, and Cyclic loading Service that is combustible, toxic and harmful to people Service at temperatures below -101 C 2. Do not Slip-on Flanges with Service with high pressure than ASME B16.5 Flange Class 2500. 3. Avoid Slip-on Flanges with Service that changes the temperature up – downtime (, Many the Large Temperature Contact of Cycle), especially with Flanges are not covered Insulation, which will cause a change in the temperature of the Flange and. Pipe quickly and may lead to thermal fatigue cracking … Continue reading Slip-on Flange ASME B31.3 limitation
Corrosion Rate for New Vessel and Service Change per API 510; According to API 510, “Corrosion Rate” for Pressure Vessel to be reinstalled or Pressure Vessel is changed. Service Conditions can be obtained. Use the Corrosion Rate of the Vessel that has the same or similar Service Condition The Corrosion Specialist is the person who estimates Or estimates the value from the published data such as API 581. Use the double thickness measurement to calculate the corrosion rate by the first time after the Vessel service for 3-6 months and the second time according to the appropriate period so that the value can be estimated Corrosion Rate. Corrosion Rate for New Piping and Service Change … Continue reading Corrosion Rate calculation for pressure vessel and piping (API 510, 570)