Elbow corrosion in the piping system
When we find that Erosion or Erosion-Corrosion Occurs in our piping system. Elbow area is one of the points where Flow hits and causes Erosion / Erosion-Corrosion. The simple way of looking at the wear (Eroded) or the thickness of the Elbow lost (Local-Thin Area) is the Grid UTM (Ultrasonic Thickness Measurement). This method will. This allows us to obtain both the profile of the remaining Elbow thickness and the ability to find the lowest thickness in the area by looking at the Thickness Profile obtained. In another example of the Grid UTM area Outside radius of Elbow before the … Continue reading Elbow corrosion in the piping system
API 650 / 653 – Tank Critical Zone
API 650 Storage Tank – Critical Zone in the Bottom; API 653 Storage Tank Inspection, Repair, Alteration, and Reconstruction Code requires the tank bottom to be within 3 inches from the tank shell to be a critical zone because the area must support the weight of the tank shell that is placed near the welding line. Shell-to-Bottom makes Tank-Bottom in this area highly stressed. Critical Zone will have special requirements for inspections, repairs or reconstruction. Continue reading API 650 / 653 – Tank Critical Zone
API 650 – Storage tank Nameplate requirements
API 650 Storage Tank – Nameplates; The Nameplate of the API 650 Aboveground Atmospheric Storage Tank as per Standard (para.10.1) specifies that the letters and numbers on the Nameplate must be at least 4 mm tall and the Nameplate must be welded or welded to the Tank Shell at the position near the Manhole or attached to the Reinforcing Plate of the Manhole. On the Nameplate, the Storage Tank must be specified as in the picture. Continue reading API 650 – Storage tank Nameplate requirements
API 510 Mechanical Clamp for Temporary Repair
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 Flange ASME B31.3 limitation
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 calculation for pressure vessel and piping (API 510, 570)
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)
Typical location of Corrosion on Heat Exchanger
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: Corrosion in Heat Exchanger Likely Location of Corrosion – Heat Exchanger Tubes at Baffle; Heat Exchanger Tubes in the Baffle Plates area are highly prone to corrosion. Due to the possibility of vibration of the Tubes causing friction with the Baffle (Vibration fretting) or Erosion from Fluid flow in Heat Exchanger For smaller tubes, The corrosion of the Tubes on the Baffle can be checked using a hammer. If the Tubes in the Baffle area is thin … Continue reading Typical location of Corrosion on Heat Exchanger
What is Pipeline Batching Pig
Pipeline – Batching Pig; Batching Pig is a pig with a seal in the pipeline. It is used to separate the liquid from the gas or medium in the pipeline, such as separating the liquid for chemical treating, so we don’t need to add the liquid throughout the length of the pipeline or use it to separate the product. Continue reading What is Pipeline Batching Pig
Pipe with Dual Grade
What is Dual Grade Stainless Steel Pipe: According to ASME BPVC Section II states that control the material characteristics such as mechanical properties (Mechanical Properties), chemical (Chemical, COMPOSITION), the Heat Treatment Through the provision of Grade supplies more than one Grade will be identified as Dual or Multiple Grade. For example, Dual Grade Stainless Steel Pipe, ASME SA-213 TP316 / 316L: Looking at the ASME SA-213 spec, you can see that 316L Low-Carbon Grade is defined to have the Carbon content lower than 316 Standard Grade, and at the same time requires that 316L have Min. Tensile Strength and Min. Yield Strength be lower. (Steel in general, if having less Carbon, will also have low Tensile Strength) This … Continue reading Pipe with Dual Grade
AMARINE 