What is Backpressure, Superimposed Backpressure?
Backpressure of PRV; Backpressure is the pressure on the outlet side of the Pressure Relief Valve (PRV) which will affect the operation. Performance of PRV by Backpressure contains Superimposed backpressure and a Built an up backpressure: Superimposed Backpressure of PRV; Superimposed Backpressure is a static pressure on the outlet side of Pressure Relief Valve (PRV). There are both Constant and Variable. Continue reading What is Backpressure, Superimposed Backpressure?
What is Balanced Bellow of PRV
Balanced Bellow PRV; Balanced Bellow Pressure Relief Valve is The Conventional PRV with Bellow for reducing the impact of Backpressure from the Outlet of PRV makes PRV can be turned off as the Set pressure setting. Refer to: What is Backpressure testing of PRV? Refer to: What is Cold Differential Test Pressure (CDTP) on Conventional vs Bellow PRV To use Balance bellow PRV, open a vent hole on the Bonnet to monitor the leak of the Bellow and to reduce the impact of Backpressure on Set pressure in case of Bellow leak: How Balanced Bellow Work; Balanced Bellow is able to eliminate the impact of the Backpressure because the pressure from the Backpressure is applied to both sides of the Bellow and is offset. Continue reading What is Balanced Bellow of PRV
What is Test Gag of Pressure Relief Valve
Test Gag of Pressure Relief Valve; Test Gag is a bolt used for the spindle block of the pressure relief valve (PRV) to allow the PRV to be closed during the pressure test. The bolt should be tightened when the system has 80% of the pressure used. test (test pressure) to ensure that the PRV is closed at the test Pressure: Continue reading What is Test Gag of Pressure Relief Valve
Conventional Pressure Relief Valve Component (Intro)
“Conventional” Pressure Relief Valve Component; Conventional Pressure Relief Valve (PRV) has a duty to protect Vessel not to have the pressure exceeded ( Overpressure) by PRV will open to release pressure from the system when the voltage is greater than the pressure of the spring of PRV for Conventional Spring. -loaded PRV has the following components. Continue reading Conventional Pressure Relief Valve Component (Intro)
Pipe support – Spring Hanger (Notes)
Spring Support; Let’s get to know the different parts of Spring Support Pipe Supports Inspection – Spring Hanger 1; When checking the piping, don’t forget to check the spring coil damage Pipe Supports Inspection – Spring Hanger 2; Check the position of the Spring Hanger to be in the correct position where Cold position = In shutdown and fluid unloaded (Installation load), and Hot position = In operation (Operating load). Continue reading Pipe support – Spring Hanger (Notes)
What is RT film Density ?
RT Film Density Definition; Intensity (Density) of the Film from the Radiography Testing (RT) refers to the darkness of the RT film as measured by the amount of light that can penetrate RT film came to light that indicates that the Film with density is low, but if. Low light means that the film has a high density. RT Film Density Measurement; Measuring the intensity (Density) of the Film from the Radiography Testing (RT) can be achieved. Using a Densitometer to measure the amount of light that penetrates directly through the RT film, the device will display the number of film intensity Use Standard Film with different levels of intensity (Step Wedge Comparison Film) to compare with the intensity of our RT film … Continue reading What is RT film Density ?
Steam erosion on Flanges (Samples)
Steam Erosion at Flange / Gasket Face (Case Study 1); Erosion (Erosion-Corrosion) by Steam area Flange / Gasket Face of Tubesheet of Shell and Tube Heat Exchanger, so remember to check the area. Flange / Gasket Face thread. Steam Erosion at Flange / Gasket Face (Case Study 2); Another Case study of the Steam Erosion at Flange face (Gasket face) of Top Outlet Nozzle of Steam Tower. Continue reading Steam erosion on Flanges (Samples)
What is Cooling tower in refinery plant
Relate topic: What is CUI – Corrosion under insulation and on Cooling tower Cooling Tower Work; Cooling Tower to do evaporation of some water in the water system ( the Cooling the Water) cool by spraying (for Spray). Hot Cooling Water to flow through the air against the Packing to increase the contact surface between water and air. When the water and the air come in contact with each other, some water will evaporate and cool the cooling water. Cooling Tower Component; The main components of Cooling Tower include exhaust fans, pipes and fittings for the Spray Water Cooling water, Pack to … Continue reading What is Cooling tower in refinery plant
What is CUI – Corrosion under insulation on Cooling tower
CUI Locations Guideline in Vertical Vessel; The potential area for Corrosion Under Insulation (CUI) is the area where water can be trapped in the insulation or fireproofing. For the vertical vessel, there is a risk point as in the picture. Critical Factors a) It affects externally insulated piping and equipment and those that are in intermittent service or operate between: 1) 10°F (–12°C) and 350°F (175°C) for carbon and low alloy steels, 2) 140ºF (60°C) and 400ºF (205°C) for austenitic stainless steels and duplex stainless steels b) Corrosion rates increase with increasing metal temperature up to the point where the water … Continue reading What is CUI – Corrosion under insulation on Cooling tower
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