Category: OIL & GAS

API 510, API 570 - PI, OIL & GAS, PIPING3 Comments

What is Backpressure, Superimposed Backpressure?

Amarine Antonio

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?

API 510, CORROSION, OIL & GAS1 Comment

What is Cooling tower in refinery plant

Amarine Antonio

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

API 510, API 570 - PI, OIL & GAS1 Comment

Piping erosion by Steam

Amarine Antonio

Erosion by Steam and Condensate;  Erosion or erosion by Steam and Steam Condensate is caused by Steam / Condensate In our system, a two-phase state occurs: Steam vapor is mixed with condensate water. The reason why the two-phase is caused by: The steam loses heat and energy from running through pipes causing condense to be liquid condensate. Using Steam to heat exchangers in Heat exchanger devices causes liquid condensate to occur. Condensate water in the system is able to evaporate ( flash ) to steam vapor when the pressure in the pipe changes from high to low pressure, such as at the Steam Trap outlet. Continue to … Continue reading Piping erosion by Steam

API 510, API 570 - PI, CORROSION, OIL & GAS5 Comments

Erosion in Refinery, Petrochemical Plant

Amarine Antonio

Case I: Erosion in Pipeline Branch of line Medium pressure (MP) steam is separated to Steam trap occurs near Elbow ( the Elbow) at the point of impact of the Flow by Steam flow in Line that runs Steam trap that resembles a Two-phase.   Case II: Erosion at the opposite tee fitting of the Low-pressure (LP) steam condensate pipe is caused by the two-phase flow (Flash steam + Liquid condensate) from the pipes that condensate from the steam trap that is combined. Case III: When Liquid Condensate runs through the Control valve, some are turning to Flash steam becomes Two-phase flow and flow turbulence ( Turbulent) resulted from Erosion , especially at the point of impact on the joints of the various (Elbow, Tee).   Continue reading Erosion in Refinery, Petrochemical Plant

OIL & GAS, Shipbuilding A-Z3 Comments

What is Load test Safety Factor and Proof Test for Lifting devices?

Amarine Antonio

What is the safe working load (SWL)? Safe Working Load (SWL) is the limiting safety factor to lift and carry any load safely. It must be clearly marked on any lifting device (hoist, lifts, lifting machines, and lifting tackles). Marking System of Safe Working Load Lifting equipment should have a tally plate indicating the Safe Working Load. The tally plate also indicates the identification number which can be mentioned in the test certificate held by the user. It should also indicate the date of the last inspection. Safe Working Load ( Or WLL) of different types of sling are given in … Continue reading What is Load test Safety Factor and Proof Test for Lifting devices?

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What is Engineering Critical Assessment (ECA)?

Amarine Antonio

What is an ECA? Most welding fabrication codes specify maximum tolerable flaw sizes and minimum tolerable Charpy energy, based on good workmanship, i.e. what can reasonably be expected within normal working practices. These requirements tend to be somewhat arbitrary, and failure to achieve them does not necessarily mean that the structure is at risk of failure. An Engineering Critical Assessment (ECA) is an analysis, based on fracture mechanics principles, of whether or not a given flaw is safe from brittle fracture, fatigue, creep or plastic collapse under specified loading conditions. An ECA can, therefore, be used: During design, to assist … Continue reading What is Engineering Critical Assessment (ECA)?

Mechanical, OIL & GASLeave a comment

Portable hardness test tools

Amarine Antonio

There are several portable hardness testers available, with some more appropriate to certain situations than others. The particular hardness tester for the job would depend on what you needed to find out and why. For example, a Barcol hardness tester for use on Al alloys is generally used as a comparative tool; to indicate a loss in strength in damaged regions of a structure compared with undamaged regions or virgin material. Barcol hardness testers are very portable and are good for this type of comparative work, but the conversion to more widely recognized hardness scales is only approximate. Telebrineller testers. … Continue reading Portable hardness test tools

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BS 7448 vs ASTM E1820 CTOD fracture test

Amarine Antonio

Both BSI and ASTM have published standards for ‘combined’ fracture toughness test methods, allowing measurement of critical values of stress intensity (K), J and CTOD. The standards cover both ‘single-point’ values of fracture toughness and tearing resistance curves. BS 7448: Fracture mechanics toughness tests, is published in four parts: Part 1: ‘Method for determination of KIc, critical CTOD and critical J values of metallic materials’. Part 2: ‘Method for determination of KIc, critical CTOD and critical J values of welds in metallic materials’ – superseded by BS EN ISO 15653. Part 3: ‘Method for determination of fracture toughness of metallic materials … Continue reading BS 7448 vs ASTM E1820 CTOD fracture test

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VORTEX SHEDDING PREVENTION

Amarine Antonio

This Topic is support or building the fundamental knowledge to investigate and access the scour development and vibration around the offshore foundation and the others. In fluid dynamics, vortex-induced vibrations (VIV) are motions induced on bodies interacting with an external fluid flow, produced by – or the motion producing – periodical irregularities on this flow. They occur in many engineering situations, such as bridges, stacks, transmission lines, aircraft control surfaces, offshore structures, thermo-wells, engines, heat exchangers, marine cables, towed cables, drilling and production risers in petroleum production, mooring cables, moored structures, tethered structures, buoyancy and spar hulls, pipelines, cable-laying, members of jacketed structures, and other hydrodynamic and hydroacoustic … Continue reading VORTEX SHEDDING PREVENTION