Positions for Welding Pipe
For welding pipe in shops, power plants, oil refineries, and chemical plants for crude oil, gasoline, and natural gas, the same basic welding positions described previously are used.
Flat Butt Weld Pipe Position…
Equipments and materials for NDT lab set up
Radiography Testing:
1) X-Ray tube head -450 kV capacity ( only if construction of a exposure room with approval from government is possible)
2) RT Films (D4 )
3) lead screen 0.125mm, 0.25 mm
4) Film casettes
5) set of IQI -wire…
Acceptance Criteria for Liquid Penetrant Testing -LPT as per ASME , AWS and API standards
Liquid penetrant testing simply called as PT. Sometimes Dye Penetrant Testing is a surface defect detection NDT method and is more sensitive to all kind of surface defects, such as…
What is a cast iron?
Cast iron are ferrous alloys with greater than 2% carbon.
They also contain small amounts of other materials such as silicon, sulphur, manganese, & phosphorous.
In general it consists alloys of carbon & iron.
They are the least expensive of all metals and…
The following should be considered when selecting equipment for magnetic particle testing.
Is equipment for wet or dry method?
Magnetization requirements (AC or DC)
Demagnetization- incorporated or separate unit?
Ampere required.
Line voltage requirements.
Accessories needed or required.
WET HORIZONTAL EQUIPMENT
To obtain circular magnetization, the…
Standards for Piping Design and Inspection:
The original ASME B31 Code for
Pressure Piping was first introduced in 1935 as the single document for piping design.
In 1955, ASME began to separate the code into sections…
Ultrasonic Testing
In Ultrasonic Testing we use something called “Ultrasonic Vibrations” we must know two facts about a vibration:
A vibration is a back and forth movement.
A vibration is energy in motion
A depression of a surface from its normal position is called a displacement.
ACOUSTIC EMISSION TESTING (AET)
Acoustic Emission Test is a type of Non – Destructive Test method generally used for detecting and locating imperfections in mechanically loaded structures or components.
Flaw origination and progression in a stressed component can be identified by acoustic emission test method.This…
What is pressure vessel?
Pressure vessel is closed container which holds liquids or gasses at a pressure greater than the atmospheric pressure.
Definition of Pressure vessel as per ASME BPVC section VIII , Div 1, U1,
Pressure vessel are containers for containment of pressure, either external or…
LIQUID PENETRANT EXAMINATION (PT)
Pentrant Testing is surface defects detection method, the method can be used on any material ( i.e: Ferrous/ non-ferrous, conductive/ non conductive, metals/ non metals)
But PT is limited to materials having porous surface or very rough surface.
PT can be carried out…