Source Inspection Blog
This Blog is my mini-journal about newly published articles, and they are instantly indicated here as they being posted on the website. See below for last published articles:
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Paint dry film thickness measurement is addressed on SSPC-PA 2 and provides information to how to average the readings and determine DFT acceptability.
The surface dust test is performed after air blowing on the blast-cleaned surface and is done based on procedure outlined on ISO 8502-3.
The surface profile measurement by replica tape (Press-O-Film or testex tape) is performed after sandblasting to make sure the sandblasted surface has adequate profile.
The air compressor Blotter Test is performed before sandblasting process. The test can be performed with white absorbent paper.
The most of the coating specification requires that chloride testing ( Bresle Bresle patch Method) being performed before sandblasting.
SSPC-SP 7 Brush-off Blast Cleaning allows for a great amount of the original coating to remain on the surface and to roughen the surface prior to applying the new coating system.
SSPC-SP 6 commercial blast cleaning (NACE No. 3) allows for stains or shadows up to 33 percent of each unit area of surface to remain.
SSPC-SP 10 Near-white metal blast cleaning (NACE NO. 2) is to be used to clean unpainted or painted steel surfaces prior to applying a new protective coating and max 5% staining is allowed.
SSPC-SP 5 White metal blast cleaning (NACE No. 1) is to be used to clean unpainted or painted steel surfaces prior to applying high performance protective coating or lining systems.
SSPC-SP 3 power tool cleaning is frequently used when contamination to adjacent areas is a concern by sandblasting or is not feasible.
SSPC-SP 1 solvent cleaning is a specification that the Society for Protective Coatings (SSPC) has placed in order to prevent premature coating failure.
The coating inspection article explains about the chloride test, surface profile measurements, wet and dry film thickness measurement, etc.
The uninterrupted power supply testing (UPS Testing) shall be performed after completion of assembly in the manufacturing shop.
DC Power Supply Testing (Battery Charger FAT Testing) shall be performed after successful completion of assembly inspection at the manufacturing shop.
The switchgear testing (FAT Test) is performed after successful completion of assembly inspection.
The power transformer testing (FAT Test) is performed after completion of the assembly at the manufacturing shop.
he gas turbine generator testing is performed after successful completion of the assembly at the manufacturing shop.
The Induction motor testing (routine Testing or FAT Test) is performed after completion of assembly by the manufacturer.
This article describes about centrifugal compressor vibration testing, analysis and limits based on API Std. 617
The centrifugal compressor testing article explains about compressor mechanical running test and compressor aerodynamic performance test, impeller overspeed, casing inspection, gas leak test etc.
The API 617 requires the Centrifugal Compressor Aerodynamic testing being performed based on the requirement of ASME PTC 10 -1997. This article provides you with information about this test.
The pump impeller dynamic balancing is done based on API 610 requirements. The standard requires the balancing be performed based on ISO 1940-1 to the Grade G2.5
The pump casing hydrostatic test is performed after successful completion of the pump casing inspection.
The pump casing inspection starts with material inspection, nondestructive testing and ends with hydrostatic testing.
Pump mechanical run test is performed for 4 hours to proves pump work in stable condition and all variables are within acceptance range.
The pump net positive suction head test (NPSH test) isperformed to measure the ability of the pump to avoid cavitation in the inlet section of the pump.
The pump vibration testing is performed during performance test at different flowrates and also during the mechanical running test at the rated flow.
This content provides a sample pipe three layer polyethylene coating specification and highlights important inspection and testing requirements.
The valve backseat test is performed in the valve with backseat feature and it is similar to the valve shell test and the valve shall be fully opened and packing gland shall be loose.
In valve seat leak test one side (valve inlet or outlet) shall be subjected to the hydrostatic pressure and amount of leakage shall be measured on the opposite side of the valve.
The valve shell test is conducted by valve manufacturer and based on the requirements of API STD 598 ( Valve Inspection and Testing).
The welding map is the equipment sketch which identifies the welding seams and indicates what WPS shall be used for that particular welding seam.
The Nondestructive testing map identifies NDE method and location of the application on the equipment sketch.
The Nonconformity report is a supplementary document for source inspection report when a nonconformance being observed.
Material test report or Mill test report certifies that the chemical analysis and mechanical properties are in conformance with the specified specification.
This article explains about maximum allowable working pressure and its difference with design pressure in the ASME pressure vessel.
This article talks about Arithmetic Average Roughness Height in industrial surfaces such as flange face etc.
The objective of normalizing heat treatment is to enhance the mechanical properties of the material by refining the microstructure.
This article provides information about non-ferrous materials properties and applications such as Aluminum, copper, and nickel.