Tests on Thermowell
- Material Test
- Dimensional Test
- Hydrostatic Pressure Test
- Dye Penetrant Inspection
Chemical- By PMI(Positive Material Identification).
Physical- By Tensile, Elongation, Hardness, Micro & Macro examination, IGC tests.
The Thermowell must be checked according to specified dimension given in drawing.
A hydrostatic pressure test is a way in which leaks can be found in pressure vessels such as pipelines and plumbing. The test involves placing water, which is often dyed for visibility, in the thermowell at the required pressure to ensure that it will not leak or be damaged.
It is the most common method employed for testing pipes and vessels. Using this test helps maintain safety standards and durability of a vessel over time. Newly manufactured pieces are initially qualified using the hydrostatic test.
Dye penetrant inspection (DPI), also called liquid penetrant inspection (LPI) or penetrant testing (PT), is a widely applied and low-cost inspection method used to locate surface-breaking defects in all non-porous materials (metals, plastics, or ceramics).
LPI is used to detect casting, forging and welding surface defects such as hairline cracks, surface porosity, leaks in new products, and fatigue cracks on in-service components.
Radiographic Testing (RT), or industrial radiography, is a nondestructive testing (NDT) method of inspecting materials for hidden flaws by using the ability of short wavelength electromagnetic radiation (high energy photons) to penetrate various materials. irregularities and flows that can be detected which includes - cracks, voids, thickness, lack of fusion, lack of penetration, porosity and misalignment.