Pipeline number 2 the condition can be seen in Figure 2.2. Visual inspection is performed to detect the location of damage to the pipe. The result can be seen in Figure 2.3 to 2.6.
From the visual inspection, conclusions may be drawn as follows:
1.Found the depletion of the outer wall pipe likely caused by erosion.
2.Found any moderately thick crust is strong enough and adhere to the outside of a pipe not subjected to erosion.
3.Did not find any excessive safety deposit on the inside of the pipe.
4.Not invent the ravages of corrosion, on the inside of pipes as, pitting corrosion, caustic corrosion or other kind of corrosion which seriously make damage .
5.Not found the depletion part of wall pipe in damage and no proof pipe beginning from the pipe
To test the truth of the conclusion on the results of the visual inspection, can be conducted a series of Metallurgy tests.
Chemical composition and Hardness test.
This test aims to prove that there is no mistake in choosing the material the pipe is used. Specification of the material used for secondary super-heater pipe classified as SA-213-T12. Results of testing the chemical composition and the violence will be compared with the standard ASTM A213.
Results of testing chemical composition and hardness test with the standard specifications can be seen in Tables 2.4 and 2.5.
Conclusion can be drawn from the testing material pipe is material a pipe used according to the specifications as specified.
Continue to Metal Micro-structure analysis and Hardness test on Boiler Tube Research Part 3 (Super-Heater).
No comments:
Post a Comment