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Proceedings Papers

AM-EPRI2016, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Eighth International Conference, 260-270, October 11–14, 2016,
... B and Alloy C263, which was a part of HWT II test rig, were investigated using nondestructive and destructive techniques. Furthermore, the damage has been considered and evaluated by using numerical methods. In addition, different lifetime assessment methods of standards and recommendations...
Proceedings Papers

AM-EPRI2013, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Seventh International Conference, 1256-1267, October 22–25, 2013,
... Abstract Both non-destructive and traditional microsectioning techniques have been used to measure the oxide thickness of steam grown oxides between two close contacting surfaces. Different power plant materials, nickel based alloys and ferritic-martensitic steels, were exposed to steam...
Proceedings Papers

AM-EPRI2016, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Eighth International Conference, 137-148, October 11–14, 2016,
... in terms of creep life consumed. Those findings suggested that the creep life assessment of Ni-based alloys would be possible by means of hardness measurement. The paper also deals with the role and perspective development of non destructive damage detecting techniques, and life assessment issues on Ni...
Proceedings Papers

AM-EPRI2019, 2019 Joint EPRI – 123HiMAT International Conference on Advances in High-Temperature Materials, 1079-1089, October 21–24, 2019,
... because of flexible operation. Therefore, there is a growing need for weld repair techniques including those which do not mandate post weld heat treatment (PWHT), e.g. so-called ‘temper bead’ weld repair. In this study, a simulated weld repair was performed using a temper bead technique. The maximum...
Proceedings Papers

AM-EPRI2013, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Seventh International Conference, 1206-1219, October 22–25, 2013,
... for a plant with 30 years of Service. Inspection Interval (Years) Damage Classification Wedel-Neubauer EPRI-APTECH Undamaged 5 27 A. Isolated Cavities 3 12 B. Oriented Cavities 1.5 5.4 C. Linked Cavities (Microcracks) 0.5 1.8 D. Macrocracks Repair Immediately Based on fracture mechanics Destructive Techniques...
Proceedings Papers

AM-EPRI2013, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Seventh International Conference, 960-972, October 22–25, 2013,
... martensitic 9-12%Cr steels are reviewed and compared. And also since the non-destructive creep life assessment techniques for the Type IV creep degradation and failure in high strength martensitic 9-12%Cr steel welds are not yet practically established and applied, a candidate way based on the hardness creep...
Proceedings Papers

AM-EPRI2004, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Fourth International Conference, 720-732, October 25–28, 2004,
... Abstract High-pressure and high-temperature piping in fossil power plants suffer from unexpected and rarely predictable failures. To prevent failures and ensure operational safety, a Quantitative Acoustic Emission (QAE) non-destructive inspection (NDI) method was developed for revealing...
Proceedings Papers

AM-EPRI2016, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Eighth International Conference, 516-529, October 11–14, 2016,
.... Also to Shane Maskill for providing access to creep data and the test rigs for analysis. REFERENCES [1] G. Sposito, C. Ward, P. Cawley, P. B. Nagy, and C. Scruby, A review of non-destructive techniques for the detection of creep damage in power plant steels, NDT E Int., vol. 43, no. 7, pp. 555 567...
Proceedings Papers

AM-EPRI2024, Advances in Materials, Manufacturing, and Repair for Power Plants: Proceedings from the Tenth International Conference, 304-315, October 15–18, 2024,
... surfaces. Additionally, ash accumulates on the tube surfaces and reacts with sulfur components in the combustion gas, forming liquid sulfides on the tube surfaces, significantly increasing the corrosion rate, known as hot corrosion. 304 Development of Techniques and Devices for Measuring Boiler Tube Wall...
Proceedings Papers

AM-EPRI2019, 2019 Joint EPRI – 123HiMAT International Conference on Advances in High-Temperature Materials, 315-326, October 21–24, 2019,
...-specs as Type II which sets stricter chemistry requirements for Grade 91 (9Cr-1Mo-V) material. The implications of chemical composition on the creep behavior and detectability of damage using non-destructive phased array techniques in Grade 91 cross-welds is deliberated in the discussion section...
Proceedings Papers

AM-EPRI2010, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Sixth International Conference, 554-570, August 31–September 3, 2010,
... determine if T91 steel achieves the necessary microstructure and properties for service. Additionally, rejected parts can be assessed for microstructural issues causing unacceptable properties. The techniques utilize a common electronic setup with different sensors, requiring calibration for specific NDE...
Proceedings Papers

AM-EPRI2019, 2019 Joint EPRI – 123HiMAT International Conference on Advances in High-Temperature Materials, 1090-1097, October 21–24, 2019,
... on the described butt welds started at the tube s inner surface and were therefore not detectable by penetration testing (PT) or similar non-destructive techniques. Since at the time no other SRC damages had been known or reported for the described 25% Chromium stainless tubes, additional investigations were...
Proceedings Papers

AM-EPRI2019, 2019 Joint EPRI – 123HiMAT International Conference on Advances in High-Temperature Materials, 1314-1321, October 21–24, 2019,
...-destructive inspections applicable to actual plants. This paper investigates nucleation and growth behavior of Laves phase precipitation in high chromium steels associated with thermal aging. Selective dissolution technique to detect and evaluates Laves phase is of concerns and variation of electrochemical...
Proceedings Papers

AM-EPRI2013, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Seventh International Conference, 53-59, October 22–25, 2013,
... developmental tasks will be undertaken, including development of end covers, establishment of circumferential seam welding procedures between end cover and pipe, establishment of fillet welding process for stub to pipe 57 welding and establishment of advanced ultrasonic testing techniques for the detection...
Proceedings Papers

AM-EPRI2024, Advances in Materials, Manufacturing, and Repair for Power Plants: Proceedings from the Tenth International Conference, 183-194, October 15–18, 2024,
... Abstract As part of a Department of Energy (DOE) funded program assessing advanced manufacturing techniques for Small Modular Reactor (SMR) applications, the Nuclear Advanced Manufacturing Research Centre (AMRC) and the Electric Power Research Institute (EPRI) have been developing Electron Beam...
Proceedings Papers

AM-EPRI2013, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Seventh International Conference, 9-23, October 22–25, 2013,
... testing basic investigations have been done to characterize the aged material. Complimentary to COMTES700 different heat treatments (pre-/post-) will be applied and a trial weld of each material combination and/or welding method will be tested destructively. Trial welds will be carried out and all those...
Proceedings Papers

AM-EPRI2016, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Eighth International Conference, 1182-1193, October 11–14, 2016,
... is demonstrated in selected figures below. Hardness tests Hardness measurement is one of the few low cost non-destructive evaluation techniques which may provide an indication of the heat treated condition of a material. Test coupons were subjected to a cross weld section matrix hardness measurement to determine...
Proceedings Papers

AM-EPRI2024, Advances in Materials, Manufacturing, and Repair for Power Plants: Proceedings from the Tenth International Conference, 397-408, October 15–18, 2024,
... to welding. Some of the samples had what appear to be small lamination defects in them. One irradiated welded sample has been tested to date with no cracking detected, which has been confirmed by destructive examination. austenitic stainless steel cracking grain boundaries heat-affected zone nickel...
Proceedings Papers

AM-EPRI2010, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Sixth International Conference, 393-407, August 31–September 3, 2010,
... no inspection challenges to the ultrasonic inspection process. Similar studies using these standard non-destructive evaluation (NDE) techniques on cast 316 stainless steel have shown the material to be un-inspectable. 401 Weldability Another factor that was considered paramount for consideration of components...
Proceedings Papers

AM-EPRI2013, Advances in Materials Technology for Fossil Power Plants: Proceedings from the Seventh International Conference, 1006-1015, October 22–25, 2013,
... EXPERIENCE ON USC BOILERS For the thick wall components, the welding process is a key technique in boiler fabrication. Narrow gap HST welding technology developed by Babcock-Hitachi K.K., is widely used for thick wall boiler headers and piping of high alloy steels in both of our workshop and erection sites...