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Friday, July 10, 2020 | History

2 edition of Metallographic and hardness examinations of TMI-2 lower pressure vessel head samples found in the catalog.

Metallographic and hardness examinations of TMI-2 lower pressure vessel head samples

G. E. Korth

Metallographic and hardness examinations of TMI-2 lower pressure vessel head samples

by G. E. Korth

  • 39 Want to read
  • 15 Currently reading

Published by Division of Systems Research, Office of Nuclear Regulatory Research, U.S. Nuclear Regulatory Commission, Supt. of Docs., U.S. G.P.O. [distributor] in Washington, DC .
Written in English

    Subjects:
  • Three Mile Island Nuclear Power Plant (Pa.),
  • Nuclear pressure vessels -- Testing.

  • Edition Notes

    Statementprepared by G. E. Korth.
    ContributionsU.S. Nuclear Regulatory Commission. Office of Nuclear Regulatory Research. Division of Systems Research., Idaho National Engineering Laboratory., EG & G Idaho.
    The Physical Object
    Pagination1 v (various pagings) :
    ID Numbers
    Open LibraryOL14703114M

    The strakes of a pressure vessel had not been normalised prior to welding. TWI carried out metallography and other laboratory methods to test microstructure and properties by performing an on-site metallographic examination of the strakes and carrying out laboratory tests. Results showed the microstructures and properties of the strakes to. Pressure Vessel RT Test - Why do pressure vessel manufacturers want to spent more money for full radiography in item # 4? Because the joint efficiency in the full radiography condition is 1, the higher joint efficiency in the pressure vessel wall thickness formula causes less wall thickness.

      A Few More Important Types of Pressure Vessel Heads. Pressure vessels may also be designed with any of the following head types: Flat Heads: These heads have flat surfaces, which makes them ideal for applications that demand flat inside surfaces. Flat heads are considered ideal for no pressure applications, when used for pressure applications, these pressure vessel heads may be . Design and Registration Services at PVEng. ASME Code Design – We work to many ASME standards to design and validate pressure vessels, boiler, fittings and piping systems.. Compress, PV Elite, DesignCalcs and our own in-house software; ASME VIII-1, VIII-2, I, IV, B, B, B

    Pressure Vessel Design and Calculators. Torispherical head: These heads have a dish with a fixed radius (r1), the size of which depends on the type of torispherical head. The transition between the cylinder and the dish is called the knuckle. The knuckle has a toroidal shape. Many high-pressure vessels contain deep bores, thick sections, complex geometries, or miniscule cracks that can affect equipment safety or lifetime. Non-destructive examination (NDE) techniques assess high-pressure vessel designs and equipment for fitness-for-service.


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Metallographic and hardness examinations of TMI-2 lower pressure vessel head samples by G. E. Korth Download PDF EPUB FB2

Results of Examinations of Pressure Vessel Samples and Instrument Nozzles from the TMI-2 Lower Head" by G. Korth idaho National Engineering Laboratory EG&G Idaho, Inc.

Idaho Falls, ID and D. I_ Diercks and L. Neimark Energy Techn,_logy Division Argonne Nationhi Laboratory Argonne, IL NOV08 1o93" 0 8"I"1 October DISCLAIMER. Get this from a library. Metallographic and hardness examinations of TMI-2 lower pressure vessel head samples.

[G E Korth; U.S. Nuclear Regulatory Commission. Office of Nuclear Regulatory Research. Division of Systems Research.; Idaho National Engineering Laboratory.; EG & G Idaho.].

Technical Report: TMI-2 lower head creep rupture analysis. Results of examinations of pressure vessel samples and instrument nozzles from the TMI-2 lower head.

TMI-2 REACTOR VESSEL LOWER HEAD HEATUP CALCULATIONS. INTRODUCTION. On Mathe Three Mile Island Unit 2 (TMI-2) nuclear reactor experienced a small-break loss-of-coolant accident (LOCA).

The accident eventually led to uncovery, rapid heatup, and degradation of the core. Korth, G. E.,“Peak Accident Temperatures of the TMI-2 Lower Pressure Vessel Head,” Contribution to the TMI-2 Vessel Investigation Project Integration Report, NUREG/CR Kumar, R.

et al.,“Intermediate Scale Combustion Studies of Hydrogen-Air-Steam Mixtures,” EPRI Report NP Abstract. As part of the Three Mile Island Unit 2 (TMI-2) Vessel Investigation Project, funded by the Organization for Economic Cooperation and Development, physical, metallurgical, and radiochemical examinations were performed on samples of previously molten material that had relocated to the lower plenum of the TMI-2 reactor during the accident of 28 March   ELSEVIER Nuclear Engineering and Design () Nuclear Engineering and Design Results of examinations of pressure vessel samples and instrument nozzles from the TMI-2 lower head G.E.

Kortha, D.R. Diercksb, L.A. Neimarkb aldaho National Engineering Laboratory, PO BoxIdaho Falls, IDUSA bEnergy Technology Division, Argonne National Laboratory. The accident at Three Mile Island Unit No. 2 (TMI-2) on Ma was the worst nuclear accident in US history.

One of the tasks of the internati. Fifteen steel samples were removed from the lower pressure vessel head of the damaged TMI-2 nuclear reactor to assess the thermal threat to the head posed by 15 to 20 metric tons of molten core.

Results of metallographic examinations and mechanical tests of pressure vessel samples from the TMI-2 lower head. @article{osti_, title = {TMI-2 lower head creep rupture analysis}, author = {Thinnes, G L}, abstractNote = {The TMI-2 accident resulted in approximately 40% of the reactor's core melting and collecting on the lower head of the reactor pressure vessel.

The severity of the accident has raised questions about the margin of safety against rupture of the lower head in this accident since all. Metallographic and hardness examinations of TMI-2 lower pressure vessel head samples lower pressure vessel head of the damaged TMI-2 nuclear reactor to assess the thermal threat to the head.

Metallographic examinations and mechanical tests have been completed on specimens from 15 prism-shaped samples cut from the lower head of the TMI-2 pressure vessel as a part of the TMI-2 Vessel.

Theoretically, a sphere would be the best shape of a pressure vessel. Unhappily, a spherical shape is tough to manufacture, therefore more expensive, so most pressure vessels are cylindrical with semi-elliptical heads or end caps on each end.

Smaller pressure vessels are. In Decemberthere will be the publication of Arti "Acoustic Emission Examination of Metal Pressure Vessels" (Section VIII).

Acoustic emission nondestructive methods are numbered as Examination Articles 11 & 12 in Section V of the ASME Boiler and Pressure Vessel Code.

These articles provide the method for detecting and mapping. Metallographic examinations and mechanical tests 15 years after the accident revealed that the molten material reached temperatures greater than °C and the lower head vessel inside-surface.

There is no hardness testing requirement for PWHT in ASME Boiler and Pressure Vessel Code and Standards. Most engineering fabrication specifications for creep strength enhanced ferritic steels require hardness testing to ensure proper hardness as a means to verify PWHT has been performed correctly.

ELSEVIER Nuclear Engineering and Design () Nuclear Engineering and Design Results of examinations of pressure vessel samples and instrument nozzles from the TMI-2 lower head G.E. Kortha, D.R. Diercksb, L.A. Neimarkb aldaho National Engineering Laboratory, PO BoxIdaho Falls, IDUSA bEnergy Technology Division.

Physical and Radiochemical Examinations of Debris From the TMI-2 Lower Head,” Diercks, D. R., and. Korth, G. E.,“ Results of Metallographic Examinations and Mechanical Tests of Pressure Vessel Samples from the TMI-2 Lower Head,”.

Fig. 9 shows data collected to °C for two stainless steel samples (SS-A and SS-B.). The data for the two samples are very consistent, showing about 1% variation for temperatures above °C.

Download: Download full-size image; Fig. 9. Thermal expansion data for two SS samples heated to °C. Test samples were approximately 12 mm in diameter and ranged from 2 to 4 mm thick. Handbook of Stainless Steel, McGraw-Hill Book Company, New York () p.

19– Google Scholar. J.C. Spanner, et al., Nuclear Systems Material Handbook, TID, April Metallographic and Hardness Examinations of TMI-2 Lower Pressure Vessel Head.Extending the Internal Examination Intervals for Pressure Vessels using an RBI Approach Philippa Moore and John Wintle Paper presented at ASME Pressure Vessels and Piping Conference, Sustainable Energy for the Third Millennium, Prague, Czech Republic, July