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3 edition of Pressure and leak-rate tests and models for predicting failure of flawed steam generator tubes found in the catalog.

Pressure and leak-rate tests and models for predicting failure of flawed steam generator tubes

Pressure and leak-rate tests and models for predicting failure of flawed steam generator tubes

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

    Subjects:
  • Steam-boilers -- Testing.,
  • Pressure vessels -- Testing.,
  • Nuclear power plants -- Piping -- Cracking.

  • Edition Notes

    Statementprepared by S. Majumdar, K. Kasza, J. Franklin ; prepared for Division of Engineering Technology, Office of Nuclear Regulatory Research, U.S. Nuclear Regulatory Commission.
    ContributionsKasza, K., Franklin, J., Argonne National Laboratory., U.S. Nuclear Regulatory Commission. Office of Nuclear Regulatory Research. Division of Engineering Technology.
    The Physical Object
    FormatMicroform
    Paginationxxi, 103 p.
    Number of Pages103
    ID Numbers
    Open LibraryOL17716841M

      The pressure wave will dissipate naturally, and very quickly, due to the associated flow losses. After that, it seems to me that the only pressure in that coil line would be hydrostatic pressure from the vertical fluid column (from the panel down to the hypothetical rupture point).   The licensee determined that there was a high probability of several Unit 3 steam generator tubes failing the in-situ pressure test. In-situ testing was conducted from March 13 to Ma The licensee accurately ranked each tube according to the probability of failure, and the top eight tubes with the highest probability of failure did.

    Double-ended failure of a steam generator tube: sequence of events and key assumptions Steam line break with one steam generator tube failed: sequence of events and key assumptions. NUREG/CR xv l. Steam line break with 15 steam generator tubes failed: sequence of events and key assumptions. U.S. PWR IPE. The right answer is to relax back pressure on the stick, fly toward the ground, recover the wings, level them out, and then slowly reapply the pressure so you miss the ground. We wanted to make an airplane where, if you do pull the stick back, as is the pilot’s natural reaction, it doesn’t get worse.

      [FR Doc. Filed ; am] BILLING CODE P DEPARTMENT OF HEALTH AND HUMAN SERVICES Food and Drug Administration 21 CFR Part [Docket No. FDAN] New Animal Drugs; Change of Sponsor's Name and Address AGENCY: Food and Drug Administration, HHS. ACTION: Final rule. SUMMARY: The Food and Drug Administration (FDA) is . This banner text can have markup.. web; books; video; audio; software; images; Toggle navigation.


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Pressure and leak-rate tests and models for predicting failure of flawed steam generator tubes Download PDF EPUB FB2

Pressure and Leak-Rate Tests and Models for Predicting Failure of Flawed Steam Generator Tubes (NUREG/CR) On this page: Publication Information; Abstract; Download complete document. NUREG/CR (PDF - MB) Publication Information. Manuscript Completed: June Date Published: August Prepared by: S.

Majumdar, K. Kasza, J. Get this from a library. Pressure and leak-rate tests and models for predicting failure of flawed steam generator tubes. [S Majumdar; K Kasza; J Franklin; Argonne National Laboratory.; U.S. Nuclear Regulatory Commission.

Office of Nuclear Regulatory Research. Division of Engineering Technology.]. @article{osti_, title = {Validation of failure and leak rate correlations for stress corrosion cracks in steam generator tubes.}, author = {Majumdar, S and Bakhtiari, S and Kasza, K and Park, J Y}, abstractNote = {This report summarizes models for the prediction of failure pressures and leak rates under normal operation and design-basis accident conditions in steam generator tubes with.

@article{osti_, title = {Failure Pressure and Leak Rate of Steam Generator Tubes With Stress Corrosion Cracks}, author = {Majumdar, S and Kasza, K and Park, J Y and Bakhitiari, S}, abstractNote = {This paper illustrates the use of an 'equivalent rectangular crack' approach to predict leak rates through laboratory generated stress corrosion cracks.

Validation of Failure and Leak-Rate Correlations for Stress Corrosion Cracks in Steam Generator Tubes. failure and leak rate tests at room temperature and at C on tubes with rectangular. It is requested that steam generator tubes with defects exceeding 40% of wall thickness in depth should be plugged to sustain all postulated loads with appropriate margin.

This critical defect size has been determined based on a concept of plastic instability, however, which is known to be too conservative for some locations and types of by: 2.

This paper presents a prediction of load-bearing capacity of flawed steam generator tube using numerical analysis. Alloy TT steam generator tube with diameter of mm and thickness of mm widely used in nuclear power plants is considered in this study. Sound tubes and through-wall cracked tubes are used in tensile : J.

Jeon, J. Kim, Yun-Jae Kim, J. Kim. This report summarizes models for the prediction of failure pressures and leak rates under normal operation and design–basis accident conditions in steam generator tubes with axial and circumferential cracks. These models were first validated through failure and leak rate tests at room temperature and at.

Pressure and Leak-Rate Tests and Models for Predicting Failure of Flawed Steam Generator Tubes,” U.S. Nuclear Regulatory Commission, Washington, DC, Report No. NUREG/CR by: 3. Int. Pres. Ves. & Piping 25 () Flaw Analysis in Steam Generator Tubes J.-P.

Hutin Electricit6 de France SPT, 3 Rue de Messine, Paris, France and F. Billon Framatome, Tour FIAT, Ce Paris La D&ense, France ABSTRACT This paper presents the flaw assessment programme undertaken in France for PWR steam generator tubes affected by stress corrosion by: 2.

Accurate estimation of the failure pressure is a key element of the structural integrity assessment. Pressure and leak-rate tests and models for predicting failure of flawed steam generator.

A high-temperature ( C), high-pressure (18 MPa), and high-leak rate ( L/min) facility, and a room temperature, high-pressure (52 MPa) test facility were used to test flawed steam generator tubes. Single and multiple rectangular flaws were fabricated by electro-discharge machining on the outside surface of the tubes.

This paper briefly reviews analytical methods for predicting ligament Cited by: 1. Tests were conducted to determine the effect of pressurization rate on rupture of flawed tubes. Based on analysis and tests, failure maps were developed that delineate ranges of ligament and crack sizes that could be susceptible to ligament rupture and/or unstable burst due to pressure drops of ΔP NO (normal operation), ΔP MSLB (main steam.

Steam generator in a nuclear power plant is huge heat exchanger that transfers heat from reactor to make steam to drive turbine-generator. Failure of the steam generator tubes can result in the release of fission products to the secondary side.

Therefore, accurate integrity assessment of the cracked steam generator tubes is of great importance for maintaining the safety of the nuclear power : Hyun Su Kim, Tae Eun Jin, Hong Deok Kim, Han Sub Chung, Yoon Suk Chang, Young Jin Kim.

Assessment of Leak Rates through Steam Generator Tubes Final Report October 8, to J PRINCIPAL INVESTIGATOR: SHRIPAD T. REVANKAR PURDUE UNIVERSITY School of Nuclear Engineering West Lafayette, IN [email protected] Contributing Authors: S.

Revankar, Brian Wolf and Anand Vadlamani PURDUE UNIVERSITYFile Size: 4MB. Mitsubishi Heavy Industries (MHI), the supplier that sold four new steam generators to Southern California Edison (SCE) for the San Onofre Nuclear Generating Station (SONGS), has issued a redacted version of its root cause analysis of the u-tube failures that have kept both of the station’s MWe units shut down since Janu My analysis of the report tells me that a large.

Steam Turbine Operation The high pressure region of a turbine is working at pres - sures as high as bar, while the low pressure region operates at a pressure of to bar. Turbine back pressure is a key parameter in steam to power efficiency. The typical. Paffel believes that steam lines should last years and condensate lines should last 30 days.

Hoses should never leak. Valves are a prime source of steam leaks. Paffel showed how one leaking valve can cost $11, per year. The primary reason valves leak is because they are purchased based on price rather than the leak rate.

These calculations typically assume complete tube failure with a leak rate of over gpm, ongoing leakage prior to the break (e.g. 1 gpm), and 1% defective fuel. The radioactive water that leaks into the steam generator must be removed and processed. Even one failed trap can have steam leakage resulting in losses of hundreds of dollars/pounds/euros per year.

Though it depends somewhat on the other conditions, traps on applications of 1 MPaG or less will typically have a service life of many years, making it possible to recover investment costs in approximately 1 year in most regions. Vapor is not only unsightly - let’s calculate the.

Pressure and Leak-Rate Tests and Models for Predicting Failure of Flawed Steam Generator Tubes: US Nuclear Regulatory Commission (USNRC). (t & Welty, ), t & Welty, C., REVIEW of EPRI's steam generator R&D program, Palo Alto, CA: Electric Power Size: 1MB.LIMITATIONS OF ULTRASOUND IN PREDICTIVE MAINTENANCE ERRORS ON STEAM LEAKS DETECTION IN STEAM TRAPS By Vicente Blázquez (Aeronautical Engineer) 1.

GAS LEAK DETECTION BY ULTRASOUND Ultrasonic measurement is the method currently used to locate internal gas leaks through valves.A high-temperature ( C), high-pressure (18 MPa), and high-leak rate ( L/min) facility, and a room temperature, high-pressure (52 MPa) test facility were used to test flawed steam generator tubes.

Single and multiple rectangular flaws were fabricated by electro-discharge machining on the outside surface of .