Extrapolation of the J-R curve for predicting reactor vessel integrity

Cover of: Extrapolation of the J-R curve for predicting reactor vessel integrity |

Published by Division of Engineering, Office of Nuclear Regulatory Research, U.S. Nuclear Regulatory Commission, Supt. of Docs., U.S. G.P.O. [disttributor] in Washington, DC .

Written in English

Read online


  • Nuclear pressure vessels -- Materials -- Testing.,
  • Stress-strain curves.

Edition Notes

Book details

Statementprepared by J.D. Landes.
ContributionsU.S. Nuclear Regulatory Commission. Office of Nuclear Regulatory Research. Division of Engineering., University of Tennessee, Knoxville., Oak Ridge National Laboratory.
The Physical Object
Paginationxxv, 73 p.
Number of Pages73
ID Numbers
Open LibraryOL15378528M

Download Extrapolation of the J-R curve for predicting reactor vessel integrity

Get this from a library. Extrapolation of the J-R curve for predicting reactor vessel integrity. [J D Landes; U.S. Nuclear Regulatory Commission. Office of Nuclear Regulatory Research. Division of Engineering.; University of Tennessee, Knoxville.; Oak Ridge National Laboratory.].

A procedure for the prediction of J R-curves for reactor pressure vessels (RPVs) steels in the initial and embrittled states is presented. Prediction of the J R -curves is performed over the ductile fracture temperature range on the basis of a ductile fracture by: If J-R curve extrapolations are required for the analysis, a simple power law fit to data in the extended validity region should be used.

PDF | OnKuk-cheol Kim and others published Evaluation of Dynamic J-R Curve for Leak Before Break Design of Nuclear Reactor Coolant Piping System |.

The fracture toughness results support the overall trend of the CVN shift data. The RT T 0-based prediction curve falls well within the 1σ band surrounding the current regulatory curve. Normally the CVN data would be considered an upper limit on the fracture toughness based RT T 0 curve. The close proximity between these two curves indicates, that for this plate, the fracture toughness data approach the bounding Charpy-based by: Consequently, the safety goal used to establish risk-based criteria for reactor vessel integrity is one-tenth of the safety goal from all sources so the annual core melt frequency shall not exceed 10 − 6 /year.

For analysis purposes, the conservative assumption was made that core melt occurs when a flaw grows though the vessel : R.M.

Gamble. Reactor pressure vessel (RPV) operation is based on maintaining structural integrity of the RPV and the associated primary pressure boundary system. Integrity of the RPV is maintained as long as the RPV materials in the beltline region near the core of the reactor have adequate fracture by: 3.

Balkey and E. Furchi, “Probabilistic fracture mechanics sensitivity study for plant specific evaluations of reactor vessel pressurized thermal shock” in: Advances in Probabilistic Fracture Mechanics, New York (), Vol. 92, pp. 71–Author: Yu.

Vorob'ev, V. Kuznetsov. Constraint -Based Master Curve Analysis of a Nuclear Reactor Pressure Vessel Steel results from an experimental programme carried out within the IAEA CRP-8 project Philip Minnebo, César Chenel Ramos, José Mendes, Luigi Debarberis 95% 5% M=30 0 20 40 60 80 T [°C] K Jc [MPa √ m] EUR EN.

Application of Master Curve fracture toughness for reactor pressure vessel integrity assessment in the USA Article in International Journal of Pressure Vessels. Reactor pressure vessel (RPV) steels are increasingly being characterised in terms of the reference temperature T 0 and the associated Master Curve (MC) Procedure, following the ASTM E standard.

Though correlations have been proposed to predict the T 0 from Charpy transition temperature T 28J or instrumented impact test parameters like T 4kN, Cited by: Fig. 11 shows the J-R curve of A cl.

3 steel (JF) before and after neutron irradiation as a typical example. These J-R curves were predicted by the Master Curve Method [10] using the load-deflection and electrical potential records of a single by: 4.

Disruption Simulation Experiments and Extrapolation to Reactor Conditions A. Hassanein' and I. Konkashbaev' 'Argonne National Laboratory, Argonne, ILUSA qroitsk Institute for Innovation and Fusion Research, Troitsk, Russia Laboratory experiments to simulate plasma disruptions have contributed significantly in many aspects to the understanding of the physical.

Prediction of radiation induced hardening of reactor pressure vessel steels using artificial neural networks Article in Journal of Nuclear Materials (1) January with 38 Reads.

In nuclear power plant, reactor pressure vessel (RPV) is the primary equipment that contains reactor cores and coolant. The RPV integrity should be evaluated in consideration with transient. If d is not negligible, physical dimensions of the reactor are increased by d and extrapolated boundary is formulated with dimension R e = R + d and this condition can be written as Φ(R + d) = Φ(R e.

Application of two engineering methods, the Master Curve and the Unified Curve, has been analyzed for structural integrity assessment of reactor pressure vessels.

These methods have been compared using the fracture toughness data base consisting of 44 sets for ferritic steels and their welds with various degrees of embrittlement. As the comparison tests of the Master Curve Cited by: 4. Most RPV beltline materials do not have J-R curve data – But all have unirradiated USE data NUREG/CR, Multivariable Modeling of Pressure Vessel and Piping J-R Data () [Eason] provides correlations to predict J-R curve from USE –.

J. D Landes, “Extrapolation of the J-R curve for predicting reactor pressure vessel integrity,” in: Nuclear Regulatory Commission Report NUREG/CR (). L Hizer, G. Terrel, and W. van der Sluys, “Size effect on j-r curves for AB plate,” in: Nuclear Regulatory Commission Report NUREG/CR ().Cited by: 3.

Nuclear, Solar, and Geothermal Energy. International Atomic Energy Agency Coordinated Research Projects on Structural Integrity of Reactor Pressure Vessels.

The Feasibility of Using a Risk-informed Approach for Calculating Reactor Pressure Vessel Heatup and Cooldown Operating Curves. Master Integrated Reactor Vessel Surveillance Program. Server and S. Rosinski. “Technical basis for application of the master curve approach to reactor press ure vessel integrity assessment,” in “Effects of radiation on materials, 19th International Symposium, ASTM STP ,” Hamilton, Kumar, Rosinski and Grossbeck, eds., American Society for Testing and Materials, American Society for Testing and Materials, West Author: Dominique P.

Miannay. The disruptive failure probability of a reactor vessel itself has been estimated to lie between 10 (-6) and 10 (-7) per reactor year - so low that it is not considered as a design basis event.

The rupture probability of pipes is estimated to be higher. @article{osti_, title = {Analysis and modeling of fission product release from various uranium-aluminum plate-type reactor fuels}, author = {Taleyarkhan, R.P.}, abstractNote = {This articles provides a perspective overview and analysis of volatile of fission-product release data obtained for uranium-aluminum (U-Al) reactor fuels, U-Al[sub x] (alloy and dispersed), U[sub.

Chapter 7. Petroleum Reactor Pressure-Vessel Materials for Hydrogen Service General Description Materials of Construction Integrity Considerations for Pressure-Vessel Shells Cladding Integrity Application of Refinery Experience to Coal-Liquefaction Reactors Improved Alloys for Pressure Vessels Life-Assessment Techniques References Chapter 8.

PROSIR (Probabilistic Structural Integrity of a PWR Reactor Pressure Vessel) was a round robin exercise with the primary objective to issue some recommendations of best practices when performing probabilistic analysis of RPV.

Another objective was to try to understand what the key parameters are in this type of approach. IRRADIATION DATA FOR REACTOR VESSEL MATERIALS (Modified 9Cr-lMo, SA Gr Class 2 Plate and (J-R curves) data were obtained from EBR-II after irradiation to 30 dpa at "C ('F).

JIC and tearing modulus data at 25"C and its extrapolation to [60] year component life is adequate to confirm that the vessel. PROSIR - Probabilistic Structural Integrity of a Pressurised Water Reactor (PWR) Pressure Vessel, was a round robin exercise with the primary objective to issue some recommendations of best practices when performing probabilistic analysis of a reactor pressure vessel (RPV).

Another objective was to try to understand what the. @article{osti_, title = {Multivariable modeling of pressure vessel and piping J-R data}, author = {Eason, E. and Wright, J. and Nelson, E. E.}, abstractNote = {Multivariable models were developed for predicting J-R curves from available data, such as material chemistry, radiation exposure, temperature, and Charpy V-notch energy.

The J-integral resistance curve (or J-R curve) is an important fracture property of materials and has gained broad applications in assessing the fracture behavior of structural components. Because the J-integral concept was proposed based on the deformation theory of plasticity, the J-R curve is a deformation-based by: 5.

The work presented in this paper provides a model of the J-R behavior of ferritic RPV steels. When combined with other fracture toughness models to be published in Code Case N, this model allows prediction of the mean J-R curve, confidence bounds on the mean, and the temperature dependence of J-R all based only on input of T : Mark Kirk, Marjorie Erickson, Gary Stevens.

Extrapolation of these in. and in. vessel test gas-release data gives a predicted near zero gas release for a full-scale DST at ~15% void. More conservatively, including the uncertainty in the released gas measurements with the average of the results for repeat in. vessel tests gives an estimated release ofFile Size: 4MB.

Access By Walter Reed Army Institute of Research (WRAIR). Access by Walter Reed Army Institute of Research (WRAIR) Walter Reed Army Institute of Research (WRAIR)Cited by: 3. Assessing the structural integrity of a nuclear Reactor Pressure Vessel (RPV) subjected to pressurized-thermal-shock (PTS) transients is extremely important to safety.

In addition to conventional deterministic calculations to confirm RPV integrity, Electricite de France (EDF) carries out probabilistic analyses. The Pressure Vessel Research Council (PVRC) is presently investigating application of the Master Curve approach for implementation in the ASME Code.

The Electric Power Research Institute (EPRI) is supporting development of alternative RPV integrity assessment approaches, which includes documentation of the technical basis for application of the.

The APR(Advanced Power Reactor ) is an evolutionary advanced light water reactor with rated thermal power of MWt [1]. For APR, External Reactor Vessel Cooling (ERVC) is adopted as a primary severe accident management strategy for in-vessel retention (IVR) of by: 5.

An assessment of ex-vessel steam explosion pressure loads in a typical pressurized water reactor cavity was performed with the FCI code MC3D. To be able to perform a series of simulations, the reactor cavity was modelled in a simplified 2D geometry, trying to assure that the 2D simulation results reflect qualitatively and quantitatively as Cited by: 1.


SAVANNAH PRESSURE VESSEL}, author = {Thurber, W C and Lamartine, J T}, abstractNote = {The nil-ductility-transitaion (NDT) temperature, as defined by the Naval Research Laboratory drop-weight test, was determined. The brittle failure assessment for the reactor pressure vessel (RPV) of a MW pressurized water reactor was revised according to the state of the art.

The RPV steel is 22 NiMoCr 37 (A Cl. The expected neutron fluence at the end of license (EOL) after 32 years of full operation is Φ Cited by: 1. @article{osti_, title = {Second Marshall Study Group report on PWR pressure vessel integrity}, author = {Davies, L M and Collier, J G and Garne, L}, abstractNote = {The Second Report of the Marshall Study Group, entitled ''An Assessment of the Integrity of PWR Pressure Vessels,'' was published recently by the United Kingdom Atomic Energy Authority.

Precipitation Kinetics In Aging Reactor Pressure Vessel (RPV) Steels. Yongfeng Zhang, Master Curve required extrapolation outside the scope of the basic model. Therefore, more data is The integrity of reactor pressure vessels (RPVs) is one of Author: Yongfeng Zhang, Pritam Chakraborty, S.

Bulent Biner. Define reactor vessel. reactor vessel synonyms, reactor vessel pronunciation, reactor vessel translation, English dictionary definition of reactor vessel. n. The protective containment vessel surrounding the nuclear fission core in a nuclear reactor Reactor Trip; reactor vessel; Reactor Vessel Auxiliary Cooling; Reactor Vessel Head; Reactor.Pressure vessel steels boiling water reactor surveillance program, elasto-plastic toughness of, integrity {see also Reactor pressure vessel, safety), irradiation embrittlement mechanisms, models, and data correlations, studies of, regulatory considerations {see also Nuclear Regulatory Commis­.vapor phase.

Steam from the top of reactor vessel drives the turbine-generator in a single coolant loop. Figure R Boiling Water Reactor Concept. Most LWRs in the world are the PWR type; however, both types have enjoyed excellent performance and reliability worldwide. The predominant product from LWRs is Size: 3MB.

25640 views Tuesday, November 3, 2020