Development of Software for the Implementation of Elastic and Simplified Inelastic Rules for Design of Class A Nuclear Components in Elevated Temperature Service

2017 ◽  
Author(s):  
Michael Swindeman ◽  
T.-L. Sham ◽  
Robert I. Jetter
Keyword(s):  
Stainless Steel ◽  
High Temperature ◽  
Elevated Temperature ◽  
Program Development ◽  
Nuclear Facility ◽  
Class A ◽  
Design Requirements ◽  
Elevated Temperature Design ◽  
Assessment Procedures ◽  
Initial Focus

Software is being developed to aid assessment procedures of components under specified loading conditions in accordance with the elevated temperature design requirements for Class A components in ASME Boiler and Pressure Vessel Code, Section III, Rules for Construction of Nuclear Facility Components, Division 5, High Temperature Reactors, Subsection HB, Subpart B (HBB). There are many features and alternative paths of varying complexity in HBB. The initial focus of this program is a basic path through the various options for a single reference material, 316H stainless steel. However, the program will be structured for eventual incorporation all of the features and permitted materials of HBB. This paper focuses on a description of the overall program, particular challenges in developing numerical procedures for the assessment, and an overall description of the approach to computer program development.

J&L TYPE 309

Alloy Digest ◽  
2003 ◽  
Vol 52 (12) ◽  
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
High Temperature ◽  
Elevated Temperature ◽  
Physical Properties ◽  
Heat Treating ◽  
Good Combination ◽  
Resistance To Oxidation ◽  
Cold Worked ◽  
Specialty Steel

Abstract Type 309 (UNS S30900) is an austenitic chromium-nickel stainless steel widely used for elevated-temperature services. It has a good combination of oxidation resistance and corrosion-resisting properties. The alloy is essentially nonmagnetic when annealed and become slightly magnetic when cold worked. It is intended primarily for high-temperature applications at 816 deg C (1500 deg F) or higher where resistance to oxidation and/or corrosion is required. This datasheet provides information on composition, physical properties, hardness, and tensile properties as well as creep. It also includes information on corrosion resistance as well as forming, heat treating, and joining. Filing Code: SS-896. Producer or source: J & L Specialty Steel Inc.

Grade 11 High Temperature Steam Header Case History and Benchmark

2016 ◽  
Author(s):  
Dave Dewees
Keyword(s):  
High Temperature ◽  
Elevated Temperature ◽  
Method Validation ◽  
Case History ◽  
Design Method ◽  
Fatigue Behavior ◽  
Method Performance ◽  
Elevated Temperature Design ◽  
High Temperature Steam ◽  
Grade 11

The cost and complexity of design method validation at the component level makes actual and comprehensive benchmark cases challenging to obtain. This is especially true of elevated temperature design methods where component and material response is complicated by time-dependent creep and possibly creep-fatigue behavior. To support current Design-by-Analysis modernization development within Section I of the ASME Boiler & Pressure Vessel Code, service examples that are comprehensive enough to allow method validation, while still being tractable in complexity have been identified. To this end, the case history of a Grade 11 high temperature steam outlet header that was retired after 23 of years of service is presented. Detailed damage and deformation information is available which allows validation of creep material models, as well as future evaluation of candidate elevated temperature design method performance.

scholarly journals Inelastic Material Models of Type 316H for Elevated Temperature Design of Advanced High Temperature Reactors

Energies ◽  
2020 ◽  
Vol 13 (17) ◽  
pp. 4548
Author(s):  
Gyeong-Hoi Koo ◽  
Ji-Hyun Yoon
Keyword(s):  
High Temperature ◽  
Elevated Temperature ◽  
Constitutive Equations ◽  
Isotropic Hardening ◽  
Material Models ◽  
Material Parameters ◽  
Hardening Behavior ◽  
Inelastic Material ◽  
High Temperature Reactors ◽  
Elevated Temperature Design

In this paper, the inelastic material models for Type 316H stainless steel, which is one of the principal candidate materials for elevated temperature design of the advanced high temperature reactors (HTRs) pressure retained components, are investigated and the required material parameters are identified to be used for both elasto-plastic models and unified viscoplastic models. In the constitutive equations of the inelastic material models, the kinematic hardening behavior is expressed with the Chaboche model with three backstresses, and the isotropic hardening behavior is expressed by the Voce model. The required number of material parameters is minimized to be ten in total. For the unified viscoplastic model, which can express both the time-independent plastic behavior and the time-dependent viscous behavior, the constitutive equations have the same kinematic and isotropic hardening parameters of the elasto-plastic material model with two additional viscous parameters. To identify the material parameters required for these constitutive equations, various uniaxial tests were carried out at isothermal conditions at room temperature and an elevated temperature range of 425–650 °C. The identified inelastic material parameters were validated through the comparison between tests and calculations.

USS 18-8 Cb-Ta

Alloy Digest ◽  
1956 ◽  
Vol 5 (4) ◽  
Keyword(s):  
United States ◽  
Fracture Toughness ◽  
Stainless Steel ◽  
Corrosion Resistance ◽  
High Temperature ◽  
Elevated Temperature ◽  
Heat Treating ◽  
United States Steel Corporation ◽  
Temperature Performance ◽  
Type Stainless Steel

Abstract U.S.S. 18-8 Cb-Ta is an austenitic chromium-nickel type stainless steel with the carbon stabilized by columbium-tantalum for welding and elevated temperature service. This type is useful when the weldment is not annealed after welding. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness, creep, and fatigue. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: SS-42. Producer or source: United States Steel Corporation.

HITEP_RCC-MRx Program for the Support of Elevated Temperature Design Evaluation and Defect Assessment

2019 ◽  
Vol 141 (5) ◽  
Author(s):  
Hyeong-Yeon Lee ◽  
Min-Gu Won ◽  
Nam-Su Huh
Keyword(s):  
High Temperature ◽  
Elevated Temperature ◽  
Design Evaluation ◽  
Piping System ◽  
Software Platform ◽  
Defect Assessment ◽  
Class 1 ◽  
Nuclear Component ◽  
Elevated Temperature Design ◽  
Integrated Software

An integrated software platform of high-temperature design evaluation and defect assessment for a nuclear component and piping system subjected to high-temperature operation in creep regime has been developed. The program, called “HITEP_RCC-MRx,” is based on French nuclear grade high-temperature design code of RCC-MRx and enables a designer to conduct not only elevated temperature design evaluation but also elevated temperature defect assessment. HITEP_RCC-MRx consists of three modules: “HITEP_RCC-DBA,” which is programmed for the design-by-analysis (DBA) evaluation for class 1 pressure boundary components such as the pressure vessel and heat exchangers according to the RB-3200 procedures; “HITEP_RCC-PIPE,” which is programmed for the design-by-rule (DBR) evaluation according to the RB-3600 procedures; and “HITEP_RCC-A16,” which is programmed for high-temperature defect assessment according to the A16 procedures. The program has been verified with a number of related example problems on modules of DBA, Pipe, and A16. It was shown from the verification examples that integrated software platform of HITEP_RCC-MRx is capable of conducting three functions of an elevated temperature design evaluation for pressure boundary components and for piping, and an elevated defect assessment in an efficient and reliable way.

AISI TYPE 348

Alloy Digest ◽  
1963 ◽  
Vol 12 (9) ◽  
Keyword(s):  
Fracture Toughness ◽  
Stainless Steel ◽  
Corrosion Resistance ◽  
High Temperature ◽  
Elevated Temperature ◽  
Heat Treating ◽  
Steel Mills ◽  
Temperature Performance ◽  
Aisi Type ◽  
Type Stainless Steel

Abstract AISI Type 348 is an austenitic chromium-nickel type stainless steel with the carbon stabilized by columbium-tantalum for welding and elevated temperature service. This type is useful when the weldment is not annealed after welding. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness, creep, and fatigue. It also includes information on low and high temperature performance, and corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: SS-147. Producer or source: Stainless steel mills.

ATI 20-25+Nb

Alloy Digest ◽  
2021 ◽  
Vol 70 (2) ◽  
Keyword(s):  
Stainless Steel ◽  
High Temperature ◽  
Elevated Temperature ◽  
Austenitic Stainless Steel ◽  
Stainless Steels ◽  
High Performance ◽  
Heat Treating ◽  
Performance Gap ◽  
Temperature Performance ◽  
Nickel Base

Abstract ATI 20-25+Nb is an austenitic stainless steel intended primarily for elevated-temperature service. This alloy fills a performance gap between conventional heat-resistant stainless steels and nickel-base superalloys, providing high performance with an economical composition. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as creep. It also includes information on high temperature performance as well as forming, heat treating, machining, and joining. Filing Code: SS-1331. Producer or source: ATI.

DMV 310 N

Alloy Digest ◽  
2009 ◽  
Vol 58 (1) ◽  
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
High Temperature ◽  
Elevated Temperature ◽  
Austenitic Stainless Steel ◽  
Creep Resistance ◽  
Heat Treating ◽  
Elevated Temperature Strength ◽  
Temperature Performance ◽  
Special Modification

Abstract DMV 310 N is a special modification of 310, an austenitic stainless steel, by additions of both nitrogen and niobium. This addition results in increased elevated-temperature strength and creep resistance. The alloy has potential in advanced boilers with high steam temperatures. This datasheet provides information on composition, physical properties, and elasticity. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, and joining. Filing Code: SS-1027. Producer or source: Mannesmann DMV Stainless USA Inc.

Bolt Anti-Seize Performance in a Process Plant Environment

2006 ◽  
Author(s):  
Warren Brown ◽  
Luc Marchand ◽  
Thierry LaFrance
Keyword(s):  
Stainless Steel ◽  
High Temperature ◽  
Elevated Temperature ◽  
Factor Versus ◽  
Test Methods ◽  
Pressure Vessels ◽  
316 Stainless Steel ◽  
Plant Environment ◽  
Process Plant ◽  
Steel Bolts

This paper details recent testing that was performed as an extension of earlier work on nut factor and high temperature Break-out performance of selected anti-seize products. Comparison is made between previous results obtained on C-Si bolts (ASTM A193 B7) with more recent tests on 316 Stainless Steel bolts (ASTM A193 B8M). The bolt nut factor versus temperature and the required Breakout torque after one week at elevated temperature are detailed. In addition, common theories regarding the unsuitability of anti-seize containing graphite on stainless steel and the use of milk of magnesia as an anti-seize are quantitatively tested by comparison with standard anti-seize products. The test methods used are designed to closely mimic actual bolt assembly in a process plant environment. The paper, therefore, presents useful information that will enable more accurate assembly of bolted flanged joints on pressure vessels and piping in any process plant environment.

Microstructural characterization of a rapidly solidified Al-Fe-V-Si alloy for elevated temperature applications

1988 ◽  
Vol 46 ◽  
pp. 550-551
Author(s):  
R. E. Franck ◽  
J. A. Hawk ◽  
G. J. Shiflet
Keyword(s):  
High Temperature ◽  
Elevated Temperature ◽  
Grain Growth ◽  
Volume Fraction ◽  
Microstructural Characterization ◽  
Second Phase ◽  
Microstructural Stability ◽  
Elevated Temperature Strength ◽  
Temperature Applications

Rapid solidification processing (RSP) is one method of producing high strength aluminum alloys for elevated temperature applications. Allied-Signal, Inc. has produced an Al-12.4 Fe-1.2 V-2.3 Si (composition in wt pct) alloy which possesses good microstructural stability up to 425°C. This alloy contains a high volume fraction (37 v/o) of fine nearly spherical, α-Al12(Fe, V)3Si dispersoids. The improved elevated temperature strength and stability of this alloy is due to the slower dispersoid coarsening rate of the silicide particles. Additionally, the high v/o of second phase particles should inhibit recrystallization and grain growth, and thus reduce any loss in strength due to long term, high temperature annealing.The focus of this research is to investigate microstructural changes induced by long term, high temperature static annealing heat-treatments. Annealing treatments for up to 1000 hours were carried out on this alloy at 500°C, 550°C and 600°C. Particle coarsening and/or recrystallization and grain growth would be accelerated in these temperature regimes.

Sign in / Sign up

Export Citation Format

Share Document