Asme code case 2286 pdf
This paper outlines the proposed Code Case and presents a technical basis for the flaw tolerance evaluation of CASS piping components. Issued every two years, the ASME Boiler and Pressure Vessel Code (BPVC) sets the standard for the safe design, manufacture and maintenance of boiler and pressure vessels, power-producing machines and nuclear power plant components. In the event there is an urgent need for alternative rules concerning materials, construction, or in-service inspection activities not covered by existing Boiler and Pressure Vessel Code (BPVC) rules, or for early implementation of an approved code revision, ASME may issue a code case.
Code Cases of the ASME Boiler and Pressure Vessel Code CASES OF ASME BOILER AND PRESSURE VESSEL CODE NC – SUPP. 3 Presentation Outline • Approval for new code development • Charge from BPTCS to B31 Standards Committee for Hydrogen Piping/Pipeline code development • B31.12 Status & Structure • Hydrogen Pipeline issues • Research Needs • Where Do We Go From Here? The Code Case is currently under review by the ASME Working Group on Pipe Flaw Evaluation. Within the ASME Section VIII, Division 2 code, the design-by-analysis requirement provides significant flexibility to ensure that non-standard designs will be safe for service. All B31 Code Cases in effect as of September 21, 2007 will remain available for use unless annulled by the B31 Standards Committee. ASME Interpretation BPV VIII-1-16-85; ANSI Flange Pressure Reduction Options In PV Elite; Code Case 2901; What Code Interpretation BPV VIII-1-16-85 States-This interpretation states that if you have external loadings acting on a nozzle you have to consider them on the flange too. This improved approach removes some of the conservatism in the existing ASME Code approach, which was developed in the 1970s based on two flaws interacting with each other. In this case the allowable stress will be calculated using 4 instead of 3.5 in equations shown in the examples above; as a safety measure, we do not allow the calculated allowable stress to be more than the allowable stress form the ASME codebook.
Categories: Technique\\Regulatory Literature.
Built to ASME / ANSI B29.1 standards for dimensions, interoperability, and sprocket fit, the ASME / ANSI Standard Roller Chain series also meets Diamond Chain’s rigorous internal requirements. Code Cases (2604 for cast aluminum sections and 2469 ‐ 1 for heating boilers) and their limitations have now been incorporated into Section IV A New paragraph HG‐511 was added to permit the pneumatic testing of boilers in lieu of a hydrostatic test.
The method and results described herein are in stark contrast to the “knockdown factor” approach currently utilized in ASME Code Case 2286-1. STP-NU-051 Code Comparison Report 44 'Design Specification' appears in the paragraph NB-1131 of the ASME BPVC, but is not identified .
Businesses should familiarize themselves with the ANSI/ASME A13.1 pipe color code standard, which is the industry consensus standard for marking pipes. ASME Code (Current Edition, Current Addendum), Sections I, II, IV, V, VIII (Division 1), and code cases. Code Case OMN-22, Smooth Running Pumps, was approved in January 2017 for pumps with very low reference value vibration levels. Does anyone have or know where to locate ASME code case Application of the ASME Certification Mark? The ASME Boiler and Pressure Vessel Code Section VIII fabrication tolerances as supplemented by ASME Code Case 2286-1 are reviewed and addressed in light of the findings of the current study and resulting solutions with respect to the critical buckling loads. Markings such as “ASME,” “ASME Standard,” or any other marking including “ASME,” ASME logos, or the Certification Mark shall not be used on any item that is not constructed in accordance with all of the applicable requirements of the Code or Standard. After years of development and public comment the first edition of the code, ASME Rules of Construction of Stationary Boilers and for Allowable Working Pressures, was published in 1914 and formally adopted in the spring of 1915. As you know, the Errata, Interpretations and Code Cases will continue to be updated regularly, in between new releases of the Code, and will be available to your customers as they are issued as part of their online subscriptions or via hardcopy purchases.
The nonplanar flaw evaluation uses the procedure provided in Code Case N-480.
addenda to the American Society of Mechanical Engineers (ASME) codes for nuclear power plants and a standard for quality assurance. This obround flange subjected to internal pressure is designed using equivalent circular flange method. The Code Case has gone through three revisions with the latest approved by ASME Section XI being N-513-2. Additional nickel-based alloys including Alloys 600, 690, and 718 are alloys of interest for nuclear applications. This paper explains in detail the methodology used to derive improved flaw proximity rules through three-dimensional FEM and XFEM analyses.
The finite element analysis (FEA) is used to predict levels of stress and deformation of a particular flange and stresses are linearized for stress categorization. ASME New C12A considerations • The hardness requirements currently in the two material specifications, SA-217 and SA-426, have been added to the Code Case. An experienced Third Party Inspection Agency was needed to provide: Project Management of the numerous actions required to comply with Brazilian NR-13 regulations.
Revised All Code Cases remain available for use until annulled by the ASME Boiler and. The objective of ISP-46 is to assess the capability of computer codes to provide an integral simulation of a severe accident in a Pressurised Water Reactor (PWR), from the initial stages of core heat-up to the behaviour of released fission products in the containment. The fact that the possibility is still limited in a Code Case, apart from Section VIII Div. However, for Class 1 systems, the Code Case recommends that the owner develop the methodology and criteria for the assessment of wall thinning.
Boilers built to ASME Code are acceptable, but must be shop-inspected by an inspector holding a National Board Commission. If the device is found to be stuck in a closed position, the equipment should be immediately removed from service until such time the device can be replaced or repaired. ASME/BPVC - 2286-1 2286-1 Alternative Rules for Determining Allowable External Pressure and Compressive Stresses for Cylinders, Cones, Spheres, and Formed Heads Section VIII, Divisions 1 and 2 inactive, Most Current Details. Based on the study of ASME Code Case N-284 about metal containment shell buckling design, a simplified method which is applicable for containment head of the advanced pressurized-water reactors for buckling analysis and evaluation is provided in the paper. CODE CASES: BOILERS AND PRESSURE VESSELS Supplement 4 The new and revised Cases that appear in this Supplement were considered at the Boiler and Pressure Vessel Committee meeting of November 1, 2013, and approved by the Board on Pressure Technology Codes and Standards on January 6, 2014. Where this is the case the company should demonstrate compliance with the standard, that the standard has been produced by competent persons and that the standard is subject to periodic review.
Jun 7, 2016 … ASME Codes & Standards Provide Valuable Pathway to Apply Results from … • Relevant Code Cases addressing time-dependent behavior. Applied Chemicals and Materials Division National Institute of Standards and Technology Boulder, Colorado 80305 .
EPRI sponsored this report to provide technical support for a Relief Request and an American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code Case to allow medium- and high-density polyethylene (PE) pipe to be used as an alternative for repairing or replacing buried Class 3 piping. From industry to agriculture, our Standard Series chains are designed to fit a wide variety of standard applications, and to last longer than any other manufacturer’s chain. All other devices must have at least 75% of the device set pressure under the device disk prior to lifting the test lever. Applying this recent Code change in COMPRESS helps you to: Meet updated client specifications that call for the latest ASME Code Edition.
ASME Section XI Code Case N-806, for evaluation of metal loss in Class 2 and 3 metallic piping buried in a backfilled trench, was first published in 2012. ASME III Code Cases have been developed to provide explicit guidance on the application of finite element techniques for: (i) Limit Load Analysis. This caused many nuclear plants to obtain a Relief Request to use alternative requirements than those specified in the tables in subsections ISTB or ISTF of the ASME OM Code. In addition, mean or median values are used for evaluation instead of design values including conservativeness. There are several different piping codes in U.S and the World to cater to the different natures of the industries. Download File PDF Case Cases Of Asme Boiler And Pressure Vessel Code 2235 9 201361 Case Cases Of Asme Boiler And Pressure Vessel Code 2235 9 201361 Recognizing the quirk ways to acquire this books case cases of asme boiler and pressure vessel code 2235 9 201361 is additionally useful. shows how easily individuals, companies, and professional societies can find themselves embroiled in expensive legal battles that tarnish the reputation of the engineering profession as a whole. SectionVIIIcomparison.PDF(me#09) asme code, section viii, division 2: alternative rules for design and fabrication of pressure vessels introduction to the asme boiler &Section VIII, Division 2; .
The equation in the draft code case is almost the same as the original but every random variables, seismic load and yield stress, have their own design factors. ASME has prepared a proposal to develop guidance on risk analysis and management for the Department of Homeland Security. This work included a new equation for calculating expansion stress cases with new SIF and index values. This means that all Code Cases listed in this Supplement and beyond will remain available for use until annulled by the ASME Boiler and Pressure Vessel Standards Committee. In order to read a Secure PDF, you will need to install the FileOpen Plug-In on your computer. Other factors, such as scanning speed, weld coverage, step size, were all either already covered in Section V Article 4, or were fairly “common sense”.