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ASME Sec XIII 2021 pdf download

ASME Sec XIII 2021 pdf download.Pressure Vessel Code.
(a) The following information provides guidance to Code users for submitting technical inquiries to the applicable Boilerand Pressure Vessel (BPV) Standards Committee (hereinafterreferred to as the Committee). See the guidelines on approval of new materials under the ASME Boiler and Pressure Vessel Code in Section II, Part D for requirements for requests that involve adding new materials to the Code. See the guidelines on approval of new welding and brazing materials in Section II, Part C for requirements for requests that involve adding new welding and brazing materials (“consumables”) to the Code. Technical inquiries can include requests for revisions or additions to the Code requirements, requests for Code Cases, or requests for Code Interpretations, as described below: (1) Code Revisions. Code revisions are considered to accommodate technological developments, to address admin- istrative requirements, to incorporate Code Cases, or to clarify Code intent. (2) CodeCases.CodeCasesrepresentalternativesoradditionstoexistingCoderequirements.CodeCasesarewritten as a Question and Reply, and are usuallyintended to be incorporated into the Code ata laterdate. When used, Code Cases prescribe mandatory requirements in the same sense as the text ofthe Code. However, users are cautioned that not all regulators, jurisdictions, or Owners automatically acceptCode Cases. The mostcommon applications for Code Cases are as follows: (-a) to permit early implementation of an approved Code revision based on an urgent need (-b) to permit use of a new material for Code construction (-c) to gain experience with new materials or alternative requirements prior to incorporation directly into the Code (3) Code Interpretations (-a) Code Interpretations provide clarification of the meaning of existing requirements in the Code and are presented in Inquiry and Reply format.
(c) Presentations. The Inquirermaydesireto attendorbe askedto attendameetingofthe Committee to make aformal presentation or to answer questions from the Committee members with regard to the Inquiry. Attendance at a BPV Standards Committee meetingshall be atthe expense ofthe Inquirer. The Inquirer’s attendance orlackofattendance ata meetingwillnotbeusedbytheCommitteeasabasisforacceptanceorrejectionoftheInquirybytheCommittee.However, ifthe Inquirer’s requestis unclear, attendance bythe Inquirerora representative maybe necessaryforthe Committee to understand the requestsufficientlyto be able to provide an Interpretation. Ifthe Inquirerdesires to make a presentation at a Committee meeting, the Inquirer should provide advance notice to the Committee Secretary, to ensure time will be allotted for the presentation in the meeting agenda. The Inquirer should consider the need for additional audiovisual equipment that might not otherwise be provided by the Committee. With sufficient advance notice to the Committee Secretary, such equipment may be made available. 3 CODE REVISIONS OR ADDITIONS Requests for Code revisions or additions should include the following information: (a) Requested Revisions or Additions. For requested revisions, the Inquirer should identify those requirements ofthe Code that they believe should be revised, and should submit a copy of, or relevant extracts from, the appropriate re- quirements as they appear in the Code, marked up with the requested revision. For requested additions to the Code, the Inquirer should provide the recommended wording and should clearly indicate where theybelieve the additions should be located in the Code requirements. (b) Statement ofNeed. The Inquirer should provide a brief explanation of the need for the revision or addition. (c) BackgroundInformation.
5 CODE INTERPRETATIONS (a) Requests for Code Interpretations should be accompanied by the following information: (1) Inquiry. The Inquirer should propose a condensed and precise Inquiry, omitting superfluous background infor- mation and, when possible, composing the Inquiry in such a way that a “yes” or a “no” Reply, with brief limitations or conditions, if needed, can be provided by the Committee. The proposed question should be technically and editorially correct. (2) Reply. The Inquirer should propose a Reply that clearly and concisely answers the proposed Inquiry question. Preferably, the Reply should be “yes” or “no,” with brief limitations or conditions, if needed. (3) Background Information. The Inquirer should include a statement indicating why the included paragraphs, figures,ortablesareambiguousorconveyconflictingrequirements.TheInquirershouldprovideanyneedorbackground information, such as described in 3(b) and 3(c), respectively, for Code revisions or additions, that will assist the Committee in understanding the proposed Inquiry and Reply. IftheInquirerbelieves arevisionofthe Coderequirements wouldbehelpfulto supporttheInterpretation, theInquirer may propose such a revision for consideration by the Committee. In most cases, such a proposal is not necessary.

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