1、BSI Standards PublicationBS EN 764-1:2015Pressure equipmentPart 1: VocabularyBS EN 764-1:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 764-1:2015.It supersedes BS EN 764-1:2004 and BS EN 764-3:2002 which arewithdrawnThe UK participation in its preparation
2、 was entrusted to TechnicalCommittee PVE/1, Pressure Vessels.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The
3、British Standards Institution 2015. Published by BSI StandardsLimited 2015ISBN 978 0 580 81184 5ICS 01.040.23; 23.020.30Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committe
4、e on 31 August 2015.Amendments issued since publicationDate Text affectedBS EN 764-1:2015EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 764-1 April 2015 ICS 01.040.23; 23.020.30 Supersedes EN 764-1:2004, EN 764-3:2002English Version Pressure equipment - Part 1: Vocabulary Equipement sous press
5、ion - Partie 1: Vocabulaire Druckgerte - Teil 1: Vokabular This European Standard was approved by CEN on 14 February 2015. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard with
6、out any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other
7、language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, De
8、nmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITT
9、EE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 764-1:2015 EBS EN 764-1:2015
10、EN 764-1:2015 (E) 2 Contents Page Foreword 3 1 Scope 4 2 Normative references 4 3 Terms and definitions . 4 3.1 General terms . 4 3.2 Terms related to design 5 3.3 Terms related to manufacturing . 19 3.4 Terms related to testing 20 3.5 Terms related to interested parties 21 Annex A (informative) 24
11、BS EN 764-1:2015EN 764-1:2015 (E) 3 Foreword This document (EN 764-1:2015) has been prepared by Technical Committee CEN/TC 54 “Unfired pressure vessels”, the secretariat of which is held by BSI. This European Standard shall be given the status of a national standard, either by publication of an iden
12、tical text or by endorsement, at the latest by October 2015, and conflicting national standards shall be withdrawn at the latest by October 2015. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held
13、 responsible for identifying any or all such patent rights. This document supersedes EN 764-1:2004 and EN 764-3:2002. The 2015 edition of EN 764-1 supersedes both the 2004 edition and EN 764-3:2002. It constitutes a major expansion of the standard, which now comprises definitions for 223 terms as co
14、mpared to only 18 + 14 in the two superseded standards. An informative annex on notions of allowable pressures and temperatures has been added. An annex containing translations of terms to several other languages is in the course of preparation. This document has been prepared under a mandate given
15、to CEN by the European Commission and the European Free Trade Association. EN 764, Pressure equipment comprises the following parts: Part 1: Vocabulary; Part 2: Quantities, symbols and units; Part 3: Definition of parties involved; Part 4: Establishment of technical delivery conditions for metallic
16、materials; Part 5: Inspection documentation of metallic materials and compliance with the material specification; Part 6: Structure and content of operating instructions; Part 7: Safety systems for unfired pressure equipment. According to the CEN-CENELEC Internal Regulations, the national standards
17、organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembo
18、urg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 764-1:2015EN 764-1:2015 (E) 4 1 Scope This European Standard specifies terms and definitions to be used for pressure equipment and assemblies within the sc
19、ope of European Directives on pressure equipment. NOTE It can be applied to other pressure equipment. 2 Normative references Not applicable. 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. If a term or definition only applies to a special area or
20、 is different in different areas, the relevant area is shown within brackets . 3.1 General terms 3.1.1 ambient temperature temperature of the surrounding atmosphere in the immediate vicinity of the pressure component 3.1.2 assembly several pieces of pressure equipment assembled by a manufacturer to
21、constitute an integrated and functional whole 3.1.3 cryogenic applications applications at low temperature Note 1 to entry: Normally involving liquefied gases. 3.1.4 design validation examination of the design documents to verify that the design conforms to the relevant product standard 3.1.5 fluid
22、gas, liquid and vapour in its pure phase as well as mixtures thereof 3.1.6 hazard category category of the pressure equipment taking into account the potential hazards 3.1.7 joint coefficient reduction coefficient (e.g. for a welded joint) related to the testing group and which is applied to the nom
23、inal design stress BS EN 764-1:2015EN 764-1:2015 (E) 5 3.1.8 main pressure bearing parts parts which constitute the envelope under pressure, essential for the integrity of the equipment 3.1.9 maximum allowable temperature TSmaxmaximum temperature for which the pressure equipment is designed as speci
24、fied by the manufacturer 3.1.10 minimum allowable temperature TSminminimum temperature for which the pressure equipment is designed as specified by the manufacturer 3.1.11 pipelines piping or piping system designed for the conveyance of any fluid or substance to or from an installation (onshore or o
25、ffshore) starting from and including the first isolation device located within the installation and including all the annexed equipment designed specifically for pipelines 3.1.12 piping tubing, fittings, expansion joints, hoses or other pressure-bearing components, intended for the transport of flui
26、d, connected together and integrated into a pressure system 3.1.13 piping class category in which piping is classified in accordance with the Pressure Equipment Directive 97/23/EC 3.1.14 piping system pipe or system of pipes for the conveyance of fluids within an industrial site Note 1 to entry: A p
27、iping system can be regarded as one single system, provided it conveys substances having the same properties and it is a whole designed for the same allowable pressure. Note 2 to entry: Interruption by different components such as pumps, machines, vessels, etc. does not preclude the integration to o
28、ne single piping. 3.1.15 pressure vessel housing and its direct attachments up to the coupling point connecting it to other equipment, designed and built to contain fluids under pressure 3.1.16 repair process of rectifying a defect in either base material or weld 3.2 Terms related to design 3.2.1 ac
29、tion imposed mechanical, thermal or thermo-mechanical influence which causes stress and/or strain in a structure, e.g. an imposed pressure, force, displacement or temperature 3.2.2 action type classification of action based on statistical properties and duration BS EN 764-1:2015EN 764-1:2015 (E) 6 3
30、.2.3 analysis thickness eaeffective thickness available to resist the loading depending on the load case 3.2.4 anchor rigid device, which may itself be subject to imposed displacement, used to prevent all relative pipe rotation and displacement at the point of application, under the design condition
31、s of temperature and loading 3.2.5 annular plate flat end of annular form, connected to one cylindrical shell at its outside diameter and another at its inside diameter, and subject predominantly to bending and not shear 3.2.6 application rule generally recognized rule that follows the principles of
32、 the relevant product standard and satisfies their requirements 3.2.7 assembly condition condition applying when the gasket or joint contact surface is seated during assembly of the joint at ambient temperature and the only loading comes from the bolts 3.2.8 assumed thickness thickness assumed by th
33、e designer between the minimum required shell thickness and the shell analysis thickness 3.2.9 bending stress equivalent linear distributed stress through the wall of the pressure part, proportional to the distance from the neutral axis 3.2.10 blind flange blank flange flat closure connected by bolt
34、s 3.2.11 bolted domed end cover or blind flange consisting of a flange and a dome of constant radius of curvature 3.2.12 calculation pressure differential pressure used for the purpose of the design calculations for a component 3.2.13 calculation temperature temperature used for the purpose of the d
35、esign calculations for a component 3.2.14 chamber fluid space within a unit of pressure equipment 3.2.15 chamber volume internal volume of a chamber, including the volume of nozzles to the first connection (flange, coupling, weld) and excluding the volume of internal permanent parts (e.g. baffles, a
36、gitators) BS EN 764-1:2015EN 764-1:2015 (E) 7 3.2.16 characteristic function characteristic function of an action is a representative function (of time) for the action Note 1 to entry: Required for actions for which, in specific design checks, the time-dependence is of importance, e.g. temperature/p
37、ressure transients during start-up or shut-down. 3.2.17 characteristic value characteristic value of an action is a representative value which takes account of the variation of an action 3.2.18 coefficient of variation measure of statistical dispersion (standard deviation divided by mean value) 3.2.
38、19 collar abutment for the flange cylinder attached to the end tangent 3.2.20 combination factor factor applied to design values of variable actions with stochastic properties if combined with pressure, or if two or more of these actions are included in one load case 3.2.21 compliance inverse of the
39、 axial stiffness of the assembly, symbol Y, units mm/N 3.2.22 component part of pressure equipment which can be considered as an individual item for the calculation 3.2.23 constant hanger constant support pipe support with constant characteristic to carry vertical loads whilst permitting vertical di
40、splacements, base mounted or suspended 3.2.24 continuous weld weld extending along the entire length of a joint 3.2.25 convolution corrugation flexible unit of an expansion bellows 3.2.26 creep range temperature range in which material characteristics used in design are time dependent 3.2.27 critica
41、l area an area where the total fatigue damage index exceeds a maximum value BS EN 764-1:2015EN 764-1:2015 (E) 8 3.2.28 critical zone highly stressed area where a fracture is expected to occur in a burst test or where surface fatigue cracks are expected to be initiated due to fluctuating pressure loa
42、ds 3.2.29 cut-off limit cyclic stress range below which fatigue damage is disregarded 3.2.30 deposited thickness weld throat thickness thickness in the weld metal excluding any reinforcement Note 1 to entry: The preferred term in ISO/TR 25901 is penetration depth. 3.2.31 design check investigation o
43、f a components safety under the influence of specified combinations of actions with respect to specified limit states 3.2.32 design model structural model used in the determination of effects of actions 3.2.33 design pressure pressure chosen for the derivation of the calculation pressure of each com
44、ponent Note 1 to entry: The design pressure normally refers to the top of the equipment and does not include pressure generated by the weight of its content. Note 2 to entry: If the equipment consists of several compartments, each compartment may have its own design pressure. 3.2.34 design reference
45、 temperature TR temperature used for determining the impact energy requirements 3.2.35 design stress range spectrum histogram of the number of occurrences of all stress cycles of various ranges anticipated during the design lifetime 3.2.36 design temperature temperature chosen for the derivation of
46、the calculation temperature of each component 3.2.37 differential pressure pressure whose algebraic value is equal to the pressure difference on either side of a separation wall 3.2.38 discontinuity shape or material change which affects the stress distribution BS EN 764-1:2015EN 764-1:2015 (E) 9 3.
47、2.39 dished end end of pressure vessel formed to have its open end cylindrical Note 1 to entry: Normally manufactured from plate. Note 2 to entry: Earlier called “dished head“. 3.2.40 effect response (e.g. stress, strain, displacement, resultant force or moment, equivalent stress resultant) of a com
48、ponent to a specific action, or combination of actions 3.2.41 effective notch stress stress which governs fatigue behaviour at a notch 3.2.42 effective stress concentration factor ratio of effective notch stress (total stress), to structural stress at same point 3.2.43 ellipsoidal end dished end hav
49、ing a truly ellipsoidal form 3.2.44 end tangents straight unconvoluted portions at the ends of an expansion bellows 3.2.45 endurance limit cyclic stress range below which, in the absence of any previous loading, no fatigue damage is assumed to occur under constant amplitude loading 3.2.46 equalizing ring T-shaped device that is tightly fitted into the root of the convolutions (corrugations) of expansion bellows in order to equalize the movement of the different convolutions 3.2.47 equivalent full pressure cycles number of full pressure cycles that cause the same dama
