BS EN ISO 8311-2013 Refrigerated hydrocarbon and non-petroleum based liquefied gaseous fuels Calibration of membrane tanks and independent prismatic tanks in ships Manual and inter.pdf

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1、BSI Standards PublicationBS EN ISO 8311:2013Refrigerated hydrocarbon andnon-petroleum based liquefiedgaseous fuels Calibrationof membrane tanks andindependent prismatic tanks inships Manual and internalelectro-optical distance-rangingmethodsBS EN ISO 8311:2013 BRITISH STANDARDNational forewordThis B

2、ritish Standard is the UK implementation of EN ISO 8311:2013.It supersedes BS EN ISO 8311:1996 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee PTI/12, Petroleum Measurement and Sampling.A list of organizations represented on this committee can beobtaine

3、d 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 British Standards Institution 2013. Published by BSI StandardsLimited 2013ISBN 978 0 580 78234 3ICS 75.180.30Compliance with a B

4、ritish Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 December 2013.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 8311 De

5、cember 2013 ICS 75.180.30 Supersedes EN ISO 8311:1995English Version Refrigerated hydrocarbon and non-petroleum based liquefied gaseous fuels - Calibration of membrane tanks and independent prismatic tanks in ships - Manual and internal electro-optical distance-ranging methods (ISO 8311:2013) Hydroc

6、arbures rfrigrs et combustibles gazeux liqufis base non ptrolire - talonnage des rservoirs membrane et rservoirs pyramidaux - Mthodes manuelles et par mesurage lectro-optique interne de la distance (ISO 8311:2013) Gekhlte Kohlenwasserstoffe und verflssigte, nicht auf Erdl basierende gasfrmige Brenns

7、toffe - Kalibrierung von Membrantanks und unabhngigen Prismentanks in Schiffen - Manuelle Messung und Innenmessung nach dem elektrooptischen Distanzmessverfahren (ISO 8311:2013) This European Standard was approved by CEN on 9 November 2013. CEN members are bound to comply with the CEN/CENELEC Intern

8、al Regulations which stipulate the conditions for giving this European Standard the status of a national standard without 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 C

9、EN member. This European Standard exists in three official versions (English, French, German). A version in any other 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 vers

10、ions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,

11、Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2013 CEN All rights of exploitat

12、ion in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 8311:2013 EBS EN ISO 8311:2013EN ISO 8311:2013 (E) 3 Foreword This document (EN ISO 8311:2013) has been prepared by Technical Committee ISO/TC 28 “Petroleum products and lubricants” in collaboration with Te

13、chnical Committee CEN/TC 19 “Gaseous and liquid fuels, lubricants and related products of petroleum, synthetic and biological origin” the secretariat of which is held by NEN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by end

14、orsement, at the latest by June 2014, and conflicting national standards shall be withdrawn at the latest by June 2014. 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 responsible for identifyi

15、ng any or all such patent rights. This document supersedes EN ISO 8311:1995. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic,

16、Denmark, 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 the United Kingdom. Endorsemen

17、t notice The text of ISO 8311:2013 has been approved by CEN as EN ISO 8311:2013 without any modification. BS EN ISO 8311:2013ISO 8311:2013(E) ISO 2013 All rights reserved iiiContents PageForeword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 14 Precautions 34.1 General

18、 . 34.2 Ships condition during calibration . 34.3 Tank distortion 34.4 Comparison with drawings 44.5 Measurements by measuring tape . 44.6 Measurements by electro-optical distance-ranging (EODR) instrument . 44.7 Condition of membrane. 54.8 Safety precautions for work in membrane tanks 55 Equipment

19、. 56 Determination of measuring points . 67 Calibration by manual method 67.1 General . 67.2 Tank length measurement 77.3 Tank width measurement 97.4 Tank height measurement . 127.5 Measurement of bottom undulation and gauge reference height .147.6 Correction for temperature .158 Calibration by elec

20、tro-optical distance-ranging (EODR) method 168.1 General 168.2 Setting up of EODR instrument 168.3 Calibration procedure 179 Additional measurements .199.1 Location of level gauge 199.2 Deadwood . 1910 Calculation .1910.1 General 1910.2 Calculation of tank volume 2010.3 Effect of bottom undulation 2

21、010.4 Area of chamfer portion . 2010.5 Trim corrections . 2110.6 List corrections 2110.7 Combined trim and list corrections . 2110.8 Correction for tank shell expansion or contraction .2111 Report and tables 2212 Recalibration .23Annex A (informative) Uncertainty associated with tank calibration 24A

22、nnex B (informative) Example of tank capacity table (Tank No.3) .36Annex C (informative) Example of trim correction table (Tank No. 1) .38Annex D (informative) Example of list correction table (Tank No. 1) 40Bibliography .42BS EN ISO 8311:2013ISO 8311:2013(E)ForewordISO (the International Organizati

23、on for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established ha

24、s the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The p

25、rocedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the edit

26、orial rules of the ISO/IEC Directives, Part 2. www.iso.org/directivesAttention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights ide

27、ntified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received. www.iso.org/patentsAny trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on th

28、e meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/T

29、C 28, Petroleum products and lubricants, Subcommittee SC 5, Measurement of refrigerated hydrocarbon and non-petroleum based liquefied gaseous fuels.This second edition cancels and replaces the first edition (ISO 8311:1989), which has been technically revised.iv ISO 2013 All rights reservedBS EN ISO

30、8311:2013ISO 8311:2013(E)IntroductionLarge quantities of light hydrocarbons consisting of compounds having one to four carbon atoms are stored and transported by sea as refrigerated liquids at pressures close to atmospheric. These liquids can be divided into two main groups, liquefied natural gas (L

31、NG) and liquefied petroleum gas (LPG). Bulk transportation of these liquids requires special technology in ship design and construction to enable ship-borne transportation to be safe and economical.Quantification of these cargoes in ships tanks for custody transfer purposes has to be of a high order

32、 of accuracy. This International Standard (together with others in the group) specifies methods of internal measurement of ships tanks, from which tank capacity tables can be derived.This International Standard covers calibration techniques applicable to membrane type tanks, i.e. self-supporting ind

33、ependent tanks in which the containment system comprises a relatively thin membrane of either stainless steel or high-nickel steel alloy. This International Standard, with some modification, can also be applicable to the calibration of independent prismatic tanks.Annex A gives uncertainty associated

34、 with the measurement of membrane tanks.Annex B gives an example of a tank capacity table relating partial filling volume as a function of liquid level and Annexes C and D give examples of trim correction and list correction tables, respectively. ISO 2013 All rights reserved vBS EN ISO 8311:2013BS E

35、N ISO 8311:2013Refrigerated hydrocarbon and non-petroleum based liquefied gaseous fuels Calibration of membrane tanks and independent prismatic tanks in ships Manual and internal electro-optical distance-ranging methods1 ScopeThis International Standard specifies a method for the internal measuremen

36、t of membrane tanks used in ships for the transport of refrigerated light hydrocarbon fluids. In addition to the actual process of measurement, it sets out the calculation procedures for compiling the tank capacity table and correction tables to be used for the computation of cargo quantities. This

37、International Standard, with some modification, can also be applicable to the calibration of independent prismatic tanks.For the manual measurement of membrane tanks, the procedures of this International Standard utilize the scaffolding used for the installation of the membranes to support the measu

38、ring equipment but, for the internal electro-optical distance-ranging (EODR) method, other safe means of access to the required measuring positions are intended to be used.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispen

39、sable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 7507-1:2003, Petroleum and liquid petroleum products Calibration of vertical cylindrical tanks Part 1: Strappi

40、ng methodISO 7507-4:2010, Petroleum and liquid petroleum products Calibration of vertical cylindrical tanks Part 4: Internal electro-optical distance-ranging methodIEC 60079-10-1, Explosive atmospheres Part 10-1: Classification of areas Explosive gas atmospheresIEC 60079-10-2, Explosive atmospheres

41、Part 10-2: Classification of areas Combustible dust atmospheresIEC 60825-1, Safety of laser products Part 1: Equipment classification and requirements3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.3.1automatic tank gaugeATGautomatic level gaugeALG

42、instrument that continuously measures liquid height (dip or ullage) in storage tanks3.2chamferslanting surface connecting the walls of a tank with its top or bottom surfaceINTERNATIONAL STANDARD ISO 8311:2013(E) ISO 2013 All rights reserved 1BS EN ISO 8311:2013ISO 8311:2013(E)3.3deadwoodany tank fit

43、ting that affects the capacity of a tank3.4gauge reference pointpoint from which the liquid depth are measured3.5horizontal planeany plane established parallel to the tank bottom3.6horizontal reference lineany horizontal line established by a stringNote 1 to entry: A calibration method using this li

44、ne is adopted as an alternative to direct measurements, where it is considered impractical to take direct measurements.3.7listtransverse inclination of a shipNote 1 to entry: It is expressed in degrees.3.8longitudinal lineline formed by a longitudinal plane crossing a horizontal plane3.9longitudinal

45、 planevertical plane running parallel to the centreline of the tank3.10measuring pointone of a series of points on the inside surface of the tank shell from/to which the distance is measured by a tape or a hand-held laser distance meter in case of manual method, or to which the slope distance, verti

46、cal angles and horizontal angles are measured by use of the electro-optical distance-ranging instrument3.11portleft-hand side of a ship facing forward3.12reference target pointfixed point clearly marked on the inside surface to the tank shell or a prism mounted on a tripod3.13section lineline formed

47、 by a section plane crossing a horizontal plane3.14section planeplane parallel with the fore and aft end walls of a ships tank3.15slope distancedistance measured from the electro-optical distance-ranging instrument to any measuring point or a reference target point2 ISO 2013 All rights reservedBS EN

48、 ISO 8311:2013ISO 8311:2013(E)3.16starboardright-hand side of a ship facing forward3.17tank-calibration reference temperaturetemperature at which the calibration of a tank has been calculated3.18tank capacity tabletank tablecalibration tablecapacity tabletable showing the capacities of, or volumes i

49、n, a tank corresponding to various liquid levels measured from a reference point3.19trimdifference between the fore and aft draught of the vesselNote 1 to entry: When the aft draught is greater than the forward draught, the vessel is said to be trimmed by the stern. When the aft draught is less than the forward draught, the vessel is said to be trimmed by the head.3.20uncertaintyU()estimate characterizing the range of values within which the true value of a measurand liesNote 1 to entry: Various types of uncertainty

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