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1、BRITISH STANDARD BS ISO 7507-1:2003 Petroleum and liquid petroleum products Calibration of vertical cylindrical tanks Part 1: Strapping method ICS 75.180.30 ? Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 06:34:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 7507-1:2003 This British St
2、andard was published under the authority of the Standards Policy and Strategy Committee on 10 February 2004 BSI 10 February 2004 ISBN 0 580 43388 9 National foreword This British Standard reproduces verbatim ISO 7507-1:2003 and implements it as the UK national standard. It supersedes BS 7723-1:1994
3、and BS 7723-6:1998 which are withdrawn. The UK participation in its preparation was entrusted by Technical Committee PTI/12, Petroleum measurement and sampling, to Subcommittee PTI/12/1, Static and dynamic petroleum measurement, which has the responsibility to: A list of organizations represented on
4、 this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the
5、“Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from leg
6、al obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. S
7、ummary of pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii to v, a blank page, pages 1 to 62, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued sinc
8、e publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 06:34:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Reference number ISO 7507-1:2003(E) INTERNATIONAL STANDARD ISO 7507-1 Second edition 2003-12-15 Petroleum and liquid petroleum products Calibration of vertic
9、al cylindrical tanks Part 1: Strapping method Ptrole et produits ptroliers liquides Jaugeage des rservoirs cylindriques verticaux Partie 1: Mthode par ceinturage BS ISO 75071:2003 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 06:34:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI DPlcsid Fremi
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15、ts seredevr iii Contents Page Forewordiv Introduction v 1 Scope1 2 Normative references .1 3 Terms and definitions.2 4 Precautions5 5 Equipment6 6 General requirements.7 7 Circumference measurements.7 8 Other measurements on tank shell plates10 9 Deadwood10 10 Tank bottoms.11 11 Measurement of tilt.
16、11 12 Floating-roof tanks11 13 Recalibration .12 14 Computation of tank capacity tables General rules .12 15 Form of tank capacity tables .13 16 Computation of open capacity 13 17 Construction of final tables17 Annex A (normative) Specification for equipment used in strapping 23 Annex B (informative
17、) Recommendations for monitoring, checking and verification of tank calibration and capacity table26 Annex C (informative) Tank calibration data and calculation sheet32 Annex D (informative) Tank calibration uncertainties 36 Annex E (informative) Tank shell temperature determination.47 Annex F (norm
18、ative) Gauge tape temperature correction .48 Annex G (informative) Expansion due to liquid head.50 Annex H (normative) Expansion due to temperature .58 Annex I (normative) Certificate of calibration61 Bibliography .62 BS ISO 75071:2003 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 06:34:26
19、GMT+00:00 2006, Uncontrolled Copy, (c) BSI iv Foreword ISO (the International Organization 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 mem
20、ber body interested in a subject for which a technical committee has been established has 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 El
21、ectrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards ado
22、pted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of pat
23、ent rights. ISO shall not be held responsible for identifying any or all such patent rights. International Standard ISO 7507-1 was prepared by Technical Committee ISO/TC 28, Petroleum products and lubricants, Subcommittee SC 3, Static petroleum measurement. This second edition cancels and replaces t
24、he first edition (ISO 7507-1:1993). It also cancels and replaces ISO 7507-6:1997, the subject of which is now included in this part of ISO 7507. ISO 7507 consists of the following parts, under the general title Petroleum and liquid petroleum products Calibration of vertical cylindrical tanks: Part 1
25、: Strapping method Part 2: Optical-reference-line method Part 3: Optical-triangulation method Part 4: Internal electro-optical distance-ranging method Part 5: External electro-optical distance-ranging method Part 6: Recommendations for monitoring, checking and verification of tank calibration and ca
26、pacity table BS ISO 75071:2003 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 06:34:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI I SO 3002 All irhgts seredevr v Introduction This part of ISO 7507 forms part of a series on tank calibration including the following: ISO 7507-2:1993, Petroleum
27、and liquid petroleum products Calibration of vertical cylindrical tanks Part 2: Optical-reference-line method ISO 7507-3:1993, Petroleum and liquid petroleum products Calibration of vertical cylindrical tanks Part 3: Optical-triangulation method ISO 7507-4:1995, Petroleum and liquid petroleum produc
28、ts Calibration of vertical cylindrical tanks Part 4: Internal electro-optical distance-ranging method ISO 7507-5:2000, Petroleum and liquid petroleum products Calibration of vertical cylindrical tanks Part 5: External electro-optical distance-ranging method ISO 7507-6:1997, Recommendations for monit
29、oring, checking and verification of tank calibration and capacity table ISO 8311:1989, Refrigerated light hydrocarbon fluids Calibration of membrane tanks and independent prismatic tanks in ships Physical measurement ISO 9091-1:1991, Refrigerated light hydrocarbon fluids Calibration of spherical tan
30、ks in ships Part 1: Stereo-photogrammetry ISO 9091-2:1992, Refrigerated light hydrocarbon fluids Calibration of spherical tanks in ships Part 2: Triangulation measurement The strapping method for the calibration of vertical cylindrical tanks has been used for many years and is a recognized method of
31、 determining the capacity of storage tanks from measurements of the circumference of a tank at various heights. The strapping method is also often used to establish a reference circumference at a selected height to use as a datum in other methods of tank calibration. BS ISO 75071:2003 Licensed Copy:
32、 sheffieldun sheffieldun, na, Mon Nov 27 06:34:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 06:34:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI INTENRATIONAL TSANDADR IS-7057 O1:(3002E) I SO 3002 All irhgts seredevr 1 Petroleum and liquid petro
33、leum products Calibration of vertical cylindrical tanks Part 1: Strapping method 1 Scope 1.1 This part of ISO 7507 specifies a method for the calibration of substantially vertical cylindrical tanks by measuring the tank using a strapping tape. 1.2 This method is known as the “strapping method” and i
34、s suitable for use as a working method, a reference method or a referee method. NOTE For the reference method, the number of strappings required will be specified in the standard which refers to this part of ISO 7507. 1.3 The operation of strapping, the corrections to be made and the calculations le
35、ading to the compilation of the tank capacity table are described. 1.4 This method does not apply to abnormally deformed, e.g. dented or non-circular, tanks. 1.5 This method is suitable for tilted tanks with a deviation of up to 3 % from the vertical, provided that a correction for the measured tilt
36、 is applied in the calculations. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) ap
37、plies. ISO 91-1:1992, Petroleum measurement tables Part 1: Tables based on reference temperatures of 15 C and 60 F ISO 3675:1998, Crude petroleum and liquid petroleum products Laboratory determination of density Hydrometer method ISO 4269:2001, Petroleum and liquid petroleum products Tank calibratio
38、n by liquid measurement Incremental method using volumetric meters BS ISO 75071:2003 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 06:34:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 2 3 Terms and definitions For the purposes of this document and subsequent parts of ISO 7507, the following
39、terms and definitions apply. 3.1 argument independent variable of a function NOTE A table is entered with value(s) of the independent variable(s), the value(s) extracted from the table being known as the dependent value(s). 3.2 bottom calibration procedure to determine the quantity of liquid contain
40、ed in a tank below the calibration datum-point 3.3 calibration process of determining the capacity of a tank, or the partial capacities corresponding to different levels 3.4 capacity total volume of a tank 3.5 capacity table tank table tank capacity table table showing the capacities of, or volumes
41、in, a tank corresponding to various liquid levels measured from a stable reference point 3.6 course one circumferential ring of plates in a tank 3.7 calibration datum-point point used as the datum in the preparation of a calibration table NOTE Course heights and the effective levels of deadwood are
42、measured from this point, to which the bottom calibration is also related. 3.8 deadwood any tank fitting that affects the capacity of the tank NOTE Deadwood is referred to as “positive deadwood” when the capacity of the fitting increases the effective capacity of the tank, or “negative deadwood” whe
43、n the volume of the fitting displaces liquid and reduces the effective capacity. 3.9 dip innage depth of a liquid in a tank above the dipping datum-point 3.10 dip-hatch gauge-hatch opening in the top of a tank through which dipping and sampling operations are carried out BS ISO 75071:2003 Licensed C
44、opy: sheffieldun sheffieldun, na, Mon Nov 27 06:34:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI I SO 3002 All irhgts seredevr 3 3.11 dip-point point on the dip-plate which the dip-weight touches during gauging and from which the measurements of the oil and water depths are taken NOTE The dip-point
45、usually corresponds to the datum-point, but when this is not so, the difference in level between the datum-point and the dip-point has to be allowed for in the calibration table. 3.12 dip-plate striking-plate positioned below the dip-hatch NOTE The position of the dip-plate should not be affected by
46、 bottom or wall movements. 3.13 dip-tape graduated steel tape used for measuring the depth of the oil or water in a tank, either directly by dipping or indirectly by ullage 3.14 dip-weight weight attached to a steel dip-tape, of sufficient mass to keep the tape taut and of such shape as to facilitat
47、e the penetration of any sludge that might be present on the dip-point or the dip-plate 3.15 floating cover screen lightweight cover of either metal or plastics material designed to float on the surface of a liquid in a tank NOTE The cover rests upon the liquid surface and is used to retard evaporat
48、ion of volatile products in a tank. 3.16 floating-roof tank tank in which the roof floats freely on the surface of the liquid contents, except at low levels when the weight of the roof is taken through its supports by the tank bottom 3.17 function when two variable quantities are interrelated, one q
49、uantity is said to be a function of the other NOTE In the context of tank calibration, the volume of liquid contained in a tank is said to be a function of the dip or of the ullage. 3.18 gauging process of taking all the necessary measurements in a tank in order to determine the quantity of liquid that it contains 3.19 interpolation process of obtaining the value of a function corresponding to a