1、STD-BSI BS EN L2573-1-ENGL 2000 II Lb24bb9 0883344 275 BRITISH STANDARD Welded static non-pressurized thermoplastic titilks - Part 1: General principles The European Standard EN 12573-1:2000 has the status of a British Standard ICs 23.020.10 NO COPYMG WITHOUT BSI PERMISSION EXCEPT AS PERMITIWD BY CO
2、PYRIGHT LAW BS EN 12573-1:2000 National foreword AmdNo. Date This British Standard is the official English ianguage version of EN 12673-12ooO. The UK participation in its preparation was entrusted to Technical Committee PW62, Static thermoplastic tanks, which has the responsibility to: Comments - ai
3、d enquirers to understand the text; - present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interess informa - monitor related international and European developments and promulgate them in the UK. A ist of organizatior represente
4、d on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence I
5、ndex“, or by using the “Find“ facility of the BSI standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a conimct Users of British Stan- are responsible for their correct application. Compliance with a British Standard does not of itself confe
6、r immunity from legai obligations. Summary of pages “his document comprises a front cover, an inside front cover, the EN title page, pages 2 to 27 and a back cover. The BSI copyright notice displayed in this document indicates when the document waslastissued. This British standard, having been prepa
7、red under the direction of the Sector Committee for Materials and Chemicals, was published under the authority of the standards Committee and comes into effect on 15 November 2000 Q BSI 11-2000 ISBN O 680 36716 9 STD=BSI BS EN 12573-1-ENGL 2000 3624669 0883346 048 - EUROPEAN STANDARD NORME EUROPENNE
8、 EUROPAISCHE NORM EN 12573-1 September 2000 ICs 23.020.10 English version Welded static non-pressurized thermoplastic tanks - Part I : General principles Cuves statiques soudes en matires thermoplastiques sans pression - Partie 1 : Principes gnraux Geschweite ortsfeste drucklose Behlter (Tanks) aus
9、Thermoplasten - Teil 1 : Allgemeine Grundstze This European Standard was approved by CEN on 14 February 2000. CEN members are bound to comply with the CENICENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alter
10、ation. Up-to-date lists and bibliographical references concerning sich national standards may be obtained on application to the Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by traislat
11、ion under the responsibility of a CEN member into its own language and notifed to the Management Centre has the same status as theofficial versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy,
12、Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMIITEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FUR NORMUNG Management Centre: rue de Stassart, 36 8-1050 Brussels Q 2000 CEN All rights of exploitation in any form and
13、 by any means reserved worldwide for CEN national Members. Ref. No. EN 12573-1 :2000 E STD-BSI BS EN L2573-h-ENGL 2000 W lb24bb9 0883347 TB4 D Page 2 EN 12573-1 :2000 Contents Page Foreword 3 1 Scope 3 2 Normative references 4 3 Definitions 4 4 Design requirements 4 4.1 General 4 4.2 Safety factor 5
14、 4.3 Material compatibility . 5 4.4 Cahlated design life . 5 4.5 Nozzles 5 4.6 Manhole . 5 4.7 Welded joints . 5 5 Marking 5 6 Packaging, loading, transport and installation . 6 . . . Annex A (informative) Questionnaire on conditions of service for a welded static non-pressurized thermoplastic tank
15、8 Annex B (informative) Design of welded joints . 10 static non-pressurized thermoplastic tanks. . 21 Annex C (informative) Recommendations for packaging, loading, transport and installation of welded Q BSI 11-2000 STD*BSI BS EN 12573-1-ENGL 2000 H Lb24bb9 0883348 910 W Page 3 EN 12573-1 :2000 Forew
16、ord This European Standard has been prepared by Technical Committee CENTTC 266, Thermoplastic static tanks, 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 identical text or by endorsement, at the latest by
17、 March 2001 , and conflicting national standards shall be withdrawn at the latest by March 2001. The primary design calculations are derived from EN 1778, Characteristic values for welded thermoplastic constructions - Determination of allowable stresses and moduli for design of thermoplastic equipme
18、nt. Safety factors have been defined for four categories of tank as detailed in 4.2. EN 12573, Welded static non-pressurized thermoplastic tanks, consists of: Part I : General principles; Part 2: Calculation of vertical cylindrical tanks; Part 3: Design and calculation for single skin rectangular ta
19、nks; Part 4: Design and calculation of Ranged joints. This standard is intended to be used as pari of a certification scheme covered by EN IS0 9001 including items such as the approval testing of welders according to prEN 13067. Additional to the requirements of this standard, it is necessary to est
20、ablish requirements concerning the inspection of fabrication, the tightness test, frequency of tests and the type of certificate in accordance with EN IS0 9001. The informative annex A is a questionnaire for the purchaser on conditions of service for a welded static non-pressurized thermoplastic tan
21、k. The informative annex B gives examples of construction details for the design of welded joints. The performance of thermoplastic tanks is also dependent on their transport and site installation and recommendations in these areas are given in the informative annex C. According to the CENICENELEC I
22、nternal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Notway, Portugal, Spain, Sweden, Switzerl
23、and and the United Kingdom. 1 Scope This standard specifies general principles for welded static non-pressurized thermoplastic tanks. It applies to work shop and site fabrications. The standard covers tanks with a capacity of 0,45 m3 (450 litres) and above. Tanks which comply with the requirements o
24、f this standard are not intended to withstand internal pressure or vacuum other than that which may occur during the transfer of fluids (including gases) in their normal operation. Q BSI 11-2000 STD-BSI BS EN lS573-l-ENGL 2000 I Ib24bb9 08833ii9 057 E Page 4 EN 12573-1 2000 This standard applies to
25、tanks fabricated in the following thermoplastics: Polyethylene (PE) Polypropylene (PP) Poly (vinyl chloride) (PVC) Poly (vinylidene fluoride) (WDF) NOTE: Design data for these materials is given in EN 1778. 2 Normative references This European Standard incorporates by dated or undated reference, pro
26、visions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it
27、 by amendment or revision. For undated references the latest edition of the publication referred to applies. EN 1778 Characteristic values for welded thermoplatstic constructions - Determination of allowable stresses and moduli for design of thermoplastic equipment. prEN 13067 Plastics welding perso
28、nnel - Approval testing of welders - Thermoplastics welded assemblies. EN IS0 9001 Quality systems - Model for quality assurance in designdevelopment, production, installation and servicing (IS0 9001:1994). 3 Definitions For the purposes of this standard, the following definitions apply. 3.1 brimful
29、 capacity volume of water held by the tank filled through the filling orifice to the point of overflowing 3.2 maximum filling capacity value of 95 % of the brimful capacity 4 Design requirements 4.1 General The manufacturer shall determine from the purchaser all factors relevant to the design of the
30、 tank. A recommended enquiry form for this purpose is given in annex A. Q BSI 11-2000 STD.BS1 BS EN 12573-1-ENGL 2000 h 1b24bb 0883350 579 Page 5 EN 12573-1 :2000 4.2 Safety factor In the design calculation, an overall safety factor (S) for the tank shall be selected and agreed between the contracti
31、ng partners. There are four categories of tank: Category 2,O (corresponding to a safety factor 2,O) Category 1,7 (corresponding to a safety factor 1,7) Category 13 (corresponding to a safety factor 13) Category 1,3 (corresponding to a safety factor 1,3) 4.3 Material compatibility Compatibility with
32、contents shall be established using the procedures set down in EN 1778. 4.4 Calculated design life The minimum calculated design life for a welded static non-pressurized thermoplastic tank shall be at least 10 years and 1 year for bunds subjected to liquid load. When specified by the purchaser, this
33、 calculated design life may be extended to a maximum of 25 years. 4.5 Nozzles An inlet and an outlet nozzle are required. In the case of closed tanks, to reduce the risk of pressurizing the tank, a venting nozzle with a nominal diameter of 1,3 times the nominal diameter of the largest inlet or outle
34、t nozzle is required. 4.6 Manhole In the case of closed tanks with a capacity of 2,O m3 (2 O00 litres) and above, at least one manhole shall be provided to allow internal access and retrieval. 4.7 Welded joints Recommendations for the design of welded joints are given in annex B. 5 Marking Tanks sha
35、ll be marked by means of an attached identification plate with, at least, the following information: a) tank manufacturer; b) material of construction; c) designed contents or density, chemical reduction factor, and design temperature; d) maximum filling capacity; e) date of fabrication; 9 manufactu
36、rers identification no.; g) location for use; internal or external; h) category of tank; i) calculated desing life; j) the number of this standard. An example of an identification plate is shown in Figure 1 Q BSI 11 -2000 STDmBSI BS EN L2573-L-ENGL 2000 W 3b24bb9 0883353 405 W Page 6 EN 12573-1 :200
37、0 6 Packaging, loading, transport and installation Recommendations for the packaging, loading, transport and installation of welded static non-pressurized thermoplastic tanks are given in annex C. NOTE: It is recommended that information giving details of installation, any change of use, etc., shoul
38、d be recorded by the user when such events occur. This will resuli in a continuous record of a tanks service histoty. O BSI 11-2000 o P u) I L 4 c im pi c o 4 IA z 4 E Y z 2 s ua 83 Q, c r i? ua r 2 0 a m a o U U O W F a n v) c z W c 2 O o z 8 W Uj n o O O I! m Q) r O W J z k I n n W 4 3 o o 4 STD.B
39、S1 BS EN LS73-L-ENGL 2000 H Lb24bb 0883353 288 H Page 8 EN 12573-1 :2000 Annex A (informative) Questionnaire on conditions of service for a welded static non-pressurized thermoplastic tank This is a proposed questionnaire on conditions of service for a welded static non-pressurized thermoplastic tan
40、k which should be completed by either the fabricator, the end user or other competent persons. * Please tick boxes where appropriate and give specific numbers where requested. 1. Type of construction and dimensions* a) Circular U c) Limiting dimensions b) Rectangular O d) Maximum filling capacity (m
41、3) 2. Serviceloperating conditions* a) b) Agreed category of tank Calculated design life of tank (10 years minimum) 10 years O 25 years O Intermediate life time (please state) U c) Range of ambient temperature to be experienced during initial proposed service (please state) (“C) e) Temperature profi
42、le expected during working cycle (“C and time) 9 State if tank will be installed Internai o External o g) Pressure or vacuum conditions 3. Proposed content* 3 a) Density (kglm ) b) Detail constituents by completing the table below: No. MatenaUlngredient Concentration (%) Proportion of total (%) 1. 2
43、. Q BSI li -2000 STD-BSI BS EN L2573-L-ENGL 2000 = Lb24bb 088335Li 114 m Page 9 EN 12573-1 :2000 3. 4. c) List of solvents expected . d) List of detergents expected . 4. Additional equipment Give details of any additional items which will be used in cor,mction with the tank, e.g. agitators, hoppers,
44、 air agitators, seal pots, fume scrubbers. NOTE 1: The required design life c, a tank is the pei.dd of time which is used in the determination of the tank dimensions (e.g. wall thickness) and allowable stresses. It is not the period of warranty. Any warranty needs to be agreed between the customer a
45、nd the tank fabricator. NOTE 2: If the nature of the intended contents of the tanks changes, then it is recommended that the user seeks advice from the manufacturer or other appropriate authorities. Date Name (please print) Name of Company Tel. No. Signature Position Address Fax No. O BSI 11-2000 ST
46、D-BSI BS EN lt573-L-ENGL 2000 m lb24bb9 0883355 050 m Page 10 EN 12573-1 :2000 Annex 6 (informative) Design of welded joints B.l Symbols and abbreviations For the purposes of this annex the following symbols and abbreviations apply: a is the depth of the weld seam, in millimetres d is the nominal in
47、side diameter of the tank, in millimetres fi is the depth of the weld undercut, in millimetres f2 is the height of the external weld built, in millimetres h is the height of the stiffener, in millimetres ZG is the length of the gap between two weld seams in the case of a both side weid joint, in mil
48、limetres t is the skin thickness, in millimetres t is the thickness of the base, in millimetres is the thickness of the roof, in millimetres k(i) is the thickness of the band (i) in the case of varying skin thickness tanks, in millimetres ri is the thickness of a construction element, in millimetres
49、 01 is the included angle, in degrees B.2 General welding principles The seams should be dimensioned so that in the case of supporting seams the cross-sections present are fully connected or in the case of filler welds the diameters required for load transmission are present. Butt welds are preferred. All joints should be counter-welded at the base of the weld or welded from both sides. Seams accessible from one side should have a deep penetration at the base of the weld in order to prevent gaps on the inaccessible side. With butt welds of different wall thickn
