1、May 2015 Translation by DIN-Sprachendienst.English price group 12No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 71
2、.100.80!%Bt“2315881www.din.deDDIN EN 12876Chemicals used for treatment of water intended for humanconsumption Oxygen;English version EN 12876:2015,English translation of DIN EN 12876:2015-05Produkte zur Aufbereitung von Wasser fr den menschlichen Gebrauch Sauerstoff;Englische Fassung EN 12876:2015,E
3、nglische bersetzung von DIN EN 12876:2015-05Produits chimiques utiliss pour le traitement de leau destine la consommationhumaine Oxygne;Version anglaise EN 12876:2015,Traduction anglaise de DIN EN 12876:2015-05SupersedesDIN EN 12876:2009-04www.beuth.deDocument comprises 20 pagesIn case of doubt, the
4、 German-language original shall be considered authoritative.04.15 DIN EN 12876:2015-05 2 A comma is used as the decimal marker. National foreword This document (EN 12876:2015) has been prepared by Technical Committee CEN/TC 164 “Water supply” (Secretariat: AFNOR, France). The responsible German body
5、 involved in its preparation was the DIN-Normenausschuss Wasserwesen (DIN Standards Committee Water Practice), Working Committee NA 119-07-04-01 UA Aufbereitungsstoffe und -anlagen. Users of this standard are advised of the reservations stated in the Introduction of the European Standard and should
6、note that national regulations exist in Germany dealing with water for human consumption, in particular the Trinkwasserverordnung (TrinkwV 2001) (German Drinking Water Ordinance). Amendments This standard differs from DIN EN 12876:2009-04 as follows: a) specifications concerning hazard and safety re
7、lated symbols have been brought in line with the “Globally Harmonized System of Classification, Labelling and Packaging of Chemicals (GHS)” (Global harmonisiertes System zur Einstufung und Kennzeichnung von Chemikalien). Previous editions DIN EN 12876: 2000-09, 2009-04 National Annex NA (informative
8、) Bibliography Verordnung ber die Qualitt von Wasser fr den menschlichen Gebrauch (Trinkwasserverordnung TrinkwV 2001) (German Drinking Water Ordinance), as of 02 August 2013 (BGBI. (German Federal Law Gazette) I, 2013, no. 46, pp. 2977-3004), as amended by Article 4, Paragraph 22 of the Act of 07 A
9、ugust 2013 (BGBI. I, no. 48, pp. 3154-3211) EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12876 March 2015 ICS 71.100.80 Supersedes EN 12876:2009English Version Chemicals used for treatment of water intended for human consumption - Oxygen Produits chimiques utiliss pour le traitement deau des
10、tine la consommation humaine - Oxygne Produkte zur Aufbereitung von Wasser fr den menschlichen Gebrauch - Sauerstoff This European Standard was approved by CEN on 20 December 2014. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving thi
11、s 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 CEN member. This European Standard exists in three official v
12、ersions (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 versions. CEN members are the national standards bodies of Austr
13、ia, 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, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden
14、, 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 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN
15、national Members. Ref. No. EN 12876:2015 EEN 12876:2015 (E) 2 Contents Page Foreword 4 Introduction .5 1 Scope 6 2 Normative references 6 3 Description .6 3.1 Identification .6 3.1.1 Chemical name .6 3.1.2 Synonym or common name 6 3.1.3 Relative molecular mass .6 3.1.4 Empirical formula.6 3.1.5 Chem
16、ical formula .6 3.1.6 CAS Registry Number .6 3.1.7 EINECS reference 6 3.2 Commercial forms .6 3.3 Physical properties 7 3.3.1 Appearance, odour and taste .7 3.3.2 Density 7 3.3.3 Solubility of pure oxygen (in water) .7 3.3.4 Vapour pressure 7 3.3.5 Boiling point at 100 kPa 3).7 3.3.6 Melting point .
17、7 3.3.7 Specific heat .7 3.3.8 Viscosity (dynamic) .7 3.3.9 Critical temperature .7 3.3.10 Critical pressure.7 3.3.11 Physical hardness .8 3.4 Chemical properties 8 4 Purity criteria 8 4.1 General 8 4.2 Composition of commercial product .8 4.3 Impurities and main by-products .8 4.4 Chemical paramete
18、rs 8 5 Test methods 9 5.1 Sampling .9 5.2 Analyses .9 5.2.1 Main product 9 5.2.2 Impurities . 11 6 Labelling - Transportation - Storage . 11 6.1 Means of delivery 11 6.2 Labelling according to the EU legislation 11 6.3 Transportation regulations and labelling . 12 6.4 Marking 13 6.5 Storage . 13 6.5
19、.1 Containers . 13 6.5.2 Long term stability 13 6.5.3 Storage incompatibilities . 13 Annex A (informative) General information on oxygen . 14 DIN EN 12876:2015-05 EN 12876:2015 (E) 3 A.1 Origin 14 A.1.1 Raw materials 14 A.1.2 Manufacturing process . 14 A.2 Use 14 A.2.1 Function 14 A.2.2 Form in whic
20、h it is used 14 A.2.3 Treatment dose 14 A.2.4 Means of application . 14 A.2.5 Secondary effects 14 A.2.6 Removal of excess product 14 A.3 Monitoring of oxygen 14 A.3.1 Chromatographic method. 14 A.3.2 Oxymeters based on electrochemical cells 15 A.3.3 Other methods . 15 Annex B (normative) General ru
21、les relating to safety 16 B.1 Rules for safe handling and use 16 B.2 Emergency procedures . 16 B.2.1 First aid . 16 B.2.2 Leaks . 16 B.2.3 Fire 16 Annex C (normative) Determination of hydrocarbons content (Methane Index) . 17 C.1 General . 17 C.2 Principle 17 C.3 Apparatus . 17 C.4 Calibration 17 C.
22、5 Procedure . 17 C.6 Accuracy. 17 Bibliography 18 DIN EN 12876:2015-05 EN 12876:2015 (E) 4 Foreword This document (EN 12876:2015) has been prepared by Technical Committee CEN/TC 164 “Water supply”, the secretariat of which is held by AFNOR. This European Standard shall be given the status of a natio
23、nal standard, either by publication of an identical text or by endorsement, at the latest by September 2015, and conflicting national standards shall be withdrawn at the latest by September 2015. This document supersedes EN 12876:2009. Attention is drawn to the possibility that some of the elements
24、of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. Significant technical difference between this edition and EN 12876:2009 is as follows: a) deletion of reference to EU Directive 67/548/EEC of June 27,
25、 1967 in order to take into account the latest Regulation in force (see 3); b) 6.2 updating of risk and safety labelling according to EU Regulation 3 and its latest Adaptations to Technical Progress). According to the CEN-CENELEC Internal Regulations, the national standards organizations of the foll
26、owing 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, Luxembourg, Malta, Netherlands,
27、Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 12876:2015-05 EN 12876:2015 (E) 5 Introduction In respect of potential adverse effects on the quality of water intended for human consumption, caused by the product covered by thi
28、s European Standard: a) this European Standard provides no information as to whether the product may be used without restriction in any of the Member States of the EU or EFTA; b) it should be noted that, while awaiting the adoption of verifiable European criteria, existing national regulations conce
29、rning the use and/or the characteristics of this product remain in force. NOTE Conformity with the standard does not confer or imply acceptance or approval of the product in any of the Member States of the EU or EFTA. The use of the product covered by this European Standard is subject to regulation
30、or control by National Authorities. DIN EN 12876:2015-05 EN 12876:2015 (E) 6 1 Scope This European Standard is applicable to oxygen used for treatment of water intended for human consumption. It describes the characteristics of oxygen and specifies the requirements and the corresponding test methods
31、 for oxygen. It gives information on its use in water treatment. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, t
32、he latest edition of the referenced document (including any amendments) applies. EN 1089-3, Transportable gas cylinders - Gas cylinder identification (excluding LPG) - Part 3: Colour coding 3 Description 3.1 Identification 3.1.1 Chemical name Oxygen. 3.1.2 Synonym or common name None. 3.1.3 Relative
33、 molecular mass 32,00 3.1.4 Empirical formula O23.1.5 Chemical formula O = O 3.1.6 CAS Registry Number1)7782-44-7 3.1.7 EINECS reference2)231-956-9 3.2 Commercial forms Gas or cryogenic liquid. 1)Chemical Abstract Service Registry Number. 2)European Inventory of Existing Commercial Chemical Substanc
34、es. DIN EN 12876:2015-05 EN 12876:2015 (E) 7 3.3 Physical properties 3.3.1 Appearance, odour and taste The product is a colourless, odourless, tasteless gas or a bluish liquid. 3.3.2 Density Liquid: 1,141 g/ml at 183 C. Gas: 1,337 g/dm3at 15 C and 101,3 kPa 3). 3.3.3 Solubility of pure oxygen (in wa
35、ter) The solubility of oxygen at a pressure of 101,3 kPa 3)in pure water, depending on the temperature, is: a) 61 mg/l at 5 C; b) 45 mg/l at 15 C; c) 36 mg/l at 25 C. 3.3.4 Vapour pressure Oxygen is a gas at 273,15 K and 101,3 kPa. 3.3.5 Boiling point at 100 kPa 3)- 182,97 C. 3.3.6 Melting point Not
36、 applicable. 3.3.7 Specific heat At a constant pressure 100 kPa: - 919 J/(kgxK) at 15 C; - 920 J/(kgxK) at 25 C. 3.3.8 Viscosity (dynamic) 2,0720 102mPaxs at 100 kPa and 27 C. 3.3.9 Critical temperature 118,6 C. 3.3.10 Critical pressure 5 043 kPa 3)100 kPa = 1 bar. DIN EN 12876:2015-05 EN 12876:2015
37、 (E) 8 3.3.11 Physical hardness Not applicable. 3.4 Chemical properties Oxygen is an oxidizing agent and a supporter of combustion. Dangerous reactions are possible with organic compounds and other combustible substances. NOTE Oxygen-rich atmospheres (a volume fraction higher than 25 % of oxygen) in
38、crease the rate of combustion which can lead to explosive reactions. 4 Purity criteria 4.1 General This European Standard specifies the minimum purity requirements for oxygen used for the treatment of water intended for human consumption. Limits are given for impurities commonly present in the produ
39、ct. Depending on the raw material and the manufacturing process other impurities may be present and, if so, this shall be notified to the user and when necessary to relevant authorities. Users of this product should check the national regulations in order to clarify whether it is of appropriate puri
40、ty for treatment of water intended for human consumption, taking into account raw water quality, required dosage, contents of other impurities and additives used in the product not stated in the product standard. Limits have been given for impurities and chemicals parameters where these are likely t
41、o be present in significant quantities from the current production process and raw materials. If the production process or raw materials lead(s) to significant quantities of impurities, by-products or additives being present, this shall be notified to the user. 4.2 Composition of commercial product
42、Two grades of oxygen exist varying from the manufacturing process: Grade A for cryogenically derived oxygen, the minimum concentration of oxygen shall be a volume fraction of 99,5 %. Grade B for oxygen manufactured with non cryogenic methods, the minimum concentration of oxygen shall be a volume fra
43、ction of 90 %. 4.3 Impurities and main by-products The hydrocarbons content (as Methane Index) shall not exceed a volume fraction of 50 ppm. NOTE Depending on the production route, the product can contain quantities of water, nitrogen, argon, carbon dioxide and other rare gases which do not affect i
44、ts use in water treatment. 4.4 Chemical parameters NOTE For the purpose of this standard, “chemical parameters” are those defined in the EU Directive 98/83/EC of 03 November 1998 (see 2). Commercial oxygen does not contain significant levels of chemical parameters. DIN EN 12876:2015-05 EN 12876:2015
45、 (E) 9 5 Test methods 5.1 Sampling All or part of the gas flow is sent through the analyser. Sample in a volumetric pipette of a few litres with a positive pressure from 150 kPa to 200 kPa or with an automatic sampler. When sampling gaseous oxygen the following shall apply: sample lines and ancillar
46、y equipment shall be compatible with use with oxygen, be clean, leak tight and have the appropriate pressure rating to deliver the sample safely and without contamination to the analyser; the sample taken shall be representative and apparatus shall be operated in accordance with the manufacturers re
47、commended operating procedures. NOTE Flow rates to the analyser can require precise control, following pressure regulation, if automatic flow control devices are not an integral part of the measurement system. 5.2 Analyses 5.2.1 Main product 5.2.1.1 General The most commonly used method of oxygen co
48、ntent measurement is the paramagnetic method. This method has an accuracy of 0,01 % volume fraction. 5.2.1.2 Principle Magneto-dynamic oxygen analyzers are based on Faradays principle of determining the magnetic susceptibility of a gas by measuring the force developed by a strong non-uniform magnetic field on a diamagnetic test body suspended in the sample gas. The test body of all measuring cells in paramagnetic oxygen analyzers consists of two nitrogen-filled quartz spheres arranged in the form of a
