SANS 10298-2009 Indirect small to medium-sized gas chlorination systems for the disinfection of water《水消毒用间接小于中型的气体氯化系统》.pdf
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1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA
2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any
3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ISBN 978-0-626-22842-2 SANS 10298:2009Edition 1.2SOUTH AFRICAN NATIONAL STANDARD Indirect small to medium-sized gas chlorination systems for the disinfec
4、tion of water Published by SABS Standards Division 1 Dr Lategan Road Groenkloof Private Bag X191 Pretoria 0001Tel: +27 12 428 7911 Fax: +27 12 344 1568 www.sabs.co.za SABS SANS 10298:2009 Edition 1.2 Table of changes Change No. Date Scope Amdt 1 2005 Amended to change the designation of SABS standar
5、ds to SANS standards and to update the referenced standards. Amdt 2 2009 Amended to update a referenced standard and to move reference to legislation to the foreword. Foreword This South African standard was approved by National Committee SABS TC 138, Water and sanitation Equipment and systems, in a
6、ccordance with procedures of the SABS Standards Division, in compliance with annex 3 of the WTO/TBT agreement. This document was published in September 2009. This document supersedes SANS 10298:2005 (edition 1.1). A vertical line in the margin shows where the text has been technically modified by am
7、endment No. 2. Annex A is for information only. A reference is made in 5.1.1.1, 6.2.5 and in the NOTE to 6.2.5 to “relevant safety legislation”. In South Africa this means the Occupational Health and Safety Act, 1993 (Act No. 85 of 1993). A reference is made in 5.1.1.1 to “relevant legislation”. In
8、South Africa this means the Mines and Works Act, 1956 (Act No. 27 of 1956). SANS 10298:2009 Edition 1.2 1 Contents Page Foreword 1 Scope . 3 2 Normative references . 3 3 Definitions 3 4 Chlorination equipment and ancillaries 6 4.1 System type description 6 4.2 Classification of chlorination systems
9、by size . 6 4.3 Materials 7 4.4 Containers . 10 5 Layout and installation . 12 5.1 Components 12 5.2 Jointing, gaskets and sealing materials 13 5.3 The design of chlorine rooms 14 5.4 Characteristics of chlorine in piping systems 14 5.5 Preparation of systems for use . 15 6 Operational safety 16 6.1
10、 Responsibilities in the event of an emergency 16 6.2 General safety requirements . 16 6.3 Emergency action plan 17 6.4 Safety and warning signs 17 6.5 Personal protective equipment . 17 6.6 Handling of containers 18 6.7 Medical management 19 6.8 Information for physicians . 21 7 Maintenance . 22 7.
11、1 General 22 7.2 Leaks . 23 7.3 Equipment maintenance . 23 7.4 Use of arc-producing and flame-producing apparatus 24 8 Training 24 Figure 1-7 25-30 Annex A Additional information 31 SANS 10298:2009 Edition 1.2 2 This page is intentionally left blank SANS 10298:2009 Edition 1.2 3 Indirect small to me
12、dium-sized gas chlorination systems for the disinfection of water 1 Scope This standard gives recommendations in respect of the selection of equipment, installation practice and the maintenance of small to medium-sized chlorine gas installations. It gives recommendations for vacuum type systems with
13、 up to six cylinders or a single “ton“ container of nominal capacity 1 000 kg. It lays down procedures to be followed to minimize risks to the safety of persons and the environment in terms of exposure to chlorine. General guidelines regarding medical treatment of persons exposed to chlorine are inc
14、luded. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this standard. All standards are subject to revision and, since any reference to a standard is deemed to be a reference to the latest edition of that standard, par
15、ties to agreements based on this standard are encouraged to take steps to ensure the use of the most recent editions of the standards indicated below. Information on currently valid national and international standards can be obtained from the SABS Standards Division. SANS 9956-3/ISO 9956-3 (SABS IS
16、O 9956-3), Specification and approval of welding procedures for metallic materials Part 3: Welding procedure tests for the arc welding of steels. Amdt 1; Amdt 2 SANS 10019, Transportable containers for compressed, dissolved and liquefied gases Basic design, manufacture, use and maintenance. Amdt 1 S
17、ANS 10140-3, Identification colour markings Part 3: Contents of pipelines. SANS 15614-1/ISO 15614, Specification and qualification of welding procedures for metallic materials Welding procedure test Part 1: Arc and gas welding of steels and arc welding of nickel and nickel alloys. Amdt 2 3 Definitio
18、ns For the purposes of this standard, the following definitions apply: 3.1 approved inspection authority organization that is approved by the regulatory authority SANS 10298:2009 Edition 1.2 4 3.2 bronchospasm spasmodic constriction of the bronchial tubes 3.3 chlorination use of chlorine to disinfec
19、t water 3.4 chlorinator composite device that regulates the flow of gaseous chlorine into a water system 3.5 chlorine detector sensing device that detects the presence of chlorine gas in the atmosphere, activates an alarm or shuts off the system, and starts a safety procedure 3.6 chlorine filter dev
20、ice installed in a chlorination system to remove particulate matter 3.7 chlorine gas; gaseous chlorine element chlorine in the gaseous state 3.8 chlorine solution solution of chlorine in water 3.9 container container manufactured in accordance with SANS 10019 that is used for the transportation or s
21、torage (or both) of chlorine 3.10 corticosteroid any of the hormones of the adrenal cortex or any synthetic substitute 3.11 cylinder portable chlorine container of maximum (filled) mass 70 kg that is used only in the vertical position and that supplies only gaseous chlorine 3.12 dermatitis inflamati
22、on of the skin 3.13 diffuser device that disperses chlorine gas before exposure of the gas to water in order to maximize its absorption 3.14 dosing unit device that indicates chlorine flow rate SANS 10298:2009 Edition 1.2 5 3.15 dry chlorine liquid or gaseous chlorine product that contains no more t
23、han 150 g of water per gram of product NOTE The dry compound used in swimming pool sanitation is not dry chlorine. 3.16 emesis vomiting 3.17 evaporator vaporizer device in which liquid chlorine is converted to gaseous chlorine by the addition of heat and that is mainly used in high-rate chlorination
24、 systems 3.18 flow regulator device that controls the flow of chlorine to a water system at a constant rate 3.19 injector vacuum injector that allows chlorine gas to be drawn into a water solution under operating conditions only 3.20 lacrimation formation of tears in the eyes 3.21 liquid chlorine ca
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