NSF 62-2016 Drinking Water Distillation Systems.pdf

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1、NSF International Standard / American National StandardNSF/ANSI 62 - 2016Drinking Water Distillation SystemsNSF International, an independent, not-for-profit, non-governmental organization, is dedicated to being the leading global supplier of public health and safety-based risk management services s

2、erving the interests of all stakeholders. This Standard is subject to revision. Contact NSF to confirm this revision is current. Users of this Standard may request clarifications and interpretations, or propose revisions by contacting: Chair, Joint Committee on Drinking Water Treatment Units c/o NSF

3、 International 789 North Dixboro Road, P. O. Box 130140 Ann Arbor, Michigan 48113-0140 USA Phone: (734) 769-8010 Telex: 753215 NSF INTL FAX: (734) 769-0109 E-mail: infonsf.org Web: http:/www.nsf.org i NSF International Standard/ American National Standard for Drinking Water Treatment Units Drinking

4、water distillation systems Standard Developer NSF International NSF International Board of Directors Designated as an ANSI Standard April 05, 2016 American National Standards Institute ii Prepared by The NSF Joint Committee on Drinking Water Treatment Units Recommended for Adoption by The NSF Counci

5、l of Public Health Consultants Adopted by The NSF Board of Directors May 1989 Revised November 1992 Revised September 1997 Revised September 1999 Addendum, June 2002 Revised February 2004 Revised October 2007 Revised August 2009 Revised February 2012 Revised December 2013 Revised January 2015 Revise

6、d October 2015 Revised November 2016 Published by NSF International P. O. Box 130140, Ann Arbor, Michigan 48113-0140, USA For ordering copies or for making inquiries with regard to this Standard, please refer to the designation “NSF/ANSI 62 2016.” Copyright 2016 NSF International Previous edition 20

7、15, 2014, 2013, 2012, 2009, 2007, 2004, 1999, 1997, 1992, 1989 Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from NSF International. Prin

8、ted in the United States of America. iii Disclaimers1 NSF, in performing its functions in accordance with its objectives, does not assume or undertake to discharge any responsibility of the manufacturer or any other party. The opinions and findings of NSF represent its professional judgment. NSF sha

9、ll not be responsible to anyone for the use of or reliance upon this Standard by anyone. NSF shall not incur any obligation or liability for damages, including consequential damages, arising out of or in connection with the use, interpretation of, or reliance upon this Standard. NSF Standards provid

10、e basic criteria to promote sanitation and protection of the public health. Provisions for mechanical and electrical safety have not been included in this Standard because governmental agencies or other national standards-setting organizations provide safety requirements. Participation in NSF Standa

11、rds development activities by regulatory agency representatives (federal, local, state) shall not constitute their agencys endorsement of NSF or any of its Standards. Preference is given to the use of performance criteria measurable by examination or testing in NSF Standards development when such pe

12、rformance criteria may reasonably be used in lieu of design, materials, or construction criteria. The illustrations, if provided, are intended to assist in understanding their adjacent standard requirements. However, the illustrations may not include all requirements for a specific product or unit,

13、nor do they show the only method of fabricating such arrangements. Such partial drawings shall not be used to justify improper or incomplete design and construction. Unless otherwise referenced, the annexes are not considered an integral part of NSF Standards. The annexes are provided as general gui

14、delines to the manufacturer, regulatory agency, user, or certifying organization.1 The information contained in this Disclaimer is not part of this American National Standard (ANS) and has not been processed in accordance with ANSIs requirements for an ANS. Therefore, this Disclaimer may contain mat

15、erial that has not been subjected to public review of a consensus process. In addition, it does not contain requirements necessary for conformance to the Standard. This page is intentionally left blank.v Contents 1 General . 1 1.1 Scope . 1 1.2 Minimum requirements. 1 1.3 Chemical and microbiologica

16、l reduction performance claims 1 1.4 Treatment train . 1 1.5 Reviews and revisions . 1 2 Normative references . 2 3 Definitions . 2 4 Materials . 2 4.1 Materials in contact with drinking water . 2 4.2 Materials evaluation . 3 4.3 Gas chromatography/mass spectroscopy (GC/MS) analysis 5 5 Structural p

17、erformance . 14 5.1 Structural integrity 14 6 Minimum performance requirements 19 6.1 Total dissolved solids (TDS) reduction 19 6.2 Performance indication 23 6.3 Flow control 27 6.4 Storage tanks . 27 6.5 Evaporator chamber . 27 6.6 Openings and rims (product water zone) . 27 6.7 Entry ports 27 6.8

18、Waste connections . 27 6.9 Product water dispensing outlets . 27 6.10 Active agents and additives . 28 7 Elective performance claims test methods 28 7.1 Inorganic chemical reduction claims qualified by TDS surrogate testing 28 7.2 Inorganic chemical reduction . 28 7.3 In-place sanitization of the pr

19、oduct water zone . 32 7.4 Microbiological reduction 34 7.5 Production rate verification 36 8 Instruction and information . 38 8.1 Installation, operation, and maintenance instructions 38 8.2 Data plate . 39 8.3 Replacement components . 39 8.4 Performance data sheet . 40 Annex A . A1 Annex B . B1 Ann

20、ex C .C1 Annex D .D1 This page is intentionally left blank.vii Foreword2 The purpose of this Standard is to establish minimum requirements for the materials, design and construction, and performance of point-of-use and point-of-entry drinking water distillation systems that are designed to reduce sp

21、ecific chemical and microbiological contaminants in public or private water supplies. NSF/ANSI 62 also specifies minimum product literature requirements that manufacturers must provide to authorized representatives and consumers. Water contact materials in drinking water treatment units listed under

22、 NSF/ANSI 42, 44, 53, 55, 58, and 62 are tested and evaluated under a separate protocol from NSF/ANSI 61, with criteria that were developed specifically for the intended end-use. NSF/ANSI 61 listing should not be additionally required for acceptance of these listed units for water contact applicatio

23、n. This edition of the Standard contains the following revisions: Issue 28 The total maximum effluent requirement for chromium (hexavalent and trivalent) under Table 7.1 (previously Table 8) was revised to be consistent with the requirements of the other Drinking Water Treatment Unit standards. Issu

24、e 30 CAS numbers were added to Table 4.1 (previously Table 1) of the materials evaluation criteria. Issue 31 This revision added language to state that systems be conditioned using the test water with the specified contaminant for chemical reduction claims under section 7. The tables in this edition

25、 have also been changed to reflect the appropriate section in which it is located: Previous edition of NSF/ANSI 62 Current edition of NSF/ANSI 62 Table 1 Table 4.1 Table 2 Table 4.2 Table 3 Table 4.3 Table 4 Table 4.4 Table 5 Table 5.1 Table 6 Table 6.1 Table 7 Table 6.2 Table 8 Table 7.1 Table 9 Ta

26、ble 7.2 Table 10 Table 8.1 Table 11 Table 8.2 Table 12 Table 8.3 Suggestions for improvement of this Standard are welcome. This Standard is maintained on a Continuous Maintenance schedule and can be opened for comment at any time. Comments should be sent to Chair, Joint Committee on Drinking Water T

27、reatment Units at standardsnsf.org, c/o NSF International, Standards Department, P.O. Box 130140, Ann Arbor, Michigan 48113-0140, USA. 2 The information contained in this Foreword is not part of this American National Standard (ANS) and has not been processed in accordance with ANSIs requirements fo

28、r an ANS. Therefore, this Foreword may contain material that has not been subjected to public review of a consensus process. In addition, it does not contain requirements necessary for conformance to the Standard. This page is intentionally left blank.1 2016 NSF NSF/ANSI 62 2016 NSF/ANSI Standard fo

29、r Drinking Water Treatment Units Drinking water distillation systems 1 General 1.1 Scope This standard establishes minimum materials, design and construction, and performance requirements for point-of-use and point-of-entry drinking water distillation systems and the components used in these systems

30、. Distillation systems covered by this standard are designed to reduce specific chemical contaminants from potable drinking water supplies. Systems covered under this standard may also be designed to reduce microbiological contaminants, including bacteria, viruses, and cysts, from potable drinking w

31、ater supplies. It is recognized that a system may be effective in controlling one or more of these contaminants, but systems are not required to control all. Systems covered by this standard are not intended for the treatment of water that is visually contaminated (turbid) or has an obvious contamin

32、ation source, such as raw sewage, nor are systems covered by this standard intended to convert wastewater to microbiologically potable water. 1.2 Minimum requirements A system as defined in this standard shall meet the applicable requirements of Sections 4, 5, 6, and 8. A component as defined in thi

33、s standard shall meet the requirements of 4 and 8. If the component is pressure bearing, it shall also meet the applicable requirements of 5. 1.3 Chemical and microbiological reduction performance claims 1.3.1 All NSF/ANSI 62 performance claims shall be verified and substantiated by test data genera

34、ted under the requirements of NSF/ANSI 62. 1.3.2 When performance claims are made for substances not specifically addressed in the scope of this Standard or for those substances not specifically addressed but falling under the scope of NSF/ANSI 62, those claims not specifically addressed in the Stan

35、dard shall be so identified. 1.4 Treatment train A system that contains multiple, sequential treatment technologies for a performance claim under this Standard shall meet the applicable requirements as described in Annex D. 1.5 Reviews and revisions This Standard shall be reviewed at least every fiv

36、e years. The review is to be conducted by the NSF Joint Committee on Drinking Water Treatment Units. 2016 NSF NSF/ANSI 62 2016 2 2 Normative references The following documents contain requirements which, by reference in this text, constitute requirements of this standard. At the time of publication,

37、 the indicated editions were valid. All standards are subject to revision and parties are encouraged to investigate the possibility of applying the recent editions of the standards indicated below. The most recent published edition of the document shall be used for undated references. NSF/ANSI 61 Dr

38、inking water system components Health effects APHA, Standard Methods for the Examination of Water and Wastewater, twentieth edition, 19983 USEPA600/4-79-020, Methods for the Chemical Analysis of Water and Wastes, March 19834 USEPA-600-4-84-053, Methods for Organic Chemical Analysis of Municipal and

39、Industrial Wastewater, June 19844 USEPA600/4-88/039, Methods for the Determination of Organic Compounds in Drinking Water, December 19884 USEPA-600/4-90/020, Methods for the Determination of Organic Compounds in Drinking Water -Supplement 1, July 19904 USEPA600/4-91/010, Methods for the Determinatio

40、n of Metals in Environmental Samples, June 19914 USEPA National Primary Drinking Water Regulations, 40 CFR Part 1415US EPA National Secondary Drinking Water Regulations, 40 CFR Part 1435 USEPA National Secondary Drinking Water Regulations, 56 CFR Part 35735 US FDA Code of Federal Regulations, Title

41、21, (Food and Drugs) Direct Food Additive Substances Parts 170 through 199, April 1, 19926 3 Definitions Terms used in this Standard that have a specific technical meaning are defined in NSF/ANSI 330. 4 Materials 4.1 Materials in contact with drinking water 4.1.1 POE drinking water treatment units s

42、hall conform to the protocol and criteria in NSF/ANSI 61. 4.1.2 POU drinking water treatment units shall conform to the protocol and criteria in this section. 3 American Public Health Association (APHA), 1015 Fifteenth Street, NW, Washington, DC 20005 . 4 US Environmental Protection Agency (USEPA),

43、Environmental Monitoring and Support Laboratory, Cincinnati, OH 45268 . 5 Superintendent of Documents, US Government Printing Office, Washington, DC 20402 . 6 US Food and Drug Administration (US FDA), 5600 Fishers Lane, Rockville, MD 20857 . 2016 NSF NSF/ANSI 62 2016 3 4.1.3 Acceptance criteria 4.1.

44、3.1 Materials in contact with drinking water shall not impart levels of target compounds or Tentatively Identified Compounds (TICs) that exceed the Total Allowable Concentration (TAC), Maximum Contaminant Levels (MCL), or Maximum Acceptable Concentration (MAC) criteria specified in Tables 4.1, 4.2 a

45、nd 4.3 or specified in NSF/ANSI 61 Annex D and E. Any extractable contaminants not listed in the referenced tables shall be reviewed and shall not exceed criteria developed in accordance with NSF/ANSI 61 Annex A. 4.1.3.2 TIC identification and quantitation shall be conducted in accordance with secti

46、on 4.3.1.2. Additional TIC identification and quantitation should be verified using a standard of the compound in question or an alternate approved analytical method. Additional TIC identification and quantitation is recommended when the contaminant is a health risk or when the “Probability Based Ma

47、tching” process in section 4.3.1.2 is inconclusive. When possible, the product manufacturer should assist and support the testing laboratory in the identification of a standard for the compound and an appropriate analytical method, if applicable, so that confirmatory identification and quantificatio

48、n can be performed. If a standard and an adequate alternative analytical method are not available to verify the identification and quantitation of the compound, the TIC shall be evaluated according to section 4.3.1.2. NOTE Manufacturers may not be privy to formulation information, so they may not be

49、 able to assist a testing laboratory to identify a standard for the compound that extracted. Refer to Section 4.3.1.2 when the manufacturer does not have material formulation information. 4.1.3.3 Unknown contaminants detected by GC/MS analysis for which identification is unable to be made after performing the steps in 4.3.1 shall be reported in accordance to 4.1.4.2. 4.1.3.4 The concentration of active agents or additives used in the drinking water treatment process shall be evaluated in the product water as specified in 6.11. The concentration of active a