ASME PTC 31-2011 [Revision of ASME PTC 31-1973 (R1991)] High-Purity Water Treatment Systems Performance Test Codes AN AMERICAN NATIONAL STANDARD
ASME PTC 31-2011 [Revision of ASME PTC 31-1973 (R1991)] High-Purity Water Treatment Systems Performance Test Codes AN AMERICAN NATIONAL STANDARD Three Park Avenue New York, NY 10016 USA
Date of Issuance: April 9, 2012 This Code will be revised when the Society approves the issuance of a new edition. There will be no addenda issued to PTC 31-2011. ASME issues written replies to inquiries concerning interpretations of technical aspects of this Code. Periodically certain actions of the ASME PTC Committee may be published as Code Cases. Code Cases and interpretations are published on the ASME Web site under the Committee Pages at http://cstools.asme.org/ as they are issued. Errata to codes and standards may be posted on the ASME Web site under the Committee Pages to provide corrections to incorrectly published items, or to correct typographical or grammatical errors in codes and standards. Such errata shall be used on the date posted. The Committee Pages can be found at http://cstools.asme.org/. There is an option available to automatically receive an e-mail notification when errata are posted to a particular code or standard. This option can be found on the appropriate Committee Page after selecting Errata in the Publication Information section. ASME is the registered trademark of The American Society of Mechanical Engineers. This code or standard was developed under procedures accredited as meeting the criteria for American National Standards. The Standards Committee that approved the code or standard was balanced to assure that individuals from competent and concerned interests have had an opportunity to participate. The proposed code or standard was made available for public review and comment that provides an opportunity for additional public input from industry, academia, regulatory agencies, and the public-at-large. ASME does not approve, rate, or endorse any item, construction, proprietary device, or activity. ASME does not take any position with respect to the validity of any patent rights asserted in connection with any items mentioned in this document, and does not undertake to insure anyone utilizing a standard against liability for infringement of any applicable letters patent, nor assumes any such liability. Users of a code or standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, is entirely their own responsibility. Participation by federal agency representative(s) or person(s) affiliated with industry is not to be interpreted as government or industry endorsement of this code or standard. ASME accepts responsibility for only those interpretations of this document issued in accordance with the established ASME procedures and policies, which precludes the issuance of interpretations by individuals. No part of this document may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior written permission of the publisher. The American Society of Mechanical Engineers Three Park Avenue, New York, NY 10016-5990 Copyright 2012 by THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS All rights reserved Printed in U.S.A.
CONTENTS Notice... Foreword... Committee Roster... Correspondence With the PTC Committee... v vi vii viii Section 1 Object and Scope... 1 1-1 Object... 1 1-2 Scope... 1 1-3 Test Uncertainties... 2 Section 2 Description and Definition of Terms Ion Exchange... 3 2-1 Definitions... 3 2-2 References... 10 Section 3 Guiding Principles... 12 3-1 Advance Planning for Test... 12 3-2 General Description of Test Requirements... 12 3-3 Preliminary Tests... 12 3-4 Frequency of Observations... 13 3-5 Duration of Test Runs... 13 3-6 General Description of Test Procedures... 13 3-7 Membranes Testing... 15 3-8 Reverse Osmosis (RO) Operating Performance... 19 3-9 Membrane Plant Performance Normalization... 21 Section 4 Instruments and Methods of Measurement... 24 4-1 Instruments and Methods of Measurement... 24 4-2 Mechanical Measurements... 24 4-3 Flowmeter Absence... 24 4-4 Temperature Measurement... 24 4-5 Loss of Pressure Measurement... 24 4-6 Pressure Loss Across a Single Unit/Array or Train of Multiple Units/Arrays Measurement... 25 4-7 Pressure Loss Indication Across a Resin Bed Measurement... 25 4-8 Chemical Measurements... 25 4-9 Sampling of Water From Influent and Effluent of Water Treatment Equipment... 25 4-10 Field Sampling of Media... 26 4-11 Field Measurement of Resin Volume... 26 4-12 Analysis of Ion Exchange Materials... 26 4-13 Sampling for Suspended Solids... 26 4-14 Ion Exchange Operating Capacity... 27 Section 5 Interpretation of Results... 29 5-1 Introduction... 29 5-2 Performance Benchmark... 32 5-3 Calculations and Analytical Procedures... 32 5-4 Expression of Specified Performance and Results of Tests... 32 Section 6 Report of Tests... 33 6-1 Report of Tests... 33 iii
Tables 3-6.1.4-1 Resin Volume Change Chemical Form-to-Form... 14 3-6.3-1 Ion Exchange System Performance Testing... 16 3-6.4-1 Chemical Measurements During Ion Exchange System Performance Testing... 17 3-8.2-1 K-Factor for Reverse Osmosis Calculations... 20 3-8.2-2 SDI Indices... 20 4-13-1 Purge Times Required for Representative Sampling... 27 5-1.1.1-1 Typical Operating Flow Rates Specifications... 30 5-1.1.1-2 Typical System Flux Rates... 30 Mandatory Appendices I Regenerant Purity Requirements for Ion Exchange Materials... 35 II Suspended Iron Oxide Solids: Membrane Comparison Charts... 38 Nonmandatory Appendices A Sample Calculations... 40 B Causes of Operating Capacity Reduction... 46 C Selectivity of Resins... 47 iv