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Description of ASTM-D3923 2008ASTM D3923 - 08Standard Practices for Detecting Leaks in Reverse Osmosis and Nanofiltration DevicesActive Standard ASTM D3923 | Developed by Subcommittee: D19.08 Book of Standards Volume: 11.02 ASTM D3923Significance and Use These practices may be used to determine whether a RO or NF device is free of leaks if the mechanical integrity of the device is to be confirmed. They may also be used to detect leaks in RO or NF devices whose operating performance indicates a possible leak. These practices may be used for either new or used devices. 1. Scope 1.1 These practices cover detecting leaks in which there is a direct communication between the feed or concentrate, or both, and the permeate. Several types of leaks are possible with the various configurations of reverse-osmosis (RO) and nanofiltration (NF) devices. 1.2 Types of Leaks : 1.2.1 With hollow-fiber devices, feed or concentrate leakage, or both, into the permeate stream by leaks through the tube sheet and past the tube sheet O-ring are possible. Leaks caused by broken fibers are not covered by these practices. 1.2.2 With spiral-wound devices, leaks may occur through damage of the membrane surface itself by punctures or scratches, by glue-line failure, and by O-ring leaks on product tube interconnectors. 1.2.3 With tubular devices, leaks due to membrane damage, tube end seal leaks, and leaks from broken tubes or product headers are possible. 1.3 Three leak test practices are given as follows:
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use .
ASTM Standards D1129 Terminology Relating to Water D1193 Specification for Reagent Water D4194 Test Methods for Operating Characteristics of Reverse Osmosis and Nanofiltration Devices D6161 Terminology Used for Microfiltration, Ultrafiltration, Nanofiltration and Reverse Osmosis Membrane Processes D6908 Practice for Integrity Testing of Water Filtration Membrane Systems E60 Practice for Analysis of Metals, Ores, and Related Materials by Spectrophotometry E275 Practice for Describing and Measuring Performance of Ultraviolet and Visible Spectrophotometers Keywords dye test; leaks; nanofiltration; O-ring test; reverse osmosis; tubesheet leak test; vacuum test; Dye leak test; Leak testing; O-rings; Reverse osmosis (RO) installations; Spider test; Tube sheet leak test; Vacuum leak test; ICS Code ICS Number Code 71.120.99 (Other equipment for the chemical industry) DOI: 10.1520/D3923-08 ASTM International is a member of CrossRef. ASTM D3923The following editions for this book are also available...This book also exists in the following packages...Subscription InformationMADCAD.com ASTM Standards subscriptions are annual and access is unlimited concurrency based (number of people that can access the subscription at any given time) from single office location. For pricing on multiple office location ASTM Standards Subscriptions, please contact us at info@madcad.com or +1 800.798.9296.
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About ASTMASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide. |
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