ASTM International - ASTM D3923-94(2003)e1

Standard Practices for Detecting Leaks in Reverse Osmosis Devices

historical
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Organization: ASTM International
Publication Date: 10 June 2003
Status: historical
Page Count: 3
ICS Code (Other equipment for the chemical industry): 71.120.99
significance And Use:

These practices may be used to determine whether a reverse-osmosis 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... View More

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 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:

Sections
Practice A-Tube Sheet and O-Ring Leak Test for Hollow Fiber Devices6 to 9
Practice B-Vacuum Test for Spiral Wound Devices10 to 12
Practice C-Dye Test for Spiral Wound and Tubular Devices13 to 18

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.

Document History

January 1, 2014
Standard Practices for Detecting Leaks in Reverse Osmosis and Nanofiltration Devices
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...
October 1, 2008
Standard Practices for Detecting Leaks in Reverse Osmosis and Nanofiltration Devices
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...
ASTM D3923-94(2003)e1
June 10, 2003
Standard Practices for Detecting Leaks in Reverse Osmosis Devices
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...
December 10, 1998
Standard Practices for Detecting Leaks in Reverse Osmosis Devices
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...
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