1. Scope 1.1This test method covers the determination of the concentration of pinholes in a moisture barrier film or coating that is applied to the interior surface of metal jacketing. 1.2Since this method relies on the completion through the metal jacketing of an electrical circuit, this method is only applicable to jacketing that is electrically conductive and has a moisture barrier applied which is not electrically conductive. 1.3The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.4This 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.
This test method currently exists in the C1729 material standard for aluminum jacketing. It is desirable to remove this embedded test method and make a stand-alone method. This is used by manufacturers and specifiers of metal jacketing as one measure of the quality and desirability of the moisture barrier which is applied to metal jacketing to help prevent corrosion on the interior surface of the jacketing.
Keywordspinhole; holiday; jacket; jacketing; cladding; lagging; moisture barrier; moisture retarder; thermal insulation
The title and scope are in draft form and are under development within this ASTM Committee.Back to Top
James Young, Jr.
Withdrawn From Balloting
Ballot Item Approved as C1785-2013 and Pending Publication