Kahulugan at Layunin

4.1 The deterioration of insulation coating is closely related to its moisture content. Water permeability testing provides a means of monitoring the passage of water through a coating material by its change in dielectric constant. When expressed in time, the test data will reflect the rate of deterioration of the coating material properties and will be correlated with its expected service life as an insulating coating. Water penetration testing will also provide information that will help determine a better coating thickness for a given material.

ASTM G9-07-2020 Standard Test Method for Water Permeability of Pipe Coatings

Saklaw ng

1.1 This method consists of determining the apparent depth rate of water penetration into the insulating coating applied to the pipe.

1.2 Values expressed in SI units are treated as standards. Ang mga halaga na ibinigay sa mga panaklong ay para sa sanggunian lamang.

1.3 Ang pamantayang ito ay hindi nilayon upang matugunan ang lahat ng mga isyu sa kaligtasan, kung meron man, na nauugnay sa paggamit nito. Responsibilidad ng mga gumagamit ng pamantayang ito na magtatag ng angkop na kaligtasan, mga kasanayan sa kalusugan at kapaligiran at upang matukoy ang pagiging angkop ng mga paghihigpit sa regulasyon bago gamitin.

ASTM G9-07-2020 Standard Test Method for Water Permeability of Pipe Coatings

1.4 This international Standard has been developed in accordance with the internationally accepted standardization principles established in the decisions of the Committee on Technical Barriers to Trade (TBT) of the World Trade Organization on the Formulation of International standards, guidelines and recommended principles.