Semnificație și utilizare
4.1 The deterioration of insulation film is closely related to its moisture content. The water permeability test provides a way to monitor the passage of water through the coating material by changes in the dielectric constant of the coating material. When expressed in time, the test data will reflect the rate of deterioration of the coating material properties and will correlate with its expected service life as an insulating coating. The water penetration test 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
gamă
1.1 This method includes determining the apparent depth rate of water penetration into the insulating coating applied to piping.
1.2 Values expressed in SI units are considered standard. Valorile date în paranteze sunt doar pentru referință.
1.3 Acest standard nu este destinat să se adreseze tuturor, dacă există, probleme de siguranță asociate cu utilizarea acestuia. Este responsabilitatea utilizatorilor acestui standard să stabilească siguranța corespunzătoare, practicile de sănătate și de mediu și pentru a determina aplicabilitatea restricțiilor de reglementare înainte de utilizare.
1.4 This international standard is based on internationally recognized standardization principles established in the Decision on International Standards, Guidelines and Recommended Principles issued by the WTO Technical Barriers to Trade (TBT) Committee.