Sub Atmospheric Pressure Liquid Leakage Test

In subatmospheric pressure fluid leakage tests in the medical field, the following three standards developed by the International Organization for Standardization (ISO) are taken into consideration:

• ISO 80369-6 Small diameter connectors for liquids and gases in healthcare applications - Part 6: Connectors for neuraxial applications
• ISO 80369-7 Small diameter connectors for liquids and gases in healthcare applications - Part 7: Connectors for intravenous or subcutaneous applications
• ISO 80369-20 Small diameter connectors for liquids and gases in healthcare applications - Part 20: Common test methods

These standards are part of a set of standards developed to prevent misconnection between small diameter connectors used in different healthcare applications. The ISO 80369-20 standard includes test methods. ISO 80369-6 and ISO 80369-7 standards describe performance requirements for small diameter connectors. These two standards require small diameter connectors to be evaluated for subatmospheric compressed air leakage.

The required subatmospheric pressure requires that the pressure applied to the sample be 80 kPa to 88 kPa below the ambient atmospheric pressure. This requirement poses a potential difficulty in implementing the standard.

Apart from that, it is very important to study subatmospheric pressure patterns in discharge pipeline systems. Because these processes cause collapses depending on the installation conditions such as underground pipe lining height, type, filling and pipeline hardness class. The behavior of the air pocket within a pipeline during these conditions is of paramount importance to the behavior and impact on the safety of the hydraulic system. Pipeline studies are more focused on filling than unloading.

The formation of sub-atmospheric pressure troughs can cause serious damage. Therefore, the process of discharging from water pipelines should be evaluated further. The evacuation process causes problems in the sub-atmospheric pressure molds pipelines due to its characteristics such as coating depth, pipeline hardness and backfill type, especially when no air is taken during discharge.

Our organization, among the numerous test, measurement, analysis and evaluation studies it provides for businesses in various sectors, also provides sub-atmospheric pressure liquid leak test services with its trained and expert staff and advanced technological equipment.