Considerations for #SGS Testing of Plate Heat Exchanger #Gaskets
SGS (Société Générale de Surveillance) is a renowned international inspection, verification, testing, and certification company. When conducting SGS testing for plate heat exchanger gaskets, several key considerations must be taken into account to ensure the gaskets meet the required standards and specifications. Here are the main points to consider:
1. Material Quality and Composition
Material Verification: Ensure that the gaskets are made from the specified materials, such as #EPDM, #NBR, or other suitable elastomers. The material should be verified for its chemical composition and physical properties.
Compliance with Standards: The materials should comply with relevant international standards, such as #ASTM, #ISO, or other applicable standards.
2. Dimensional Accuracy
Size and Shape: Verify that the gaskets have the correct dimensions and shape as per the design specifications. This includes checking the thickness, width, and overall geometry.
Tolerance Levels: Ensure that the gaskets meet the specified tolerance levels for dimensions to ensure a proper fit and seal.
3. Physical and Mechanical Properties
Tensile Strength: Test the tensile strength of the gaskets to ensure they can withstand the operational stresses.
Elongation at Break: Measure the elongation at break to assess the flexibility and durability of the gaskets.
Hardness: Check the hardness of the gaskets to ensure they have the appropriate level of rigidity and flexibility.
4. Thermal and Chemical Resistance
Temperature Resistance: Test the gaskets for their ability to withstand the operational temperature range without degrading.
Chemical Compatibility: Ensure that the gaskets are resistant to the chemicals they will be exposed to during operation, such as various fluids and cleaning agents.
5. Leakage and Sealing Performance
Leakage Test: Conduct leakage tests to ensure that the gaskets provide an effective seal and prevent fluid leakage under operational conditions.
Pressure Resistance: Test the gaskets for their ability to withstand the operational pressure without failing.
6. Aging and Durability
Aging Tests: Perform accelerated aging tests to simulate long-term use and assess the durability of the gaskets.
UV and Ozone Resistance: Test the gaskets for resistance to UV radiation and ozone, especially if they will be used in outdoor or harsh environments.
7. Installation and Fitment
Fitment Check: Ensure that the gaskets fit properly within the plate heat exchanger and do not cause misalignment or improper sealing.
Ease of Installation: Verify that the gaskets can be easily installed and removed without damage.