Short answer: at least every 6 years. Click here to buy
Adhering to guidelines set forth by DIN 20066 and ISO/TR 17165-2, we aim to ensure the safety, performance, and longevity of your hose assemblies. A bad hose leads to SF6 gas emissions, gas contaminations, loss of efficiency, and major safety concerns. By implementing best practices for hose storage and replacement, you can optimize efficiency while minimizing risks. Let’s explore further!
1. Understanding Age Control and Shelf Life:
Age control is crucial to ensure that SF6 gas service hoses are used before their shelf life expires. The shelf life refers to the period during which the hose retains its full capabilities for the intended service. Proper storage and adherence to manufacturing dates are essential factors in age control and first-in, first-out (FIFO) usage.
2. DIN 20066 and ISO/TR 17165-2 Guidelines:
In German-speaking countries, the DIN 20066:2002-10 standard, referred to by trade associations, provides specific recommendations for hose assemblies. According to DIN 20066, the production hose (bulk hose) should be younger than 4 years from the date of manufacture. The overall service life, including storage, should not exceed 6 years, with a storage period not exceeding 2 of those 6 years.
3. Visual Inspection and Pressure Testing:
Regardless of the storage period, it is crucial to conduct a visual inspection before using stored hoses. If any doubts arise regarding functionality (e.g., cracks, rust, or other damage), pressure testing should be carried out before deployment. In cases where doubts persist or significant damage is present, it is recommended to dispose of the hose to ensure safety.
4. Best Practices for Hose Storage:
Proper hose storage is essential to maintain hose integrity and functionality. Here are some best practices to follow:
- Clean, Cool, and Dry Environment: Store hoses in a clean, cool, and dry area, preferably at room temperature, to prevent degradation.
- Protection from Sunlight and Moisture: Avoid direct exposure to sunlight and moisture, as they can degrade the hose material over time.
- Keep Away from High-Powered Electrical Equipment: Store hoses away from high-powered electrical equipment to minimize the risk of electrical damage.
- Avoid Corrosive Chemicals: Prevent contact between hoses and corrosive chemicals, as they can deteriorate hose materials.
- Shield from Ultraviolet Light: Protect hoses from ultraviolet (UV) light exposure, as it can accelerate degradation.
- Guard Against Insects/Rodents: Take precautions to prevent infestations by insects or rodents, which can cause damage to stored hoses.
- Separate from Radioactive Materials: Store hoses separately from radioactive materials to avoid any potential contamination or interference.
5. Safety First:
Always consider hose assemblies as safety-relevant components. In case of doubt, prioritize safety by conducting thorough inspections, pressure testing, or disposing of hoses that show signs of damage or degradation.