Periodic maintenance and inspection of steam hoses
All rubber steam hoses wear out over time. Therefore, continuous control is of primary importance. The operator must regularly check if deterioration is not so severe as to prevent further safe use.
The operator must pay special attention to:
- rubber lumps or blisters
- cracks that expose the braid
- leakage of steam near the fittings or in any other spot along the hose
- flattening or kinks that may cause hose damage
- decrease in steam flow rates indicating swelling of internal layer
If any of the above occurs, the hose must be shut down from service immediately. This hose must be thoroughly inspected prior to further use. The hoses are usually damaged near the fitting, where they are exposed to excessive bending and deformation. If such damage occurs, cut off the hose fitting and mount it once again. The hoses continuously used at high temperature and pressure should be periodically inspected to check if the internal layer hardens. In most cases, removing the fittings to perform the inspection is necessary.