Maximising the Lifespan and Safety of Steam Hoses

By following best practices, businesses can prevent common issues such as superheated steam damage, ‘popcorning’ (a phenomenon where the inner wall of the hose absorbs water or water vapour), and leaks, thereby safeguarding both equipment and personnel.

Understanding Steam and Its Impact on Hoses

Understanding the different states of steam and their impact on hoses is fundamental to effective management. Steam exists in three states: wet saturated, dry saturated, and superheated.

Wet saturated steam can have a lubricating effect on hose inner walls but may lead to wear over time.

Dry saturated steam, without liquid water particles, can be harsh on hose materials if not managed properly, potentially causing brittleness and cracks.

The most critical form is superheated steam, heated beyond its boiling point without increased pressure. This extremely dry state can continue the vulcanisation process of the hose’s rubber inner wall, leading to hardening and reduced flexibility.
 

Best Practices to Avoid Hose Damage

To mitigate these risks, it’s essential to monitor operating pressure and temperature carefully, ensuring they don’t exceed the hose’s recommended limits. Proper management and maintenance are crucial for extending steam hose service life.

This includes preventing superheated steam damage and prevent popcorning, for which it’s crucial to blow the hose dry after each use and ensure complete dryness before storage. Using hoses with extruded inner walls can further mitigate this risk.
 

Ensuring Structural Integrity and Safety

Maintaining hose integrity is paramount for a secure industrial environment. The use of galvanised steel inlays is recommended to prevent internal rusting and weakening. Steam hoses should be clearly marked as outlined in the EN ISO 6134-2A standard, including producer name, compliance standard, maximum operating pressure, and maximum permissible temperature.

A red stripe along the hose length aids in easy identification, while a spiral colour stripe with clear, printed text improves recognition in hard-to-reach areas.

Preventing Steam Leaks

Preventing steam leaks is crucial for operational efficiency and personnel safety.

Proper Hose Installation and Regular Inspections

Correct installation and routine checks are vital for hose longevity and safety. Proper installation should ensure no sharp kinks, tension, or torsional stress. Fittings and connections should be checked at operating pressure, gradually increasing to detect any leaks.

Regular inspections are essential, and any issues should be addressed immediately. Professional inspections are advisable to detect internal damage that may be difficult to spot visually. ISO 6134 guidelines recommend performing pressure tests every six months.

For additional support, businesses can consider utilising professional services such as ERIKS’ service exchange program. This comprehensive program offers maintenance and testing for steam hoses, including external visual inspections and endoscopic inspections for superheated steam or other aggressive media.

By implementing these best practices and leveraging expert support, businesses can maximise the lifespan of their steam hoses while maintaining a safe and efficient industrial environment.

Regular maintenance, proper installation, and adherence to safety standards are key to preventing common issues and ensuring the longevity of steam hoses.
 

For more information on Hose solutions or to get in touch with one of our ERIKS Fluid Power, Transfer and Control Specialists please contact your local ERIKS Service Centre, who will be happy to discuss your options.

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