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Good practices from South America in HSE performance

Taking care of health, safety and environment (HSE) to prevent injuries and other incidents is essential to the success of customer delivery projects.

Valmet reviews its sustainability agenda: participate in the survey

Valmet’s sustainability agenda was initially defined in 2014 and its action plans are renewed every three years. This year the whole sustainability agenda will be updated with detailed action plans for 2022-2024.

Winders require a consistent preventive maintenance program (PMP)

Sheet breaks at the winder can bring the entire papermaking process to a stop. To prevent this, the winder needs constant attention through a sound preventive maintenance program (PMP).

Stainless steel care, cleaning, surface prep and passivating

Stainless steel is corrosion resistant and maintains a film of chrome oxide over its surface. Under normal conditions this film is self-healing.

Optimize operations with a Roll Cover and Maintenance Agreement

Sending rolls to multiple suppliers can be expensive, cause a loss in continuity and create extra burdens for roll management. A roll agreement will help.

Reading fluids circuit diagrams - hydraulic & pneumatic symbols

Reading hydraulic and pneumatic circuit diagrams and being able to make sense out of them is a valuable skill for mill personnel. The first article in this series presents fluid control elements.

Reel backlash due to worn parts causes sheet breaks, case study

Sheet breaks on PM1 are costing thousands of dollars. Valmet emergency service discovers backlash and further analysis provides temporary and long-term fixes.

Troubleshooting roll bouncing addresses the four probable causes

Roll vibration can intensify enough to actually bounce the rolls, causing an unsafe situation at the winder. The most common causes are mechanical hardware, controls, roll structure and paper properties. Thorough troubleshooting is the best recommendation.

Solutions to multiple poly roll cover failures, a case study

After blowing two expensive roll covers, a mill asked Valmet to investigate. After checking roll history, nip impressions and coolant, the culprit was an inexpensive part.

Common hydraulic valves – cartridge counterbalance valves

Counterbalance valves prevent oil from leaving a cylinder that is holding a load. Without them, loads would move uncontrollably if oil pressure is lost.