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A Canadian city: Valmet TS troubleshooting leads to polymer and maintenance savings

A Canadian city with a population of about 95,000 operates an 80 million liter/day capacity wastewater treatment plant which discharges clean and UV sterilized water to the local river.

Enforcing new sustainability requirements

In 2015, Valmet communicated its Sustainable Supply Chain policy and the requirements set therein to all its active, around 9,000 suppliers globally.

Saturated steam enthalpy table, steam mechanism, optimizing tips

At the end of this article is a typical enthalpy table for saturated steam. You can use this type of chart to determine what the temperature is inside a dryer can at a given pressure. We also provide some tips for sizing lines, measuring temperature and monitoring condensate pressure.

Winding principles part 1 - TNT overview, effect of web tension

This article is the first in a short series which will explain how web tension, rider roll pressure, and drum torque ratio affect roll quality. Illustrations of key components and control principles will be presented. The series starts with an overview and discussion of web tension.

Steam & condensate 1 - overview, glossary and water evaporation

In this first in a two part series, We explain the terminology and working principles of a typical S&C system and how it controls steam pressure for optimum drying over the entire operating range.

Hydraulic controls improve performance, reliability - case study

In this case study, Valmet helped a northern USA mill upgrade its hydraulic controls to remove obsolescence, while also improving runnability and reliability.

SAFETY BULLETIN: Precautions to take before refiner maintenance

Valmet has learned of a catastrophic failure of a Valmet Disk Refiner. Excess pressure was used trying to unplug an inlet pipe. No injuries, but much damage.

Example equipment update analysis - rebuild/replace/add a winder?

When examining an older piece of equipment that does not meet today’s performance requirements, a mill must determine if it should be rebuilt or replaced.

Improving reel turnups for low downtime and high paper yield

The reel turnup process must be perfect in order to maintain high quality end product and avoid downtime. Successful turnups share key aspects, while others may benefit from a technology upgrade.

SymSizer/OptiSizer beam setup, after applicator roll change

SymSizer or OptiSizer beam setup is required after every applicator roll change or whenever you feel there is an issue with starch/coating application. The goal is to set the applicator beam parallel with the new applicator roll.