Reliability
Valmet puts safety before anything else in our daily operations. We're also committed to supporting you in reaching your safety targets.
We provide reliability services that keep your equipment and processes running smoothly. We make sure that spare parts and components are easily available with minimal inventory costs. Reliable deliveries ensure that material is managed efficiently at your site every day.
Our maintenance and shutdown management services help you to keep your production assets in good working condition, minimizing downtime and controlling maintenance costs. We offer services for planning and implementing annual shutdowns to avoid cost and schedule overruns.
Reliability
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Field Report - Improving rope runs, a case study
In this case study, two paper machines were rebuilt to improve their rope runs. The rope systems were made much more reliable by making a minimum of changes. Valmet changed the transfer philosophy from tear-off to tail-release. The results were less fouling of return runs and less debris.
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Field Report - Troubleshooting rope runs
Rope runs can be complex, and a poorly designed run can decrease machine complexity. They should be assessed periodically to find and correct problem areas.
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Field Report - Suction roll bearing vibration, a case study
At a North American mill, analysis of unusually high vibration levels from a suction roll back internal bearing point to a recent speed increase.
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Field Report - Suction roll bearing maintenance tips
One of the most sensitive components of the roll, the internal bearing is difficult to maintain and unforgiving when it fails. Accelerometers are an effective means of monitoring and predicting suction roll bearing failure.
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Field Report - Optimizing drying efficiency
Increased felt tension can optimize drying efficiency and improve paper quality. However, a thorough evaluation of machinery and close monitoring of felt tension, along with a complete maintenance program, are the keys to a headache-free dryer section.
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Field Report - Press diaphragm causes work stoppage, a case study
A chronic press load/unload diaphragm rupturing problem crippled the operation of the press at a mill. Plate and diaphragm misalignment were only part of the problem. Further analysis pointed to nipping roll diameter changes and incorrect diaphragm specifications.
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Field Report - Yankee creping problems and regrinds, a case study
In this case study, creping problems on a Yankee correlated with frequent regrinds. Analysis by the OEM specialist discovered misalignment, and made procedural recommendations to resolve the problems.
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Field Report - Yankee dryer operation and maintenance
The Yankee dryer is one of the most essential parts of the tissue machine. This pressure vessel serves as a base for creping, pressing and drying of the paper sheet. Condition and performance of the Yankee should be monitored regularly.
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Field Report - Troubleshooting headbox corrosion, a case study
Imperfections in a headbox's finish interfere with fiber flow through its chambers, resulting in sheet uniformity problems and a poor end product. A process and condition test can identify problems caused by corrosion, fiber orientation and machine limitations.
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Field Report - Avoiding workplace injuries
Most workplace injuries (almost 60%) are the result of common, everyday missteps such as overexertion and slips/trips/falls - not from violent events, crashes or exposure to harmful substances.