Fluid handling equipment may suffer from multiple problems including physical and mechanical damage as well as general or localized erosion and corrosion. These problems are linked to decreased efficiency and poor performance, leading to increasing operational costs. Minimising performance deterioration is therefore an important factor for pump manufacturers and end users.  Indeed, hydraulic losses account for most of the efficiency decrease (9% for a mixed flow pump to 20% for radial flow). Coating technology can help in decreasing these losses, increasing the pump’s performance and reducing operational costs.

Severe corrosion kept at bay with hard-wearing epoxy material

The pipework at a coal fired power station in the UK was experiencing severe corrosion issues caused by abrasive limestone slurry material. Due to the extent of the damage, the average lifetime of the pipes had been dramatically reduced to less than six months before the pipe spool pieces had to be completely replaced. The station required a repair solution that would provide extremely robust protection against the abrasive material and therefore significantly increase the working life of the equipment.

Leaking oil tanks repaired in-situ with fast-curing epoxy composite

A UK oil supplier was faced with a major dilemma when a transformer oil storage tank began to leak in several places. As the tank was located in a confined space, it would be highly dangerous to repair the damage in-situ using hot work. If the tank was removed and repaired offsite, not only would this incur large amounts of downtime, but the cost of welding alone would be over £15,000.

The reliability of most rotating equipment is almost inevitably linked directly to bearing life, and it is estimated bearing failure is responsible for almost 21% of these equipment failures (Bloch, 2011).  

Research into bearing failures  shows that just over half of these are a result of contamination of the bearing oil (Fig 1). Clearly it is therefore essential to ensure that contamination of the bearing lubricant is minimised and if possible eliminated if optimum bearing life is to be achieved thereby improving the equipment reliability (MTBF).

Swedish paper mill Holmen Paper Hallsta has extensive experience in condition monitoring and has worked closely with SPM for many years. Now the mill is upgrading the monitoring of a number of Nash pumps to a newer online system. (Read More)

The art of measuring low-frequency vibrations

Rotor blades in wind turbines are growing longer – but also slower.

Multimegawatt wind turbines turn even more slowly. This means that reproducible low-frequency vibration monitoring will gain in importance not only for the main rotor but also for the slow-operating gearbox components and roller bearings. Reliably measuring low frequencies, however, can be rather tricky.

Molten sulfur is present in an ever widening range of industries and liquid sulfur storage tanks are used worldwide in crude oil refineries and natural gas plants to store liquid sulfur in very large volumes. Sulfur storage tanks are most commonly utilised as part of the Gas Treating System in sour crude oil refineries and gas sweetening facilities to temporarily store liquid sulfur produced in the sulfur recovery plant. These tanks are usually field erected and most commonly constructed of carbon steel.

Helium has the lowest boiling point of all gases at -269 °C. As a result, liquid helium is frequently used as a cooling medium. This is the case at the Jülich Research Centre (FZJ). “Nowadays we mainly use liquid helium for cooling superconductors in computer tomographs, for example for brain research and biotechnology”, says Ulrich Sieberichs, supervisor in the supply department for cryogenic gases at the FZJ.

At the Renström mine in northern Sweden, Swedish mining company Boliden monitors the mechanical condition of the multi-rope friction hoist using SPM HD and vibration analysis.

In 2012, Boliden tested a number of condition monitoring systems on an autogenous mill at its mine in Garpenberg, Sweden. The tests led to a strategic decision to implement condition monitoring solutions from SPM for mining equipment within Boliden. As a result of this decision, the Intellinova online system was installed on the mine hoist in the Renström mine last year. Mats Johansson, Maintenance Manager, about the investment: "The main hoist is critical equipment (A-rated) for us and the heart of our business. If the hoist malfunctions, production more or less comes to a halt. On this type of equipment, we need good control and that makes online monitoring necessary."

The hoist is a process critical application used in underground mines for transporting materials or personnel. This case study describes the friction hoist application in the Renström mine; currently Sweden’s deepest mine at 1340 m. Using the SPM HD measuring technique and vibration analysis, the online system monitors hoist bearings and gears to ensure around the clock operation and provide automatic alarms.

The combination of vibration and shock pulse technologies is optimal for this type of application. Shock pulse transducers pick up bearing related signals very clearly, yielding crisp and easily interpreted readings, while vibration transducers pick up gear mesh frequencies in the gearbox, unbalance in the drum and other low frequency vibrations.

Find out more here.

Introduction
As a manufacturer of premium glass bottles, Allied Glass creates groundbreaking glass packaging for many world-leading brands of food and drink. With two state of the art factories, located in Leeds and Knottingley, Allied Glass has the capability to manufacture 13 million bottles each week.
From design through to manufacture, the company is committed to the highest production standards and the most stringent quality control procedures, as any defects in the glass can have very serious consequences for the consumer, brand owner and ultimately Allied Glass.
By its very nature, glass container production is challenging; therefore each container must undergo rigorous checks. This means Allied Glass lays great emphasis on automatic inspection and rejection equipment on the shop floor, which ensures that any issues are quickly identified and appropriate improvements made.
It was with this in mind that Allied took the decision to upgrade its factory information system Shopfloor-Online from Lighthouse Systems, to the latest version 4. It was first installed at the Leeds plant before being added to the Knottingley site, with an added complication - Knottingley was adding new lines at the same time.
The software tracks production runs, tracking the product being made and the specifications associated with it; it captures defect data and other quality measurements; and supports end of line audits. When defects are found it identifies the mould and section (the mould is located in a section in the bottle forming Shopfloor-Online Case Study machine) from which the defective bottle originated, and can highlight trends by machine, mould, section or product.
As the software is web-based, reports identifying such trends, and the tracking of potential issues, can be easily made available to production and maintenance teams for speedy resolution.

The Requirement for Change
The manufacturing process for glass bottles is fast and complex, therefore it is a very difficult process to control and improve. Once a bottle is formed, the production team focuses on identifying and removing defective bottles. The ability to quickly and easily spot trends and track issues delivers significant value in terms of process improvement. The 'trending' capability was one of the most important aspects of the Shopfloor-Online system to Allied Glass, as it promised better quality, throughput, and greater customer satisfaction. Richard Johnson, Continuous Improvement Manager for Allied Glass, comments:
"We wanted Shopfloor-Online to help us to improve trending. Removing paperwork from the process is the first step, this is because the software is highly adept at spotting trends or discrepancies in the figures. And, once the measurements from the shop floor are inputted into the system, it is simple to drill down into specific parts of the production process to find out information at any given point. With paper forms, our ability to pinpoint any disparities was arduous and time consuming. The new system gives us drill down capabilities at the press of a button. This not only enables the production team to alert operators to issues, but also helps us to focus resource where it is needed most and, Shopfloor-Online Case Study therefore, drive process improvements."
Integrating with Other Systems
As part of the project, several interfaces have been created to allow data from Allied's ERP (enterprise resource planning) system (PRISM) to be transferred to Shopfloor-Online automatically. This is used to provide better tracking of the production process. Production orders are automatically downloaded onto Shopfloor-Online along with other key data. This improves traceability and facilitates more exact/powerful reports.
The Lighthouse software also collects data directly from the 'Otto' measuring machine, an automated off line measuring device, which uses cameras to capture up to 600 measurements on any specific part of a bottle. The direct collection of data automatically into Shopfloor-Online, makes analysis possible that would have been otherwise impossible. It saves time, and the graphical representation of the data collected makes the identification of discrepancies much easier to see.

Benefits
With the upgrade of Shopfloor-Online, Allied can use the Inspection area data to pinpoint where problems are occurring, to the specific mould or section on the glass bottle making machine. This allows Allied Glass to react rapidly to production issues and to be confident that quality issues are not going unnoticed. This ultimately leads to reducing the impact of faults and the level of rejects, which improves production output and reduces customer complaints.
Richard Johnson continues: "The Lighthouse System makes our production teams more proactive. We use the information in Shopfloor-Online to put focus into specific areas where we see potential issues arising. Simply we are reacting to information and so that we can proactively fix faults. The net results should be two-fold, a reduction in customer complaints, which will strengthen our brand over the longer term."
Shopfloor-Online gives a real-time graphical representation of the equipment, showing the status. This clear visibility of plant performance is extremely valuable as everyone can easily discern what is taking place.
Previously, the creation of reports for management use was time consuming, as the information was held in paper form, which was complicated to cross-reference. Now they are created on demand with little effort and are more incisive and complete.

Looking to the Future
The implementation has been successful in achieving its goals, however Richard Johnson recognises that there is still more the company can achieve with Shopfloor-Online. Spoilage tracking is one area that he hopes to address in the near future. This will mean that all the machines on line are linked directly to the Lighthouse software to count production, spoilage and track machine status data in real time. This will assist Allied Glass in identifying problems at an individual machine level, which will help to prioritise staffing on lines. Also, the ability to schedule maintenance checks will enable Allied Glass to better manage the process and avoid potential problems.

In future, Allied Glass may explore linking its customer complaints database with the production data in Shopfloor-Online, enabling the production teams to cross reference information, aiding a faster and more comprehensive response to customers.
Richard Johnson concludes: "The upgrade to version 4.0 is a significant move for Allied Glass. The Lighthouse team have worked closely with us, delivering the expertise we have needed, whenever necessary. We now actively market the system to our customers, using it as contributing factor to our ability to deliver excellence in glass production. We are still building the system and our operators will continue to challenge it, to make sure that it continues to deliver more functionality and performance. We know we can achieve a lot more with it in time, but it is already proving to be a significant tool in our drive for process improvement."

For further information, please visit www.lighthousesystems.com

 
Lighthouse Systems Limited
Buchan Hill
Pease Pottage
Crawley
West Sussex
RH11 9AP
United Kingdom

Phone: +44 (0) 1293 605300
Fax: +44 (0) 1293 605301

www.lighthousesystems.com

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