Literature

Transcript

    MitchellWest Ltd Literature           An Introduction to Electrical and Mechanical Services             Support for Mission Critical Sites   All Electrical & Mechanical Preventative Services Emergency Lighting & Periodic Testing Generator & UPS (Rotary & Static) Services Battery Impedance Testing Electrical Power Condition & Thermal Surveys Vibration Analysis & Balancing On-site Energy Efficiency Lighting     Unit 13 & 14 Cosford Business Park, Central Park, Lutterworth, Leicestershire, LE17 4QU Tel: 01455 377433 Fax: 0870 706 0885 Email: [email protected] Web: www.mitchellwest.co.uk MitchellWest Ltd Literature CONTENT PAGE Please click on page you wish to view Preventative Maintenance Services 1 Rotary & Static UPS Systems 4 Battery Impedance Testing 7 Energy Efficient Lighting 9 Warehouse lighting 10 Pat Testing 11 Periodic Testing & Emergency Testing 12 Maintenance Services for Backup Systems 13 Bespoke Services 14 Load Testing 18 MitchellWest Ltd Unit 13-14 Cosford business Park, Central Park, Lutterworth, LE17 4QU Website: www.mitchellwest.co.uk Email: [email protected] Telephone: 01455 377433 MitchellWest Ltd Preventative Maintenance Services What are the benefits of carrying out preventative maintenance? Routine maintenance alone cannot detect possible problems that may lead to catastrophic failures, by carrying out preventative maintenance services alongside the routine maintenance visits it allows the site to control when the equipment needs to be powered down for repair works. How does this give my site more control over unscheduled outages? Non-intrusive preventative maintenance services: Power Monitoring – This actively detects possible failures by highlighting problematic areas both on the mains supply and on the equipment end. This offers an insight to the true loading of the building, highlighting unbalanced loading across the phases, power disturbance, harmonics and power consumption, ensuring a healthy and stable power supply for both the mains supply and backup system(s) whilst also making sure the site does not exceed the capabilities of its back up supply equipment. THD Current should be less than 8% to comply w ith G5/4 BSEN 50160 average distortion is running at 19% peaking as load increases 5th Harmonic Voltage outside of 4% limit set out in BS EN 50160 G5/4 is the main cause of this is unfiltered high frequency light ing Thermal Imaging- Laundry contactor: This contactor is showing to be hot at 88.8c around coil. This should be further investigated. Regular thermal imaging will help monitor and provide a foot print and trend for electrical mechanical equipment, helping to determine causes that could lead to possible failure of machinery/power supply. Showing high temperature which is indicative to bearing wear, these results used in conjunction with vibration readings will offer a good indication as to when the bearings require changing. This assists to eliminate any costly unscheduled shutdown. Shows overheating on a cable most likely due to over bending of cable. MitchellWest Ltd Unit 13-14 Cosford business Park, Central Park, Lutterworth, LE17 4QU Website: www.mitchellwest.co.uk Email: [email protected] Telephone: 01455  1 MitchellWest Ltd Electrical & Mechanical Support for Mission Critical Systems Vibration monitoring following trends over a period of time can help determine overloads, misalignments, insufficient lubrication, assembly defects and unbalanced shafts which can all lead to catastrophic failures. Vibration Analysis- 10 9 8 7 6 5 4 3 2 1 Vibration measurements are taken across the machine without any disruption to a working site To ensure the reliability of your Static UPS back up supply system it is not sufficient enough just to carry out inspections alone, regular battery impedance testing of the UPS batteries will help set a trend of results that will predict when batteries start to develop faults the results are nonintrusive to the system and offer immediate results with the equipment MitchellWest utilises so any possible problems that could result in failure of the back-up supply system can be highlighted at the time of site inspection. Battery Impedance: Graph showing readings of 32 batteries, these results are recorded onto an Excel datasheet, this is a nonintrusive service offering customers instant access to the well-being of their Static UPS battery system(s). MitchellWest Ltd Unit 13-14 Cosford business Park, Central Park, Lutterworth, LE17 4QU Website: www.mitchellwest.co.uk Email: [email protected] Telephone: 01455  2 MitchellWest Ltd Electrical & Mechanical Support for Mission Critical Systems Preventative maintenance services – Sampling analysis The wellbeing of standby and running equipment relies on the correct maintenance, by carrying out regular yearly sampling this can help detect any problems that could be present and offer an indication of when areas need to be investigated further, these would not be visible by visual inspection alone. Indications are offered also as to when coolant and diesel have reached end of life and require replacement this ensures that the engine is kept in good working order and no unnecessary expenditures are incurred. Oil/Fuel/Coolant Analysis Examples of analysis: COOLANT COLOUR: TURQUOISE. THE COOLANT COLOUR LOOKED DARK BUT APPEARED TO BE IN A GOOD CONDITION. MODERATE FOAMING FOUND IN THE SHAKEN SAMPLE - WE WOULD EXPECT TO SEE VERY LITTLE. THE FW IS VERY HIGH AND SOME LARGE RUST PARTICLES WERE PRESENT. GLYCOL CONTENT IS FINE. PLEASE RESAMPLE AGAIN TO CONFIRM, TAKING CARE TO AVOID PULLING PARTICLES FROM THE SUMP BOTTOM. DENSITY @ 15C = 0.859g/ml (IN SPEC) - NO BIODIESEL PRESENCE DETECTED - FLASH POINT @ 56C = NEGATIVE (NO PETROL PRESENCE DETECTED). FUEL IS DRY BUT HAS COUNTED A LITTLE DIRTY WITH SMALLER PARTICULATES (LESS THAN 6 MICRONS, IN SIZE). NO IMMEDIATE ACTIONS NECESSARY. WEAR READINGS GIVE NO CAUSE FOR CONCERN. THE VISCOSITY IS TRENDING A LITTLE LOW AND A TRACE OF WATER W AS DETECTED BUT WE'LL OBSERVE THE NEXT SAMPLE BEFORE FURTHER COMMENT. RESAMPLE AS NORMAL. MitchellWest Ltd Unit 13-14 Cosford business Park, Central Park, Lutterworth, LE17 4QU Website: www.mitchellwest.co.uk Email: [email protected] Telephone: 01455 377433 3 MitchellWest Ltd Electrical & Mechanical Support for Mission Critical Systems ROTARY & STATIC UPS SYSTEMS What is a Static UPS? An Uninterruptable Power Supply is a device that supplies battery backup power to servers, PCs, network equipment etc. during short power failure – long term outages allow critical equipment to be powered down safely How can I gain longer running hours to my Static UPS system without additional batteries? A Diesel Generator can also be run in conjunction with a Static UPS to allow continual running, the static UPS taking up the break in supply until the diesel generator is able to support the site load. What other benefits can be gained from having a Static UPS? A Static UPS also provides protection against power supply issues. Frequency deviation, voltage dips, sags and swells can be dealt with by an online dual conversion UPS system. How does a Static UPS work? Line interactive Power is fed through the surge and noise suppression circuitry, the built in line conditioning circuitry regulates high and low voltage back to normal levels and returns stable voltage to the equipment, this does not use an AC DC AC power conversion battery power, the batteries are kept charged by a battery charger. On mains failure the invertor switches on and converts battery power into a simulated sine wave output, when mains returns the invertor switches off and batteries are re-charged. As the switching happens in 10 milliseconds the equipment is unaffected. remains On Line/ Dual Conversion UPS – Highest level of battery back up Double conversion technology continually converts incoming AC power into filtered DC Power, and then resynthesizes it back into AC power with a pure sine wave. No transfer time, power is first broken down then reconstructed by the invertor which is on-line 100% of the time. This process eliminates incoming surge and line noise, adjusts high and low voltages and produces perfect sine wave power and fixed frequency regardless of the mains frequency. MitchellWest Ltd Unit 13-14 Cosford business Park, Central Park, Lutterworth, LE17 4QU Website: www.mitchellwest.co.uk Email: [email protected] Telephone: 01455 377433 4 MitchellWest Ltd Electrical & Mechanical Support for Mission Critical Systems Questions when deciding on size and type of UPS best suited How much power will the equipment requiring mains back up require? What is the preferred run time? For longer run time what is the most cost effective solution? What is the value of data to be protected? (This may affect types of UPS preferred) Location of UPS and access route? Applications In large business environments where reliability is of great importance, a single large UPS can also be a single point of failure that can disrupt many other systems. To provide greater reliability multiple or modular UPS systems should be utilised. Multiple large UPS systems will require a synchronisation panel of some description, with a wraparound manual bypass these systems do not give the opportunity of repair whilst the system is running, the faulty UPS having to be isolated to work on, this is the N+1 configuration. Modular UPS systems have the advantage of taking this load and spreading it across multiple UPS module contained in a single cabinet, the advantage of this is that if a module should fail the UPS load is not affected by the failure, the faulty module can then be exchanged on most of these systems (termed as Hot Swap) without the system having to put into bypass, the same can also be said for the batteries as these are installed as a multiple string system allowing batteries to be changed with the UPS online MitchellWest Ltd Unit 13-14 Cosford business Park, Central Park, Lutterworth, LE17 4QU Website: www.mitchellwest.co.uk Email: [email protected] Telephone: 01455 377433 5 MitchellWest Ltd Electrical & Mechanical Support for Mission Critical Systems Multiple Redundancies Many computer servers offer the option of redundant power supplies, so that in the event of one power supply failing, one or more other power supplies are able to power the load. This is a critical point – each power supply must be able to power the entire server by itself. Redundancy is further enhanced by plugging each power supply into a different circuit (i.e. to a different circuit breaker on a different distribution board). Redundant protection can be extended further yet by connecting each power supply to its own UPS. This provides double protection from both a power supply failure and a UPS failure so that continued operation is assured. This configuration is also referred to as 1+1 or 2N redundancy. If the budget does not allow for two identical UPS units then it is common practice to plug one power supply into mains power and the other into the UPS What is a Rotary UPS? A rotary UPS stores kinetic energy in the form of a rotating mass and this is used to power the load in the event of mains disturbances There are many types available, from offline line units similar in operation to the line interactive static UPS to more complicated systems involving vacuums and inert gas to lessen resistance whilst in motion and to increase overall efficiency. Some come as units that also have a battery backup supply others come with a Diesel generator of some description whilst the remainder are classed as Diesel Rotary UPS, these systems are built as a modular unit with alternator, energy store and diesel engine being closely coupled on a steel base frame, with a clutch separating the diesel engine from the energy store the engine only runs when the clutch is closed which would occur on mains disruption. When should I consider using a Rotary UPS versus a Static UPS? When space is limited. When large amounts of power are required (i.e. when excess of 1 megawatt or multiple megawatts of power are required). Rotary UPS systems can be run in parallel and N+ 1 configuration. There are no requirements for specialist air conditioning or battery rooms. Most static UPS installations also have standby Diesel power generation, this eliminates the need. Rotary UPS systems are suitable for all loads including Motor start requirements. What can MitchellWest offer? Mitchellwest can offer a single point contact for the whole project of Standby Power applications from the on start of offering power surveys to establish the true foot print of a working site. Offering un-biased product selection ensures that the customer is offered the best suited product that meets both site requirements and project costs. To secure a reliable power supply MitchellWest offer a complete package for preventative maintenance regime for all onsite back up supply equipment and for peace of mind our multi skilled engineers are able to offer electrical services. MitchellWest Ltd Unit 13-14 Cosford business Park, Central Park, Lutterworth, LE17 4QU Website: www.mitchellwest.co.uk Email: [email protected] Telephone: 01455 377433 6 MitchellWest Ltd Electrical & Mechanical Support for Mission Critical Systems BATTERY IMPEDANCE TESTING The battery is the most important link in a Critical Power back up system. WHY IS MONITORING B AT TERY IMPEDANCE AN IM PORTANT PART OF PREV ENTATIV E MAINTENANCE ? High impedance is another term for "high internal resistance"; this means with age or poor maintenance a rechargeable battery develops a high internal resistance causing the battery to collapse with heavy current demands. Effects of impedance on battery load. A battery with low impedance provides unrestricted current flow and delivers all available energy. A battery with high impedance cannot deliver high energy bursts due to a restricted path and equipment may cut off prematurely. What can I do to maintain a reliable mains failure system? Impedance testing is a safer, easier and more effective method of determining the battery condition without the downtime and cost associated with load bank discharge tests. This involves passing a low frequency AC current through the battery string. The resulting AC voltage produced across each cell is measured and simply divided by the current to give the impedance of the cell. An individual cell can be immediately compared with the average impedance results of the other cells to determine its condition. By comparing results over time, the ageing of an entire battery can be plotted and replacement cost budgeted. By measuring across the cells and adjacent interlinks any failing interconnections will also stand out during the test. Advantages Battery remains fully charged after the test Battery life is not reduced by repeated cycling Individual weak or failing blocks are easily identified No load bank required – reduces cost and risk/downtime for connection Safe – injected AC current is low: batteries will not fail catastrophically Plot of Impedance Results 7.0 6.0 Im pe danc5e.0 Re s ults4.0 3.0 2.0 1 4 7 10 13 16 19 22 25 28 31 34 Ce ll Num ber OTHER MEANS OF TESTING WHICH MAY BE OFFERED BY ALTERNATIVE SUPPLIERS: Disadvantages of Battery Discharge Testing Battery discharge testing can reveal if a battery string has failed and can be used to determine overall ageing over time. The disadvantages are this leaves the UPS system with a discharged battery: The battery life expectancy will decrease with each discharge The testing itself will accelerate the ageing process. Also, to identify individual failing blocks, the voltage of each must be monitored during the discharge test. A serious task with 204 cells and a discharge time of only 10 minutes; and a serious safety hazard if a cell fails and ruptures under load. MitchellWest Ltd Unit 13-14 Cosford business Park, Central Park, Lutterworth, LE17 4QU Website: www.mitchellwest.co.uk Email: [email protected] Telephone: 01455 377433 7 MitchellWest Ltd Electrical & Mechanical Support for Mission Critical Systems Battery Impedance Maintenance offered by MitchellWest MitchellWest utilises testing equipment for battery impedance testing, this allows us to offer our customers accurate information by utilising the most advanced technology. Our equipment helps determine the health of lead-acid cells up to 2000 AH by taking measurements of the most important battery parameters. MitchellWest believes in the investment of the latest testing equipment to offer our customers the most reliable and advanced methods of testing with minimum down time and risks to their business. Our Battery impedance testing equipment allows live battery testing with no UPS down time which in turn offers our customers less risk during battery testing compared with load testing and other techniques. Impedance testing results are calculated immediately by the equipment allowing on site reviews to enable immediate decisions to be made where required. We are able to measure up to 2000 AH lead acid cells to test a wide range of batteries. The equipment has the capacity to store 1 million cells in a string formation which means no stopping or deleting of information is required to enable testing to continue. Areas that lead to battery failure – Impedance testing and visual inspection can help determine such faults and assist to maintain a secure back up supply FLOODED LEAD ACID POSITIVE GRID CORROSION PORT SEAL LEAKING SHEDDING SULPHATION HARD SHORTS SLIVERING VRLA POSITIVE GRID CORROSION POST SEAL LEAKS DRY OUT (LOSS OF COMPRESSION) SULPHATION HARD AND SOFT (DENDRITIC) SHORTS THERMAL RUNAWAY By conducting regular impedance testing of UPS batteries and visual inspections all of the above can be determined, inspection of the UPS unit alone is not sufficient to maintain a reliable back support system, carrying out regular battery impedance services will ensure reliable systems, by assisting in early warnings that could have resulted in system failure during a mains outage. By detecting the above defects early or as they start it is possible to eliminate some of these situations, by lengthening the life of the battery system and being able to predict when battery replacement is required you can make certain the system is as cost effective as possible by ensuring that the battery system is being maintained in a healthy state. MitchellWest engineers are trained to carry out all services required to maintain a reliable back up power system and on every maintenance visit our engineers carry out battery impedance testing to ensure a secure back up system as part of our service regime unlike most other service companies who charge this as an additional service. MitchellWest Ltd Unit 13-14 Cosford business Park, Central Park, Lutterworth, LE17 4QU Website: www.mitchellwest.co.uk Email: [email protected] Telephone: 01455 377433 8 MitchellWest Ltd Electrical & mechanical Support for Mission Critical Systems ENERGY EFFICIENT LIGHTING Office Lighting Why choose energy efficient lighting? It is estimated that around 70% of commercial installations still use inefficient lighting products, perhaps this is because the lighting scheme is not a high priority for everyone but we need to change the way we think about light and put it at the forefront of office design, in doing so, we stand to make significant savings that will benefit the environment and reduce overhead costs. What are the savings? By changing office lighting you can save up to 50% per year on your lighting costs and most low energy fittings are low maintenance. What are the options? There are many different options that will help in reducing your energy consumption. LED has now over taken compact florescent as the market leader in office retro-fit lighting. LED panels can be mounted in existing ceiling grids with a choice of warm white (2700k), cool white (4000k) and daylight (6500k). Why choose LED? LED is extremely efficient and the ideal replacement for halogen downlighters, more expensive than CFLs but saves even more money in the long term. By using LED 600x600 panels you can save on average £500 per year on MitchellWest Ltd Unit 13-14 Cosford business Park, Central Park, Lutterworth, LE17 4QU Website: www.mitchellwest.co.uk Email: [email protected] Telephone: 01455 377433 9 MitchellWest Ltd Electrical & Mechanical Support for Mission Critical Systems ENERGY EFFICIENT LIGHTING Warehouse Lighting What are options for changing my lighting? Whatever style of lighting you have existing in your premises whether it be a low or high bay fitting or a batten type fitting there are many options for reducing your energy usage. You can choose between LED fittings which offer the best savings for your energy with an average saving up to 80%. There is the T5 high output low energy fittings which can also incorporate lighting sensors which on average could save up to 70%. Then there is the option of retro-fitting just a new low energy lamp whether it is CFL or LED. What are the benefits of changing warehouse lighting? Save up to 80% on your lighting bills. Up to 8000 hour lamp life Instant switching Dimmable options Improve light quality Lower maintenance costs How do I know which option to choose? Part of our commitment to helping our customers reduce their energy usage is to offer a lighting survey of the areas that need changing. As part of this survey we will go through the options that are best for you and show you the savings that will be made and the payback time of the investment that is made by you. MitchellWest Ltd Unit 13-14 Cosford business Park, Central Park, Lutterworth, LE17 4QU Website: www.mitchellwest.co.uk Email: [email protected] Telephone: 01455 377433 0 10 MitchellWest Ltd Electrical & Mechanical Support for Mission Critical Systems Electrical Services What is remote monitoring? Remote monitoring is a way of accessing your emergency lighting on a daily basis via a laptop or pc. How would remote monitoring help me? Remote monitoring eliminates the time and cost-intensive process of manually testing emergency lighting systems, thus providing operational cost savings that can be used to free maintenance staff to perform other critical tasks. How does PAT testing affect me? Health and safety regulations require that electrical appliances be safe to prevent harm to the workers. Many types of equipment require testing at regular intervals to ensure continual safety; the interval between tests is dependent on both the type of appliance and the environment it is used in. When do I need equipment to be PAT tested? HSE Guidance Notes advice is that "regular testing" is carried out and this is generally interpreted as a requirement for annual testing. MitchellWest Ltd Unit 13-14 Cosford business Park, Central Park, Lutterworth, LE17 4QU Website: www.mitchellwest.co.uk Email: [email protected] Telephone: 01455 377433 1 11 MitchellWest Ltd Electrical & Mechanical Support for Mission Critical Systems Electrical Services PERIODIC AND EMERGENCY TESTING Why carry out periodic inspection and testing? Periodic inspection and testing is necessary because all electrical installations deteriorate due to a number of factors such as damage, wear, tear, corrosion, excessive electrical loading, ageing and environmental influences. When is a periodic inspection needed? It is recommended that periodic and inspection testing is carried out at least every 5 years in commercial properties. This can be split up to 20% each year or 100% in one year. Why do I need my emergency lighting testing? Health and Safety legislation requires all commercial and public premises to have an emergency lighting installation that complies with BS5266 parts 1, 2 & 3. The main reason for installing an emergency lighting system is to enable the building to meet fire safety legislation in a way that is visually acceptable, meets the user’s needs for ease of operation and maintenance and enables safe passage in the event of fire or power failure. When do I need them testing? Daily Indicators of central power supply should be visually inspected for correct operation. Monthly Each luminaire should be switched into emergency mode to ensure operation of each lamp. Each luminaire should be returned to normal mode ensuring that mains indicators are energised. Annually – The above monthly inspections should be carried out plus the following additional tests:· Each luminaire should be tested for its full rated duration · The charging arrangements should be checked for proper functions · The date of the test should be recorded in the ‘system log book’ · A certificate of inspection and testing shall be issued to the responsible person MitchellWest Ltd Unit 13-14 Cosford business Park, Central Park, Lutterworth, LE17 4QU Website: www.mitchellwest.co.uk Email: [email protected] Telephone: 01455 377433 2 12 MitchellWest Ltd Electrical & Mechanical Support for Mission Critical Systems Maintenance services for Backup Systems - DIESEL ROTARY UPS, STATIC UPS, DIESEL GENERATORS, CONTROL PANELS, ETC MitchellWest offer maintenance packages to suit all site requirements, our belief is in offering a preventative maintenance package for all types of Diesel Generators, Rotary and Static UPS systems, so when the mains fails the equipment will work properly and efficiently. MitchellWest’s engineering team are qualified in both electrical and mechanical aspects enabling them to be able to offer support for the complete onsite back up supply system from the mains supply through to the equipment side. MitchellWest believe in taking the time to understand the back up systems requirements, whilst ensuring the customers needs and expectations are met. MitchellWest ensures that service packages offered will meet the manufacturers guide lines whilst ensuring the preventative services MitchellWest offer aid to eliminate unscheduled down time. ENGINEERING SERVICES Preventative maintenance packages Repair Load testing building / load bank Major overhauls & rebuilds Supply, installation & commissioning for Back Up Power Systems Static/ Rotary UPS units Diesel Generators Static/Diesel Rotary UPS & Diesel Generators Our preventative maintenance regime can be offered in various levels to suit both the customers budget and the equipment’s needs. It is not enough just to inspect the equipment, our preventative maintenance services also offer our customer’s sites the reliability and control they require. Generator/Static Rotary UPS Services Visual inspection check Maintenance Service Thermal Survey Vibration analysis Oil replacement Pre inspection health Filter replacement Coolant, Fuel & Oil samples Building/ Load Bank Testing Power Surveys On site diagnostics On site repair Static UPS Units: The batteries form a vital part of the supporting system, so our maintenance visits are always inclusive of battery impedance testing and thermal imaging where necessary. Diesel Generator: To offer added reliability to this equipment alongside routine maintenance visits yearly oil and coolant sample are taken by MitchellWest, this offers an insight to the engines wellbeing and forms part of the preventative maintenance regime. Our service packages are compiled once we have full insight to the customers equipment and site requirements, we will then detail recommended visits required per year along with preventative maintenance services that can be incorporated to offer the customer control over the back up supply system. MitchellWest Ltd Unit 13-14 Cosford business Park, Central Park, Lutterworth, LE17 4QU Website: www.mitchellwest.co.uk Email: [email protected] Telephone: 01455 377433 3 13 MitchellWest Ltd Electrical & Mechanical Support for Mission Critical Systems MitchellWest are able to offer customers additional bespoke services where required: FABRICATION SERVICES Safety Cage for Gas Bottles We assisted our customer by fabricating a bespoke cage to house the catering gas bottles. SPECALIST– HV LAB RELOCATION HV lab was de-commissioned and relocated to a new area, re-installation and commissioning were carried out. REBUILD AND LOAD TEST Cummins KTA50G3 engine was removed from a 20ft ISO container to be given a total overhaul and full load test prior to being returned to site for re-installation and commissioning. REPLACEMENT OF PLANT ROOM FLOOR Replacement of the plant room floor, the rotary UPS units being removed by ourselves exceeded the weight limit of the existing floor area, MitchellWest were able to calculate the loading required and replaced the area with a new floor suitable for weights, this was done over a weekend offering no disruptions to the sites day to day business activities. MitchellWest Ltd Unit 13-14 Cosford business Park, Central Park, Lutterworth, LE17 4QU Website: www.mitchellwest.co.uk Email: [email protected] Telephone: 01455 377433 4 14 MitchellWest Ltd Electrical & Mechanical Support for Mission Critical Systems 1000KVA ROTARY UPS – REMOVAL AND REPLACEMENT OF ALTERNATOR AND ACCU ROTOR MitchellWest were instructed to undertake the removal of an alternator and accu rotor from containerised rotary ups on a government site. MitchellWest were able to supply all in-house skilled labour from the de-commissioning through to the removal and loading of the equipment for despatch to the manufacturer for the repair works to be carried out. MitchellWest carried out the re-installation and commissioning of the equipment upon its return. All works were carried out efficiently with minimum disruption time to the customer’s working site. Cooling Solutions – Preventative Solutions The Switchgear room was running at high temperature due to poor air circulation, new fan and duct work was installed so cold air was being input at low level and hot air being extracted at high level, MitchellWest examined several avenues to achieve additional cooling solutions. The finalised solution offered a reduction of 100C, this assisted in ensuring the wellbeing and efficiency of the switch gear. The picture to the left shows new fans that were supplied and installed by MitchellWest into the containers housing the Rotary UPS, improving the running temperature inside of the container by 55%. MitchellWest Ltd Unit 13-14 Cosford business Park, Central Park, Lutterworth, LE17 4QU Website: www.mitchellwest.co.uk Email: [email protected] Telephone: 01455 377433 5 15 MitchellWest Ltd Electrical & Mechanical Support for Mission Critical Systems SUPPLY AND INSTALLATION OF PIPEWORK FOR DIESEL ROTARY UPS EQUIPMENT. MitchellWest supplied a skilled team to supply and install coolant pipe work to an existing building; this installation had to overcome many restrictions on site, from working space through to numerous changes to original pipe route that was no longer suitable due to changes in location of equipment. With the skills of MitchellWest’s team on site consisting of fabrication/coded welders and mechanical engineers their expertise meant that this building’s problems were able to be overcome by fabricating coolant pipe work on site. The installation consisted of 250 metres of 5 inch coolant pipe work for 3 Rotary UPS machines, due to technical requests by an on-site consultant all joins had to be flanged, this led to further on site fabrication work to overcome already very restrictive entry holes in the roof top level. Having the in house skills for both fabrication, welding and technical calculations MitchellWest were able to adapt the pipe work to suite the constant demands on this particular building. SUPPLY AND INSTALLATION OF PPG2 COMPLIANT DIESEL FUEL TANK FOR ROTARY UPS EQUIPMENT. Customer’s existing fuel systems were not compliant with PPG2 regulations, to ensure the most cost effective solution and keeping to the PPG 2 regulations an additional Diesel Fuel tank was designed and manufactured by a leading tank supplier to the required dimensions given by MitchellWest. This meant the existing internal fuel tank on the rotary ups equipment that did not meet with current PPG2 regulations was able to be de-commissioned and made safe with minimum costs involved or disruption to to a working site. The new diesel fuel tank was installed alongside the equipment, all associated pipe work was carried out by MitchellWest’s technical team. The project was carried out over a 4 day period. The customer now has a fully compliant fuel system. MitchellWest Ltd Unit 13-14 Cosford business Park, Central Park, Lutterworth, LE17 4QU Website: www.mitchellwest.co.uk Email: [email protected] Telephone: 01455 377433 16 MitchellWest Ltd Electrical & Mechanical Support for Mission Critical Systems EFFICIENT LIGHTING – SUPPLY & INSTALLATION LED lighting panels were installed by MitchellWest, this gave the site a more efficient lighting system for the office areas, the investment into this type of lighting will save this site up to 50% in comparison to the previous lighting running costs. The more efficient LED lighting panels were also fitted with motion sensors to offer the complete energy efficient package. Emergency Lighting Selected lighting panels were fitted with battery packs to enable the same lighting system to act as emergency light MitchellWest Ltd Unit 13-14 Cosford business Park, Central Park, Lutterworth, LE17 4QU Website: www.mitchellwest.co.uk Email: [email protected] Telephone: 01455 377433 17 MitchellWest Ltd Electrical & Mechanical Support for Mission Critical Systems Load Testing We currently own a fleet of load banks that consists of a number of 300 & 500KW load banks that can be used together Most sites are tested with the building load which is very important to prove the changeover system works and the diesel generator performs correctly with the building load configuration and levels. It is also beneficial to apply an artificial load (load bank), this is because most generators are massively overrated for future expansion meaning the diesel engines are not carrying the load they have been designed for and are under loaded, this will lead to wet-stacking and carbon build up in the combustion chamber and exhaust system which will lead to increased oil and fuel consumption and a decreased/poor engine performance and efficiency Why Should I do a load test? Running a load bank with your generator system will help to reduce wet-stacking and carbon build up and make the generator perform better and much more efficiently, if your generator is running a low building load it is recommended to place an artificial load on the generator system for a long period of time, over one day, to clean/keep clean the combustion chamber/exhaust. As discussed above we now have our own load banks to offer this service at a competitive rate. Please contact us for more information or Pricing regarding this service. MitchellWest Ltd Unit 13-14 Cosford business Park, Central Park, Lutterworth, LE17 4QU Website: www.mitchellwest.co.uk Email: [email protected] Telephone: 01455 377433 18