Class 195 & Class 331 Sanding Equipment Modification

Description

The class 195 & class 331 fleet have been found to have poorly functioning sanding & compressor performance. Initial review of Sand flow compared against industry recommended levels (1000grams within 30 seconds) shows that current performance is 397grams & 395grams within 30 seconds respectively. The works to be undertaken within this contract will see the performance of the sanding equipment aligned to industry standard via; 1. Improving Sanding Performance through modifications & re-baselining of the system 2. Reduce any additional Maintenance which is being undertaken. 3. Reduce the likelihood of future degradation in sand delivery performance. Lot 1: Northern Trains currently operate a fleet of 43 CAF built Class 331 EMU train sets (made up of 31 class 331/0 3-carriage trains and 12 class 331/1 4-carriage trains ) and 58 CAF built Class 195 DMU trainsets (made up of 25 class 195/0 2-carriage trains and 33 class 195/1 3-carraige trains) which is equivalent too; o 86 x Class 331 Leading Vehicles equipped with a sanding system o 116 x Class 195 Leading Vehicles equipped with a sanding system. The works to be undertaken can be split into the following tasks; TASK - Sanding Improvements - Supply and install /adjust Pressure Reducing Valve to correct setting. - Supply and replace all SDN31.1 sander units - Replace Sand - Purge sander air pipework of any contamination - Baseline sander performance to 2kg/min TASK - Compressor Improvements - Supply replacement compressor "oil trap" filter and "micromesh" coalescing filters and any associated service parts for all 177 compressors. - Provide 5 working days' worth of training and competency assessment for Northern staff covering replacing compressor "oil trap" filter and "micromesh" coalescing filters and any associated service parts for all 177 compressors.