1. Installation to degrease the SPS magnets chambers Leonel Ferreira

2. 1)Principle 2)Surface required 3)Services 4)Safety

3. SPS_U Degreasing, principle Main steps a)Initial contamination control (to be defined, possibly just visual inspection) b)Acetone impregnated rag cleaning (if necessary) - ~ 5 minutes per magnet; c)Degreasing by circulation (detergent) – 2 hours; d)Drain of the circuit after each cycle – 10 minutes per magnet; e)Rinsing (clean water) to container (RP control) – 30 minutes; f)Drying with blower – up to 2 hours. g)Control of cleanliness (to be defined, possibly statistical sampling and FTIR analysis) Electrochemistry & surface finishing

4. Main equipment a)Four tanks for detergent and water (volume to be defined: ~ 1.5 m3/each) equipped with heaters and filtering pumps; b)Peristaltic pump ( minimum 5 m 3 /h + option to invert pumping direction) c)Blower d)Piping (hoses + valves + quick connectors) e)Transportable containers (0.8 m 3 ) Electrochemistry & surface finishing SPS_U Degreasing, principle

5. Identical principle: Cleaning machine for LHC magnets Electrochemistry & surface finishing NB: all can be done without building a machine on purpose, but implies more manual operations SPS_U Degreasing, principle

6. a)Cleaning installation : 6 m x 3 m b)Rag cleaning procedure : 8 m x 1m Cleaning installation MagnetsRag cleaning procedure Lay-out example Electrochemistry & surface finishing SPS_U Degreasing, surface required

7. a)Demineralised water (1 MOhm.cm) – 2 to 4 m3/cleaning cycle b)Clean, dry compressed air or nitrogen c)Power supply 220 and 380 V (16 and 32 A) d)Ventilation Electrochemistry & surface finishing SPS_U Degreasing, services

8. a)A retention basin for the cleaning installation, the magnets being cleaned plus containers with waste water from the rinsing step must be foreseen; b)A safety shower must be installed in the working area (a portable one is enough) and a disposable eye washer; c)The working area must be well delimited and the chemical risks easily identified; d)Detergent, filters, rags and water for elimination must be controlled by RP. Electrochemistry & surface finishing SPS_U Degreasing, Safety