CLEANING OF EQUIPMENT FOR OXYGEN SERVICE - AIGA

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33 <strong>AIGA</strong> 012/04 The emission to water is the main environmental question for consideration in the use of machines for aqueous cleaning. The emission to the atmosphere is the main impact from solvents. The disposal of waste must follow local regulations. The disposal methods used for water-based processes will depend on type of contaminants, concentrations, pH etc. The residue from a solventbased process is obtained as a highly concentrated waste, which has to be disposed of according to regulations in force. All electrical equipment including that of the venting system must have the correct flame/explosion proof ratings as defined by national regulations when flammable solvents are used. For environmental aspects see also IGC document 113/03 ‘ Environmental Impacts of Transportation of Gases’. 3 Washing Machines for Aqueous Agents 3.1 Mobile High Pressure Cleaning Equipment Working principle: Fig. 1. High pressure cleaning equipment The main parts are a high-pressure water pump and a high-pressure hose with nozzles. The cleaning agent is applied at low pressure and the rinsing is then performed by high-pressure water with very high velocity. For more difficult contaminants, hot water is required. In some kind of equipment it is possible to inject the dissolved cleaner together with the high-pressure water. Applications: A high pressure cleaning apparatus is suitable for cleaning of big pieces of equipment with easily accessible surfaces like outer surfaces of pumps and compressors. Protect water sensitive parts of the equipment from high-pressure liquid that may penetrate into internal parts. This kind of equipment can also be used for internal cleaning of pipes. (See Appendix D "Detergent cleaning of pipes with high pressure cleaning -equipment").
3.2 Wash Cabins for Manual Cleaning Working principle: Fig. 2. Wash cabin for manual cleaning 34 <strong>AIGA</strong> 012/04 The equipment can be open or covered by a lid, with or without venting. The pieces to be cleaned are placed on a grid or a perforated plate. The cleaner can be applied manually by brushing and/or by spraying at low pressure. The cleaner is then re-circulated via a particle filter. Some types of apparatus are equipped with automatic spraying with fixed nozzles or a rotating spraying arm. When the cleaner has become too contaminated for use, the tank is emptied and cleaned. The cleaning agent is normally used at ambient temperature. Alter rinsing with clean water, drying is done by dripping off followed by blowing with oil-free, dry, clean air or nitrogen. Applications: This type of equipment is suited mainly for intermittent cleaning of small details for instance in correction with repair and maintenance work. 3.3 Manual Immersion Cleaning Equipment
Page 1 and 2: CLEANING OF EQUIPMENT FOR OXYGEN SE
Page 3 and 4: Acknowledgement AIGA 012/04 This do
Page 5 and 6: AIGA 012/04 6.4 Acceptance Criteria
Page 7 and 8: 2 AIGA 012/04 The phase-out schedul
Page 9 and 10: - frequently - occasionally 4 AIGA
Page 11 and 12: 6 AIGA 012/04 As a final stage in t
Page 13 and 14: 8 AIGA 012/04 Hydrochloric and nitr
Page 15 and 16: 10 AIGA 012/04 4.2.3.4 Notes on Sol
Page 17 and 18: 12 AIGA 012/04 f) An aqueous cleani
Page 19 and 20: 14 AIGA 012/04 Operators carrying o
Page 21 and 22: 5.1.2 Wire Brushes 16 AIGA 012/04 W
Page 23 and 24: 18 AIGA 012/04 These characteristic
Page 25 and 26: Solvent (trival / common name) CHLO
Page 27 and 28: Table 3: Acid chemical cleaning mat
Page 29 and 30: 6 Inspection methods and acceptance
Page 31 and 32: The amount of contaminants in a sam
Page 33 and 34: 6.4.1 Odour Test 28 AIGA 012/04 If
Page 35 and 36: 30 AIGA 012/04 Cleaned components s
Page 37: 32 AIGA 012/04 Appendix B: Cleaning
Page 41 and 42: A) Heating element B) Lifting beam
Page 43 and 44: 38 AIGA 012/04 with flushing / spra
Page 45 and 46: D) Closed cleaner reservoir E) Clea
Page 47 and 48: 42 AIGA 012/04 Emulsified oil can b
Page 49 and 50: 4.4 Post Fabrication Cleaning 44 AI
Page 51 and 52: 46 AIGA 012/04 Appendix D: Detergen
Page 53 and 54: 48 AIGA 012/04 Fig 1. High pressure
Page 55 and 56: 50 AIGA 012/04 Appendix F: Cleaning
Page 57 and 58: A) Jet tube B) Injection C) Condens
Page 59 and 60: 1. Material / Size Appendix I: Clea

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