CLEANING OF EQUIPMENT FOR OXYGEN SERVICE - AIGA

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Appendix G: Cleaning of a vessel with aqueous agent and solvent 1. Material /Size Stainless steel or aluminium alloy Dimensions up to ∅ 3000 x 4000 mm 2. Pre-cleaning 51 AIGA 012/04 Prior to welding, vessel shell and ends are pre-cleaned separately with an aqueous agent (phosphate free with low alkaline content) at a temperature of approximately 50°C, then flushed with demineralised water for approximately 60 minutes. 3. Inspection before Welding A wipe test is carried out after the drying operation. If there is any indication of grease or oil, the pie-cleaning operation is to be repeated. 4. Cleaning After final welding a tube is installed in order to carry out a complete jet spray cleaning using solvent 141 b (see figure and chapter 3, table 1). 5. Inspection after Cleaning Quantitative control by solvent extraction (weight of the residue after vaporisation) 6. Conservation of Cleanliness At all stages of assembly, components are protected against contamination. After inspection the tank is sealed with degreased flanges and slightly pressurised with nitrogen. 7. Labelling "CLEANED FOR OXYGEN SERVICE Pressurised with N2 ………………….bar Keep free from oil and grease Inspection date/stamp"
A) Jet tube B) Injection C) Condensation D) Purification E) Control F) Disposal G) Solvent recycling 52 AIGA 012/04
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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 and 38: 32 AIGA 012/04 Appendix B: Cleaning
Page 39 and 40: 3.2 Wash Cabins for Manual 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: 50 AIGA 012/04 Appendix F: Cleaning
Page 59 and 60: 1. Material / Size Appendix I: Clea
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CLEANING OF EQUIPMENT FOR OXYGEN SERVICE - AIGA

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