CLEANING OF EQUIPMENT FOR OXYGEN SERVICE - AIGA

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1 Material/Size Appendix H: Cleaning of a vessel with aqueous agent Stainless steel; volume of the vessel from 1000 to 40000 litres. 2 Cleaning Method 2.1 Mechanical Cleaning 53 AIGA 012/04 Before final welding interior surfaces shall be mechanically cleaned (grinding, brushing, grit blasting). 2.2 De-dusting Internal surfaces shall be swept and vacuumed. 2.3 Degreasing After welding and hydrostatic testing, a jet spray cleaning operation is carried out using phosphate free detergent (50°C, duration 1 h) followed by flushing with clean water at 50-60°C. 3 Rinsing Spraying with de-mineralised water. 4 Drying Purging with dry, oil free, clean air or nitrogen. 5 Inspection Direct visual inspection with White Light and Ultraviolet Light. 6 Conservation of Cleanliness At ail stages of assembly, components are protected against contamination. After inspection the vessel is sealed with degreased caps and slightly pressurised with nitrogen. 7 Labelling "CLEANED FOR OXYGEN SERVICE" Pressurised with N2 …………….. bar Keep free from oil and grease Inspection date/stamp"
1. Material / Size Appendix I: Cleaning of a transportable vacuum insulated vessel Inner vessel and outer jacket: Stainless steel. Volume: Up to 500 litres. 2. Initial Cleaning Method 54 AIGA 012/04 Shell and vessel ends are purchased pre-cleaned and packed to oxygen standard. Root weld should be by y TIG welding in order to ensure smooth root weld profile and avoid welding debris. 3. Cleaning Method Before final welding and isolation of the inner vessel the surfaces are manually cleaned with acetone using a dry cloth. 4. Pressure Test Carried out with nitrogen or oil free air. Testing is carried out in a special container or chamber capable of withstanding a potential explosion of the vessel. 5. Inspection Method Wipe test and UV light inspection of parts before final welding. 6. Conservation of Cleanliness At all stages parts are protected against contamination. Openings are closed with caps. 7. Labelling "CLEANED FOR OXYGEN SERVICE" To be kept free from oil and grease Inspection date/stamp"
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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 and 56: 50 AIGA 012/04 Appendix F: Cleaning
Page 57: A) Jet tube B) Injection C) Condens
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CLEANING OF EQUIPMENT FOR OXYGEN SERVICE - AIGA

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