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ALARA OPTIMIZATION

ALARA OPTIMIZATION. Compressed air filtration for Breathing. Hanil Nuclear co. Shin-kori Office`. 1. Contents. 1`. Technical Background. 2. Contents of Development. 3. Performancs & Operation. 4. Expect Effects. 5. Future(near) Plans. 1. Technical Background.

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ALARA OPTIMIZATION

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  1. ALARA OPTIMIZATION Compressed air filtration for Breathing Hanil Nuclear co. Shin-kori Office`

  2. 1 Contents 1` Technical Background 2 Contents of Development 3 Performancs & Operation 4 Expect Effects 5 Future(near) Plans

  3. 1 Technical Background

  4. Optimization of ALARA!!! BACKGROUND OF ITEM SELECTION Worker to work inside steam generator to supply Compressed Clean Air Breathing Compressed air contain moisture and small particles by pipe corrosion Hot and humid environment increase human temp. and cause of the fatigue Mist causes breathing and is not for visibility

  5. PROBLEM WITH THE COMPRESSED AIR SUPPLY Use steel pipe for long-time, erosion phenomenon occurrence by air impact Small particles suspended in air by erosion Maybe not suitable for human breath. Corroded Pipe inside

  6. Solid Liquid Gas PROBLEM WITH THE COMPRESSED AIR SUPPLY (CONT’D) • Oil mist • Unsaturated • Hydrocarbons • Corrosive ases, • ETC.. • Condensate • Oil drops • Aerosol. ETC.. • Solids in air • haled • Impurities caused by the compression process • Internal corrosives. ETC..

  7. PROBLEM WITH THE COMPRESSED AIR SUPPLY (CONT’D) AtomsphericContains more than hundreds of millions dust and impurities The concentration of impurities from the air compression process is maxmized Speculation that about 140 million impurities exist in air of 1ton If undergo about 8bar pressure, number of impurities increases about 1120million per air 1ton

  8. KIND AND SIZE OF IMPURITIES PIPE INTERNAL Unit :μm

  9. 2 Contents of Development

  10. CONTENTS ■ 2Air Filter Installation Clean Air Supply By Removal Dust and Oil mist Purification Filter for the Removal of Virus and Vacteria in the Air ■ Compressed Air Cooling System Installation Cold and Hot air Separation by Vortex and Supply Fresh Air to Worker Maintain Fresh condition internal workware and prevent mist by Supplying Cold air 장기재직 유도 등 제도 개선 ■ Regulator Installation Regulator for Suitable Air Supply in Worker’s Breath When Air Supply Connector need, Extension Possibility

  11. CONTENTS (CONT’D) 1st FILTER (NH-3200) 2nd FILTER (NH-1300) Regulator Air Cooling System

  12. EQUIPMENT COMPOSITION

  13. 36 3 Performance & Operation

  14. FINISHED PRODUCTION EQUIPMENT

  15. PERFORMANCE EVALUATION OF A PROTOTYPE Filtration Capacity (1stFilter) Filtration: Particles5 μm Element Structure : sintered Resin Performance : Removal condensate and Oil in the Air Filtration Capacity(2ndFilter) Filtration: Particles0.01 μm Element Structure : Urethane, Glass Fiber , Micro Fiber Punching Metal Performance : Oil99.99% Removal, Oli mist>0.1 ppm

  16. PERFORMANCE EVALUATION OF A PROTOTYPE (CONT’D) Jade Color Section Displays Proper Temperature

  17. STANDARD REQUIREMENTS BY : NIKKEI Published“Mechanical Separate Volume”`

  18. 36 4 Expect Effects

  19. EXPECT EFFECTS ■ Reducing Working Time & Working Environment Improvement Improvement of the Working Condition by Filtration & supply Fresh air To Prevent Mist Contributes Reduction Working Time & Quality Comfortable Working Environment by Fresh Air Supply ■ Can be Used In Low Level Air Room and Close Chamber ETC.. 장기재직 유도 등 제도 개선 Application possibility to that oxygen closeness space work and so on 장기재직 유도 등 제도 개선

  20. 36 5 Future (Near) Plans

  21. Action for ALARA !!! FIELD APPLICATION PLAN Work on the Steam Generator During Overall Work on In-Core Thimble Cleaning Work on the High Radiation Area and Air Supply Work occurrence (Reactor, Valve, ETC..)

  22. TASKS & SCHEDULE Changing Prototyping company Making Prototype Improvement Issues & 2nd Prototype Making 2nd Prototype Quality test Complete 2nd Prototype and Take Over

  23. THANK YOU

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