CLICK TO EDIT MASTER TITLE STYLE $3,000 budget 2 Elliot Nation C - - PowerPoint PPT Presentation

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CLICK TO EDIT MASTER TITLE STYLE $3,000 budget 2 Elliot Nation C - - PowerPoint PPT Presentation

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P ORTABLE S ANITIZATION C HAMBER Robertson Beauchamp, Jacob Blackburn, Lauren Kieffer, Elliot Nation, Angel Soto, Dangxian Zha April 25, 2014 O VERVIEW Introduction Problem Formulation Sanitizing Methods Proposed Design

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PORTABLE SANITIZATION CHAMBER

Robertson Beauchamp, Jacob Blackburn, Lauren Kieffer, Elliot Nation, Angel Soto, Dangxian Zha April 25, 2014

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SLIDE 2

OVERVIEW

  • Introduction
  • Problem Formulation
  • Sanitizing Methods
  • Proposed Design
  • Prototyping
  • Testing and Results
  • Final Design
  • Cost Analysis
  • Conclusion

Elliot Nation 1

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CLICK TO EDIT MASTER TITLE STYLE INTRODUCTION

  • W.L. Gore & Associates
  • Portable Sanitization Chamber
  • Decrease bioburden levels of Bacillus

atrophaeus

  • $3,000 budget

Elliot Nation 2

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CLICK TO EDIT MASTER TITLE STYLE CLIENT NEEDS

W.L. Gore is looking for a device that is:

  • Safe for all users
  • Portable
  • Reduces the level of bioburdens on various materials
  • Cost efficient
  • Time efficient

Elliot Nation 3

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SLIDE 5

CLICK TO EDIT MASTER TITLE STYLE GOAL

To develop a portable sanitization process that disinfects items to acceptable bioburden levels.

Elliot Nation 4

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CLICK TO EDIT MASTER TITLE STYLE Problem Formulation

Design requirements are derived from client needs and the scope of the project as:

  • Objectives
  • Constraints

Contemporary sanitizing methods are compared against

  • bjectives to reveal feasible solutions.

Angel Soto 5

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SLIDE 7

CLICK TO EDIT MASTER TITLE STYLE OBJECTIVES

Angel Soto 6

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CLICK TO EDIT MASTER TITLE STYLE CONSTRAINTS

  • Ease of Use
  • Complies with door size standards (3’x3’x6’)
  • Acceptable cycle time (15 minutes)
  • Cycle ends automatically
  • No Ethylene Oxide (EtO)
  • Temperature less than 120°C

Angel Soto 7

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CLICK TO EDIT MASTER TITLE STYLE SANITIZING METHODS

From research, numerous methods were found that sanitize and sterilize equipment in the food and medical field.

  • Autoclave - Steam at high temperature and pressure
  • Chemical spray - Exposure to germicidal chemicals
  • Infrared light - Specific wavelength generates heat
  • Laser exposure - Germicidal light for precision use
  • Ultraviolet (UVC) light - Germicidal light exposure

Angel Soto 8

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CLICK TO EDIT MASTER TITLE STYLE PROPOSED DESIGN

  • Dual process:
  • Vaporized hydrogen peroxide (H2O2)
  • UVC light
  • Fog machine used to vaporize the H2O2
  • UVC lights degrade H2O2 to safe levels
  • Free hydroxyl radicals, OH-, that are strong oxidizing

agents, degrade additional toxins.

  • Aluminum chamber- not reactive with H2O2

Angel Soto 9

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PROPOSED DESIGN

Jacob Blackburn 10

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PROTOTYPE

Jacob Blackburn 11

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PROTOTYPE

4 UVC lights installed Fogging unit on the back panel

Jacob Blackburn 12

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SAFETY COMPONENTS

  • Sealant around the door and panels
  • Safety Switch
  • Magnetic Lock
  • PET Plastic window that protects user from UVC light
  • Emergency Button

Jacob Blackburn 13

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CONTROL SYSTEM

  • Arduino Mega

Microcontroller

  • Will run code and logic for

automated process and user interface

Dangxian Zha 14

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LOGIC FLOW CHART

Dangxian Zha 15

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CONTROL SYSTEM

  • Start Button
  • Emergency Button
  • Safety Switch
  • Magnetic Lock
  • Fog Machine
  • UVC Lights
  • LCD/LED

Dangxian Zha 16

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FIRST ROUND OF TESTING

17 Lauren Kieffer

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OPTIMIZATION

Lauren Kieffer 18

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SECOND ROUND OF TESTING

Lauren Kieffer 19

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H2O2 30 seconds

3 mg/L

UV lights 40 seconds

8 light bulbs

H2O2 30 seconds

3 mg/L

UV lights 40 seconds

8 light bulbs

H2O2 30 seconds

3 mg/L

UV lights 40 seconds

8 light bulbs

7 8 9 >10,000% 3000% 98% of 1 log

THIRD ROUND OF TESTING

Run 7: Hemostat Run 8:Tackle Toolbox Run 9: Notebook

Lauren Kieffer 20

Run Components Time Concentration Results

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FINAL PROTOTYPE

Robertson Beauchamp 21

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OBJECTIVES AND CONSTRAINTS

22 Robertson Beauchamp

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OBJECTIVES AND CONSTRAINTS

23 Robertson Beauchamp

80 lbs

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COST ANALYSIS

Robertson Beauchamp 24

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CLICK TO EDIT MASTER TITLE STYLE CONCLUSION

Through the testing and results, all but one of the requirements were met under the given constraints. Other systems would be implemented such as a humidity sensor and UVC light check. The size of the chamber is fully scalable and can be modified for smaller or larger applications allowing for more portability or larger items. Further optimization testing would result in a shorter cycle time.

25 Elliot Nation

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REFERENCES

  • Braz. J. Chem. Eng. vol.30 no.3 São Paulo July/Sept. 2013, “Inactivation of Bacillus atrophaeus spores in

healthcare waste by UVC light coupled with H2O2”, 2012 Koninklijke Philips Electronics N. V., TUVC T8, May 2013. Occupational Safety and Health Administration, General Industry 29 CFR 1910: Hazardous and Toxic Substances, U. S. Department of Labor Sridhar Rao PN, Sterilization and Disinfection, 2009. W.L. Gore, Portable Sanitization Chamber for Medical Manufacturing Use, 2013.

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QUESTIONS