Mike FuquaColby JanischRyan KobosSteve OpsitnickJoey Tordella

SE-6000 OutdoorSafety Shower Shell

Sponsor Goal / Project Scope

Improve existing SE-6000 safety shower to be more appealing to market

Reduce costs and labor

Update/improve current design of SE-6000 Outdoor Safety Shower

Focus on improving shell and seal

Improve insulation

18 x 3’’ ID PVC pieces Long assembly time Difficult maintenance Custom made for

various options

Current Shell Design

Wants and Requirements

Speakman’s Requirements– Easy Access Shell– No painting– Modular– Weatherproof– Retain durability– Minimize cost

Customer Wants

Final Rate ofRanking Importance

12345678910

2.32.10.8

25.617.416.9

paintminimal piecesnon hazardous

easy accessaesthetics

16.39.95.23.5

costdurability

multiple optionsease of assembly

Wants

weather proofing

Key Metrics

Metrics % Target value1 Cost 14.32 $2502 Water tightness 12.16 1.03 UV resistant 11.59 1.04 Temperature range 11.51 -50 to 150 F5 Assembly time 11.47 15 min6 Thermal conductivity 10.59 = current7 Number of options 7.73 5.08 Number of pieces 7.58 6.0

Rate ofImportance

Benchmarks

ABS plastic shell Vacuum molded Clamshell seal

Pros– Easy assembly– Less costly than PVC

Cons– Clamshell seal– Not watertight

Forming Methods

Structural Foam– Very precise– High stiffness ratio– Very expensive

molding and tooling costs

Vacuum Forming– Accurate– Low cost– All necessary

properties are possible

Sealing and Fastening Methods

Gaskets– K profile EPDM– P profile EPDM– High density PVC foam– EPDM foam rubber– Polyurethane foam

rubber– EPDM, Neoprene, and

SBR foam

Fasteners– Latches– Slide Pins– Zip ties– Spring loaded clamps– Ratcheting ties– Compression pins– Bolt and Fastener

Concept Selection

Vacuum formed outer casing ABS plastic Internal gasket seal Reusable nylon rivets Pre-slit Armacell pipe

insulation

Incorporate all options into shell

Use rounded edges to avoid sharp corners

Part mating

Exterior Shell Design

Sealing Testing Gaskets and grommets

tested for water tightness under 4.5 GPM for 30 minutes

Gasket MaterialCost

(per foot) Width Initial ThicknessCompressed

ThicknessWater

Resistance NotesK-Profile EPDM $0.410 7/32" 0.125" 0.100" Passed rated to -40FP-Profile EPDM $0.410 7/32" 0.219" 0.080" Passed rated to -40FHigh Density PVC Foam $0.074 1/4" 0.188" 0.061" Passed rating not notedPolyurethane Foam Bubber $0.075 3/4" 0.125" 0.046" Failed open and closed cellEPDM Foam Rubber $0.288 3/4" 0.125" 0.068" Passed rated to -40FEPDM and Neoprene and SBR $0.146 3/4" 0.125" 0.074" Passed did not recover from compression

Water Sealant Testing

Sealing Selection

¾” wide by 1/8” thick EPDM Closed Cell Foam Strip– Temperature rating -90o to 257oF– Self adhesive backing: Temperature rating

-40o to 250oF

Rubber Lip Seal Grommet

Prototype

• Cheaper than existing shell by over $160/unit

ABS Shell

EPDM Gasket

Foam InsulationHeat Tracing Tape

Internal Pipe

3.25”

Prototype vs. Competition

Similar shell design New innovative sealing

method

New fastening method

Better sealing of protrusions

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Fix problems with dimensions Test in outdoor environment Prepare assembly instructions to

decrease factory installation issues and reduce production time

Develop shipment method Begin production in spring 2006

Path Forward

Questions

?THE MOON

RULZ #1