Summer Test ProgramCarbon Analysis

MeadWestvaco CorporationCarbon Department

Covington, VA 24426

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Test CasesBoat

ManufacturerType Fuel Tank Volume Canister Volume Test Date(s)

Four Winns 17’ Open Bow 24 gallon 1.0 liter 8/25

Four Winns 18’ Open Bow 32 gallon 1.0 liter

Crestliner 17’ Open Boat 24 gallon 1.0 liter 9/20

Crestliner 18’ Open Boat 31 gallon 1.0 liter

Crestliner 23’ Pontoon 25 gallon 1.0 liter 9/20

Crestliner 23’ Pontoon 25 gallon 1.0 liter

Four Winns 19’ Open Bow 50 gallon 1.5 liter 8/25

Four Winns 21’ Open Bow 50 gallon 1.5 liter

Four Winns 27’ Cruiser 85 gallon 2.5 liter

Century 26’ Sportfisherman 150 gallon 4.0 liter 8/16

Century 26’ Offshore 150 gallon 4.0 liter

Grady White 23’ Offshore 150 gallon 4.0 liter 9/16

Grady White 30’ Offshore (2) 150 gallon 4.0 liter 8/4 & 9/15

Century 29’ Sportfisherman 300 gallon (2) 3.5 liter 9/7

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BWC Procedure

Load Canister with100% Butane at 600 cc/min to50% Breakthrough

Vacuum PurgeCanister at 10 lpm for 300 bed volumes

Load Canister with100% Butane at 600 cc/min to50% Breakthrough

Conditions Canister to

ReproducibleState

Purges butaneAnd gasolineFrom Canister

EstablishesCapacity of

Canister underStandard conditions

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BWC Apparatus

ButaneCylinder

VacuumPump

PurgeFlow meter

Butane Feed

Flow meter

Butane VentFlow meter

VentBubble Meter

TempMeter

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BWC Test Results

Net BWC Correlation with Canister Volume

05

101520253035404550

0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8Canister Volume (liters)

Nor

mal

ized

BW

C (g

ram

s/lit

er)

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Repeat Testing at Grady WhiteGrady White Bimini 4.0 Liter On-Site Butane Test Results 8/4/2005 and 9/15/05

0

50

100

150

200

250

300

350

400

450

500

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170

Time (min)

Dis

char

ge F

low

Rat

e (m

L/m

in)

Initial Load Final Load

Canister Volume 4.0 LCarbon Type SeaGuard™ 3 mmNet BWC 115 gramsNormalized BWC 28.7 gramsButane Feed (100%) 600 mL/minPurge 300 bv at 10 lpm

1 12 2

No degradation in capacity was identified

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Summary Testing showed no degradation in capacity due to

moisture or liquid gasoline exposure Regenerable carbon capacity was maintained

throughout test period Carbon capacity was unaffected by physical

stresses associated with marine use Carbon canisters did not affect performance of

boats

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Future Work Carbon canisters will be removed from boats and

tested for particle size distribution, heel analysis, and capacity

Two canisters will remain on boats for long-term testing