Solid Guid Pole

The Slotted Guidepole AgreementThe Slotted Guidepole Agreement

Rob FerryRob Ferrythe TGB partnershipthe TGB partnershipHillsborough, NCHillsborough, [email protected]@mindspring.com

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The STERPPThe STERPP

•• StorageStorage•• TankTank•• EmissionEmission•• ReductionReduction•• PartnershipPartnership•• ProgramProgram

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Guidepole Through a Floating RoofGuidepole Through a Floating Roof

Floating roof deckFloating roof deck

GuidepoleGuidepole

GuidepoleGuidepoleDeck FittingDeck Fitting

GuidepoleGuidepole

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Guidepole Deck FittingGuidepole Deck FittingPole wiperPole wiperGuidepoleGuidepole

Deck cover gasketDeck cover gasket

Roller assemblyRoller assembly(optional)(optional)

FloatingFloatingroofroofdeckdeck

Deck coverDeck cover(sliding(sliding----shownshowncutaway)cutaway)

RimRim

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What Controls are Acceptable?What Controls are Acceptable?1. Pole Float (w/cover gasket/pole wiper).1. Pole Float (w/cover gasket/pole wiper).2. Alternate Technology Equal to Option 1.2. Alternate Technology Equal to Option 1.3. Pole Sleeve (w/cover gasket/pole wiper).3. Pole Sleeve (w/cover gasket/pole wiper).4. Internal Sleeve (blocking all slots).4. Internal Sleeve (blocking all slots).5. Solid Guidepole (no slots).5. Solid Guidepole (no slots).6. Flexible Enclosure (‘slinky’).6. Flexible Enclosure (‘slinky’).7. Covered EFRT (no add7. Covered EFRT (no add--on controls).on controls).8. Removal from (regulated8. Removal from (regulated mat’lmat’l) Service.) Service.

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STERPP Option 1: Pole FloatSTERPP Option 1: Pole FloatSlotted guidepoleSlotted guidepole

Pole wiperPole wiper

Deck coverDeck cover(sliding)(sliding)

RimRim

Deck coverDeck covergasketgasket

OpeningOpeningthroughthroughthe deckthe deck

Bottom ofBottom ofthe floatthe float

LiquidLiquidsurfacesurface

Pole floatPole float

Wiper/seal onWiper/seal onpole float rimpole float rim

Floating roofFloating roofdeckdeck

RimRim

Dotted lines under the sliding cover showDotted lines under the sliding cover showan alternate location for the pole wiper.an alternate location for the pole wiper.

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STERPP Option 2: AlternatesSTERPP Option 2: Alternates

•• Any slotted guidepole control device with Any slotted guidepole control device with emission factor equal to Option 1 or lower.emission factor equal to Option 1 or lower.

•• Any combination of deck fitting controls Any combination of deck fitting controls with equal or lower combined emission with equal or lower combined emission factor as if subject to Kb and STERPP.factor as if subject to Kb and STERPP.

•• API Test Methods are an accepted basis for API Test Methods are an accepted basis for demonstrating equivalency.demonstrating equivalency.

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Slotted guidepoleSlotted guidepole



Deck coverDeck covergasketgasket



Pole sleevePole sleeveFloating roofFloating roof

deckdeck

RimRim

Dotted lines show an alternate locationDotted lines show an alternate locationfor attachment of the pole sleeve.for attachment of the pole sleeve.

STERPP Option 3: Pole SleeveSTERPP Option 3: Pole Sleeve

Bottom ofBottom ofthe sleevethe sleeve

RimRim

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Slotted guidepoleSlotted guidepole



Cover (hatch) at theCover (hatch) at thetop of the poletop of the pole

RimRimDeck coverDeck cover

gasketgasket


Cover (hatch) at theCover (hatch) at thetop of the guidepoletop of the guidepole

(shown partially open)(shown partially open)


Internal sleeveInternal sleeve


RimRim

The internal sleeve extends the entireThe internal sleeve extends the entirelength of the guidepole, therebylength of the guidepole, therebyblocking flow through the slots.blocking flow through the slots.

STERPP Option 4: Internal SleeveSTERPP Option 4: Internal Sleeve

Internal sleeveInternal sleeve

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STERPP Option 5: Solid GuidepoleSTERPP Option 5: Solid Guidepole

BottomBottomof theof theguidepoleguidepole

Liquid surfaceLiquid surfaceat the lowestat the lowestoperating leveloperating level

Solid guidepoleSolid guidepole(unslotted)(unslotted)

Slots, if any, onlySlots, if any, onlylocated belowlocated below

the liquid levelthe liquid level

No slots above theNo slots above theliquid level for vaporsliquid level for vaporsto enter the guidepoleto enter the guidepole

BottomBottomof theof thetanktank

Solid guidepoleSolid guidepole means ameans aguidepole or gaugepoleguidepole or gaugepolethat does not have slotsthat does not have slotsor holes through the wallor holes through the wallof the pole at or above theof the pole at or above thelevel of the floating rooflevel of the floating roofwhen it is at its lowestwhen it is at its lowestoperating level.operating level.



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STERPP Option 6: Flexible EnclosureSTERPP Option 6: Flexible Enclosure



Flexible enclosureFlexible enclosure


RimRim



Flexible enclosure:Flexible enclosure:A flexible device that completelyA flexible device that completelyencloses the slotted guidepole andencloses the slotted guidepole andeliminates the hydrocarbon vaporeliminates the hydrocarbon vaporemission pathway from inside theemission pathway from inside thetank through the guidepole slotstank through the guidepole slotsto the outside air.to the outside air.

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STERPP Option 7: Covered EFRTSTERPP Option 7: Covered EFRT

The tank was built as an external floatingThe tank was built as an external floating--roof tank,roof tank,and was subsequently covered with a fixed roof.and was subsequently covered with a fixed roof.

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STERPP Option 8:STERPP Option 8:Removal from ServiceRemoval from Service

•• Rather than upgrade the slotted guidepole; Rather than upgrade the slotted guidepole; remove the tank from regulatedremove the tank from regulated mat’lmat’l service.service.–– The tank may still be used, but only to store The tank may still be used, but only to store

liquid stocks with true vapor pressure < the liquid stocks with true vapor pressure < the Ka/Kb cutoffs.Ka/Kb cutoffs.

•• ‘Surrender’ (revise) operating permits to ‘Surrender’ (revise) operating permits to show that this tank is not to store regulated show that this tank is not to store regulated material.material.

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To Get a Copy of the FR NoticeTo Get a Copy of the FR Notice

•• Download the Final Notice of the STERPP:Download the Final Notice of the STERPP:–– www.access.www.access.gpogpo..govgov//susu_docs/_docs/fedregfedreg/a000413c./a000413c.

htmlhtml–– Listing April 13, 2000 Federal Register NoticesListing April 13, 2000 Federal Register Notices–– Scroll to Environmental Protection AgencyScroll to Environmental Protection Agency–– Find the STERPP under NoticesFind the STERPP under Notices

•• 65 FR 19891 (April 13, 2000)65 FR 19891 (April 13, 2000)

Documents

Solid Guid Pole