TRENTON Casing Filler Presentation - PowerPoint Presentation

Slide1

TRENTON Casing FillerPresentation

Presented by

Corrosion Control Products Company

www.PipelineCasings.comSlide2

Corrosion & Casing Fillers

Casing filling has become an important option in the corrosion protection industry.

Water

or water vapor is present in most pipeline casings, making possible galvanic corrosion of the carrier pipe

.

A “water short” can occur through the water in the casing, allowing

cathodic

current to flow through the water and onto the pipe in the casing.

Under these circumstances,

cathodic

current is increased and the casing is sacrificed as well.

Casing filler prevents this from occurring

.

In some instances the pipe may be shorted to the casing through a direct metal-to-metal contact and filling the casing might correct this condition on some occasions.

In any case, it is difficult, if not impossible, to

cathodically

protect pipe in casing, so that filling of the casing will protect the pipe from corrosion regardless of the circumstances.

When the casing is filled, corrosion

that might have been occurring is prevented,

cathodic

current to protect the pipeline in the casing may be reduced, and the sacrifice of the casing by

cathodic

current flowing through casing water is

halted.

Hot, liquefied casing filler material can, in some instances, penetrate corroded, scaly pipe to allow a film of casing filler material to coat the shorted contact surfaces of the pipe and casing.Slide3

TRENTON Fill-Coat #1

TRENTON Fill-Coat #1 Casing Filler is a full-service, hot-installed casing filler system for installation into pipeline casings.

Fill-Coat #1 is a petroleum-based corrosion preventative compound used to fill the annulus of casings.

Fill-Coat #1 is delivered to the jobsite via Trenton’s 3,000 and 6,000 gallon tanker trucks that are heated and insulated.

Fill-Coat #1 prevents corrosion by displacing water that is present in the casing and by preventing water from re-entering through leaks in the seals or through condensation.

Fill-Coat #1 is non-hazardous and environmentally friendly.

Installation of Fill-Coat #1 Casing Filler is an acceptable “other measure” under the code requirements of the Department of Transportation. (Title 49 of CFR, Part 192, Subpart I, Section 192.467, Paragraph C)

Fill-Coat #1 Casing Filler provides protection against corrosion for pipes in casings and Trenton provides the service of installing the material.Slide4

Vent Placements and Configurations

Trenton Fill-Coat #1 Casing Filler is installed as a heated liquid through one casing vent until the casing void is filled and the filler material discharges out of the other vent.

A minimum of two vent pipes are required, one at each end of the casing. Keep in mind that vehicle access to both vents is necessary for best filling results.

2” to 4” diameter vents are required with at least 1-1/2” diameter holes cut into the casing.

Trenton recommends that a vent be attached on top of the high end of the casing

and on the bottom of the low end of the casing.

The top vent should be positioned at the 12 o’clock position, and the bottom vent should be positioned at the 6 o’clock position.

Whenever possible, place the vents approximately 12” from the ends of the casing.

Special attention should be paid to the placement of the casing spacers and end seals in order to not obstruct the vent holes.Slide5

Preparation for Existing Casings

Verify casing length, pipe wall thickness, average coating thickness, and pipe and casing diameters.

Remove and inspect the end seals. Inadequate end seals are a common cause of leaks inside casings. If necessary, replace with Link-Seal® Modular Seals when the carrier pipe is centered or Trenton Seal-Wrap End Seals when the carrier pipe is not centered.

If necessary, flush the casing to remove debris.

The casing end seals must be subjected to a 5 psi regulated air test. Close one vent and pressure the other to 5 psi. Hold for 15 minutes and remove pressure. If the seals fail the pressure test, replace or modify them.

As a safety precaution and to aid in the end seal’s proper performance, backfill the excavations around the ends of the casing.Slide6

Preparation for New Casings

Verify casing length, pipe wall thickness, average coating thickness, and pipe and casing diameters.

Install Link-Seal® Modular Seals when the carrier pipe is centered

or Trenton Seal-Wrap End Seals when the carrier pipe is not centered.

The casing end seals must be subjected to a 5 psi regulated air pressure test. Close one vent and pressure the other to 5 psi. Hold for 15 minutes and remove pressure. If the seals fail the pressure test, replace or modify them.

As a safety precaution and to aid in the end seal’s proper performance, backfill the excavations around the ends of the casing.Slide7

Suggested Vent Pipe Sizes

2” – for up to 1,000 Gallons of Filler

3” – 1,001 to 2,500 Gallons of Filler

4” – for over 2,500 Gallons of FillerSlide8

The candy canes should be removed on both casing vents prior to the scheduled fill date.

Install caps over the vent pipes to prevent water from entering the casing until the scheduled fill date.

The contractor must test the casing end seal integrity with the required 5 psi air test. If the end seals pass the air test, you can backfill the ends of the casing and schedule the fill.Slide9

On the scheduled fill date, Trenton’s crew arrives in their50 foot heated and insulated tanker. The tanker is positioned near the bottom casing vent on the fill side.Slide10

Using an air compressor, Trenton technicians

perform an

air flow

check by blowing air across the casing from the top vent to the bottom vent at a maximum pressure of 5 psi, to

ensure there is adequate air flow between the

vents.

This process will also remove

any water that might be present in the casing.Slide11

Trenton technicians check air flow through the opposite vent.

If there is adequate air flow and there are no obstructions, the casing is ready to be filled.Slide12

Prior to the installation of the casing filler, Trenton technicians pour

Pre-Con into

the bottom vent at a ratio of 1 gallon per 200 gallons of filler.

Pre-Con corrosion inhibitor added to the casing neutralizes water in the casing and is part of Trenton’s patented casing filling method.

(Patent #4,469,469.)Slide13

Trenton technicians attach a compression fitting to the bottom vent on the fill side.Slide14

Trenton technicians attach a hose to the compression fitting and Fill-Coat #1 is ready to be pumped into the casing.Slide15

A meter registers the gallons installed and the progress of the fill while a pressure gauge monitors the fill pressure.

Trenton technicians stay in constant communication with each other throughout the fill process.Slide16

Fill-Coat #1 continues to be installed until the space between the casing and the carrier pipe is filled.

Looking through the top casing vent, a Trenton technician waits for the casing filler to appear.Slide17

The fill process is normally completed when the filler is discharged out of the top vent.After

being pumped into the casing, the casing filler

cools and becomes a firm gel.Slide18

The

jobsite is cleaned up and all surplus material is returned to Trenton’s facility.

Once

the fill is complete,

the

candy canes can be

welded

back on the casing

vents.Slide19

Visit our Website for More Information!

www.PipelineCasings.com

CORROSION CONTROL PRODUCTS COMPANY

can supply you

with

Trenton

Fill-Coat #1

Casing Filler and

Pipeline Seal and Insulator, Inc. Isolating Casing Spacers,

Link-Seals and End Seals for your installation requirements.

Thank You!