Tank Installation and Maintenance - tankapedia.com · Tank Installation and Maintenance NISTM August 24, 2017 LORRI GRAINAWI DIRECTOR OF TECHNICAL SERVICES ... Tank Technology Storage

Tank Installation and Maintenance

NISTMAugust 24, 2017

LORRI GRA I NAWI

DI R EC TOR OF T ECHN ICAL SERVICES

ST I /SPFA

LGRA I NAWI@ST EELTANK.COM

847 - 550 - 3831

Trade association of steel fabricators

Advocacy

Informational resource

Standards & recommended practices

1914 City of Manassas, VA Water Storage Tank – Century Club

www.steeltank.com

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Quality Control Program

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Tank Construction

Options - monitoring, compartments & more

Equipment

Equipment

Monitoring tanks

Periodic samples from inside tank bottom

Sample from low end of tank

Wait at least two hours after fuel delivery

If sample looks hazy or waxy, water likely present

Use field detection kit to check for microbes and fuel specifications

Check Your Fuel

Reddish, scaly, gritty deposits: corrosion and/or silt in tank

Black or brown deposits: water contamination has degraded the fuel

Sludge build-up in tank bottom can be caused by the breakdown of the fuel itself.

Check Your Fuel

Contaminants like salts in water may:◦Degrade fuel chemical structure, yielding substances detrimental to system components

◦Cause fuel additives to leave fuel and enter water

How to remove water and contaminants from storage tanksMultipoint water pumping◦ Suction tube to bottom of tank

◦ All other available access points

◦ If suction is at lower end of tank, remove pump to facilitate water removal

Dispose of tank bottom water properly

How to remove water and contaminants from storage tanksFuel filtration/polishing◦ Remove water and contaminants without removing fuel

from tank

Non-entry tank cleaning◦ Usually requires emptying tank

◦ Pressure washing equipment lowered into tank

Physical entry tank cleaning◦ Used in cases of extreme contamination

◦ Contaminants physically scrubbed from tank walls

R111’s monthly inspection checklistInspect tanks monthly

Available free on STI’s website◦ Covers all inspection

recommendations

◦ Your record of tank inspection and maintenance

Standard for Inspection, Repair & Modification

of Shop-Fab Steel UST’s for Flammable Liquid Storage

STI SP131

P3 – 28 years old

Lorri GrainawiDirector of Technical ServicesSTI/SPFA

[email protected]

(847) 550-3831