Safe Operation of Storage Tanks

8/8/2019 Safe Operation of Storage Tanks

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Safety Talk 3

Safe Operation of Storage Tanks:Temperature and Pressure


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Types of storage tanks


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Ruptured roof / shell seam of fuel oiltank due to water explosion


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Temperature indicator

3 feet from bottom oftank shows temperatureat the boiling pointof water after the incident


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Usual sources of water in tankage


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Drain off water frequently

Do not leave job !


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Unexpected flammable / explosionmixture in vapour space of cone roof tank


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The effect on flash point of small additions ofpremium grade motor gasoline to gas oil (f.p.156)


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Avoid landing floating roof on its legsduring normal operations


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Lessons Learned (1)

Up-to-date operating instructions

Tanks properly marked and labelled

Inlets / outlets and drain clearly marked

Keep bund drain valves closed Accurate operator logs

Take charge of change

Never drain water bottom unattended Do not take floating roofs off float

Monitor storage tank temperature


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Lessons Learned (2)

Test space above internal floating deck forflammables

Do not expose heating coils

Keep tank contents


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Dipping / sampling

Avoid dip / sampling tanks with flammable atmosphere / mist above oil level Do not dip / sample within 30 minutes of stopping pump

(low conductivity product not dosed with anti-static

Carry sample cans / bottles in baskets / carriers

Sample containers / dip tape plummets to be non-sparking (brass)

Natural fibre ropes to be used for sampling

Wear proper PPE (non-slip footwear / goggles / gloves)

If tank contents toxic (H2S / benzene) wear BA

Make sure steel dip tape is in contact with metal edge of dip hole

Keep dip hole, sampling hatch covers closed

Do not dip during electrical storms / heavy rain / hail


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Filling / jet mixing

Keep filling velocities

Safe Operation of Storage Tanks

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