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// CODE SNIPPET

3404.2.13 Out-Of-Service Tanks

NYC Fire Code 2014 > 34 Flammable and Combustible Liquids > 3404 Storage > 3404.2 Tank Storage > 3404.2.13 Out-Of-Service Tanks
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Tanks taken out of service shall comply with the requirements of FC 3404.2.13.1 through 3404.2.13.2.3 and API 1604. Tanks taken out of service shall be removed, sealed in place or safeguarded by a certificate of license holder or a plumber in accordance with the rules.

Exceptions:
  1. Tanks within operating facilities at bulk plants and terminals.
  2. Tanks connected to fuel oil burning equipment that is used seasonally or as one of the fuels in dual-fueled equipment.
  3. Tanks that are used for seasonal storage or standby storage.

3404.2.13.1 Underground Tanks

Underground tanks taken out of service shall comply with the requirements of FC 3404.2.13.1.1 through 3404.2.13.1.3.

3404.2.13.1.1 Fuel Conversions

A fuel oil storage tank removed from service by reason of conversion of the heating system to an alternative fuel or power source, or other replacement of the tank, shall be sealed or removed from the premises in compliance with FC3404.2.13.1.3 at the time of conversion or replacement.

3404.2.13.1.2 Out of Service for 30 Days

Except as otherwise provided in FC3404.2.13.1.1, underground tanks not used for a period of 30 calendar days or more shall be removed from the premises, or sealed in place in compliance with the requirements of FC3404.2.13.1.3, or safeguarded in compliance with the following requirements:
  1. Flammable or combustible liquids shall be removed from the tank and connecting piping.
  2. The tank and connecting piping shall be rendered free of flammable and combustible vapors using an inert gas.
  3. Except for any active fire extinguishing system piping, the tank and connecting piping, including fill line, gauge opening, vapor return and pump connection, shall be capped or plugged and secured from tampering and the fill connection covered with concrete.
  4. Vent lines shall remain open and be maintained in accordance with FC 3404.2.7.3 and 3404.2.7.4.

3404.2.13.1.3 Out of Service for 1 Year

Except as otherwise provided in FC3404.2.13.1.1, underground tanks that have been out of service for a period of 1 year or more shall be removed from the premises or sealed in place in compliance with the following requirements:
  1. Flammable and combustible liquids shall be removed from the tank and connected piping.
  2. The tank and connecting piping shall be rendered free of flammable and combustible vapors, using an inert gas.
  3. The tank shall be disconnected from system piping and removed from the premises, or filled completely with an approved, inert solid material, and sealed in place.
  4. All system piping, including fire extinguishing system lines, fill line, gauge opening and vapor return and pump connection, shall be disconnected from the tank and removed from the premises, or sealed in place and secured from tampering. Unless other methods are approved, the fill connection shall be cut from the fill piping and removed; the fill piping shall be capped or plugged; and the fill box filled with concrete.
  5. Tank openings shall be capped and plugged, leaving a 0.125-inch to 0.25-inch-diameter (3.2-mm to 6.4-mm-diameter) opening for pressure equalization, when tanks are removed from the premises.

3404.2.13.2 Aboveground Tanks

Aboveground tanks taken out of service shall comply with the requirements of FC 3404.2.13.2.1 through 3404.2.13.2.3.

3404.2.13.2.1 Fuel Conversions

A fuel oil storage tank removed from service by reason of conversion of the heating system to an alternative fuel or power source, or other replacement of the tank, shall be sealed or removed from the premises in compliance with FC3404.2.13.2.3 at the time of conversion or replacement.

3404.2.13.2.2 Out of Service for 30 Days

Except as otherwise provided in FC3404.2.13.2.1, aboveground tanks not used for a period of 30 calendar days or more shall be removed from the premises or sealed in place in compliance with the requirements of FC3404.2.13.2.3, or safeguarded in compliance with the following requirements:
  1. Tank and connecting piping shall be safeguarded in accordance with FC3404.2.13.1.2.
  2. The tank shall be protected from flotation in accordance with good engineering practice.

3404.2.13.2.3 Out of Service for 1 Year

Except as otherwise provided in FC3404.2.13.2.1, aboveground tanks that have been out of service for a period of 1 year or more shall be removed from the premises or sealed in place in compliance with the following requirements:
  1. Flammable and combustible liquids shall be removed from the tank and connected piping.
  2. The tank and connecting piping shall be rendered free of flammable and combustible vapors using an inert gas.
  3. The tank shall be disconnected from system piping and removed from the premises, or filled completely with an approved, inert solid material, and sealed in place.
  4. All system piping, including fire extinguishing system lines, fill line, gauge opening, and vapor return and pump connection, shall be disconnected from the tank and removed from the premises, or sealed in place and secured from tampering. Unless other methods are approved, the fill connection shall be cut from the fill piping and removed; the fill piping shall be capped or plugged; and the spill containment box shall be removed.
  5. Tank openings shall be capped and plugged, leaving a 0.125-inch to 0.25-inch-diameter (3.2-mm to 6.4-mm-diameter) opening for pressure equalization, when tanks are removed from the premises.
  6. The tank shall be protected from flotation in accordance with good engineering practice.
  7. The tank shall be stenciled with the date that it was sealed in place.

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