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20.14.2.1
Plastic pallets shall be permitted to be stored in the following manner:
  1. Plastic pallets shall be permitted to be stored outside.
  2. Plastic pallets shall be permitted to be stored in a detached structure.
  3. Plastic pallets shall be permitted to be stored indoors where arranged and protected in accordance with the requirements of 20.14.2.2.
20.14.2.2 Protection Criteria for Plastic Pallets Stored Indoors
20.14.2.2.1
Plastic pallets having a demonstrated fire hazard that is equal to or less than idle wood pallets and is listed for such equivalency shall be permitted to be protected in accordance with 20.14.1.
20.14.2.2.2
When specific test data are available, the data shall take precedence in determining the required protection of idle plastic pallets.
20.14.2.2.3
Protection with ESFR sprinklers shall be in accordance with the requirements of Table 20.14.2.2.3.
Table 20.14.2.2.3 ESFR Sprinkler Protection for Indoor Storage of Idle Plastic Pallets
Type of Sprinkler (Orientation) Location of Storage Nominal K-Factor Maximum Storage Height Maximum Ceiling/Roof Height Minimum Operating Pressure
ft m ft m psi bar
ESFR (pendent) On floor or rack without solid shelves 14.0 (200) 25 7.6 30 9.1 50 3.4
25 7.6 32 10 60 4.1
16.8 (240) 25 7.6 30 9.1 35 2.4
25 7.6 32 10 42 2.9
35 11 40 12 52 3.6
20.14.2.2.4
Protection with spray sprinklers shall be in accordance with one of the scenarios in 20.14.2.2.4.1 through 20.14.2.2.4.3.
20.14.2.2.4.1
Where plastic pallets are stored in cutoff rooms, the following shall apply:
  1. The cutoff rooms shall have at least one exterior wall.
  2. The plastic pallet storage shall be separated from the remainder of the building by 3-hour-rated fire walls.
  3. The storage shall be protected by sprinklers designed to deliver 0.6 gpm/ft2 (24.5 mm/min) for the entire room or by high-expansion foam and sprinklers designed to deliver 0.3 gpm/ft2 (12.2 mm/min) for the entire room.
  4. The storage shall be piled no higher than 12 ft (3.7 m).
  5. Any steel columns shall be protected by 1-hour fireproofing or a sidewall sprinkler directed to one side of the column at the top or at the 15 ft (4.6 m) level, whichever is lower. Flow from these sprinklers shall be permitted to be omitted from the sprinkler system demand for hydraulic calculations.
20.14.2.2.4.2
Where plastic pallets are stored without cutoffs from other storage, the following shall apply:
  1. Maximum storage height of 10 ft (3.0 m)
  2. Maximum ceiling height of 30 ft (9.1 m)
  3. Sprinkler density 0.6 gpm/ft2 over 2000 ft2 (24.5 mm/min over 185 m2)
  4. Minimum sprinkler K-factor of 16.8 (240)
20.14.2.2.4.3
Plastic pallets shall have no impact on the required sprinkler protection when stored as follows:
  1. Storage shall be piled no higher than 4 ft (1.2 m).
  2. Sprinkler protection shall employ high temperature-rated sprinklers.
  3. Each pallet pile of no more than two stacks shall be separated from other pallet piles by at least 8 ft (2.4 m) of clear space or 25 ft (7.6 m) of stored commodity.
  4. Minimum ceiling design of OH2 shall be used.
20.14.2.3
Idle plastic pallets shall be stored only in racks where protected in accordance with the requirements of Table 20.14.2.2.3.
20.14.2.3.1
When specific test data and a product listing are available, the data shall take precedence in determining the required protection of idle plastic pallets stored in racks.

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