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Last Updated: 2010-01-11

Procedures for Fruit and Crop Ripening

Permit Holder Guideline #20

PERMIT TITLE: Procedures for Fruit and Crop Ripening

CODE SECTION: (Virginia Statewide Fire Prevention Code) 1601.2

FEE: $75.00 (Check payable to the City of Richmond)

SCOPE: Need permit when ethylene gas is introduced into a room to promote the ripening of fruits, vegetables and other crops.

EXCEPTION: Mixtures of ethylene and one or more inert gases in concentrations which prevent the gas from reaching greater than 25 percent of the lower explosive limit (LEL) when released to the atmosphere.

PERMIT EXPIRATION: ONE (1) year from date issued.

REQUIREMENTS: Permit holder agrees to abide by the Virginia Statewide Fire Prevention Code and any special stipulations noted on permit, as well as the following:

  1. Approved warning signs indication the danger involved and necessary precautions shall be posted on all doors and entrances to the premises.
  2. Ethylene gas shall be discharged only into approved rooms or enclosures designed and constructed for this purpose.
  3. Valves controlling discharge of ethylene shall provide positive and fail-closed control of flow and shall be set to limit the concentration of gas in air below 1,000 parts per million (ppm).
  4. Sources of ignition shall be controlled or protected.
  5. Electrical wiring and equipment, including lighting fixtures, shall be approved for use in Class I, Division 2, Group C hazardous (classified) locations.
  6. Containers, piping and equipment used to dispense ethylene shall be bonded and grounded to prevent the discharge of static sparks or arcs.
  7. Lighting shall be by approved electric lamps or fixtures only.
  8. Heating shall be by indirect means utilizing low-pressure steam, hot water or warm air.

    Exception: Electric or fuel-fire heaters approved for use in hazardous (classified) locations, installed and operated per the ICC Electrical Code, the International Mechanical Code, or the International Fuel Gas Code.
  9. Empty boxes, cartons, pallets and other combustible waste shall be removed from ripening rooms or enclosures and disposed of at regular intervals.

Contact Information:

Fire Department
City of Richmond
201 E. Franklin St.
Richmond, VA
23219 USA
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Phone: (804)646-2500

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