Hazardous substances

This Safe Work Procedure (SWP) is to be used when handling hazardous substances on the farm. Examples of these include fuels, pesticides, herbicides, gases and agrichemicals.

Risks

Hazardous substances may present the following risks:

  • Fire or explosion
  • Health effects, including:
    • Dermatitis
    • Burns
    • Respiratory illness
  • Environmental damage

Personal Protective Equipment (PPE)

Appropriate Personal Protective Equipment (PPE) must be worn and used as specified in the relevant Safety Data Sheet (SDS).

Minimum Operator Requirements

All workers handling chemicals must be trained appropriately.

Minimum competency requirements may apply depending on the classification and quantity of the hazardous substance and may include:

  • Qualified Person (EPA/Growsafe)
  • Certified Handler compliance certificate
  • Controlled Substance Licence

For guidance on hazardous substance requirements, visit:

Communication

When working on the farm, refer to the Lone Worker Safe Work Procedure where applicable.

Equipment and Documentation

The following equipment and documentation must be available:

  • Hazardous substances inventory
  • Safety Data Sheets (SDS)
  • Spill kit (as specified by the SDS)
  • Fire extinguisher (as specified by the SDS)
  • Appropriate PPE
  • Chemical use and application records
  • Emergency Response Card
  • First aid kit
  • Safety signage
  • Site map

General Procedure

Before Use

  1. Record all hazardous substances in an inventory using the Hazardous Substances Calculator:
    • https://hazardoussubstances.govt.nz/calculator
  2. Read and follow the product Safety Data Sheet (SDS).
  3. Follow all requirements and precautions outlined in the SDS.
  4. Ensure application equipment is clean, maintained, and functioning correctly.

During Use

  • Do not eat, drink, or smoke while handling fuels or chemicals.
  • Avoid opening, pouring, or mixing chemicals in enclosed areas.
  • Ensure there is adequate ventilation when handling chemicals.
  • Do not use products during strong wind conditions that could cause spray drift.
  • Keep people and animals away from contaminated equipment and application areas.

Spill Response

In the event of a major spill, follow the Emergency Response Card and contact Fire and Emergency New Zealand if required.

In the event of a minor spill:

  • Keep people away until the area is safe.
  • Wear the required PPE.
  • Stop the spill at its source if it is safe to do so.
  • Prevent the spill from spreading.
  • Clean up the spill using spill kit materials.
  • Dispose of waste materials in accordance with the SDS.
  • Clean safety equipment after use.

After Use

  • Place all chemicals in their correct storage areas after use.
  • Wash hands, arms, and face thoroughly with cold water after handling chemicals.
  • Complete any required records or documentation.

References

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