Work Instruction
Decontaminate wool shed
Who’s responsible?
Treatment
When to use
Follow this work instruction to decontaminate a wool shed.
Before you begin
Ensure:

you have the required equipment and supplies

the site and buildings have been prepared for decontamination (see Decontamination site
preparation work instruction).
Work instruction
Shearing equipment
Step
Action
1
Hand wipe all fixed shearing equipment with approved disinfectant solution.
2
Dismantle all other shearing equipment and soak in disinfectant for 10 minutes.
3
Dry equipment using a cotton towel or if possible place in direct sunlight.
Below floor level
Step
Action
1
Check with the Treatment Manager in regards to access to the below floor level.
2
Consult with the Key Decision Maker and confirm when the wool shed was last used:
If…
then…
not used within the
previous two weeks
used within the previous
two weeks
use the mist spray to saturate below floor level with
approved disinfectant solution.
© Ministry for Primary Industries

foam the below floor level area

remove a minimum of 150mm of loose material

stack and spray this in preparation for burial

re-foam the ground after the 150mm loose
material has been removed (ensure all wooden
support timbers and ground are foamed).
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Shearing stand
Step
Action
1
Foam the shearing stand floor, beginning at the board area in front of the holding pens.
2
Working from bottom to top, foam 3 metres up the walls.
3
Saturate with mist spray any remaining walls above 3 metres, and the ceilings.
4
Check with Treatment Manager before proceeding.
5
Clean floor and lower half of walls using water blaster.
6
Check with Treatment Manager before proceeding.
7
Re-disinfect all areas and surfaces by saturate mist spraying.
8
Check with Treatment Manager for clearance.
Holding pens and internal races
Step
Action
1
Foam the floor grating of all holding pens and races.
2
Working from bottom to top, foam 3 metres up the walls.
3
Saturate with mist spray any remaining walls above 3 metres, and the ceilings.
4
Check with Treatment Manager before proceeding.
5
6
Clean entire area using water blaster to remove bulk waste. Pay attention to areas between
gratings.
Remove all loose/hard material from wooden gratings with a spade and trowel.
7
Dispose of waste material as advised by your Treatment Manager.
8
Give entire grating area a final rinse to remove all waste.
9
Check with Treatment Manager before proceeding.
10
Re-disinfect all areas and surfaces by saturate mist spraying.
11
Check with Treatment Manager for clearance.
Yards and external races
Step
Action
1
If there are bulk or large volumes of contaminated materials request the Treatment Manager
organise a front end loader to remove all contaminated materials from the external or internal
races.
Foam ground area within yards, fences and pens.
2
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3
Working from bottom to top, foam 3 metres up any walls or support timbers.
4
Saturate with mist spray the ceiling and any remaining walls or support timbers above 3
metres.
Ensure all sides of gates and timber are foamed, pay particular attention to high contact
areas.
Check with Treatment Manager before proceeding.
5
6
7
8
Clean entire area using water blaster to remove bulk waste. Pay attention to areas between
gratings.
Remove all contaminated material using a front end loader, if required.
9
Dispose of contaminated material as advised by your Treatment Manager.
10
Give entire area a final rinse to remove all waste.
11
Check with Treatment Manager before proceeding.
12
Re-disinfect all areas and surfaces by saturate mist spraying.
13
Check with Treatment Manager for clearance.
Ancillary rooms (if any)
Step
Action
1
Foam floors within ancillary rooms.
2
Working from bottom to top, foam 3 metres up the walls.
3
Saturate with mist spray any remaining walls above 3 metres, and the ceilings.
4
Check with Treatment Manager before proceeding.
5
Clean floor and lower half of walls using water blaster.
6
Check with Treatment Manager before proceeding.
7
Re-disinfect by saturate mist spraying of all areas and surfaces.
8
Check with Treatment Manager for clearance.
Site clearance
Step
1
Action
On completion of wool shed decontamination, spray area around buildings and yards to a
minimum of 2 metres out.
© Ministry for Primary Industries
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