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Container fumigation-application in import and export quarantine fumigation

This site2017-04-07 18:37:58

Container Fumigation --- Application in Import and Export Quarantine Fumigation

I. scope of application
Applicable to fumigation treatment of entry and exit plant products, wooden products and wooden packaging and empty containers, and waste items in containers except for fresh goods such as fruits and vegetables.

II. Medicinal bromide. Sulfuryl fluoride. Phosphine. Ethylene oxide. The quality meets national standards, and the three certificates (business license, production license, pesticide registration certificate) are complete.

3. Equipment
1. Gasifier: The outlet of the gasifier is not lower than 20 ℃.
2. Gas leak detection and concentration detection equipment: thermal conductivity type concentration detector. Trace gas concentration detector. Halogen leak detector. Phosphine detection tube.
3. Other equipment: medicine tray or medicine bag. Drug injection tube. Special injection pin. Cylinder mouthpiece. Toximeter tube. Thermometer (thermometer). Calculator. Scale. Adhesive tape. Scissors and gas mask etc.

4. Fumigation places:
The distance from the living and working area is not less than 50m. Flat ground with a distance of not less than 50cm. The container should be placed on the ground in a single layer. The container cannot be moved during fumigation. Fumigation should be carried out under the condition that the temperature in the closed space of fumigation is higher than 5 ° C.

V. Preparations:
1. Develop a fumigation plan: cargo conditions; weather conditions; atmospheric temperature; consult relevant technical requirements. If fumigation places or types of goods are not suitable for fumigation, fumigation should be rejected.
2. Inspection of medicaments and equipment: medicaments and equipment, instruments and equipment, gas masks
3. Check the packing of the goods: determine whether there are obvious damages or leaks in the box and whether it is suitable for fumigation; whether there is airtight packing material for the goods in the box.
4. Measure the temperature and determine the fumigation plan: Measure the internal and atmospheric temperature of the cargo. If the air temperature is within 5 ℃ lower than the internal temperature of the cargo or higher than the internal temperature of the cargo, the internal temperature of the cargo shall be used as the fumigation temperature; Determine the dose and closed fumigation time.
5. Sealed container:
First, use adhesive tape to seal the front and rear vent holes of the container, and then check whether the sealing strip of the container door is intact, and whether the four corners and the middle seam of the door are tightly sealed; if not, apply adhesive tape to seal.
6. Insert the special pin for container administration:
Insert the pin for drug administration at the top of the door slit. The insertion depth should be as large as possible. If the middle seam cannot be inserted, you can choose to insert it at the top corner of the seam of the door. Check the seal at the pin. If the seal is not good, plug it with adhesive tape.
7. Post warning signs: Fumigation warning signs are posted at prominent places.
8. Final inspection before administration:
(1) Whether the gas concentration detector works normally.
(2) Whether the container is completely sealed.
(3) Whether the fumigation warning signs are posted or hung correctly.
(4) Whether the gas mask is ready.
(5) The temperature should be lower than 15 ℃ or the dosage should be more than 3kg.
If gasification is needed, the gasifier should be turned on at this time (water temperature of the gasifier cannot be lower than 65 ℃).
(6) Whether the cylinder bottle mouth is firmly and tightly connected with the injection tube.
(7) Require unrelated personnel to leave the fumigation site.

6. Fumigation and concentration detection
1. Dosing:
Position the scale.
Wear a gas mask and protective gloves.
Open the cylinder valve slowly and close it again after a few seconds.
Leak detection. The drug can be officially started without leakage, and the dosage rate is controlled at about 1-2Kg per minute.
After the injection is completed, close the valve in time and quickly withdraw the pins. Record the end of dosing.
2. Check for leaks, find leaks, and take immediate measures to plug.
3. Concentration measurement: 30-minute concentration test: The concentration should be above 78% of the administered dose for 2 hours. The average concentration should be no less than 65% of the administered dose. Concentration detection before the end: 24-48h concentration value should be about 50-30% of the dose.
4. Fumigation remedial measures: the minimum concentration value specified before the gas dispersion-the actual concentration detection value is ≤5g / m3, extended for 8-12h;> 5g / m3, supplemented administration is extended for 12-24h. Before supplementing the drug, the loopholes should be re-checked. Calculation formula for supplementary dosage: kg of supplementary dosage = below the minimum concentration (g / m3) × 1.6 (wood packaging 2.0) × volume (m3) ÷ 1000. Phosphine fumigation is not much different from the specified minimum concentration value. You can extend the fumigation time for 24 hours to remedy it. If it is significantly lower than the specified minimum concentration value, re-fumigation.

7. Ventilate the air, put on a gas mask, and open the container door. Special personnel are on duty to prevent personnel from entering the container, and no personnel stay within 20 meters of the door. Natural ventilation for 12 to 24 hours, or mechanical ventilation for more than 4 hours. The goods must be moved.

Detection of residual drug concentration:
① After the ventilation is completed, carry out the detection of the concentration of residual chemicals in the fumigation confined space according to the requirements of the relevant importing country
It can only be released after meeting the requirements, otherwise the ventilation time should be extended until it meets the requirements.
② The inspector wears a gas mask, uses a trace gas concentration detector or a detection tube to directly detect it, and records the reading.
③ The inspectors use air bags to take samples at the scene, and then bring them back to the room for detection with a gas chromatograph.




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