Pt Biosecurity Solution Ethylene Oxide Eto Fumigation
Transcript of Pt Biosecurity Solution Ethylene Oxide Eto Fumigation
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ETHYLENE OXIDE (ETO) FUMIGATIONPrepared by :
PT BIOSECURITY SOLUTIONConsultant on Sanitary & Phytosanitary
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Characteristics Ethylene Oxide EtO)
o Liquid gas below 51°F (10.6ºC)o Gas ≥ 51°F (10.6ºC)o smells like ether at toxic levels.o Heavier than air (1,7)o Flammable (10.5%)o LEL 3.5%
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SCOPE OF USES
Fumigation for sanitary & phytosanitary purposes
Sterilization of medical equipment and suplies, as wellas animal cages
used as an intermediate in the production of severalindustrial chemicals, the most notable of which isethylene glycol (anti freezing)
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COMMODITIES REQUIRED ETO FUMIGATION
o Water hyacinth handycrafts (bags, furnitures)o Laquered / painted / varnished / teak oiled wooden,
rattan and bamboo handycrafts ( mostly furnitures,wooden carving)
o Timber / wooden handycrafts with dimension > 20 cmo Feather handycraftso Thatching grass for roofingo Spices
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TARGET OF ETO FUMIGATIONDesinfestation of :
o Arthropods (insects, mites and others)
o Microorganisms (fungi, bacteria, virus)
Devitalization of :
o
Seedso spores
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QIS’S ETO TRE TMENT Treatment T9020
Ethylene oxide
Initial vacuum pressure minimum 50 kilopascalswith dosage rates :1. 1200 gr /m³ / 5 hours exposure time at 50ºC
atau2. 1500 gr /m³ /24 hours exposure time at 21ºC.
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PERMISSIBLE EXPOSURE LIMITS (PELs)
8-hour time-weighted average (TWA) exposure limit: one ppm in the
air
Short-term exposure limit (STEL): five ppm in the air
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ETO FACILITIES BALI
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ETO FACILITIES SURABAYA
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FACILITIES OF ETO FUMIGATIONo Receiving area for incoming goodso Pre-fumigated goods-area
o Fumigation areao Post fumigation areao Clean storageo Loading areao General storageo Office
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VACUUM FUMIGATION CHAMBERS
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BASIC PRINCIPLES
Safety of operators
Safety of commodity and environment
Effectiveness 5/19/2014 ICCBA Surabaya 14
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STANDARD ETO FUMIGATION
Well trained operators
Personal Protection Equipment
Good enginering systems
Standard Operation Procedure of : Safety ,Fumigation , Maintenance , Documentation
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ETHYLENE OXIDE
FUMIGATION PROCEDURE
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LOADING AND STACKING
Commodities are loaded into the chamber and the stacking
should not contacted the wall of chamber to provide enoughfree space in all direction to allow gas circulation .
Each pack of loaded commodity is labelled with treatmentbatch code/number
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LOADING AND CLOSING CHAMBER
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CLOSE VALVE OF AIR INTAKE (VACUUM BREAKER)
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VACUUM PROCESS
Close the door and lock thightlyOpen the vacuum valveTurn on the vacuum machineClose the vacuum breaker valveTurn off the vacuum machine when the vacuumpressure 80 kpa
Wait for 10-15 minutes in to make the vacuumpressure stable at 80 kpa
Vacuum process fail if the vacuum pressure below 80
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GAS INJECTION
Gas injection into chamber through evaporator (1200 or1500 grams/ M³
Gas composition : ETO is 90% + CO2 is 10%
Injection is started when the temperature and vacuumof chamber is minimum 50°C and 80 kpa respectively
After gas injection complete, the vacuum pressure willdecrease below 80 kpa but should not below 50 kpa.
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GAS INJECTION & DETECTION
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EXPOSURE TIME
AQIS Guidelines-Ethylene Oxide (T9020) :
5 hours with dosage rate 1200 grams/M³, at
minimum 50°C and initial vacuum of 50kPa
24 hours with dosage rate 1500 grams/M³, at
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TERMINATING FUMIGATION PROCESS
Removing the eto gas out of the chamber for terminating thefumigation process.
Fumigation is success when during exposure time thetemperature and vacuum pressure remain 50°C and 50 kparespectively
When the aerating process has completed, open the door of
chamber, and check the gas concentration already below limit(1 ppm)
Unload the goods from chamber and move to the clean roomseparately from un-fumigated one.
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AERATING PROCESS
1. Open the vacuum breaker valve and close again when the vacuum pressure zero
2. Open the vaccum valve and turn-on the vacuummachine.
3. Turn-off the vacuum machine when the vacuumpressure 80 kpa
Repeat the process 1-3 several time, 6-8 times dependon the quantity and type of commodity.
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DETECTION OF GAS RESIDU
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POST FUMIGATION HANDLING
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