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Fred Pilkington, DPA, Director <br />Page 2 <br /> 3anuary 4, 1991 <br /> <br /> The CO cylinders should be placed outside of the "cat room". The rupture <br /> <br />in the "cat roc~n" end~ngering the life of the operator. Placing the cylinders <br />outside should reduce the hazard. A roof should be placed over the cylinders <br /> '' <br />~nd the regulators to protect them from the weather. A eha~n-li~k enclosure <br />surround/rig the cylinders will prevent v~ndalism as well a~ increase <br />ventilation around the cylinders. <br /> <br /> A method should ba devised to allow the operator to open the chamber, w~ile <br />pro¥idin~ 'aa much distance as ~oesible between himself and the chamber door. <br />~ is now being done, the operator should move away from the cb=~er as quickly <br />aa POesi~le after it is opened. The operator should st~ at least 50 feet from " <br />the cham~ar while it is being vented, and the chamber should be allowed to vent <br />with Both doors open for at least seven m/nutee. After the animals have been <br />euthanised, the CO gas remains essentially undiluted in the chamber until the <br />doors are opened. Significant exposure (the highest measured in the breathing <br />zone) occurred when the doors were first opened. <br /> <br /> Dr. Pilk/ngton, thank for with to the <br /> you <br /> meeting <br /> investigate <br />situation. Hopefully, these short-term recc~nendations will be of some help. <br />We will do some research and make long-term rec~-~-endationa. As always, if you <br />have any questions, please do not hesitate to calk us at (91g} 73~-3410. <br /> <br /> Sincerely, <br /> <br /> lee }tunter, D.¥.}I., <br /> Pmblic Health Veterinarian <br /> Emvironmental Epidemdoing~ Section <br /> <br /> William S. Service <br /> Industrial Hygiene Consultant <br /> Environmen~al Section <br /> EpidamiologM <br /> <br />L~:WSS:~m <br /> <br /> <br />