89th day of attchment
I continued doing the checking for the chemical agent monitor as there are still 2 more in the emergency planning room while waiting for the other one to finish doing the self–test as from what I have mentioned yesterday, it keep indicating “wait”. I turned two identical devices on to check whether it is normal for it to run for such a period of time. While it is running, I made used of the time to read through the operator’s manual.
Based on the manual, there seems to be one disadvantage of using CAM. You know that it is used to detect contamination through vapour and wind direction may affect the flow of toxic vapour. It only detects the vapour at the point where its nozzle has contact with. Therefore, the hazardous vapour will flow to the previously safe region due to any sudden change of wind direction. Before the usage, the CAM operator has to determine the wind direction in order to allow CAM to have accurate response.
There may have some interference agents that affect the CAM and give a false response.
The interference agents are:
Perfume or deodorant that we used may contain a bit of G mode agent which will cause a response if CAM is held close to our skin.
Smokes and fume such as breech fume from munitions while loading the bullets.
Cleaning agents which may contain methanol. Methanol is an additive used to give a pleasant smell such as orangey smell after being washed.
After letting it run for an hour or more, the device is ready for use. I believe that some devices required longer period of time to perform the self–test. After performing the confidence test, I found out that the indicator does not decrease within 2–5 seconds as what sated in the manual. According the manual, I have to remove the nozzle stand-off and let it run with the protective cap for 15 minutes. However, the meter indicator does not decrease further more from 4 bars.
A PCA pump, Graseby 3100, is sent by a pottering attendant and the problem with it is unable to switch off the device. After analyzing the fault and performing functional check, I concluded that the device is working fine.
In the afternoon, I finished checking all 4 of the CAM and found out that one of them not operating well. The schiller ECG recorder, AT-2 Plus, having the same problem as 4 days ago.
Based on the manual, there seems to be one disadvantage of using CAM. You know that it is used to detect contamination through vapour and wind direction may affect the flow of toxic vapour. It only detects the vapour at the point where its nozzle has contact with. Therefore, the hazardous vapour will flow to the previously safe region due to any sudden change of wind direction. Before the usage, the CAM operator has to determine the wind direction in order to allow CAM to have accurate response.
There may have some interference agents that affect the CAM and give a false response.
The interference agents are:
Perfume or deodorant that we used may contain a bit of G mode agent which will cause a response if CAM is held close to our skin.
Smokes and fume such as breech fume from munitions while loading the bullets.
Cleaning agents which may contain methanol. Methanol is an additive used to give a pleasant smell such as orangey smell after being washed.
After letting it run for an hour or more, the device is ready for use. I believe that some devices required longer period of time to perform the self–test. After performing the confidence test, I found out that the indicator does not decrease within 2–5 seconds as what sated in the manual. According the manual, I have to remove the nozzle stand-off and let it run with the protective cap for 15 minutes. However, the meter indicator does not decrease further more from 4 bars.
A PCA pump, Graseby 3100, is sent by a pottering attendant and the problem with it is unable to switch off the device. After analyzing the fault and performing functional check, I concluded that the device is working fine.
In the afternoon, I finished checking all 4 of the CAM and found out that one of them not operating well. The schiller ECG recorder, AT-2 Plus, having the same problem as 4 days ago.
posted by Michelle Tham @ 8:49 AM
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