CO Trap Efficiency Check

 

Purpose:  The purpose of this procedure is to check the efficiency of the CO Trap.

 

Required Equipment: None 

                                               

Reference:  SOPMAN

 

Data Collection

 

1.       On DataView, go to the Setup tab and select Process Control.

2.       On the lower left corner of the Process Control screen check the box next to Freeze Process Programs.

3.       In the left column of Process Controls, highlight CO/SO2 Zero from the list and then select Turn ON.

4.       Under the Tools tab, select Query 1-Minute Data. In the query data tool menu select CO.

5.       Wait 5-10 minutes or until the CO number is stable.  A stable number has been reached when the query data numbers are approximately equal to the number on DataView. 

6.       Record the CO value for the last one minute average and label it GRC Zero

7.       Select Turn OFF in the Process Control program.

8.       Highlight CO/SO2 GRC Point 1 from the list, and then select Turn On.

9.       Wait until the CO value is stable.

10.    Record the CO value for the last one minute average and label it Point1.

11.    Select Turn OFF in the Process Control program.

12.    Highlight CO/SO2 Zero from the list, then select Turn On.

13.    Highlight CO Zero from the list, then select Turn On. Both CO/SO2 Zero and CO Zero are running.

14.    Wait until the CO value is stable.

15.    Record the CO value for the last one minute average and label it GRC Zero with Filter Zero.

16.    Highlight CO/SO2 Zero from the list, then select Turn OFF. Leave the CO Zero running.

17.    Highlight CO/SO2 GRC Point 1 from the list; select Turn ON. Now both the CO Zero and CO/SO2 GRC Point 1 are running.

18.    Wait until the CO value is stable.

19.    Record the CO value for the last one minute average and label it Point1 with Filter Zero.

20.    Turn OFF both the CO zero and the CO/SO2 GRC Point 1.

21.    Close the Process Control program.

 

Calculating the CO Trap Efficiency

 

1.        To calculate the CO Trap Efficiency four pieces of information are needed (GRC Zero, Point1, GRC Zero with Filter Zero and Point 1 with Filter Zero).

2.       The formula for calculating the CO Trap Efficiency is as follows:

Efficiency = 1 – [(Point1 with Filter Zero – GRC Zero with Filter Zero) / (Point1 – GRC Zero)]

(Example: Eff. = (1 – [(250 – 200) / (1200 – 200)]) x 100) = 95%           

3.       The CO Trap Efficiency should be 100 % +/-0.01.