Posted: April 2nd, 2015
The Quality Plan for the Survey.
There are some steps must be taken before going out for measurement. The reason for that is to make sure the device is going to take representative samples. These steps are critical for the survey.
1. Measure a known source.
2. Measure the background.
3. The measurement will be 1 meter high + and – 2 centimeter.
4. Identify each location with numbers. In this survey, there will be ten locations.
5. The survey will be last three days.
The Measurement Procedures
These certain steps should be followed during the measurement:
1. Set the measurement device to the desired unit.
2. The readings will be ratemeter method.
3. Take the reading sample for the known source and the background in the laboratory.
4. Everyday of the project, the known source and the background should be measured in the laboratory
5. Make sure there are no people around the location to avoid measure any radiation that might release from their belongs.
6. The measurement device will be at the waist high, which is one meter.
7. The measurement will be taken one meter away from the front door of each location
8. There will be three reading per location at the same time. The reason for that is to take a representative sample.
9. Each location will be measured at during between 12pm- 3pm.
10. There will be differences between the readings at the same location. The acceptable percentage for this error will be 20%.
11. All the reading will be recorded in the table that is attached below.
After all the procedures steps have been followed, there will be the final step. The last step is to measure the source and background in the laboratory and compare the result before and after I went out for the locations.
The measurement table:
Trial 1 Trial 2 Trial 3
Date/ time 12:00p.m 12:00p.m 12:00p.m
Weather conditions Cloudy Sunny & windy Rainy
Temp, pressure, humidity T: 39f
P 102kpa
H 70% T: 63f
P 101.8kpa
H 68% T: 46f
P 101.1kpa
H 93%
Wind speed 12 MPH 21 MPH 31 MPH
Measurement Data (uR/hr)
Background 47 48 48
Source 55 66 59
1 Harry Mobery Building 45 50 40
2 Whitlock Bldg 50 75 68
3 Dizney Bldg 53 60 46
4 Wallace Building 59 65 65
5 Science Bldg 36 45 38
6 Keen Johnson Building 44 45 51
7 Crabbe library 53 62 54
8 Combs Building 36 46 40
9 Begley Bldg 33 42 33
10 Powell 44 49 53
Background 49 48 49
Source 59 68 55
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