Comprehensive Report

Large radiation worker studies have the potential to provide precise risk estimates for protracted exposure to low-level ionising radiation. Recent worker studies have reported statistically discernible dose-related increased risks of cancer; however, results must be interpreted with care, and occupational radiation doses need to be treated with particular attention (Wakeford,2018).

The Acme Manufacturing Co. has contracted BSCI to conduct a study to determine employee exposures to radiation, effectiveness of engineering controls, as well as shielding. BSCI will test areas such as the test equipment and repair facility, the radar testing facility, and the laser laboratory.

Test Equipment and Repair Facility

At the on-site test equipment and repair facility, the testing equipment contains a radiation source. It is important to limit employee exposure; Acme manufacturing Co. uses time limiting as a method of control. The Acme manufacturing Co. is still concern about radiation exposure, and considering installing lead shields or increasing the distance from the source in order to increase employee working time on the equipment.

Bench #3: Intensity = 110 mrem/h (.5)² /(2)²

Intensity = 110 mrem/h (0.0625)

Intensity = 6.875 mrem/h

Bench #5: Intensity = 137 mrem/h (1)² / (3)²

Intensity = 137 mrem/h (.1111)

Intensity = 15.22 mrem/h

Bench #6: Intensity = 102 mrem/h (.75)² / (1.5)²

Intensity = 102 mrem/h (.25)

Intensity = 25.5 mrem/h

The ACME Manufacturing Co. has also considered installing lead shields in order to reduce the employees dose rate. I will use the information that was provided in table 1 and determine the intensity at the same distances listed if a 5cm shield was placed between the source and the detector.

 Bench #3:Intensity = (110 mrem/h)e^(-1.23x5)

Intensity = 110 mrem/h (0.0021)

Intensity = 0.23 mrem/h

Bench #5:(137 mrem/h) e^(-1.23x5)

Intensity = 137 mrem/h (0.0021)

Intensity = 0.29 mrem/h

Bench #6Intensity = 102 mrem/h) e^(-1.23x5)

Intensity = 102 mrem/h (0.0021)

Intensity = 0.21 mrem/h

Radar Testing Facility

I’ve also been tasked with evaluating the estimated density levels for the near and far fields. The radar testing facility consists of two radar units. The calculations are as followed:

Radar Unit 1: Near 16 (50,000,000,000 W))/(3.14) (121.92)²

(800,000,000,000 mW)/(46,674.5 cm²)

W=17,113,998.1

Radar Unit 1: Far W = 10(50,000,000 mW) / 4(3.14)(121.92 cm)²

W = 500,000,000 mW / 186697.95 cm²

W = 2678.12 mW/cm²

Radar Unit 2: Near 16 (110,000,000,000 W))/(3.14) ( 26)²

(176,000,000,000 mW)/(2,122.6 cm²)

W=829,171,770.5 mW/cm²

Radar unit 2: Far W = 10(110,000,000 mW) / 4(3.14)(26 cm)²

W = 1,100,000,000 mW / 8490.56 cm²

W = 129,555.65 mW/cm²

Laser Laboratory

Safety measures must be in place prior to installing the Class III, IIIA, and IIIB lasers. The general control measures are as followed.

Shielding to reflect radiation

Shielding to absorb radiation

Restrict access to radiation source

Increase distance from the source

Limit time of exposure

Utilize less hazardous radiation

Personnel should receive training on standard operating procedures (SOP) and the use of personal protective equipment.

References

Wakeford. R (2018) The growing importance of radiation worker studies. Retrieved from: https://www.nature.com/articles/s41416-018-0134-6