--=--=--- -

IAPRIL 2010

KOD KURSUS

TAJUKKURSUS

ARAHAN

.~- .-\ -~.~~:;'-- - .. =- ~~.xUNlVERSITI KEBANGSAAN MALAYSIA

PEPERIKSAAN AKIllRSEMESTER 11 SESI AKADEMIK 2009-2010

IJAZAH SARJANAMUDA DENGAN KEPUJIAN

MASA: 2 JAM

STSN2162/STSN2342

FIZIK KESIHA TAN

1. Kertas soalan ini mempunyai Bahagian A, B dan C.

2. Jawab EMPAT (4) soalan Bahagian A dalam bukujawapan yangdiedarkan.

3. Jawab SEMUA soalan Bahagian B dalam bukujawapan yangdiedarkan.

3. Jawab SEMUA soalan Bahagian C dalam kertas soalan.

'..

No. Pendaftaran :

(dengan perkataan)

Kertas soalan ini mengandungi 7 muka surat bercetak, tidak termasuk muka surat ini

'C~~)lu~1SIAaNt 074

MS ISO 9001 REG. NO. AR 2845

No. Pendaftaran: o=rrrr:o

PART A

Instruction: Answer FOUR (4) questions ONLY.

STSN2162/STSN2342

1. a). Briefly explain TWO (2) important reasons why Atomic Energy Licensing

Board (AELB) require all applicants to submit their ''radiation protection

programme" during their license application?

(5 marks)

b). Give the definition of "clean, supervised and control" areas AND who IS

allowed to work in these areas?

(5 marks)

2. a. List SIX (6) main responsibilities of a Radiation Protection Officer (RPO).

(6 marks)

b. List FOUR (4) main responsibilities of a Radiation Worker.

(4 marks)

a) What is the definition of nuclear waste as stipulated in Atomic Energy

Licensing Act 1984 (Act 304)?

(2 marks)

b) What is the main objective of nuclear waste management in Malaysia?

(2 marks)

c). Briefly explain THREE (3) principles of radioactive waste disposal?

(6 marks)

3. a). What is the principle of radioactive waste treatment?(2 marks)

b). Briefly explain TWO (2) basic treatment used for small volume waste.(4 marks)

c). Briefly explain ONE (1) advantage of shallow and deep geological burials asdisposal methods.

(4 marks)

1

No. Pendaftaran: IT[[[TIJ STSN2162/STSN2342

5. a). List FIVE (5) basic principles of radioactive waste management:

(5 marks)

b). List THREE (3) objectives of establishing radiological monitoring.

(3 marks)

c). List TWO (2) equipments normally used to carry out radiation and

contamination monitoring.

(2 marks)

2

No. Pendaftaran: ~J

PART B

Instruction: Answer ALL questions.

STSN2162/STSN2342

1. Explain mathematically the difference between Absorbed Dose and EquivalentDose.

(4 marks)

2. Explain why Pu-239 is an internal radiation hazard and not so much an externalradiation hazard?

(3 marks)

3. a. Define "Derived Air Concentration (DAC)"(2 marks)

b. Write the mathematical relationship between DAC and Annual Limit ofIntake (ALl).

(2 marks)

c. The airborne contamination in a laboratory which deals solely with Cs-137-3

is measured as 125 Bq m . Calculate this airborne contamination level in terms ofDerived Air Concentrations (DACs), AND the annual committed effective doseassociated with this airborne contamination level? ALl (inhalation) for Cs-137 =

6 .3.0x 10 Bq..

(6 marks)

4. List and briefly explain the FOUR (4) methods of control in the transportation ofradioactive materials respectively.

(12 marks)

5. List and briefly explain 5 LOCAL RULES in the transportation of radioactivematerial within the premise.

(5 marks)

3

No. Pendaftaran: ~

PARTC

Instructions: Answer ALL questions in this question sheet.

1. What is radiation accident?

STSN2162/STSN2342

(2 marks)

2. What are the TWO (2) main objectives of emergency plan and preparedness?

(2 marks)

1•••••••••••.•.••••••••••••.•.•••••••••..•..••••••••.•..••••...•....•.•.•••••..•.••.•..••••.••.•.••

11••••••••••••••••••••••••••••••••••••.••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••

3. A radiological accident is one that involves .(3 marks)

1. ••••••••••••.••••••••.••••....••...••.••••...•••.•.•••••.•••.•••.•••.••.••••••••••.•.•••••••.

ii. .111. ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••

4. State THREE (3) common places where radiological accident could usually

happen.

(3 marks)

1. .•••..•....•....••.......•.•..•..•..•.....••••...••••.•.••..•...••.•....••...•••.•..........••.•

11••••••••••••••••••••••••••••••.•••.••••••••••••••••••••••••••••.•••••••••••••••••••••••.••••••••

iii .

4

No. Pendaftaran: [I[IIJIJ5. State FOUR (4) fundamental principles of decontamination.

1.

STSN2162/STSN2342

(4 marks)

ii. .

iii. .

IV .•.•.••.••.•.•••••••••••••••.•••••.••••••.•••••••.•••.•.••.••.••.•.•.•.•••••..••••••••.•.•••••..•.••

5. List TWO (2) main objectives of the Code of Conduct on the nuclear safety and

nuclear security respectively.

(4 marks)

Nuclear safety

1.

11.

Nuclear security

1.

ii.

5

No. Pendaftaran: [C[J]TIJ STSN2162/STSN2342

6. A company plans to import 900 GBq Co-60 and 4.5 TBq Sr-90 to be used in its

industrial gauge. The D-value for Co-60 and Sr-90 is 0.03 TBq and 1.00 TBq

respectively.

a. Identify the security category for this instrument?

(5 marks)

6

f-

No. Pendaftaran: CIII:ICD STSN2162/STSN2342

b. Based on the Code of Conduct on Safety and Security of radioactive

sources (Cae 2004), what are the steps needed to be taken all parties

involved before the order can be delivered.

(4 marks)

c. What is the security group for the instrument?(1 marks)

"SELAMAT MAW JAVA"

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