Take UK ADR Class 7 Radioactive Practice Questions - UK ADR Dangerous Goods Driver Class 7 Radioactive Exam (Qualifications Scotland DfT) Exam

QUESTION 1 / 25

What is the physical definition of a Class 7 radioactive material under ADR Chapter 2.2.7?

Choose one answer below.

AAny material containing radionuclides where both the activity concentration and the total activity in the consignment exceed ADR threshold values✓BAny chemical substance that causes severe skin burns within 3 minutes of contact✓CAny flammable liquid with a flashpoint below 0 °C✓DAny gas pressurized to over 200 bar✓

QUESTION 2 / 25

Which type of ionizing radiation consists of heavy positively-charged helium nuclei with high ionizing power but low penetrating power easily stopped by a sheet of paper?

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ABeta particles (β)✓BAlpha particles (α)✓CGamma rays (γ)✓DNeutron radiation✓

QUESTION 3 / 25

What type of shielding is most effective for stopping high-energy Beta (β) radiation while minimizing bremsstrahlung (x-ray emission)?

Choose one answer below.

ADense lead blocks only✓BDepleted uranium plates✓CLow atomic number (low-Z) materials such as perspex, acrylic, or aluminum✓DSteel chainmail mesh✓

QUESTION 4 / 25

What type of shielding material is required to attenuate Gamma (γ) radiation effectively?

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ASingle layer of cotton fabric✓BClear plastic wrap✓CPaper cardboard sheets✓DHigh-density materials such as lead, depleted uranium, steel, or heavy concrete✓

QUESTION 5 / 25

What are the three fundamental cardinal principles of radiation protection used to minimize external dose to transport workers?

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ATime, Distance, and Shielding✓BSpeed, Temperature, and Pressure✓CVolume, Mass, and Density✓DVoltage, Current, and Resistance✓

QUESTION 6 / 25

According to the Inverse Square Law for point-source radiation, if a driver doubles their distance from a radioactive package (e.g. moving from 1 metre to 2 metres), what happens to the radiation dose rate?

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AThe dose rate drops by one-half (50%)✓BThe dose rate drops to one-quarter (1/4 or 25%) of its original value✓CThe dose rate remains exactly the same✓DThe dose rate doubles✓

QUESTION 7 / 25

What is the SI unit used to measure radioactive decay activity (disintegrations per second)?

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ASievert (Sv)✓BGray (Gy)✓CBecquerel (Bq)✓DWatt (W)✓

QUESTION 8 / 25

What SI unit is used to express equivalent radiation dose and effective dose received by human tissue?

Choose one answer below.

ABecquerel (Bq)✓BPascal (Pa)✓CKilogram (kg)✓DSievert (Sv) or millisievert (mSv)✓

QUESTION 9 / 25

Under UK Ionising Radiations Regulations 2017 (IRR17) and ADR rules, what is the annual effective dose limit for an adult transport worker exposed to ionising radiation in the course of their work?

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A20 mSv per calendar year✓B1 mSv per calendar year✓C500 mSv per calendar year✓D100 mSv per calendar year✓

QUESTION 10 / 25

What does the ALARP / ALARA principle stand for in radiation safety?

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AAlways Lock All Radioactive Packages✓BAs Low As Reasonably Practicable / Achievable✓CAutomatic Level Adjustment for Radiation Protection✓DApproved Licence for All Radioactive Procedures✓

QUESTION 11 / 25

What personal monitoring device must be worn by drivers carrying Class 7 radioactive materials if required by their Radiation Protection Adviser (RPA)?

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AStandard wrist digital watch✓BMagnetic compass✓CPersonal dosimeter badge (e.g. TLD, OSL, or Electronic Personal Dosimeter EPD)✓DHeart rate monitor chest strap✓

QUESTION 12 / 25

What is the radioactive half-life of a radionuclide?

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AThe time it takes for a truck to travel half its journey distance✓BThe expiration date printed on outer cardboard packaging✓CThe time required to heat water to 50 degrees Celsius✓DThe time required for half of the radioactive atoms in a sample to undergo decay and transform into another state✓

QUESTION 13 / 25

If a Cobalt-60 source has an initial activity of 80 GBq and its half-life is approximately 5.3 years, what will its activity be after 10.6 years (two half-lives)?

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A20 GBq (halved twice: 80 -> 40 -> 20 GBq)✓B40 GBq✓C0 GBq✓D160 GBq✓

QUESTION 14 / 25

What is the difference between radioactive contamination and external radiation exposure?

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AContamination is caused by sound waves; exposure is caused by heat✓BContamination occurs when unsealed radioactive material gets onto skin, clothes or surfaces; exposure is receiving energy waves/rays from a source without physical contact✓CContamination occurs only during rain; exposure occurs only in sunlight✓DThere is no difference; both terms mean identical things in ADR✓

QUESTION 15 / 25

What is an A1 or A2 value under ADR 2.2.7.2.2?

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AFirst aid kit model numbers required in the cab✓BSpeed limit thresholds for radioactive transport trucks✓CMaximum activity limits for special form (A1) or non-special form (A2) radioactive material permitted in a Type A package✓DFuel tank capacity ratings for EX vehicles✓

QUESTION 16 / 25

What defines 'Special Form' radioactive material under ADR 2.2.7.2.2.3?

Choose one answer below.

ALiquid radioactive waste stored in glass carboys✓BRadioactive gas stored in rubber balloons✓CPowdered uranium oxide loose in paper sacks✓DIndestructible solid radioactive material or a sealed capsule containing radioactive material that can only be opened by destroying the capsule✓

QUESTION 17 / 25

Which Class 7 package category requires ONLY strong industrial packaging suitable for normal transport handling without needing to withstand accident test conditions?

Choose one answer below.

AExcepted Package✓BType B(U) Package✓CType B(M) Package✓DType C Package✓

QUESTION 18 / 25

What test criteria must a Type A package satisfy under ADR 6.4.7?

Choose one answer below.

AMust withstand high-speed jet aircraft impact at 90 m/s✓BMust withstand normal conditions of transport without loss or dispersal of contents (water spray, free drop test, stacking test, penetration test)✓CMust withstand immersion in seawater at 2,000 metres depth for 1 year✓DNo testing is required for Type A packages✓

QUESTION 19 / 25

What accident condition tests must a Type B(U) package withstand under ADR 6.4.8?

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AA 10 cm drop onto soft grass✓BWashing with warm soapy water for 5 minutes✓CSevere accident conditions including 9-metre drop onto an unyielding target, 1-metre drop onto a steel bar, 800 °C fully engulfing fire for 30 minutes, and 15-metre water immersion✓DStorage in a domestic refrigerator for 1 hour✓

QUESTION 20 / 25

What is the difference between a Type B(U) package and a Type B(M) package under ADR?

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AType B(U) is for underground transport; Type B(M) is for maritime transport only✓BType B(U) carries liquids; Type B(M) carries gases only✓CType B(U) is disposable; Type B(M) is reusable✓DType B(U) requires Unilateral approval (origin country only); Type B(M) requires Multilateral approval from all countries along the transport route due to operational controls✓

QUESTION 21 / 25

Under ADR Chapter 2.2.7, what does LSA stand for in Class 7 transport?

Choose one answer below.

ALow Specific Activity material (e.g. natural uranium ore, contaminated rubble)✓BLiquid Sodium Acid solution✓CLicensed Safety Agent✓DLong-term Storage Area✓

QUESTION 22 / 25

What does SCO stand for in Class 7 dangerous goods classification?

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AStandard Container Operation✓BSurface Contaminated Object (a solid object which is not itself radioactive but has radioactive material distributed on its surfaces)✓CSafety Certificate Officer✓DSystem Control Output✓

QUESTION 23 / 25

What radioactive package label category has a pure WHITE background, a single red vertical bar, and maximum surface dose rate of 0.005 mSv/h (5 μSv/h)?

Choose one answer below.

ACategory II-YELLOW✓BCategory III-YELLOW✓CCategory I-WHITE✓DCategory III-YELLOW (Exclusive Use)✓

QUESTION 24 / 25

What radioactive package label category has a YELLOW top half, a white bottom half, TWO red vertical bars, and a Transport Index (TI) between 0 and 1.0?

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ACategory I-WHITE✓BCategory III-YELLOW✓CExcepted Package Label✓DCategory II-YELLOW✓

QUESTION 25 / 25

What package label category has THREE red vertical bars, a yellow upper half, and is required when the Transport Index (TI) exceeds 1.0 or the surface dose rate exceeds 0.5 mSv/h?

Choose one answer below.

ACategory III-YELLOW✓BCategory I-WHITE✓CCategory II-YELLOW✓DClass 3 Flammable Liquid Label✓