CHEMCO - Advanced Training for Chemical Tanker Cargo Operations Exit Exam Questions - Set 1

Question 1

Which IMO Code regulates the carriage of dangerous chemicals in bulk on chemical tankers?

Accepted Answer

C: IBC Code

Answer

A: IMSBC Code

Answer

B: IGC Code

Answer

D: IMDG Code

Question 2

Under MARPOL Annex II, which pollution category presents the major hazard to human health or marine resources?

Accepted Answer

D: Category X

Answer

A: Category Y

Answer

B: OS (Other Substances)

Answer

C: Category Z

Question 3

What test is performed on tank bulkhead surfaces to detect microscopic hydrocarbon residues before loading sensitive chemical cargoes?

Accepted Answer

D: Wall Wash Test (WWT)

Answer

A: Hydrostatic pressure test

Answer

B: Magnetic particle test

Answer

C: Ultrasonic thickness test

Question 4

What type of chemical tanker skin/tank construction is required for carrying high-hazard cargoes like Isocyanates?

Accepted Answer

A: Type 1 chemical tanker

Answer

B: Single hull barge

Answer

C: Type 3 chemical tanker

Answer

D: Open deck vessel

Question 5

What material is widely used for cargo tanks carrying aggressive acids such as Nitric or Phosphoric acid?

Accepted Answer

A: Stainless Steel (e.g. 316L, Duplex 2205)

Answer

B: Aluminum alloy

Answer

C: Zinc silicate coating

Answer

D: Mild carbon steel

Question 6

What is the key limitation of Zinc Silicate tank coatings in chemical tankers?

Accepted Answer

B: Incompatible with acids and strong alkalis (pH limits usually 6 to 10)

Answer

A: Highly flammable surface coating

Answer

C: Cannot handle aromatic solvents like Benzene

Answer

D: Melts at room temperature

Question 7

What document must be maintained on board detailing all chemical cargo loading, discharging, tank washing, and slop handling?

Accepted Answer

B: Cargo Record Book (CRB)

Answer

A: Radio Log Book

Answer

C: Bell Book

Answer

D: Engine Log Book

Question 8

What is self-polymerization in chemical cargoes?

Accepted Answer

D: Chemical reaction where monomer molecules join to form long polymers, generating intense heat

Answer

A: Dissolving of cargo into seawater

Answer

B: Freezing of liquid into crystal ice

Answer

C: Evaporation of cargo into atmosphere

Question 9

What mandatory document provides chemical property, health hazard, reactivity, and emergency response data for a chemical cargo?

Accepted Answer

A: Material Safety Data Sheet (MSDS)

Answer

B: Tonnage Certificate

Answer

C: Crew List

Answer

D: Customs Manifest

Question 10

What system is used to purge chemical lines and maintain an inert nitrogen cushion over moisture-sensitive cargoes?

Accepted Answer

C: Nitrogen padding / inerting system

Answer

A: Steam lance system

Answer

B: Seawater flushing system

Answer

D: Compressed air blower

Question 11

Under STCW Code Table A-V/1-1-3, what is the mandatory requirement regarding regulatory compliance and STCW code requirements during Advanced Chemical Tanker operations?

Accepted Answer

B: Strict compliance with approved safety procedures and flag state regulations

Answer

A: Optional adherence based on vessel size

Answer

C: Applicable only during drydock operations

Answer

D: Verbal recommendation without documentation

Question 12

What specific safety precaution must be observed when managing regulatory compliance and STCW code requirements for Advanced Chemical Tanker on board?

Accepted Answer

D: Conducting a thorough risk assessment and briefing all involved personnel prior to starting work

Answer

A: Proceeding without informing the officer on watch

Answer

B: Delegating tasks exclusively to untrained crew members

Answer

C: Disabling automated safety alarms to save time

Question 13

What is Threshold Limit Value - Time Weighted Average (TLV-TWA)?

Accepted Answer

A: Safe airborne exposure concentration for normal 8-hour workday and 40-hour workweek

Answer

B: Maximum limit for 1 minute

Answer

C: Pressure limit

Answer

D: Temperature limit

Question 14

What chemical cargo reaction occurs when two incompatible cargoes contact each other?

Accepted Answer

C: Incompatible chemical reactivity producing toxic fumes, heat, or explosion

Answer

A: Sublimation

Answer

B: Condensation

Answer

D: Freezing

Question 15

What is mandatory prior to personnel entering a chemical cargo tank for inspection?

Accepted Answer

C: Tank gas-freeing, atmospheric testing for O2 (20.9%), toxic gas (0 ppm), LEL (0%), and Enclosed Space Entry Permit

Answer

A: Washing with seawater

Answer

B: Verbal permission from cook

Answer

D: Opening main valve

Question 16

What personal protective equipment is required during chemical cargo sampling of toxic substances?

Accepted Answer

B: Chemical suit, boots, face shield/goggles, chemical resistant gloves, and organic vapor mask or SCBA

Answer

A: Leather apron

Answer

C: Short sleeves

Answer

D: Standard coveralls

Question 17

What equipment must be available near chemical cargo manifolds during transfer operations?

Accepted Answer

D: Emergency safety shower and eye-wash station

Answer

A: Steam boiler

Answer

B: Radio receiver

Answer

C: Paint spray machine

Question 18

What is the P&A Manual on a chemical tanker?

Accepted Answer

B: Procedures and Arrangements Manual approved by Flag State Administration

Answer

A: Pump manual

Answer

C: Port anchorage guide

Answer

D: Personnel manual

Question 19

What device is installed on chemical tank venting systems to prevent over-pressure or vacuum?

Accepted Answer

B: High-velocity Pressure/Vacuum (P/V) valve

Answer

A: Check valve

Answer

C: Globe valve

Answer

D: Needle valve

Question 20

What cargo stripping result is required for modern Type 2 chemical tankers built after May 2007 carrying Category X, Y, Z cargoes?

Accepted Answer

A: Maximum residue remaining per tank must not exceed 75 liters

Answer

B: 1000 liters

Answer

C: 5 cubic meters

Answer

D: No limit

Question 21

What is the function of a toxic gas detector tube system (e.g. Dräger tube)?

Accepted Answer

C: Measure specific chemical vapor concentrations in ppm by colorimetric reaction

Answer

A: Test battery

Answer

B: Measure oil viscosity

Answer

D: Measure salinity

Question 22

Why are efficient stripping systems essential on chemical tankers?

Accepted Answer

B: Minimize cargo residue left in tanks prior to mandatory pre-wash or commercial cleaning

Answer

A: Increase ship speed

Answer

C: Cool engine room

Answer

D: Fill ballast tanks

Question 23

Which international regulation specifies the minimum standard for regulatory compliance and STCW code requirements concerning Advanced Chemical Tanker?

Accepted Answer

A: STCW Code Section A-V/1-1-3 and relevant SOLAS/MARPOL conventions

Answer

B: Port State Control advisory note only

Answer

C: Tonnage Measurement Convention 1969

Answer

D: International Load Line Certificate Annex 3

Question 24

In the event of an emergency involving regulatory compliance and STCW code requirements during Advanced Chemical Tanker tasks, what immediate action is required?

Accepted Answer

C: Raise the alarm, notify the Officer of the Watch, and execute assigned muster list duties

Answer

A: Attempt to resolve the incident silently without raising the alarm

Answer

B: Wait until the end of the watch to log the issue

Answer

D: Evacuate the vessel immediately without informing the bridge

Question 25

What is the purpose of a mandatory pre-wash under MARPOL Annex II?

Accepted Answer

C: Remove high-viscosity or solidifying Category X / Y residues to shore reception

Answer

A: Clean windows

Answer

B: Polish steel

Answer

D: Wash deck

Question 26

What is the Permanganate Time Test used for in chemical tank cleaning?

Accepted Answer

D: Detect trace presence of oxidizable organic impurities after cleaning for high-purity alcohol cargoes

Answer

A: Test oxygen concentration

Answer

B: Test fuel sulfur

Answer

C: Test water temp

Question 27

What code specifies medical emergency response steps for chemical accidents on ships?

Accepted Answer

D: Medical First Aid Guide (MFAG)

Answer

A: SOLAS Chapter V

Answer

B: STCW Reg I/9

Answer

C: MARPOL Annex VI

Question 28

What type of cargo pump is fitted inside individual stainless steel chemical cargo tanks?

Accepted Answer

A: Deepwell centrifugal pump

Answer

B: Steam duplex pump

Answer

C: Hand pump

Answer

D: Gear pump

Question 29

Why is water prohibited for cleaning tanks after carrying Concentrated Sulfuric Acid?

Accepted Answer

C: Water reacts exothermically generating extreme heat and corrosive splattering

Answer

A: Water freezes

Answer

B: Water turns steel into wood

Answer

D: Water turns acid into rock

Question 30

What is a Certificate of Fitness for the Carriage of Dangerous Chemicals in Bulk?

Accepted Answer

C: Statutory certificate listing all specific chemical products approved for carriage

Answer

A: Crew medical fitness

Answer

B: Engine overhaul certificate

Answer

D: Pilot license

Advanced Training for Chemical Tanker Cargo Operations (CHEMCO) (Set 1)

Which IMO Code regulates the carriage of dangerous chemicals in bulk on chemical tankers?

Questions in CHEMCO Set 1

Question Discussion & Notes

Leave a Comment / Clarification