CHEMCO - Advanced Training for Chemical Tanker Cargo Operations Exit Exam Questions - Set 2

Question 1

What is the function of inert gas on chemical tankers carrying cargoes with flashpoints below 60°C?

Accepted Answer

C: Maintain oxygen concentration below 8% to prevent flammability

Answer

A: Change color

Answer

B: Dissolve fumes

Answer

D: Heat cargo

Question 2

What hazard is associated with Benzene cargo exposure?

Accepted Answer

B: Known human carcinogen causing leukemia and bone marrow damage

Answer

A: Turns skin blue

Answer

C: Heavy metal poisoning

Answer

D: Non-toxic

Question 3

What is closed gauging on a chemical tanker?

Accepted Answer

D: Measuring cargo level using vapor-tight devices without releasing toxic vapors

Answer

A: Opening tank lids

Answer

B: Measuring by draft

Answer

C: Eye sight measuring

Question 4

What chemical condition causes Phenol to solidify at temperatures below 40°C?

Accepted Answer

B: High melting point (~41°C) requiring continuous heating during transit

Answer

A: Nitrogen reaction

Answer

C: High water content

Answer

D: Evaporation

Question 5

How frequently must operational drills and practical checks for regulatory compliance and STCW code requirements be conducted for Advanced Chemical Tanker?

Accepted Answer

C: At least monthly or as mandated by SOLAS and shipboard safety management system (SMS)

Answer

A: Once every 5 years during special survey

Answer

B: Only when requested by port State control inspectors

Answer

D: Annually prior to vessel drydocking

Question 6

What documented record must be maintained on board following completion of tasks related to regulatory compliance and STCW code requirements in Advanced Chemical Tanker?

Accepted Answer

A: Entry in the official Deck or Engine Logbook recording date, time, and operational parameters

Answer

B: No written record is required

Answer

C: Verbal update to port agent without logging

Answer

D: Unsigned note on the shipboard notice board

Question 7

What chemical cargo property is defined as the lowest temperature at which liquid emits flammable vapor?

Accepted Answer

A: Flashpoint

Answer

B: Auto-ignition temp

Answer

C: Pour point

Answer

D: Boiling point

Question 8

What is the function of a toxic vapor return line during chemical loading?

Accepted Answer

A: Return displaced toxic/flammable tank vapors to shore treatment plant

Answer

B: Supply fresh water

Answer

C: Return liquid cargo

Answer

D: Equalize electric grounds

Question 9

What is the role of an Inhibitor Certificate for chemical cargoes prone to polymerization?

Accepted Answer

D: Certifies inhibitor name, concentration, date added, duration of effectiveness, and temp limits

Answer

A: Certifies engine power

Answer

B: Waives safety checks

Answer

C: Authorizes high speed

Question 10

What type of personal protective suit provides complete gas-tight isolation against fatal chemical atmospheres?

Accepted Answer

C: Gas-tight Type 1 (Level A) chemical suit with internal SCBA

Answer

A: Raincoat

Answer

B: Leather jacket

Answer

D: Cotton boiler suit

Question 11

What is the maximum allowed discharge rate of Category Y cargo residues under MARPOL Annex II outside Special Areas?

Accepted Answer

B: Ship speed min 7 knots, below waterline discharge, distance > 12 nm from coast, water depth > 25 m

Answer

A: Direct at jetty

Answer

C: Any speed in port

Answer

D: 100 knots

Question 12

What material coating is ruined if cleaned using high-pressure hot water above 60°C containing alkaline soaps?

Accepted Answer

C: Epoxy tank coatings

Answer

A: Teak wood deck

Answer

B: Stainless steel

Answer

D: Copper piping

Question 13

What is the function of a cargo tank cofferdam on a chemical tanker?

Accepted Answer

C: Isolates chemical cargo tanks from accommodation, machinery spaces, or incompatible liquid tanks

Answer

A: Stores drinking water

Answer

B: Collects rainwater

Answer

D: Holds spare engine pistons

Question 14

What instrument measures relative humidity and dew point inside cargo tanks before loading moisture-sensitive chemicals?

Accepted Answer

D: Electronic Hygrometer / Dew point meter

Answer

A: Barometer

Answer

B: Chronometer

Answer

C: Anemometer

Question 15

What action should be taken if Caustic Soda splashes into a seafarer's eye?

Accepted Answer

A: Immediately flush eye with clean fresh water at eyewash station for at least 15-20 minutes

Answer

B: Rub eye with rag

Answer

C: Apply engine oil

Answer

D: Close eye until tomorrow

Question 16

What is the function of high level and overfill alarms on chemical cargo tanks?

Accepted Answer

A: Provide audible/visual warnings at 95% and 98% capacity to prevent overflow

Answer

B: Measure ship roll

Answer

C: Signal pump room light

Answer

D: Indicate empty tank

Question 17

What type of personal protective equipment (PPE) is essential when handling regulatory compliance and STCW code requirements under Advanced Chemical Tanker guidelines?

Accepted Answer

C: Certified task-specific PPE meeting SOLAS/IMO performance standards

Answer

A: High-visibility vest only

Answer

B: Basic cotton coveralls without eye or foot protection

Answer

D: Standard street clothing with rubber gloves

Question 18

What parameter must be verified prior to authorizing enclosed space entry for regulatory compliance and STCW code requirements related to Advanced Chemical Tanker?

Accepted Answer

D: Atmospheric oxygen level at 20.9% and zero toxic/flammable gas concentration

Answer

A: Oxygen level at 15% with ventilation turned off

Answer

B: Temperature check only

Answer

C: Visual inspection through access hatch without gas testing

Question 19

What is the primary danger of Nitrogen gas used for inerting chemical tanks?

Accepted Answer

D: Oxygen displacement causing rapid asphyxiation and unconsciousness without warning

Answer

A: Flammable explosion

Answer

B: Green skin

Answer

C: Acid burns

Question 20

What chemical cargo term describes liquids that produce severe lung damage if vapors are inhaled?

Accepted Answer

A: Respiratory toxic / Pulmonary edema hazard

Answer

B: Mineral water

Answer

C: Viscous liquid

Answer

D: Sweet scent

Question 21

What type of sampling equipment is used when taking chemical samples without opening tank hatches?

Accepted Answer

A: Closed-loop vapor lock sampling valve with portable sampling bottle

Answer

B: Open bucket

Answer

C: Glass cup

Answer

D: Soup ladle

Question 22

What document lists compatibility restrictions when planning stowage of multiple chemical cargoes?

Accepted Answer

D: USCG Chemical Compatibility Chart / IBC Code Matrix

Answer

A: Engine manual

Answer

B: Suez pass

Answer

C: Load line certificate

Question 23

What is the function of a tank washing machine on chemical tankers?

Accepted Answer

C: High-pressure rotary water jets to wash chemical residues off bulkheads

Answer

A: Sandblasting

Answer

B: Paint spraying

Answer

D: Bilge pumping

Question 24

Why must cargo pumps and pipelines be thoroughly blown down with air/N2 after cargo discharge?

Accepted Answer

C: Clear liquid pockets from piping to prevent contamination and line freezing

Answer

A: Increase pressure

Answer

B: Cool main engine

Answer

D: Clean hull

Question 25

What is Short Term Exposure Limit (STEL)?

Accepted Answer

D: Maximum allowable concentration for continuous 15-minute exposure period

Answer

A: 1 year limit

Answer

B: 24 hour limit

Answer

C: Ignition temp

Question 26

What system prevents static electricity accumulation during high-rate loading of non-conducting chemical solvents?

Accepted Answer

C: Restricting initial loading rate (flow velocity < 1 m/s) and grounding/bonding lines

Answer

A: Max speed pumping

Answer

B: Spraying water

Answer

D: Opening hatches

Question 27

What step is taken if a chemical cargo tank lining shows extensive breakdown and rust spots?

Accepted Answer

C: Tank must be de-gassed, cleaned, grit-blasted, and re-coated before loading compatible cargo

Answer

A: Fill with seawater

Answer

B: Paint household paint

Answer

D: Ignore rust

Question 28

Who is responsible for supervising all chemical cargo operations and safety checks on board?

Accepted Answer

C: Chief Officer / Designated Cargo Officer

Answer

A: Chief Cook

Answer

B: Steward

Answer

D: Deck Cadet

Question 29

What key responsibility belongs to seafarers performing watchkeeping duties for regulatory compliance and STCW code requirements under Advanced Chemical Tanker?

Accepted Answer

C: Continuous monitoring of operational parameters and immediate reporting of anomalies

Answer

A: Bypassing safety trips during routine operations

Answer

B: Leaving watchkeeping station unattended

Answer

D: Operating equipment beyond design pressure limits

Question 30

Which document contains detailed hazard data and emergency handling instructions for substances involved in regulatory compliance and STCW code requirements during Advanced Chemical Tanker?

Accepted Answer

C: Safety Data Sheet (SDS) / Material Safety Data Sheet (MSDS)

Answer

A: Crew List document

Answer

B: Ship's Cargo Manifest summary page

Answer

D: Bill of Lading description

Advanced Training for Chemical Tanker Cargo Operations (CHEMCO) (Set 2)

What is the function of inert gas on chemical tankers carrying cargoes with flashpoints below 60°C?

Questions in CHEMCO Set 2

Question Discussion & Notes

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