CHEMCO Exit Exam • Set 1 Question 22 of 30

Why are efficient stripping systems essential on chemical tankers?

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Direct Answer

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

Efficient stripping systems are vital on chemical tankers to minimize cargo residue. This is essential prior to mandatory pre-wash or commercial cleaning operations, ensuring compliance with MARPOL Annex II discharge requirements and preventing tank contamination.

All Options

Increase ship speed

Minimize cargo residue left in tanks prior to mandatory pre-wash or commercial cleaning (Correct Answer)

Cool engine room

Fill ballast tanks

Detailed Explanation & Context

Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Advanced Training for Chemical Tanker Cargo Operations (CHEMCO).

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More Questions in CHEMCO Set 1

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Q1 Which IMO Code regulates the carriage of dangerous chemicals in bulk on chemical tankers? Q2 Under MARPOL Annex II, which pollution category presents the major hazard to human health or marine resources? Q3 What test is performed on tank bulkhead surfaces to detect microscopic hydrocarbon residues before loading sensitive chemical cargoes? Q4 What type of chemical tanker skin/tank construction is required for carrying high-hazard cargoes like Isocyanates? Q5 What material is widely used for cargo tanks carrying aggressive acids such as Nitric or Phosphoric acid? Q6 What is the key limitation of Zinc Silicate tank coatings in chemical tankers? Q7 What document must be maintained on board detailing all chemical cargo loading, discharging, tank washing, and slop handling? Q8 What is self-polymerization in chemical cargoes? Q9 What mandatory document provides chemical property, health hazard, reactivity, and emergency response data for a chemical cargo? Q10 What system is used to purge chemical lines and maintain an inert nitrogen cushion over moisture-sensitive cargoes?