CSWIP 3.1U Practice Questions - CSWIP 3.1U Underwater (NDT) Inspection Diver Exam - CSWIP 3.1U Practice Questions - CSWIP 3.1U Underwater (NDT) Inspection Diver Exam

Question 1

What is the primary objective of performing a preliminary subsea visual inspection (General Visual Inspection / GVI) on an offshore jacket structure?

To assess overall structural integrity, detect major mechanical damage, and locate gross marine fouling. To detect subsurface micro-cracking inside structural tubular members. To measure exact sound velocity variations across welded nodal joints. To measure internal wall loss without cleaning surface deposits.

Correct Answer:

To assess overall structural integrity, detect major mechanical damage, and locate gross marine fouling.

Question 2

How does Close Visual Inspection (CVI) differ from General Visual Inspection (GVI) during a CSWIP 3.1U subsea survey?

CVI is conducted entirely using ROVs without diver intervention. CVI requires localized surface cleaning down to bare metal or tight marine growth removal to examine specific details and welds. CVI is restricted to top-side splash zone structural members only. CVI replaces all non-destructive magnetic and ultrasonic testing requirements.

Correct Answer:

CVI requires localized surface cleaning down to bare metal or tight marine growth removal to examine specific details and welds.

Question 3

Which surface cleaning tool is most appropriate for removing heavy hard marine growth (such as thick barnacles and tubeworms) prior to CVI and MPI without gouging the underlying steel weld?

Heavy oxy-arc cutting torches Coarse angle grinding discs removing 3 mm of parent plate Hydraulic wire brushes or needle scalers used with controlled pressure High-explosive micro-detonation cords

Correct Answer:

Hydraulic wire brushes or needle scalers used with controlled pressure

Question 4

When inspecting a subsea structural tubular weld, what visual appearance distinguishes a fatigue crack from a superficial surface scratch?

A fatigue crack is always perfectly straight and perfectly perpendicular to the water surface. A scratch always exhibits rust staining while a fatigue crack remains shiny steel underwater. A fatigue crack only forms inside internal structural air pockets. A fatigue crack typically follows stress concentrations at the weld toe, showing depth and sharp linear progression, whereas a scratch has rounded mechanical edges.

Correct Answer:

A fatigue crack typically follows stress concentrations at the weld toe, showing depth and sharp linear progression, whereas a scratch has rounded mechanical edges.

Question 5

What surface preparation cleanliness standard (equivalent to ISO 8501-1) is required before conducting underwater magnetic particle inspection (MPI) on structural steel welds?

Sa 2.5 / Very thorough blast cleaning to bright metal Sa 1 / Light brush cleaning leaving loose scale St 2 / Hand tool scraping leaving firmly adhering paint No cleaning is required prior to subsea MPI

Correct Answer:

Sa 2.5 / Very thorough blast cleaning to bright metal

Question 1

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Prepare with the CSWIP 3.1U Practice Questions - CSWIP 3.1U Underwater (NDT) Inspection Diver Exam practice quiz. This question bank includes 100 questions covering subsea, inspection, steel, thickness, and visual. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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CSWIP 3.1U Practice Questions - CSWIP 3.1U Underwater (NDT) Inspection Diver Exam

This practice set contains 100 questions from the matching question bank and focuses on subsea, inspection, steel, thickness, and visual. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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CSWIP 3.1U Practice Questions - CSWIP 3.1U Underwater (NDT) Inspection Diver Exam

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