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Seagull CBT Exi Installation and Inspection Answers (CD 8540, Engine, Operational)

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Amount of questions: 30.

Right answers marked with this sign .

Are there any restrictions for measuring devices to be used in an Intrinsically safe loop?
Yes.
No.
Only when working in a zone environment.
From where does the clearance requirement count?
From the centre of the housing of barrier or terminal.
From the «metal» in the terminal to metal.
From the edge of the housing of barrier or terminal.
How many IS circuits may be routed through a junction box containing non-IS circuits without reduction of the level of protection?
No limitation.
IS circuits may never be routed through a cabinet or junction box carrying non-I. S.
Only 2 circuits.
Only one.
How to verify how many zener diodes that are broken in a Zener barrier?
Megger test between IS and non-IS side.
There shall always be an indicator on the barrier side.
Unfortunatly, not possible.
If the cable parameters are unknown, what to do?
Test it according to procedure in IEC 60079-14.
Use another cable.
Use the «standard» values stated in IEC 60079-14.
All of the options are OK.
To where may the IS main earth reference be connected?
To the installations «main earth reference».
From the PE locally in a cabinet.
The IS earth is to be left floating.
What are the Ex requirements for junction boxes and plugs with a single IS circuit?
Has to be certified for the same zone as the entire circuit.
Has to be certified for the zone of installation.
None.
What are the Ex requirements for junction boxes and plugs with multiple IS circuits?
Has to be certified for the same zone as the entire circuit.
Should be certified.
None.
What dielectric voltage test shall cables for IS be able to withstand?
150 VDC or 250 VDC.
500 VAC or 700 VDC.
1 500 VAC or 2 300 VDC.
What grade of inspection shall be used during the initial inspection?
Close.
Periodic.
Detailed.
Visual.
What happens to ia circuits in a «type A» multicore circuit?
They remain «ia».
The level of safety is reduced to «ib».
The level of safety is reduced to «ic».
What happens to ia circuits in a «type B» multicore circuit?
The level of safety is reduced to «ib».
The level of safety is reduced to «ic».
They remain «ia».
What happens to ia circuits in a «type C» multicore circuit?
The level of safety is reduced to «ib».
The level of safety is reduced to «ic».
They remain «ia».
What is Um?
The nominal operation voltage.
The maximum safety voltage on the barrier.
The output voltage.
What is a «type A» cable?
Multicore cable with individual screen.
Multicore cable with armouring or mechanical protection.
Multicore cable with common screen.
Unarmoured and unscreened.
What is a «type B» cable?
Multicore cable with common screen.
Multicore cable with armouring or mechanical protection.
Multicore cable with individual screen.
Unarmoured and unscreened.
What is a «type C» cable?
Multicore cable with armouring or mechanical protection.
Multicore cable with common screen.
Multicore cable with individual screen.
Unarmoured and without individual screen.
What is an initial inspection?
A grace of inspection, the visual inspection.
A grade of inspection, the yearly inspection.
A type of inspection, the commissioning verification.
What is the maximum allowable impedance from the IS earth back to equipotential bonding?
1 Ω.
10 Ω.
1 kΩ.
2,5 µΩ.
What is the maximum allowable interval between inspections?
1 year.
3 years.
5 years.
6 months.
What is the minimum creepage and clearance between IS and non-IS.
50 mm.
3 mm.
5 mm.
6 mm.
What is the minimum creepage and clearance between IS and earth?
3 mm.
5 mm.
6 mm.
50 mm.
What is the minimum creepage and clearance between two separate IS circuits?
3 mm.
5 mm.
6 mm.
50 mm.
What is the minimum cross-section when using a single conductor for the IS earth to equipotential bonding?
2,5 mm2.
4 mm2.
10 mm2.
What is the minimum cross-section when using two conductors for the IS earth to equipotential bonding?
1,5 mm2.
2,5 mm2.
4 mm2.
10 mm2.
What is the preferred colour to indicate IS?
Dark red.
Light green.
Light blue.
Light yellow.
What is the standards minimum cross-section for a bonding connection?
1,5 mm2.
4 mm2.
10 mm2.
16 mm2.
What is the standards recommended barrier type for Zone 0?
Only non-linear barriers.
The earthed zener barrier.
Galvanically isolated.
What level of protection is normally suitable for areas requiring EPL Gb/ATEX cat 2?
ia and ib.
ia only.
ia, ib and ic.
What level of protection is normally suitable for areas requiring EPL Gc/ATEX cat 3?
ia only.
ia, ib.
ia, ib and ic.

Welcome to the website where you can pass online the CES CBT CD-8540 test on the subject «Exi Installation and Inspection». Practice like this will help you as a marine specialist improve your knowledge with the help of online studying and appraisal practice. CES based on practical information and marine specialists experience.

CES tests developed for evaluating seaman basic knowledge by Seagull Company (rebranded as «OTG»), is an evaluating online-tool, used for revealing any professional preparation needed in specific fields of knowledge, defined by STCW.

CES tests have proven themselves as good tools for the selection and recruitment process, as well as advancing the level of knowledge of the current officers and crew. Ocean Technologies Group use various subjects for question creation, which includes:

  • Crowd and Crisis Management;
  • Integrated Navigation System (INS);
  • Ballast water management;
  • Handling and Stowage;
  • Vessel operation management and safety;
  • Marine engineering;
  • Maintenance and repair, etc.

Current test contains Seagull CES questions on the subject «Exi Installation and Inspection». Those questions can be used for competence verification specialist capable of preventing accidental situations related with transporting safety, or also for self-examination.

«Exi Installation and Inspection» subject includes theoretical and practical information about advanced training for work on any type of vessel. The test is designed to provide training for personnel working on ships of various types. The training course provides essential knowledge about installation procedures and inspection protocols for various ship systems and equipment. Sailors learn both theoretical concepts and practical skills necessary for proper installation and inspection work aboard different types of vessels. The test covers comprehensive inspection techniques and installation methods that comply with international maritime safety standards. Participants receive training in identifying potential hazards and conducting thorough safety inspections across different vessel types. The course emphasizes the importance of proper installation procedures for maritime equipment and regular maintenance inspections. Sailors gain practical experience in conducting systematic inspections and verifying proper installation of various shipboard systems. The training includes detailed instruction on documentation requirements for installation work and inspection procedures aboard vessels. Upon completion, participants are equipped with the knowledge and skills to perform professional installations and inspections on any type of marine vessel.

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Vladimir Filatov
Vladimir Filatov
Chief Officer
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Senior Mate with 12+ years of experience in the international merchant marine.

  • Development and implementation of navigation and on-board safety plans.
  • Supervising the work of the crew and assisting the captain in managing the vessel.
  • Participation in training of junior crew, ensuring compliance with safety standards.

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February, 21, 2025 1850 0
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