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Crew Evaluation CBT Test Online on Exi Components in Ex Zone and Safe Zone (CD-8538)

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Welcome to the website where you can pass online the CES CBT CD-8538 test on the subject «Exi Components in Ex Zone and Safe Zone». 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 Components in Ex Zone and Safe Zone». Those questions can be used for competence verification specialist capable of preventing accidental situations related with transporting safety, or also for self-examination.

«Exi Components in Ex Zone and Safe Zone» 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 course on assesses participants’ understanding of intrinsically safe equipment usage in different industrial environments. It evaluates knowledge of the specific requirements for Exi components in hazardous areas (Ex Zones) versus non-hazardous areas (Safe Zones). Sailors will be tested on their ability to identify appropriate Exi components for various applications and understand their installation and maintenance procedures. The exam includes questions on safety standards, regulations and best practices for managing Exi components in both Ex and Safe Zones. Practical scenarios may be presented to test the ability to troubleshoot and resolve issues related to Exi equipment in different settings. The assessment also covers the importance of proper documentation and record-keeping for Exi components across both zone types. Successful completion of this test demonstrates a comprehensive understanding of Exi component implementation, crucial for ensuring safety in diverse industrial environments. This evaluation is particularly relevant for professionals working in industries where explosive atmospheres may be present, such as oil and gas, chemical processing and maritime operations.

On this site Crew Evaluation System Test on the subject «Exi Components in Ex Zone and Safe Zone» contains 28 questions you need to answer with no possibility to go back to previous question. Therefore, we recommend carefully reading each question and making decision with no hurry. In case you have some difficulty answering, you have also possibility to request a hint.

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* Some questions may have more than 1 correct answer.
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Correct answers:

Use the search below to find question.

Amount of questions: 28.

Right answers marked with this sign .

Are all zener barriers polarity sensitive?
Yes.
No.
Are there any direct electric connection between the IS side and the non-IS side of a Zener barrier?
Yes.
No.
Are there any requirements for simple apparatus?
Yes.
No.
Only for Zone 0.
Does all IS equipment have a T-class?
T-class not relevant for IS.
Yes, all Ex equipment needs a T-class.
No, only if intended to be installed in a zone.
Does all IS equipment have polarity protection?
Only Zener barriers.
Yes.
No.
Does all intrinsically safe components have to be supplied from a galvanic isolator?
Only equipment with the marking [Ex ia].
Yes, all Ex i equipment needs a barrier.
No, some equipment is «self contained» like a hand held lamp.
Equipment with the marking Ex «ic» is suitable for which zone?
Zone 0, Zone 1 and Zone 2.
Zone 1 and Zone 2.
Zone 2 only.
For certified field devices, what may the T-class depend on?
Both.
Ambient temperature.
The source of supply.
How many faults shall a Zener barrier be safe with for ia?
1 fault.
2 faults.
Only safe during normal operation.
How many faults shall a galvanic isolator be safe with for ib?
1 fault.
2 faults.
Only safe during normal operation.
Into which zones may this apparatus be installed: II(1)G [Ex ia Ga] IIC?
Only in an unclassified area.
In Zone 0, Zone 1 and Zone 2.
Only in areas with IIC gasses, Zone 0, Zone 1 and Zone 2.
Into which zones may this equipment be installed: II 2(1)G Ex de [ia] IIC T4 Gb(Ga)?
Zone 1 and Zone 2.
Only Zone 2.
Zone 0, Zone 1 and Zone 2.
Is the nominal Voltage and Current equal to the safety parameters on barriers?
Only for Ex «ic» apparatus.
Yes.
No.
Of the following which is a suitable application for Ex i?
Lighting.
Motors.
Instrumentation.
Typically how many zener diodes are there in a «ia» zener barrier?
2.
3.
4.
What category and EPL will be marked for equipment made for zone 1 and zone 2?
ATEX cat 1/EPL Ga.
ATEX cat 2/EPL Gb.
ATEX cat 1/EPL Gc.
What determines how much power the equipment may send into a hazardous environment or use in a hazardous environment?
The gas group it is designed for.
The level of protection.
The T-class it is designed for.
What does Um on an IS component describe?
The nominal voltage.
The maximum safety voltage.
The voltage safety parameter.
What is FISCO – Fieldbus Intrinsically Safe Concept?
A non-linear IS system.
Not a IS concept.
This is the traditional barriers for Ex i.
What is the minimum IP rating if the IS components do not comply with the minimum requirements for creepage and clearance?
IP 45.
IP 54.
IP 66.
What is the minimum IP rating for IS equipment?
IP 20.
IP 45.
IP 54.
What is the minimum creepage distance between supply side and IS side for a Zener barrier?
3 mm.
6 mm.
50 mm.
What is the minimum creepage distance between supply side and IS side for a galvanically isolated barrier?
3 mm.
6 mm.
50 mm.
What of the following could be an ‘X’ condition on a certificate?
Both.
The equipment has to be installed in an enclosure providing minimum IP 54.
The equipment needs to be mechanically protected.
Which parameters describe the safety parameters for a certified field device?
Ui, Ii, Pi.
Un, In, Pn.
Uo, Io, Po.
Which parameters describe the safety parameters for an associated apparatus?
Ui, Ii, Pi.
Uo, Io, Po.
Un, In, Pn.
Will a galvanic isolator normally have an earth connection?
Only for «ia» and «ib».
Yes.
No.
Will a zener barrier normally have an earth connection?
Yes.
No.
Only for «ia» and «ib».

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