Test about Enclosed Space Entry

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Правильні відповіді:
1

For enclosed space entry, what is the definition of a “Responsible Person”? Select the ONE correct answer:

Ваша відповідь правильна:

A person authorized to permit entry into an enclosed space and having sufficient knowledge of the procedures to be established and complied with on-board, in order to ensure that the space is safe for entry.
2

A tank that contained a cargo of vegetable oil has been rough-washed with salt water. It has then been allowed to lie untouched for two days. Which of the following toxic substances is likely to have been released into the atmosphere within the tank over this period? Select the ONE correct answer:

Ваша відповідь правильна:

Hydrogen sulphide.
3

You are the Responsible Person for a tank entry operation, where those working inside are being supplied with air from a compressor in the machinery space. Who will you advise of this arrangement and why? There is one correct answer for “who”, and one correct answer for “why”. Select the TWO correct answers:

Ваша відповідь правильна:

So that those in charge of the equipment understand its current purpose and do not shut the compressor down until the work is completed.
4

When entry into an enclosed space is about to take place, what information should the Officer on Watch be given? Select all answers that you think apply:

Ваша відповідь правильна:

The space to be entered.; The purpose of the entry.; Any associated systems that have been isolated.; The intended duration of the entry.; The identity of the Responsible Person.
5

What is the normal oxygen content in fresh air (by volume)? Select the ONE correct answer:

Ваша відповідь правильна:

20,9 %.
6

A ship has a minimum safe complement of four personal oxygen monitors. Two are to be sent ashore for service in the next port but there is a programme of ballast tank inspections scheduled in that port. What could be done to ensure that the ship’s personnel continue to work under safe conditions? Select all answers that you think apply:

Ваша відповідь правильна:

Arrange temporary replacements until the ship’s monitors are returned.; Change the schedule of entry operations, so that any person going inside has a monitor at all times.
7

You are to enter an enclosed space as part of a small team to undertake some cleaning. How will you ensure that the operation continues in a safe manner? Select the ONE correct answer:

Ваша відповідь правильна:

All of us entering the space, as well as the attendant at the entrance, must remain alert and watch for any changes in circumstances that may render the space unsafe.
8

In respect of training on entry enclosed spaces, which of the following is the employer required to do? Select the ONE best answer:

Ваша відповідь правильна:

Provide any necessary training, instruction and information to employees in order to ensure, that the regulations pertaining to entry into enclosed spaces are complied with.
9

You are to assist in “securing” a cargo tank after a cleaning squad have been inside. All personnel and small gear are accounted for and the space is not to be re-entered. Another crew member is returning the safety and working equipment to storage and the Responsible Person is taking care of notifications, documentation and the removal of isolation-tags and notices in the control room. What should you do at or near the tank itself? Select all answers that you think apply:

Ваша відповідь правильна:

Close the lids.
10

You are to be part of a two-man team to enter an enclosed lower deck in the forecastle head. You are to wear self-contained breathing apparatus and the Responsible Person has decided that a lifeline is to be used. What must you ensure you can do with that lifeline? Select the ONE best answer:

Ваша відповідь правильна:

That I can easily detach it, if it becomes tangled on the steps or other fittings in the forecastle.
11

What does the term “lock out and tag out” refer to? Select the ONE correct answer:

Ваша відповідь правильна:

The securing and labelling of equipment against inadvertent use.
12

Liquid chemicals can be dangerous to health in which of the following ways? Select all answers that you think apply:

Ваша відповідь правильна:

Inhalation of the fumes.; Ingestion, or swallowing the liquid.; Skin contact.; Absorption or penetration through the skin.
13

A storeroom is normally continuously ventilated but it suffers an electrical failure and the ventilation fan has been stopped for 3 hours. How would you now consider that storeroom? Select the ONE correct answer:

Ваша відповідь правильна:

As dangerous. It must be treated as an enclosed space for the purpose of entry procedures.
14

How can illumination safely be provided or improved in a confined space? Select all answers that you think apply:

Ваша відповідь правильна:

Remove additional manhole covers and lids.; Install temporary lighting.; Issue flashlights.
15

Who is permitted to test the atmosphere in an enclosed space for the purposes of authorising entry? Select the ONE correct answer:

Ваша відповідь правильна:

Only a person trained in the use of the equipment and listed as an Approved Operator.
16

A forecastle store containing paint and chemicals is normally continuously ventilated but the area has suffered an electrical failure and the ventilation fan has been stopped overnight. How would you now consider that storeroom? Select the ONE correct answer:

Ваша відповідь правильна:

As dangerous. It must be treated as an enclosed space for the purpose of entry procedures.
17

When is an enclosed space considered safe and fit for unprotected entry? Select the ONE correct answer:

Ваша відповідь правильна:

Only when it has been tested and certified as “gas free” by a competent person and approved for entry.
18

A person appointed by the Master, or by the company, to take charge of an operation, such as entry into an enclosed space. This is the definition of which of the following? Select the ONE best answer:

Ваша відповідь правильна:

A “Responsible Person”.
19

A crew-member is to be sent into an enclosed space to remove remaining sludge deposits from between the frames. Fumes are present. Which of the following could the crew member use? Select all answers that you think apply:

Ваша відповідь правильна:

A self-contained breathing apparatus.; An externally-generated air supply.
20

Assessment has revealed that the atmosphere in an enclosed space is unsafe but immediate entry is considered necessary. What should those who enter the space be wearing? Select the ONE correct answer:

Ваша відповідь правильна:

Breathing Apparatus.
21

A cleaning and repair job is to be done in a tank. The tank is heavily framed, of an awkward shape, with several distinct sections and built over and around a number of other storage tanks. Access lids and ventilation pipes are all at the forward end of the tank. How can it be ensured that the conditions in the area of the repair are fully checked? Select the ONE correct answer:

Ваша відповідь правильна:

Assess and plan for an initial entry, carry out further assessment within the space and then plan the entry for the repair on the basis of the additional information obtained.
22

Which one of the following substances is toxic and is released from vegetable fish and animal oils during interaction with sea water? Select the ONE correct answer:

Ваша відповідь правильна:

Hydrogen sulphide.
23

Entry into an unsafe or suspect atmosphere should be considered as what kind of event? Select the ONE correct answer:

Ваша відповідь правильна:

Extraordinary.
24

Which of the following options might cause a lack of oxygen in an enclosed space? Select all answers that you think apply:

Ваша відповідь правильна:

Hydrogen may have been produced in a cathodically-protected cargo tank used for ballast.; Oxygen may have been displaced by the use of carbon dioxide or other fire-extinguishing agent.; Inert gas may have been introduced into the space.; Corrosion may have occurred.
25

Can a combustible gas detector be used to detect a gas other than the standard gas on which it is calibrated? Select the ONE best answer:

Ваша відповідь правильна:

Yes, but only for a limited range of similar gases and reference must be made to the calibration curves supplied with the meter.
26

Which of the following is the definition of a gas free compartment? Select the ONE best answer:

Ваша відповідь правильна:

One that is in a suitable and safe condition, such that sufficient fresh air has been introduced into it to lower the level of any flammable, toxic or inert gas to that required for a specified purpose.
27

Which of the following items would be part of “securing” after entry into an enclosed space is completed and all personnel have safely exited? Select all answers that you think apply:

Ваша відповідь правильна:

Removal of any “safe to enter” tags.; Stopping ventilation (unless the space is to be entered again later).; Withdrawal of any air-lines, electrical leads, ejectors, ropes and other similar equipment.; Closing of any lids (unless the space is to be entered again later).
28

In what parts of an enclosed space should the atmosphere be tested prior to entry? Select the ONE correct answer:

Ваша відповідь правильна:

At multiple levels and in different sections of the space, to increase the possibility of detecting pockets of gas that might remain in less well ventilated areas.
29

If an air-line is being fed from a compressor in the machinery space, who should be informed? Select the ONE best option:

Ваша відповідь правильна:

The Engineer on Watch, so that the compressor is not shut-down until the work is completed.
30

You are the Responsible Person for a cleaning job in a cargo tank. Why must you check around inside the space once cleaning is completed? Select the ONE best answer:

Ваша відповідь правильна:

To check that no rags, flashlights, lines, clothing or other equipment has been left inside, where it could later be drawn into a pump or valve and damage or block it with serious consequences.
31

If the atmosphere in a compartment is considered to be suspect or unsafe, then it should only be entered for which of the following purposes? Select all answers that you think apply:

Ваша відповідь правильна:

If it is essential for testing purposes, that being not possible from a remote location.; For the safety of life, or of the ship.; For essential operations.
32

If the conditions at the exact job location within an enclosed space cannot be properly assessed, what should be done? Select the ONE correct answer:

Ваша відповідь правильна:

Assessment and planning should be done to allow an initial entry and then further planning will be done once the necessary information has been obtained from inside the space.
33

You are engaged in cleaning out an oil sludge storage tank that has been previously tested and approved for unprotected entry and for which a valid enclosed space entry permit exists. While you are working, you begin to smell cargo vapours. Which of the procedures listed below should be followed? Select all answers that you think apply:

Ваша відповідь правильна:

Immediately exit the tank.; The appropriate tag should be placed on the access prohibiting further entry.; The Responsible Person should be notified.; The enclosed space entry permit should be cancelled.
34

Breathing apparatus should be inspected and tested periodically, as per the company maintenance schedule. When else should it be tested for correct operation? Select the ONE correct answer:

Ваша відповідь правильна:

Before and after use.
35

If the compressor feeding an air-line breathing apparatus fails and the emergency supply is engaged, what should the wearer immediately do? Select the ONE correct answer:

Ваша відповідь правильна:

Stop work and immediately exit the space.
36

You are assisting outside an enclosed space. A maintenance crew are inside and are using air-line breathing apparatus, supplied from a compressor located on deck close to the manhole cover access. The compressor has an emergency supply in a cylinder connected via a manifold. The compressor suddenly stops. You switch over to the emergency supply straight away, but what should the team inside the space do? Select the ONE correct answer:

Ваша відповідь правильна:

They should immediately stop work and exit the space.
37

What can be used to ensure that no items relevant to the task have been missed during the planning stage? Select the ONE best answer:

Ваша відповідь правильна:

A checklist.
38

You are the attendant at the entrance hatch to a tank where three men, wearing self-contained breathing apparatus, are working inside. You hear the low level audible alarm whistle from one of the sets. What are you going to do? Select the ONE correct answer:

Ваша відповідь правильна:

Look for the user moving immediately towards the exit and assist them once they emerge.
39

Which of the following are standard procedures to observe before entry to an enclosed space? Select all answers that you think apply:

Ваша відповідь правильна:

The atmosphere is tested.; A permit is issued.; Appropriate safety and operational procedures are put in place.
40

What is the first step in any potentially hazardous work task on-board? Select the ONE correct answer:

Ваша відповідь правильна:

Risk assessment.
41

You are the attendant at the entrance to an enclosed cargo hold. Why must you “tally”, or check the crew off as they exit the space after finishing their work inside? Select the ONE correct answer:

Ваша відповідь правильна:

To see if anyone is missing and therefore still inside the space.
42

If a lifeline is to be used, which one of the following is an essential feature? Select the ONE best answer:

Ваша відповідь правильна:

That it can be easily detached by the wearer, in the event that it becomes tangled.
43

To ensure an enclosed space entry operation continues in a safe manner, which of the following conditions should be met? Select the ONE best answer:

Ваша відповідь правильна:

Those who enter the space and also the attendant should remain alert and watch for any changes in circumstances that may render the space unsafe.
44

You are working in a tank that has been previously tested and approved for entry and for which a valid enclosed space entry permit exists. While you are working, you begin to smell cargo vapours. Which of the procedures listed below should be followed? Select all answers that you think apply:

Ваша відповідь правильна:

Further tests should be made.
45

In safety terms, why might you suspend cargo operations that involve spaces adjacent to a tank intended for entry? Select all answers that you think apply:

Ваша відповідь правильна:

Because a valve on common piping might be opened in error, flooding the entered compartment.; Because poisonous fumes expelled from those spaces might be drawn in by mechanical ventilators on the entered space.
46

An emergency has occurred in an enclosed space. Which ONE of the following statements is correct?

Ваша відповідь правильна:

The attendant should not, under any circumstances, enter the space alone or before the rest of the rescue team has arrived.
47

The term “lock out, tag out” refers to which ONE of the following:

Ваша відповідь правильна:

The securing and labelling of equipment against inadvertent use.
48

Which one of the following is an acceptable definition of an enclosed space? Select the ONE correct answer:

Ваша відповідь правильна:

A space which has limited openings for entry and exit, or inadequate ventilation or is not designed for continuous worker occupancy.
49

If unforeseen difficulties or hazards develop, what should happen? Select all answers that you think apply:

Ваша відповідь правильна:

The work in the space should be stopped and the space evacuated.; The safety of the situation should be re-assessed.; Permits should be withdrawn and only re-issued with any appropriate revisions.; Any additional controls deemed necessary by the Responsible Person should be put in place before work resumes.
50

Which of the following are properties of hydrocarbon gas? Select all answers that you think apply:

Правильну відповідь:

Flammable.; Toxic.

Ваша відповідь:

Toxic.; Viscous.
51

What is the biggest hazard associated with entry into an enclosed space? Select the ONE correct answer:

Ваша відповідь правильна:

The potentially harmful atmosphere inside.
52

According to IMO requirements, what is the minimum steady reading that must be obtained on an oxygen analyser before unprotected entry into an enclosed space can be permitted? Select the ONE correct answer:

Ваша відповідь правильна:

21 %.
53

What are the employer’s legal obligations in respect of the provision of training on entry into enclosed spaces? Select the ONE correct answer:

Ваша відповідь правильна:

They must provide the necessary training, instruction and information to employees in order to ensure that the regulations pertaining to entry into enclosed spaces are complied with.
54

What preventative measures might be taken to prevent a valve being opened by mistake while entry into an enclosed space is taking place? Select all answers that you think apply:

Ваша відповідь правильна:

By fitting a chain and padlock.; By fitting a specialised locking device.; By applying a heavy-duty cable-tie.; By fitting a numbered seal.; By fixing a safety notice or Isolation-tag.
55

A “Competent Person” should have which of the following?

Ваша відповідь правильна:

Sufficient theoretical knowledge and practical experience to make an informed assessment of the likelihood of a dangerous atmosphere being present or subsequently arising in the space.
56

A crew member doing some cleaning in the bottom a cargo tank reports smelling fumes. What should happen? Select all answers that you think apply:

Ваша відповідь правильна:

The work should be stopped and everyone should leave the space immediately.; The safety of the situation should be re-assessed.; Permits should be withdrawn and only re-issued with any appropriate revisions.; Any additional controls deemed necessary by the Responsible Person should be put in place before work resumes.
57

In relation to entry into an enclosed space, what is “approved equipment”? Select the ONE best answer:

Ваша відповідь правильна:

Equipment of a design tested and approved by an appropriate authority for use in a specified hazardous environment.
58

You are assigned as the attendant at the entrance to 3 starboard double bottom ballast tank, inside which the Chief Officer and Cadet are carrying out an inspection. What do you understand you are permitted to do? Select the ONE best answer:

Ваша відповідь правильна:

I cannot be assigned to other duties while I am attendant and must remain at the entrance to the space while it is occupied.
59

What should be the status of the ventilation during testing of the atmosphere in an enclosed space prior to entry? Select the ONE correct answer:

Ваша відповідь правильна:

It should have been stopped about 10 minutes before testing and remain stopped until testing is complete.
60

If enclosed space entry is underway, using an air-line supply and the purpose of the air-lines is not immediately apparent, what should the Responsible Person do? Select the ONE correct answer:

Правильну відповідь:

Post notices at appropriate positions.

Ваша відповідь:

Instruct the attendant to patrol the deck to ensure nobody interferes with the airlines.
61

You are to test the atmosphere in a tank prior to entry for cleaning and maintenance purposes. Where will you take the readings? Select the ONE correct answer:

Ваша відповідь правильна:

At multiple levels and in different sections of the space, through the various lids and vents, to increase the possibility of detecting pockets of gas that might remain in less well ventilated areas.
62

You are the designated attendant at the top of a tank. Three crew members are inside overhauling a faulty pump. You see one man collapse and hear the other two shouting. What are you going to do? Select the ONE correct answer:

Ваша відповідь правильна:

I will sound the alarm immediately, report the situation to the Responsible Person and assist the rescue team once they have arrived.
63

How should you, as an employee, approach safety training on-board? Select all answers that you think apply:

Ваша відповідь правильна:

Attend scheduled training sessions.; Read and understand applicable safety manuals, circulars and other material.; Actively engage in the on-board safety system.
64

Which instrument gives readouts of gas concentration in terms of the Lower Flammable Limit? Select the ONE correct answer:

Ваша відповідь правильна:

A combustible gas indicator.
65

You are to assist in “securing” a cargo tank after a cleaning squad have been inside. All personnel and small gear are accounted for and the space is not to be re-entered. Another crew member is returning the safety and working equipment to storage and the Responsible Person is taking care of notifications, documentation and the removal of isolation-tags and notices in the control room. What should you do at or near the tank itself? Select all answers that you think apply:

Ваша відповідь правильна:

Remove green “safe to enter” tag.; Stop the ventilation fan.; Withdraw lines and hoses, etc.
66

If the attendant hears a low level audible alarm whistle from a self-contained breathing apparatus coming from inside an enclosed space, what should they do? Select the ONE correct answer:

Ваша відповідь правильна:

Look for the user moving towards the exit and assist them once they emerge.
67

If the minimum safe complement of personal oxygen monitors on a vessel is three and two are sent ashore for repair, what options are available to the ship’s personnel to ensure safety continues to be observed? Select all answers that you think apply:

Ваша відповідь правильна:

Temporary replacements should be obtained until the ship’s equipment is repaired and returned.; The schedule of enclosed space entry operations should be changed, to ensure no entry takes place without the remaining meter.
68

You are the Responsible Person for a maintenance inspection in a ship’s side ballast tank. The after access manhole has been removed but the compartment is still very dark. How might you safely improve the situation? Select all answers that you think apply:

Ваша відповідь правильна:

Issue flashlights.
69

Who can test the atmosphere in an enclosed space for the purposes of authorising entry? Select the ONE correct answer:

Ваша відповідь правильна:

Only a person trained in the use of the equipment and listed as an Approved Operator (or similar) under a ship’s SMS.
70

You are to test the atmosphere in a tank prior to entry. If at all, how will you adjust the ventilation? Select the ONE correct answer:

Ваша відповідь правильна:

I will stop it about 10 minutes before testing and not re-start it until testing is complete.
71

Some cargoes are “carcinogenic”. What does this mean? Select the ONE correct answer:

Ваша відповідь правильна:

They can generate cancer.
72

You are the Responsible Person for a maintenance inspection in a ship’s side ballast tank. The after access manhole has been removed but the compartment is still very dark. How might you safely improve the situation? Select all answers that you think apply:

Ваша відповідь правильна:

Remove additional manhole covers and lids.; Install temporary lighting.
73

According to this module, what is the normal oxygen content (by volume) in fresh air? Select the ONE correct answer:

Ваша відповідь правильна:

20,9 %.
74

Which of the following options might cause a lack of oxygen in an enclosed space? Select all answers that you think apply:

Ваша відповідь правильна:

Corrosion may have occurred.; Oxygen absorbing chemicals may have been present.; Oxygen absorbing cargoes may have been carried.; Gases from volatile cargoes may have displaced the oxygen in the space.
75

Which of the following are standard procedures to observe before entry to an enclosed space? Select all answers that you think apply:

Ваша відповідь правильна:

A Competent Person makes an assessment of the space.; A Responsible Person is appointed to take charge.; The potential hazards are identified.; The space is secured for entry.
76

Whose overall duty is it, to ensure that the plan for entry into an enclosed space is followed? Select the ONE best answer:

Ваша відповідь правильна:

The Responsible Person.
77

When it is required to gas free a cargo tank on an oil tanker after washing, the space is first purged down with inert gas to reduce the hydrocarbon content to 2 % or less by volume. Why is this done? Select the ONE correct answer:

Ваша відповідь правильна:

So that, during subsequent gas freeing, no part of the tank atmosphere is brought within the flammable range.
78

Cargo tank 3 centre has been cleaned and is scheduled for inspection and mopping. You are the Responsible Person. When will you test the atmosphere in the tank? Select all answers that you think apply:

Ваша відповідь правильна:

Before anyone enters the space.; At regular and frequent intervals whilst entry continues.
79

You are engaged in cleaning out an oil sludge storage tank that has been previously tested and approved for unprotected entry and for which a valid enclosed space entry permit exists. While you are working, you begin to smell cargo vapours. Which of the procedures listed below should be followed? Select all answers that you think apply:

Ваша відповідь правильна:

Further tests should be made.
80

You are working in a tank that has been previously tested and approved for entry and for which a valid enclosed space entry permit exists. While you are working, you begin to smell cargo vapours. Which of the procedures listed below should be followed? Select all answers that you think apply:

Ваша відповідь правильна:

Immediately exit the tank.; The appropriate tag should be placed on the access to prohibit further entry.; The Responsible Person should be notified.; The enclosed space entry permit should be cancelled.
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