Test Your knowledge on Confined Space – Online Quiz

Entry into Confined Space is an unavoidable task in any Chemical Process Industry and it can be deadly. Especially for Cleaning, Inspection, Repairs and maintenance of the vessels and equipment, the confined space entry is necessary. According to Trevor KIletz’s statement in Still going wrong, preparing the confined space for entry is like sharpening the saw for woodcutting – the time well spent. This Confined Space online quiz module helps to understand the confined space, entry permit, hazards associated and the safety systems to be followed.

Confined Space

Confined space........

Confined space Has limited means of entry/exit(

is not designed for continuous occupancy

is large enough for a person to enter to perform tasks

all of the above

None

Which one of the following is not a confined space?

Office Room

Silo

Tank

Sewer

None

In a Confined Space, Which one is to be tested first?

Oxygen

Flammable gases

Toxic gases

None of the above

None

5000 ft3 tank is ventilated using 1000 cfm exhaust fan? How long has it to be ventilated before entry?

5 minutes

50 minutes

10 minutes

24 hours

None

Double block and bleed system is used for

Ventilation

Isolation

None

Which PPE has to be used for Top entry inside a Reactor?

Body harness and lifeline

Ladder

Scaffolding

Crane

None

The MOC of non- sparking tool used in flammable atmosphere is

Copper-Beryllium Alloy (Beryllium bronze)

Aluminium

Forged Steel

Polymer

None

Dye penetrant test inside a Confined space has to be carried out

With a Standby Look out man outside

Forced Ventilation using air inside the vessels

All of the above

None of the above

None

For Hot work like welding inside Confined space, the Flammability level must be

At Lower Explosive Limit (LEL)

At Upper Explosive limit (UEL)

Less than 10% of LEL

In between LEL and UEL

None

10.

Toxic gas composition must be

Below PEL

Below IDLH

None

11.

What is the property of the Chemical which is helpful in Atmospheric testing?

Melting Point

Boiling Point

Solubility

Specific Gravity

None

12.

Which one of the following can cause Oxygen deficiency inside the Confined space?

Rust formation

Welding

Both of the above

None of the above

None

13.

Can we use Oxygen cylinders for purging the vessel?

Yeah

Nope

None

14.

Respiratory protection is required when entry into

Inert Atmosphere

IDLH atmosphere

Toxic gas Composition below PEL

A and C

None

15.

Confined space entry permit

is a checklist

helps prepare the team for safe entry

Both of the above

None of the above

None

16.

Inhalation of toluene causes

immediate burning of the nose, throat and respiratory tract

drunken-type actions, unconsciousness

None

17.

Oxygen deficiency is when

Oxygen <19.5%

Oxygen >23.5%

Oxygen =21%

None of the above

None

18.

To prevent Slip hazard in Confined space

Provide Adequate Illumination

Carry out Visual Inspection

Ensure good housekeeping

All of the above

None

19.

Before entering the Confined Space, it has to be

Isolated from sources of hazardous material

Isolated from all supplies of electricity

Both of the above

None of the above

None

20.

If vessel is open but entry is not yet authorized

One can put the head inside for Visual Inspection

One can enter the vessel by keeping the attendant outside

The manhole should be covered by a barrier and entry is not alllowed

One can enter inside the vessel along with Safety Manager

None

21.

In Confined Space, to prevent misuse of nitrogen in place of air

Different types of connections for Air and Nitrogen

Odorizing the Nitrogen

Color Coding of Pipelines and Accessories

All of the above

None

22.

Confined Space Entry Permit is Which type of Hazard Control?

Elimination

Substitution

Engineering Control

Administrative Control

None

23.

In the hierarchy of control measures which comes first?

Personal Protective Equipment

Elimination

Engineering Control

Administrative Control

None

24.

Threshold Limit Values (TLV) was established by

National Institute Of Safety and Health (NIOSH)

American Conference of Government Industrial Hygienists (ACGIH)

Occupational Safety and Health Administration (OSHA)

International Organization for Standardization (ISO)

None

25.

The recommended Voltage level for Lighting inside the confined space is

24 V

110 V

230 V

Any of the above

None

26.

True or False? TLV - TWA: 8 Hours/Day; TLV-STEL: 15 minutes

True

False

None

27.

For Welding inside Confined Space Which is recommended?

Push - Pull System

Forced Ventilation

Local Exhaust Ventilation System

None of the above

None

28.

Engulfment may result in a Confined Space due to

Collapsing loosely packed material - Eg Catalyst, Cement Clinker, Fluor etc

Stepping on loosely packed particles - Like in Silo

Inadvertent opening of feed lines - Eg Slurry Line, Pneumatic Conveyor etc

All of the above

None

29.

Choose the Odd Man out of the following

Ammonia

Methane

Hydrogen Sulfide

Carbon Monoxide

None

30.

Ventilation helps to

Provide adequate Oxygen inside Confined Space

To remove Heat

To reduce Toxic gas and Fumes

All of the above

None

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