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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

Which one of the following is not a confined space?

Office Room

Silo

Tank

下水道

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

Oxygen

易燃气体

Toxic gases

None of the above

使用1000 CFM排气风扇对5000 FT3坦克进行通风？进入前要通风多长时间？

5 minutes

50分钟

10 minutes

24 hours

Double block and bleed system is used for

Ventilation

隔离

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

Body harness and lifeline

梯子

脚手架

Crane

在易燃气氛中使用的非火花工具的MOC是

Copper-Beryllium Alloy (Beryllium bronze)

Aluminium

Forged Steel

聚合物

必须在限制空间内进行染料渗透测试

With a Standby Look out man outside

Forced Ventilation using air inside the vessels

All of the above

None of the above

对于像焊接在密闭空间中的焊接一样的热工作，易燃性水平必须为

At Lower Explosive Limit (LEL)

At Upper Explosive limit (UEL)

不到LEL的10％

In between LEL and UEL

Toxic gas composition must be

Below PEL

Below IDLH

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

Melting Point

Boiling Point

Solubility

Specific Gravity

以下哪一项会导致受限空间内部的氧气不足？

Rust formation

焊接

以上两个

None of the above

我们可以使用氧气缸清除容器吗？

Yeah

没有

Respiratory protection is required when entry into

惰性气氛

IDLH atmosphere

Toxic gas Composition below PEL

A and C

Confined space entry permit

is a checklist

helps prepare the team for safe entry

以上两个

None of the above

Inhalation of toluene causes

立即燃烧鼻子，喉咙和呼吸道

drunken-type actions, unconsciousness

Oxygen deficiency is when

Oxygen <19.5%

Oxygen >23.5%

氧= 21％

None of the above

To prevent Slip hazard in Confined space

Provide Adequate Illumination

Carry out Visual Inspection

确保良好的管家

All of the above

Before entering the Confined Space, it has to be

Isolated from sources of hazardous material

Isolated from all supplies of electricity

以上两个

None of the above

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

人孔应被屏障覆盖，并不是所有的入口

一个人可以和安全经理一起进入船只内部

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

封闭的空间Entry Permit is Which type of Hazard Control?

Elimination

Substitution

Engineering Control

Administrative Control

In the hierarchy of control measures which comes first?

个人保护设备

Elimination

Engineering Control

Administrative Control

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)

The recommended Voltage level for Lighting inside the confined space is

24 V

110 V

230 V

以上任何一个

对或错？TLV -TWA：8小时/天；TLV-Stel：15分钟

真的

False

For Welding inside Confined Space Which is recommended?

Push - Pull System

Forced Ventilation

局部排气通风系统

None of the above

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

Choose the Odd Man out of the following

Ammonia

甲烷

硫化氢

Carbon Monoxide

通风有助于

在限制空间内提供足够的氧气

To remove Heat

减少有毒气体和烟气

All of the above