TOPIC-
CONFINE SPACE
1.
What
Is Confine Space & Give Some Examples Of Confine Space?
Ans:-
A space that has limited or restricted
means of entry or exit and which is not designed for continues worker’s
occupancy and unfavorable natural ventilation. It’s called as confined space.
2.
What
Is Pre-Preparation Operation Of Confine Space?
Ans:-
- Jsa /Jsa
- Risk Assessment
- Permit To Work
- Blanding/Blanking
- Tool Box Talk(TBT)
- Isolation
- Nitrogen Purging/Inert
- Gas Testing (Top, Bottom & Middle)
- Ventilation Natural/Mechanical
- Entry Into Confine Space
3.
Which
Instrument/Equipment We Required In Confine Space?
Ans:-
1) Gas
Detector.
2) Toxic
Clip
3) Air
Blower
4) Paper
or pen
5) Rope
6) Dust
mask
7) Radio
(walky-talky)
8) Disposables
Coverall
9) G.F.C.I.
( Ground Fault Circuit Interrupter)
4.
What
Is The Prime Hazard Of Confine Space?
Ans:
- Atmospheric Hazards:-
a) Oxygen Deficiency below 19.5%
b) Oxygen Enrichment above 23.5%
An oxygen poor atmosphere may exit. An
atmosphere containing less than 19.5% oxygen is consider oxygen deficient
unsafe for human occupancy. And 02 enrichment above 23.5% could result in
greater fire hazards.
5.
Explain
Different Types Of Hazards In Confine Space?
Ans:-
1) Atmospheric Hazards:-
a)
Oxygen Deficiency below 19.5%
b)
Oxygen Enrichment above 23.5%
An
oxygen poor atmosphere may exit. An atmosphere containing less than 19.5%
oxygen is consider oxygen deficient unsafe for human occupancy. And 02
enrichment above 23.5% could result in greater fire hazards.
2) Physical Hazards:-
a)
Falling and flying objects b)
Noise Pollution
c)
Slipper Surface d)
Tripping Hazards
3) Energy Hazards:-
Due
to improper use of electrical equipment or poor wiring there are chances of
electrical shocks and electrocution.
4) Fire and Explosion Hazards:-
A
confined space may be contain flammable gas or vapors and air which may
possibly caused fire and explosion Any mixture between lean and rich mixture is
flammable and if ignited will propagate flame and Presence of combustible
materials like propane, hydrogen sulphide, acetylene etc.
5) Engulfment
Hazards:-
1)
Loose, granular material stored in bins and hoppers.
2)
Flooding of confined space.
3)
Water of sewage flow etc.
6) Temperature
Extremes Hazards:-
a)
Extremely HOT or Cold Temperature
b)
Humidity Factors
c)
Steam cleaning of confined space.
7) Mechanical Hazards:-
Disconnecting
mechanical drives and shafts like mixture, crusher and friction etc.
8) Toxic
Atmosphere:-
Toxic
substances or material like H2S, SO2, Carbon Monoxide, Welding Fumes, Mist,
Dust etc. can cause injury, long term illness and death depending on the
chemical properties & exposure concentration & duration.
6.
Explain
Different Types Of Operation That May Affect The Confine Space?Ans:
-
- Blasting Operation
- Welding Operation
- Chemical Cleaning
- Painting Operation
- Operation
of nearby Facilities
7.
Who
Is Entrant & Explain His Duties and Responsibilities?
Ans:
- A person who physical enters
into a confined space to perform his assigned work.
Responsibilities of
Entrant in confined space :-
1)
To assure that space has been adequately
ventilated.
2)
To assure that space has been adequately
isolated and emptied.
3) To
immediately exit the space without any questions upon the word of an attendant
no matter what are the reasons.
4) Must
be familiar with the work to be performed and with the procedures that apply to
the job.
5)
To use the proper and appropriate
personal protective equipment (PPE).
6)
To know about the hazards of confined
space.
7)
Stay in contact with attendant at all
times.
8)
To follow all safety rules and procedure
of the job.
9) To
know about how to communicate on radio walky-talky while work in confined
space.
10) To
know about the machinery use handling which have been work in confined space?
8.
Who
Is Attendant & Explain His Duties and Responsibilities?
Ans:- A person who remains outside the confined space
and monitor the confined space and monitor the entrants he also safeguards the
space against all un authorized entry he is responsible to protect the entrant
if any incorrect condition arise attendant is also called “Hole Watcher”.
Responsibilities of
attendant in confined space.
a)
To keep records of confined space such
as air results, personal entry and exit.
b)
To arrange emergency assistance, if
needed.
c)
To control access to confined space.
d)
To monitor entrance during the job and during
entry and exit to bell and ensure their safety.
e)
To monitor atmospheric condition.
f)
Maintain continuous communication with
entrant during the job in confined space.
g)
To assist hazards in and outside the space.
h) Know
about Recue procedure and know about the confined space personal protective
equipment.
9.
Who
Is Supervisor & Explain His Duties and Responsibilities?
Ans:-
Duties
and Responsibilities of Supervisor.
To assure adequate
protection provided to the entrants.
To verify all personal
have exit prior to close the space.
To assure all hazard
are made aware to the personnel involved in C.S.
To assure that rescuer
or survivals are available prior to entry.
Make sure the permit is
completed.
See that all test and
procedure done.
Determines that all team members and equipment are in place and
ready to work in confined space.
10.
What
Is GFCI?
Ans:
- It is a fast acting device which
monitors the flow of current. It monitor’s for any leakage of currant &
shut the power down quickly.(Always use with electrical tools). In damp or wet
areas can use GFCI.
11.
What
Is LEL?
Ans:
- It is the lowest concentration of a gas in the atmosphere that will result in
a flammable mixture.
12.
What
Is PEL?
Ans:The level of air contaminants that represents an acceptable exposure level as specified in standards set by a national governmentagency; generally expressed as 8-hour time-weighted average concentrations.
13.
WHAT
IS UEL?
Ans. Upper Explosive Limit (UEL) is the maximum concentration (% in air) of
a substance in air which is required for ignition. Concentration above the UEL
will not ignite. Above the UEL, the mixture is called "rich".
