Use of PPE

8/12/2019 Use of PPE

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Use of Personal ProtectiveEquipments

Manoj Kr. Ray

SM(F&S)


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PPE

NON-RESPIRATORY

PROTECTION

RESPIRATORY

PROTECTION


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NON-RESPIRATORY PROTECTION

FACE AND EYE PROTECTION

Operation Hazards Recommended

Protector

Burning, cutting, gas

welding

Sparks, harmful rays,

molten metal flying

particles

Welding goggles (Eye-cup type

or plate type tinted lenses)

Chemical handling Splash, acid burns, fumes Clear goggles and/or shield

Chipping Flying particles Clear goggles (chipper)

Electric (arc) welding Spark, intense rays, molten

metal

Welding hood (with tinted

lenses)


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Operation Hazards Recommended Protector

Furnace operations Glare, heat Cobalt glasses, or welding

goggles (tinted lenses)

Grinding Flying particles Clear goggles or faceshield (chipper goggles)

Laboratory Chemical splash, glass

breakage

Clear goggles or face

shield

Machining Flying particles Clear chipper goggles orface shield


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HEAD PROTECTION :

Safety helmets are rigid headgears of different materials designed toprotect the head not only from impact but from flying particles andelectric shock or any combination of the three.

Safety Helmet


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HAND PROTECTION :

Protective gloves are required to be used for protection of the handsagainst the injurious effect of chemicals, heat, heavy material, oil,electricity etc.

Rubber Gloves

PVC GlovesCanvas GlovesElectrical GlovesHeat Resistance GlovesLeather Gloves

Leather Palm Gloves Chemical Resistance Gloves Welding Gloves


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FOOT PROTECTION :

Rubber boots are used to protect against chemical splashes. Safetyshoes are used to protect against heavy weight.


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BODY PROTECTION :

Rubber and PVC aprons : These provideprotection for the body when working with

chemicals, aromatics or solvents.

Leather aprons : These are used to preventburns from flying sparks.


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HEARING PROTECTION :

Any unwanted sound is called noise. The louder the noise, the more it isdamaging. Also the longer the noise exposure, the greater is the damage

to human hearing mechanism. The threshold limit for noise for 8 hoursduration is 90dB.

Ear Plugs :This type of plug is inserted into ear canals and variesconsiderably both in design and material. Materials used are

rubber, soft or hard plastic, foam or cotton.

Ear Muffs :These cup or muff type devices cover the external earto provide an acoustic(Sound) barrier.


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SAFETY HARNESS

All employees must use safety harness to give protection inperforming jobs at elevated locations where adequate

protection against falling is not available. Safety harness with alife line fastened at the back should always be used wheneverone works on an elevated location or enters into the tanks orbins so that he can be easily lifted and brought out.


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Gas Hazards - Respiratory Protection


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Gas Hazards & Respiratory Protection

Objective To Identify the Respiratory hazards

To Understand the Effects of Contaminants onHuman Body

Definitions/Terminology

Selection of Respiratory Protection

Types of Respiratory Protection

Uses and Limitation of Respiratory Protection


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Respiratory Hazards

Respiratory Hazards in Work Environment may contain:

Nucience Dust

Toxic Dust

Metallic Fumes Volatile Organic Compounds

Vapours

Toxic Gases

Oxygen deficient atmosphere


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Oxygen Deficiency

Oxygen content inair Sign and symptoms ofpersons at rest

12% to 14% Respiration deeper, pulse up, co-

ordination poor

10% to 12% Respiration fast & shallow, giddiness,poor judgement, lips blue.

8% to 10% Nausea, vomiting, unconscious-ness,

ashen face.

6% to 8% 8 min-100% fatal, 6 min-50% fatal, 4-5

min

Recovery with treatment.

4% Coma in 40 secs., convulsion, respiration

ceases, death.

Breathable Air as per OSHA : 19.5% to 23.5% of Oxygen


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Material Safety Data Sheets (MSDS)

Material Data Sheet should be refereed for obtaininginformation about health hazards posed by a chemical.

MSDS gives the properties, TLV / STEL / health effects / Firstaid and Spill containment procedures.


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Particulate filter Gas MaskChemical / Canister

Air Purifying

Airline SCBA / SCUBA Escape

Air Supplied

Respiratory Protection

Types of Respiratory Protection Equipment


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Air Purifying respirators

Air purifying equipment contains a face / nosemask with a filter / cartridge to absorb thecontaminant present in the atmosphere.

Air Purifying respirators are classified into:

Particulate Respirators

Gas Masks


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Particulate Respirators These are used for filtering particulate

contaminants present in the atmosphere.

Contaminants in atmosphere may be:

Non toxic Dust Toxic dust

Metallic fumes

Oil mist / Paint

Two types are available Disposable

Filter Changing


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Gas Masks - Chemical Cartridge / CanisterRespirators

The gas mask consist of a cartridge or a canister eitherdirectly mounted to or connected through a flexible

tube to a full or half ace mask. Cartridge / canister is filled with chemicals to remove

the contaminants from the air through chemicalreaction.

Duration of the canister depends on: Concentration of the air contaminants

Duration of exposure


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Limitations of Air Purifying Respirators: Should be used in atmospheres containing

Oxygen atleast 19.5 %

Should not be used for Emergency escape


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Air supplied respirators

Air Line Respirators : It consists of a full face maskconnected to a source of fresh air through a hose. The airmay be supplied to the hose by a blower, portable aircompressor or a battery of compressed air cylinders.

Plant air or oxygen should not be used as a source of

air.Length of hose should not exceed 300 ft.

In IDLH atmospheres airline respirator along with SCBAshould be used.

In confined spaces life line along with retrieving deviceshould be used.


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Self contained Breathing apparatus (SCBA):Consists of:

Compressed cylinder& back plate.

Full face mask

Air supply hose

Pressure regulator

Pressure Gauge

Low pressure alarm


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Escape Set This is for a short duration of 10 Minutesand does not have any warning device.

Self contained under water breathing apparatus isused for under water operations and is similar to

SCBA.


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Ai li d i t


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Air supplied respirators -

Advantages and Limitations

Airline respirators

Length of hose is limited


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Thank You

Use of PPE

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