Extended AccessSafety Training

7/31/2019 Extended AccessSafety Training

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Extended Access Safety TrainingHazards in a laboratory are primarily: (1) Chemical and (2) Electrical. Fire hazards result

from either one or both of the above sources. In this training we arc primarily concerned about

what to do in the event of a mishap. First and foremost, someone must be within hearing distance

when you work in a laboratory. This ensures that you get immediate help when required. Most of

the chemicals you will be working with fall into these hazard classes: Corrosive, Flammable or

Compressed Gas. Although all are hazardous to your health, you can minimize this hazard byprotecting yourself from exposure with personal protective equipment (PPE). Latex gloves offer

no relevant protection from chemicals. Always use nitrite gloves. When working with larger

quantities or more hazardous compounds like HF, a chemical resistant glove should be worn.

When you enter a lab, you should at least be wearing safety goggles. And when you plan

to work with AN V quantity of HF, wear a face shield over the safety glasses or goggles. Aprons

are required for protection from splashes to the body. Never wear shorts, skirts and nylon

stockings, or sandals in the lab.

If you were to splash a couple of drops of acid on your hand, the area would first begin to

itch. Eventually, the skin will become so dehydrated that it will burn. If you have been working

with acids and notice an itch, run cold water on the area for at least 15 minutes. In the case of a

larger spill, head for the emergency shower. In case of an HF splash run cold water or shower for

15 minutes, then apply 2% Calcium gluconate paste and seek medical attention. If acid is spilledon a leather article, you should throw it out. Acids bind with to leather irreversibly.

Never mix concentrated hydrochloric and sulfuric acids. Adding HCI to concentrated

sulfuric acid dehydrates the HCI to release 250 times its volume in gas. HCI, like most corrosive

gases, is extremely toxic and damaging to the respiratory system.

Acids must be added to water to avoid local boiling, an exothermic reaction which can

result in an explosion. This is especially known to happen when water is splashed into sulfuric

acid. Piranha Clean (Hydrogen peroxide and Sulfuric acid in the ratio 1:3) should he prepared

similarly by adding sulfuric acid to hydrogen peroxide. Similarly, when adding Sodium

hydroxide to water you must cool the mixture and take care not to add it all at one time since its

dissolution generates high amounts of heat.

Bases feel slimy and soapy, but that is actually a sign of the skin disintegrating. When

youve had a base spilled on you, you wont get warning signs, like the burning sensation from anacid spill. The base destroys nerve endings which are your pain sensors quickly and more

efficiently than acid. There is no dehydration here but much faster hydrolysis at work. Always be

alert to spills and splashes, especially into the eyes, when working with basic compounds.

Always bring the MSDS so the doctor will know exactly what compound to treat for. MSDSs can

be found on the NCF website and in 3064 ERF

Flammable liquids dry out the skin. Some may act as carriers of toxic compounds

through the skin, and others can be toxic when absorbed through the skin themselves like

ethoxyethanol (EGEE) (ethylene glycol monoethyl ether), a component of the Spin-On Boron.

Glycol ethers have been found to cause birth defects, reduce sperm counts and damage testicles in

lab animals. All glycol ethers can reach a developing fetus and can enter the mothers breast milk.

Chemicals can be classified as (1) Acids, (2) Bases and (3) Solvents and Neutrals.

In all cases some basic rules are to be followed:(1) Never wear contact lenses while working in a laboratory.

(2) See a physician immediately after accidental contact with chemicals.

(3) Never attempt to handle a spill or fire you are not equipped to.

(4) All aid should be given without risk to ones self.(5) In the case of volatile or fuming chemicals, ventilate area, remove all source of

ignition, use self-contained breathing apparatus and stay upwind.

(6) Never induce vomiting in an unconscious person.


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(7) Never give mouth to mouth resuscitation.

(8) Never shake hands, pat in the hack, run or indulge in horseplay inside the cleanroom.

We shall discuss only frequently used chemicals, their hazards and measure the

event of mishaps.

Acids

Acetic Acid: Corrosive, Lachrymator, Mutagen and Flammable.

First Aid:Eyes : Irrigate eyes for 15mins. Roll eye balls so that the eyes are well flushed.

Skin : Remove contaminated clothing and rinse affected area for 15min.

Ingestion : DO NOT induce vomiting. Give 2 - 4 cups of milk or water.Inhalation : Remove to fresh air. Give oxygen if breathing is difficult. Give artificial

respiration if necessary with oxygen and a mechanical device like bag and mask.

DO NOT give mouth to mouth respiration.

Fire Fighting: CO2 or inert chemical extinguisher only. No water.

Accidental Release Measures:

Personal Protective Equipment: Goggles, gloves and lab coat. Face shield and respirator for large

spills. Dilute with water if spill is small and absorb in suitable absorbent (spill mats). If spill is

large use vapor suppressors like Calcium Carbonate, vapor suppressing foam or Soda ash

(Sodium Carbonate). Sprinkle neutralizer on spill area and mop up with absorbent.

Aluminum Etchant Type A: Corrosive

First Aid:

Eyes : Flush with water for 15 mins

Skin : Remove contaminated clothing. Flush water for 15 mins. Cover with moist

baking soda (Sodium hydrogen carbonate or Sodium bicarbonate).

Ingestion : DO NOT induce vomiting. Give milk of magnesia (magnesium hydroxide, E.g.Pepto-Bismol) or beaten egg with water.

Inhalation : Remove to fresh air. Give oxygen if necessary. Give artificial respiration if

necessary.


Personal Protective Equipment: Face shield, rubber gloves and lab coat. Respirator for large

spills. Absorb in suitable absorbent. Neutralize with acid neutralizer inside the container.

Sprinkle neutralizer on spill area and mop up with absorbent.


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Buffered Oxide Etch: Corrosive

First Aid:

Eyes : Flush with of water for 15 mins. Keep ice over eyes till reaching emergency room.Skin : Remove contaminated clothing and flush with water for 15 mins. Apply 2%

Calcium gluconate paste.

Ingestion : Do not induce vomiting. Give large quantities of milk or milk of magnesia.

Inhalation : Send to hospital immediately. Give artificial respiration if necessary.


Personal Protective Equipment: Face Shield, rubber gloves and apron

Absorb in spill absorbent or sand or earth. Soda ash and calcium carbonate (most

preferred) can also be used.

Bromine: Corrosive, oxidizer and toxic.

First Aid:

Eyes and skin : Remove contaminated clothing and flush with water for 15 mins.

Ingestion : DO NOT induce vomiting. Give large quantities of water.Inhalation : Remove to fresh air immediately. Give oxygen and artificial respiration as

necessary.


Personal Protective Equipment: Face Shield, rubber gloves and apron.

Absorb on inert material and neutralize with one of potassium carbonate or sodium carbonate orsodium bicarbonate mixed with sodium thiosulphate. Place in a tightly sealed container.

Chromium Etchant CEP 200: Corrosive and oxidizer.

First Aid:

Eyes : Wash with water for 15 mins

Skin : Remove all contaminated clothing and rinse affected area for 15mins

Ingestion : Give lots of water to drink

Inhalation : Remove to fresh air. Give artificial respiration if necessary.Fire

Fighting

: One of water, dry chemical, chemical foam, alcohol resistant foam extinguisher.


Personal Protective Equipment: Goggles, gloves and lab coat.

Absorb with inert material like spill pillows and keep tightly sealed in a container.


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Copper Etchant Type 100/200: Corrosive.

First Aid:

Eyes and skin : Remove contaminated clothing and flush with water for l5mins.

Ingestion : DO NOTinduce vomiting. Give water or milk or milk of magnesia.Inhalation : Remove to fresh air. Give oxygen or artificial respiration as necessary.


Personal Protective Equipment: Goggles, gloves and lab coat. Respirator if spill is large.

Absorb on inert materials like spill pillows and neutralize with soda ash (sodium

carbonate) or lime (calcium carbonate).

Copper Etchant Type APS: Oxidizer.

First Aid:

Eyes and skin : Remove contaminated clothing and flush with water for 15 mins.

Ingestion : DO NOTinduce vomiting. Give water or milk.Inhalation : Remove to fresh air. Give oxygen or artificial respiration as necessary.

Fire Fighting: Water. No CO2 or gas filled extinguishers.



Mop up in inert material and place in a tightly sealed container.

Hydrochloric Acid: Corrosive

First Aid:

Eyes : Flush with water for 15 mins

Skin : Remove contaminated clothing. Flush water for 15 mins. Cover with moist bakingsoda (Sodium hydrogen carbonate or Sodium bicarbonate).

Ingestion : DO NOTinduce vomiting. Give milk of magnesia (magnesium hydroxide, E.g.Pepto-Bismol) or beaten egg with water.

Inhalation : Remove to fresh air. Give oxygen if necessary. Give artificial respiration if

necessary.


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Gold Etchant: Oxidizer

First Aid:

Eyes and Skin :Remove contaminated clothing and rinse thoroughly for 1 5mins.Ingestion : Induce vomiting in consciousperson only. Give large quantities of milk or

water.

Inhalation : Remove to fresh air. Give artificial respiration if necessary.

Fire Fighting: Water or CO2 or dry chemical only.



Absorb material with sodium sulphite or sodium thiosuiphite mixed with equal quantities of

sodium bicarbonate (soda ash). If these are not available use inert material like sand or earth.

Place in a well sealed containcr.

Bases

351 Developer: Corrosive

First Aid:

Eyes and skin : Remove contaminated clothing and flush with water for 15mins.

Ingeston : DO NOT induce vomiting. Rinse mouth with water and seek medical aid.Inhalaion : Remove to fresh air. Give oxygen and artificial respiration as necessary.


Personal Protective Equipment: Face shield, rubber gloves and lab coat.

Absorb with inert or alkali neutralizing materials and place in a closed container.

Ammonium Hydroxide: Corrosive

First Aid:

Eyes and skin : Remove contaminated clothing and flush with lot of water for I 5mins.

Ingestion : DO NOT induce vomiting. Give water with milk of magnesia.Inhalation : Remove to fresh air. Give oxygen and artificial as necessary.


Personal Protective Equipment: Goggles, gloves, lab coat and respirator.Use vapor suppressants like calcium carbonate if available. Soak up in inert absorbent

and place in a lightly sealed container.


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AZ 400K Developer: Corrosive

First Aid:

Eyes and skin : Remove contaminated clothing and flush with water for 1 5mins.

Ingestion : DO NOT induce vomiting. Give milk or water to dilute stomach contents.Inhalation : Remove to fresh air. Get to a hospital.



Absorb on spill mats and place in a container.

AZ 421K Developer: Highly corrosive.

First Aid:


Ingestion : DO NOT induce vomiting. Give milk or water to dilute stomach contents.Inhalation : Remove to fresh air. Seek medical aid.


Personal Protective Equipment: Face shield, rubber gloves and lab coat.Absorb on spill pillows and neutralize with base neutralizer inside container.

Hydrogen Peroxide: Oxidizer.

First Aid:


Ingestion : DO NOT induce vomiting. Give large quantities of water.Inhalation : Remove to fresh air. Give artificial respiration and oxygen as required.

Fire Fighting: Water as extinguisher


Persona] Protective Equipment: Face shield, rubber gloves and apron.

Dilute with water. Neutralize with sodium meta bisulfite or sodium sulfite. Absorb on

spill pillows and place in a tightly sealed container.

Potassium Hydroxide: Highly corrosive.

First Aid:

Eyes and skin : Remove contaminated clothing and flush with water for 2Omins.

Ingestion : DO NOT induce vomiting. Give large quantities of water.Inhalation : Remove to fresh air. Give oxygen and artificial respiration as necessary. Do

not give mouth to mouth respiration.


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Personal Protective Equipment: Face shield, rubber gloves and apron.

Absorb on inert or alkali neutralizing spill pillows. Place in a container and neutralize

with base neutralizer.

Solvent and Inflammables

Acetone, Ethanol and Isopropanol : Extremely flammable,

First Aid:

Eyes and skin : Remove contaminated clothing and flush with lot of water. If blurring of

vision occurs consult a physician.

Ingestion : Induce vomiting by giving water or sticking two fingers down the throat. inconscious person only. Seek medical aid.

Inhalation : Remove to fresh air immediately. Give oxygen and artificial respiration as

necessary.

Fire Fighting: Water, alcohol resistant foam, CO2 or dry chemical extinguishers. Do not tip the

container over.


Personal Protective Equipment: Face shield, gloves and lab coat.

Use vapor suppressors if available. Absorb on inert material or spill pillows. Seal

container tightly.

Photo resist 1818: Flammable. Pregnant women and people trying to have children must keepaway.

First Aid:

Eyes and

skin

: Remove contaminated clothing and flush with water immediately.

Ingestion : Wash mouth with water and seek medical aid.

Inhalation : Remove to fresh air. Give oxygen or artificial respiration as necessary

Fire Fighting: Water, CO2 or dry chemical extinguishers.


Personal Protective Equipment: Goggles, gloves and lab coat. Change gloves if stained by

photoresist. Absorb on inert material and place in a tightly sealed container. Keep fire away.


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Hexamethyldisilazane (HMDS): Flammable and corrosive. Desiccant.

First Aid:

Eyes and skin : Remove contaminated clothing and rinse with water for 1 5mins.

Ingestion : Seek medical advice.

Inhalation : Remove to fresh air. Give artificial respiration if necessary. Keep patientwarm.

Fire Fighting: DO NOT use water. C02, sand or extinguishing powder.



Absorb on inert materials and place in tightly sealed containers. Keep fire away.

Methanol: Flammable and toxic.

First Aid:

Eyes : Extensive irrigation for 1 5mins is required. Pour water into eyes while rolling the

eye balls. Cover eyes with cloth if unable to tolerate light.

Skin : Remove contaminated clothing and flush with water for 1 5mins.

Ingestion :Call Poison Centre and follow their advice.Inhalation : Remove to fresh air. Protect self and victim with respirator. Give oxygen and

artificial respiration as necessary.

Fire Fighting: CO2 or alcohol foam extinguisher.


Personal Protective Equipment: Face shield, rubber gloves and lab coat.

Absorb on inert material and place in a tightly sealed container. Keep fire away.


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Exposure Limits to some Gases used at NCF

Gas Exposure Limit

Arsine,

AsH35Oppb

Chlorine,

Cl2 0.5 ppm

Tetrafluoromethane,

CF4None applicable

Hydrogen Chloride, HCl 5.0 ppm

Hydrogen Fluoride,

HF3.0 ppm

Ammonia, NH3 50 ppm

Phosphine, PH3 0.3 ppm

Silane, SiH4 5.0 ppm

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