Safe Handling of Chemicals

Summary

This educational video script focuses on chemical safety and the proper use of personal protective equipment (PPE). It explains the importance of recognizing warning signs on chemical containers and the types of PPE available for protection. The script also covers chemical concentration, emphasizing the need to follow instructions and material safety data sheets for correct dilution. It introduces the concept of PPM and the use of test tape for measuring chemical concentration. Additionally, the script discusses chemical dispensing, highlighting the use of automatic dispensers and the correct procedure for filling spray bottles. Lastly, it stresses the importance of maintaining chemical concentration and hygiene standards in cleaning practices.

Takeaways

• 🚨 Recognize chemical warning signs to protect yourself, such as corrosive, toxic, highly flammable, irritant, harmful, and oxidizing signs.
• 🛡 Use personal protective equipment (PPE) like goggles, masks, respirators, gloves, and aprons to shield from chemical hazards.
• ❗ Always follow PPE procedures, and consult your supervisor if unsure about the required PPE.
• 🧪 Understand chemical concentration by reading instructions or material safety data sheets (MSDS) to avoid over or under dilution.
• 📏 Chemical concentration is measured in PPM (parts per million), and test tapes can be used to ensure the correct concentration.
• 💧 When diluting chemicals, always add the chemical to water, not water to the chemical, to prevent accidental contact or inhalation.
• 🔄 Use automatic dispensers for chemical concentrates to ensure accurate and safe dispensing.
• 🚫 If a dispenser is leaking or malfunctioning, contact your chemical provider for repair instead of attempting a fix yourself.
• 📝 Follow the correct steps for filling a spray bottle with chemical solution, ensuring even distribution without shaking.
• 🔍 Regularly test chemical solutions to maintain high standards of hygiene and cleanliness, especially when using them in buckets or basins.

Q & A

What are the common warning signs found on chemicals?

Common warning signs include corrosive, toxic, highly flammable, irritant, harmful, and oxidizing signs, each indicating different levels of hazard such as tissue damage, potential for death, fire risk, skin irritation, non-toxic but dangerous substances, and substances that can enhance burning.

Why is it important to wear personal protective equipment (PPE) when handling chemicals?

PPE is crucial for shielding oneself from the harmful effects of chemicals. It includes items like goggles, masks, respirators, gloves, aprons, and safety shoes, ensuring protection against chemical exposure regardless of the task's duration or scale.

What should one do if unsure about the necessary PPE for a task?

If uncertain about the required PPE, one should consult with a supervisor to understand the available PPE and ensure proper protection.

How are chemicals typically delivered and what is the process for their use?

Chemicals are usually delivered in a concentrated form and need to be diluted by mixing with water. The correct amount to be added is specified in instructions or material safety data sheets (MSDS).

What does PPM stand for in the context of chemical concentration?

PPM stands for 'parts per million,' a measure used to define the concentration of a chemical in a solution.

How can one determine the correct concentration of a chemical solution?

The correct concentration can be determined using test tapes that change color when submerged in the solution, which can then be compared to a color chart on the test tape container.

What is the golden rule of chemical dispensing?

The golden rule is to always add the chemical to water, not water to the chemical, to prevent the chemical from forming a firm mass that could cause harm if it comes into contact with skin or eyes or is inhaled.

How should one correctly fill a spray bottle with a chemical solution?

The correct steps include filling the bottle with water to the indicated level, fitting it into the dispenser without the lid, dispensing the chemical by pushing the button until the light turns green, and then adding the lid and turning the bottle upside down to distribute the chemical evenly.

What is the significance of the hair net in PPE, and what should be done if it's not worn properly?

The hair net is part of PPE to maintain hygiene by covering the hair and ears. If it's not worn properly, such as with ears sticking out, it's unhygienic and should be adjusted to ensure full coverage.

How often should chemical solutions in buckets or basins be changed to maintain cleanliness standards?

Chemical solutions in buckets or basins should be changed regularly throughout the day to avoid using overly diluted chemicals, which would be ineffective and waste time and energy.

Outlines

00:00

🧪 Chemical Safety and Personal Protective Equipment (PPE)

This paragraph emphasizes the importance of chemical safety and the use of personal protective equipment (PPE). It introduces various warning signs found on chemicals, such as corrosive, toxic, highly flammable, irritant, harmful, and oxidizing. The paragraph explains the significance of each sign and how they indicate the potential hazards of chemicals. It then transitions into discussing the types of PPE available, including goggles, masks, respirators, gloves, aprons, hair nets, and safety shoes, and stresses the necessity of wearing appropriate PPE to protect oneself from chemical exposure. The importance of consulting supervisors for PPE procedures is also highlighted.

05:01

🔬 Understanding Chemical Concentration and Dispensing

The second paragraph delves into the concept of chemical concentration and the correct method of diluting chemicals. It explains that chemicals are often delivered in concentrated forms and need to be mixed with water, with the exact amount depending on the chemical and its intended use. The paragraph introduces the measurement unit PPM (parts per million) and suggests using test tapes for determining the correct concentration. It also touches on the use of automatic dispensers with sachets for common chemical concentrates, ensuring safe and accurate dispensing. The paragraph concludes with a golden rule of chemical dispensing: always add the chemical to water, not the other way around, to prevent the chemical from becoming too concentrated and posing a risk to health.

Keywords

💡Chemical Safety

Chemical safety refers to the measures and practices undertaken to prevent harm from the use, storage, and handling of chemicals. In the video, it is emphasized as a crucial aspect of working with chemicals, highlighting the importance of understanding warning signs on chemical containers and the necessity of personal protective equipment (PPE) to shield oneself from potential harm. The video underscores the need for chemical safety by discussing the various warning signs such as corrosive, toxic, and flammable, which are critical for anyone handling chemicals to recognize.

💡Personal Protective Equipment (PPE)

PPE encompasses a variety of protective clothing and gear designed to protect workers from injury and health hazards. The video provides a comprehensive list of PPE, including goggles, masks, respirators, gloves, and aprons, which are essential for safeguarding against chemical exposure. It stresses the importance of wearing the appropriate PPE, regardless of the task's duration, to ensure safety in chemical handling and usage scenarios.

💡Chemical Concentration

Chemical concentration pertains to the strength or amount of a chemical present in a solution, which is typically measured in parts per million (PPM). The video explains that understanding and controlling chemical concentration is vital for ensuring that cleaning solutions are neither too weak nor too strong. It mentions the use of test tapes to determine the correct PPM, which is a practical method for ensuring that chemicals are mixed and diluted correctly.

💡Material Safety Data Sheets (MSDS)

MSDS are documents that contain information on the properties of a chemical substance, including potential hazards, appropriate handling, and safety precautions. The video advises reading MSDS to determine the correct amount of chemical to add to water for proper dilution, emphasizing the role of these documents in ensuring chemical safety and the correct use of chemicals.

💡Corrosive

Corrosive is a term used to describe a chemical that can cause severe damage to living tissue, such as skin and eyes. The video uses the corrosive sign as an example of a warning sign that indicates the need for extra caution and appropriate PPE to prevent contact with such harmful substances.

💡Toxic

Toxic chemicals are substances that can cause harm or death if ingested, inhaled, or absorbed through the skin. The video highlights the toxic warning sign as a critical indicator for workers to be aware of, necessitating the use of PPE and careful handling to avoid exposure.

💡Flammable

Flammable chemicals are those that can easily catch fire. The video mentions the flammable sign as a warning to indicate that special care must be taken when handling such chemicals, including proper storage and avoidance of open flames.

💡Irritant

An irritant is a substance that is not corrosive but can cause skin irritation, such as blisters or redness. The video distinguishes between irritant and corrosive signs, highlighting the importance of recognizing these differences to select the right PPE and handling procedures.

💡Harmful

Harmful is a term used to describe chemicals that are not necessarily toxic but can still pose a health risk. The video explains that the harmful sign, similar to the irritant sign, warns of potential danger, requiring caution and proper protective measures.

💡Oxidizing

Oxidizing chemicals are substances that can increase the rate of combustion of other materials by releasing oxygen. The video describes the oxidizing sign as a warning to indicate that these chemicals can enhance the burning of other substances, thus requiring careful handling to prevent fires.

💡Dispensing

Dispensing in the context of the video refers to the controlled distribution of chemical concentrates into water or other solutions. It discusses the use of automatic dispensers with sachets to ensure the correct amount of chemical is added, reducing the risk of human error and contact with chemicals. The video also emphasizes the golden rule of adding chemical to water, not the other way around, to prevent the chemical from forming a dangerous concentration.

Highlights

Chemical safety and personal protective equipment (PPE) are crucial for protection against harmful substances.

Understanding warning signs on chemicals is essential for safety.

Corrosive chemicals can attack and destroy living tissue like skin and eyes.

Toxic chemicals pose a risk of death if ingested, inhaled, or absorbed through the skin.

Highly flammable chemicals can easily catch fire.

Irritant chemicals can cause blisters or skin redness but are not corrosive.

Harmful chemicals are dangerous but not necessarily toxic.

Oxidizing chemicals can make other substances burn more fiercely by adding oxygen.

Personal protective equipment (PPE) includes goggles, masks, gloves, and aprons to shield from chemical harm.

PPE must be worn regardless of the job's size or duration.

Chemical concentration is vital and should be checked using instructions or material safety data sheets (MSDS).

Chemicals are measured in PPM (parts per million) for correct dilution.

Test tape is a simple method to check chemical concentration by color comparison.

Automatic dispensers with sachets ensure correct chemical dilution and minimize contact risk.

If a dispenser is leaking or malfunctioning, contact the chemical provider for repair.

The golden rule of chemical dispensing is to always add chemical to water, not water to chemical.

Follow a five-step process for safely filling a spray bottle with chemical solution.

For bucket solutions, measure water capacity and add chemicals accordingly, then test for correct PPM.

Regularly change chemical solutions in buckets or basins to maintain effectiveness.

Test solutions hourly to uphold hygiene and cleanliness standards.

Prepare a cleaning caddy with frequently used chemicals, sponges, and scrubbers for any cleaning emergency.

Always ensure that hair is fully covered by hair nets for hygiene purposes.

Transcripts

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[Music]

safety

chemicals are harsh and harmful

substances

preventative measures need to be taken

to protect you

in this lesson we will be focusing on

chemical safety and personal protective

equipment

chemical concentration and chemical

dispensing

let's get started with chemical safety

and PPE

the first thing to be able to identify

in terms of chemical safety are warning

signs

even if you are unsure of the chemical

you will be able to protect yourself if

you can read the warning signs

here are some common warning signs found

on chemicals

the first one we have here is the

corrosive sign

this indicates that this chemical will

attack and Destroy living tissue such as

Skin and eyes

then we have the toxic sign

this means that this chemical can cause

death if swallowed breathed in or

absorbed by the skin

this is a sign that means highly

flammable

saying that a specific chemical can

catch on fire easily

then we have the irritant and harmful

signs

the irritant is not corrosive but will

make a blister or turn the skin red

the harmful sign looks similar to the

irritant sign but means that it is not

toxic but still dangerous

and lastly is the oxidizing sign

this sign means that this chemical adds

oxygen to other substances that will

make it burn more fiercely

these all sound rather terrifying

luckily we have PPE or personal

protective equipment that is easily

available and designed to Shield you

from harm

PPE comes in many forms such as goggles

disposable surgical masks

respirators

disposable gloves heat resistant gloves

disposable aprons

heat resistant aprons

hair nets

and steel-capped non-slip shoes

if any PPE is necessary it must be worn

no matter how small or quick the job

if you are unsure of PPE procedure speak

to your supervisor about the PPE

available to you and ensure that you are

always protected

now that we have chemical safety and PPE

covered let's discuss chemical

concentration

[Music]

most chemicals are delivered in a

concentrated form and need to be diluted

meaning that they need to be mixed with

water

the amount of chemical added will vary

so always read the instructions or

material safety data sheets MSDS

to make sure you are adding the right

amount of chemical to water and not over

or under diluting it

chemicals are measured in PPM or parts

per million and depending on the

chemical should be at the concentration

of 200 PPM

this is very technical and the easiest

way to understand chemical concentration

is by using test tape

depending on the chemical there are

different test types that when submerged

in the water and chemical solution will

change color

the color can then be compared to colors

on the test tape container showing the

correct PPM

it is important to check the

concentration so that you are sure that

the chemicals are doing their jobs

properly and the solution is not

dangerously strong or overly weak

there are clever methods that altogether

remove the worry of incorrect dilution

this brings us to our next Point

chemical dispensing

in your work area you will find

automatic dispensers fitted with sachets

of common chemical concentrates such as

all-purpose cleaner all-purpose

sanitizer and heavy duty degreaser

depending on the chemical there are

different amounts that must be added but

they will be added by pumps measured by

the dispenser so that you are safe from

any chemical contact

if the dispenser is leaking or

malfunctioning don't try to fix it

yourself

contact diversity your chemical provider

to repair the dispenser immediately

there is one Golden Rule of chemical

dispensing

always add the chemical to water not

water to chemical

this is because the chemical will firm

too much if it is added first and could

come into contact with your skin or eyes

or it could be inhaled

follow these steps to safely and

correctly fill a spray bottle with

chemical solution

Step 1 fill the bottle with clean cold

water to the indicated level

step 2.

fits the bottle without the lid into the

dispenser

step 3 using both hands slowly and

evenly push the button to dispense the

chemical

once the light turns green push the

button again

check the instructions for the specific

chemical to determine how many pumps of

chemical the bottle needs

step four

once all the chemical has poured into

the bottle remove the bottle and screw

the lid back on

holding the neck gently turn the bottle

upside down so that the chemical is

evenly distributed without being shaken

step 5 the chemical is ready to be

stored in the caddy and used straight

away

because of the automated dispensing it

doesn't need to be tested for PPM

we have just learned how to mix

chemicals in a spray bottle

did you notice anything wrong with these

steps

take a moment to think about it

if you said that the steward's ears were

sticking out of the hair net well done

you are spot on

this is unhygienic and ears must always

be kept covered by your hair net

what do you do if you need a bucket of

solution

well it all depends on the capacity or

amount of water that the bucket can hold

buckets should have a level indicating a

measured cut off point for water

then chemicals can be added by the

dispenser in a larger scoop

mixed together and then sample with the

test paper to ensure you have the

correct PPM

because you are mixing these by hand

make sure your PPE is just right

when using the chemicals in a bucket or

Basin throughout the day change them

regularly to avoid using over diluted

chemicals

this is because you will just be

cleaning with dirty watered-down muck

and wasting all your time and energy

test the solutions every hour to

maintain high standards of hygiene and

cleanliness

for everyday cleaning pack your caddy

with spray bottles of the chemicals you

use most frequently as well as clean

sponges and scrubbers

the caddy should be kept on a trolley

with clean water and paper towel so that

you are prepared for any cleaning

emergency

well done on learning all about the

chemicals found in your department and

how to use them safely

[Music]

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