Basic Principles of Laboratory Safety and Waste · PDF fileBasic Principles of Laboratory...
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1
Basic Principles of Laboratory Safety and Waste management
Presenter : Sonam Bansal
Head - Nestlé Quality Assurance Centre Moga
Nestlé India Limited
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p. 2
Contents of Training Module
Chapter Chapter Title1 INTRODUCTION
2 ACCESS TO LABORATORY AND EMERGENCY EXITS
3 PERSONAL PROTECTIVE CLOTHING AND EQUIPMENT
4 GOOD WORKING PRACTICES
5 MAINTENANCE OF LABORATORY EQUIPMENT
6 WORKING WITH HAZARDOUS SUBSTANCES
7 STORAGE OF CHEMICALS
8 WORKING WITH FLAMMABLE SOLVENTS
9 GAS CYLINDERS
10 FIRE PRECAUTIONS
11 EMERGENCY PROCEDURES
12 FIRST AID
13 ACCIDENT FOLLOW-UP
14 SAFETY MANUAL
15 SAFETY TRAINING
16 MANAGEMENT OF LABORATORY SAFETY AND RESPONSIBILITIES
17 WASTE MANAGEMENT
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Why does laboratory safety matter ?
Safe working protects:
• You
• Other lab workers
• Cleaning staff
• Visitors
• Your work
p. 3
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2 - ACCESS TO LABORATORY AND EMERGENCY EXITS
p. 4
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Must be restricted to authorized persons
only.
A plan of the laboratory area must be available.
Each lab must have clearly designated emergency exits.
Access to Laboratory Areas
p. 5
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Emergency exits must:
p. 6
Be clearly marked &
well lit, even during
power failure.
Be kept clear at all
times
Never be locked
Open outwards, i.e. in the
direction of escape
Be designed to only
open from the inside.
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3 - PERSONAL PROTECTIVE CLOTHING AND EQUIPMENT
p. 7
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Must all wear adequate personal protective equipment (PPE) when:
- present in rooms where reagents, equipment & samples are stored
- working in rooms where analytical work is done.
Safe dress within the laboratory area (PPE)
p. 8
Laboratory staff
Cleaning staff
Visitors
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9
Closed shoes with good grip soles - no open shoes, high heels, flip flops, etc
Laboratory coat, clean and in good condition
Safety eye goggles
Suitable gloves appropriate for the task
Rubber or PVC aprons when handling hazardous chemicals
• Laboratory coats used in the laboratory areas must not be worn to the canteen.
Use appropriate eye, skin & hand protection
p. 9
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Tie back long hair & restrain loose clothing.
Jewelry must not be worn in the lab
•(unless for special cultural/religious reasons, with permission of laboratory manager/safety officer, and must not provide any potential safety hazards e.g. loose chains or necklaces, dangling ear rings).
Use appropriate eye, skin & hand protection -2
p. 10
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SCOPE
FOOD OK OK
BIOSAFETY OK OK (LABO P1, P2, P3)
RADIOACTIVITY OK
CHEMICALS OK OK
ACIDS OK OK
Material Thin nitrile (0.1 mm)
Thick nitrile (0.15 mm)
Neoprene (0.13 mm)
PE laminated film (0.06 mm)
Which Gloves to use for which task ?
p. 11
Rating Category
Best
Useable
Not useable
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Safety Showers
Eye-wash stations
Must be:
• Installed close to the laboratory area
• correctly maintained
• readily accessible for all staff
For an Emergency !
p. 12
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4 - GOOD WORKING PRACTICES
13p. 13
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Safe handling of chemicals & equipment.
Safe working practices in the Microbiology lab, especially if working with pathogens.
Information readily available about hazardous
chemicals – Material Safety Data Sheets (MSDA).
Introduction - BASICS
p. 14
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Good Housekeeping
p. 15
Keep your workplace tidy.
Clear up waste.
Make sure everything is safe before you leave your work area unattended.
A tidy laboratory avoids accidents for everyone.
Apply principles of 5S wherever possible.
The lab must be kept neat, clean & free of materials that are not pertinent to your work
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Rules about Smoking, Eating and Drinking.
p. 16
Smoking is not allowed anywhere in the laboratory building
Eating & drinking must be restricted to designated areas,
never on a workbench.
Food & drink for consumption must not be placed in refrigerators
intended for chemicals.
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Never suck pens or chew pencils
Always wash your hands before you leave and
especially before eating
17
Hygiene
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Mouth Pipetting – is forbidden in all laboratories, including microbiology labs
Mouth Pipetting
Use a pipettor or safety bulb
p. 18
X
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Chipped, cracked or broken
glassware may be dangerous.
It must not be used in the lab.
It must either be repaired or discarded.
Glassware
p. 19
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Use ear plugs if grinder / mill exceeds specified noise levels
Wear dust masks if grinding creates a lot of dust.
Sample Grinding
p. 20
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Use fume hoods correctly
•Set sash at correct working height
•Check that fume hood delivers correct air velocity (measured in m/s)
•Ensure fume hoods maintained correctly (service contract with supplier)
p. 21
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5 - MAINTENANCE OF LABORATORY EQUIPMENT
p. 22
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•Correctly installed according to manufacturers instructions
•Safe-to-operate
•Well maintained, according to a regular maintenance schedule
Equipment used within laboratories must be:
p. 23
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The electrical safety of all equipment, including fume
hoods, must be checked regularly according to a defined
schedule
All equipment working under pressure or vacuum must be
regularly checked for any defects (cracks in glass,
tubing,....) leaks etc.
Maintenance
Results of a fire in a fume hood, caused by
faulty electrical cables
p. 24
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For each piece of equipment written instructions for its
operation and maintenance must be readily available
A list of authorised and qualified users must be
available for each major item of equipment.
Documentation
p. 25
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6 - WORKING WITH HAZARDOUS SUBSTANCES
p. 26
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Handling Hazardous substances
Includes Carcinogens, Toxic, Corrosive Chemicals (as well as those may provoke fire or explosions) and microbial cultures.
p. 27
Disposal of hazardous
chemicals according to local regulations
Special precautions must be taken when handling solvents, acids, alkalis, toxic chemicals. Check
the warning symbols on the
label.
Minimize any chemical hazards by good ventilation & using fume-hoods
Minimize any microbiological hazards by good
working practices and use of laminar
flow /biosafetycabinets
Special precautions must be taken when handling cultures of bacterial pathogens
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7 – STORAGE OF CHEMICALS
28
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Correct Storage of Chemicals
Solvents must be stored in
well-ventilated cabinets or explosion
proof-cabinets.
Highly toxic & carcinogenic
chemicals (e.g. cyanide) must be kept under lock and key.
Flammable chemical
storage area should be kept
cool, away from sources
of ignition, and well-
ventilated.
Do not store incompatible
chemicals together.
Some examples are shown below:
Chemical Incompatible with
Acetic acid Nitric acid, perchloric acid, peroxides, permanganates
Ammonia Chlorine, iodine, bromine, hydrogen fluoride, calcium hypochlorite
Solvents Hydrogen peroxide, Nitric acid, Oxidizing materials
Sulfuric acid Nitric acid
p. 29
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Rules for Storage of Chemicals
Chemicals/solvents storage cupboards must be used with
suitable chemicals hazard warning labels on door.
• Only the smallest quantities
• Stored in their original containers
• Keep away from food & samples to be analysed
• Chemicals past their expiry date must be disposed of
• Maintain an up-to-date inventory of all purchased reagents and chemicals
p. 30
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8 – WORKING WITH FLAMMABLE SOLVENTS
p. 31
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Flammable solvents
Hazards
The vapours of some volatile
solvents, notably diethyl ether,
petroleum ether form explosive
mixtures with air
Any source of ignition may produce an explosion
A hot plate operating at > 130
°C is a source of ignition
p. 32
Precautions
Designated areas, with no
source of ignition.
Bunsen burners must not be used
when working with solvents
Good ventilation.
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9 - GAS CYLINDERS
p. 33
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Correct use of Gas Cylinders
Gas cylinders used in the lab are under high pressure
Examples: air, nitrogen, helium, hydrogen, argon.
p. 34
•Never use without formal training
•Minimise the number in a laboratory
•Store externally wherever possible
Cylinders should be stored, wherever
possible, outside the laboratory building under lock and key
•Ensure that they are chained when in use
•Move only with a cylinder trolley
•Wear appropriate boots.
Cylinders are heavy and can do serious damage to you if
they fall
Use regulators & control equipment suitable for the gas
concerned
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10 – FIRE PRECAUTIONS
p. 35
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Fire precautions
Fire alarms must be installed & tested regularly.
Fire (smoke) detectors must be installed & tested regularly.
The lab must be equipped with fire extinguishers which are checked regularly (annually).
Fire blankets must be visible & available in areas where inflammable solvents are handled.
Fire Drill – regular practice of fire drill.
p. 36
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11 – EMERGENCY PROCEDURES
p. 37
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Emergency Procedures must be set up for:
Various types of accidents
Spillage of hazardous substances
Fires
Emergency telephone numbers, in case of accidents or fire, must be clearly visible.
p. 38
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12 – FIRST AID
p. 39
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First aid
At least 2 of the laboratory staff must have received specific training in first
aid.
At least one trained first aider must always be available on site
A readily accessible, well maintained, first-aid cabinet must be available.
p. 40
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13 – ACCIDENT REPORTING AND FOLLOW-UP
p. 41
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Accident Reporting and follow-up
Follow-up:
Follow-up must include a root cause analysis of the accident, which will often allow weaknesses in training, procedure or
safety equipment to be recognized & corrected.
Even a small accident may point to the risk of a more serious accidents that may have been overlooked.
All accidents however minor or unimportant they may seem, must be reported & recorded.
It may also be useful to report near misses.
p. 42
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p. 43
14 - SAFETY MANUAL
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p. 44
All safety precautions and procedures must be collated in a Safety Manual.
Training and training records
Safety Equipment
Storage conditions for chemicals
Safe handling
Use and disposal of chemicals
Disposal of materials used in the microbiology laboratory
Emergency procedures
Documentation must include instructions on the following points:
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p. 45
15 - SAFETY TRAINING
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Health and safety
legislation and
respons-ibilities of employees
and company
Causes & Prevention
of fires,
Use of fire exting-uishers
Evacuation of building
and emergency
exits
First aid arrange-ments
Actions to take in the event of
spillages in the
laboratory.
Specific hazards &
risks associated with their
work activities.
Use of personal
protective equipment
(closed shoes, lab coats, eye goggles, aprons, masks,
gloves …)
Correct use of fume
hoods and weighing/ biosafety cabinets
Scope of training
All laboratory staff must receive adequate safety trainingwhich includes at least:
p. 46
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• Safety training must be repeated annually.
• Records of training must be kept for each member of staff
Training records
p. 47
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When in doubt – Ask !!
Do not carry out a new or unfamiliar procedure until you have been fully trained & understand the precautions necessary for safe working
p. 48
DO NOT GUESS OR ASSUME !
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p. 49
16 - MANAGEMENT OF LABORATORY SAFETY AND REPONSIBILITIES
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Responsibilities of Management
Laboratory head must ensure
that:
All personnel are familiar with the contents of the
laboratory safety manual
All personnel comply with all
specified precautions
p. 50
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Responsibilities of the employee.
p. 51
To cooperate with other employees to prevent accidents
To study the safety
manual and all safety practices governing their work
To apply the principles of
accident prevention
in their daily work and use proper safety devices
To apply all PPE rules
(wearing lab coats, safety
googles, closed
shoes, etc…)
To maintain their
workplace in safe
condition
To maintain equipment
in good condition
To attend safety
meeting and offer
constructive suggestions
To report any health
problems to their
laboratory manager.
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17 – Waste management
52p. 52
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Waste management : Microbiological
53
•Microbiological waste must be decontaminated before disposal, (≥121°C for ≥20 min and in accordance with the performance studies/cycle validation) and sent for incineration to local authorized body (external party)
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Disposal of Waste Materials
Part of your risk assessment will be to determine how to dispose of waste laboratory materials safely:
p. 54
•Solvents and oils must be segregated into the correct waste bottle or drum •Chlorinated solvents separated from non-chlorinated solvents
•Hazardous chemicals must not be disposed of by pouring them down the sink or by placing them in dust bins.•Local regulation must be followed for disposal of solvent / chemical waste e.g. sand pit or with authorized vendor
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Disposal of Waste Materials
Part of your risk assessment will be to determine how to dispose of waste laboratory materials safely:
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• Metal Sharp waste (needles, bottle caps etc.) is stored in a
resistant box and disposed off as per local regulation
• Broken Glass collected in the waste bag meant
for broken glass.
• Empty reagent bottles collected in trolley
• Metal waste (Instrument small parts, SCM cups
etc.) are collected separately and disposed off
as per local regulation
![Page 56: Basic Principles of Laboratory Safety and Waste · PDF fileBasic Principles of Laboratory Safety and Waste management Presenter : ... 1 INTRODUCTION ... all laboratories, including](https://reader030.fdocuments.us/reader030/viewer/2022021423/5ab53de17f8b9a1a048c9ca8/html5/thumbnails/56.jpg)
Examples of Bad Practices
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![Page 57: Basic Principles of Laboratory Safety and Waste · PDF fileBasic Principles of Laboratory Safety and Waste management Presenter : ... 1 INTRODUCTION ... all laboratories, including](https://reader030.fdocuments.us/reader030/viewer/2022021423/5ab53de17f8b9a1a048c9ca8/html5/thumbnails/57.jpg)
Did you identify the problems?
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Many types of chemicals, solvents, acids, bases, gas cylinders, sprays, toxic compounds all stored together
![Page 58: Basic Principles of Laboratory Safety and Waste · PDF fileBasic Principles of Laboratory Safety and Waste management Presenter : ... 1 INTRODUCTION ... all laboratories, including](https://reader030.fdocuments.us/reader030/viewer/2022021423/5ab53de17f8b9a1a048c9ca8/html5/thumbnails/58.jpg)
What’s wrong here?
Incompatible
chemicals
stored
together
![Page 59: Basic Principles of Laboratory Safety and Waste · PDF fileBasic Principles of Laboratory Safety and Waste management Presenter : ... 1 INTRODUCTION ... all laboratories, including](https://reader030.fdocuments.us/reader030/viewer/2022021423/5ab53de17f8b9a1a048c9ca8/html5/thumbnails/59.jpg)
Have you identified them all?
Fume hood
sash too
high
Glass
chemical
containers
stored on
floor
Material
stacked in
front of fire
extinguisher
![Page 60: Basic Principles of Laboratory Safety and Waste · PDF fileBasic Principles of Laboratory Safety and Waste management Presenter : ... 1 INTRODUCTION ... all laboratories, including](https://reader030.fdocuments.us/reader030/viewer/2022021423/5ab53de17f8b9a1a048c9ca8/html5/thumbnails/60.jpg)
What’s wrong here?
Fume hood sash
too high
Food not allowed
in the lab
No eyewear
No lab
coat
![Page 61: Basic Principles of Laboratory Safety and Waste · PDF fileBasic Principles of Laboratory Safety and Waste management Presenter : ... 1 INTRODUCTION ... all laboratories, including](https://reader030.fdocuments.us/reader030/viewer/2022021423/5ab53de17f8b9a1a048c9ca8/html5/thumbnails/61.jpg)
Have you identified them all?
No eyewear
Open-toed shoes
Possible cross contamination
of cell phone
![Page 62: Basic Principles of Laboratory Safety and Waste · PDF fileBasic Principles of Laboratory Safety and Waste management Presenter : ... 1 INTRODUCTION ... all laboratories, including](https://reader030.fdocuments.us/reader030/viewer/2022021423/5ab53de17f8b9a1a048c9ca8/html5/thumbnails/62.jpg)
Any Questions?
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