LESSON 2: LABORATORY SAFETY Flashcards

1
Q

For chemical safety, what is proper thing to do?

A

➢ All chemicals be identified
➢ Proper labeling is a must indicating
health risks(carcinogen, mutagen,
teratogen) and hazard class (corrosive,
poison, flammable, oxidizing)
➢ Hazardous chemicals must be
inventoried annually

All laboratories must have a file of
every chemical they use and with
corresponding MATERIAL
SAFETY DATA SHEET (MSDS)

 FUME HOODS are provided to
prevent inhalation of toxic fumes
✓ Protection against chemical odor by
exhausting air to the outside

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2
Q

MSDSs includes:

A

✓ Substance name
✓ Name, address and telephone number of
manufacturer
✓ Hazardous ingredient
✓ Physical and chemical properties
✓ Fire and explosion data
✓ Toxicity
✓ Health effects and first aid
✓ Stability and reactivity
✓ Shipping data
✓ Spill, leak and disposal procedures
✓ Personal protective equipment
✓ Handling and storage

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3
Q

What should we do for fire safety?

A

➢ Fire evacuation plan is required
➢ Fire drills be conducted
quarterly or annually depending
on local laws
➢ Exit paths must be clear of any
obstructions

➢ Combination Type ABC
extinguishers are found in
most laboratories
✓Need not worry what type of
extinguisher to grab during
fire

➢ Type C extinguisher containing
CO2 or another chemical
to smother flames are
also used
✓Does not damage equipment

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4
Q

What are the classes of fires?

A

Class A,B,C,D,E,F

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5
Q

For class A fire, what fires are involved?

A

solid or organic materials, such as wood, plastics, paper, textiles, or coal

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6
Q

For class B fire, what fires are involved?

A

flammable liquids, such as gasoline, petroleum oil, paint, or diesel.

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7
Q

For class C fire, what fires are involved?

A

flammable gases, such as propane, butane, or methane.

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8
Q

For class D fire, what fires are involved?

A

combustible metals, such as magnesium, lithium, sodium, potassium, titanium, or aluminium

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9
Q

For class E fire, what fires are involved?

A

electrically energized equipment

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10
Q

For class F fire, what fires are involved?

A

cooking oils and fats, such as vegetable oil, sunflower oil, olive oil, maize oil, lard, or butter (typically those used for deep fat fryers).

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11
Q

What are the types of fire extinguishers?

A

Water, Powder, Foam, CO2, Wet chemical

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12
Q

What are suitable and not suitable to WATER for fire extinguishers?

A

SUITABLE
for wood, cloth, coal, plastics, paper, textile, and other solid material fires

NOT SUITABLE
all other types of fires.

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13
Q

What are suitable and not suitable to POWDER for fire extinguishers?

A

SUITABLE
For solid material, liquid, gas, and electrical fires

NOT SUITABLE
chip or fat pan fires or metal fires (unless it M28 or K2)

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14
Q

What are suitable and not suitable to FOAM for fire extinguishers?

A

SUITABLE
solid material and liquid fires

NOT SUITABLE
gas, metal, electrical, or chip and fat pan fires.

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15
Q

What are suitable and not suitable to CARBON DIOXIDE for fire extinguishers?

A

SUITABLE
For liquid and electrical fires.

NOT SUITABLE
gas, metal, or chip and fat pan fires.

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16
Q

What are suitable and not suitable to WET CHEMICAL for fire extinguishers?

A

SUITABLE
For fires that involve cooking oils and fats.

NOT SUITABLE
other types of fires ( use a more appropriate extinguisher).

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17
Q

What are IMPORTANT ACTIONS DURING FIRE?

A

 Rescue any injured individual
 Activate the fire alarm
 Contain (smother) the fire, if feasible
(close fire doors)
 Extinguish the fire, if possible

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18
Q

How to use fire extinguisher?

A

P
* Pull the pin on the fire extinguisher in order to break the
tamper seal.
A
* Aim the fire extinguisher low, with the nozzle pointed at the
base of the fire.
S
* Squeeze the handle of the fire extinguisher to release the
extinguishing agent.
S
* Sweep the nozzle from side to side while pointed at the base of
the fire until it is extinguished.

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19
Q

What are the things you should do for electrical safety?

A

➢ All sockets should be checked for
electrical grounding and leakage at
least annually
➢ No extension cords should be used
in the laboratory

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20
Q

How to handle of compress gasses?

A

➢ Gas Cylinders (CO2, Anaerobic Gas
mixture) contain pressurized gases and
must be properly handled and secured
➢ Fallen leaking cylinders
✓ MISSILES
❖Loss of life and destruction to property

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21
Q

How to handle of compress gasses for gas tank?

A

➢ should be chained
➢ Stored in well-ventilated area
➢ Metal cap should always be in place
when tank is not in use
➢ Should be transported chained in special
dolly

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22
Q

What are the basic concept of biosafety and biosecurity?

A

According to World Health Organization
 Laboratory Biosafety Manual in 1983. (First
Edition)
 Encouraged countries to accept and
implement basic concepts in biological safety
 To develop national codes of practice for the
safe handling of pathogenic microorganisms
in laboratories within their geographical
borders.

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23
Q

History of biosafety and biosecurity

A

 Laboratory Biosafety Manual in 1993. (Second
Edition)
 many countries have used the expert
guidance provided in the manual to develop
such codes of practice
 Laboratory Biosafety Manual in 2004. (Third Edition)
 Addressing biological safety and security issues facing us in the
current millennium.
 Stresses the importance of personal responsibility.
 New chapters have been added on risk assessment, safe use of
recombinant DNA technology and transport of infectious
materials.
 Recent world events have revealed new threats to public health
through deliberate misuse and release of microbiological agents
and toxins.
 Introduces biosecurity concepts – the protection of
microbiological assets from theft, loss or diversion, which could
lead to the inappropriate use of these agents to cause public
 health harm.

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24
Q

Philippine biosecurity and biosafety

A

National Committee on Biosafety of
the Philippines (NCBP 1987)

Executive Order No. 514 -
Establishing the National Biosafety
Framework (NBF 2006) Institute

Institute of Health Policy and
Development Studies (UP NIH)

UP Manila Institutional
Biosafety Committee (IBC)
US Biosecurity Engagement
Program (BEP)

Philippine Advanced
Biosafety Officer
Training (PhABOT)

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25
Philippine Advanced Biosafety Officer Training (PhABOT)
Expand the pool of competent biorisk officers and trainers in the Philippines Strengthen the biorisk management system in the Philippines
26
What is biohazards?
❑ Organisms infectious to humans ❑ Biologically active agents, animals or plants causing disease in other living organisms leading to significant impact to the environment or community
27
Biohazards involve:
BACTERIA,VIRUSES,FUNGI,PARASITES,VENOM,TOXINS, ALLERGENS,RECOMBINANT DNA TECHNOLOGY,PRIONS
28
What are the biological agents?
BLOOD,STOOL,BODY FLUIDS,SPUTUM, EXUDATES, ISOLATES
29
What is laboratory biosafety?
Containment principles, technologies and practices implemented to prevent unintentional exposure to pathogens and toxins or their unintentional release
30
Laboratory biosafety achieved through?
❑ Various degrees of laboratory control and containment ❑ Laboratory design and access restrictions ❑ Personnel expertise and training ❑ Use of containment equipment ❑ Safe methods of managing infectious materials
31
What is biosecurity?
 Institutional and personal security measures designed to prevent the loss, theft, misuse, diversion, or intentional release of pathogens and toxins
32
Laboratory biosecurity achieved through?
❑ Facility security (limit access) ❑ Personnel reliability (background investigations) ❑ Information security (passwords) ❑ Transportation security (packaging) ❑ Material accountability (inventory
33
Local organizations on biosafety
 Biological Risk Association of the Philippines (BRAP), 2015  A non-government and non-profit association work to serve the emergent concerns of biological risk management in various professional medical, agricultural, technological, and biological sectors throughout the Philippines  Philippine Biosafety and Biosecurity Association, INC. (PhBBA)  Created by a multi-disciplinary team, including members from health care, academia, emergency response, pharmaceutical/biotech, as well as from the executive, legislative and judicial branches of the government.
34
Fundamental objective of biosafety and biosecurity
 Containment of potentially harmful biological agents. “Keeping the people from bad bugs”  Protection, control and accountability for valuable biological materials within laboratories, in order to prevent their unauthorized access, loss, theft, misuse, diversion or intentional release. “Keeping the bad bugs from bad people.”
35
CLASSIFICATION OF LABORATORY ACCORDING TO BIOSAFETY LEVELS  Appropriate for work with well-characterized, nonpathogenic organisms or agents (E. coli, B. subtilis)  work is conducted in an open bench and no containment equipment (undergraduate & teaching laboratories)  Use good laboratory practices, waste disposal, and aseptic techniques (clean work surfaces) & handwashing
 Biosafety Level 1
36
CLASSIFICATION OF LABORATORY ACCORDING TO BIOSAFETY LEVELS  Appropriate for work with agents of moderate hazard associated with human disease by ingestion, percutaneous or mucus membrane exposure (Salmonella, HIV, HBV)  Work has a restricted access & require a containment during certain processes (clinical diagnostic laboratories)  Recommended for laboratories handling human body fluids in which infectious agent maybe unknown  Biohazard warning sign posted in the lab.
 Biosafety Level 2
37
CLASSIFICATION OF LABORATORY ACCORDING TO BIOSAFETY LEVELS  Appropriate for work with exotic or indigenous agents with potential for aerosol transmission causing serious or lethal disease (Mtb, SARS)  Effective treatment & vaccination available  all work is contained, lab has engineering control to prevent release of the agent to the environment (eg. research & production facility laboratories)  workers may need to wear a respirator
 Biosafety Levels 3
38
CLASSIFICATION OF LABORATORY ACCORDING TO BIOSAFETY LEVELS  Is reserved for work with dangerous agents that pose a high risk for life-threatening disease by infectious aerosols & from which no treatment or vaccine is available. (deadly viruses only-Ebola, Marburg, Lassa)  Total containment, airtight labs, “submarine” doors, air pumps, water treatment, HEPA filtration & positive pressure “moonsuits
 Biosafety Level 4
39
Classification of infective microorganisms by risk group (no or low individual and community risk) A microorganism that is unlikely to cause human or animal disease.
Risk Group 1
40
Classification of infective microorganisms by risk group (moderate individual risk, low community risk) A pathogen that can cause human or animal disease but is unlikely to be a serious hazard to laboratory workers, the community, livestock or the environment. Laboratory exposures may cause serious infection, but effective treatment and preventive measures are available and the risk of spread of infection is limited.
Risk Group 2
41
Classification of infective microorganisms by risk group (high individual risk, low community risk) A pathogen that usually causes serious human or animal disease but does not ordinarily spread from one infected individual to another. Effective treatment and preventive measures are available.
Risk Group 3
42
Classification of infective microorganisms by risk group (high individual and community risk) A pathogen that usually causes serious human or animal disease and that can be readily transmitted from one individual to another, directly or indirectly. Effective treatment and preventive measures are not usually available.
Risk Group 4
43
What are the laboratory biorisk management?
ASSESSMENT, MITIGATION, PERFORMANCE
44
What is assessment?
a procedure that analyses and characterizes biological risks in a laboratory arising from a hazard or threat
45
What is Biosafety Risk?
 The risk of accidental exposure to or release of a biological hazard
46
What is Biosecurity Risk?
 The risk of intentional removal (theft) of a valuable biological material
47
What is risk?
is the potential that a chosen action will lead to an undesirable outcome
48
When is hazard/threat identification done?
When is hazard/threat identification done? Whenever you start a job/task Throughout the life cycle of the job/task Whenever there is significant change in the job/task Whenever there is new knowledge that affects the job/task If there has been an accident Periodically depending on the local legislation and/or institutional policy
49
Who does hazard/threat identification?
Personnel who are familiar in the task, procedure, or activity Lab worker, technician, etc. Personnel who are familiar with specific hazard Microbiologist, principal investigator, scientist, etc. Safety Team/Biosafety Team Identify hazard from overall perspective. Other experts as needed For complex activity, a multi disciplinary team may be necessary
50
Category of Hazards/Threats
Material-biological, chemical, radiological, liquid nitrogen, flammable material, etc. Equipment-centrifuge, autoclave, etc. People - pregnant staff, immunocompromised worker, non-competent staff, etc. Environment-congested laboratory, etc. Activity - procedures involving aerosol generation, culture, sharp use, etc.
51
Risk category
Laboratory Acquired Infection (LAI) Intentional/unintentional release of pathogens Needle pricks Failure of lab procedure Contamination Slips, trips, falls Physicalinjuries Unauthorized access Damage of property/equipment Loss/leakage/theft of materials/data/information
52
Hazard category
Pathogen Clinical/animal sample Inexperienced staff Irresponsible staff Untrained staff
53
Threat category
Terrorists Disgruntled staff Inexperienced staff Irresponsible staff Untrained staff
54
Hierarchy of controls
❑ Systematic approach to control, reduce, eliminate the risk of exposure from hazards. ❑ Steps in the hierarchy are in order of effectiveness ❑ Combination of 2 or more control measures to achieve an acceptable risk. ❑ Types of hazards, severity, exposure must be considered
55
MITIGATION HIERACHY
ELIMINATION OR SUBSTITUTION (Physically remove, modify or replace hazard, most protective) ENGINEERING CONTROLS (Isolate people from the hazard) ADMINISTRATIVE CONTROLS (Change the way people work) PRACTICES and PROCEDURES (Activities to reduce aerosolization ) PERSONAL PROTECTIVE EQUIPMENT (PPE, least protective)
56
Removing the hazard, not working with the agent or replacing the hazard with something less dangerous
Elimination or substitution
57
Physical changes to work stations, equipment, materials, production facilities, or any other relevant aspect of the work environment that reduce or prevent exposure to hazards
Engineering controls
58
Laboratory environment on engineering controls
✓ Air-handling system should move air from lower to higher risk areas, never the reverse ✓ Access should be limited to necessary personnel (biomedical engineers, janitors) ✓ Biohazard symbol must be prominently displayed on laboratory doors and any equipment (refrigerators, incubators, centrifuges) that contain infectious materials ✓ Visitors especially young children should be discouraged to enter ✓ Certain areas of high risk  (mycobacteriology and virology laboratories) should be closed to visitors
59
Engineering controls for biosafety cabinet
✓ A device that encloses a workplace to protect workers from aerosol exposure to infectious agents ✓ Air containing infectious material is sterilized either by heat, ultraviolet light, or most commonly by passage to a HEPA filter ➢ High Efficiency Particulate Air (HEPA) filter removes most particles larger than 0.3 um in diameter
60
✓ allow room air (unsterilized) to pass into the cabinet and around the material and area within, sterilizing only the air to be exhausted ✓ Have negative pressure ✓ Ventilated outside ✓ Operated with an open front ✓ 75 fpm
BIOLOGIC SAFETY CABINETS (BSC) CLASS I
61
✓ Sterilizes air that flows over the infectious material as well as air to be exhausted
BIOLOGIC SAFETY CABINETS (BSC) CLASS II
62
mostly utilized in hospital settings
BIOLOGIC SAFETY CABINETS (BSC) CLASS II TYPE A
63
70% recirculated to the cabinet work area through HEPA and 30% exhausted through HEPA back into the room or to outside through a canopy unit - 75 fpm
BIOLOGIC SAFETY CABINETS (BSC) CLASS II TYPE A1
64
similar to IIA1 but with 100 linear fpm uptake - under negative pressure to room - exhaust air can be ducted to outside through canopy unit
BIOLOGIC SAFETY CABINETS (BSC) CLASS II TYPE A2
65
30% recirculated to the cabinet work area through HEPA and 70% exhausted through a dedicated duct to the outside through HEPA filter - 100 fpm
BIOLOGIC SAFETY CABINETS (BSC) CLASS II TYPE B1
66
no recirculation, total exhaust to the outside through a HEPA filter -100 fpm
BIOLOGIC SAFETY CABINETS (BSC) CLASS II TYPE B2
67
The type C1 cabinet is basically a type B1 cabinet in terms of airflow pattern.  The cabinet exhausts approximately 60% of the work zone airflow through a dedicated portion of its centered depressed work tray/grill pattern and recirculates the remaining airflow, approximately 40% of work zone airflow through the nondedicated portion work tray grill area.  What makes type C1 cabinet different from a type B1 is that it has an internal exhaust motor/blower to push the airflow through the exhaust HEPA filter. Traditional type B1 cabinets require the facilities exhaust system to pull airflow through the exhaust HEPA filter and thus require to be direct connected. This new style cabinet is more like a type A2 with respect to exhaust in that it can be exhausted back into the room or through a canopy exhaust connection.  In terms of exhaust requirements, the type C1 will use a bit more exhaust volume than a type B1 and a type B1 requires a bit more negative pull or static than a type C1.
BIOLOGIC SAFETY CABINETS (BSC) Class ll Type C1
68
✓ Completely enclosed ✓ Negative pressure ✓ Air coming into and going out of the cabinet is sterilized through double HEPA filter system ✓ Cabinet is gas tight and sealed ✓ Operation performed through rubber gloves attached to the cabinet
BIOLOGIC SAFETY CABINETS (BSC) CLASS III
69
In the laboratory pathogens can become airborne by: ▪ Removing evacuated tube caps ▪ Manipulation of cultures ▪ Centrifuge, test tube cracks
Practices and procedures
70
Aerosol – Producing Devices
▪ Centrifuge ▪ Needle ▪ Syringes ▪ Pipettes ▪ Shakers ▪ Vacuum and Aspirating Equipments
71
What are the standard precautions for practices and procedures?
➢ In 1987 CDC published guidelines known as UNIVERSAL PRECAUTION to reduce the risk of HBV transmission in clinical laboratories and blood banks ➢ In 1996 the safety recommendation became known as the STANDARD PRECAUTIONS. ➢ ALWAYS CONSIDER ANY SAMPLE AS POTENTIALLY INFECTIOUS
72
Essentials of Standard Precautions and Safe Laboratory Work Practices:
✓ Extra belongings or bags must not be brought inside the microbiology laboratory ✓ Wear laboratory coats/gowns over street clothes ✓ Laboratory gowns should be removed before leaving the laboratory ✓ Do not eat, drink, smoke, or apply cosmetics (including lip balm) ✓ Do not insert or remove contact lenses ✓ Do not bite nails or chew on pens ✓ Do not mouth-pipette ✓ Limit access to the laboratory to trained personnel only ✓ Assume all patients are infectious for all blood-borne pathogens ✓ Take special care to prevent injuries with sharp objects such as needles and scalpel ❖ Never recap needles by hand ❖ Practice fishing out its cap and securing it by pressing on the work surface ❖ Discard sharps in an appropriate puncture resistant containers ✓ Report spills, breakage and injury ❖ Spills should be contained by covering it with absorbent material and saturate it with commercial germicide or 1:10 bleach solution, allow to stand for 15 minutes before finally cleaning the surface. ✓ Minimize aerosol production ✓ Wash hands before and after laboratory activity ✓ Disinfect laboratory benches/working surfaces before and after conduct of laboratory procedures ✓ Disinfectant (Household bleach – Sodium hypochlorite) must be diluted 1: 10 for porous or dirty surfaces and 1:100 for smooth surfaces and should not be more than 24 hours old. ✓ Identification and proper waste segregation ✓ Return all materials and reagents to proper storage area ✓ Handle equipments properly ✓ Keep the laboratory working surfaces free of clutter ✓ All materials contaminated with potentially infectious agents must be decontaminated before disposal(chemical treatment, moist heat treatment, boiling) ➢ Infectious wastes must be placed in two – leak proof plastic bags (double-bagging) ➢ Pipettes, swabs, and other glass objects should be placed into rigid cardboard containers ➢ Broken glass is placed in thick boxes, when full must be autoclaved ➢ Sharp objects including scalpels and needles are placed in sharps containers ✓ Avoid contaminating the benches, floors, walls and wastebaskets ✓ Always use PERSONAL PROTECTIVE EQUIPMENTS (PPE)
73
For personal protective equipment
serves as protective barriers of the skin and mucosal surfaces against cuts, accidental needle sticks, splashes and spills that might otherwise be detrimental to the microbiologist / medical technologist
74
For personal protective equipment safety Laboratory coats, gowns, aprons and coveralls
 Laboratory coats and gowns are used to protect from infectious fluids  Front button cotton laboratory coats may not be appropriate for working with large amount of infectious liquid  Rear fastening Gowns may be appropriate for working at higher containment  Don’t wear laboratory coats outside of the lab or take them home!  Cuffed sleeves can protect the wrists and lower arms  Gowns should not be laundered at home.
75
For Gloves safety
 Wear disposable vinyl, synthetic or N-DEX nitrile gloves when working with biohazardous materials  Avoid latex gloves (may cause allergies)  Replace torn, soiled or damaged gloves immediately  Do not reuse gloves  Do not wear gloves outside of the laboratory  Wash hands after removing gloves Unfortunately, gloves can be an effective way to contaminate everyday surfaces  Remove gloves prior to using “common” equipment or items that might be used by unprotected personnel  When in doubt, throw it out!
76
Proper Glove Removal
 Grasp outside edge near wrist. Careful not to touch wrist with gloved hand  Peel away from hand turning glove inside-out.  Hold in opposite gloved hand.  Slide ungloved finger under the wrist of the remaining glove, be careful not to touch the outside of the glove.  Peel off from inside, creating a bag for both gloves  Discard  Proper washing - Don’t be a dope, wash with soap
77
What are the types of gloves?
Nitrile,butyl,latex, neoprene
78
– most common type ✓ Made of natural rubber with outstanding tensile strength and temperature resistance ✓ Resistant to most acids and bases ✓ Available with or without powder
LATEX
79
– made of synthetic rubber ✓ With high resistance to abrasions and punctures ✓ Especially suited for handling harsh chemicals ✓ Substitute for latex type if allergic to latex
NITRILE
80
– made of synthetic rubber ✓ Resistant to most acids and bases, alcohols and solvents ✓ Remain flexible at low temperatures but are resistant to cuts, punctures and abrasions than are nitrile or rubber gloves
NEOPRENE
81
– made of synthetic rubber ✓ High permeation resistance to vapors ✓ Ideal to use with ketones and esters
BUTYL
82
Foot/Skin Protection
 Open toed shoes, sandals and other open footwear should be prohibited  Any closed footwear will do to avoid injury to the feet during glass breakages, liquid spills  Disposable scrub shoes can be used  Shorts and other garments that leave skin unprotected are not appropriate
83
Eye and Face Protection
 PPE can protect mucous membranes and prevent ingestion whenever there is potential for splash to eyes/face especially during the following:  Spill Clean up  Invasive procedures  Other high risk activities  Surgical masks with attached face shield protects mouth, nose and eyes from droplets but does not protect from aerosols: It is not respiratory protection!!!
84
Respiratory Protection
* Designed as last resort or temporary control measure * Respiratory protection program is necessary to ensure safe and proper use * Two types: air supplying and air purifying * Full face, half face, PAPR (Powered Air Purifying Respirator) * Special considerations: fit testing; facial hair; comfort; care and maintenance * Surgical masks are not respirators (look for the N95)
85
N95 effectivity
respirators remove at least 95% of airborne particles with a size of 300nm
86
N99 effectivity
respirators remove at least 99% of airborne particles
87
N100 effectivity
respirators remove at least 99.97% of airborne particles
88
HEAD CAPS
✓ Should hold hair securely especially for females with long hair ✓ Females should securely tie their hair at the back of their head and securely place the head cap
89
Elimination or Substitution what is disadvantage and advantage?
Advantages Immediate reduction of risk Disadvantages Not always available or possible
90
Engineering what is disadvantage and advantage?
Advantages Efficient, eliminates hazard Disadvantages Cost, complexity
91
Administrative what is disadvantage and advantage?
Advantages Authority approach Disadvantages Indirect approach, primarily addresses the human factor
92
Practices & Procedures what is disadvantage and advantage?
Advantages Indirect approach, primarily addresses the human factor Disadvantages Training and supervision requirements PPE
93
PPE what is disadvantage and advantage?
Advantages Ease of use, relative cost Disadvantages Does not eliminate hazard, PPE fails exposure happens, uncomfortable, limits ability, only protects the user
94
 The implementation of the entire biorisk management system, including evaluating and ensuring that the system is working the way it was designed.  Another aspect of performance is the process of continually improving the system
Performance
95
What are the mailing biohazardous materials?
1. Must meet the requirements of International Air Transport Association (IATA) and the International Civil Aviation Organization (ICAO) 2. Training in the proper packing and shipping is the key feature of the regulation 3. Shipper is ultimately responsible for safe and appropriate packing 4. Fines and penalties are responsibility of shipper 5. Infectious specimens or isolates should be wrapped with absorbent material and placed inside a plastic biohazard bag called PRIMARY RECEPTACLE 6. Primary receptacle is then inserted into a secondary container, most often a watertight , hard plastic mailer. 7. Secondary container is capped and placed inside an outer, tertiary container that protects it from physical and water damage 8. Coolant materials such as ice, dry ice, gel ice, liquid nitrogen or cold dogs must be provided by the shipper to ensure proper packaging 9. Forms necessary for the test is placed inside plastic wrapper and placed securely on top of the tertiary container 10. Shippers Declaration for Dangerous Goods Form must accompany Air Bill or Ground Form
95
What are risk management process?
Supervise and Evaluate Develop Controls Implement Controls Assess Hazard Identify Hazard
96
Spill management for clean up materials
Disinfectant solution (10% freshly prepared bleach is effective in most cases) ▪ Forceps, tongs, broom, dust pan ▪ Personal Protective Equipment (PPE): safety glasses, goggles, or face shield, utility gloves, wrap-around lab coat, shoe covers (optional) ▪ 'Biohazard' red bag, and sharps container if needed ▪ Paper towels, blue pads, or other absorbent
97
Spill management for Spill Involving Blood
1. Alert people in immediate area. 2. Don PPE. 3. Cover an area twice the size of the spill with paper towels. Pour disinfectant solution onto the spill, starting at the perimeter and working inward from the edges of the towels. Avoid splashing. 4. Allow 20 - minute contact period. 5. Wipe down any contaminated stationary equipment or furniture with disinfectant. 6. Use forceps, tongs, or broom to remove broken glass and other items; for glass, place in sharps container or red bag if soft material. 7. Remove towels and re-clean area with disinfectant solution. 8. Decontaminate (autoclave, chemical treatment) reusable clean-up items and other reusable equipment. 9. Inform personnel when the clean-up is complete. 10. Make a report of the incident
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What are the good work practices?
A Good Laboratory Work Practice is a practice, technique, or procedure that,when followed, has been demonstrated to protect lab workers and the environment and reduce the risk of exposure to hazardous agents. Perform procedures in a manner that will minimize splashing, spraying, spattering and generation of droplets. If a procedure may cause aerosols or droplets to form, use containment such as a biological safety cabinet. Avoiding touching your skin or environmental surfaces (e.g.; door knobs, phones, computer key pads) or equipment while wearing gloves Decontaminate all work surfaces with a tuberculocidal disinfectant or sodium hypochlorite solution (10% dilution of household bleach) following any spill and following completion of work Use mechanical pipetting devices -never pipette by mouth. Human blood, tissue and other potentially infectious materials should be transported in capped containers which are placed in a second leak proof container, appropriately labeled Never bend, break, recap, or otherwise manipulate needles. Don’t remove needles from syringe by hand. If removal is necessary, use a forceps, or sharps containers equipped with a needle removing device on its lid. Discard all sharps into approved sharps containers. Sharps containers must be located in the immediate vicinity of sharps use ▪ Dispose of sharps containers when they are ¾ full. ▪ Do not allow containers to overfill. ▪ Never reach inside or attempt to force items into a sharps container. Discard all non sharp material contaminated with blood, body fluids, or tissue into biohazard bags
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paper, boxes, cartons, bottles, plastics, tin cans, styropore, syringe wrapper
BLACK BAG (RECYCLABLE)
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leftover foods, fruit or vegetable peelings, cooking oil
GREEN BAG (BIODEGRADABLE)
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used gauze, gloves, cotton, catheter, plaster, diaper, tubings
YELLOW BAG (INFECTIOUS WASTE)
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(Chemical Pharmaceutical Wastes) empty bothers containers of Betadine lodine, Acetone Alcohol, Anesthetic, acids, disinfectants, laboratory agents, expired and adulterated drugs, vials, drugs for Chemotherapy, used batteries
YELLOW BAG with Black Band
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Radioactive waste
ORANGE BAG
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needles, lancets, blades, ampules, broken bottles
Collect all sharps and syringes
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For black bags
Paper * Carton * Styropore * Boxes * Bottles * Syringe wrapper * Plastics * Diaper * Tin cans
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Green bag waste
* Left over foods * Fruits & Vegetable Peelings * Used cooking oil
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For yellow bag (infectious waste)
* Used gauze * Catheter * Gloves * Plaster * Infectious diaper * Tubing's * Used cotton
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For yellow bag with black band (Chemical and pharmaceutical waste)
* Empty bottles/containers of Beta dine * Iodine * Acetone * Alcohol * Anaesthetic * Acids disinfectants * Laboratory Reagents * Expired and adulterated drugs * Vials * Drugs for Chemotherapy * Used batteries
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For orange bag (radioactive waste)
* Iridium 192 * Technetium 99 * Iodine 131 * Cobalt 90 * Gallium 67
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For sharp collector
* Needles * Syringes * Scalpels * Knives * Blades * Lancet * Any items that can cause a cut or puncture wounds
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What are good laboratory practices?
Disinfect waste before disposal  Chemical  Autoclave Keep an organized laboratory logbook and keep an inventory ▪ Lock laboratory doors ▪ Entry to the lab limited to authorized personnel only Wash hands after removing gloves, lab coats or other personal protective equipment and when leaving the work area for general access areas such as lunch rooms, libraries, administration offices Lab personnel having appropriate vaccinations prior to working with agent.
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Barriers to good practices
What barriers must be surmounted? –Convenience: *Practice: No food or drink allowed in the lab *Problem: No lunch room *Result: Food stored and consumed in the lab *Assumed Risk: Contamination, risk of infection, accidental exposure –Inventory: *Practice: Update the inventory at the end of the day *Problem: It’s the end of the day, people are tired *Result: Out of date or incorrect inventory that is retrospectively updated in the morning of several days backlog *Assumed Risk: Theft, misuse, diversion, loss, confusion