Flashcards
Legionella Control International Legionella Awareness Flash Cards
Flashcards do conjunto (30)
- 1Legionella Like ?Temperature 20C - 45C
Stagnant Water
Biofilm
Amoeba
Iron
L-Cysteine
Oxygen - 2—Chlorine Dioxide
An Oxidising Biocide
Does not react with water
Almost 100% Biocidal Activity at pH 10
- 3—Written Scheme of Precautions
Who does what Legionella related Tasks, when and at what frequency.
- 4—Aerosol
created by water impacting on any surface
infected droplets < 5 microns can reach deep into the lung.
- 5—Assets that generate a risk are
Dead Legs
Dead Ends
Taps
Showers
Long Pipe Runs
Expansion Vessels
- 6—Guidance on Managing
Cooling Towers to mitigate the risk of Legionnaires disease
- 7—Guidance document released 2016
Spa Pools
- 8—Written Scheme of Precautions
Describes
Who does what Legionnaires related tasks and at what frequency.
- 9—How oxidising biocides kill a bacteria like legionella by denaturing proteins in the cell wall.
- 10—Amoeba
Protozoa
Plays an important part in the life cycle of the Legionella Bacterium
- 11—Graph demonstrates that HOCL and HOBR become less effective as the pH of the water increases.
Chlorine Dioxide remains effective even at pH 10
- 12—Hydrogen Peroxide
an oxidising biocide that produces Oxygen and water when it reacts with bacteria.
- 13—A petri dish for developing Legionella
Black because of the ingredients in the culture media.
- 14System SchematicRequired to enable a suitable and sufficient Risk Assessment,
Can be hand drawn or computer generated
- 15Legionella TrainingTraining is required for all those involved in the control of the Legionella risk in the premises water systems.
- 16Risk Assessment Rating SystemCan be colour coded or numerical but must be clearly understood and unambiguous.
- 17—Chlorine an oxidising biocide has universal use in potable water disinfection.
Residual range typically 0.1 ppm - 0.5 ppm
- 18Rust or CorrosionLeads to reduced water flow, stagnation of water and provides Iron to the Legionella bacterium, one of its required nutrients.
- 19—Design Features of a Cold Water Tank
Insulated
Screened from vermin and insects
Well fitting lid
Expansion return routed to a tundish
Inlet and outlet diametrically apposed
- 20—Those at risk
middle aged men
Immune compromised
Alcoholics
Diabetics
Those with Heart Lung Kidney Disease
Smokers
- 21—Found in soils and waters even in potting compost
- 22—Legionella is not contagious person to person.
A person gets infected by breathing in an aerosol from a contaminated water source.
- 23—Planktonic Free Floating Bacteria
Sessile Adhered to surface
- 24—Sequence of events and conditions that creates an increased risk in water systems from the Legionella bacterium.
- 25—Desired Features of a Calorifier
Insulated
Temperature Guages
Inspection Hatch
Drain
Shunt Pump
Easy Access
- 26—Copper & Silver
Creates Copper & Silver Ions
These disrupt the metabolism of bacteria
- 27—Ultra Violet Light
Kills Bacteria by damaging DNA
Not very effective against estblished biofilms
Better in new or virgin water systems
- 28BiofilmA home and nutrient source for Amoeba and water borne pathogens including Legionella.
Very difficult to kill biofilms either with high water temperature or oxidising biocides.
- 29—Flexible Hoses
If they contain EPDM will present a risk due to internal cavities.
These present areas for bacteria to proliferate
- 30—SPA POOLS
If poorly maintained can present an infection risk from a number of water borne pathogens.
Informações
- Descrição
- First day training Flash cards suitable for LCA 9000, LCA 9010, LCA 9011
- Criado por
- Paul Jeffreys
- Visualizações
- 119
- Avaliação