Health and Safety Flashcards
(41 cards)
What is a RIDDOR report?
A RIDDOR report is required only when the accident is work-related and it results in an injury of a type which is reportable.
The death of any person must be reported if it arises from a work-related accident. To whom does this apply?
Workers and non-workers
A femoral fracture is an example of what type of injury under RIDDOR?
Specified injury
If an accident leads to a worker being incapacitated so they cannot perform their normal duties and/or are away from work or cannot perform their normal duties, when/how does this fall under RIDDOR?
Record if over 3 day incapacitation, report if over 7 day incapacitation.
When do non-fatal accidents to non-workers (clients) have to be reported by an employer?
When the accident results in an injury and the person is taken directly from the scene of the accident to hospital for treatment of that injury.
What are some examples of COSHH substances in vet practices and animal establishments?
- Dust from animal bedding
- Cleaners, including detergents and biocides
- Medicines
- Ionising radiation sources
- Microorganisms from animals
- Animal allergies/sensitivities
- Other allergies/sensitivities
What are the hazards from electrical items to humans and animals?
Electrical burns
Thermal burns
Loss of muscle control
Electrocution/electric shock
When can a voltage block electrical signals between the brain and muscles?
Even a low voltage like 50V applied between 2 parts of the body for long enough can block the electrical signals between the brain and muscles. Long enough in this case might be 2-10 seconds.
What affects the electrical current pathway?
Physical size/the distance current travels affects the electrical current pathway. The longer the distance, the more sensitivity.
What happens to the resistivity of the skin when it is wet?
The resistivity of the skin is lower when it is wet, estimated as 1000 ohms when wet and more than 500,000 ohms when dry.
What affects the resistivity within the body?
Resistivity within the body depends on the organs, such as the internal resistance between the ears is only 100 ohms whereas it is 500 ohms when measured from finger to toe.
What is the effect of 1mA of current on the body?
Faint tingle
What is the effect of 5mA of current on the body?
Slight shock felt, disturbing but not painful, most people can let go. However strong, involuntary movements can cause injuries.
What is the effect of 6-30mA on the body?
Painful shock. Muscular control lost. This is where freezing current starts, may not be possible to let go.
What is the effect of 50-150mA on the body?
Extreme pain, respiratory arrest, severe muscular contractions. Individual cannot let go, death is possible.
What is the effect of 1000-43000mA on the body?
Ventricular fibrillation/uneven uncoordinated pumping of the heart. Muscular contraction and nerve damage begins to occur death is likely.
What is the effect of 10,000mA on the body?
Cardiac arrest and severe burns occur. Death is probable
If your skin is dry, it could be as high as 100,00 ohms which would give 2.4mA of current – how dangerous do you think this current might be?
2.4 mA will give you a bit of a jolt (see the table; 1 mA = tingling sensation felt)
If your skin is dry, it could be as high as 100,00 ohms which would give 24mA of current – how dangerous do you think this current might be?
6-30 mA is when the ‘let go’ threshold is reached: unable to let go, tonic contractions of muscles, tissue damage, contraction of respiratory muscles, asphyxia and hypoxaemia. So, serious shock and effect on the heart.
What can currents above 75-100mA delivered for less than 1 second lead to?
Ventricular tachycardia
Ventricular fibrillation (VF)
During electrocution, what is the risk of ventricular fibrillation determined by?
- Current density (as the electricity travels across the chest)
- Proximity to myocardium
How do defibrillators work?
Work by giving a high current shock across the heart when the heart still has electrical activity, mostly by fibrillation. Can’t restart an electrically inactive heart.
What is the result of deep electrical burns?
Deep burns that require major surgery and are permanently disabling
What are the main hazards associated with diathermy?
- Accidental burns
- Accidental electrocution
- Surgical plume
- Ignition of volatile agents
- Electrical inference with other medical devices like ECG machines, pacemakers and video equipment