Hygiene and Safety Standards in the Use of Ultraviolet Radiation Lamps
• Limit or minimize the time of exposure to UV radiation.
Comply with the recommendations provided by the manufacturer on
handling and care of equipment.
Know the wavelength with which you work, or the type of source of
radiation it uses. (This information is provided by the manufacturer)
Always keep and regularly read the technical documentation of the
equipment you have.
• Verify that the installation is adequate and carried out by a specialist
in these types of items.
Reduce and control the surface area affected by these
radiation, enclosing it or limiting it as much as possible
Inform all workers subjected to ultraviolet radiation of the
risks to which it is exposed and the appropriate means of protection.
UV-C sources should be located in compartments, or cabinets individuals or places that allow the source to be adequately isolated, through screens or special curtains, in order to avoid the scattering of ultraviolet radiation to other areas. The Compartments shall have interior walls, ceilings, and floors that are not
reflect radiation. A good renewal of the air in the work environment, since appreciable quantities of ozone, which is a gas obtained by ionization of the air,
among other methods, by exposing it to ultraviolet light. Ozone is a highly oxidizing compound that decomposes very quickly toxic even in low concentrations, for this reason it should be aerated properly an area that has had UV in operation for a long time.
Signaling and operation: When in use, it must be kept closed the access door to the UV light utilization area and should not be Valencia Prevention Service CSIC allow unauthorized personnel access to the area. It must be signaled ppropriately the area and implement visual signaling that allows inform about the operation of UV. symbol can be used general non-ionizing radiation adapted as follows: ULTRAVIOLET LIGHT IN USE. Any unnecessary exposure should be avoided even with the eyes. and the skin covered, for this it is essential to implement systems of turned on or off outside the zone or area of location of the UV source. The emission source should never be looked at directly.Sources of ultraviolet rays should not be discovered as these Rays can cause injury to the eyes or skin. Abstain from make repairs or adjustments to equipment, this must be done
by trained personnel who will be in charge of carrying out regularly scheduled corrective and preventive maintenance.
Use of germicidal lamps: Ultraviolet C light has the best action
germicidal. The optimal action is at 265 nm in length.
The ultraviolet light lamp used for disinfection only requires
be turned on once in the morning, at the beginning of the working day. Do not
it is necessary to turn it on every time a job is finished on it,
except in the cabin where mycobacteria are evaluated.
Maintenance of ultraviolet light lamps: It is very important
that the lamps be periodically cleaned with alcohol and
check its effectiveness with some frequency, at least annually.
Protection measures: To use ultraviolet light it is necessary to use
adequate personal protection, in particular that of the eyes, even when looking at gels with ultraviolet light. use screens face shields or safety glasses specifically designed to protect against these risks (European standard EN170). They exist in different colors (clear, yellow, gray) according to the protection offered by wavelength.
Health effects of ultraviolet light: Ultraviolet radiation, Because it penetrates poorly, it affects only the eye and skin. The lesions eyes are due to thermal action and skin damage is due to all to photochemical reactions. The effects of chronic exposure include accelerated skin aging.
UV-C radiation: These rays are the most dangerous and their effects biological range from germicidal action to protein alteration, nucleic acids and other complex biological materials. a minimum proportion of these rays on the surface of the Earth would suffice to Valencia Prevention Service CSIC cause a considerable increase in skin cancer, changes in the immune system, cataracts in the eyes, and serious damage to other areas such as agriculture. This radiation is not normally found on the surface of the earth, we only find it in sources artificial lamps such as germicidal ultraviolet lamps or in the arc of welding (electric arc welding.) The cornea absorbs almost 100% of UV-C, but transmission increases rapidly for radiation from longer wavelength for example: of the 320 nm rays only 40% is absorbed by the cornea, the rest is transmitted to the interior of the eye. For its part, the lens of an adult absorbs most of the UV, mainly those that are below 370 nm. Without However, people who do not have a lens are at greater risk. surgery (aphakia), since ultraviolet light, which is normally retained lens can pass to the retina and cause damage. In In general, in an adult person, less than 1% of the radiation between 320 and 340nm and only 2% of the 360nm radiation reaches the retina.
UVB radiation: UVB rays are the cause of skin burns.skin with painful redness (erythema) and blisters. If a person exposed to these rays for a long time, you will have greater chances of getting skin cancer. At eye level, UV-B rays favor the opacification of the lens giving rise to cataracts, after repeated exposures.
UV-VA radiation: They produce tanning of the skin and reactions of photosensitivity. This radiation is also emitted by so-called "black lights", used in tanning salons.
1. SUMMARY OF POSSIBLE RISKS
Ozone can affect you when you breathe it
It is possible that ozone causes mutations. Treat this substance with
Ozone can cause reproductive damage. treat this substance
Breathing ozone can irritate the nose and throat. the exhibits
Older adults can cause headaches, upset stomach, vomiting,
chest pain or tightness
Breathing ozone can irritate the lungs and cause coughing and/or shortness of breath. Higher exposures can cause a buildup of fluid in the lungs. (pulmonary edema), a medical emergency, with severe shortness of breath.
Contact of liquid ozone with skin or eyes can cause severe
Repeated exposure can cause lung damage.
Ozone is a colorless gas with a pungent odor. It is used to purify air and drinking water, in industrial waste treatment, oils, bleach and waxes, and to make other chemicals.
Ozone is on the List of Hazardous Substances.
Acute health effects
The following acute (short-term) health effects may occur occur immediately or shortly after exposure to ozone:
Breathing ozone can irritate the nose and throat. the exhibits older can cause headaches, upset stomach, vomiting, pain or chest tightness.
Breathing Ozone can irritate the lungs causing coughing and/or shortness of breath. air. Higher exposures can cause a buildup of fluid in the lungs pulmonary edema), a medical emergency, with shortness of breath severe.
Contact of liquid ozone with skin or eyes can cause severe burns.
Chronic health effects
The following chronic (long-term) health effects can occur in any time after exposure to ozone and can last months or years:
There is some evidence that ozone causes cancer in animals. It is
may cause lung cancer.
Ozone may cause mutations (genetic changes).
Ozone may harm the developing fetus.
Other long lasting effects
Repeated exposure can cause lung damage.
Security and health at work.