Asked in Workplace Health and SafetyRadiation
Workplace Health and Safety
Do dosimeter badges detect any exposure to alpha particles when worn by radiation workers?
Asked in Physics
What are the reasons why radiation workers are given higher dose exposure limit is it good or bad?
Asked in Health
What is the average annual dose of radiation exposure to radiation workers?
There is no average dose as exposure varies from place to place, but anyone working with radiation should consult their Local Rules for guidance, and wear a dosimeter. The IAEA recommended that the annual dose for workers be under 20mSv. (20 milli-sieverts, where 1 sievert (J/kg) is the radiation required to impart 1 joule of energy in 1 kg of matter.) The UK and the EU have very strict guidelines for staff that work with ionising radiation. These are the dose limits that have been set up to help protect staff from unheathy amounts of radiation. Whole Body Dose Limits Per Year: Radiation Workers ages 18 yrs and older = 50 mSv. Trainees aged 18 yrs and older = 1 mSv General public (frequent exposure) = 1 mSv General public (infrequent exposure) = 5 mSv == == == == == ==
Why radiation workers are higher dose exposure limitsis this good or bad?
Asked in Nuclear Energy
What is going to happen to the Japanese workers in the nuclear power plant?
Asked in Physics
How does a Dosimeter work?
Every dosimeter has a serial number. An organization's Radiation Safety Officer (RSO) or similar person assigns dosimeters to staff members who come in contact with radiation. The workers wear the dosimeters during the course of their workday. They turn them in at the end of a scheduled period, such as at the end of the month, and receive new badges to use. The RSO sends the badges to a lab for processing and receives a report listing radiation exposure amounts and badge numbers. If a person has received an excessive amount of radiation during a work period, he may be assigned temporarily to nonhazardous duties and given a medical checkup.
Asked in Nuclear Energy, Nuclear Weapons
What precautions do workers in a nuclear power plant have to take?
Radiation suits are completely fake. Radioactive materials need to be encased in shielding to make sure people are protected from them while being handled. There are often Graded-Z barriers, which are made up of several different compounds that block different radioactive particles generated by a reactor. In addition, workers wear radiation/particle detectors that monitor their radiation exposure.
Asked in Nuclear Energy, Nuclear Fission
What risk is associated with using nuclear fission to produce energy in a power plant?
Asked in Waste and Recycling, Radioactive Waste
Why is it important to store nuclear waste safely?
Asked in Japan in WW2
How many people are dying of radiation today?
Approximately none. It takes a massive dose of radiation to kill; the last people to die of radiation poisoning were cleanup workers right after the Chernobyl reactor accident. Long-term mid-level exposure to radiation can increase your risk of certain forms of cancer, but you die of the cancer, not the radiation. The effects of long term low-levels of radiation are still poorly understood.
Asked in Physics
Why do workers work far from the source of radiation?
Asked in Physics
One example of of the kind of person who might need a dosimeter?
Chemical Dosimeters are frequently used in the petroleum and chemical sectors to detect harmful and toxic chemicals and monitor the exposure of workers to those chemicals during their shift. They are worn by the worker and will be analyzed for colour change indicating the presence of the toxin and the concentration the worker was exposed to over a set time.
Asked in Health
Why is it that a person expose to radiation is no chance for survival?
A person's chances of dying of exposure to radiation depends on how much radiation they are exposed to. Radiation is a naturally occurring phenomenon. We are exposed to radiation through the sun, for example. Radiation is also found in man-made sources (ex. appliances, medical equipment). The human body, however, can only tolerate but so much exposure to radiation at any given time without damage. Radiation is often measured in REMS. Exposure to the sun will yield approximately 5-20 REMS. If exposed to 50-100 REMS of radiation, a person would experience mild radiation poisoning, with symptoms like headache, a temporary lowering of red blood cell count and even temporary male sterility. Between 100-200 REMS, humans experience light radiation poisoning. Symptoms include mild to moderate nausea and vomiting, fatigue, immune system suppression, miscarriage and even death in 10% of cases. Between 200-300 REMS, fatality occurs in 35% of cases. Between 600-1,000 REMS, fatality is almost 100% within 2 weeks of exposure. During the explosion of the power plant Chernobyl in the Soviet Union in 1986, the workers at the plant were exposed to fatal levels of radiation. Estimates are that those who died immediately were exposed to approximately 8,000 REMS of radiation.
Asked in Pregnancy, Medical Technologies, X-Ray
What is the maximum permissible dose for a pregnant x-ray machine operater?
The dose limits for a radiation worker who has notified her employer that she is pregnant are for external radiation exposure, an equivalent dose to the surface of her abdomen for the remainder of her pregnancy of 2 millisieverts; and for internal radiation exposure, 1/20th of the Annual Limit on Intake (ALI) determined by reference to the values set out in the publication entitled "Dose Co-efficients for Intakes of Radionuclides by Workers" being ICRP Publication 68 published for the International Commission on Radiological Protection. The dose limit in a single planned special exposure referred to in regulation 24 (2) is an effective dose of 100 millisieverts.
Asked in Technology
How does a radioactive film badge protect workers?
Can unused wind blown Gunite particles be dangerous to an indivuals health.?
What are devices use to meausure radiation exposure?
A Geiger counter There are several different types of detectors used to quantify radiation exposure. The Geiger counter (GM tube) is one type of meter based on the action of ionizing radiation with the gas in a tube or chamber that is placed in an electric field. Gas is naturally an insulator, meaning most electrical currents do not readily move through a gas. But, if the gas is ionized (electrons are released from the gas atoms) by radiation, then an electrical current can be generated by the motion of the electrons. If the gas is placed in an electric field by applying a positive and negative polarity to the container holding the gas (just like the positive and negative polarity you see on a battery), then ionized, the electrons freed in the gas will travel towards the positive pole, creating a current. The amount of current created will be proportional to the amount of radiation interacting with the gas. So, other gas filled instruments are the ionization chamber and the proportional counter. The ionization chamber is probably a more accurate detector of exposure in a high radiation field than the GM tube. Solid detectors also exist, such as scintillators (give off light in proportion to the amount of radiation interacting with the detector). And, radiation will darken x-ray film. The darkness of the film is also proportional to the amount of radiation interacting with the film/detector. The radiation exposure monitors that radiation workers wear on their bodies are either scintillators or film type detectors.
Asked in Chemistry, Nuclear Physics, Radio
What is radioactive material and why is it harmful?
Radiation poisoning, also called "radiation sickness" or a "creeping dose", is a form of damage to organ tissue due to excessive exposure to ionizing radiation. The term is generally used to refer to acute problems caused by a large dosage of radiation in a short period, though this also has occurred with long term exposure. The clinical name for "radiation sickness" is acute radiation syndrome (ARS) as described by the CDC. A chronic radiation syndrome does exist but is very uncommon; this has been observed among workers in early radium source production sites and in the early days of the Soviet nuclear program. A short exposure can result in acute radiation syndrome; chronic radiation syndrome requires a prolonged high level of exposure. The use of radionuclides in science and industry is strictly regulated in most countries (in the U.S. by the Nuclear Regulatory Commission). In the event of an accidental or deliberate release of radioactive material, either evacuation or sheltering in place will be the recommended measures. Radioactive waste comes from a number of sources. The majority of waste originates from the nuclear fuel cycle and nuclear weapons reprocessing. However, other sources include medical and industrial wastes, as well as naturally occurring radioactive materials (NORM) that can be concentrated as a result of the processing or consumption of coal, oil and gas, and some minerals. source: wikipedia
Asked in Conditions and Diseases, Chemistry
Are creosote fumes toxic?
Asked in Electromagnetic Radiation
Does The film badge keep radiation workers safe from radiation?
Asked in Health
How much nuclear radiation is considered safe for humans?
From MIT: Adult: 5,000 Millirems per year The current federal occupational limit of exposure per year for an adult (the limit for a worker using radiation) is "as low as reasonably achievable; however, not to exceed 5,000 millirems" above the 300+ millirems of natural sources of radiation and any medical radiation. Radiation workers wear badges made of photographic film which indicate the exposure to radiation. Readings typically are taken monthly. A federal advisory committee recommends that the lifetime exposure be limited to a person's age multiplied by 1,000 millirems (example: for a 65-year-old person, 65,000 millirems). Minor: 500 Millirems The maximum permissible exposure for a person under 18 working with radiation is one-tenth the adult limit or not to exceed 500 millirems per year above the 300+ millirems of natural sources, plus medical radiation. This was established in 1957 and reviewed as recently as 1990. Fetus: 500 Millirems Or 50 Per Month (New Rule Jan. 1, 1994) New federal regulations went into effect New Year's Day, establishing for the first time an exposure limit for the embryo or fetus of a pregnant woman exposed to radiation at work. The limit for the gestation period is 500 millirems, with a recommendation that the exposure of a fetus be no more than 50 millirems per month. Weight Variables Like alcohol intoxication levels, levels of exposure to radioactivity (due to radioactivity deposited in the body) depend on a person's weight. A diagnostic tracer of one microcurie of radioactive calcium 45, given orally, would result in an exposure of 3.7 millirems for a 100-pound person, and half of that, 1.85 millirems, for a 200-pound person. Therapeutic Radiation Therapeutic radiation treatment that is delivered by administering radioactive material via the mouth or by injection usually results in high, very localized doses to a small part of the body, which absorbs most of the radioactivity. The radioactivity concentrates and remains in the target organ (for example, the thyroid) for a longer period of time than does the radioactivity that is distributed to the rest of the body. The radiation exposure for other parts of the body is a function of the amount of radioactivity per pound and the time the radioactivity is present in the tissue. As well if you are looking for ways to reduce your risk of radiation there are certain foods and supplements that you can take that can greatly reduce your risk, squidoo.com/radiation-alert-inspector-measure has more answers