Radon decay products definition

Radon decay products means the four (4) short-lived radioactive elements
Sample 1Sample 2Sample 3
Radon decay products means the four (4) short-lived radioactive elements polonium (Po-218), lead (Pb-214), bismuth (Bi-214), and polonium (Po-214) which exist as solids and immediately follow radon (Rn-222) in the decay chain;
Sample 1Sample 2Sample 3
Radon decay products means, for purposes of this Part, the radionuclides formed as a result of the decay of radon-222, specifically polonium-218, bismuth-214, lead-214, and polonium-214; or as a result of the decay of radon-220, specifically polonium-216, lead-212, bismuth-212, and polonium- 212.
Sample 1

Examples of Radon decay products in a sentence

  • Radon decay products of short-life progeny (Po-218, Pb- 214, and Bi-214) might be inhaled into the human res- piratory tract and impose a significant health hazard on occupants [6, 7].Radon gas easily escapes from the ground into theatmosphere and disintegrates through short-lived decay products called radon daughter or radon progeny [8].

  • Radon decay products can contaminate sludge within the pipeline, which in turn may contaminate the pig used to clean the pipeline (Gray, 1991).NORMs in the O&G industry pose a health hazard particularly during maintenance, waste transport and processing, and decommissioning.

  • All investment persons and access persons shall cooperate in all aspects with the Chief Compliance Officer in securing confirmations and statements in a timely manner.

  • The alpha particles emitted by Radon decay products - which are attached to particulate matter collected on the filter surface - are recorded by a passivated implanted silicon semiconductor detector (with a surface of 1200 mm2).

  • Radon decay products can be monitored using instruments that continuously draw air through a filter, while simultaneously counting the alpha particles emitted from radon decay products collected on the filter.

  • Alpha particles emitted by Radon decay products were recorded by a silicon surface barrier detector (ULTRA™ Alpha Detector by ORTEC, with F.W.H.M. of 42 keV) placed a few millimeters in front of the filter in order to optimize the30 efficiency and to allow the detection of alpha particles in air.

  • In our case the measurement of the short- lived Radon decay products is available and their contribution averages about 5 % thus it is taken into account in the calculation.A simplified calculation can be performed in our case; indeed, the sampling time T is much shorter than the half-life of both 210Po and 210Pb and the time t of the post-sampling measurement is much longer than the 210Po half life.

  • The method can be used for personal or area sampling, but personal sampling is preferable as dust exposures are often quite localised (e.g. to a particular job).- Radon decay products are usually sampled in a similar way to dusts, but as they have short half-lives the sampling period must be short and they must be counted immediately after sampling (typically 3 minutes).

  • Nevertheless, the unattached fraction of Radon decay products is very small if the particles number in atmosphere is greater than about 104 particles/cm3 (Gäggeler et al., 1995; Mohammed et al., 2000).

  • Radon decay products have even shorter half-lives than radon and decay within an hour to relatively stable lead-210.

Related to Radon decay products

  • Marijuana products means concentrated marijuana products and marijuana products that are comprised of marijuana and other ingredients and are intended for use or consumption, such as, but not limited to, edible products, ointments, and tinctures.

  • Tobacco products means cigars, cigarettes, cheroots, stogies, periques, granulated, plug cut, crimp cut, ready rubbed, and other smoking tobacco, snuff, snuff flour, moist snuff, cavendish, ping and twist tobacco, fine-cut and other chewing tobaccos, shorts, refuse scraps, clippings, cuttings and sweepings of tobacco, and other kinds and forms of tobacco, prepared in such manner as to be suitable for chewing or smoking in a pipe or otherwise, or both for chewing and smoking.

  • Red Hat Products means Software, Services, Subscriptions and other Red Hat branded offerings made available by Red Hat.

  • Pharmaceutical Product shall have the meaning ascribed to such term in Section 3.1(hh).

  • Marijuana-infused products means products that contain marijuana or marijuana extracts and are intended for human use. The term "marijuana-infused products" does not include useable marijuana.

  • Biological product means a virus, therapeutic serum, toxin, antitoxin, vaccine, blood, blood component or derivative, allergenic product, protein other than a chemically synthesized polypeptide, or analogous product, or arsphenamine or any derivative of arsphenamine or any other trivalent organic arsenic compound, applicable to the prevention, treatment, or cure of a disease or condition of human beings.

  • Commercial Product means any such product as defined in FAR 2.101.

  • Tobacco product means any substance containing tobacco leaf, including but not limited to, cigarettes, cigars, pipe tobacco, hookah tobacco, snuff, chewing tobacco, dipping tobacco, bidis, blunts, clove cigarettes, or any other preparation of tobacco; and any product or formulation of matter containing biologically active amounts of nicotine that is manufactured, sold, offered for sale, or otherwise distributed with the expectation that the product or matter will be introduced into the human body by inhalation; but does not include any cessation product specifically approved by the U.S. Food and Drug Administration for use in treating nicotine or tobacco dependence.

  • Competing Products means any product or service in existence or under development that competes with any product or service of the Company Group about which the Participant obtained Confidential Information or for which the Participant provided advisory services or had sales, origination, marketing, production, distribution, research or development responsibilities in the last twenty-four (24) months of employment with the Company Group.

  • New Products means any product which is not an Enhanced Product or 2 Existing Product but which is substantially similar to an Existing Product with respect to design and function and possesses reasonable performance improvements. If Company desires to purchase an Enhanced or New Product(s) from Supplier, Company shall so notify Supplier and provide Supplier the opportunity to manufacture such Enhanced or New Product(s), subject to the following conditions and procedures.

  • Hemp products means all products made from industrial hemp,

  • Marijuana product means marijuana as defined in 50-32-101 and marijuana-infused products

  • Products means information resources technologies that are, or are related to, EIR.

  • Marihuana-infused product means a topical formulation, tincture, beverage, edible substance, or similar product containing marihuana and other ingredients and that is intended for human consumption.

  • NEC Electronics products means any product developed or manufactured by or for NEC Electronics (as defined above).

  • Medical marijuana product means a product that contains cannabinoids that have been extracted from plant material or the resin therefrom by physical or chemical means and is intended for administration to a licensed patient, including but not limited to concentrates, oils, tinctures, edibles, pills, topical forms, gels, creams, and other derivative forms, except that this term does not include live plant forms.

  • Edible cannabis product means cannabis product that is intended to be used, in whole or in part, for human consumption, including, but not limited to, chewing gum, but excluding products set forth in Division 15 (commencing with Section 32501) of the Food and Agricultural Code. An edible cannabis product is not considered food, as defined by Section 109935 of the Health and Safety Code, or a drug, as defined by Section 109925 of the Health and Safety Code.

  • Competitive Products shall include any product or service that directly or indirectly competes with, is substantially similar to, or serves as a reasonable substitute for, any product or service in research, development or design, or manufactured, produced, sold or distributed by the Company;

  • Alternative nicotine product means any noncombustible product containing nicotine that is intended for human consumption, whether chewed, absorbed, dissolved, or ingested by any other means. "Alternative nicotine product" does not include any nicotine vapor product, tobacco product, or product regulated as a drug or device by the U.S. Food and Drug Administration (FDA) under Chapter V (21

  • complex product means a product which is composed of multiple components which can be replaced permitting disassembly and re-assembly of the product.

  • SAP Products means Software, Documentation, SAP Materials, Services, Subscription Services, Cloud Services and Maintenance Services. “SAP SDK” means SAP software development kit that includes tools such as APIs, source code, redistributable files and instructions. “Services” means SAP’s then-current services offered under and described in detail in the applicable SAP PartnerEdge Model.

  • Vapor product means any:

  • Cannabis products means cannabis that has undergone a process whereby the plant material has been transformed into a concentrate, including, but not limited to, concentrated cannabis, or an edible or topical product containing cannabis or concentrated cannabis and other ingredients.

  • Product means any deliverable under the Contract, which may include commodities, services, technology or software.

  • Existing Products Tangible Products and intangible licensed Products that exist prior to the commencement of work under the contract. Existing Products must be identified on the Product prior to commencement of work or else will be presumed to be Custom Products.

  • Nicotine product means a product that contains nicotine and is not any of the following: