R614-4-2. Definitions

A. General Definitions

1. "Act" means the Utah Occupational Safety and Health Act of 1973.

2. "Administration" means the Division of Occupational Safety and Health of the Labor Commission, also known as UOSH (Utah Occupational Safety and Health).

3. "Administrator" means the director of the Division of Occupational Safety and Health.

4. "Commission" means the Labor Commission.

5. "Employee" includes any person suffered or permitted to work by an employer.

6. "Employer" means:

a. The state;

b. Each county, city, town, and school district in the state; and

c. Every person, firm, and private corporation, including public utilities, having one or more workers or operatives regularly employed in the same business, or in or about the same establishment, under any contract of hire.

B. Explosives Definitions

1. "American Table of Distances" also known as Quantity Distance Tables - means American Table of Distances for Storage of Explosives as revised and approved by the Institute of the Makers of Explosives, November 5, 1971.

2. "Ammonium nitrate" - A chemical compound represented by the formula NH₄NO₃.

3. "Ammunition" - All components and any explosives case or contrivance prepared to form a charge, complete round, or cartridge for cannon, howitzer, mortar, or small arms, or for any other weapon, torpedo warhead, mine, depth charge, demolition charge, fuse, detonator, projectile, grenade, guided missile, rocket, pyrotechnics; and all chemical agents, fillers and associated hazardous materials.

4. "Ammunition and explosive materials operating area" - A restricted area specifically designed and set aside from other positions of an installation for the manufacturing, processing, storing and otherwise handling of ammunition or explosive materials.

5. "Approved" or "approval" - Means sanctioned, endorsed, accredited, certified, or accepted as satisfactory by a duly constituted and nationally recognized authority or agency.

6. "Authorized person" - Means a person approved or assigned by the employer to perform a specific type of duties or to be at a specific location or locations at the job site.

7. "Barricaded" - An intervening approved barrier, natural or artificial, of such type, size and construction as to limit the effect of an explosion on nearby buildings or exposures.

8. "Blasting agent" - Any material or mixture, consisting of fuel and oxidizer, intended for blasting, not otherwise defined as an explosive. Provided, that the finished product as mixed for use or shipment, cannot be detonated by means of a number 8 test blasting cap when unconfined.

9. "Blast area" - The area of a blast, including the area immediately adjacent, within the influence of flying rock missiles.

10. "Blaster" - The person or persons authorized to use explosives for blasting purposes and meeting the qualifications contained in Part 109.22.2.

11. "Blasting cap" - A metallic tube closed at one end, containing a charge of one or more detonating compounds, and designed for and capable of detonation from the sparks or flame from a safety fuse inserted and crimped into the open end.

12. "Bulk mix delivery equipment" - Equipment (Usually a motor vehicle with or without mechanical delivery device) that transports materials in bulk form for mixing, or loading directly into blast holes, or both.

13. "Bus wire" - An expendable wire, used in parallel or series in parallel circuits, to which are connected the leg wires of electric blasting caps.

14. "Compatibility" - The ability of explosives, explosive materials, ingredients or compositions to remain unaffected when in contact with other materials or containers.

15. "Connecting wire" - An insulated expendable wire used between electric blasting caps and the leading wires or between the bus wire and the leading wires.

16. "Deflagration" - A very rapid combustion, sometimes accompanied by flame, sparks, or spattering of burning particles. Although classed as an explosion a deflagration generally implies the burning of a substance with self-contained oxygen so that the reaction zone advances into the unreacted material at less than the velocity of sound.

17. "Delay mechanism" - A mechanism designed to initiate detonation at a predetermined period of time after energy is applied to the ignition system.

18. "Detonate or detonation" - To be changed by exothermic chemical reaction usually from a solid or liquid to a gas with such rapidity that the rate of advance of the reaction zone into the unreacted material exceeds the velocity of sound in the unreacted material; that is, the advancing reaction zone is preceded by a shock wave.

19. "Detonating cord" - A flexible cord containing a center core of high explosive and used to initiate other explosives.

20. "Detonator" - Any device containing a detonating charge that is used for initiating detonation in an explosive; the term includes, but is not limited to, electric blasting caps of instantaneous and delay types, and the non-electric instantaneous and delay blasting caps.

21. "Electric blasting cap" - A blasting cap designed for and capable of detonation by means of an electric current.

22. "Emulsion explosive" - An explosive material containing substantial amounts of oxidizers dissolved in water droplets surrounded by an immiscible fuel: May be classified as Explosives Class A, Explosives Class B, or blasting agents.

23. "Explosive" - The term explosive includes any chemical compound or mechanical mixture which, when subjected to heat, impact, friction, detonation or other suitable initiation, undergoes a very rapid chemical change with the evolution of large volumes of highly heated gases which exert pressures in the surrounding medium. The term applies to materials that either detonate or deflagrate.

24. "Class A Explosives" - Explosives which possess detonating or otherwise maximum hazard; such as, but not limited to, dynamite, nitroglycerin, lead azide, blasting caps and detonating primers.

25. "Class B Explosives" - Explosives which possess flammable hazard; such as, but not limited to, propellant explosives, photographic flash powders, and some special fireworks.

26. "Class C Explosives" - Explosives which contain Class A or Class B explosives, or both, as components but in restricted quantities.

27. "Explosive Materials" - These include explosives, blasting agents and detonators. This term includes, but is not limited to, dynamite and other high explosives, slurrys, emulsions, water gels, blasting agents, black powder, pellet powder, initiating explosives, detonators, safety fuses, squibs, detonating cord, igniter cord, igniters, pyrotechnics, pyrotechnic compositions, fireworks (special and common), ammunition, propellent and propellent compositions.

28. "Fireworks" - A common synonym for Pyrotechnics (special and common).

Special Fireworks - are Class B explosives as defined by the U.S. Department of Transportation.

Common Fireworks - are Class C explosives as defined by the U.S. Department of Transportation.

29. "Fuse Lighters" - Special devices for the purpose of igniting safety fuse.

30. "Hazard" - A source of danger; exposure or liability to injury or harm.

31. "Inert" - Containing no explosives, active chemicals or pyrotechnics.

32. "Leading Wire" - An insulated wire used between the electric power source and the electric blasting cap circuit.

33. "Magazine" - Any building or structure or container other than an explosives manufacturing building approved for the storage of explosive materials.

34. "Mass Detonation" - Mass Explode - The virtually instantaneous explosion of a mass of explosives when only a small portion is subjected to fire, severe concussion or impact, the impulse of an initiating agent, or to the effect of a considerable discharge of energy from without.

35. "Misfire" - An explosive charge which failed to detonate.

36. "Motor Vehicle" - Any self-propelled vehicle.

37. "Oxidizer" or "Oxidizing Material" - A substance, such as a nitrate, that readily yields oxygen or other oxidizing substance to stimulate the combustion of organic matter or other fuel.

38. "Plant" - The land, buildings, and machinery used in carrying on a trade or business.

39. "Primer" - A cartridge or container of explosives into which a detonator is inserted or attached.

40. "Propellant" - An explosive material whose rate of combustion is low enough, and its other properties suitable, to permit its use as a propelling charge. A propellant may be either solid or liquid. A single base propellant composition consists primarily of matrix of nitrocellulose. A double base propellant composition contains nitrocellulose and nitroglycerine. A composite propellant composition contains an oxidizing agent in a matrix of binder.

41. "Pyrotechnics or Pyrotechnic Compositions" - A mixture of materials consisting essentially of an oxidizing agent (oxident) and a reducing agent (fuel), that is capable of producing an explosive self sustaining reaction when heated to its ignition temperature; such as, but not limited to, devices used to produce sound, colored lights or smokes for signaling, a bright light for illumination, and time delays.

42. "Qualified" - Means one who, by possession of a recognized degree, certificate, or professional standing, or who by extensive knowledge, training, and experience, has successfully demonstrated his ability to solve or resolve problems relating to the subject matter, the work or the project.

43. "Restricted Area" - Any area, from which personnel, aircraft, or vehicles, other than required for operations, are excluded for reasons of safety and security.

44. "Safety Fuse" - A flexible cord containing an internal burning medium by which fire or flame is conveyed at a continuous and uniform rate from the point of ignition to the point of use, usually a detonator.

45. "Semiconductive Hose" - A hose with an electrical resistance high enough to limit flow of stray electric currents to safe levels, yet not so high as to prevent drainage of static electric charges to ground. Hose of not more than 2 megohms resistance over this entire length and of not less than 5,000 ohms per foot meets the requirement.

46. "Sensitivity" - A physical characteristic of an explosive material, classifying its ability to react to externally applied energy or changes in environment.

47. "Shield" - A safeguard securely braced and of a strength proven sufficient to withstand the effects of the maximum credible incident involving the item being handled.

48. "Slurry" - An explosive material containing substantial portions of a liquid, oxidizers, and fuel, plus a thickener. Slurrys may be classified as Explosives Class A, Explosives Class B, or Blasting Agents.

49. "Small Arms Ammunition" - Any shotgun, rifle, pistol, or revolver cartridge, and cartridges for propellant-actuated power devices and industrial guns.

50. "Small Arms Ammunition Primers" - Are small percussion-sensitive explosive charges, encased in a cup, used to ignite propellant powder.

51. "Smokeless Propellants" - Solid propellants, commonly called smokeless powders in the trade, used in small arms ammunition, cannon, rockets, propellant-actuated power devices, etc.

52. "Stability" - The ability of an explosive material to retain chemical and physical properties when exposed to specific environmental conditions over a particular period of time.

53. "Stemming" - A suitable inert or incombustible device used to confine or separate explosives in a drill hole, or to cover explosives in mudcapping.

54. "Substantial Dividing Wall" - A structure designed to resist the effects of accidental explosions or to prevent propagation of detonation by blast or fragments.

55. "Water Gels" - An explosive material containing substantial portions of water, oxidizers, and fuel, plus a cross-linking agent. Water gels may be classified as Explosives Class A, Explosives Class B, or Blasting Agents.