Department of Public Safety › 29-349 Storage, Transportation and Use of Explosives and Blasting Agents

Regulations of Connecticut State AgenciesSec. 29-349-209. Blasting precautionsWhen blasting is done in congested areas or in close proximity to a structure, railway or highway or any other installation that may be damaged, the blaster shall take special precautions in the loading…

Regulations of Connecticut State AgenciesSec. 29-349-210. Blasting on SundayBlasting operations may not be conducted on Sundays or between sunset and sunrise, except with special permission of the State or Local Fire Marshal. (Effective December 24, 1987)

Regulations of Connecticut State AgenciesSec. 29-349-211. Removal of explosives from magazineNo more than a reasonably necessary quantity of explosives or detonators shall be removed from the storage magazines. (Effective December 24, 1987)

Regulations of Connecticut State AgenciesSec. 29-349-212. Blasting precautions for areas of public utilitiesWhenever blasting is being conducted in the vicinity of gas, electric, water, fire alarm, telephone, telegraph and steam utilities, the blaster shall notify the appropriate…

Regulations of Connecticut State AgenciesSec. 29-349-213. Warning signsDuring the period of any blasting operation which is being initiated electrically, the blaster, contractor, or person in charge shall cause signs to be erected on all adjacent highways at a point 350 feet from…

Regulations of Connecticut State AgenciesSec. 29-349-214. Blasting capsElectric blasting caps of different manufacturers shall not be used in the same blast regardless of the manner of connection. (Effective December 24, 1987)

Regulations of Connecticut State AgenciesSec. 29-349-215. Amount of explosives at blast siteUnder no circumstances shall the amount of explosives taken into a blast area exceed the amount estimated by the blaster as necessary for the blast. Such explosives shall be properly stack…

Regulations of Connecticut State AgenciesSec. 29-349-216. Empty containers. DestructionEmpty boxes and paper and fiber packing materials which have previously contained explosives shall not be used again for any purpose, but shall be destroyed by burning at an approved isolated l…

Regulations of Connecticut State AgenciesSec. 29-349-217. Use of damaged materialExplosives or blasting equipment that are obviously deteriorated or damaged shall not be used. (Effective December 24, 1987)

Regulations of Connecticut State AgenciesSec. 29-349-218. Abandoned explosivesNo explosives shall be abandoned.(Effective December 24, 1987)

Regulations of Connecticut State AgenciesSec. 29-349-219. Open flames prohibitedNo open flame light shall be used in the vicinity of explosives.(Effective December 24, 1987)

Regulations of Connecticut State AgenciesSec. 29-349-220. Blasting operationsBlasting operations shall be conducted in accordance with nationally recognized good practices. (Effective December 24, 1987)

Regulations of Connecticut State AgenciesSec. 29-349-221. Water soaked explosivesNo person shall attempt to reclaim or use blasting caps, electric blasting caps or other explosives that have been water soaked, even if dried out. (Effective December 24, 1987)

Regulations of Connecticut State AgenciesSec. 29-349-222. Minimum currentA circuit shall not be fired electrically with less than the minimum current specified by the manufacturer. (Effective December 24, 1987)

Regulations of Connecticut State AgenciesSec. 29-349-223. Blasting cap containersElectric blasting caps shall be kept in their original container or in a closed metal box lined with a soft material such as wood or sponge rubber. The coils and folds in the wires of electric blasti…

Regulations of Connecticut State AgenciesSec. 29-349-224. Extraneous electricity hazardsBlasting areas shall be surveyed for possible hazards caused by extraneous electricity. Non electric initiation shall be used if a current testing device shows more than 0.06 ampere. (Effectiv…

Regulations of Connecticut State AgenciesSec. 29-349-225. Drill hole sizeAll drill holes shall be sufficiently large to admit freely the insertion of the cartridges of explosives. (Effective December 24, 1987)

Regulations of Connecticut State AgenciesSec. 29-349-226. TampingTamping shall be done only with wood rods without exposed metal joints, but non-sparking metal connectors may be used for jointed poles. Plastic tamping poles may be used, provided they have been approved by the Sta…

Regulations of Connecticut State AgenciesSec. 29-349-227. Loading of holesNo holes shall be loaded except those to be fired in the next round of blasting. After loading, all remaining explosives shall be immediately returned to an authorized magazine. (Effective December 24, 1987…

Regulations of Connecticut State AgenciesSec. 29-349-228. Examination for unexploded explosivesDrilling shall not be started until all remaining butts of old holes are examined for unexploded charges, and if any are found, they shall be handled by or under the supervision of a co…

Regulations of Connecticut State AgenciesSec. 29-349-229. Deepening drill holesNo person shall deepen drill holes which have contained explosives.(Effective December 24, 1987)

Regulations of Connecticut State AgenciesSec. 29-349-230. Loading holes completed—return explosives to magazineAfter loading for a blast is completed, all excess blasting caps or electric blasting caps and other explosives shall immediately be returned to their separate storage m…

Regulations of Connecticut State AgenciesSec. 29-349-231. Fuses. LengthSafety fuse shall be cut sufficiently long to extend beyond the collar of the hole, and sufficient in length to assure ample time in retiring from the blast, and shall be not less than three feet in length. (E…

Regulations of Connecticut State AgenciesSec. 29-349-232. Fuses into capSafety fuse shall be cut squarely across and not at a slant. At least one inch of safety fuse shall be cut off, and the freshly cut end immediately inserted into the blasting cap and crimped with a standard c…

Regulations of Connecticut State AgenciesSec. 29-349-233. CartridgesCartridges for use in blasting shall be primed only as required for immediate use.(Effective December 24, 1987)

Regulations of Connecticut State AgenciesSec. 29-349-234. Leading wiresRubber covered or equally insulated wires in good condition shall be used for leading wires. Permanent lines shall be properly supported and insulated and of sufficient size to provide theoretical current requ…

Regulations of Connecticut State AgenciesSec. 29-349-235. Equipment of blasterEach blaster shall be equipped with a galvanometer and blasting machine in good working order; and shall be further equipped with fuse cutters and cap crimpers if cap and fuse is used. (Effective Decemb…

Regulations of Connecticut State AgenciesSec. 29-349-236. Short circuiting leading wiresPrior to firing shots electrically, the leading wires shall be kept short circuited until ready to actually fire the shot. (Effective December 24, 1987)

Regulations of Connecticut State AgenciesSec. 29-349-237. Testing of circuitsBlasters, when testing circuits to charge holes, shall use only blasting galvanometers designed for this purpose. (Effective December 24, 1987)

Regulations of Connecticut State AgenciesSec. 29-349-238. Loading and drilling restrictedNo loading operation shall be conducted within 25 feet of a drilling operation.(Effective December 24, 1987)

Regulations of Connecticut State AgenciesSec. 29-349-239. Springing holesDrill holes shall not be sprung unless they are more than 100 feet from the nearest hole containing explosives. Holes that have been sprung shall not be charged with explosives until the maximum temperature …

Regulations of Connecticut State AgenciesSec. 29-349-240. StemmingStemming shall consist of clean fine clay, sand or crushed rock screenings. The use of leaves or trash is prohibited. Each blast hole shall be stemmed to the collar or to a point high enough to provide sufficient c…

Regulations of Connecticut State AgenciesSec. 29-349-241. Misfire. SuspectedIf a misfire is suspected, all wires or commercial detonating fuse in broken rock shall be carefully traced and search made for unexploded cartridges. If recovery is not made, the Local Fire Marshal shall…

Regulations of Connecticut State AgenciesSec. 29-349-242. Misfire. InvestigationNo person shall be permitted to examine a shot after a misfire until specifically authorized by the person in charge of the blasting operations. If practicable, the misfired charge shall be re-primed …

Regulations of Connecticut State AgenciesSec. 29-349-243. Misfire. PrecautionsIf a misfire occurs or is suspected, no person shall return to the victinity of the misfire until at least one hour after the misfire if the shot was cap and fuse firing, or minimum of 30 minutes for el…

Regulations of Connecticut State AgenciesSec. 29-349-244. Airline hose prohibited within twenty-five feetIn no case shall an airline hose be permitted to be located within 25 feet of a loading operation or a space where explosives are stored or handled. (Effective December 24, 19…

Regulations of Connecticut State AgenciesSec. 29-349-245. Loaded holes to be guarded. Warning whistleWhen a charge of explosives has been loaded there shall be a constant guard over same until the blast is fired. Before a blast is fired, a loud warning signal shall be given by th…

Regulations of Connecticut State AgenciesSec. 29-349-246. Blasting caps in congested areasOnly electric blasting caps or commercial detonating fuse shall be used for blasting operations in congested districts, or on highways, or adjacent to highways open to traffic, except where …

Regulations of Connecticut State AgenciesSec. 29-349-247. Cap crimpersWhen fuse is used, the blasting cap shall be securely attached to the fuse with a standard ring type cap crimper. All primers shall be assembled at least 50 feet from any magazine. (Effective December 24, 1987)

Regulations of Connecticut State AgenciesSec. 29-349-248. Accidents, thefts, fires to be reportedAll accidents, thefts or fires occurring with the use of explosives shall be reported to the Local Fire Marshal immediately by verbal communication and, within 24 hours, shall report …

Regulations of Connecticut State AgenciesSec. 29-349-249. Inserting. Blasting capsNo blasting cap shall be inserted in the explosives without first making a hole in the cartridge for the cap with a wooden or non-ferrous metal punch of proper size or standard cap crimper. (Effecti…

Regulations of Connecticut State AgenciesSec. 29-349-250. Misfired explosives, not to be dug outExplosives shall not be extracted from a hole that has once been charged or has misfired unless it is impossible to safely detonate the unexploded charge by insertion of a fresh additi…

Regulations of Connecticut State AgenciesSec. 29-349-251. Lead wire connector to fire shotOnly the man making leading wire connections in electric firing shall fire the shot. All connections should be made from bore hole back to the source of the firing current, and the leading w…

Regulations of Connecticut State AgenciesSec. 29-349-252. Extraneous electricity. PrecautionsDue precautions shall be taken to prevent accidental discharge of electric blasting caps from current induced by radar, radio transmitters, adjacent power lines, lightning, dust storms an…

Regulations of Connecticut State AgenciesSec. 29-349-253. Railroad carsExcept in an emergency, and with the permission of the State Fire Marshal, no person shall have or keep explosives in a railway car unless said car and contents and methods of loading are in accordance with th…

Regulations of Connecticut State AgenciesSec. 29-349-254. Packing to conform to D.O.T. regulationsNo person shall deliver any explosives to any carrier unless such explosive conforms in all respects, including marking and packaging to the U.S. Department of Transportation regulat…

Regulations of Connecticut State AgenciesSec. 29-349-255. Warning signsEvery railway car containing explosives which has reached its destination, or is stopped in transit so as no longer to be in interstate commerce shall have attached to both sides and ends of the car, cards wit…