Section 675 IAC 26-3-1 - Adoption of NFPA 495; Explosive Materials CodeAuthority: IC 22-11-14.5-3; IC 22-13; IC 35-47.5-4-4.5
Affected: IC 35-47-1-5; IC 35-47.5-5-11
Sec. 1.
(a) That certain document, being titled the NFPA 495, Explosive Materials Code, 2001 edition, published by the National Fire Protection Association, 1 Batterymarch Park, Quincy, Massachusetts 02269, is hereby incorporated by reference as if fully set out in this rule save and except those revisions made in this rule.(b) This rule is available for reference and review at the Fire and Building Services Department, Indiana Government Center-South, 402 West Washington Street, W246, Indianapolis, Indiana 46204.(c) Delete Chapter 1 in its entirety.(d) Delete Chapter 2 in its entirety.(e) Amend Section 3.3.7 to read as follows: Blaster means a licensed regulated explosive use-blaster.(f) Add Section 3.3.45.1 to read as follows: Regulated explosive has the meaning set forth in IC 35-47.5-2-13.(g) Add Section 3.3.55.1 to read as follows: Stemming means the inert material, such as drill cuttings or crushed stone, used in a blasthole to confine the gaseous products of detonation.(h) Add Section 3.3.55.2 to read as follows: Tamping means the process of compressing the stemming or regulated explosive in a blasthole.(i) Delete Section 4.1 in its entirety.(j) Amend Section 4.2.1 to read as follows: No person shall take possession of explosive materials for the purpose of detonation under the person's direction or control without first obtaining a licensed regulated explosive use-operator license.(k) Add Section 4.2.1.1 to read as follows: The loading and firing of explosive materials shall be conducted only under the control of a licensed regulated explosive use-blaster.(l) Amend Section 4.2.3 to read as follows: Every licensed regulated explosive use-operator and every licensed regulated explosive use-blaster shall be responsible for the results and consequences of any loading or firing of explosive materials. All loading and firing shall be supervised and performed by a licensed regulated explosive use-blaster.(m) Delete Section 4.3 in its entirety.(n) Delete Section 4.4 in its entirety.(o) Delete Section 4.5 in its entirety.(p) Delete Section 4.6 in its entirety.(q) Delete Section 4.7 in its entirety.(r) Amend Section 4.8.1 to read as follows: A licensed regulated explosive use-operator shall keep a record of all transactions or operations involving explosive materials.(s) Delete Section 4.8.2 in its entirety.(t) Amend Section 4.8.3 to read as follows: A licensed regulated explosive use-operator shall keep a daily record of all explosive materials received and fired or otherwise disposed of by the licensed regulated explosive use-operator.(u) Add Section 4.8.3.1 to read as follows: A record of each blast shall be kept. All such records shall contain at least the following data: (1) The name of the licensed regulated explosive use-operator.(2) The exact location of the blast, with date and time of detonation.(3) The name, signature, and license number of the licensed regulated explosive use-blaster on site at the blast.(4) The type of material blasted.(5) The number of holes, burden, and spacing.(6) The diameter and depth of holes.(7) The types of explosives used.(8) The total amount of explosives used, in pounds.(9) The maximum weight of explosives per delay period of eight (8) milliseconds or greater.(10) The method of firing and type of circuit.(11) The direction, distance in feet, and identification of the nearest Class 1 or Class 2 structure that is neither owned nor operated by the entity in subdivision (1) or (3).(12) The weather conditions.(13) The type and height or length of stemming.(14) A statement as to whether mats or other protections against flyrock were used.(15) The type of detonators used and delay periods used.(16) Seismograph readings, where required, shall accurately indicate the exact location of the seismograph and the distance from the seismograph to the blast. The seismograph shall create a visually inspectable Cartesian presentation of all three (3) mutually perpendicular vibration traces and one (1) acoustic channel versus time, and having both vertical and horizontal scaling factors.(17) Seismograph records, where used, shall include the following:(A) The name of the person analyzing the seismographic record.(B) The seismograph reading.(18) The maximum number of charges within any period of eight (8) milliseconds.(19) A sketch of the blast pattern, including the number of holes, burden and spacing delay pattern, and a hole profile.(v) Amend Section 4.8.4 to read as follows: A licensed regulated explosive use-operator shall notify the office of the state fire marshal of any change in address.(w) Amend Section 4.8.5 to read as follows: A licensed regulated explosive use-operator shall notify the office of the state fire marshal of the loss, theft, or unlawful removal of explosive materials within twenty-four (24) hours.(x) Delete Chapter 5 in its entirety.(y) Delete Chapter 6 in its entirety.(z) Delete Chapter 7 in its entirety.(aa) Delete Chapter 8 in its entirety.(bb) Amend Section 9.1.1 to read as follows: All licensed regulated explosive use-blasters and licensed regulated explosive use-operators shall comply with all applicable federal and state laws with respect to the sale, possession, storage, and use of explosive materials.(cc) Delete Section 9.1.2 in its entirety.(dd) Amend Section 9.1.3 to read as follows: Explosive materials shall be used only by individuals who are under the direct, on-site supervision of a licensed regulated explosive use-blaster.(ee) Amend Section 9.1.3.1 to read as follows: Loading and firing shall be performed or supervised directly by a licensed regulated explosive use-blaster who is present at the blast site.(ff) Amend Section 9.1.3.2 to read as follows: Trainees, helpers, and other individuals who are not licensed regulated explosive use-blasters shall work only under the direct, on-site supervision of a licensed regulated explosive use-blaster.(gg) Amend Section 9.1.4.3 to read as follows: No individual within fifty (50) feet of any location where explosives are being handled or used shall carry any matches, open light, other fire or flame, or firearms (as defined in IC 35-47-1-5 ).(hh) Amend Section 9.1.5 to substitute "individual" for "person".(ii) Delete Section 9.1.8 in its entirety.(jj) Delete Section 9.1.9 in its entirety.(kk) Delete Section 9.1.10 in its entirety.(ll) Delete Section 9.1.11 in its entirety.(mm) Amend Section 9.1.12 to read as follows: Where blasting is done in a congested area or in close proximity to a structure, railway, highway, or any other installation that could be affected, special precautions shall be taken.(nn) Amend Section 9.1.13 to read as follows: Individuals authorized to prepare explosive charges and licensed blasters shall use every reasonable precaution to ensure the safety of the general public and workers.(oo) Amend Section 9.1.15 to read as follows: Where blasting is conducted in the vicinity of utility lines or rights-of-way, the licensed regulated explosive use-operator shall notify the appropriate representatives of the utilities at least twenty-four (24) hours in advance of blasting, specifying the location and the intended time of such blasting. Verbal notice shall be confirmed with written notice.(pp) Amend Section 9.1.15 to delete the exception.(qq) Amend Section 9.1.16 to delete items (1) and (2).(rr) Amend the heading for Section 9.2 to read as follows: Blasthole loading.(ss) Amend Section 9.3.5 to read as follows: All electric blasting circuits and other initiating systems whose continuity can be tested shall be tested with a blasting galvanometer or other blast continuity test instrument as recommended by the product manufacturer. All electrically initiated blasts shall be made by using blasting machines suitable for the circuitry being fired.(tt) Amend Section 9.5.4 to read as follows: Where there are misfires using cap and fuse, all personnel shall stay clear of the blast site for at least thirty (30) minutes.(uu) Amend Section 9.5.5 to read as follows: Where there are misfires using other nonelectric detonators, that is, other than cap and fuse, all personnel shall stay clear of the blast site for at least fifteen (15) minutes, and, where there are misfires using electric detonators, all personnel shall stay clear of the blast site for at least thirty (30) minutes.(vv) Amend Section 9.5.6 to read as follows: Misfires shall be the responsibility of the licensed regulated explosive use-blaster in charge of the blasting operation.(ww) Amend Section 9.6.3 to read as follows: All explosive materials that are obviously deteriorated or damaged shall not be used and shall be destroyed in accordance with the manufacturer's guidelines or instructions.(xx) Amend Section 10.1.1 to read as follows: At all blasting operations, the maximum ground vibration at any dwelling, public building, school, church, or commercial or institutional building adjacent to the blasting site shall not exceed the limitations specified in Table 10.1.1 and Table 10.1.2(b) unless the license use permittee has a written waiver from the property owner.(yy) Amend Table 10.1.1 to read as follows: Table 10.1.1 Peak Particle Velocity Limits
| Distance from Blasting Site | Maximum Allowable Peak Particle Velocity |
| m | ft | mm/s | in./s |
| all distances | all distances | 25.4 | 1.00 |
(zz) Amend Section 10.1.2 to read as follows: In lieu of Table 10.1.1, a licensed regulated explosive use-operator shall have the option to use the graph shown in Figure 10.1.2(b) to limit peak particle velocity based upon the frequency of the blast vibration.(aaa) Delete Figure 10.1.2(a) in its entirety.(bbb) Amend Section 10.1.3 to read as follows: Unless a licensed regulated explosive use-operator uses a seismograph to monitor a blast to ensure compliance with Table 10.1.1 or Figure 10.1.2(b), the licensed regulated explosive use-operator shall comply with the scaled distance equations shown in Table 10.1.3.(ccc) Amend Table 10.1.3 to read as follows: Table 10.1.3 Scaled Distance Equations
| Distance from Blasting Site | Scaled Distance* Equation |
| All distances | W(lb) = [D(ft)/60]2 |
| {W(kg) = [D(m)/27.15]2 } |
W equals the maximum weight of regulated explosives in pounds (or kilograms) that can be detonated per delay interval of 8 milliseconds or longer.
D equals the distance in feet (or meters) from the blast to the nearest dwelling, public building, school, church, or commercial or institutional building not owned, leased, or contracted by the licensed regulated explosive use-operator, or on property for which the owner has not provided a written waiver to the licensed regulated explosive use-operator.
*To convert English units of scaled distances (ft/lb2) to metric units (m/kg2), divide by a factor of 2.21.
(ddd) Amend Section 10.1.4 to read as follows: Where the licensed regulated explosive use-operator is using scaled distance equations, the office of the state fire marshal may require seismographic monitoring of shots.(eee) Amend Section 10.2.1 to read as follows: Airblast at the locations of any dwelling, public building, school, church, or commercial or institutional building not owned, leased, or contracted by the licensed regulated explosive use-operator, or on property for which the owner has not provided a written waiver to the licensed regulated explosive use-operator, shall not exceed the maximum limits specified in Table 10.2.1.(fff) Amend Table 10.2.1 to read as follows: Table 10.2.1 Air Blast Limits
| Lower Frequency of Measuring System [Hz (± 3 dcb)] | | Measurement Level (dcb) |
| 2 Hz or lower ................................. | flat response | 133 peak |
| 6 Hz or lower ................................. | flat response | 129 peak |
(ggg) Amend Section 10.3.2 to read as follows: Flyrock shall not be propelled from the blast site onto property not contracted by the licensed regulated explosive use-operator or onto property for which the owner has not provided a written waiver to the licensed regulated explosive use-operator.(hhh) Delete Chapter 11 in its entirety.(iii) Delete Chapter 12 in its entirety.Fire Prevention and Building Safety Commission; 675 IAC 26-3-1; filed Sep 21, 2005, 1:30 p.m.: 29 IR 492, eff Dec 1, 2005; errata filed Aug 3, 2010, 8:11 a.m.: 20100818-IR-675100494ACA; readopted filed Aug 4, 2011, 8:35 a.m.: 20110831-IR-675110254RFAReadopted filed 3/10/2017, 9:37 a.m.: 20170405-IR-675170005RFA