Current through Register Vol. 56, No. 18, September 16, 2024
(a) In addition to the
recordkeeping of
12:190-3.1 5, holders of a "permit to
use" explosives shall comply with this section.
(b) The person having a "permit to use" explosives
shall maintain a permanent record of each blast. At least one copy of this record
shall be maintained at the mining office or construction site. In the absence of a
blast site office, the record shall be maintained at the principal place of business
of the employer.
(c) The person having a
"permit to use" explosives shall maintain a record of each blast which shall include
the following:
1. Name and address of person
responsible for the project;
2. Name and
permit number of blaster in charge;
3.
Name, address and specific locations at the address of the blasting
project;
4. Identification number for
each blast in sequence by project on an annual basis;
5. Date and time of the blast;
6. General type of material blasted;
7. Nature of blasting, such as bank, trench or
pre-split;
8. Weather conditions,
including wind speed direction, temperature, and sky conditions;
9. Blast hole description, including hole sizes,
inclinations, depths, sub-drilling, number of holes, burden spacing, and number of
rows of holes;
10. Depth of
stemming;
11. Depth and placement
locations of decking used;
12. Kind of
explosives used;
13. Total amount of
explosives used;
14. Maximum amount of
explosives fired on any time delay period;
15. The number of holes fired included in the
maximum pounds per delay;
16. Number,
brand name and type of electric blasting caps used and the number of individual
delay periods;
17. Actual firing time
where electric delay blasting caps do not fall within the manufacturer's sequence of
delay time;
18. Size and total length of
detonating cord, when used, delay periods, and type of precaution to deaden sound
effects;
19. All pertinent information
on delay periods, when other nonelectric initiating systems are used;
20. A plan indicating blast hole layout and a
cross-section of a blast hole showing the maximum pounds per delay, burden, spacing,
depth of hole, subdrilling, stemming depth, decking location, and locations of
detonators and explosives.
21. The
horizontal distance and direction to the nearest construction from the blast site,
that is neither owned nor leased by the person conducting or contracting for the
blasting operation closest to the nearest loaded blast hole to be detonated;
and
22. The names of the instruments,
operator, interpreter and statement of compliance in accordance with (f)
below.
(d) When more than one
similar blast is to be conducted in a single day, one form may be utilized for
compliance with (c) above, provided the number of blasts is included and all
applicable questions are answered for each blast.
(e) The person having a "permit to use" explosives
shall maintain a record of all misfires which shall include the following:
1. The address and involved portion of the mine or
construction site;
2. The date of
misfire;
3. The number of holes involved
in the misfire;
4. The cause of the
misfire;
5. The method used to reblast
the misfire;
6. The name of the blaster
in responsible charge of handling the misfire; and
7. The signature of the blaster making the
report.
(f) When required by
N.J.A.C. 12:190-7, the person holding a "permit to use" explosives shall maintain a
record of ground vibration readings and air blast effect readings, which shall
include the following:
1. Identification of the
instrument used;
2. The name of the
observer;
3. The name of the
interpreter;
4. The distance in feet and
direction of the nearest construction from the blast site that is neither owned nor
leased by the person conducting or contracting for the blasting operation closest to
the nearest loaded blast hole to be detonated;
5. The distance in feet and direction of the
instrument locations from the blast site;
6. The type of surface at the instrument
location;
7. The maximum peak particle
velocity of any one of the three mutually perpendicular components of the ground
motion in the vertical and horizontal directions at the specific location in inches
per second and the frequency range of the blast; and
8. The sound measurement in decibels measured on
the linear frequency response or the overpressure in pounds per square
inch.
