Laboratory testing of explosives

Lab activity

The laboratory performs scientifi c and educational activities and testing of commercial explosives, the initial system and initiating devices, pyrotechnic products for entertainment and technical purposes as well as other explosive materials. The laboratory is accredited in accordance with the requirements of HRN EN ISO/IEC 17025:2007 for 27 test methods, while conducting tests according to a series of methods outside the scope of accreditation. The laboratory, in cooperation with the Agency forpotentially explosive atmospheres, operates within the national body in charge with the assessment of civil explosives and pyrotechnic products with the regulations of the European Commission. The activity takes place in the laboratory facilities at the Faculty of Mining, Geology and Petroleum Engineering, and the two outside testing laboratory-polygons.

Head of the Lab: This email address is being protected from spambots. You need JavaScript enabled to view it., Assoc. Prof., PhD

Services:

 Analytical procedure and test method

Testing method

SERVICES

Materials

 

Explosives for civil uses – High explosives

HRN EN 13631-3:2007
EN 13631-3:2004

Determination of sensitiveness to friction of explosives

HRN EN 13631-4:2004
EN 13631-4:2002

Determination of sensitiveness to impact of explosives

HRN EN 13631-5:2004
EN 13631-5:2002

Determination of resistance to water

HRN EN 13631-10:2004
EN 13631-10:2003

Method for the verification of the means of initiation

HRN EN 13631-11:2004
EN 13631-11:2003

Determination of the transmission of detonation

HRN EN 13631-13:2004
EN 13631-13:2003

Determination of density

HRN EN 13631-14:2004
EN 13631-14:2003

Determination of the velocity of detonation

 

Explosives for civil uses – Detonators and relays

HRN EN 13763-2:2004
EN 13763-2:2002

Determination of thermal stability

HRN EN 13763-16:2007
EN 13763-16:2003

Determination of delay accuracy

HRN EN 13763-23:2004
EN 13763-23:2002

Determination of the shockwave velocity of shock tube

HRN EN 13763-20:2006
EN 13763-20:2003

Determination of total electrical resistance of electric detonators

HRN EN 13763-17:2006
EN 13763-17:2003

Determination of no-fire current of electric detonators

HRN EN 13763-19:2006
EN 13763-19:2003

Determination of firing impulse of electric detonators

 

Explosives for civil uses – Detonating cords and safety fuses

HRN EN 13630-2:2004
EN 13630-2:2002

Determination of thermal stability of detonating cords and safety fuses

HRN EN 13630-3:2004
EN 13630-3:2002

Determination of sensitiveness to friction of the core of detonating cords

HRN EN 13630-7:2004
EN 13630-7:2002

Determination of reliability of initiation of detonating cord

HRN EN 13630-9:2007
EN 13630-9:2004

Determination of transmission of detonation from detonating cord to detonating cord

HRN EN 13630-10:2007
EN 13630-10:2005

Determination of initiating  capability of detonating cords

HRN EN 13630-11:2004
EN 13630-11:2002

Determination of velocity of detonation of detonating cords

HRN EN 13630-12:2004
EN 13630-12:2002

Determination of burning  duration of safety fuses

 

Explosives for civil uses – Propellants and rocket propellants

HRN EN 13938-4:2004
EN 13938-4:2003

Determination of burning rate under ambient conditions

HRN EN 13938-7:2007
EN 13938-7:2004

Determination of black powder properties

 

Pyrotechnic articles – fireworks of category 1, 2 and 3

HRN EN 15947-4:2016
EN 15947-4:2015

Determination of physical and mechanical properties and functions of pyrotechnic articles

 

Pyrotechnic articles – fireworks of category 4

HRN EN 16261-3:2012
EN 16261-3:2012

Determination of physical and mechanical properties and functions of pyrotechnic articles

 

Theatrical pyrotechnic articles of category 1, 2

HRN EN 16256-5:2012
EN 16256-5:2012

Determination of physical and mechanical properties and functions of pyrotechnic articles

Small and medium-sized equipment
Name inventory Tech.characteristics
Application                     
Image

Datalogger – pressure meter PCE-DB2

Barometric pressure: 700 – 1100 hPa = < 1% measuring range, ± 1% digit,
Absoute pressure: - 1000…0…+2000 mbar = < 0,5% FSP, ± 1% digit,
Pressure difference: - 200…0…+200 mbar = < 0,5% FSP, ± 1% digit,
Pressure difference: - 2000…0…+2000 mbar = < 0,5% FSP, ± 1% digit,

Measurement of barometric pressure.

Datalogermjerac tlaka

Electronic clock Explomet-FO-2000

Accuracy: ± 0,1 µs
Measurement range: 0,1 µs do  100000 s
Data analysis: program package: WinExplomet

Measurement of delay accuracy of detonators, measurement of the shock-wave velocity of scock tube, measurement of velocity of detonation of explosives and detonating cords, measurement of burning rate of propellants.

Elektronicki sat Explomet-FO

Laboratory for Testing of Explosive Materials

Accuracy: ± 0,1 µs
Measurement range: 0,1 µs do  100000 s
Data analysis: program package: WinExplomet

Measurement of delay accuracy of detonators, measurement of the shock-wave velocity of scock tube, measurement of velocity of detonation of explosives and detonating cords, measurement of burning rate of propellants.

Elektronicki sat Explomet-FO-Multichanel

Chamber for heating samples, MEMMERT UP400

Temperature: 0 °C to + 230 °C,
Accuracy: ± 1 °C,
Chamber operation and data analysis: program package CELSIUS.

Heating samples.

Komora

Chamber for cooling samples

Temperature: -35 °C to +30 °C,
Accuracy: ± 1 °C,
Chamber operation and data analysis: program package JUMO.

Hlađenje uzoraka.

Komora 2

Laboratory Scale HF-1200G

Measurement range: 0 g – 1250 g,
Accuracy: 0,01 g.

Precise measurement of weight.

Laboratorijska vaga

Laboratory Scale 572-45

Measurement range: 0 g – 12100 g,
Accuracy: 0,1 g.

Precise measurement of weight.

Laboratorijska vaga 2

Laboratory Scale PIONEER PA114

Measurement range: 0 g – 110 g,
Accuracy: 0,0001 g.

Precise measurement of weight.

Laboratorijska vaga 3

Data Logger – Humidity and Temperature measurement NT2-D-CL

Measurement range: 0 – 100 % RH, -30 °C to 70 °C.
Accuracy 1.5 %RH, 0.3 °C.

Measurement of air temperature and humidity.

Dataloger

Termometer PT 100-4w AC1904

Measurement range: - 50 °C to + 110 °C
Accuracy: ± 0,5 °C,
Waterproof

Measurement of sample temperature.

Mjerac

Four channel oscilloscope WaveRunner 64Xi, 600 MHz

Frequency bandwith: 600 MHz,
Number of channels: 4,
Sampling frequency: 5 GS/s, standard, 10 GS/s, maximal,
Memory: 12.5 Mpts/channel, standard, 25 Mpts, maximal,
Time range: from 200 ps – 10 s/div to 1000 s,
Voltage range: 2 m/V – 10V/div.

Measurement of one or more fast changing electrical signals, depending on time or any other electrical value.

Cetverokanalni oscilloskop WaveRunner

High-speed digital video camera MREL

Recording speed: 16000 fps

Recording of high-speed processes.

Superbrza kamera

Device for Determining the Sensitivity of Explosives to Friction

From 5 N to 360 N

Determining the sensitivity of explosives to friction

Uredaj za ispitivanje eksplozivnih tvari

Device for Determining the Sensitivity of Explosives to Impact

To 600 J

Determining the sensitivity of explosives to friction

Uredaj za ispitivanje eksplozivnih tvari 2 

Fall Hammer for Determining the Sensitivity of Non-electric Shock Tube to Impact

To 1200 J

Determining the sensitivity of non-electric shock tube to impact

Padajuci cekic

Digital Caliper, MITUTOYO

Measurement range: 0 mm to 150 mm
Accuracy: ± 0,01 mm

Precise measurement of length

Digitalno pomicno mjerilo

Protactor (big and small), SCHUT

Measurement range: 10 ° to 170 °
Accuracy: ± 1 °

Precise measurement of angles.

Kutomjer

Dial Indicator, SCHUT

Measurement range: 0 mm to 30 mm

Precise measurement of deviation of measure

Mjerna ura

Anemometer, PCE-00

Measurement range: 0,4 m/s to 25 m/s
Accuracy: ± 0,2 m/s 

Measurement of velocity of air

Anemometer 

Digital sound analyzer, PCE DSA-50

Measurement range: 20 dB to 135 dB
Accuracy: class 1 according to standard EN 61672-1:2002

Measurement of sound pressure levels

Bukomjer

Digital Light Meter, DT-1308, CEM

Measurement range: 0 lux to 400000 lux
Accuracy: ± 5% of reading ± 0,5% of measurement range

Measurement of intensity of the light source.

Luksometar

Stopwatch, PROFIL 1

Measurement range: 0 s to 35999,99 s
Accuracy: 0,01 s

Time measurin

Zaporni sat

Pressure Sensor Model 138A05 and Signal Conditioner Model 482A21

Measurement range: 34 475 kPa
Sensitivity: 0,15 mV/kPa +- 15%,
Maximum Pressure: 344 750 kPa,
Resolution: 0,07 kPa,
Rise Time: <1,5 μs.

Measurement of shock wave in water.

Mjerac udarnog vala

Testing Chamber

Till 50g of explosive

Testing of detonators and small amounts of explosive

Ispitna komora

Universal Counter Agilent 53131A

Frequency range: 0,1 Hz to 225 MHz
Period range: 4,44 ns to 10 s
Time interval: 1 ns to 105 s

Calibration of electronic watches

Univerzalni brojac

Device for Determining the Detonation Temperature of Explosive Materials

Maximum temperature: 400 °C
Temperature increase: variable (from 1 °C/min to 20 °C/min)

Determining the detonation temperature of explosive materials

Uredaj za određivanje temperature paljenja eksplozivnih tvari

Shaking Plate

Frequency generator Siemens electronics

Vibration test of pyrotechnical articles, explosive materials and packaging

Treskalica

System for High-pressure measurement

Measurement range depends on usage of strain gauges

High-pressure measurement.

Mjerenje visokih tlakova

Mjerenje visokih tlakova 1

Microscope DINO-LITE Pro AM-413ZT

Magnification range: 20×~50×, 200×
Sensor type: CMOS
Resolution: 1,3 MPixel
USB 2.0
Program package: DinoCapture 2.0

Microscoping.

Mikroskopiranje

Microscope DINO-LITE Pro AM-4113T5X

Magnification range: 500×
Sensor type: CMOS
Resolution: 1,3 MPixel
USB 2.0

Microscoping.

Mikroskopiranje 1

Biological Microscope with Camera, BIM313T

Magnification range: 500×
Camera: 1,3 MPixel

Microscoping.

Mikroskopiranje 2 

Stabilized Power Supply Unit HMP2020

One output with (0 V– 32 V)/10 A and output with fixed voltage
5,5 V/5 A.

Power supply of loads or sensors/transducers that need regulated voltage or current for operation.

Stabilizirani izvor struje

Pressure Vessel s HUBA Controller for Hydrostatic Pressure

Pressure range: 0 bar – 40 bar.

Determination of resistance of electric and non-electric detonators, surface connectors and retarders for detonating cord to hydrostatic pressure.

Tlacna posuda

Instantel BlastMate Serija III

Four-channelled
Seismic channels × 3: 1024-16,384 samples/s/channel
Max. range: 254 mm/s
Min. resolution: 0,0159 mm/s
Acceleration: 0,01 – 30 g
Displacement: 0,00023-3,5 cm
Noise and air shock × 1: 1024-16,384 samples/s/channel
Range: 88-148 dB (linear & «C»), 50-110 dB («A»)
Resolution: 0,25 Pa (linear & «C»), 0,1 dB («A»)
Data analysis: program package Instantel BlastWare.

Measurements of accelerations, velocity, displacement, air-shock and noise.

Instantel BlastMate Serija

Instantel BlastMate Serija II DS-477

Four-channelled
Seismic channels × 3: 1024-16,384 samples/s/channel
Max. range: 254 mm/s
Min. resolution: 0,0159 mm/s
Acceleration and displacement: calculated by using existing curves
Noise and air shock × 1: 1024-16,384 samples/s/channel
Range: 88-148 dB (linear & «C»), 50-110 dB («A»)
Resolution: 0,25 Pa (linear & «C»), 0,1 dB («A»)
Data analysis: program package Instantel BlastWare.

Measurements of accelerations, velocity, displacement, air-shock and noise.

Instantel BlastMate Serija III

Instantel Minimate (2 devices)

Four-channelled
Seismic channels × 3: 1024-16,384 samples/s/channel
Max. range: 127 mm/s
Min. resolution: 0,125 mm/s
Acceleration and displacement: calculated by using existing curves
Noise and air shock × 1: 1024-16,384 samples/s/channel
Range: 100 dB to 142 dB (2 Pa to 250 Pa)
Resolution: 2,9x10-4 (0,5 Pa)
Data analysis: program package Instantel BlastWare.

Measurements of accelerations, velocity, displacement, air-shock and noise.

Instantel Minimate 

Instantel Minimate Plus (5 devices)

Four-channelled
Seismic channels × 3: 1024-16,384 samples/s/channel
Max. range: 254 mm/s
Min. resolution: 0,0159 mm/s
Acceleration: 0,01 – 30 g
Displacement: calculated by using existing curves
Noise and air shock × 1: 1024-16,384 samples/s/channel
Range: 88-148 dB (linear & «C»), 50-110 dB («A»)
Resolution: 0,25 Pa (linear & «C»), 0,1 dB («A»)
Data analysis: program package Instantel BlastWare.

Measurements of accelerations, velocity, displacement, air-shock and noise.

Instantel Minimate

Ultra Low Frequency Acceleration Meter, Wilcoxon Model 731A

Range: 0,5 g (4,90333 m/s2)
Sensitivity: 3,220 V/g (0,00033 V/mm/s2)
Frequency: 0,10 – 300 Hz (±10%) 0,05 – 500 Hz (±3dB)

Measurements of accelerations.

Wilcoxon Model

Acceleration Meter, PCB Piezotronics SVS Model 338B35

Range: 50 g (490,333 m/s2)
Sensitivity: 0,03226 V/g (0,0032862 V/m/s2)
Frequency: 1 – 3 kHz (±10%)

Measurements of accelerations.

Akcelerometar

Acceleration Meter, PCB Piezotronics SVS Model 338B34

Range: 500 g (490333 m/s2)
Sensitivity: 0,03226 V/g (0,0032862 V/m/s2)
Frequency: 1 – 3 kHz (±10%)

Measurements of accelerations.

Akcelerometar 1 

Standard Geophone Istantel Model 714A0301-three components (9 pieces)

Max. range: 254 mm/s
Min. resolution: 0,0159 mm/s
Sensitivity: 0,006344 V/mm/s
Acceleration and displacement: calculated by using the existing curves
Frequency: 2 Hz – 300 Hz

Triaxial Geophone for Vibration Monitoring.

Standarni geofon

Low Sensitive Geophone Istantel Model 714A8302-three components

Max. range: 254 mm/s
Min. resolution: 0,0159 mm/s
Sensitivity: 0,063369 V/mm/s
Acceleration and displacement: calculated by using the existing curves
Frequency: 1 Hz – 3 KHz

Triaxial Geophone for Vibration Monitoring.

niskoosjetljivi geofon

Borhole Geophone Istantel Model 714A3301-three components

Max. range: 254 mm/s
Min. resolution: 0,0159 mm/s
Frequency: 2 Hz – 250 Hz

Triaxial Geophone for Vibration Monitoring down the Hole..

niskoosjetljivi geofon

Borhole Geophone Istantel Model 714A8501-three components

Max. range: 254 mm/s
Min. resolution: 0,0159 mm/s
Frequency: 2 Hz – 250 Hz

Triaxial Geophone for Vibration Monitoring down the Hole.

Busotinski geofon

Hydrophone Instantel Model 714A5001 (2 pieces)

Max. range: 345 kPa
Sensitivity: 0,004662 V/kPa
Frequency: 1 Hz – 300 Hz

Sensor for measuring shock wave in water.

Hidrofon

Microphone Linear Instantel Model 714A0401 (6 pieces)

Max. range: 500 kPa
Sensitivity: 0,003223 V/Pa

Sensor for measuring shock wave in air.

Mikrofon 6

Microphone «A» Instantel Model 714A2001 (5 pieces)

Sensitivity: 0,0080565 V/dB

Sensor for measuring noise.

Mikrofon 5

White Mini-Seiz (2 instruments)

Four channels.
Seismic channels × 3: 1024-2048 samples/s/channel
Max. range: 254 mm/s
Min. resolution: 0,033 mm/s
Noise and air shock × 1: 1024-16,384 samples/s/channel
Range: 106 dB - 148 dB, 100 dB - 142 dB
Data analysis: program package White Data Analysis 4.0

Measurements of accelerations, velocity, displacement, air-shock and noise.

White

VODMate Instantel

Sensitivity: 8,435 Ohm/m ± 5%
Analysis: 163844 – 2097152 samples/s
Data Analysis: program package Instantel BlastWare

Measurements of detonation velocity down the holes.

Vodmate

Viewing screen for monitoring height and angle flight (2 pieces)

Height: above 30 m
Angle: 15° i 30°

Monitoring height and angle flight of pyrotechnical articles.

Zaslon

Linear Variable Differential Transformer LVDT (3 pieces)

Movement range: ± 12,5 mm

Measurements of linear displacements.

Linearno promjenjivo diferencijalni transformator

Non-Contact IR thermometer with laser target MODEL RO111

Measurement Range: -30 °C to +550 °C
Accuracy: ± 2 °C for range -30 °C to +100 °C,
± 2 % of reading for range +101 °C to +550 °C

Measurements of temperature from distance.

Beskontaktni IR termometar

Waterpool for Underwater Blasting

Volume: 1000 l

Underwater testing of explosive materials.

Bazen

Aggregate MOSA GE2500SR FAMILY

2,3 kW
2 × 16 A (230 V)

Electric power generator.

Agregat el energije

Teaching in the laboratory

Teaching in the laboratory (students' practical work) in 2016/2017

Course title

Mandatory or Elective course

Number of hours of practical work in lab

Number of students per group

Number of groups

Blasting 1

Mandatory

(2+2+2) × 15

(12+12+12)

3

Teaching in the laboratory (Students scientifice research)

 Teaching in the laboratory in 2016/2017 (Students scientifice research)

Name and surname of student

Thesis title

BSc thesis

Krešimir Grgurev

Detonation velocity of emulsion explosives with addition of recycled rubber

Ana Hrastov

Electrical voltage induced with shock wave from shock tube

Mihael Marek

Possibility of application of low-density explosives for cutting steel elements

Matej Medvidović

Detonation velocity of explosive mixtures with organic waste

Josip Peter

Static functioning tests of anti-hail rocets

Antonio Šandrk

Detonation velocity of explosive mixtures with addition of recycled rubber

Ennio Hadžić

Explosive mixtures with addition of recycled rubber

Petar Vranjković

Influence of detonation heat of initial device on velocity of detonation of anfo explosives

MSc thesis

Marsel Kolić

Optimization of the blasting parameters in order to obtain favorable rock mass fragmentation

Katija Šimunović

Theoretical parameters of detonation of low density explosives

Projects in the laboratory

Projects in the laboratory in 2016/2017 

Expert projects

Project drilling and blasting procedures for the excavation of the building pit of a residential-business facility „MOJ CENTAR“ ZADAR, Put Murvice

Blasting influence measuring study at the building pit of a residential-business facility „MOJ CENTAR“ in ZADAR,  04.01.2017.

Project drilling and blasting procedures for the excavation of the building pit of a shoping mall facility Interspar Rujevica

Project drilling and blasting procedures for the knocking down rocks on Hvar, II. phase, particle 1633 12/3 in place Podstine

Blasting influence measuring study from the knocking down rocks on Hvar, II. phase, particle 1633 12/3 in place Podstine

Expert opinion for the explosive storage facility No.2, Volujica, Bar harbour, Montenegro according to the Croatian regulations and the Regulations on Production and Storage Facilities for Explosive Materials, Fig. Montenegro No. 4.

Expert opinion for the explosive storage facility No.M3, Volujica, Bar harbour, Montenegro according to the Croatian regulations and the Regulations on Production and Storage Facilities for Explosive Materials, Fig. Montenegro No. 4.

Opinion on the possibility of increasing the capacity of explosive storage facility No.3, on location Nikšić-Budoš-mj. Dvorišta, according to the Croatian regulations and the Regulations on Production and Storage Facilities for Explosive Materials, Fig. Montenegro No. 4.

NAVIGATION