Nonel tunnel
General Description
Nonel tunnel is a non-electric initiation system intended for use in tunnel and underground blasting works. It consists of a series of NPED (i.e. Non-Primary Explosives Detonator) with suitable Length of Nonel tube. All detonators have individual delay. The strength of each detonator is that of a No.8 plain detonator.
Nonel tunnel detonators are best initiated by means of bunch connectors or detonating cord. A bunch connector consists of a loop of detonating cord incorporated in surface connector (usually zero delay). A bunch connector is designed for the reliable initiation of a maximum 20 Nonel-tubes.
Technical Characteristics
|
In-hole detonator |
|
|
Type: |
NPED |
|
Strength: |
No.8 |
|
Explosive content: |
1 gr. (PETN/RDX) |
|
Shell material: |
Aluminum |
|
Shell Diameter: |
7.5 mm |
|
Shell Length: |
60-93 mm, depending on the delay time and the composition |
|
Tube |
|
|
Type: |
Nonel tube 3L |
|
Diameter: |
3 mm |
- Application
- Packaging
- Storage
- Classification
-
The Nonel tunnel initiation system has been developed for tunnel and underground blasting operations. The delay times between successive intervals are long enough to enable rock to be broken and displaced properly from the tunnel face before subsequent holes detonate.
-
To be easily identified against other Nonel detonators as well as rock in poor lighting conditions, the Nonel tunnel detonators are fitted with red Nonel-tubes. Interval and delay times are given in the next table.
Period number
Delay time (ms)
Delay interval(ms)
0
max 10
-
1
100
75
2
200
100
3
300
100
4
400
100
5
500
100
6
600
100
7
700
100
8
800
100
9
900
100
10
1000
100
12
1200
200
14
1400
200
16
1600
200
18
1800
200
20
2000
200
25
2500
500
30
3000
500
35
3500
500
40
4000
500
45
4500
500
50
5000
500
55
5500
500
60
6000
500
65
6500
500
70
7000
500
Nonel tunnel
tube length(m)
packing Qty/box
4.0
100
5.0
100
6.0
100
8.0
80
10.0
60
Nonel Bunch Connectors
tube length (m)
packing Qty/box
3.6
100
4.8
90
6.0
80
7.8
70
9.0
60
10.2
50
-
Nonel detonators should be handled,stored and used according to the national laws and regulations. They are packed in bags for protection against moisture. Storage temperature below +50°C is highly recommended.
Provided that storage conditions are appropriate, it is recommended to use Nonel detonators within 12 months.
Product shelf life expansion can be verified after examined by the supplier.
-
Commercial Name: Nonel tunnel
Technical Name: Detonator assemblies, non-electric
UN-number: 0361,0500
Division/Compatibility Group: 1.4B, (1.4S at request)
Application
The Nonel tunnel initiation system has been developed for tunnel and underground blasting operations. The delay times between successive intervals are long enough to enable rock to be broken and displaced properly from the tunnel face before subsequent holes detonate.
Packaging
To be easily identified against other Nonel detonators as well as rock in poor lighting conditions, the Nonel tunnel detonators are fitted with red Nonel-tubes. Interval and delay times are given in the next table.
|
Period number |
Delay time (ms) |
Delay interval(ms) |
|
0 |
max 10 |
- |
|
1 |
100 |
75 |
|
2 |
200 |
100 |
|
3 |
300 |
100 |
|
4 |
400 |
100 |
|
5 |
500 |
100 |
|
6 |
600 |
100 |
|
7 |
700 |
100 |
|
8 |
800 |
100 |
|
9 |
900 |
100 |
|
10 |
1000 |
100 |
|
12 |
1200 |
200 |
|
14 |
1400 |
200 |
|
16 |
1600 |
200 |
|
18 |
1800 |
200 |
|
20 |
2000 |
200 |
|
25 |
2500 |
500 |
|
30 |
3000 |
500 |
|
35 |
3500 |
500 |
|
40 |
4000 |
500 |
|
45 |
4500 |
500 |
|
50 |
5000 |
500 |
|
55 |
5500 |
500 |
|
60 |
6000 |
500 |
|
65 |
6500 |
500 |
|
70 |
7000 |
500 |
|
Nonel tunnel |
|
|
tube length(m) |
packing Qty/box |
|
4.0 |
100 |
|
5.0 |
100 |
|
6.0 |
100 |
|
8.0 |
80 |
|
10.0 |
60 |
|
Nonel Bunch Connectors |
|
|
tube length (m) |
packing Qty/box |
|
3.6 |
100 |
|
4.8 |
90 |
|
6.0 |
80 |
|
7.8 |
70 |
|
9.0 |
60 |
|
10.2 |
50 |
Storage
Nonel detonators should be handled,stored and used according to the national laws and regulations. They are packed in bags for protection against moisture. Storage temperature below +50°C is highly recommended.
Provided that storage conditions are appropriate, it is recommended to use Nonel detonators within 12 months.
Product shelf life expansion can be verified after examined by the supplier.
Classification
Commercial Name: Nonel tunnel
Technical Name: Detonator assemblies, non-electric
UN-number: 0361,0500
Division/Compatibility Group: 1.4B, (1.4S at request)
