Acts and Regulations

91-191 - General

Section 168
Disposition versions

Full text
Electric initiation of blasting and distance from transmitter
168An employer and a blaster shall each ensure that electric initiation of blasting is not carried out at a distance from any transmitter less than the minimum distances shown in the following tables:
MINIMUM DISTANCES FROM COMMERCIAL
AM BROADCAST TRANSMITTERS
(0.535 to 1.705 MHz)
TRANSMITTER
POWER (1)
(Watts)
MINIMUM
DISTANCE
(Metres)
Up to 4,000
245
  4,001 - 5,000  
275
  5,001 - 10,000
395
10,001 - 25,000
610
25,001 - 50,000
885
  50,001 - 100,000
1,250
(1)Power delivered to antenna.
MINIMUM DISTANCES FROM TRANSMITTERS
UP TO 50 MHz
(excluding Commercial AM Broadcast
Transmitters)
 
CALCULATED FOR A SPECIFIC LOOP
PICKUP CONFIGURATION
TRANSMITTER
POWER (1)
(Watts)
MINIMUM
DISTANCE
(Metres)
Up to 100
245
     101 - 500       
520
     501 - 1,000    
760
  1,001 - 5,000    
5,185
  5,001 - 50,000  
1,680
50,001 - 500,000
16,770
(1)Power delivered to antenna.
MINIMUM DISTANCES FROM MOBILE TRANSMITTERS
INCLUDING AMATEUR AND CITIZEN’S BAND
TRANSMISSION FREQUENCY IN MHz
TRANSMITTER
POWER
(Watts)
MF
1.6-3.4
(Metres)
HF
28-29.7
(Metres)
VHF
35-36
42-44
50-54
(Metres)
VHF
144-148
150.8-161.6
(Metres)
UHF
450-470
(Metres)
        0 - 5        
  10
  20
  20
  6
  3
        6 - 10      
  15
  30
  25
  9
  6
      11 - 30      
  20
  55
  45
  16
  10
      31 - 50      
  25
  70
  55
  21
  12
      51 - 60      
  30
  75
  60
  23
  13
      61 - 100    
  35
100
  80
  30
  18
    101 - 180    
  50
130
110
  40
  25
    181 - 250    
  60
150
125
  50
  30
    251 - 350    
  70
180
150
  60
  35
    351 - 500    
  85
220
180
  70
  40
    501 - 600    
  90
240
195
  75
  45
    601 - 1000  
125
310
250
  95
  55
1001 - 1500  
135
345
280
110
  65
1501 - 10000
380
975
795
305
175
 
 
MINIMUM DISTANCES FROM CITIZEN’S
BAND CLASS D TRANSMITTERS
(26.96 - 27.41 MHz)
TYPE
MINIMUM
DISTANCE
(Metres)
 
Double Sideband (hand-held)
(4 watts max.)
1.5
 
Double Sideband (vehicle-mounted)
(4 watts max.)
20.0
 
Side Sideband (hand-held)
(12 watts peak)
6.0
 
Side Sideband (vehicle-mounted)
(12 watts peak)
34.0
 
MINIMUM DISTANCES FROM VHF TV
AND FM BROADCASTING
TRANSMITTERS
EFFECTIVE
RADIATED
POWER
(Watts)
CHANNELS 2 to 6 (Metres)
CHANNELS 7 to 13 (Metres)
FM RADIO (Metres)
Up to 1,000
305
185
245
 1,001 - 10,000
550
305
430
 10,001 - 100,000
980
580
795
100,001 - 325,000
1,315
765
1,040
325,001 - 1,000,000
1,770
915
1,405
 
MINIMUM DISTANCES FROM
UHF TV TRANSMITTERS
EFFECTIVE RADIATED
POWER
(Watts)
MINIMUM
DISTANCE
(Metres)
Up to 10,000
185
   10,001 - 1,000,000
610
1,000,001 - 5,000,000 
915
  5,000,001 - 100,000,000
1,830
 
MINIMUM DISTANCES FROM MARITIME
RADIONAVIGATIONAL RADAR
TYPE OF VESSEL
EFFECTIVE
RADIATED
POWER
(Watts)
MINIMUM
DISTANCE
(Metres)
Small Pleasure Craft
Up to 500 (1)
10
 
Harbour/River Craft
     501 - 5,000 (1)
15
 
Large Commercial Ships
     5,001 - 50,000 (2)
95
(1)3 cm (9000 MHz) frequency
(2)3 cm (9000 MHz) frequency10 cm (3000 MHz) frequency
NOTE: Department of National Defence and Coast Guard operate at a much higher frequency (200,000,000 watts)
93-8; 97-121
Electric initiation of blasting and distance from transmitter
168An employer and a blaster shall each ensure that electric initiation of blasting is not carried out at a distance from any transmitter less than the minimum distances shown in the following tables:
MINIMUM DISTANCES FROM COMMERCIAL
AM BROADCAST TRANSMITTERS
(0.535 to 1.705 MHz)
TRANSMITTER
POWER (1)
(Watts)
MINIMUM
DISTANCE
(Metres)
Up to 4,000
245
  4,001 - 5,000  
275
  5,001 - 10,000
395
10,001 - 25,000
610
25,001 - 50,000
885
  50,001 - 100,000
1,250
(1)Power delivered to antenna.
MINIMUM DISTANCES FROM TRANSMITTERS
UP TO 50 MHz
(excluding Commercial AM Broadcast
Transmitters)
 
CALCULATED FOR A SPECIFIC LOOP
PICKUP CONFIGURATION
TRANSMITTER
POWER (1)
(Watts)
MINIMUM
DISTANCE
(Metres)
Up to 100
245
     101 - 500       
520
     501 - 1,000    
760
  1,001 - 5,000    
5,185
  5,001 - 50,000  
1,680
50,001 - 500,000
16,770
(1)Power delivered to antenna.
MINIMUM DISTANCES FROM MOBILE TRANSMITTERS
INCLUDING AMATEUR AND CITIZEN’S BAND
TRANSMISSION FREQUENCY IN MHz
TRANSMITTER
POWER
(Watts)
MF
1.6-3.4
(Metres)
HF
28-29.7
(Metres)
VHF
35-36
42-44
50-54
(Metres)
VHF
144-148
150.8-161.6
(Metres)
UHF
450-470
(Metres)
        0 - 5        
  10
  20
  20
  6
  3
        6 - 10      
  15
  30
  25
  9
  6
      11 - 30      
  20
  55
  45
  16
  10
      31 - 50      
  25
  70
  55
  21
  12
      51 - 60      
  30
  75
  60
  23
  13
      61 - 100    
  35
100
  80
  30
  18
    101 - 180    
  50
130
110
  40
  25
    181 - 250    
  60
150
125
  50
  30
    251 - 350    
  70
180
150
  60
  35
    351 - 500    
  85
220
180
  70
  40
    501 - 600    
  90
240
195
  75
  45
    601 - 1000  
125
310
250
  95
  55
1001 - 1500  
135
345
280
110
  65
1501 - 10000
380
975
795
305
175
 
 
MINIMUM DISTANCES FROM CITIZEN’S
BAND CLASS D TRANSMITTERS
(26.96 - 27.41 MHz)
TYPE
MINIMUM
DISTANCE
(Metres)
 
Double Sideband (hand-held)
(4 watts max.)
1.5
 
Double Sideband (vehicle-mounted)
(4 watts max.)
20.0
 
Side Sideband (hand-held)
(12 watts peak)
6.0
 
Side Sideband (vehicle-mounted)
(12 watts peak)
34.0
 
MINIMUM DISTANCES FROM VHF TV
AND FM BROADCASTING
TRANSMITTERS
EFFECTIVE
RADIATED
POWER
(Watts)
CHANNELS 2 to 6 (Metres)
CHANNELS 7 to 13 (Metres)
FM RADIO (Metres)
Up to 1,000
305
185
245
 1,001 - 10,000
550
305
430
 10,001 - 100,000
980
580
795
100,001 - 325,000
1,315
765
1,040
325,001 - 1,000,000
1,770
915
1,405
 
MINIMUM DISTANCES FROM
UHF TV TRANSMITTERS
EFFECTIVE RADIATED
POWER
(Watts)
MINIMUM
DISTANCE
(Metres)
Up to 10,000
185
   10,001 - 1,000,000
610
1,000,001 - 5,000,000 
915
  5,000,001 - 100,000,000
1,830
 
MINIMUM DISTANCES FROM MARITIME
RADIONAVIGATIONAL RADAR
TYPE OF VESSEL
EFFECTIVE
RADIATED
POWER
(Watts)
MINIMUM
DISTANCE
(Metres)
Small Pleasure Craft
Up to 500 (1)
10
 
Harbour/River Craft
     501 - 5,000 (1)
15
 
Large Commercial Ships
     5,001 - 50,000 (2)
95
(1)3 cm (9000 MHz) frequency
(2)3 cm (9000 MHz) frequency10 cm (3000 MHz) frequency
NOTE: Department of National Defence and Coast Guard operate at a much higher frequency (200,000,000 watts)
93-8; 97-121