2019 Dose Data from the Fixed Point Surveillance Network

The Fixed Point Surveillance (FPS) network monitors public radiation dose due to radioactive materials in the atmosphere. The FPS network is used primarily to measure the external dose from three noble gases in particular; Argon-41, Xenon-133 and Xenon-135, as well as the total combined external dose from all sources, measured as Total Air KERMA.

For all of the tables on this page, the following definitions apply:

nGy (nanoGray)

A Gray (Gy) is a standard unit of measurement for radiation dose, defined as 1 Joule of energy deposited per kilogram of matter. A nanoGray (nGy) is 1x10 -6 milliSieverts (mSv) and it is a much more common unit of measure for these types of very low doses.

KERMA (Kinetic Energy Released in Matter)

In this case the 'Total Air KERMA' refers to the radiation dose from all external gamma sources, not just from the three noble gases Argon-41, Xenon-133 and Xenon-135. This includes natural background radiation as well, such as from mineral deposits in the ground or radon gas in the air.

- (hyphen)

The system has a limit on the amount of low-level radiation it can reliably detect and use to calculate a monthly dose and the hyphens represent any data which falls below this detection limit. The minimum detectable dose for the three noble gases being monitored are ...

These detection limits are well below the acceptable public dose limit of
1 mSv/year as published by the Canadian Nuclear Safety Commission in their Radiation Protection Regulations.

x

The dose data for this month was not collected due to a problem with the equipment or data transfer.

Please click on a system name below to navigate directly to that system's data table.

The tables below show the most recent dose data available from the FPS network. Data is normally updated quarterly. (Last update: July 31th , 2019).

Gentilly system - 2019

Dose Data (nGy/month)
Station Nuclide JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
La Prad Argon-41 - - x x x x
Xenon-133 - - x x x x
Xenon-135 - - x x x x
Total Air
KERMA
13888 9782 x x x x            
Port Argon-41 x x x - - -  
Xenon-133 x x x - - -            
Xenon-135 x x x - - -            
Total Air
KERMA
x x x 7413 8267 8554            
Victoriaville Argon-41 - - - - - -            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
16401 12999 14334 18766 20309 19811            
Trois Rivières Argon-41 - - - - - -            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
7750 5712 6090 10704 13605 13453            
Québec City Argon-41 x - - - - -            
Xenon-133 x - - - - -            
Xenon-135 x - - - - -            
Total Air
KERMA
x 6112 6784 8014 8940 8893            

Bruce system - 2019

Dose Data (nGy/month)
Station Nuclide JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
Site Boundary Argon-41 - - 6 - - -            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
17070 11763 14088 16405 16600 16571            
Scott Point Argon-41 - - x - - -            
Xenon-133 - - x - - -            
Xenon-135 - - x - - -            
Total Air
KERMA
10927 8281 x 11282 11530 11469            
Kincardine Argon-41 x x x x - x            
Xenon-133 x x x x - x            
Xenon-135 x x x x - x            
Total Air
KERMA
x x x x 16167 x            
Inverhuron Argon-41 - - - - - -            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
13055 9805 11468 13235 13519 13565            
Port Elgin Argon-41 - - - - x x            
Xenon-133 - - - - x x            
Xenon-135 - - - - x x            
Total Air
KERMA
12197 9217 10464 12906 x x            
Infocentre Argon-41 - - - - - -            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
19340 16694 19309 20497 20927 20696            
Tiverton Argon-41 - - - - - -            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
14365 11991 13845 17540 17859 17734            
Shore Road Argon-41 - - - - - -            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
12074 8851 10578 12706 12925 12881            

Greater Toronto Area/Lake Ontario system - 2019

Dose Data (nGy/month)
Station Nuclide JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
Scarborough Argon-41 - - - - 12 12            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
11942 9840 11328 11529 11917 11608            
Bowmanville Argon-41 - - - - - -            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
16088 12395 15245 20948 27371 26684            
Resources Road Argon-41 - - - - - -            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
8980 7038 8292 8739 8993 8968            
St. Clair Avenue East Argon-41 - - - x x x            
Xenon-133 - - - x x x            
Xenon-135 - - - x x x            
Total Air
KERMA
12253 9661 10328 x x x            
Pickering Argon-41 11 6 18 20 48 58            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
15470 12027 14267 15509 16013 15756            
Oshawa Argon-41 - - - - - -            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
13264 11078 12783 13201 13613 13389            
Markham Argon-41 - - 6 14 8 7            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
15539 12507 14482 15481 15980 15818            
Ajax Argon-41 67 64 36 24 25 30            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
20390 14227 16844 20338 20854 20573            
Port Hope Argon-41 - - - - - -            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
18892 16439 18975 19275 20218 19511            
Hamilton Argon-41 372 226 270 224 253 282            
Xenon-133 6 7 - - 5 -            
Xenon-135 - - - 17 3 -            
Total Air
KERMA
22216 19404 21870 22242 22678 21451            
Kingston ON Argon-41 - - - - - -            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
12872 10869 12339 12365 12931 12576            
St. Catharines Argon-41 - x x x - -            
Xenon-133 - x x x - -            
Xenon-135 - x x x - -            
Total Air
KERMA
10617 x x x 10653 10400            

Darlington Perimeter system - 2019

Dose Data (nGy/month)
Station Nuclide JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
Blue Circle Cement Argon-41 - - - - - -            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
13676 9870 11900 13963 14459 14229            
Bowmanville Argon-41 - - - - - -            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
16247 11785 14071 16233 17297 17175            
South Service Road East Argon-41 - - - - - -            
Xenon-133 - - - 6 - -            
Xenon-135 - - - - - -            
Total Air
KERMA
17206 12288 15101 17959 18318 18122            
Solina Road Argon-41 - - - - - -            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
15498 9982 12192 15818 16370 16130            
Osborne Road Argon-41 - - - - - -            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
13412 8937 11637 14012 14502 14296            
Courtice Treatment Plant Argon-41 - - - - - -            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
16454 12965 15782 16506 17039 16758            
Holt Road Argon-41 - - - - - -            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
15735 12358 15802 16495 16982 17118            

Pickering Perimeter system - 2019

Dose Data (nGy/month)
Station Nuclide JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
Montgomery Road Argon-41 484 405 293 280 457 597            
Xenon-133 15 14 13 13 23 22            
Xenon-135 - - - - - -            
Total Air
KERMA
14616 9831 11352 14640 15316 15365            
Kinsmen Park Argon-41 142 68 177 279 398 498            
Xenon-133 7 - 7 8 12 13            
Xenon-135 - - - - - -            
Total Air
KERMA
15255 12419 13625 14941 15238 15104            
Liverpool Road Argon-41 193 32 119 154 201 248            
Xenon-133 6 - - 5 6 6            
Xenon-135 - - - - - -            
Total Air
KERMA
14940 8848 11927 14212 13778 13188            
East Boundary Argon-41 469 383 218 156 219 196            
Xenon-133 18 10 10 6 10 6            
Xenon-135 - - - - - -            
Total Air
KERMA
19639 13769 16454 19848 20504 20193            
Central Maintenance Argon-41 151 189 383 609 690 859            
Xenon-133 5 - 9 19 22 25            
Xenon-135 - - - - - -            
Total Air
KERMA
10984 7442 9378 11588 11933 11951            
Beachpoint Promenade Argon-41 87 76 80 224 212 225            
Xenon-133 - - - 7 6 6            
Xenon-135 - - - - - -            
Total Air
KERMA
10763 6103 8057 11091 10234 8498            
CMS Storage Yard Argon-41 306 435 485 503 854 1171            
Xenon-133 12 8 12 16 29 34            
Xenon-135 - - - - - -            
Total Air
KERMA
10017 6946 8133 9006 9610 10072            
Alex Robertson Road Argon-41 84 55 140 173 352 321            
Xenon-133 - - - 7 12 9            
Xenon-135 - - - - - -            
Total Air
KERMA
18272 10716 12783 19081 19589 19265            

Ottawa Valley system - 2019

Dose Data (nGy/month)
Station Nuclide JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
Chapeau Argon-41 - - - - - -            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
8849 10038 16435 16096 18567 20203            
Chalk River Argon-41 x x x x x x            
Xenon-133 x x x x x x            
Xenon-135 x x x x x x            
Total Air
KERMA
x x x x x x            
Deep River Argon-41 - - - - - -            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
22626 18227 19680 23207 28312 28233            
Ottawa Argon-41 - - - - - -            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
9046 6117 8141 10818 11168 10988            
Petawawa Argon-41 - - - - - -            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
14963 10288 12406 20012 23923 23535            
Sheenboro Argon-41 - - - - - -            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
16435 11622 13853 19971 24548 24113            
Westmeath Argon-41 - - - - - -            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
16381 11546 12485 17139 22615 22441            

Regional system - 2019

Dose Data (nGy/month)
Station Nuclide JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
Amherstburg Argon-41 - - - - - -            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
15779 14276 15884 15578 15739 15787            
Vancouver Argon-41 - - - - 33 32            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
14074 12787 14199 13176 14016 13720            
Yellowknife Argon-41 - - - - - -            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
17831 14237 15798 18377 25346 26584            
Regina Argon-41 - - - - - -            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
17261 15156 15989 16995 17601 17827            
Calgary Argon-41 - - - - - -            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
13587 11988 12755 12486 12980 12978            
Winnipeg Argon-41 - - - - - -            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
13258 11675 12953 13258 13906 13952            
Thunder Bay Argon-41 - - - - - -            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
14027 12422 14593 14948 15439 15343            
Montréal Argon-41 - - - - - -            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
12547 10439 12109 12916 13219 12805            
Charlottetown Argon-41 - - - - - -            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
14535 13139 14407 15441 16004 15688            
St. John's Argon-41 - - - - - -            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
18615 17681 19220 19690 20525 19950            
Whitehorse Argon-41 - - - - - -            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
25564 21472 24021 26209 27665 27265            
Iqaluit Argon-41 - - - - - -            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
16575 14139 14923 12790 20511 30868            
Resolute Argon-41 x - - x - -            
Xenon-133 x - - x - -            
Xenon-135 x - - x - -            
Total Air
KERMA
x 12078 13165 x 12990 14896            
Haida Gwaii Argon-41 - - - - - -            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
16410 14481 15992 15288 17094 15815            
Saskatoon Argon-41 - - - - - -            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
23477 20148 21867 21793 22673 22432            
Kelowna Argon-41 - - - - - -            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
32342 28615 31078 30990 33124 31648            
Fredericton Argon-41 - - - - - -            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
32565 28223 31475 35019 37335 36288            
Edmonton Argon-41 - - - - - -            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
17604 15199 16764 17382 18254 18059            

Point Lepreau system - 2019

Dose Data (nGy/month)
Station Nuclide JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
Lighthouse Argon-41 - - - - - -            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
22581 20761 23567 23259 25236 24605            
Digby Argon-41 - - - - - -            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
36079 33412 36574 34503 35693 34716            
Dipper Harbour Argon-41 - - - - - -            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
24728 21561 24611 24524 28837 28422            
Emergency Centre Argon-41 - - - - - -            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
32463 24474 25551 28965 43938 42921            
Saint John Argon-41 - - - - - -            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
23787 21638 23485 23078 23907 23156            
Welch Cove Argon-41 - - - - - -            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
16035 14388 15745 15641 18096 17912            
Kingston NS Argon-41 - - - - - -            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
17652 16887 17778 18069 18731 18351            

Vancouver Island system - 2019

Dose Data (nGy/month)
Station Nuclide JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
Saanich Argon-41 - - - - - x            
Xenon-133 - - - - - x            
Xenon-135 - - - - - x            
Total Air
KERMA
12698 11252 12662 12437 13207 x            
Metchosin Argon-41 - - - - - -            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
18383 16496 18208 18080 18989 18531            
Victoria Argon-41 - - - - - -            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
7973 7061 7679 7424 7782 7342            
Nanaimo Argon-41 - - - - - -            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
13553 11979 13446 11074 12145 11863            
Sidney Argon-41 - - - x x x            
Xenon-133 - - - x x x            
Xenon-135 - - - x x x            
Total Air
KERMA
12132 10457 11651 x x x            

Halifax system- 2019

Dose Data (nGy/month)
Station Nuclide JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
West Street Argon-41 - - - - - -            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
25402 23597 25550 25022 26149 25426            
Dartmouth Argon-41 - - - - - -            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
20537 19479 20970 20642 21621 21063            
Cole Harbour Road Argon-41 - - - - - -            
Xenon-133 - - - - - -            
Xenon-135 - - - - - -            
Total Air
KERMA
20565 19481 21240 20717 21747 21179            
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