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: November 5th, 2019).

Gentilly system - 2019

Dose Data (nGy/month)
Station Nuclide JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
La Prade Argon-41 - - x x x x x x x      
Xenon-133 - - x x x x x x x      
Xenon-135 - - x x x x x x x      
Total Air
KERMA
13888 9782 x x x 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 9331 9739 9569      
Victoriaville Argon-41 - - - - - - - - -      
Xenon-133 - - - - - - - - -      
Xenon-135 - - - - - - - - -      
Total Air
KERMA

16401

12999 14334 18766 20309 19811 20777 21260 20650      
Trois Rivières Argon-41 - - - - - - - - -      
Xenon-133 - - - - - - - - -      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
7750

5712

6090 10704 13605 13453 14351 14655 14277      
Québec City Argon-41 x - - - - - - - -      
Xenon-133 x - - - - - - - -      
Xenon-135 x - - - - - - - -      
Total Air
KERMA
x 6112 6784 8014 8940 8893 9234 9696 9620      

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 18002 18361 18205      
Scott Point Argon-41 - - x - - - - - -      
Xenon-133 - - x - - - - - -      
Xenon-135 - - x - - - - - -      
Total Air
KERMA
10927 8281 x 11282 11530 11469 12268 12846 13185      
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 14160 14477 14427      
Inverhuron Argon-41 - - - - - - - - -      
Xenon-133 - - - - - - - - -      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
13055 9805 11468 13235 13519 13565 14318 14517 14670      
Port Elgin Argon-41 - - - - x x x x x      
Xenon-133 - - - - x x x x x      
Xenon-135 - - - - x x x x x      
Total Air
KERMA
12197 9217 10464 12906 x x x x x      
Infocentre Argon-41 - - - - - - - - -      
Xenon-133 - - - - - - - - -      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
19340 16694 19309 20497 20927 20696 22585 23534 23131      
Tiverton Argon-41 - - - - - - - - -      
Xenon-133 - - - - - - - - -      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
14365 11991 13845 17540 17859 17734 19000 19275 19046      
Shore Road Argon-41 - - - - - - - - -      
Xenon-133 - - - - - - - - -      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
12074 8851 10578 12706 12925 12881 13716 14186 14536      

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 12372 12657 12430      
Bowmanville Argon-41 - - - - - - - - -      
Xenon-133 - - - - - - - - -      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
16088 12395 15245 20948 27371 26684 28188 28375 27555      
Resources Road Argon-41 - - - - - - - - -      
Xenon-133 - - - - - - - - -      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
8980 7038 8292 8739 8993 8968 9732 9944 9856      
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 12714 13042 12728      
Pickering Argon-41 11 6 18 20 48 58 27 39 11      
Xenon-133 - - - - - - - - -      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
15470 12027 14267 15509 16013 15756 16966 17396 16830      
Oshawa Argon-41 - - - - - - - - -      
Xenon-133 - - - - - - - - -      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
13264 11078 12783 13201 13613 13389 14352 14518 14104      
Markham Argon-41 - - 6 14 8 7 - - -      
Xenon-133 - - - - - - - - -      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
15539 12507 14482 15481 15980 15818 16914 17236 16811      
Ajax Argon-41 67 64 36 24 25 30 42 32 27      
Xenon-133 - - - - - - - - -      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
20390 14227 16844 20338 20854 20573 23219 24574 23286      
Port Hope Argon-41 - - - - - - - - -      
Xenon-133 - - - - - - - - -      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
18892 16439 18975 19275 20218 19511 20800 20862 19688      
Hamilton Argon-41 372 226 270 224 253 282 594 423 412      
Xenon-133 6 7 - - 5 - 6 4 7      
Xenon-135 - - - 17 3 - - - -      
Total Air
KERMA
22216 19404 21870 22242 22678 21451 23561 23398 22488      
Kingston ON Argon-41 - - - - - - - - -      
Xenon-133 - - - - - - - - -      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
12872 10869 12339 12365 12931 12576 13293 13730 13435      
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 11087 11473 11209      

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 15432 15470 15107      
Bowmanville Argon-41 - - - - - - - - -      
Xenon-133 - - - - - - - - -      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
16247 11785 14071 16233 17297 17175 18992 18954 18686      
South Service Road East Argon-41 - - - - - - - - -      
Xenon-133 - - - 6 - - - - -      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
17206 12288 15101 17959 18318 18122 19668 19919 19356      
Solina Road Argon-41 - - - - - - - - -      
Xenon-133 - - - - - - - - -      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
15498 9982 12192 15818 16370 16130 17488 17712 17336      
Osborne Road Argon-41 - - - - - - - - -      
Xenon-133 - - - - - - - - -      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
13412 8937 11637 14012 14502 14296 15319 15527 15164      
Courtice Treatment Plant Argon-41 - - - - - - - - -      
Xenon-133 - - - - - - - - -      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
16454 12965 15782 16506 17039 16758 18288 18371 17906      
Holt Road Argon-41 - - - - - - - - -      
Xenon-133 - - - - - - - - -      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
15735 12358 15802 16495 16982 17118 18937 18970 18371      

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-41 484 405 293 280 457 597 790 337 170      
Xenon-133 15 14 13 13 23 22 24 10 5      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
14616 9831 11352 14640 15316 15365 17367 18015 17070      
Kinsmen Park Argon-41 142 68 177 279 398 498 384 478 173      
Xenon-133 7 - 7 8 12 13 10 13 -      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
15255 12419 13625 14941 15238 15104 16868 17802 16888      
Liverpool Road Argon-41 193 32 119 154 201 248 170 200 75      
Xenon-133 6 - - 5 6 6 4 5 -      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
14940 8848 11927 14212 13778 13188 14617 15603 15579      
East Boundary Argon-41 469 383 218 156 219 196 267 185 114      
Xenon-133 18 10 10 6 10 6 8 5 -      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
19639 13769 16454 19848 20504 20193 22033 22607 21634      
Central Maintenance Argon-41 151 189 383 609 690 859 913 591 178      
Xenon-133 5 - 9 19 22 25 29 18 5      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
10984 7442 9378 11588 11933 11951 13061 13295 12448      
Beachpoint Promenade Argon-41 87 76 80 224 212 225 115 136 99      
Xenon-133 - - - 7 6 6 - - -      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
10763 6103 8057 11091 10234 8498 9481 10795 11281      
CMS Storage Yard Argon-41 306 435 485 503 854 1171 1340 664 235      
Xenon-133 12 8 12 16 29 34 42 20 6      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
10017 6946 8133 9006 9610 10072 12095 12118 11379      
Alex Robertson Road Argon-41 84 55 140 173 352 321 257 477 112      
Xenon-133 - - - 7 12 9 7 15 -      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
18272 10716 12783 19081 19589 19265 21491 22911 21744      

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 21910 23167 22252      
Chalk River Argon-41 x x x x x x x x -      
Xenon-133 x x x x x x x x -      
Xenon-135 x x x x x x x x -      
Total Air
KERMA
x x x x x x x x 32650      
Deep River Argon-41 - - - - - - - - -      
Xenon-133 - - - - - - - - -      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
22626 18227 19680 23207 28312 28233 30028 30816 29871      
Ottawa Argon-41 - - - - - - - - -      
Xenon-133 - - - - - - - - -      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
9046 6117 8141 10818 11168 10988 11979 14073 11587      
Petawawa Argon-41 - - - - - - - - -      
Xenon-133 - - - - - - - - -      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
14963 10288 12406 20012 23923 23535 24761 25061 24438      
Sheenboro Argon-41 - - - - - - - - -      
Xenon-133 - - - - - - - - -      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
16435 11622 13853 19971 24548 24113 25476 26233 25331      
Westmeath Argon-41 - - - - - - - - -      
Xenon-133 - - - - - - - - -      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
16381 11546 12485 17139 22615 22441 24185 25393 24628      

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 17284 17904 17589      
Vancouver Argon-41 - - - - 33 32 55 46 23      
Xenon-133 - - - - - - - - -      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
14074 12787 14199 13176 14016 13720 14418 14415 13771      
Yellowknife Argon-41 - - - - - - - - -      
Xenon-133 - - - - - - - - -      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
17831 14237 15798 18377 25346 26584 28214 27857 26974      
Regina Argon-41 - - - - - - - - -      
Xenon-133 - - - - - - - - -      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
17261 15156 15989 16995 17601 17827 18537 18908 18961      
Calgary Argon-41 - - - - - - - - -      
Xenon-133 - - - - - - - - -      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
13587 11988 12755 12486 12980 12978 13386 13701 13214      
Winnipeg Argon-41 - - - - - - - - -      
Xenon-133 - - - - - - - - -      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
13258 11675 12953 13258 13906 13952 14972 15189 14845      
Thunder Bay Argon-41 - - - - - - - - -      
Xenon-133 - - - - - - - - -      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
14027 12422 14593 14948 15439 15343 16440 16603 16187      
Montréal Argon-41 - - - - - - - - -      
Xenon-133 - - - - - - - - -      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
12547 10439 12109 12916 13219 12805 13410 13659 13411      
Charlottetown Argon-41 - - - - - - - - -      
Xenon-133 - - - - - - - - -      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
14535 13139 14407 15441 16004 15688 16491 16739 16080      
St. John's Argon-41 - - - - - - - - -      
Xenon-133 - - - - - - - - -      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
18615 17681 19220 19690 20525 19950 20803 20896 20264      
Whitehorse Argon-41 - - - - - - - - -      
Xenon-133 - - - - - - - - -      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
25564 21472 24021 26209 27665 27265 28488 28665 27872      
Iqaluit Argon-41 - - - - - - - - -      
Xenon-133 - - - - - - - - -      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
16575 14139 14923 12790 20511 30868 34300 34947 30839      
Resolute Argon-41 x - - x - - - x -      
Xenon-133 x - - x - - - x -      
Xenon-135 x - - x - - - x -      
Total Air
KERMA
x 12078 13165 x 12990 14896 19162 x 16130      
Haida Gwaii Argon-41 - - - - - - - - -      
Xenon-133 - - - - - - - - -      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
16410 14481 15992 15288 17094 15815 17188 16804 15461      
Saskatoon Argon-41 - - - - - - - - -      
Xenon-133 - - - - - - - - -      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
23477 20148 21867 21793 22673 22432 23355 23380 23079      
Kelowna Argon-41 - - - - - - - - -      
Xenon-133 - - - - - - - - -      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
32342 28615 31078 30990 33124 31648 32921 33491 32216      
Fredericton Argon-41 - - - - - - - - -      
Xenon-133 - - - - - - - - -      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
32565 28223 31475 35019 37335 36288 37737 38019 36582      
Edmonton Argon-41 - - - - - - - - -      
Xenon-133 - - - - - - - - -      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
17604 15199 16764 17382 18254 18059 18664 18859 18429      

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 25637 26543 25221      
Digby Argon-41 - - - - - - - - -      
Xenon-133 - - - - - - - - -      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
36079 33412 36574 34503 35693 34716 35866 36062 34849      
Dipper Harbour Argon-41 - - - - - - 7 - x      
Xenon-133 - - - - - - - - x      
Xenon-135 - - - - - - - - x      
Total Air
KERMA
24728 21561 24611 24524 28837 28422 29137 29673 x      
Emergency Centre Argon-41 - - - - - - - - x      
Xenon-133 - - - - - - - - x      
Xenon-135 - - - - - - - - x      
Total Air
KERMA
32463 24474 25551 28965 43938 42921 44679 45097 x      
Saint John Argon-41 - - - - - - - - -      
Xenon-133 - - - - - - - - -      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
23787 21638 23485 23078 23907 23156 24059 24145 23420      
Welch Cove Argon-41 - - - - - - - - -      
Xenon-133 - - - - - - - - -      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
16035 14388 15745 15641 18096 17912 18907 19704 18746      
Kingston NS Argon-41 - - - - - - - - -      
Xenon-133 - - - - - - - - -      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
17652 16887 17778 18069 18731 18351 19062 19129 18406      

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 x x x      
Xenon-133 - - - - - x x x x      
Xenon-135 - - - - - x x x x      
Total Air
KERMA
12698 11252 12662 12437 13207 x x x x      
Metchosin Argon-41 - - - - - - - - -      
Xenon-133 - - - - - - - - -      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
18383 16496 18208 18080 18989 18531 19339 19535 18800      
Victoria Argon-41 - - - - - - - - -      
Xenon-133 - - - - - - - - -      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
7973 7061 7679 7424 7782 7342 7643 7762 7593      
Nanaimo Argon-41 - - - - - - - - -      
Xenon-133 - - - - - - - - -      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
13553 11979 13446 11074 12145 11863 12298 12652 11937      
Sidney 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
12132 10457 11651 x x x 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 26199 26369 25493      
Dartmouth Argon-41 - - - - - - - - -      
Xenon-133 - - - - - - - - -      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
20537 19479 20970 20642 21621 21063 22164 22551 21471      
Cole Harbour Road Argon-41 - - - - - - - - -      
Xenon-133 - - - - - - - - -      
Xenon-135 - - - - - - - - -      
Total Air
KERMA
20565 19481 21240 20717 21747 21179 22543 23047 21962      
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