{"id":3668,"date":"2021-10-26T17:38:37","date_gmt":"2021-10-26T23:38:37","guid":{"rendered":"https:\/\/www.crpa-acrp-bulletin.ca\/?p=3668"},"modified":"2021-10-26T17:38:37","modified_gmt":"2021-10-26T23:38:37","slug":"contributions-de-dose-annuelle-des-niveaux-typiques-de-radon-a-linterieur-des-batiments-2e-partie","status":"publish","type":"post","link":"https:\/\/www.crpa-acrp-bulletin.ca\/fr\/2021\/10\/26\/contributions-de-dose-annuelle-des-niveaux-typiques-de-radon-a-linterieur-des-batiments-2e-partie\/","title":{"rendered":"Contributions de dose annuelle des niveaux typiques de radon \u00e0 l\u2019int\u00e9rieur des b\u00e2timents (2e<\/sup>\u00a0partie)"},"content":{"rendered":"

<\/a><\/p>\n

\"A<\/p>\n

The duty to protect all Canadian workers, regardless of their workplace<\/em><\/h2>\n

In \u201cAnnual Dose Contributions of Typical Indoor Radon Levels (Part 1),\u201d<\/a> we explored the contribution of radon gas to annual effective dose for three hypothetical Canadians living with different indoor radon levels.<\/p>\n

Our three examples included indoor radon levels of 100, 200, and 557 Bq\/m3<\/sup>. Our calculations found that, given the increased amount of time currently spent at home (an estimated 22 hours per day), inhaled radiation from radon resulted in annual effective doses of 2.67, 5.35, and 14.9 mSv\/year, respectively.<\/p>\n

Table 1:<\/strong> Estimated annual effective dose for three hypothetical Canadians<\/p>\n\n\n\n\n\n\n
<\/td>\nIndoor radon levels
\n(Bq\/m3<\/sup>)<\/td>\n		Annual effective dose
\n(mSv\/year)<\/td>\n<\/tr>\n
Person A<\/td>\n100<\/td>\n2.67<\/td>\n<\/tr>\n
Person B<\/td>\n200<\/td>\n5.35<\/td>\n<\/tr>\n
Person C<\/td>\n557<\/td>\n14.9<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

These doses well exceed the current estimate of 0.9 mSv\/year for the average Canadian. This was true even for Canadians living below the Canadian guideline<\/a> level of 200 Bq\/m3<\/sup>. Further, the overall effective dose from radon at indoor concentrations of 200 Bq\/m3<\/sup> or above was much higher than current estimates of background radiation levels of 1.8 mSv\/year.<\/p>\n

While these results may be eye-opening, the measurement and mitigation of radon in Canadian homes remains the responsibility of homeowners themselves. It is the choice of each homeowner whether to test their residence for radon, and whether to mitigate. In part 2 of this article, however, we move our focus to workplaces.<\/p>\n

When a home becomes a workplace, which guidelines apply?<\/h2>\n

The COVID-19 pandemic turned homes into workplaces for almost one in three Canadian workers<\/a>, and with the pandemic now well into its second year, many employers have expressed their intentions to keep workers working from home until at least the end of 2021. While it is impossible to predict the post-pandemic work landscape, it seems likely that an increased number of Canadians will continue working from home on a permanent basis.<\/p>\n

When a home becomes a workplace, which guidelines apply? The Canada Labour Code includes radon level limits and is set to be updated to reflect the most recent Canadian radon guideline level in the spring of 2022. The Canadian Guidelines for the Management of Naturally Occurring Radioactive Materials (NORM) include guidelines for indoor workplaces with respect to radon; however, they have no legal force except in Ontario, where the Ministry of Labour has now adopted a policy of reading the NORM guidelines into Ontario\u2019s Occupational Health and Safety Act<\/a>.<\/p>\n

The NORM guidelines take a simplified approach to estimating the dose from radon. The NORM recommendation is that each workplace be tested to establish the estimated annual average concentration of radon gas, and the NORM program classification then determined by consulting the following table:<\/p>\n

Table 2: <\/strong>NORM guidelines<\/p>\n\n\n\n\n\n\n
Average annual concentration
\n(Bq\/m3<\/sup>)<\/td>\n		NORM program classification<\/td>\n<\/tr>\n
800 to 3,000<\/td>\nRadiation protection management<\/td>\n<\/tr>\n
200 to 800<\/td>\nNORM management program<\/td>\n<\/tr>\n
Background to 200<\/td>\nUnrestricted<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Source: Canadian Guidelines for the Management of Naturally Occurring Radioactive Materials (NORM)<\/a><\/em>, Table 4.1: Radon and NORM Program Classifications, page 21.<\/p>\n

For workplaces that fall into the NORM management or radiation protection management categories by measuring above 200 Bq\/m3<\/sup>, the NORM guidelines recommend taking steps to reduce the radon levels to below 200 Bq\/m3<\/sup>. Given our discussion of radon levels in homes across Canada in part 1 of this article and the findings of recent community testing conducted by Take Action on Radon,<\/em> you can see that many homes in Canada would fall within NORM management levels, while others would require radiation protection management.<\/p>\n

Fortunately, there are well-established and highly effective radon mitigation solutions available for all Canadian homes, as well as a national directory of certified radon professionals whom employers and homeowners alike may consult for guidance.<\/p>\n

The COVID-19 pandemic has not only changed the working reality of many Canadians, but also highlighted the importance of good indoor air quality. Employers have a duty to protect the health and safety of their employees, and that duty extends to measuring the radon in their workplaces, wherever those workplaces may be.<\/p>\n

Has your workplace been tested for radon?<\/h2>\n

No matter what your workplace looks like, or where it\u2019s located, every workplace needs to be tested! For more information on radon, see Protect\u00a0Your Workplace from\u00a0Radon<\/a><\/em> on the CARST website.<\/p>\n

\n

R\u00e9sum\u00e9 : Contributions de dose annuelle des niveaux typiques de radon \u00e0 l\u2019int\u00e9rieur des b\u00e2timents (2e<\/sup>\u00a0partie)<\/h4>\n

Dans \u00ab\u00a0Contributions de dose annuelle des niveaux typiques de radon \u00e0 l\u2019int\u00e9rieur des b\u00e2timents (1\u00e8re<\/sup>\u00a0partie)\u00a0\u00bb<\/a>, Erin s\u2019est pench\u00e9e sur la contribution du radon dans la dose efficace annuelle pour trois Canadiens fictifs dans leur foyer. Dans la 2e<\/sup>\u00a0partie, elle s\u2019est pench\u00e9e sur l\u2019exposition au radon en milieu de travail.<\/p>\n

Pour pr\u00e8s d\u2019un travailleur canadien sur trois, le foyer est devenu un lieu de travail en raison de la pand\u00e9mie de COVID-19. Dans la 2e<\/sup>\u00a0partie, Erin se penche sur la responsabilit\u00e9 des employeurs de prot\u00e9ger la sant\u00e9 et la s\u00e9curit\u00e9 de leurs employ\u00e9s quand ils travaillent \u00e0 la maison. Selon elle, cette responsabilit\u00e9 va jusqu\u2019\u00e0 mesurer le radon dans leur milieu de travail, et ce, peu importe o\u00f9 il se situe.<\/p>\n<\/div>\n

 <\/p>\n

\n

\"ErinErin Curry<\/h2>\n

Erin Curry est ing\u00e9nieure m\u00e9canique et dirigeait auparavant sa propre entreprise d\u2019inspection de b\u00e2timents et de mesure du radon. Elle est pr\u00e9sentement directrice r\u00e9gionale de l\u2019Association canadienne des scientifiques et des technologues en radon (ACSTR) et chef de projet du programme \u00ab\u00a0Occupe-toi du radon\u00a0\u00bb. Pour soutenir les membres de l\u2019ACSTR, Erin apporte une richesse de connaissances et d\u2019exp\u00e9riences pratiques. Localis\u00e9e pr\u00e8s de Montr\u00e9al, au Qu\u00e9bec, Erin est la ressource francophone pour toutes les initiatives de l\u2019ACSTR.<\/p>\n<\/div>\n

 <\/p>\n

\n

Vous voulez lire d\u2019autres articles comme celui-ci ?<\/h2>\n

Le\u00a0Bulletin<\/em> de l\u2019Association canadienne de la radioprotection (ACRP) est une publication essentielle \u00e0 tout professionnel de la radioprotection du Canada. Son contenu \u00e9ditorial procure aux professionnels de la radioprotection les enseignements, l\u2019information, les conseils et les solutions utiles, tous n\u00e9cessaires pour demeurer \u00e0 l\u2019avant-garde de la profession.<\/p>\n

Abonnez-vous aujourd\u2019hui pour que nous vous envoyions un courriel chaque fois qu\u2019un nouveau num\u00e9ro est mis en ligne. Revisitez souvent le site entre chaque num\u00e9ro pour obtenir les mises \u00e0 jour et consulter de nouveaux articles.<\/p>\n

Ne ratez aucun num\u00e9ro. Abonnez-vous d\u00e8s aujourd\u2019hui !<\/p>\nAbonnez-vous<\/span><\/a>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

La responsabilit\u00e9 des employeurs de prot\u00e9ger la sant\u00e9 et la s\u00e9curit\u00e9 de leurs employ\u00e9s quand ils travaillent \u00e0 la maison.<\/p>\n","protected":false},"author":77,"featured_media":3581,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[29],"tags":[],"class_list":["post-3668","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-articles-fr"],"yoast_head":"\nContributions de dose annuelle des niveaux typiques de radon \u00e0 l\u2019int\u00e9rieur des b\u00e2timents (2e\u00a0partie) - CRPA-ACRP Bulletin<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.crpa-acrp-bulletin.ca\/fr\/2021\/10\/26\/contributions-de-dose-annuelle-des-niveaux-typiques-de-radon-a-linterieur-des-batiments-2e-partie\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Contributions de dose annuelle des niveaux typiques de radon \u00e0 l\u2019int\u00e9rieur des b\u00e2timents (2e\u00a0partie) - 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