{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,7]],"date-time":"2026-09-07T14:34:59Z","timestamp":1788791699654,"version":"build-2803163510"},"reference-count":25,"publisher":"Oxford University Press (OUP)","issue":"9","license":[{"start":{"date-parts":[[2021,7,6]],"date-time":"2021-07-06T00:00:00Z","timestamp":1625529600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100003128","name":"Finnish Work Environment Fund","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100003128","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Finnish Institute of Occupational Health"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2021,11,9]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:p>The aim of the study was to find out good practices for effective air distribution inside a complex shaped asbestos enclosure and for control of pressure differences between the enclosure and the surroundings. In addition, sufficient pressure difference for asbestos containment was tested. The effect of air distribution was studied in laboratory conditions by constructing an L-shaped asbestos enclosure and connecting it to a negative pressure unit. The efficiency of six different ventilation configurations was compared using a tracer decay method and the local air change indexes as the performance indicator. The sufficient negative pressure for containment was assessed by simulating person traffic to and from the enclosure and recording the pressure difference continuously. The effect of a pressure controller unit in maintaining the target pressure difference was also tested by simulating filter loadings of the negative pressure unit causing changes in the air flow rate. The results showed that high nominal air change rates alone do not guarantee good air distribution. Effective air distribution within an asbestos enclosure can be arranged by locating additional air supply openings far away from the air exhaustion point, using recirculation air with a pressure controller, or extending the exhaust location to the poorly ventilated areas. A pressure difference of at least \u221210 Pa is recommended to ensure a sufficient margin of safety in practical situations.<\/jats:p>","DOI":"10.1093\/annweh\/wxab041","type":"journal-article","created":{"date-parts":[[2021,5,25]],"date-time":"2021-05-25T11:12:23Z","timestamp":1621941143000},"page":"1085-1095","source":"Crossref","is-referenced-by-count":8,"title":["Performance of Asbestos Enclosure Ventilation: Laboratory Evaluation of Complex Configuration"],"prefix":"10.1093","volume":"65","author":[{"given":"Ilpo","family":"Kulmala","sequence":"first","affiliation":[{"name":"VTT Technical Research Centre of Finland Ltd, FI-33101 Tampere, Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Markku","family":"Linnainmaa","sequence":"additional","affiliation":[{"name":"Finnish Institute of Occupational Health, FI-33032 Ty\u00f6terveyslaitos, Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Anna","family":"Kokkonen","sequence":"additional","affiliation":[{"name":"Department of Environmental and Biological Sciences, University of Eastern Finland, FI-70211 Kuopio, Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kimmo","family":"Heinonen","sequence":"additional","affiliation":[{"name":"VTT Technical Research Centre of Finland Ltd, FI-33101 Tampere, Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2245-1921","authenticated-orcid":false,"given":"Tomi","family":"Kanerva","sequence":"additional","affiliation":[{"name":"Finnish Institute of Occupational Health, FI-33032 Ty\u00f6terveyslaitos, Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5455-6288","authenticated-orcid":false,"given":"Arto","family":"S\u00e4\u00e4m\u00e4nen","sequence":"additional","affiliation":[{"name":"Finnish Institute of Occupational Health, FI-33032 Ty\u00f6terveyslaitos, Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"286","published-online":{"date-parts":[[2021,7,6]]},"reference":[{"key":"2021121714560205600_CIT0001","first-page":"1","author":"Aluehallintovirasto (AVI)","year":"2015"},{"key":"2021121714560205600_CIT0002","volume-title":"E741-00 Standard test method for determining air change in a single zone by means of a tracer gas dilution","author":"ASTM International","year":"2007"},{"key":"2021121714560205600_CIT0003","first-page":"1","volume-title":"Technische Regel f\u00fcr Gefahrstoffe. 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CEN ISO 5801:","year":"2007."},{"key":"2021121714560205600_CIT0007","article-title":"Council Directive 2009\/148\/EC of the European Parliament and of the Council of 30 November","year":"2009"},{"key":"2021121714560205600_CIT0008","volume-title":"Le bilan a\u00e9raulique des chantiers d\u2019amiante [The air flows balance in asbestos sites]. Hygie\u0300ne et se\u0301curite\u0301 du travail;","author":"Danet","year":"2000"},{"key":"2021121714560205600_CIT0009","first-page":"1","author":"Gibson","year":"2014"},{"key":"2021121714560205600_CIT0010","doi-asserted-by":"crossref","first-page":"518","DOI":"10.1080\/1047322X.1998.10390100","article-title":"Air volume migration from negative pressure isolation rooms during entry\/exit","volume":"13","author":"Hayden","year":"1998","journal-title":"Appl Occup Environ Hyg"},{"key":"2021121714560205600_CIT0011","volume-title":"HSG 247 Asbestos: the licensed contractors\u2019 guide","author":"Health and Safety Executive (HSE)","year":"2012"},{"key":"2021121714560205600_CIT0012","volume-title":"Managing and working with asbestos: control of asbestos regulations 2012","author":"Health and Safety Executive (HSE)","year":"2013"},{"key":"2021121714560205600_CIT0011a","volume-title":"Evaluation of real-world implementation of partitioning and negative pressurization for preventing the dispersion of dust from renovation sites","author":"Kokkonen A, Linnainmaa M, S\u00e4\u00e4m\u00e4nen A et al","year":"2017"},{"key":"2021121714560205600_CIT0013","doi-asserted-by":"crossref","first-page":"468","DOI":"10.1093\/annweh\/wxz016","article-title":"Control of dust dispersion from an enclosed renovation site into adjacent areas by using local exhaust ventilation","volume":"63","author":"Kokkonen","year":"2019","journal-title":"Ann Work Expo Health"},{"key":"2021121714560205600_CIT0014","first-page":"87","article-title":"Asbestipurkuty\u00f6n turvallisuuden kehitt\u00e4minen","volume-title":"Sis\u00e4ilmastoseminaari 2019. 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