{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,23]],"date-time":"2026-08-23T15:54:31Z","timestamp":1787500471841,"version":"build-2736575974"},"reference-count":34,"publisher":"BMJ","issue":"4","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Occup Environ Med"],"published-print":{"date-parts":[[2007,4]]},"abstract":"<jats:p>\n                    <jats:bold>Objectives:<\/jats:bold>\n                    To identify and describe the exposure to selected known and suspected carcinogenic agents, mixtures and exposure circumstances for defined job categories in Norway\u2019s offshore petroleum industry from 1970 to 2005, in order to provide exposure information for a planned cohort study on cancer.\n                  <\/jats:p>\n                  <jats:p>\n                    <jats:bold>Methods:<\/jats:bold>\n                    Background information on possible exposure was obtained through company visits, including interviewing key personnel (n\u200a=\u200a83) and collecting monitoring reports (n\u200a=\u200a118) and other relevant documents (n\u200a=\u200a329). On the basis of a previous questionnaire administered to present and former offshore employees in 1998, 27 job categories were defined.\n                  <\/jats:p>\n                  <jats:p>\n                    <jats:bold>Results:<\/jats:bold>\n                    This study indicated possible exposure to 18 known and suspected carcinogenic agents, mixtures or exposure circumstances. Monitoring reports were obtained on seven agents (benzene, mineral oil mist and vapour, respirable and total dust, asbestos fibres, refractory ceramic fibres, formaldehyde and tetrachloroethylene). The mean exposure level of 367 personal samples of benzene was 0.037 ppm (range: less than the limit of detection to 2.6 ppm). Asbestos fibres were detected (0.03 fibres\/cm\n                    <jats:sup>3<\/jats:sup>\n                    ) when asbestos-containing brake bands were used in drilling draw work in 1988. Personal samples of formaldehyde in the process area ranged from 0.06 to 0.29 mg\/m\n                    <jats:sup>3<\/jats:sup>\n                    . Descriptions of products containing known and suspected carcinogens, exposure sources and processes were extracted from the collected documentation and the interviews of key personnel.\n                  <\/jats:p>\n                  <jats:p>\n                    <jats:bold>Conclusions:<\/jats:bold>\n                    This study described exposure to 18 known and suspected carcinogenic agents, mixtures and exposure circumstances for 27 job categories in Norway\u2019s offshore petroleum industry. For a planned cohort study on cancer, quantitative estimates of exposure to benzene, and mineral oil mist and vapour might be developed. For the other agents, information in the present study can be used for further assessment of exposure, for instance, by expert judgement. More systematic exposure surveillance is needed in this industry. For future studies, new monitoring programmes need to be implemented.\n                  <\/jats:p>","DOI":"10.1136\/oem.2006.028225","type":"journal-article","created":{"date-parts":[[2006,10,17]],"date-time":"2006-10-17T08:06:26Z","timestamp":1161072386000},"page":"250-258","source":"Crossref","is-referenced-by-count":32,"title":["Exposure to carcinogens for defined job categories in Norway\u2019s offshore petroleum industry, 1970 to 2005"],"prefix":"10.1136","volume":"64","author":[{"given":"Kjersti","family":"Steinsv\u00e5g","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Magne","family":"Br\u00e5tveit","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bente E","family":"Moen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"239","published-online":{"date-parts":[[2006,10,16]]},"reference":[{"key":"2024052223225853000_64.4.250.1","unstructured":"Ministry of Petroleum and Energy. Facts 2005. The Norwegian petroleum sector. Oslo: Ministry of Petroleum and Energy, 2005; http:\/\/odin.dep.no\/oed\/english\/doc\/reports\/026031-120027\/dok-bn.html (accessed 14 December 2006)."},{"key":"#cr-split#-2024052223225853000_64.4.250.2.1","unstructured":"Statistics Norway. Principal figures for extraction of crude oil and natural gas. 1998-2003. Oslo: Statistics Norway, 2005"},{"key":"#cr-split#-2024052223225853000_64.4.250.2.2","unstructured":"http:\/\/www.ssb.no\/english\/subjects\/10\/06\/20\/oljev_en\/tab-2005-07-11-01-en.html (accessed 14 December 2006)."},{"key":"2024052223225853000_64.4.250.3","first-page":"2300","volume":"103","year":"1983","journal-title":"Tidsskr Nor Laegeforen"},{"key":"2024052223225853000_64.4.250.4","doi-asserted-by":"publisher","DOI":"10.1093\/annhyg\/34.2.149"},{"key":"2024052223225853000_64.4.250.5","unstructured":"Sjonfjell H, Romsbotn B, Erikstein H, et al. Kjemisk eksponering p\u00e5 norsk sokkel (Exposure to chemicals on Norway\u2019s Continental Shelf). Stavanger: Petroleum Safety Authority Norway, 2005 (in Norwegian),."},{"key":"2024052223225853000_64.4.250.6","doi-asserted-by":"publisher","DOI":"10.1093\/annhyg\/44.4.301"},{"key":"2024052223225853000_64.4.250.7","unstructured":"Health and Safety Executive. Occupational exposure to benzene, toluene, xylene and ethylbenzene during routine offshore oil and gas production operations. HSE Offshore Technology Report OTO 1999 088. London: Health and Safety Executive, 2000."},{"key":"2024052223225853000_64.4.250.8","doi-asserted-by":"publisher","DOI":"10.1093\/annhyg\/mei065"},{"key":"2024052223225853000_64.4.250.9","doi-asserted-by":"publisher","DOI":"10.1093\/annhyg\/35.6.651"},{"key":"2024052223225853000_64.4.250.10","doi-asserted-by":"publisher","DOI":"10.1093\/annhyg\/32.3.325"},{"key":"2024052223225853000_64.4.250.11","doi-asserted-by":"crossref","first-page":"254","DOI":"10.2118\/67835-PA","volume":"15","year":"2000","journal-title":"SPE Drilling Completion"},{"key":"2024052223225853000_64.4.250.12","doi-asserted-by":"publisher","DOI":"10.1093\/annhyg\/mei049"},{"key":"2024052223225853000_64.4.250.13","doi-asserted-by":"publisher","DOI":"10.1093\/annhyg\/meg028"},{"key":"2024052223225853000_64.4.250.14","doi-asserted-by":"publisher","DOI":"10.1177\/074823379000600104"},{"key":"2024052223225853000_64.4.250.15","unstructured":"Health and Safety Executive. 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Yrkeseksponering i Norge Ioniserende str\u00e5ling Ikke-ioniserende str\u00e5ling (Radiation exposure of workers in Norway) Str\u00e5levernRapport 2005: 15, \u00d8ster\u00e5s: Norwegian Radiation Protection Authority, 2005 (in Norwegian)."},{"key":"2024052223225853000_64.4.250.23","doi-asserted-by":"crossref","first-page":"843","DOI":"10.1177\/074823379801400606","volume":"14","year":"1998","journal-title":"Toxicol Ind Health"},{"key":"2024052223225853000_64.4.250.24","doi-asserted-by":"publisher","DOI":"10.1080\/104732299302800"},{"key":"2024052223225853000_64.4.250.25","doi-asserted-by":"crossref","first-page":"361","DOI":"10.1080\/1047322X.1992.10390173","volume":"7","year":"1992","journal-title":"Appl Occup Environ Hyg"},{"key":"2024052223225853000_64.4.250.26","doi-asserted-by":"publisher","DOI":"10.1006\/rtph.1997.1153"},{"key":"2024052223225853000_64.4.250.27","doi-asserted-by":"crossref","first-page":"32","DOI":"10.1080\/1047322X.1994.10388260","volume":"9","year":"1994","journal-title":"Appl Occup Environ Hyg"},{"key":"2024052223225853000_64.4.250.28","unstructured":"IARC. 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