RC MONOGRAPH ccupational Exposures to itumens and Their Emissions

Transcription

1 RC MONOGRAPH ccupational Exposures to itumens and Their Emissions Conversation With Co-Workers NAPA 57th Annual M

2 ERVIEW Managing the context Crafting effec messages Delivering wo "conversation PowerPoint Summary

3 TICIPATING THE RESULT

4 RC MONOGRAPH A Presentation F cupational Exposures to umens and Their Emissions

5 WHAT IS BITUMEN? orth America, bitumen is commonly known as asphalt cement halt binder. halt pavement is a mixture of about 5 percent bitumen (asphalt ent) and 95 percent small stones, sand, and gravel. men (asphalt cement) is produced by distillation of crude oil duri oleum refining. It also occurs naturally. men can be divided into broad categories based on physical erties and specifications for different uses. ight-run bitumen is used in paving. ized bitumen is used in roofing.

6 WHAT ARE IARC MONOGRAPHS? C is the International Agency for Research on Cancer. C brings together international panels of scientists to duce publications called IARC Monographs. tional and state government agencies use this information ientific support for regulatory actions.

7 RSPECTIVES FROM THE AD PAVING INDUSTRY ontinuous improvement in alth and safety is a core lue for the paving industry. etween 1970 and 2010, posures at the paving site ere reduced by 93 to 98 rcent. Our active and ongoing partnerships with national health and safety agencie academia, and unions are recognized model for othe industries. A 20+ year track record demonstrates commitmen ongoing improvement in

8 NCLUSIONS OF THE IARC ORKING GROUP IARC put bitumens and their emissions during road paving in Group 2B - same category as cell phones and coffee. IARC categorizes substances and exposures into five groups: Group 1: carcinogenic to humans Group 2A: probably carcinogenic to humans Group 2B: possibly carcinogenic to humans Group 3: not classifiable as to carcinogenicity in humans

9 S. PAVING DUSTRY RESPONSE The asphalt industry has worked for the past 20 years to reduce workers exposure. We have partnered with government agencies, academic institutions, and unions to fill the science gaps.

10 SPONSE FROM BORERS UNION eople working in the asphalt paving industry ould not be concerned about this new IARC assification. The two key animal studies on ving asphalt did not show any evidence of ncer risk, and the major IARC cancer study people working in the paving industry in urope did not show any increased risk for ncer. DR. JIM MELIUS, TOP DOCTOR FOR THE LABORER

11 S. PAVING DUSTRY RESPONSE The paving industry operates under conditions that support the comfort and health of workers. We use engineering controls and warm-mix asphalt to ensure that workers exposures are low.

12 SEARCHERS INT OF VIEW Many studies have been conducted. Three types of studies are very important to researchers: Animal inhalation Animal skin painting Human workers All three types of studies have been done on fumes from paving asphalt. All three types of studies have showed NO CANCER.

13 Y ANIMAL IN PAINTING STUDY Two-year skin painting study sponsored by the Asphalt Institute. Researchers painted asphalt paving fume condensate on the skins of mice. Key findings: Condensate was not carcinogenic. The animals did exhibit mild skin irritation. Survival was consistent with the control group. NO CANCER

14 Y ANIMAL HALATION STUDY Animal inhalation study at the Fraunhofer Institute in Germany, Rats inhaled high concentrations of asphalt paving fumes. NO CANCER

15 Y HUMAN STUDY IARC IARC conducted its own study of thousands of paving workers in eight countries. This IARC study is considered the gold standard for worker health IARC found that there is no evidence of an association between asphalt fume and lung cancer in workers. NO CANCER

16 RC RECOGNIZES PARATION Sector separation: IARC evaluated roofing, mastic, and paving separately. Grade separation: IARC evaluated different grades of asphalt separately: oxidized bitumen (roofing), hard bitumen (mastic), and straight-run bitumen (paving).

17 MPERATURE MAKES DIFFERENCE Separation by sector and grade reflects the significant impact of temperature on bitumen emissions. At higher temperatures, more fumes are emitted. At higher temperatures, the nature of the fumes is different.

18 ARM-MIX ASPHALT Warm mix continues to reduce and eliminate paving site exposures by reducing temperatures. NIOSH leader Dr. John Howard has recognized warm mix as a prime example of reducing or eliminating emissions at the source.

19 S. ASPHALT PAVING DUSTRY RECOGNITION OSH commended the phalt industry th its NORA Award for gineering controls on ving machines.

20 MMARY lth and safety is a core e for the paving industry. union s top doctor, People working in sphalt paving industry ld not be concerned t this new IARC ification. asphalt paving stry will continue to ate in a manner that

21 ANK YOU FOR UR ATTENTION estions?