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HHO Coke Oven Emissions & Medical Surveillance
- 1. HAVERHILL OPERATIONS Coke Oven Emissions and Medical Surveillance Rev. October 2019
- 2. • Benzene soluble fraction of total PM from carbonization of coal – Lung and kidney cancer • PEL: 150 ug/m3 2 Coke Oven Emissions (COE)
- 3. • Benzene soluble fraction of total PM from carbonization of coal – Lung and kidney cancer • PEL: 150 ug/m3 • Many work practice & engineering controls in place – Oven design for thermal destruction of potential COE, 3 Coke Oven Emissions (COE)
- 4. • Benzene soluble fraction of total PM from carbonization of coal – Lung and kidney cancer • PEL: 150 ug/m3 • Many work practice & engineering controls in place – Oven design for thermal destruction of potential COE, – Reduces potential for exposure 4 Coke Oven Emissions (COE)
- 5. • Benzene soluble fraction of total PM from carbonization of coal – Lung and kidney cancer • PEL: 150 ug/m3 • Many work practice & engineering controls in place – Oven design for thermal destruction of potential COE – Reduces potential for exposure – COE monitoring is consistently below PEL 5 Coke Oven Emissions (COE)
- 6. • Benzene soluble fraction of total PM from carbonization of coal – Lung and kidney cancer • PEL: 150 ug/m3 • Many work practice & engineering controls in place – Oven design for thermal destruction of potential COE, – Reduces potential for exposure – COE monitoring is consistently below PEL – Respirators are not required because controls reduce the exposure below the PEL 6 Coke Oven Emissions (COE)
- 7. • Combustion inside oven chamber – No byproduct chemical recovery or gas cleaning – Gas travel through sole flues extends coking – Continually supplies heat for coking process 7 Engineering & Work Practice Controls
- 8. • Combustion inside oven chamber – No byproduct chemical recovery or gas cleaning – Gas travel through sole flues extends coking – Continually supplies heat for coking process • Negative pressure – Maintained by ID fans & uptake dampers – Combusted gases go to common tunnel 8 Engineering & Work Practice Controls
- 9. • Continuous flow of coal to & coke from ovens during production – Minimizes time that door is off • Remote operation of equipment/automation – Operators are in positive pressure cabs 9 Engineering & Work Practice Controls
- 10. • Burners are responsible for coking – Visually inspect ovens to ensure they are coked out – Monitor temperature data 10 Engineering & Work Practice Controls
- 11. • High temperatures – Gas lances can be installed • Routine oven & machinery maintenance • Ovens are sealed – Insulation on outside of ovens – Door sills are cleaned – Door latches are secure 11 Engineering & Work Practice Controls
- 12. • Baghouses, multiclones, hoods, & baffles – Run continuously during production – Help control COE at oven • Level coal bed = more consistent coking • Monitor common tunnel pressure/temp. daily 12 Engineering & Work Practice Controls
- 13. • Hygienic work practices for employees working in COE areas – Showering at end of shift – Wash hands and face before eating/smoking – No eating, drinking, smoking, chewing gum or tobacco, or applying cosmetics in COE areas • Drinking water must be in a closed container – Do not place PPE in eating/food prep areas 13 Engineering & Work Practice Controls
- 14. OSHA standard developed to address byproduct coke plants 14 Coke Oven Emissions (COE) Byproduct ovens Positive pressure Pose higher risk of exposure HHO’s heat recovery ovens Negative pressure & pull air in Rather than having gas come out
- 15. OSHA standard developed to address byproduct coke plants 15 Coke Oven Emissions (COE) OSHA • Complemented our • Engineering controls • Negative pressure • COE test results • By regulation, they can not give single companies an interpretation that the COE Standard does not apply • Therefore, HHO continues to comply with signage, monitoring, & other reqs • SunCoke has option to seek variance
- 16. 16 COE Suggested PPE • Hardhats • Safety boots – Insulated from hot surfaces • FR jackets, pants, and gloves – Laundered using an industrial laundering service – Clean uniforms weekly – Damaged uniforms repaired/replaced • Spoggles
- 17. 17 COE Required Facilities • Breakrooms – Temperature controlled, positive pressure, filtered air • Locker rooms – Separate storage for street clothes and PPE – Do not remove PPE that is exposed to COE from the plant
- 20. 20 COE Monitoring • Quarterly personal monitoring • Representative of each position/shift in COE areas – Oven machinery – Wharf – Service/repair of stationary ram – Sill raking/bench-related activities – Oven burning – Walking along/repairs top- side of the ovens – Cleaning coal/coke-side pad – Screening plant entry
- 21. 21 COE Monitoring • Monitoring if conditions change & increased potential for exposure exists • Results posted to Safety Board w/i 15 days of getting final rpt • If COE > PEL, respirator requirement will change for that area • Employees or their representatives can observe monitoring upon request with reasonable time to accommodate observation
- 22. 22 COE Medical Surveillance • Provided at new hire and annually thereafter – Review of work history and medical history questionnaire – Posterior-anterior chest x-ray – Pulmonary function test – Weight – Skin examination – Urinalysis for sugar, albumin, and hematuria – Urinary cytologic examination • You may waive the COE medical surveillance – May lead to undiagnosed medical conditions – COE exposure can lead to lung and kidney cancer – Signing waiver indicates understanding of these risks
- 23. 23 COE Medical Surveillance • Results will be provided to you when received: – Physician's opinion whether medical condition was detected that could place employee at increased risk from exposure – Recommendations • Use of Respirators • Further limit COE exposure
- 24. 24 Medical Records Request Forms • Access to Employee Medical/Exposure Records • Specific Written Consent • HHO will provide access in a reasonable time, place, and manner – Disclose earliest date of access w/i 15 days – Under supervision of HR to maintain confidentiality • Other forms reqd by medical provider – Will only give to employee’s designated representative under certain circumstances – May recommend disclosure of records under supervision of physician