受限空间和氮气危害及防范精选.pdf

Customer Communication Package 受限空间及氮气的危害及防范受限空间及氮气的危害及防范 受限空间及氮气的危害及防范受限空间及氮气的危害及防范 CSE and N2 Hazards and Prevention thth May 10May 10 , 2010, 2010 Zhou Xingchen Gasification, Global Solutions Upstream, Shell Projects Technology Copyright of Shell Confidential April 2010 1 Agenda 内容内容 内容内容 1. Incident Sharing 1 ~ 5 事故案例分享 2. Key Learning 主要教训 3. N2 Hazards and Prevention 氮气危害与防范 4.4. CSE Best PracticesCSE Best Practices 受限空间管理良好实践分享 5. Personnel Gas Detectors 个人气体探测仪 CSE: confined space entry JHA: job hazards analysis PTW: permit to work Copyright of Shell Confidential April 2010 2 CCR: central control roo 1.0 Incident Sharing 1-5 事故案例分享事故案例分享 1 ~5 事故案例分享事故案例分享 Incident Sharing -1 Incident Description 事故述事故述 事故述事故述 We were doing site visit at the gasifier. After client HSE staff checked the man hole A5 Shell staff came closer to A5 as well. Suddenly his personnel gas detector vent off and indicated low O2 content. He immediately escaped from the spot. Site investigation indicated that N2 blowback into gasifier was not shut off before manholes were opened. Steam ejector was started but without o