howtherespiratorprovidesprotection呼吸器是如何-ohlearning.ppt

* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * Effective protection given by RPE Respiratory protective equipment can be the best designed, most effective filtering device on the market, but if it is not worn when it should be, the drop in protection for the user can in some cases be dramatic This chart plots levels of protection of respirators, against the effect of not wearing them during an 8 hr work shift The first 10 minutes of non wear time tends to affect the higher protective devices the most Even a product with a protection factor of 50 will drop down to about 30 if not worn for 10 minutes Therefore the importance of wearability and good education of the user cannot be stressed strongly enough, often harmful dusts can remain in the air for 20 minutes or more after work has finished, e.g electric sanding activities in a wood working shop * * * * * Clothing Style Size 防护服类型和规格 Variety of styles, configurations sizes多种类型、配置和规格 Hoods, vests, aprons, coveralls to fully encapsulating suits防护罩、 马甲、工作裙、连身工作服及完全密封服 Source: DuPont Personal Protection – reproduced with permission来源： DuPont 个人防护－经许可装载 Fully Encapsulating Suit 完全密封服 Valves气阀 Wide face shield宽体护面罩 Respirator – SCBA呼吸器－自给式空气呼吸器 Loose fitting sleeves宽松式套袖 Attached gloves连衣式手套 Airtight closure密封式闭合 Storm flap防风前衣襟 Attached socks outer boot top cover附着式袜子和靴子外顶罩 Source: DuPont Personal Protection – reproduced with permission来源： DuPont 个人防护－经许可装载 Standard CPC Test Procedures标准化学防护服测试程序 ISO Standards国际标准化组织标准 EN Standards欧洲标准 ASTM Standards美国试验与材料学会标准 NFPA Standards美国消防协会（NFRA）标准 Chemical Resistance of Material Tests材料耐化性测试 Permeation resistance 耐渗透性能 Resistance to penetration 耐穿透性 Particulate resistance 抗微粒性 Liquid penetration resistance 抗液体渗透性 Liquid repellency 排水性 Whole Chemical Protective Clothing Integrity Tests全套化学防护服整体性试验 Leak tightness 密封性 Inward leakage 内向渗漏 Liq