Flashcard · Advanced Application of Safety Principles
Why is prevention through design cheaper?
Changing a drawing costs far less than changing a built facility.
Prevention through design (concept)
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- Why is prevention through design cheaper?
- Changing a drawing costs far less than changing a built facility.Prevention through design (concept)
- PtD covers which life-cycle stages?
- Construction, operation, maintenance and demolition, not operation alone.Prevention through design (concept)
- Two meanings of PFD in process safety?
- Process flow diagram, or probability of failure on demand.Process safety (concept)
- LOPA mitigated frequency?
- Initiating event frequency x PFD of each independent protection layer.Layer of protection analysis (concept)
- When can a protection layer be credited in LOPA?
- When it is independent, effective for the scenario and auditable.Layer of protection analysis (concept)
- Relief device sizing basis?
- The worst credible case: fire, blocked outlet or runaway reaction.Process safety (concept)
- Tool for which chemicals react dangerously together?
- A reactivity (compatibility) matrix.Process safety (concept)
- Construction fall protection trigger height?
- 6 ft or more to a lower level.OSHA 29 CFR 1926.501(b)(1)
- Personal fall arrest: maximum free fall?
- 6 ft, with no contact with a lower level.OSHA 29 CFR 1926.502(d)(16)(iii)
- Personal fall arrest: maximum deceleration distance?
- 3.5 ft.OSHA 29 CFR 1926.502(d)(16)(iv)
- Maximum arresting force with a body harness?
- 1,800 lb.OSHA 29 CFR 1926.502(d)(16)(ii)
- Fall arrest anchorage strength?
- 5,000 lb per worker attached, or a qualified person's design with a safety factor of at least two.OSHA 29 CFR 1926.502(d)(15)