Rescue Ops Bulletin 05 - Sheet3 Flashcards
(52 cards)
From the Rescue Ops Bulletins
A confined space is large enough and so configured that a person can _________ (3 answers)
- Enter and peform assigned work 2. Has limited or restricted means for entry/exit 3. Not designed for continuous human occupancy
From the Rescue Ops Bulletins
When has entry into a confined space occured?
When any part of entrants body breaks the plane of the opening
From the Rescue Ops Bulletins
Atmospheric oxygen content in a confined space below ______% and above _____% is a hazardous atmosphere
Below 19.5%, above 23.5%
From the Rescue Ops Bulletins
Flammable gas, vapor, or mist in excess of ____% of its lower flammable limit is a hazardous atmosphere.
10%
From the Rescue Ops Bulletins
In general, if the concentration of dust obscures vision at a distance of ______ or less it may be within is flammable range
5 feet
From the Rescue Ops Bulletins
What is a Permit Required Confined Space?
A confined space that also has one of the following: 1) has or could have hazardous atmosphere. 2) potential to engulf an entrant. 3) Internal configuration such that entrant can be trapped or asphyxiated - inwardly converging walls, floor that slopes downward & tapers to smaller cross sections. 3) contains any other serious health / safety hazard
From the Rescue Ops Bulletins
One step of the intial assessment for a confined space emergency is to consciously determine if this is a ___________
rescue or recovery
From the Rescue Ops Bulletins
When preparing for entry into a confined space, all fixed mechanical devices and equipment capable of causing injury will be placed in a ___________
zero mechanical state
From the Rescue Ops Bulletins
When preparing for entry into a confined space, all electrical equipment (excluding lighting) will be locked out in the _______ position with a key type padlock.
open (“off”)
From the Rescue Ops Bulletins
If entry into a confined space is made wih SCBA, how far are members permitted to move from entrace?
25 feet
From the Rescue Ops Bulletins
Can an SCBA be removed to make entry into a confined space, then donned again once inside the space?
No; must use Supplied Air Breathing Apparatus (SABA)
From the Rescue Ops Bulletins
Rescuers will not enter confined spaces containing atmospheres greater than _____ of materials LEL.
10%
From the Rescue Ops Bulletins
Atmospheres in a confined space will be tested for 3 things in what order:
1) Oxygen content. 2) Flammable gases and vapors. 3) Potential toxic air contaminants
From the Rescue Ops Bulletins
Where are results of confined space atmospheric monitoring recorded, and at what interval?
Entry permit, recorded at 5-minute intervals
From the Rescue Ops Bulletins
Generally, entry team members will be limited to ______ in most spaces.
30 minutes
From the Rescue Ops Bulletins
Prior to entry each team member will be logged on the _______ or ______ by the attendant.
confined space work sheet or entry permit
From the Rescue Ops Bulletins
What PPE will be worn by the back-up person / team for a confined space incident?
Same PPE as the entry team
From the Rescue Ops Bulletins
When any move is made through an opening to the confined space, ensure it is made ___________.
quickly and smoothly
From the Rescue Ops Bulletins
What type of lights and how many are needed by entry team?
No less than two intrinsically safe lights
From the Rescue Ops Bulletins
Do confined space entry team members need to wear a harness?
Yes, class III
From the Rescue Ops Bulletins
What is the “Rule of 3” for SCBA usage in confined spaces?
1/3 of SCBA to enter/locate/work, 1/3 to exit from space, and 1/3 for reserve / safety.
From the Rescue Ops Bulletins
When using SABA in confined space, how far may the entrant travel from air supply?
300 feet
From the Rescue Ops Bulletins
When using SABA in confined space, what serves as the rescuer’s tag line?
8 mm ope in the umbilical
From the Rescue Ops Bulletins
When testing the air inside a confined space with a top entrance, where should the probe be placed to begin testing?
start testing air near bottom of space, working your way up.
