Rescue Ops Bulletin 05 - Sheet3 Flashcards
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.
From the Rescue Ops Bulletins
Entrants to a confined space will be equipped with what type of gas meter?
Multi-Gas meter
From the Rescue Ops Bulletins
_________ is the most effective means of controlling atmospheric hazards in confined spaces.
Ventilation
From the Rescue Ops Bulletins
___________ is the method of choice when providing mechanical ventilation for confined spaces.
Positive Pressure Ventilation
From the Rescue Ops Bulletins
What three problems must rescuers avoid when setting up a ventilation system in a confined space?
1) Recirculation 2) short circuiting 3) Chimney Effect
From the Rescue Ops Bulletins
Where should fresh air be introduced into an oxygen deficient deep space?
Fresh air should be introduced at the bottom of the space, with an exhaust outlet at the top.
From the Rescue Ops Bulletins
How should a flammable or toxic atmosphere that is heavier than air be removed from a space?
Place exhaust inlet of negative pressure fan near bottom of space and draw out the bad air.
From the Rescue Ops Bulletins
Which Rescue Squad will be the lead unit for confined space rescue
RS 2
From the Rescue Ops Bulletins
When following safety procedures the position of any apparatus should be no closer than what distance from a confined space incident?
100 Feet
From the Rescue Ops Bulletins
What are rescuers testing the atmosphheric conditions for?`
- oxygen content 2. flammable gases and vapors 3. potential toxic air contaminants
From the Rescue Ops Bulletins
The condition of _ in and around a confined space will determine the PPE required?
air
From the Rescue Ops Bulletins
What does the entry supervisor use to determine the proper PPE if toxic conditions are present?
hazardous materials guidelines
From the Rescue Ops Bulletins
The rescue group supervisor needs approval from whom to determine if a lower level of protection is sufficient for an incident?
incident commander
From the Rescue Ops Bulletins
If the confined space is of size that requires the removal of the SCBA to access the victim, then rescuers must utilize what?
supplied air breathing appartus
From the Rescue Ops Bulletins
Whos responsible for sizing up the incident to determine if it is a rescue situation or a recovery mission?
entry supervisor
From the Rescue Ops Bulletins
In order to utilize SCBA in a space the entrants must not exceed_ travel distance away from the entrance?
25 feet
From the Rescue Ops Bulletins
What is the ideal rope to be attached to the harness when utilizing an SCBA in a confined space?
1/2 rescue rope
From the Rescue Ops Bulletins
To utilize the SCBA in a confined space the victim/position should be within what?
sight of the entrance
From the Rescue Ops Bulletins
What is the Rule of 3 for SCBA entry time?
- 1/3 of SCBA supply utilize to enter/locate/work 2. 1/3 of SCBA supply utilized for exit from spcace 3. 1/3 of SCBA supply to be kept in rescue ( for safety)
From the Rescue Ops Bulletins
The Supplied air breathing apparatus has what advantage of the SCBA?
reduced profile and unlimited air supply
From the Rescue Ops Bulletins
When using SABA in a confined space the entrants are not to exceed ?
300 travel form air supply
From the Rescue Ops Bulletins
Any hose connections on the SABA should be secured with?
duct tape
From the Rescue Ops Bulletins
What is the rope size in the umbilical on the SABA?
8mm
From the Rescue Ops Bulletins
Record all air test readings on what?
entry permit
From the Rescue Ops Bulletins
Air testing for confined spaces having top entrance you would slowly raise the samplying probe stopping at intervals of_ to ensure that the atmosphere is not stratified?
two or four feet
From the Rescue Ops Bulletins
When air testing confined spaces having a side or bottom entrance you would slowly test areas inside the confined how?
start at the bottom closest to the entrance and slowly move up and to the rear of the space
From the Rescue Ops Bulletins
_ is the most effective means of controlling atmospheric hazardous in confined spaces?
ventiation
From the Rescue Ops Bulletins
What is the method or choice when providing mechanical ventilation for confined spaces?
positive pressure ventilation
From the Rescue Ops Bulletins
What are the ventilation problems a rescuer must avoid when setting up a system?
- recirculation 2. short circuiting 3. chimney effect
