418 Confined Space Flashcards
DEFINITION
A confined space refers to a space which:
• is not intended for continuous occupancy
• has limited openings for entry and exit
• has unfavorable natural ventilation which may contain:
• A toxic and/or flammable atmosphere
OR
• oxygen levels below 19.5% or above 23.5%
• is an open-top spaces more than 4 feet deep
PRE-ENTRY/ENTRY PROCEDURES
Personnel in Place
A rehab area with ALS capabilities shall be established in the ___ ___with special attention given to the wind direction and run off, if decon is established.
cold zone
PRE-ENTRY/ENTRY PROCEDURES
Atmosphere Monitoring
Note: The hot zone may extend beyond the Confined Space opening, especially during _____
____ will assign responsibility for monitoring the atmosphere, which will be done prior to entry and while personnel are operating in the Confined Space. The ____ ____ should be given this assignment if they are on scene.
___ ___ will be equipped with an atmospheric monitor while in the confined space.
ventilation
Command
HazMat Team
All teams
PRE-ENTRY/ENTRY PROCEDURES
Ventilation
If there is only 1 entry/exit point, duck work should be placed in the Confined Space and ____ ____ ventilation applied.
If there are 2 entry/exit into the Confined Space, ____ ____ ventilation may be provided at one entry/exit point and ____ ____ ventilation at the other.
The space should be sufficiently ventilated so that the levels of combustibles do not exceed __ % of their ___ ___ ___ (LEL); nor should toxic substance be permitted to reach their respective ___ ___ ___ (TLV)
positive pressure
negative pressure
positive pressure
10%
lower explosive limit (LEL)
threshold limit values (TLV)
PRE-ENTRY/ENTRY PROCEDURES
communications
Direct communications with the Entry Team may be accomplished by the following ways:
- Hardwire communications
- Line of sight (hand signals)
- Direct voice communications
- Radio
PERSONAL PROTECTIVE EQUIPMENT
The ____ ____ shall determine the appropriate PPE to be worn on all entries.
The ____ ____ must wear the appropriate protective clothing and equipment as established by the IC.
Incident Commander
Entry Team
PERSONAL PROTECTIVE EQUIPMENT
Lifelines
All personal entering a confined space shall don the following:
• Wear a full body harness
• Wear an SCBA or SAR
• Have a lifeline attached

RECORDS
For each incident requiring Confined Space entry, the following shall be completed:
- Confined Space Entry Checklist
* Confined Space Medical Checklist
Person in charge of the HotZone
Attendant
____ ____ is critical in order to evaluate the hazards to rescuers and the viability of victims. Therefore, it is extremely important to call for the hazmat team as soon as the potential for hazardous materials is recognized.
Product identification
___/___ ___ must be determined prior to entry. 
Product/Fluid levels
The hot zone may extend beyond the confined space opening, especially during ____
Ventilation
