confined space Flashcards
`what three attendant rescue masters need to be assigned for confined space operations? sog
access control
safety
rehab
what are the four phases of confined space operations? sog
Phase I arrival on scene/ establish command/ size up
Phase II pre-entry operations
Phase III entry operations/victim removal
Phase IV termination
what are the duties of the attendant/rescue master? sog
determine hazards and products contained in the confined space
perform atmospheric testing in the space to determine oxygen levels, flammability and toxicity at opening and confined space.
advise command of PPE level
what must all instruments used to monitor the confined space have: sog
an audible alarm
instruments used to monitor the confined space will be calibrated to ___ % of the lower explosive limit (LEL) of the calibrate gas. sog
10 percent
___ % on O2 low and ___% O2 enriched. sog
19.5 on O2 low and 23.5% O2 enriched
flammability alarm set at ___% LEL sog
10%
toxicity carbon monoxide at ____ppm
35
hydrogen sulfide at ____ppm
10 ppm
at O2 readings below ____ percent the LEL reading will not be accurate.
16
atmosphere reading shall be a continuous operation and relayed to the rescue master every ___minutes. when monitoring inside a confined space atmosphere reading will be taken every __feet for ___seconds. sog
five minutes
every 5 feet for 30 seconds
who shall determine adequate ventilation of confined space. sog
command shall assign a ventilation sector/group
positive and negative ventilation should be based on what? sog
vapor density and molecular weight of the product and determined by the ventilation sector/group
ventilation sector/group should consider ____ pressure ventilation if there is only one entry point. sog
one entry point
who will be assigned to conduct the actual entry into the confined space. sog
rescue sector/groups
