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TOPIC: DONNING SELF-CONTAINED BREATHING APPARATUS
LEVEL OF INSTRUCTION:PSYCHOMOTOR
OBJECTIVES:
2.4.6 Demonstrate donning and doffing of Self Contained Breathing Apparatus while wearing fullprotective equipment.
2.4.6.1 Dons "30-60" minute pressure/demand type Self Contained Breathing Apparatus according tomanufacturers instructions or as illustrated in IFSTA Essentials.(3-3.1b)
MATERIALS NEEDED: SCBA
REFERENCES: IFSTA Essentials, 4th edition, pages 109-121.
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DONNING SELF-CONTAINED BREATHING APPARATUS
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PRESENTATION (STEP 2) INSTRUCTOR NOTES
II. Donning SCBA From the Ground
A. Crouches or kneels at the end opposite the cylinder
valve
B. Checks the air cylinder gauge to ensure that the
cylinder is full
C. Opens the cylinder valve slowly and listens for theaudible alarm as the system pressurizes
D. Fully opens the cylinder valve after the alarm
sounds
- If the audible alarm does not sound, or if it
sounds but does not stop, place the unit out
of service by tagging it and notifying an
officer; use another unit
E. Check the regulator gauge and cylinder gauge
pressure to ensure that they read within 100 psi of
the same pressure
F. Spreads the harness straps out to their respective
sides
G. Grasps the back plate or cylinder with both hands,
one at each side, making sure that the cylinder valve
is pointed away from them
H. Lifts the cylinder, letting the regulator and harness
hang freely
I. Raises the cylinder overhead, letting the elbows
find the respective loosened harness shoulder strap
loops
J. Grasps the shoulder straps as the SCBA begins to
slide down the back
K. Lets the straps slide through the hands as the
backpack lowers into place
L. Leans forward to balance the cylinder on the back
and then fastens the chest buckle if the unit has achest strap
M. Continues leaning forward and tightens the shoulder
straps by pulling them outward and downward.
(NOTE: It is sometimes necessary to lean forwardwith a quick jumping motion to properly position
the SCBA on the back while tightening the straps)
N. Fastens and adjusts the waist strap until the unit fits
snugly
O. If the facepiece harness is a web-type, grasps the
harness with their thumbs through the straps from
the inside, and spreads the straps
2-4.6.1
FOLLOW MANUFACTURER'S
INSTRUCTIONS
p. 101 & p. 111
This step may not be able to be performed at this
point depending on the SCBA the student isusing
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PRESENTATION (STEP 2) INSTRUCTOR NOTES
P. Pushes the top of the harness up their forehead
to remove hair that may be present between
the forehead and the sealing surface of the
facepiece
Q. Center the chin in the chin cup and position
the facepiece harness so it is centered at the
rear of the head
R. Tightens the harness straps by pulling them
evenly and simultaneously to the rear the
lower straps first
S. Repeats R with the temple straps
T. Repeats R with the top straps
U. Checks the facepiece seal by exhaling deeply,
sealing the end of the low-pressure hose with
your bare hand, and inhaling slowly (not
deeply), holding their breath for 10 seconds.(NOTE: Inhaling very quickly will
temporarily seal any leak and will give a false
sense of a proper seal)
1. If there is evidence of leaking, adjustor re-don the facepiece
V. Checks the exhalation valve by inhaling while
sealing the end of the low-pressure hose with
the palm of their hand, and then exhaling
1. If the exhalation escapes at the edges
of the facepiece and does not go
through the exhalation valve, keep the
low-pressure hose sealed, press the
facepiece against your face, and
exhale to free the valve
2. Use caution when exhaling against a
sealed facepiece in order to prevent
discomfort and possible damage to the
inner ear from exhaling forcefully
FOLLOW MANUFACTURER'S
INSTRUCTIONS
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PRESENTATION (STEP 2) INSTRUCTOR NOTES
II. From The Ground - Coat Method
A. Crouches or kneels at the end opposite the cylinder
valve
B. Checks the air cylinder gauge to ensure that the
cylinder is full
C. Opens the cylinder valve slowly and listens for theaudible alarm as the system pressurizes
D. Opens the cylinder valve fully after the alarm
sounds
1. If the audible alarm does not sound, or if it
sounds but does not stop, place the unit out
of service by tagging it and notifying an
officer; use another unit
E. Check the regulator gauge and cylinder gauge to
ensure that they read within 100 psi of each other
F. Spreads the harness straps out to their respective
sides
G. Crosses their arms, left over right
H. Grasps the shoulder straps at the top of the harness,
left hand holding the left strap and right hand
holding the right strap
I. Lift the SCBA. Using both arms, swing the unit
around your right shoulder, and raising your left
arm, continue bringing the unit behind your head
and onto your back. Both hands should still be
grasping the shoulder straps high on the harness
J. Grasps the shoulder straps as the SCBA begins to
slide down the back
K. Lets the straps slide through the hands as the
backpack lowers into place
L. Leans forward to balance the cylinder on the back
and then fastens the chest buckle, if the unit has achest strap
M. Continues leaning forward and tightens the shoulder
straps by pulling them outward and downward
(NOTE: It is sometimes necessary to lean forwardwith a quick jumping motion to properly position
the SCBA on the back while tightening the straps)
N. Fastens and adjusts the waist strap until the unit fits
snugly
O. If the facepiece harness is a web-type, grasps the
harness with their thumbs through the straps from
the inside, and spreads the straps
P. Pushes the top of the harness up the forehead to
FOLLOW MANUFACTURER'S
INSTRUCTIONS
p. 101
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PRESENTATION (STEP 2) INSTRUCTOR NOTES
remove
hair that may be present between the forehead and the sealing
surface of the facepiece
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PRESENTATION (STEP 2) INSTRUCTOR NOTES
Q. Centers the chin in the chin cup and positions the
harness so that it is centered at the rear of the head
R. Tightens the harness straps by pulling them evenly
and simultaneously to the rear, the lower straps first
S. Repeats R with the temple strapsT. Repeats R with the top straps
U. Checks the facepiece seal by exhaling deeply,
sealing the end of the low-pressure hose with yourbare hand, and inhaling slowly (not deeply),
holding the breath for 10 seconds. (NOTE:
Inhaling very quickly will temporarily seal any leak
and will give a false sense of a proper seal)
- If there is evidence of leaking, adjust or re-
don the facepiece
V. Checks the exhalation valve by inhaling whilesealing the end of the low-pressure hose with the
palm of their hand, and then exhaling
1. If the exhalation escapes at the edges of the
facepiece and does not go through the
exhalation valve, keep the low-pressure
hose sealed, press the facepiece against
your face, and exhale to free the valve
2. Use caution when exhaling against a sealed
facepiece in order to prevent discomfort
and possible damage to the inner ear from
exhaling forcefully
W. Connects the low-pressure hose to the regulator. If
the unit has a donning switch, turn it to the
PRESSURE, USE or ON position. If the unit does
not have a donning switch, open the mainline valve
X. Checks for positive pressure by gently breaking the
facepiece seal by inserting two fingers under the
edge of the facepiece
- You should be able to feel air moving past your
fingers. If you cannot feel air movement, remove
the unit and have it checked
III. From The Ground Method 2
A. Crouches or kneels at the end opposite the cylinder
valve
B. Checks the air cylinder gauge to ensure that the
cylinder is full
C. Opens the cylinder valve slowly and listens for theaudible alarm as the system pressurizes
FOLLOW MANUFACTURER'S
INSTRUCTIONS
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PRESENTATION (STEP 2) INSTRUCTOR NOTES
- If the audible alarm does not sound, or if it
sounds but does not stop, place the unit out
of service by tagging it and notifying an
officer; use another unit
D. Fully opens the cylinder valve after the alarm
sounds
E. Check the regulator gauge and cylinder gauge to
ensure that they read within 100 psi of the same
pressure
F. Spreads the harness straps out to their respective
sides
G. Cross their arms, left over right. Grasps the
shoulder straps at the top of the harness, left hand
holding the left strap and right hand holding the
right strap
H. Lift the SCBA. Using both arms, swings the unitaround the right shoulder, and raising the left arm,
continues bringing the unit behind the head and
onto the back. Both hands should still be grasping
the shoulder straps high on the harness
I. Maintains a firm grip on the straps, slides the hands
down the straps to the shoulder strap buckles. The
elbows should be between the straps and the
backpack
J. Leans forward to balance the cylinder on their back
and then fastens the chest buckle if the unit has a
chest strap
K. Continues leaning forward and tightens the shoulder
straps by pulling them outward and downward.
(NOTE: It is sometimes necessary to lean forward
with a quick jumping motion to properly position
the SCBA on the back while tightening the straps)
L. Fastens and adjusts the waist strap until the unit fits
snugly
M. If the facepiece harness is a web-type, grasps the
harness with the thumbs through the straps from the
inside, and spreads the straps
N. Pushes the top of the facepiece harness up the
forehead to remove hair that may be present
between the forehead and the sealing surface of the
facepiece
O. Centers the chin in the chin cup and positions thefacepiece harness so that is centered at the rear of
the head
FOLLOW MANUFACTURER'S
INSTRUCTIONS
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PRESENTATION (STEP 2) INSTRUCTOR NOTES
P. Pulls the facepiece harness straps evenly and
simultaneously to the rear to tighten them, lower
straps first
Q. Repeats P with the temple straps
R. Repeats P with the top strapsS. Checks the facepiece seal by exhaling deeply,
sealing the end of the low-pressure hose with your
bare hand, and inhaling slowly (not deeply). Hold
the breath for 10 seconds. (NOTE: Inhaling very
quickly will temporarily seal any leak and will give
a false sense of a proper seal)
- If there is evidence of leaking, adjust or redon thefacepiece
T. Checks the exhalation valve by inhaling while
sealing the end of the low-pressure hose with the
palm of the hand, and then exhaling
1. If the exhalation escapes at the edges of the
facepiece and does not go through the
exhalation valve, keep the low-pressure
hose sealed, press the facepiece against
your face, and exhale to free the valve
2. Use caution when exhaling against a sealed
facepiece in order to prevent discomfort
and possible damage to the inner ear from
exhaling forcefully
U. Connects the low-pressure hose to the regulator. Ifthe unit has a donning switch, turn it to the
PRESSURE, USE or ON position. If the unit does
not have a donning switch, open the mainline valve
V. Checks for positive pressure by gently breaking thefacepiece seal by inserting two fingers under the
edge of the facepiece
- You should be able to feel air moving past your
fingers. If you cannot feel air movement, remove
the unit and have it checked
IV. Alternate Coat method
A. Crouches or kneels at the end opposite the cylinder
valve
B. Checks the air cylinder gauge to ensure that the
cylinder is full
FOLLOW MANUFACTURER'S
INSTRUCTIONS
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PRESENTATION (STEP 2) INSTRUCTOR NOTES
C. Opens the cylinder valve slowly and listening for
the audible alarm as the system pressurizes
D. Fully opens the cylinder valve after the alarm
sounds
1. If the audible alarm does not sound, or if itsounds but does not stop, place the unit outof service by tagging it and notify an officer
E. Check the regulator gauge and cylinder gauge to
ensure that they read within 100 psi of the same
pressure
F. Spreads the straps out to their respective sides, and
positions the upper portion of the straps over the top
of the back plate
G. At the top of the facepiece harness, grasps the left
strap with your left hand; grasps the lower portion
of the same strap with their right hand. (NOTE:When kneeling at the cylinder valve end, the left
harness strap will be to their right)
H. Lift the unit; swing it around the left shoulder and
onto the back. Both hands should still be graspingthe shoulder strap
I. Continues to hold the strap with the left hand,
releases the right hand, and insert the right arm
between the right shoulder strap and the backpack
frame
J. Leans forward to balance the cylinder on their back
and then fastens the chest buckle, if the unit has a
chest strap
K. Continues leaning forward and tightens the shoulder
straps by pulling them outward and downward.
(NOTE: It is sometimes necessary to lean forward
with a quick jumping motion to properly position
the SCBA on the back while tightening the straps)
L. Fasten and adjust the waist strap until the unit fitssnugly
M. If the harness is a web-type, grasps the harness with
their thumbs through the straps from the inside, andspreads the straps
N. Pushes the top of the harness up the forehead to
remove hair that may be present between the
forehead and the sealing surface of the facepiece
O. Centers the chin in the chin cup and positions the
harness so that is centered at the rear of the head
P. Tightens the harness straps by pulling them evenlyand simultaneously to the rear, the lower straps first
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PRESENTATION (STEP 2) INSTRUCTOR NOTES
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PRESENTATION (STEP 2) INSTRUCTOR NOTES
Q. Repeats P with the temple straps
R. Repeats step P with the top straps
S. Checks the facepiece seal by exhaling deeply,
sealing the end of the low-pressure hose with your
bare hand, and inhaling slowly (not deeply),holding their breath for 10 seconds. (NOTE:Inhaling very quickly will temporarily seal any leak
and will give a false sense of a proper seal)
- If there is evidence of leaking, adjust or
redon the facepiece
T. Checks the exhalation valve by inhaling while
sealing the end of the low-pressure hose with the
palm of their hand, and then exhaling
1. If the exhalation escapes at the edges of the
facepiece and does not go through the
exhalation valve, keep the low-pressurehose sealed, press the facepiece against
your face, and exhale to free the valve
2. Use caution when exhaling against a sealed
facepiece in order to prevent discomfortand possible damage to the inner ear from
exhaling forcefully
U. Connects the low-pressure hose to the regulator. If
the unit has a donning switch, turn it to the
PRESSURE, USE or ON position. If the unit does
not have a donning switch, open the mainline valve
V. Checks for positive pressure by gently breaking the
facepiece seal by inserting two fingers under the
edge of the facepiece
1. You should be able to feel air moving past
your fingers. If you cannot feel air
movement, remove the unit and have it
checked
VI. Enroute
A. Opens the cylinder valve slowly and listens for the
audible alarm as the system pressurizes
B. Fully opens the cylinder valve after the alarmsounds
1. If the audible alarm does not sound, or if it
sounds but does not stop, place the unit out
of service by tagging it and notify an officer
C. Inserts the arms through the straps while sitting
with the seat belt on
D. Adjusts the straps for a snug fit
p. 102
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PRESENTATION (STEP 2) INSTRUCTOR NOTES
E. If the harness is a web-type, grasps the harness with
their thumbs through the straps from the inside, and
spreads the straps
F. Pushes the top of the harness up the forehead to
remove hair that may be present between the
forehead and the sealing surface of the facepiece
G. Centers the chin in the chin cup and positions the
harness so that is centered at the rear of the head
H. Tightens the harness straps by pulling them evenly
and simultaneously to the rear, the lower straps first
I. Repeats step H with the temple straps
J. Repeats step H with the top straps
K. Checks the facepiece seal by exhaling deeply,
sealing the end of the low-pressure hose with yourbare hand, and inhaling slowly (not deeply),
holding the breath for 10 seconds. (NOTE:
Inhaling very quickly will temporarily seal any leak
and will give a false sense of a proper seal)
1. If there is evidence of leaking, adjust or
redon the facepiece
L. Checks the exhalation valve by inhaling while
sealing the end of the low-pressure hose with the
palm of their hand, and then exhaling
1. If the exhalation escapes at the edges of the
facepiece and does not go through theexhalation valve, keep the low-pressure
hose sealed, press the facepiece against
your face, and exhale to free the valve
2. Use caution when exhaling against a sealed
facepiece in order to prevent discomfort
and possible damage to the inner ear from
exhaling forcefully
M. Checks for positive pressure by gently breaking the
facepiece seal by inserting two fingers under the
edge of the facepiece
1. You should be able to feel air moving past
your fingers. If you cannot feel air
movement, remove the unit and have it
checked
N. Connects the low-pressure hose to the regulator. If
the unit has a donning switch, turn it to the
PRESSURE, USE or ON position. If the unit does
not have a donning switch, open the mainline valve
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PRESENTATION (STEP 2) INSTRUCTOR NOTES
VII. Backup Mount
A. Uncovers the SCBA
B. Removes the facepiece and places it nearby
C. Opens the cylinder valve slowly and listens for the
audible alarm as the system pressurizes
D. Fully opens the cylinder valve after the alarm
sounds
1. If the audible alarm does not sound, or if it
sounds but does not stop, place the unit out
of service by tagging it and notify an officer
E. Check the regulator gauge and cylinder gauge to
ensure that they read within 100 psi of the same
F. Backs up against the cylinder back plate
G. Places the arms through the harness strapsH. Leans slightly forward to balance the unit on the
back, and releases the cylinder according to the
kind of mounting device
I. Steps forward to clear the unit from the mount
while fastening the chest buckle, if the unit has a
chest strap
J. Tightens the shoulder straps
K. Fastens and adjusts the waist strap until the unit fits
snugly
L. If the harness of the facepiece is a web-type, graspsthe harness with the thumbs through the straps from
the inside, and spreads the straps
M. Pushes the top of the harness up the forehead to
remove hair that may be present between the
forehead and the sealing surface of the facepiece
N. Centers the chin in the chin cup and positions the
harness so that is centered at the rear of the head
O. Tightens the harness straps by pulling them evenly
and simultaneously to the rear, lower straps first
P. Repeats step O with the temple strapsQ. Repeats step O with the top straps
R. Checks the facepiece seal by exhaling deeply,
sealing the end of the low-pressure hose with your
bare hand, and inhaling slowly (not deeply),
holding the breath for 10 seconds. (NOTE:
Inhaling very quickly will temporarily seal any leak
and will give a false sense of a proper seal)
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PRESENTATION (STEP 2) INSTRUCTOR NOTES
1. If there is evidence of leaking, adjust or
redon the facepiece
S. Checks the exhalation valve by inhaling while
sealing the end of the low-pressure hose with the
palm of the hand, and then exhaling
1. If the exhalation escapes at the edges of thefacepiece and does not go through the
exhalation valve, keep the low-pressure
hose sealed, press the facepiece against
your face, and exhale to free the valve
2. Use caution when exhaling against a sealed
facepiece in order to prevent discomfort
and ossible damage to the inner ear from
exhaling forcefully
T. Connects the low-pressure hose to the regulator
U. If the unit has a donning switch, turns it to thePRESSURE, USE or ON position. If the unit does
not have a donning switch, opens the mainline
valve
V. Checks for positive pressure. Gently break thefacepiece seal by inserting two fingers under the
edge of the facepiece. They should be able to feel
air moving past their fingers. If they cannot feel air
movement, remove the unit and have it checked
VII. Donning the facepiece
A. Regulator mounted facepiece
1. With the thumbs inserted through the
straps, grasp the head harness and spread
the webbing
2. Stabilizes the facepiece with one hand, and
uses the other hand to remove hair that may
be present between the forehead and the
sealing surface of the facepiece
3. Centers the chin in the chin cup and
positions the harness so that it is centered at
the rear of their head
4. Tightens the lower harness straps by
pulling them backward (not outward)
evenly and simultaneously
5. Repeats step 4 for the temple straps
p. 103
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PRESENTATION (STEP 2) INSTRUCTOR NOTES
6. Repeats step 4 for the top strap(s) if soequipped
7. If the SCBA is so equipped, checks the
regulator to ensure that the gasket is inplace around the regulator outlet port
8. If the regulator is separated from the
facepiece, attach it to the facepiece by
positioning it firmly into the facepiece
fitting
9. Locks it into place
10. Checks the facepiece seal
APPLICATION (Step #3): Have students practice until they do it correctly 3 times in a row.
LESSON SUMMARY: Have the students review the steps.
EVALUATION (Step #4): Have the students perform the skill. Record the results on the practical skill sheet.
Scba DONNING 1
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