SCBA Refresher Training SOP Updated Jan 2008

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1.1. IntroductionIntroduction2.2. Parts & SpecificationsParts & Specifications3.3. Visual InspectionVisual Inspection4.4. BA Donning ProcedureBA Donning Procedure5.5. Additional NotesAdditional Notes

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1. Introduction1. Introduction

SelfSelf--Contained Breathing Apparatus (SCBA) is a common piece of Contained Breathing Apparatus (SCBA) is a common piece of respiratory protective equipment used by fire fighters and rescurespiratory protective equipment used by fire fighters and rescuers. ers.

To enable the user to work in environment that does not supportTo enable the user to work in environment that does not supportatmospheric breathing such as those affected by:atmospheric breathing such as those affected by:--

High Temperature (e.g. Fire scenes)High Temperature (e.g. Fire scenes)Oxygen DeficiencyOxygen DeficiencyToxic Gas & FumesToxic Gas & FumesSmoke & other Irritants Smoke & other Irritants

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2. Parts & Specifications2. Parts & SpecificationsBA Carrying Bag

HP/MP Reducer Valve

Waist Belt

Cylinder Strap

Shoulder Strap

Lung Demand Valve

Warning Whistle

Medium Pressure Hose

Main Cylinder Valve

Dual Hose HP/MP

Face Mask

Pressure Gauge

Compressed Air Cylinder

Bypass Button

Back-Plate or Carry Frame

Mask StrapsAir Klic Coupling

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2. Parts & Specifications2. Parts & Specifications

•• HP/MP Reducer ValveHP/MP Reducer Valve

High pressure air supplied from the cylinder is High pressure air supplied from the cylinder is reduced to a breathable pressure via a pressure reduced to a breathable pressure via a pressure reducer.reducer.

•• Main Cylinder ValveMain Cylinder Valve

Supply valve for the compressed air, to be either Supply valve for the compressed air, to be either fully on or fully off. Check this valve while working at fully on or fully off. Check this valve while working at times as it could be turned off slowly when times as it could be turned off slowly when maneuvering in tight areas where the valve suffer maneuvering in tight areas where the valve suffer from knocks.from knocks.

•• Face MaskFace Mask

Facemask is fitted with inner mask to reduce Facemask is fitted with inner mask to reduce possibility of fogging. Wearer is to don facemask in possibility of fogging. Wearer is to don facemask in

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2. Parts & Specifications2. Parts & Specifications•• Lung Demand ValveLung Demand Valve

To be fitted to the facemask to supply safe and To be fitted to the facemask to supply safe and breathable air to the wearer. Comes with a bypass breathable air to the wearer. Comes with a bypass button for use when more air is needed. Ensure lung button for use when more air is needed. Ensure lung demand valve is fitted properly into the slot on the demand valve is fitted properly into the slot on the facemask.facemask.

•• Working Pressure Gauge and Warning WhistleWorking Pressure Gauge and Warning Whistle

The pressure gauge shows the amount of The pressure gauge shows the amount of compressed air left in the Air Cylinder whereas the compressed air left in the Air Cylinder whereas the warning whistle is used as an indication to the warning whistle is used as an indication to the wearer when Air Cylinder pressure drops below 55 wearer when Air Cylinder pressure drops below 55 bar into the red zone where contents of Cylinder is bar into the red zone where contents of Cylinder is only limited to 10 minutes of usage.only limited to 10 minutes of usage.

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TypeType : Open Circuit Set: Open Circuit SetCylinder Content : 6 Cylinder Content : 6 litreslitresPressurePressure : 200 bars: 200 barsFull DurationFull Duration : 30 : 30 minsminsWorking Duration : 20 Working Duration : 20 minsmins (Operational Zone (Operational Zone –– above 55bar)above 55bar)Safety MarginSafety Margin : 10 : 10 minsmins ((Red zoneRed zone –– 55bar and below)55bar and below)WeightWeight : kg: kgWhistle SettingWhistle Setting : 55 bar: 55 bar

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•• Factors affecting Consumption RateFactors affecting Consumption Rate

Fitness level of wearerFitness level of wearerDifficulty in maneuvering in constrained and tight Difficulty in maneuvering in constrained and tight areaareaWeather conditionWeather conditionAdaptability in donning of BA setAdaptability in donning of BA set

Note: Working capacity of air cylinder varies Note: Working capacity of air cylinder varies considerably according to wearerconsiderably according to wearer’’s lung s lung capacity and amount of work done.capacity and amount of work done.

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3. Visual Inspection3. Visual Inspection

•• Face MaskFace Mask

Rubber deterioration, cracks, tears, holes, tackiness.Rubber deterioration, cracks, tears, holes, tackiness.•• Head HarnessHead Harness

Missing straps, loss of elasticity, buckles deformed.Missing straps, loss of elasticity, buckles deformed.•• LensLens

Cracks, loss of tightness to face piece.Cracks, loss of tightness to face piece.•• HosesHoses

Cuts, cracks, abrasions, wrinkles, loose or Cuts, cracks, abrasions, wrinkles, loose or inoperative connections.inoperative connections.

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1. Place the breathing apparatus in a vertical position, with cylinder valve face down and loosen shoulder straps as much as possible.

Cylinder Valve

4. SCBA Donning Procedure4. SCBA Donning Procedure

Shoulder Straps

2. Perform ‘Pressure Gauge Test’. Fully turn on main supply valve. Check pressure gauge and ensure pressure is around 200bar, at least between 170 to 200bar. Change to another BA set if does not meet minimum pressure.

Pressure at 170-200bar

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No drop in pressure

3. Perform ‘Pressure Drop Test’. Off the Main Cylinder Valve and monitor the pressure gauge. The pressure should maintain and should not drop more than 10bar/minute. Leakage is present if pressure drop is more than 10bar/minute. Change to another BA set and send damage set for repair.

4. Perform ‘Whistle Test’. With the Main Supply Valve switched off, slowly purge the air by pressing the Lung Demand Valve and monitor the pressure gauge as the air is released. The whistle should start to sound when the pressure reach the red zone (about 55bar) as indicated on the pressure gauge.

Whistle

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5. Place breathing apparatus on the back by passing the first arm through the shoulder strap, follow by the second arm.

5. Grab the back plate by the carrying handle with both hands and carefully lift the BA set over and behind your head. Both elbows should go through shoulder straps.

OR

6. Adjust shoulder straps by pulling down on the strap ends until the BA set is suspended comfortably between your shoulders and fasten and tighten the Waist belt.

Shoulder StrapsWaist Belt

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7. Loosen all the mask straps by tinkering the straps and use both hands to open up the face mask. Pull the face mask over the head and let it rest comfortably.

8. Tighten the two lower mask straps by pulling it backwards and outwards. Then tighten the two upper mask straps. If necessary, adjust the top strap to ensure no leak is present.


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9. Check the mask for leaks by taking a deep breath while sealing the Air Kliccoupling with the hand. The mask should fit tightly to the face. Turn fully on the main cylinder valve and check the pressure gauge again, ensure it is between 170 to 200 bar.

Pressure Gauge

10. Fit lung demand valve into the face mask coupling, you should hear a ‘click’ sound to ensure lung demand valve is fitted in. Wearer should be able to breathe normally. Again check the mask for leaks. To do so, stop breathing and make sure that no leaking sound is heard.


Main Cylinder Valve

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12. Perform ‘Vacuum Test’. Turn off the main cylinder valve. Without any air supply, the mask should be sucked in when wearer breathe in hard. This is to confirm there is no leakage in the facemask. If wearer still able to breathe normally, check facemask for leakage.


11. Perform ‘Leakage Test’ Create a small gap on the facemask by lifting the mask at one side using 2 fingers. Air from the lung demand valve should be gushing out to supply more air. If there is no additional air gushing out, change to another BA set and send damage set for repair.

Main Cylinder Valve

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13. In the event of a leak, readjust the mask straps. If leak persists, have the breathing apparatus checked.

14. With no leak and BA set donned, wearer is ready for operation.

NOTE: Do check main cylinder valve at times to ensure it is not turned off due to knocking while maneuvering.


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Special Protective Suit and footwear should be worn for entering corrosive/toxic environment (gases or splashing of Chemicals)


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Summary of 5 TestSummary of 5 Test

Before Putting on BA setBefore Putting on BA set•• Visual CheckVisual Check

Test 1 to 3Test 1 to 3•• Pressure Gauge Test to check capacity Pressure Gauge Test to check capacity

>170 bar >170 bar --action action -- open main valveopen main valve

•• Pressure Drop Test to check piping Pressure Drop Test to check piping and joints has no leakand joints has no leak-- action action -- close close main valve see drop < 10 bar per minmain valve see drop < 10 bar per min

•• Whistle Test to check low alarm is Whistle Test to check low alarm is working working –– action action -- close main valve close main valve and depress lung demand valveand depress lung demand valve

•• After Putting on BAAfter Putting on BA

Test 4 to 5Test 4 to 5•• Face Mask Positive Pressure Test to Face Mask Positive Pressure Test to

check no outside air leak into your check no outside air leak into your mask mask –– action use 2 fingers and to lift action use 2 fingers and to lift the mask and ensure air gush out.the mask and ensure air gush out.

•• Face Mask Vacuum Test to check no Face Mask Vacuum Test to check no leakage in the face mask leakage in the face mask –– action action ––close main valve and ensure mask is close main valve and ensure mask is suck inwards.suck inwards.

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TIP from OHSTIP from OHS•• All gear should be ready, set head & temple strap 2 All gear should be ready, set head & temple strap 2

inch. Just need to pull chine strap it fit faster.inch. Just need to pull chine strap it fit faster.•• Store cylinder upright so water vapor can purge out.Store cylinder upright so water vapor can purge out.•• Check >160 bar (80 %)Check >160 bar (80 %)•• Pressure drop and whistle test OKPressure drop and whistle test OK•• Mask check, wriggle to fit betterMask check, wriggle to fit better•• Out of breath, do 5 deep breath Out of breath, do 5 deep breath abdabd hold each for 5 hold each for 5

seconds to flush yourself with oxygen.seconds to flush yourself with oxygen.•• Comb procedure, sweep hand and stamp left leg then Comb procedure, sweep hand and stamp left leg then

walk, follow by right hand/leg.walk, follow by right hand/leg.•• Entrapment Entrapment –– sit down, rest and tap wall to sound sit down, rest and tap wall to sound

alarm slowly.alarm slowly.

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•• SCBA equipment are placed in either a carrying bag in ES Lab SCBA equipment are placed in either a carrying bag in ES Lab (N3.1(N3.1--B3MB3M--01) or in a cabinet in PEN Centre (N301) or in a cabinet in PEN Centre (N3--B4cB4c--03).03).

5. Additional Notes5. Additional Notes

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•• Servicing of SCBA set is to be done every half year after every Servicing of SCBA set is to be done every half year after every practice or after being used to make sure they are operational practice or after being used to make sure they are operational ready.ready.

Jun/Dec practice Top up for next practice or use

5. Additional Notes5. Additional Notes

•• Contact the below vendor to obtain quotation for all Contact the below vendor to obtain quotation for all FenzyFenzySCBA consumables and topSCBA consumables and top--up.up.

Noah Agencies Noah Agencies ““NN”” Marine Services Pte LtdMarine Services Pte Ltd20 20 TuasTuas Avenue 3Avenue 3Singapore 639416Singapore 639416Tel : 6266 0788Tel : 6266 0788Fax : 6266 1042Fax : 6266 1042

SCBA Refresher Training SOP Updated Jan 2008

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Transcript of SCBA Refresher Training SOP Updated Jan 2008