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Chapter 2
Cylinder and Components

SAFETY FIRS T

Edition 1 – December 2019

MSA G1 Classic Breathing Apparatus

Carrying cylinders

As noted above cylinders must not be carried by the handwheel. Carrying a cylinder by

the handwheel places undue stress on the valve mechanism. If removing a cylinder

from a horizontal shelf, while hanging on to the handwheel, the weight of the cylinder

can cause it to rotate downward, causing the valve to open slightly.

To carry a cylinder, it can be by cradled cradling in your arms or by holding the body of

the valve.

Figure 4

– carrying a cylinder

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Summary of Contents for MSA G1

Page 1: ...This manual is published for use within CFA in conjunction with participation in a course of instruction It has been developed having regard to current CFA occupational health and safety guidelines a...

Page 2: ...and comply w ith the other licence terms The licence does not apply to any branding including Country Fire Authority CFA and Government logos any photographs and images and any content supplied by thi...

Page 3: ...ty Measures 10 Chapter 2 Cylinder and Components 13 Cylinder 13 MSA G1 Classic BA 19 Components 20 Chapter 3 Operation 39 Functional Pre Operational Check 39 Visual Inspection 39 Changing the Cylinder...

Page 4: ...Contents ii SAFETY FIRST Edition 1 December 2019 MSA G1 Classic Breathing Apparatus Cleaning of Facemask 88 Cleaning the DSU 92 Storage of the BA 92 Abbreviations 93 Acknowledgements 93...

Page 5: ...types An additional safety feature of the MSA G1 Classic BA is the ability to attach through a buddy breathing line to other users The MSA G1 Classic BA facemask has been designed with a speech diaphr...

Page 6: ...fter use care maintenance It also contains a list of abbreviations Awareness of MSA G1 Electronic BA Deployment Throughout Victoria there are two MSA G1 BA sets being utilised the MSA G1 Electronic MS...

Page 7: ...le allows for a personalised fit clearer communications and improved vision The MSA G1 C and MSA G1 E have the same buddy breathing manifold enabling the different sets to connect to each other in the...

Page 8: ...at 100 bar Series of different electronic alarms Stand alone distress signal unit DSU Gauge Analogue Digital and analogue Procedures and Fire GroundPractices The procedures and Fire Ground Practices F...

Page 9: ...ly your learning Other manuals and documentation that relate to this equipment are conversion package PowerPoint for MSA G1 C MSA G1 C BA System Operating Manual MSA G1 Facepiece Operating Manual 300...

Page 10: ...____________________________________________________________________ ______________________________________________________________________ ____________________________________________________________...

Page 11: ...thing apparatus used in irrespirable atmospheres Some of the terms include self contained compressed air breathing apparatus SCBA compressed air breathing apparatus CABA or breathing apparatus BA This...

Page 12: ...tus It operates independently from the ambient air in atmospheres immediately dangerous to life or health IDLH Breathable air is supplied to the operator from a compressed air cylinder via a pressure...

Page 13: ...4 mm Housing Over moulded 2K Silicone Version Activated by ON OFF key Audio output Main alarm 95 dB at 3 metres Operating temperature 20 C to 55 C Visual alarm Two bright red flashing LEDs for motion...

Page 14: ...with Australian Standards and National Regulations when filling cylinders Safe person approach dynamicrisk assessment Operators must apply the principles of Dynamic Risk Assessment outlined in Joint...

Page 15: ...under crucial circumstances it will operate in water to a depth of 1 metre Personal Flotation Devices PFD must be used in conjunction with BA for all marine and waterway emergencies and for firefighti...

Page 16: ..._______________________________ ______________________________________________________________________ ______________________________________________________________________ __________________________...

Page 17: ...s chapter contains information about the general principals of operation cylinder cylinder carriage and MSA G1 C BA components Cylinder The compressed air cylinder used with the G1 C BA is a carbon wr...

Page 18: ...sing the valve and a threaded high pressure connection The 300 bar cylinder has a right angle valve ratcheting cylinder valve excess flow valve burst disc a vent hole in the threaded section to protec...

Page 19: ...nt hole is located in the threaded section of 300 bar cylinder valves to protect 200 bar pressure reducers Safe workingpractices The cylinder meets all relevant Australian standards Do not drop the cy...

Page 20: ...it is outside the hydrostatic testing date Misuse can result in serious injury or death Breathing apparatus cylinders should be fully recharged as soon as possible after use Always leave some pressur...

Page 21: ...ges that have penetrated to the carbon fibres or other evidence of significant damage If there is any doubt about the suitability of the cylinder for recharge return it to the State PPE C Management C...

Page 22: ...eel Carrying a cylinder by the handwheel places undue stress on the valve mechanism If removing a cylinder from a horizontal shelf while hanging on to the handwheel the weight of the cylinder can caus...

Page 23: ...he MSA G1 C has three passive radio frequency identifier RFID chips located throughout the set These chips are indicated by the RFID symbol The RFID chips are located in the follow areas facemask bott...

Page 24: ...ame The carrier frame consists of the following components a dragging handle two carry handles 180 kg one on each side passive radio frequency identifier RFID which can be used for asset management pu...

Page 25: ...he dragging handle and the carry handle are only to be used for rescue of the wearing operator It is not to be used as a harness during roping operations or as a raising and lowering device Figure 7 M...

Page 26: ...tal fitting attachments for harness to carrier frame metal adjustment buckles broad straps with friction pads to keep the shoulder straps from falling off the shoulders three attachment points adjusta...

Page 27: ...ng for easier cleaning The shoulder straps are independently tightened using double pull straps The tunnels on these straps are accessed by opening the directional press studs The serviceable shoulder...

Page 28: ...ns Swivelheight adjustable lumber support A height adjustable lumbar support provides three easily adjusted operator positions for ideal comfort and correct fit The swivel feature allows the harness a...

Page 29: ...the facemask Pressurereducer The pressure reducer reduces the cylinder pressure 300 bar to a medium pressure which is in the range of 6 to 8 bar The medium pressure is further reduced by the demand va...

Page 30: ...r valve and continue breathing to relieve all air pressure and open the cylinder valve slowly to see if the pressure relief valve is still operating If the relief valve is still operating withdraw the...

Page 31: ...ntinuous warning signal when the cylinder pressure drops below 55 5 bar Activation of the low pressure warning whistle indicates to the operator that they have approximately six minutes of breathable...

Page 32: ...ressure in the facemask while the BA is in use The demand valve is connected to the facemask via a fixed position push to connect PCT connection and disconnected from the facemask by simultaneously pr...

Page 33: ...k provides breathable air from the demand valve through an inhalation valve to the inside of the visor and then through the one way check valves into the nose cup Exhaled air is directed out of the ex...

Page 34: ...with one hand The mask design allows for optimised airflow to avoid the mask fogging The incorporated spring loaded exhalation valve assists with direct flow of exhaled breath to the atmosphere Figur...

Page 35: ...Facemask head harness The facemask has a 5 point rubber head harness To secure the mask to the wearer adjustment tabs are tightened by starting with the two lower tabs chin straps then middle tabs te...

Page 36: ...for information regarding Facemask Fitment Procedure Pressuregauge The pressure gauge provides the operator with an accurate reading of how much pressure in bar is left in the cylinder The glow in the...

Page 37: ...ut is the distress signal unit DSU fitted to MSA G1 C BA It is designed to detect when the operator stops moving resulting in the activation of a two stage automatic audible and visual alarm The audib...

Page 38: ...t for the operator but is designed to protect the equipment The operator must continue to assess the working environment through situational awareness of fire behaviour If the internal temperature of...

Page 39: ...comes disoriented or lost The buddy breather system is stored in a pouch fitted to the left waist belt that is fastened shut with two press studs The following are notable features Quick connect with...

Page 40: ...ere the two sets reach the same pressure the air will be consumed from both cylinders at an equal rate For example if the provider has 200 bar and the receiver has 50 bar then during buddy breathing t...

Page 41: ...ss being utilised for decontamination purposes or during hazardous materials operations the buddy breathing line is a last resort Through constant communications ongoing DRA and situational awareness...

Page 42: ...____________________________________ ____________________________________________________________________ ____________________________________________________________________ _________________________...

Page 43: ...function test is unsuccessful it is damaged or suspected damage is identified the BA is not functioning according to the instructions or training Visual Inspection If the BA does not function properly...

Page 44: ...stickiness signs of heat or chemical related damage or other visible signs of damage 1 2 Inspect all straps shoulder straps pull straps waist belt waist straps facemask head harness for tears cuts we...

Page 45: ...facemask inlet for damage Ensure the inhalation valves are in place 2 5 Inspect the nose cup mask to check the valve is in place it is correctly orientated and is secured to the component housing 3 D...

Page 46: ...re no scratches or gouges are affecting the carbon fibres and that the valve is in alignment as per chapter 2 Observe procedures for inspection intervals 6 Carrier frame 6 1 Inspect the cylinder retai...

Page 47: ...Release air pressure fromset 1 1 Ensure a clean environment 1 2 Check the cylinder valve is closed 1 3 Depress the PURGE button to release any pressure still in set 1 4 Place BA in PARK by depressing...

Page 48: ...ure reducer by rotating the green cylinder handwheel If difficulty is encountered while unscrewing the cylinder check that all the air has been released then place a hand under the top of the cylinder...

Page 49: ...ard to get out twisting it may help 4 Replace the charged cylinder 4 1 Slide the cylinder under the retaining strap 4 2 Check that the O rings on the pressure reducer are present 4 3 Align and connect...

Page 50: ...the cylinder and the strap 4 6 Close the buckle by pressing it down until an audible click is heard 4 7 Ensure the Velcro strap is threaded through the ring and looped back over the buckle to re atta...

Page 51: ...e cylinder off by pulling the cylinder valve out and turning it to the OFF position 5 6 Monitor the pressure gauge for one minute The pressure should not fall more than 10 bar in one minute If test fa...

Page 52: ...he functional test is carried out after each wear of the BA a minimum of weekly or at change of shift The functional checks should be conducted with a full cylinder If the BA does not function properl...

Page 53: ...tangled and are at full extension 1 4 Slide the waist support belt up and down and leave it in the required position for maximum comfort 2 High pressure test 2 1 Connect a cylinder if required as per...

Page 54: ...pressure gauge for one minute to ensure the pressure in the BA does not drop more than 10 bar If test fails release the pressure in the BA set by operating the PURGE button which is located on the fro...

Page 55: ...PARK 4 Restow the BA 4 1 Place the facemask in the mask bag 4 2 Ensure the tally tag is on the BA and check that the details on the tally tag match the BA set 5 Check the MSA Motion Scout DSU 5 1 Turn...

Page 56: ...ve that it goes through the first alarm and into the second alarm after approximately 40 seconds 5 5 Cancel the second alarm Press the MANUAL ALARM button twice within one second 5 6 Activate the MANU...

Page 57: ...ing This chapter contains information about flash hood don the BA set distress signal unit post incident wash down doff the BA set doff the flash hood and emergency shared air procedure buddy breathin...

Page 58: ...Follow these steps to do the flash hood Step Description Photos 1 Don structural bushfire trousers 1 1 Pull on structural bushfire trousers 2 Don flash hood 2 1 Put the flash hood on so that the open...

Page 59: ...paratus Step Description Photos 2 3 Ensure the bib of the hood is neatly positioned onto the chest shoulders and upper back 2 4 Don the structural bushfire jacket fully closing the front zip 2 5 Raise...

Page 60: ...head so that it is sitting over the jacket collar 2 8 If required roll the front of the flash hood below the chin over the collar 2 9 Double check the flash hood is still tucked into the jacket 3 Don...

Page 61: ...g with the side of the mask ensuring there are no gaps present between the mask and the flash hood 4 3 Ensure the flash hood does not interfere with the facemask seal or obstruct the visor 5 Continue...

Page 62: ...ial hair will prevent a correct seal from being achieved The facemask seal must be checked before each use The nose cup must be installed correctly in the facemask In order to guarantee a proper fit f...

Page 63: ...tests Complete the following steps to don the BA and facemask Step Description Photos 1 Prepare to don the BA 1 1 Ensure the donning process is undertaken in a clean air environment 1 2 Check PPC is...

Page 64: ...e lumber support belt to the required height position for maximum comfort 2 Don the BA harness with cylinder fitted The following steps need to be completed in 100 seconds if you have been issued with...

Page 65: ...the right shoulder strap The right strap contains the pressure gauge 2 3 Ensure the shoulder straps have no twists 2 4 Fasten the chest strap Adjust and tighten as required ensuring it is under the me...

Page 66: ...ht 2 9 Fasten the waist belt Reach around to the hips locate the tabs and pull forward to tighten Most of the BA weight should be carried on the hips To adjust the lumber support height while wearing...

Page 67: ...and lay flat across the body 2 11 Check the tally tag is attached to the left shoulder strap spring clip 3 Check cylinder pressure 3 1 Place the set into PARK Push the red button on the underside of t...

Page 68: ...ssic Breathing Apparatus Step Description Photos 3 3 Check the cylinder pressure is at or above 250 bar For stowage on appliances and to commence operations the pressure in the cylinder must be 250 ba...

Page 69: ...the face 5 Check facemask seal 5 1 Start breathing to activate first breath mechanism 5 2 Take two or three breaths 5 3 Hold the breath 5 4 Listen for audible leaks If there is no air flowing a posit...

Page 70: ...mentary air supply 6 1 Push the PURGE button at the front of the demand valve 6 2 An audible flow of air should be heard and felt entering the mask The PURGE button should reset after being released a...

Page 71: ...d the tally tag to BA Control Entry Officer 7 4 Turn on the DSU For the MSA Motion Scout DSU refer to the Operating the DSU procedure 7 5 Fit the gloves If the BA passes all tests it is ready for use...

Page 72: ...or a two second test period The status LEDs flash to indicate that the instrument is switched on No movement When the operator remains motionless for approximately 25 seconds a series of pre alarm war...

Page 73: ...What How Photos Manual operation Press the manual ALARM button Switch off Push the ON OFF and then ALARM buttons for a minimum of four seconds at the same time Battery at end of life A short acoustic...

Page 74: ...or training ground to minimise potential operator exposures to harmful substances This is done by removing as much contamination and soil from PPC PPE as practicable and minimising the potential expos...

Page 75: ...has occurred Follow these steps to remove the BA Step Description Photos 1 Remove the ancillary equipment 1 1 Ensure it is a clean air environment COLD zone and the required post incident wash down h...

Page 76: ...down 2 1 Take a breath and hold 2 2 Place the BA in PARK mode Depress the red PARK button on the bottom side of the demand valve 2 3 Release the bottom head harness straps Tilt the harness buckles tow...

Page 77: ...ylinder off 2 6 Bleed the pressure down Press the PURGE button on the front of the demand valve 2 7 Retrieve the tally tag from the BA Control Entry Officer 2 8 Turn off the DSU Press and hold ON OFF...

Page 78: ...cription Photos 3 2 Undo the chest strap 3 3 Loosen the shoulder straps by lifting the shoulder buckles up and back toward the shoulders 3 4 Remove the neck strap from around the neck Maintain control...

Page 79: ...houlder strap Decontaminate BA on site if required If the BA does not need to be decontaminated on site make sure it is identified so that it can be recommissioned back at the station or training grou...

Page 80: ...Apparatus Step Description Photos 4 2 Lengthen all straps on the harness and facemask to their full extent Decontaminate set on site if required If the set does not need to be decontaminated on site...

Page 81: ...Step Description Photos 1 Follow the Doff BA procedure to Step 1 4 in chapter 4 2 Remove the facemask and the BA 2 1 At the temple slide the fingers under the flash hood 2 2 Slide the face opening ba...

Page 82: ...Classic Breathing Apparatus Step Description Photos 4 2 Slip the hands inside the flash hood and lift up and away from the face 4 3 Inspect flash hood for damage Arrange for cleaning if required Flas...

Page 83: ...or locate the provider as quickly as possible and execute a shared air buddy breathing connection Before commencing an emergency shared air procedure the air provider must establish that there is a s...

Page 84: ...hold for two seconds and as soon as possible press the PRESS to TALK key to transmit the following information 2 MAYDAY MAYDAY MAYDAY 3 Your call sign 4 Your location 5 A summary of the situation 6 W...

Page 85: ...st cover 2 4 The provider lets their buddy breathing hose hang by their side 2 5 The provider locates the waist mounted storage pouch on the left waist belt of the air receiver Open the press studs an...

Page 86: ...to the receiver s female quick connect coupling with a single action 2 9 Check that the buddy hose is properly routed and not tangled with any other part of the apparatus for example neck strap chest...

Page 87: ...to exit immediately or If unable to exit remaining in place to wait for rescue and providing further details on situation 3 2 Upon reaching a safe fresh air environment cold zone uncouple the receiver...

Page 88: ...sk of both the provider and receiver exhausting their air supplies is a possibility associated with buddy breathing What starts out as a rescuer victim relationship ends up a victim victim relationshi...

Page 89: ...y by the State PPE C Management Centre Inspection and service records must be maintained Changes to devices or components are not permitted Operators must inspect the entire BA after it has been clean...

Page 90: ...the water used for cleaning must not exceed 43 C Do not use chemical cleaning as it will damage the foam fillings Clean hoses pressure reducer and pressure gauge by hand Keep the hoses connected to th...

Page 91: ...PPC breathing air from the cylinder 1 3 Flush with clear flowing water to remove large contaminates Do not use fine point high pressure water streams to clean the BA set 1 4 Clean hoses cylinder valv...

Page 92: ...remove any obvious signs of contamination e g ash This can be achieved by hosing down the operator with a light spray on the incident ground while they are still on air but in the COLD zone If the fa...

Page 93: ...s required before use See Approved Mixing Ratios Mix BioGuard in a suitable and clean vessel such as a bucket sink or container Completely submerge the mask for 10 minutes Agitate if possible Do not e...

Page 94: ...e correct orientation The nose cup is fitted correctly when it is flush with the speech diaphragm and has a good seal at 360 the inhalation valve is free to move and operate correctly the nose cup not...

Page 95: ...gloves to handle BioGuard especially when agitating in the solution Avoid splashing the solution during cleaning and rinsing Clean up any spills Keep out of eyes and mouth Avoid skin contact Eyes If c...

Page 96: ...ces that will or might attack any part of it causing it to not perform as designed and approved Prior to storing the BA in a seat bracket ensure there is no interference between the BA and the seat En...

Page 97: ...rew Leader DSU distress signal unit G1 C MSA G1 Classic self contained breathing apparatus IC Incident Controller PFD personal floatation device PPE Personal protective equipment clothing PTC push to...

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