BA & Related Ancillary Equipment

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BA & RELATED ANCILLARY EQUIPMENT

PERSONAL LINE POUCH

Sabre Centurion-Duo compressed air breathing apparatus sets are in use within the Brigade.

All maintenance, testing and repair must be carried out in accordance with this instruction.

Each Breathing Apparatus (BA) set is individually numbered in accordance with the Brigade identification system.

A system of one for one exchange of defective Breathing Apparatus sets precludes the need for Station identification, therefore, sets will not be marked in any other way than as detailed above.
Every set has an individual log book. Each log book is specific to a Breathing Apparatus set and is not interchangeable with any other set (see Maintenance and Testing). Station Commanders should ensure that all log books are examined at frequent intervals.

The Set is a version of the standard Centurion self contained breathing apparatus designed to be used in either single or twin cylinder configuration with conversion requiring the minimum of adjustment without the need for tools.

The apparatus is certified to European Standard EN137 for self contained breathing apparatus and has been issued with a 'CE' mark. It is a self contained, open circuit, compressed air breathing set using a two stage pneumatic system with an automatic, positive pressure demand valve.

The apparatus configuration comprises a facemask, a stainless steel backplate with fully adjustable flame retardant body harness, two stage pneumatic system with automatic pressure reducer and compact demand valve.

High pressure air from the cylinder(s) is fed through the cylinder connector hose assembly to the first stage pressure reducer. The connector(s) incorporates a sintered bronze filter to prevent dirt and debris from entering the pneumatic system. High pressure air is fed to the shoulder mounted, combined pressure gauge and warning whistle assembly.

The facemask incorporates a speech transmission diaphragm and fixed ori-nasal inner mask.

Backplate

The backplate is made from stainless steel for durability and life long corrosion resistance. The cylinder is fixed to the backplate by a fully adjustable locking buckle system with Velcro fastenings. This enables single or twin cylinders with protective cover(s) to be accommodated.

Harness

The harness is made from flame retardant polyester webbing and features closed cell foam padding on the shoulders for added comfort and is fully adjustable. Pivoting side arms on the waist belt help support the weight of the apparatus across the hips without restricting wearer movement.

High Pressure Hoses

All high pressure hoses are made from TEFZEL lined braided stainless steel with a Hytrel sleeving. Minimum test bursting pressure is 896 bar.

Facemask Panaseal Left Quick Fit (LQF)

The facemask is constructed in black non-dermatitic neoprene and is retained using a fully adjustable five point head harness. The demand valve is connected to the facemask with a Quick Fit bayonet fitting and locking catch. The mask is certified to EN 136 for use with positive pressure breathing apparatus.

The mask incorporates a fixed inner mask to reduce carbon dioxide 'dead space' and to prevent misting of the visor, and a speech diaphragm.

The visor is made from polycarbonate and meets the requirements of BS 2092 type 1 for impact resistance and optical clarity.

Demand Valve

The demand valve uses a servo-assisted, tilting diaphragm mechanism to regulate the airflow and to maintain positive pressure within the facepiece when used in conjunction with the facemask mounted, spring loaded exhalation valve.

The demand valve incorporates a first breath actuation mechanism to facilitate donning and testing procedures.

A bypass or supplementary flow device provides a continuous flow of air into the facepiece, independent of the operation of the demand valve.

Contents Gauge and Whistle

The combined whistle and pressure gauge is fed via a high pressure hose from the pressure reducer high pressure outlet.

The warning whistle is set to operate at 55 bar plus or minus 5 bar and will consume air at 1.89 litres per minute when sounding.

The whistle sounds when a stream of high pressure air is directed over the whistle flute. It is therefore important that the flute is unobstructed and that debris is not allowed to enter the flute as this may seriously impair the whistle function.

The pressure gauge is a bourdon type dial indicator.

The gauge mechanism is housed within a water and impact resistant stainless steel case with a shatterproof polycarbonate lens.

The gauge features luminescent face markings for improved legibility in poor light conditions. A rubber shroud provides additional protection.

Pressure Reducer

The pressure reducer is completely automatic in operation and requires no adjustment.
A restrictor within the reducer body prevents air loss in excess of 25 litres per minute should the gauge whistle or hose become damaged.

A pressure relief valve prevents over pressurisation of the low pressure breathing circuit, safely venting to atmosphere without causing damage to the breathing apparatus set or presenting a hazard to the wearer.

Decontamination/Emergency Attachment and Auxiliary Reducer

Each pumping appliance carries an auxiliary reducer and a dedicated 3 metre length of medium pressure hose.

A second cylinder can be attached to the set via this attachment. Once connected and the second cylinder is fully opened, the cylinder on the set is to be closed down.

Note: This is not a decant facility .

A red dust cap is fitted to prevent the ingress of dirt into the hose whilst it is disconnected. An integral filter prevents the ingress of dirt into the pneumatic system.

Cylinder

The cylinder is constructed from carbon fibres spun around an aluminium liner then encased in glass fibre resin. All cylinders used within the Brigade are certified to HSE/AL-FW2, and are charged to a maximum of 300 bar. The maximum air capacity is 1836 litres.

ANCILLARY EQUIPMENT
AUTOMATIC DISTRESS SIGNAL UNIT (ADSU)

General

The ADSU is fully automatic in operation with a manual override. It is a self-contained unit powered by a 9v battery. It will be worn to the left hand side of the wearer in the holder provided.
The ADSU incorporates a highly sensitive movement sensor which sends a positive signal until movement stops. If the wearer remains still for more than 20 seconds the ADSU will sound a one tone alarm for 8 seconds. To reset the unit, the wearer should move the ADSU.

An operating key is attached to the BA tally. To operate the ADSU:

Turn the key a quarter turn CLOCKWISE and then remove it. The unit is now armed. The ADSU will emit a pre-alarm. Movement of the unit will cancel the alarm.

The full alarm will sound if there is no movement.

This can only be cancelled by using the key.

To operate manually, depress the button. To cancel, reset with the key.

Turn off by replacing the key and rotate a quarter turn, anti clockwise.

A LOW BATTERY WARNING signal is incorporated which will sound a short beep every 5 seconds when the battery power drops to 7.55v.

The battery in the unit should be exchanged when the low battery warning signal activates. An Allan key issued to stations is to be used to open the battery compartment.

A station stock of 2 batteries should be kept for this purpose. Additional batteries should be obtained from the Supplies Section.

Note: The unit will operate for one hour at full alarm when the low battery warning sounds.

Defective units will be exchanged on a one for one basis from one of the designated holding stations , Pudsey, Dewsbury or Halifax. Alternatively, stations may change defective units with the courier service or via the Training Centre fireground assistants (0900-1700 hours weekdays).

For identification, the ADSU serial number will be used.

Dimensions 55mm x 50mm x 95mm
Weight 165gm (with battery 210gm)
Audio Output 98dBA at 3 metres
Frequency Range 2.6Khz - 3.0Khz

Alarm Sound 3 Upward tones followed by a pause
LED Indicator Approx 3 seconds alternately front and side
Pre Alarm Intermittent 2Hz (reduced sound volume)
Battery MN 1604 Alkaline type
Battery Life 5 Hours (full alarm)
Low Battery Warning Short 'beep' every 5 seconds

PERSONAL LINE

The personal line should be 6 metres in length with a 'D' ring attached to the line 1.25 metres from the running end. When the line is stowed in the pouch, the 'D' ring should be attached to the tenax clip and the 4.75 metre length placed in the rear section of the pouch. The 1.25 metre length is stowed in the front section with the hook in the pocket provided.

Personal lines should be tested in accordance with the Home Office Technical Bulletin 1/1994.

MASTER GAUGE

Master gauges are held at all compressor stations, and will be calibrated annually by the manufacturer.

BA LAMP

General

The lamp is a rechargeable unit, intrinsically safe to standard EEx ia e IIC T5

Two bulbs provide flood or spot illumination. The failure of one bulb will not affect the lamp's operation.
Charging units will be supplied to the following:-
Pumping Appliances 1 x 3 way charger in the crew cab.
ETs/HRT 1 x 3 way charger in the BA locker.
Aerial Appliances 2 x 1 way chargers in the BA locker.
Training Centre 1 x 6 way mains charger in the BA School

On pumping appliances, ET's and HRT - two BA sets must be fitted with a lamp at all times. The lamps on the appliance must be rotated on a regular basis to ensure that they maintain a full charge.

On aerial appliances - the lamps should be left permanently housed in the charger.

Defective lamps and chargers should be exchanged on a one for one basis at the designated holding Stations.
Dimensions 225mm x 70mm vertical position
210mm x 80mm horizontal position
Weight 700g
Charge Indicator From zero to 8
Full Charge 3 hours
Recharging Time From zero to 8 is 12 hours

BA TALLY

Each Breathing Apparatus set is issued with a tally to identify the set and the wearer when the apparatus is in use.

The information indelibly marked on the tally should be clear and easily seen. Any tally which is showing signs of wear to the indelible marking should be replaced.

The tally is double sided, one side indicates single configuration (1800 litres). The reverse side is for twin configuration (3600 litres). Dosimeter readings (mSv) in and out are recorded on both sides. (see diagrams in appendix J).

BA COMMUNICATIONS HEADSET FOR USE WITHIN CHEMICAL PROTECTION SUITS

General

The Communication Headset comprises of:-

Facemask microphone/receiver ear cup with bone conducting microphone.

Push To Transmit (PTT) switch.

Motorola IS radio headset connector.

Connecting leads.

The headset is intrinsically safe to BASEEFA certification.

The headset is to be worn to the right ear of the wearer with the ADSU and low pressure warning whistle located on the left. Hearing will not be impaired. The set is to be stored within the chemical protection suit bag.

Donning Instructions

Unscrew the aerial and remove the rubber cover from the IS radio auxiliary connector.

Refit the aerial and locate the headset connector to the IS radio.

Locate the IS radio on to the BA set waistbelt. Body size will dictate the most suitable and comfortable position for the wearer.

Clip the PTT switch on to the shoulder harness in a position that will allow operation by the wearers elbow.

Fasten the headset to the BA set head harness, the ear cup is to be positioned between the bottom and middle straps (see diagram below). The ear cup must be fitted over the wearer's ear with the bone microphone positioned under the ear lobe.

The cable from the PTT to the headset is to be routed under the shoulder harness - taking care to ensure there is sufficient cabling for full head movement.

Note: The rubber cover from the radio must be kept in a secure clean location on the appliance.
Radio transmissions without the headset fitted would not be intrinsically safe if the rubber cover were not fitted.

The headset is designed to be used only when chemical protective suits are used.

Procedure

The communication headset should only be attached to the BA team leaders BA set when chemical protection suits are to be donned.

The radio communications will be tested in conjunction with the chemical protection suit on a six monthly basis and, in addition, a function test will be carried out before a team enters a risk area.

The headset is quickly and easily interchangeable between BA sets.

Defective headsets will be returned to Supplies, the IS radio will in this instance be reconfigured to normal use. The rubber cover will be refitted on to the auxiliary connector before the radio is used operationally.

A defective headset will not require the BA set or IS radio being taken off the run.

Note: The BA communication headset must only be used with an IS radio.

APPENDIX B - GENERAL CHECK
SINGLE CYLINDER - STANDARD DURATION BA (SDBA)

To be carried out whenever a wearer takes over a B A set.

Inspect the set for general cleanliness, paying particular attention to;
the visor
the reflex seal on the facemask
the air hoses

Ensure that the cylinder connections are hand tight and that the second cylinder valve connector passes on the inside of the cylinder support bar to the blanking port .

Ensure that the cylinder shoulder is flush against the cylinder support bar.

Don the set adjust shoulder straps and fasten waist belt for comfort.

Place the supporting strap of the facemask around the neck.

RESET THE DEMAND VALVE

Depress the black rubber first breath reset button on the side of the demand valve and check red supplementary flow knob to ensure that it is in the off position.

Open the cylinder valve slowly but fully.

Check the pressure gauge to ensure that the cylinder is at least 80% full (240 bar). If not, change the cylinder. A fully charged cylinder should be at least 90% full (270 bar).

Note: It is good practice to change the cylinder if the contents are found to be less than 250 bar when the wearer takes over the set.

Ensure that there are no audible leaks.

Close the cylinder valve and check that the gauge reading does not drop more than 10 bar in one minute.

Open the cylinder valve.

Don the facemask, adjust the lower straps first and then the upper pair, followed by the single strap at the top (DO NOT OVERTIGHTEN).

Exhale into the mask then inhale sharply to activate the first breath mechanism in the demand valve.

Check positive pressure by gently lifting the mask from the face (air will flow outwards). Remove finger and allow the mask to reseal.

Check the operation of the supplementary flow.

Breathe in and out two or three times to ensure that air is flowing. Hold breath and listen to ensure that there are no audible outward leaks.

Dis-engage the handwheel locking mechanism and close cylinder valve.

Breathe down contents of system.

Observe the pressure gauge to ensure that the whistle sounds clearly at 55 bar plus or minus 5 bar.

Ensure that the whistle sounds continually to 10 bar.

Continue to breathe normally until the facemask is pulled gently onto the face.

Check that the gauge needle returns to zero.

Remove the facemask.

Note: Cylinder Connections

Because of the high working pressures it is important that the longer cylinder connections are checked for hand tightness daily and before use.

Ancillary Equipment Tests and Records

Check the breathing apparatus lamp.

Check the ADSU by carrying out a full function test;
arm the unit and allow the pre-alarm to sound.
move the unit to cancel pre-alarm.
allow unit to go into full alarm.
cancel by resetting the key.
carry out the manual override test by operating the red button.
reset the unit with the key.

Check that the personal line is attached to the set correctly and that the fastenings are firmly secured.

Attention should be paid to press and other fastenings.
Check the set and spare cylinder stowage mechanism on the appliance.
Fill in the breathing apparatus tally; name, cylinder pressure and station.

The result of the check should be entered on the Watch Duty sheet and in the set Log Book. Any defects should be reported to the Watch Commander and entered in the set Log Book.
Note: The twice daily check is to be entered in the BA Log Book and recorded as 'D'.

APPENDIX C - GENERAL CHECK

DUO CYLINDER - EXTENDED DURATION BA (EDBA)

To be carried out whenever a wearer is instructed to formulate a Breathing Apparatus set into twin configuration for EDBA use.

Inspect the set for general cleanliness.
Adjust the Velcro strap to accommodate two cylinders.

Slide the fully charged cylinders under the strap to lie either side of the cradle, with the cylinder valves passing either side of the cylinder support bar. The cylinders should be laid with their valves slightly angled inwards.

The cylinder shoulders should be flush against the cylinder support bar.

Screw the cylinder connectors fully into the cylinder valve outlets.

Don the set, adjust the shoulder straps and fasten the waist belt.

Place the supporting strap of the facemask around the neck.

RESET THE DEMAND VALVE

Depress the black rubber first breath reset button on the side of the demand valve and check red supplementary flow knob to ensure that it is in the off position.

Fully open the right hand cylinder valve only.

Note: The General Check is carried out by opening only one cylinder valve as the complete pneumatic system is charged as soon as either cylinder valve is opened

The remainder of the General Check is as for Standard Duration BA.

Twinning the set will only occur on the incident ground, during training or the six monthly test. An appropriate entry should be made in the log book after use.

APPENDIX D - START UP AND CLOSE DOWN PROCEDURES

SDBA Start up

Depress the reset button

Ensure the supplementary flow knob is in the off position.

Open the cylinder valve slowly but fully.

Check the cylinder to ensure that it is at least 80% full. (For 300 bar cylinders, this is 240 bar.)

Don the facemask and adjust the head harness.

Tighten the harness straps in sequence, BOTTOM,

MIDDLE, TOP. DO NOT overtighten.

Inhale sharply to activate the demand valve. Breathe normally 2-3 times to ensure there is a flow of air.
Inhale and hold breath for 2-3 seconds to ensure that there is no constant flow.

Operate the supplementary flow knob.

Insert a finger under the face-seal and check for a steady outflow of air. Remove the finger and allow to re-seal.

Close the cylinder valve and keep the hand on the wheel.

Breathe down the set until it is impossible to breathe.

Open cylinder valve.

Hand BA tally to the ECO.

EDBA Start up

Carry out start up procedures as for SDBA with the exception of;

Open the right hand cylinder valve slowly but fully.

Check that the cylinder is at least 80%full.

Close the right hand cylinder valve.

Breathe down set.

Open the left hand cylinder valve slowly but fully.

Check that the cylinder is at least 80%full.

IF YES - Open the right hand cylinder valve and carry out the same procedure as for SDBA.

IF NO - Close the cylinder valve and exchange for new cylinder. Carry out above procedure.

NB: When both cylinders are opened any slight differential in contents will equalise by decant.

It is absolutely crucial that both cylinders are fully opened prior to entry. If the general check is not carried out correctly, the possibility that the 2nd cylinder may be less than 80% full will not be apparent to the wearer. If only one cylinder is opened, the gauge will read 280 bar, for example, and may lead the wearer to believe that both cylinders are open whereas, in fact, only half of the available air will be delivered to the wearer.

Prior to entry into an incident whilst wearing EDBA, each team member will physically check that both cylinder valves are open on all the other team members sets. As a final check, the ECO will also physically check both cylinder valves of each wearer to ensure that they are fully open.

SDBA and EDBA Close Down Procedures

Collect tally from ECO.

Close down on ECO's instruction.

Depress the reset button.

Remove the facemask.

Close the cylinder valve(s).

Drain the air out of the set by opening the

supplementary flow knob.

Close the supplementary flow knob.

Brief the ECO of the actions taken in the incident.

Inform the Incident Commander / Sector Commander if necessary.

Report to Main Control if it is in operation.

APPENDIX E - AFTER USE SERVICING

To be carried out by wearers whenever a set is used or a cylinder changed.

Examine the set, paying particular attention to the following for damage and excessive wear;
the high pressure hoses,
the harness assembly,
the cylinder.

Clean the set thoroughly, soap and water may be used on the harness, hose and backplate. Remove the demand valve from the facemask and fit the yellow protective cover. The demand valve should not be cleaned without this protective cover fitted.

Protective covers will be located in Station BA rooms for this purpose. Particular attention should be paid to the cleanliness of the second connector blanking port.

If the set has to be fully immersed in water to facilitate cleaning, then a positive pressure to all pneumatics should be achieved by connecting a cylinder to the set.

The facemask should be cleaned in a solution of 'safety wash ' and warm water, then rinsed thoroughly in clear, cool, running water.
After washing, shake the mask to remove excess water and dry using the wipe cloth provided.

Do not immerse pressure gauge or demand valve in water

Do not try to cure leaks by overtightening
Note: The set and all ancillary equipment must be maintained in a clean state at all times.
Servicing the set following decontamination.
Following decontamination in the full body showers, check for any sign of contamination. If the set is contaminated it should be thoroughly cleaned and dried taking particular care that no accumulation of water has built up in the whistle and demand valve.

APPENDIX F - MAINTENANCE AND TESTING

Breathing Apparatus Maintenance/Standard Test Schedule

The set will be subjected to the following tests:-
R On receipt at station
U After use or change
D The twice daily test (at the change of each Watch)
M Monthly
S Six Monthly
A Annual Service (Carried out by the manufacturer)
O Other reasons ( e.g. following repairs or if the set is impounded ) (carried out by the manufacturer or by special examination by a safety officer).
Note: The test on receipt is the same as the daily test.

At retained stations, a weekly test will be entered in place of the twice daily test.

The date of the annual service is flexible in that all BA sets will be serviced by the manufacturer during the month of April.

A BA set should not be taken off the run if the service does not correspond with the last annual service date. Any BA set found after April still requiring an annual service should be returned to the nearest holding station. The logbook should be annotated in section 2 with; Annual service required.

The log book will be the sole record of use and repairs to a breathing apparatus set. It is essential that it is kept clean, tidy and legible. The log book should be kept in the plastic wallet at all times other than when entries are being made.

With the exception of the decontamination/emergency attachment, the log book refers only to the testing of the breathing apparatus set and does not refer to the testing of any ancillary items of equipment. Results of tests on ADSU's, personal lines and torches should be entered in the Individual Test Record (equipment sheet) for each item.
Whenever any section of the log book is completed, a replacement book should be issued by the Supplies Officer on receipt of a Stores Demand Note. Completed log books are to be forwarded to the Operations Equipment Team at Fire Service Headquarters where they will be retained for record purposes.

The following maintenance and testing should be carried out on stations:
General check.
After use servicing.
Monthly inspection and testing (including the breathe down test).
Six monthly test.
After use servicing
See above
Monthly Inspection and Testing
BA Set
Carry out a thorough visual examination of all component parts for damage and/ or excessive wear.
Examine the set for cleanliness. If necessary, comments should be entered in the remarks column of the log book. Station Commanders should examine the log books at regular intervals.
Carry out the general check.
Carry out the breathe down test every 30 days, ensuring that the set pressure gauge drops a minimum of 50 bar. Station/Watch Commanders should exercise discretion over this test.
Cylinders.
Rotate all cylinders to ensure even usage.
Visually inspect for the following:
Deep scratches. If the black carbon lining is visible the cylinder should be taken off the run.
Damage to the composite wrapping.
Damaged valves.
Date of last test.
Note: Oil and grease must not be allowed to come into contact with the cylinder and valve parts.
Defective cylinders should be exchanged on a one for one basis with station stock and then transported to the Training Centre. Any cylinder returned must be properly documented.

Six Monthly Test
Carry out all stages of the monthly test plus the following items:-
Convert the BA set to twin cylinder configuration.
Do not connect a partially empty cylinder as this leads to rapid decanting from the full cylinder. Any decanting must be carried out in a slow and controlled manner.
When the set is reconfigured to single cylinder mode, check the integrity of both connectors.
Fit the decontamination/emergency attachment and carry out a working test;
Connect the auxiliary reducer to a spare cylinder.
Attach the dedicated 3 metre decontamination air hose.
Open the cylinder valve slowly but fully.
Check pressure gauge to ensure that the cylinder is 80% full.
Connect to the decontamination attachment on the BA set.
Close the BA set cylinder valve and breathe normally.
Close the spare cylinder and breathe set down .
Disconnect and replace the red dust cap to the decontamination/emergency attachment.

APPENDIX G - CYLINDER, CHARGING AND

COMPRESSOR MAINTENANCE

All cylinders must be tested as follows:-
Initial test after 3 years. NB: To avoid all cylinders becoming due on the same date, a phased rotation will commence in the second year. Testing will then take place every 3 years.
Cylinders should be marked as follows:
With a label just below the shoulder indicating date of manufacture
Cylinders will also be marked on the body with WY.
Charging of breathing apparatus cylinders
Charging of BA cylinders should only be undertaken by personnel trained in the use of the equipment and should be carried out in accordance with the compressor charging instructions.
Excessive force must not be used when opening or closing valves fitted to the compressor.
Operating instructions should be displayed in compressor rooms/ISU.
Cylinder transportation
When carried in cars or vans, the cylinders should be secured in the carrying cradles to minimise movement. When transported on appliances, only fixed cylinder mountings should be used.
Compressor locations:-
Training Centre
Bradford
Keighley
Huddersfield
Halifax
Leeds
Gipton
Wakefield
Pontefract
Incident Support Unit

Compressor Maintenance by Station Personnel
Weekly check
Remove the side panel of the compressor and check the oil level. The oil should be level with the top of the SCREW THREADS. If the oil level is low, only top it up using the correct oil.
Ensure that the air intake is clear of any rubbish, leaves etc.
Visually examine the compressor for any signs of defects or loose items. Clean the exterior of the compressor and framework.
Guards should not be removed. Periodically check the accumulated running time. Refer to the individual compressor specifications for the respective filter changes.
Operating instructions
Operating instructions should be displayed in compressor rooms.
Filtration system
The filtration systems vary so reference should be made to the individual compressor specifications for the type of system.
Log Book
Compressor running times must be carefully recorded in the log book provided and a close check kept to ensure that the filters are replaced at the appropriate times.
The log book should be kept readily available at all times to enable recording of routine and maintenance work.
Moisture Monitor
The moisture monitor is pre-set and needs no attention. (It will be checked by the engineer annually). If it is reported that the monitor has actuated, it should only be necessary to purge the system and change the filter cartridges. If low running hours are recorded and the colour indicator has not changed, inform the Operational Equipment Team before replacing the filter cartridges.
Air testing

Air testing apparatus is located in the BA school compressor room at FSHQ.

Each compressor should be air tested quarterly and after each filter change.

The compressor maintenance contractor will undertake the quarterly tests when carrying out servicing.

Written instructions have been issued to each compressor station along with a compressor log book.

The maximum levels of contaminant which are acceptable in air used for BA are as follows;

Carbon Monoxide 5ppm(5.5 mg/m3)
Carbon Dioxide 500ppm (900mg/m3)
Oil mist 0.5mg/m3
Water vapour 35mg/m3

The air should be colourless and odourless.

Compressor Air Contamination

If contamination is suspected by station personnel the following procedure should be followed;

Do not use the compressor.

Inform MACC.

Contact the contractor direct and pass the information "contamination is suspected".

Inform the Operational Equipment Team.

The last cylinder charged by the compressor to be impounded and handed over to the Contractor.

Results of Test

Satisfactory:

Inform MACC that the compressor is operational.

Inform the Operational Equipment Team.

Not Satisfactory:

Inform MACC that the compressor is not operational.

Inform the Operational Equipment Team.

All cylinders which have been charged by the compressor involved should be
withdrawn from service, discharged and refilled. (They should be identified by the appropriate colour code label)

Compressor Maintenance

The Brigade now operates a compressor maintenance and repair contract with:

Hamworthy Compressor Systems Ltd

Any fault or breakdown that occurs on a brigade compressor can be reported direct to Hamworthy on the following telephone number:-

(01452) 528431 - ask for PAUL MASON

If he is not available, leave the defect message for his attention.

If a delay is encountered of more than three working days, from the date that the defect was reported to Hamworthy attending, contact the Operational Equipment Team.

When contacting Hamworthy, personnel should give as much information about the fault as possible.

FACTAIR F2000 SAFE-AIR COMPRESSED BREATHING AIR TESTER

Introduction

The Factair F2000 Safe-Air tester is a calibrated instrument to check the flow and quality of breathing air in accordance with BS:4275 and other standards. When testing BA cylinders and compressors no manual setting of flow and times is required, these are programmed automatically. The instrument will test the oxygen (O2), oil, carbon monoxide (CO), carbon dioxide (CO2) and water (H2O) content of the air sample concurrently. Oxygen content is displayed on an LCD screen, the other readings are indicated by detector tubes.

General description

The test unit is self contained with its own rechargeable power source. Should this be discharged the unit may still be run using either the mains powered charging unit or the low voltage lead connected to a suitable supply, eg. cigarette lighter socket in a car. The unit is enclosed by a detachable lid which contains a summary of the operating instructions. To detach the lid, with the lid uppermost, release the lockable trunk fastener and open the lid through 180°. It can then be lifted off and used as a base to stand the machine on during tests. When the tester is not in use the lid must be fitted to prevent contamination of the test channels.

The various functions and readings are selected by pressing the soft touch buttons on the control panel.

Features

Detector tube outlets and red LEDs for
CO
CO2
Oil
H2O cylinder
H2O Airline

LCD display, by selection, for :-
percentage oxygen content,
airline temperature °C
ambient temperature °C

Control panel switches/LEDs to select :-

Selection Colour

oxygen content display red
airline temperature red
ambient temperature red
test cycle green
purge cycle green
on/reset no LED
power off no LED

LED display for time elapsed on test and purge cycles in minutes

12-15 volt input socket
LED charge indicator

Pressure gauge 0-11 bar reading system pressure

Flowmeter 0-600 litres/minute, airline testing only
Flow control valve used in conjunction with flowmeter

OPERATION

Before Use

Remove the lid.

Ensure that the battery has sufficient charge for the test or alternatively that a 13 A power supply is available.

Ensure that one of each of the four types of detector tube is to hand and that they have not reached their expiry date.

TESTING HIGH PRESSURE AIR SUPPLY, CYLINDERS/COMPRESSOR

Turn on power by depressing the ON/RESET button. If the battery is low a continuous tone will be emitted. If this is heard, charge the battery before use or use directly from the mains supply via the charging adaptor. However, if the warning occurs during a test there will be sufficient power to complete the test sequence.

Ensure the flow control valve is closed.

Unscrew the thread protector from the regulator and connect the DIN coupling of the air pressure regulator to the cylinder to be tested, or the lead from the compressor using the double female adaptor. Connect the snap connector to the AIR INLET on the Safe-Air tester. Check the supply is to full pressure by reading the pressure gauge on the regulator. Low pressure can give an incorrect result for the water test. Note that the SYSTEM PRESSURE gauge reading must be within the range of 1 - 10 bar.

Depress the PURGE button to allow the system to purge. The purge time will appear on the countdown display and the channel LEDs will be lit. Purging is complete when the elapsed time display reads 0, the warning tone sounds and the red LEDs are extinguished.

Press RESET.

Break off both ends of the detector tubes with the special breaker provided by inserting the tube as far as it will go into the centre hole and turning it once or twice which will scratch the glass and weaken it. Then insert the same end into the outer hole until the tip breaks off and falls into the container. Ensuring that no glass shards are present in the glands, insert the tubes into the relevant ports and tighten the gland covers. Always check to ensure that the tubes are inserted correctly with the arrows pointing outwards, the direction of the air flow. Insert the Dräger water detector tube in the socket marked H2O CYLINDER.

When all the tubes are in position depress the TEST button to commence the test. The test time will be displayed and the channel LEDs will be lit.

The unit can now be left until the tests are complete. The test is complete when an intermittent warning tone sounds, the elapsed time reads 0 and the channel LEDs are extinguished. Note that only the oil and water detector channels are used for the full duration of the test cycle.

To read the oxygen concentration, airline and ambient temperature, press the appropriate button, the lit button will indicate the displayed reading.

Silence the warning tone by depressing the RESET button.

Remove the tubes, check the readings and record them on the report pad with the other information relevant to the test.

Depress POWER OFF button to switch the tester off.

Dispose of the used tubes safely.

TESTING AIRLINES FOR BREATHING MASKS

Connection from the breathing air system to the tester should be made via a suitable hose that has been purged to atmosphere. A spare snap connector is provided in the kit.

Adjust the system flow regulator so the normal minimum flow required for the face-piece shows on the flowmeter (120 litres for half and full masks, often more for air-fed visors, hoods and suits). The maximum inlet pressure of 10 bar must not be exceeded.

Once the minimum flow is set, depress the PURGE button to allow the system to purge. The purge time will appear on the countdown display and the channel LEDs will be lit. Purging is complete when the display reads 0, the warning tone sounds and the red LEDs are extinguished.

Press RESET.

Break off both ends of the detector tubes with the special breaker provided by inserting the tube as far as it will go into the centre hole and turning it once or twice which will scratch the glass and weaken it. Then insert the same end into the outer hole until the tip breaks off and falls into the container. Ensuring that no glass shards are present in the glands, insert the tubes into the relevant ports and tighten the gland covers. Always check to ensure that the tubes are inserted correctly with the arrows pointing outwards, the direction of the air flow. Insert the Kitigawa water detector tube in the socket marked H2O AIRLINE unless the system incorporates a desiccant dryer when the cylinder socket should be used.

When all the tubes are in position depress the TEST button to commence the test. The test time will be displayed and the channel LEDs will be lit.
The unit can now be left until the tests are complete. The test is complete when an intermittent warning tone sounds, the elapsed time reads 0 and the channel LEDs are extinguished. Note that only the oil detector channel is used for the duration of the test cycle.

To read the oxygen concentration, airline and ambient temperature, press the appropriate button, the lit button will indicate the displayed reading.

NOTE. The airline temperature must be checked and noted during tests.

Silence the warning tone by depressing the RESET button. Remove the tubes, check the readings and record them on the report pad with the other information relevant to the test.

Depress POWER OFF button to switch the tester off.

INTERPRETING DETECTOR TUBE READINGS

Carbon Monoxide

The media in the detection tube will change from yellow to dark brown. The extent of the change is the level of CO in parts per million (PPM).

Carbon Dioxide

The media in the detector tube turns for a purplish blue to a pale pink. The length of pale pink denotes the level of CO2 present in parts per million.

Oil

The yellow media in the detector tube will probably slightly darken during the test due to water passing through it. There may also be small drops of water a the outer end of the tube, which will have been dyed yellow.

If oil is present the yellow media will turn a pale blue colour, the extent of which is read on the scale printed on the tube in milligrams per cubic metre (mg/m;).

Water - Cylinder

The yellowish media in the tube will turn reddish-brown to indicate the presence of water vapour. Read the entire length of this discolouration against the scale on the tube printed to indicate mg/m;.

Water - Airline

The yellow media in the tube will turn yellowish green of blue when water is present and the extent of the colour change is measured on the tube scale in mg/m; and multiplied by a factor of ten. To establish the pressure dewpoint refer to the graph on the back of the Safe-Air tester results sheet. Take the point where the tube reading in mg/m; intersects the system pressure gradient and read off the pressure dewpoint from the vertical scale on the left. Pressure dewpoint is the temperature at which free water is likely to occur at system pressure and therefore the minimum operating temperature of the system.

MAXIMUM PERMITTED LEVELS OF THE ABOVE

The maximum levels of contaminant which are acceptable in air used for BA systems charged to 300 bar are as follows;

Carbon Monoxide 5ppm (5.5 mg/m3)
Carbon Dioxide 500 ppm (900mg/m3)
Oil mist 0.5 mg/m3
Water vapour 35 mg/m3

The maximum recommended water content for BA charging compressors is 25mg/m;. The Home Office Code of Practice requires a maximum dewpoint of -50°C.

The maximum permitted water content for airlines is a relative humidity of 85% and there must be no free water in the system.

MAINTENANCE

Battery Charging

The fully charged battery has sufficient capacity to supply power for up to ten consecutive tests but it is recommended that the battery is recharged after use. It takes approximately 14 hours to fully recharge a discharged battery, continuous charging should not exceed 16 hours. When on charge the amber LED is illuminated.

The battery can be charged with either with the mains adaptor/charger unit or the car cigarette lighter adaptor.

If the Safe-Air tester has not been used for a period of 3 months or more the battery should be given a full 14 hours charge.

Calibration

The Safe-Air tester has to be recalibrated by the maker every twelve months, the date for the next calibration is marked in the unit's lid. This will be arranged by Operations Equipment Team before the due date.

Detector Tube Cutter

Empty the container after use and before the container is stowed in the satchel, ensuring that the broken glass is disposed of safely. The container should be washed out periodically as chemicals from the tubes may accumulate and attack the plastic.

GENERAL

No other maintenance is required other than cleaning and visual inspection of the component parts.

EQUIPMENT INVENTORY

1 Test kit in box with detachable lid
1 15V charging unit complete with lead
1 Detector tube cutter
1 Airline snap connector Rectus type 21 for low pressure air tests
1 Pressure regulator, non-adjustable for high pressure air tests
1 Double female connector, regulator to compressor outlet
1 Results of air test report pad
1 Adaptor & lead for obtaining power from car cigarette lighter socket
1 Satchel
Detector tube for carbon monoxide Kitigawa part no. 600SP
Detector tube for carbon dioxide Kitigawa part no. 601SP
Detector tube for oil Kitigawa part no. 602SP
Detector tube for water Dräger part no. 6728531

APPENDIX H - DEFECTIVE SETS
Transfer of defective sets
There are three methods for the routine transferring of defective BA sets. These are;
from a BA holding station (Ossett, Pudsey or Halifax),
by courier, or
by light duties personnel from FSHQ.
As a back up facility, the equipment normally carried on the courier vehicles is kept in the Supplies Section logistic cage at FSHQ at weekends and public holidays only. This facility is available via the designated FSHQ duty officer and should only be used if holding stations stock is exhausted.
Whichever method is used, defective sets should be prepared as follows;
Remove the cylinder, ADSU and BA lamp from the defective BA set ready for transfer to the replacement set.
The defective set should be accompanied by the log book inside its wallet and the facemask bag to prevent damage to the mask while in transit. The log book wallet should be securely fixed to the waist belt using the loops provided.
Where only one BA set per major pumping appliance is defective, exchange should be arranged via the courier system or light duties personnel from FSHQ.
If the Station Commander considers that the delay in exchanging a defective set would be excessive due to the timing of the next courier visit, he/she may make alternative arrangements.
If more than one set per major pumping appliance becomes defective at the same time, the relevant BA holding station should be informed who should arrange for a priority exchange.
BA holding station
When the alternative methods of transferring sets are not available or if the Station Commander deems it necessary, a station with a defective set should contact Ossett, Pudsey or Halifax for a replacement set to be collected/delivered complete with log book.

Where stations have available resources to exchange a defective BA set (i.e. special appliances or fire safety vehicles), then these should be used in the first instance. This will ensure greater availability to those stations without such resources that rely on the courier vehicles. If these resources are not available, a flexible duty system officer should be used.
Courier
Each courier vehicle carries 3 BA sets, 3 ADSU's and 3 BA lamps for exchange.
Station personnel should leave the defective set available for collection having removed the cylinder, ADSU and BA lamp. The BA set log book should be completed giving details of the set defect. Where an ADSU or BA lamp becomes defective it should be available for collection complete with its equipment history sheet.
Couriers should issue a replacement BA set/ADSU/BA lamp (if available), place the defective equipment on the courier vehicle and mark it with the defective tags as supplied. The defective equipment should be exchanged at the next BA holding station on their route.
Station personnel should be aware that couriers cannot alter their routes to return for equipment that has not been left ready for collection or if they do not have any spare equipment available on their vehicles.
Note: Couriers are not responsible for testing or removing ancillary equipment from defective BA sets. Stations should ensure that BA sets are clean and ready for collection before the courier arrives. Couriers cannot accept BA sets otherwise.
Light duties personnel from FSHQ (Monday-Friday during office hours)
When a set becomes defective on a day when the courier is not due or has no spare equipment available, stations should contact the e-mail address FIREGROUND_BA before 12.00 noon. Stations should receive confirmation by telephone if an exchange is possible that day.
Fireground Assistants will check the e-mail address shortly after mid-day and liaise with the Training Centre with regard to those stations that require replacement sets. As soon as possible after this and certainly by the end of the working day, stations should be contacted to confirm whether or not the BA set is to be replaced that day.
Light duties personnel should transport a spare set from the Training Centre to the station concerned and exchange the defective set at the nearest holding station on the return journey.
Transfer of defective cylinders
Defective cylinders should be clearly labelled and exchanged on a one for one basis with cylinders held on courier vehicles.

APPENDIX I - DISTRESS TO WEARER/ SPECIAL EXAMINATION PROCEDURE
A distress to wearer situation is deemed to have occurred if the wearer:
has been deprived of air, or
has been exposed to a contaminant, whilst working in a contaminated atmosphere, or
has been exposed to a contaminant from within the air supply.
Special Examinations
This category includes incidents involving breathing apparatus not covered by the definition of distress to wearer. A special examination is appropriate when:
A specific fault in the apparatus has been identified.
The set requires an examination as part of a wider investigation.
Whenever a set is involved in a distress to wearer or special examination situation an entry to that effect should be made in the log book remarks column. The following columns should also be completed ;
Date, name, station and signature.
If the wearer is unable to complete the logbook, the entries should be made by the Watch Commander.
Distress to Wearer/Special Examination Procedure
The Incident Commander is responsible for declaring the distress to wearer incident and should implement the following procedure:
Pass a "distress to wearer suspected" message to MACC.
Appoint a Preliminary Investigating Officer, who will:
Impound the set whilst at the incident.
Complete Form 652.
Note the number of clicks required to FULLY OPEN the cylinder and then close down.
Seal the BA set in a clean plastic bag.
Secure the bag with a security seal and record the number on form 652.
The Preliminary Investigating Officer, on completion of form 652, should pass the sealed set and the completed form to the Investigating Officer on his/her arrival.

The set should be sent by direct transport, as soon as possible, to the Brigade Safety Officer for examination with form 652, form 724 details, the BA log book and any Accident Reports.
A replacement set, complete with all ancillary equipment, should be obtained by completing form 652R and presenting this to the nearest BA holding station.
MACC Responsibilities
On receipt of a "distress to wearer suspected" message, inform the First call Officer.
First Call Officer Responsibilities
Appoint an Investigating Officer.
Investigating Officer Responsibilities
Take charge of the impounded BA set which should be correctly sealed and tagged in the appropriate plastic bag.
Take charge of form 652 from the Preliminary Investigating Officer, ensuring that all appropriate sections are completed.
Forward the set and report, sealed, dated and clearly marked "BA - Distress to Wearer Incident - Urgent" to the Brigade Safety Officer, as soon as possible.
Brigade Safety Officer Responsibilities
Inform HSE if RIDDOR reportable. Ascertain if they wish to be involved in the examination of the malfunctioned equipment.
Appoint a set examiner and forward the BA set to the examiner without reports.
Collect all relevant reports.
Set Examiner Responsibilities
Examine set and complete form 652A.
Liaise with BSO
Return BA set and reports to BSO
The set examiner does not have access to Distress to Wearer Reports, but can request further information from the BSO if necessary.

APPENDIX J - RAPID DEPLOYMENT BOARD (introduced June 2001)
Description
The rapid deployment board is simply a stopwatch. It will start timing on insertion of a tally and stop on removal of tallies.
The board is splash proof and of robust construction.
2 “AAA” sized standard batteries power the unit.
The RDB accommodates up to two BA tallies.
The unit comprises a LCD display operated by a contact less magnetic system that is activated when a BA tally is inserted.
On entry of the tally the display sets to zero and starts an elapsed timer, counting minutes and seconds. It counts minutes and seconds to 99 minutes and 59 seconds.
When the timer reaches twenty minutes, an audible alarm sounds to remind personnel to set up stage 1 or 2 procedures.
It will continue to display the time for as long as the tally is inserted.
When the tallies are removed the time displayed will hold.
It has a low battery warning. “BATT” will flash when the battery requires changing.
The RDB will be stowed to the right of the Stage 1/2 BA board in the appliance cab.
The RDB can be removed fully from the stowage bracket if required.
Tallies can be inserted without removing the RDB.
For rapid deployment procedures refer to Operational procedure No 30 Appendix A
Maintenance
Weekly
Carry out a function test on the RDB, by inserting a tally and enabling the clock for ten seconds.
In addition batteries will be exchanged annually from first date of service.
Replacing batteries
The battery compartment is located to the lower left hand side of the RDB.
A screwdriver is needed to loosen the four screws to the battery compartment.
Remove the back plate.
Replace the batteries. New batteries are to be positioned as indicated by the diagram in the compartment.
Replace the back plate ensuring the rubber seal is in tact.
APPENDIX K - GRAPHICS
RAPID DEPLOYMENT BOARD

STAGE I & II ENTRY CONTROL BOARD

MAIN CONTROL BOARD

BA TALLY
mSv
WYFS
Station
CABA No
in
Suit No
1800L
Cylinder Pressure
Time in
out
Name
SDBA TALLY NORMAL USE
(FRONT OF TALLY)
mSv

WYFS

Station

CABA No (Twin) No
in
Suit No
3600L
Cylinder Pressure
Time in
out
Name
EDBA TALLY - TWINNED CYLINDER CONFIGURATION
(REVERSE OF TALLY)
BA GUIDELINES
BA GUIDE LINE TALLIES
PERSONAL LINES
HOOK FOR PERSONAL LINE
PERSONAL LINE POUCH