Products

Product Description:

• FaceMask
• First Stage Pressure Reducer
• Lung Demand Valve (LDV)
• Back frame and Harness Assembly
• Monitoring Options : Pneumatic Analogue Gauge

1. GENERAL REQUIREMENT:

• The breathing apparatus shall be approved to EN 137 (2006) type 2.
• All components of the SCBA shall be arranged to minimize interference when maneuvering in confined spaces and when passing through small openings.
• Weight of the ready to use SCBA set shall not exceed 11 kgs, along with facemask and fully charged air cylinder .
• The breathing apparatus should accept a range of compressed air cylinders.
• Shall operate in temperature range from -30 DegreeC to + 60DegreeC
• Certificate of conformity as per article Module D of PPE Directive 89/686/EEC

2. BACKPLATE & BODY HARNESS:

• The Backplate should be lightweight, non-metallic Polyamide composite material ensuring comfort and stability while carrying the Cylinder.
• Should be chemical, heat & flame resistant, lightweight, & should have an anatomical shape allowing perspiration on the back i.e. air circulation between the cylinder and the wearers back
• Should have easily accessible with 3 carrying handles, two handles on side and one in the bottom of the backplate.
  • a. Shall equipped with Second man connection
  • b. There should be perfect evenly distribution of the weight of the SCBA over the user’s lumbar region, hips and shoulders.
• The backframe must have a fixed height
• Shoulder & Waist belt harness shall be of cushioned Kevlar with Nomex material.
• The shoulder harness and waist belt harness should be cushioned for better wearing comfort and the material for the harness should be fire retardant and self extinguishing. There should be flame retardant photo-luminescent strips on shoulder & waist belt straps.
• Shoulder and waist belt harnessing shall be independently adjustable
• Shoulder and waist adjustment friction buckles shall be of Flame Retardant polyamide construction
• A cam-lock mechanism shall be used to secure the cylinder strap in place to ensure simple and secure operation
• The cylinder strap shall accommodate a complete range of sizes of cylinders without the use of tools. The cylinder strap will be manufactured in a rubber material giving additional security to the cylinder position by means of friction
• Waist belt shall have holder to hold LDV properly when not in use.

3. PNEUMATICS - PRESSURE REDUCER & LUNG DEMAND VALVE & HOSES
a) Pressure Reducer (1st Stage Reducer)

• The reducer shall be capable of supplying required airflow for demand valve ,the Nominal flow for pressure between 300 bar to 20 bar would be 1000 lit/ min.
• The reducer should have inbuilt outlet allowing an air supply to be added for additional rescue hood or full face mask (Second Man Connection) or for Airline connection.
• The first stage reducer shall consist of a balanced piston assembly
• The pressure reducer should be set to generate a medium pressure of 6-8 bar(around 7 bar)
• The pressure reducer should be fitted with a safety valve which should open if the medium pressure exceeds the permitted limit in the event of an operating abnormality.

b) Lung Demand Valve (2nd Stage Reducer)

• The automated LDV should be compact, ergonomic and robust to offer excellent respiratory comfort for any level of user workload, made up of PBT/Polyamide with silicon rubber housing.
• Should be quick connectible from the front side of the mask and can be mounted on the waist belt when not connected to face piece. Once connected to mask the demand valve shall unlock only by pushing the click buttons.
• The second stage reducer shall consist of a tilt valve /balance piston assembly.
• Shall activate immediately after connecting to the mask and shall maintain positive pressure inside the mask when donned. When demand valve is unlocked from mask, the air supply shall automatically cut off.
• Should have the output breathing air flow capability upto 500 lpm .
• Shall have a swiveling connection with the medium pressure hose for ease of movement while connected to facemask.
• LDV shall be connected by Quick release coupling to medium pressure tubing.
• Shall be equipped with a Bypass button so that if desired the LDV should allow the user to regulate / control it manually.
• The design of the LDV shall be such that it should open / replaced from the hose directly, instead of replacing the entire Medium Pressure Hose alongwith LDV.

Hoses

• Hoses shall be flexible and non-kinking type and shall permit the free head movement.
• Shall not restrict or close the supply at any time.
• The medium pressure hose comprising the demand valve must pass over the wearer's right while the high pressure hose comprising pressure gauge must pass over the wearer's left shoulder side.
• The hoses should not have any metallic outer cover and it should be hydro tested at twice the operating pressure.

PRESSURE GAUGE and WARNING WHISTLE

• Should have a luminescent dial encased in a flame retardant & shock absorbing rubber cover.
• Gauge shall be integrated with the warning whistle in a streamlined hose without any manifold block
• Pressure gauge should have precision class 1.6 (± 1.6 %).
• Pressure gauge shall have rubber cover with visible blow out release at the back with hole to gauge cover. This prevents breakage of gauge glass due to excessive pressure.
• The pneumatic gauge shall be located around the left shoulder
• Warning whistle should be a self actuating at a residual cylinder pressure of 50 +/- 5 bar. It should have more than 90db sound intensity and should be positioned on the left shoulder in front & close to the user face and ear.
• Warning whistle should be high-pressure activated & medium pressure driven.
• Whistle should not consume air more than 5 lpm.
• The whistle should sound continuously till the cylinder is shut or till all the breathing air is utilized.

4. LIGHT WEIGHT AIR CYLINDER:

• The air cylinder should have a maximum water capacity of 6.8 liters and free air capacity of min 1850 liters when filled at a pressure of 300bar.
• The test pressure should be 1.5 times the working pressure. Service life of cylinder should be minimum 15 years.
• The cylinder has to be aluminum lined, fully wrapped carbon composite material and basically approved to EN 12245 & CE marked.
• The weight of the cylinder when fully charged shall not be more than 6.5 kgs
• The design life of the Cylinder shall be of 15 years & Approved by PESO , Nagpur
• The cylinder shall be approved by CCOE (Chief Controller of Explosives, Nagpur) The cylinder shall be supplied with valve shall comply with EN 144 – 2  Cylinder Valve shall be equipped with Excess flow valve
• The cylinder shall be supplied with valve made from nickel plated brass.
• The design of the valve shall be such that it shall be protected against blockage and shall avoid transmission of particulate matter that may be contained in the compressed air. 
• The design of the valve shall be such that the spindle cannot be completely unscrewedduring the normal operation.
• There shall be air outlet in the valve assembly to fit a pressure reducer directly on the valve without the use of any spanner.

5. FULL FACEMASK:

• The full facemask should be approved to EN 136 Class III.
• The facepiece, internal half-mask and the skirt shall be made of high performance EPDM.
• Mask should have a flexible body and shall be of universal size so that can be used by users with different facial contour.
• The mask should have wide angle lens (visor) ensuring a panoramic field of vision without optical distortion.
• The visor material should be heat resistant Polycarbonate .
• It should have an adjustable 5-point head harness.
• An inner mask should be provided to minimize CO2 build-up and thus minimize dead space.
• The facemask should have an exhalation valve and external speech diaphragm to optimize voice communication
• Neck strap shall be made up of flame retardant material. 
• Should have an easy & quick fit connection to Demand Valve.
• The weight of the mask should not be more that 600 grams.
• The construction of facemask should be such that each and every component of the facemask shall be easily removable and replaceable without any tool required. 

6. USER MANUAL

• User manual shall be supplied with each set and full face mask, shall explain procedure for complete operation and maintenance.

7. WARRANTY

• The apparatus shall carry a limited warranty of not less than twelve (12) months, with the exception of the cylinder, which shall have Design life of not less than fifteen (15) years,

8. APPROVALS

The SCBA set shall be approved to following -
a. EN 137 : 2006 Type 2
b. EN 136 Class III for Full Face mask
c. EN 12245 CCOE (PESO) approval for Light Weight CFK Cylinder.
Cylinder valve to comply with EN 144 approved