Centrum Naukowo Badawcze Ochrony PrzeciwpoŜarowej (Scientific and Research Centre for Fire Protection) Nadwiślańska 213, 05-420 Józefów, Poland Telephone (+48) 22 789 11 11 Fax.: (+48) 22 769 33 45 e-mail: cok@cnbop.pl TECHNICAL AND USER REQUIREMENTS FOR FIRE-FIGHTING PRESSURE HOSES FOR FIRE-FIGHTING PUMPS according to annex to the Regulation of the Minister of the Interior and Administration of April 27, 2007 on the list of products used for ensuring public safety or protecting health, life and property, and the principles of issuing admittance to use these products (Polish O.J. dated 2007, No. 143 position 1002) introduced by the amending regulation of July 20, 2010 (Polish O.J. dated 2010, No. 85 position 553) Issue: July 2010
On the basis of publications from Polish O.J. dated 2010, No. 85 position 553. 3.2. FIRE-FIGHTING PRESSURE HOSES FOR FIRE-FIGHTING PUMPS 3.2.1. DIVISION AND MARKINGS 3.2.1.1. Sizes Depending on internal diameter, differentiation is made in hose size in mm: 25, 42, 52, 75 and 110. 3.2.1.2. Types The type of hose depends on the kind of couplings supplied: - ŁA with aluminium alloy couplings, - ŁA with copper alloy couplings, - B without couplings. 3.2.1.3. Types Depending on the construction of the hose tape, differentiation is made between fire-fighting pressure hoses with or without external coating. 3.2.1.4. An example of marking Fire-fighting pressure hose for pump and mounted pumps (W) with diameter of 52 mm (52), length of 20 m (20) and copper alloy couplings (ŁM): W-52-20-ŁM FIRE-FIGHTING PRESSURE HOSE. 3.2.2. PERFORMANCE 3.2.2.1. Construction The hose should be equipped with pressure couplings in keeping with the PN-M-51031 standard; its size should correspond to the diameter of the hose (for size 42 hose one should use the crown of the 52T coupling and a sleeve with diameter corresponding to the size of the hose). Page 2 / 7
The hose connection with couplings should guarantee tightness and resistance to test pressure. 3.2.2.2. Marking The following minimum information should appear clearly on each end of the external surface of the hose: - the manufacturer s mark or name, - marking according to the example shown in point 3.2.1.4. excluding the verbal section, - the year of production. 3.2.3. PARAMETERS 3.2.3.1. Basic parameters Table 3.2.3.1. contains the basic parameters. Table 3.2.3.1. Un. of Hose size Parameter measu re 25 42 52 75 110 Maximum working pressure 15 12 Test pressure bar 22.5 18 Bursting pressure (minimum) 45 36 R bend radius at 10- bar pressure not mm 250 420 520 750 1100 greater than Page 3 / 7
Length increment E L at working pressure External diameter increment E D at working pressure % % 0 5 φ * angle of torsion at working pressure calculated in terms of 1 m length not greater than o /m 120 100 60 40 *) the hose is not permitted to twist anticlockwise. Increment in length, diameter and angle of torsion at working pressure (initial pressure of 0.5 bar). 3.2.3.2. Chief dimensions and mass Chief dimensions and mass are given in Table 3.2.3.2. Table 3.2.3.2. Parameter Un. of meas. Hose size 25 42 52 75 110 + 1.0 + 1.5 + 1.5 + 1.5 + 2.0 Internal diameter mm 25 42 52 75 110 Standard length *) m 20 ± 0.5 Page 4 / 7
Max. line mass for hoses without external coating g/m 180 270 350 550 910 Max. line mass for hoses with external coating g/m 230 390 500 790 1320 *) other hose lengths are permitted in agreement with the purchaser in that hose mass and couplings cannot exceed 50 kg. 3.2.3.3. Tightness and resistance to test pressure Pressure hoses subject to test pressure for 2 minutes should not drizzle and should not have permanent or transitory jets of water. During testing the hose should not demonstrate changes in tape structure and other damage along its entire length. 3.2.3.4. Resistance to delamination Resistance to delamination in accordance with the PN-EN ISO 8093 standard of textile material and padding, concerning rubber padding this should be less than 1.00 N/mm. For the remaining padding materials resistance should be not less than 1.60 N/mm. 3.2.3.5. Accelerated ageing Following the conditioning of hose samples in environmental chambers at (70 ± 1) o C, in air atmosphere over a period of 14 days, bursting pressure should meet the requirements contained in Table 3.2.3.1. of the Annex. Furthermore, following conditioning the resistance to delamination should not be less than 0.9 N/mm. Prior to placing in the environmental chambers the samples of approximately 1 m in length subject to testing for bursting pressure, it is necessary to twist them 180 o in the middle section of their length and to attach them in this manner. The sample which is earmarked for testing resistance to delamination should be rolled up loosely. Page 5 / 7
3.2.3.6. Resistance to low temperature A hose which is double coiled in dried state, conditioned at air temperature of -30 ± 2 C for 4 hours and removed directly from the environmental chamber should uncoil or unfold easily and once again be rolled up without any folds, cracks and delaminations. 3.2.3.7. Resistance to wear Fire-fighting pressure hoses containing an external coating should be resistant to 100 test cycles for wear resistance without leaking. Following the test the hose should stand up to a 2-minute tightness and resistance-to-working-pressure test. During the resistance-towear test the hose should be filled with water at a pressure of 5 bar and should revolve around its own axis at a speed of 27 revs/min. The shoulder with the 60 granularity abrasive paper should be pressed against the surface of the hose with 105 N pressure and moved in the form of reciprocating action along the hose axis with a speed of 18 to 20 mm/second on a 80 mm road, in that the time that the shoulder remains at the turning point is not more than 0.1 second. 3.2.3.8. Resistance to high temperature Fire-fighting pressure hoses with external coating should be tested for resistance to flames. A tested hose filled with water at 0.05 bar pressure should stand up to the flame resistance test without any leaking for at least 20 seconds. The heat source should come from a Bunsen burner using propane-butane gas with pressure of 0.1 bar. After turning off the burner the flame (providing that the sample is burning), should go out after not more than 3 seconds. Page 6 / 7
SCIENTIFIC AND RESEARCH CENTRE FOR FIRE PROTECTION CNBOP CERTIFICATION DEPARTMENT YOUR PARTNER IN BUILDING THE QUALITY GENERAL INFORMATION Certification Department placed in CNBOP has a certificate of accreditation issued by Polish Centre of Accreditation No. AC 063 CNBOP is also a notified body in European Union (NB no. 1438) in the scope of: Directive 89/106/EEC Construction Products Directive 89/686/EEC Personal Protective Equipment The range of CNBOP notification covers 37 harmonized standards. CNBOP performs testing and European certification of: 1. Protective clothing for firemen 2. Fire detection and fire alarm systems EN 54-2 Control and Indicating Equipment EN 54-3 Fire alarm devices Sounders EN 54-4 Power supply equipment EN 54-5 Heat detectors - Point detectors EN 54-7 Smoke detectors. Point detectors using scattered light, transmitted light or ionization EN 54-10 Flame detectors Point detectors EN 54-11 Manual call points EN 54-12 Smoke detectors Line detectors using an optical light beam EN 54-17 Short-circuit isolators EN 54-18 Input/output devices EN 54-20 Aspirating smoke detectors EN 54-21 Alarm transmission and fault warning routing equipment EN 14604:2005 Smoke alarm devices 3. Voice alarm systems EN 54-16 Voice alarm control and indicating equipment EN 54-24 Components of voice alarm systems Loudspeakers 4. Smoke and heat control systems EN 12101-10 Power supplies 5. Fixed firefighting systems EN 12094-1 Control and indicating devices EN 12094-2 Non-electrical automatic control and delay devices EN 12094-3 Manual triggering and stop devices EN 12094-4 Container valve assemblies and their actuators EN 12094-5 High and low pressure selector valves and their actuators EN 12094-6 Non-electrical disable devices EN 12094-7 Nozzles for CO2 systems EN 12094-8 Connectors EN 12094-9 Special fire detectors EN 12094-10 Pressure gauges and pressure switches EN 12094-11 Mechanical weighing devices EN 12094-12 Pneumatic alarm devices EN 12094-13 Check valves and non-return valves EN 12259-1 Sprinklers EN 12259-2 Wet alarm valve assemblies EN 12259-3 Dry alarm valve assemblies EN 12259-5 Water flow detectors EN 13565-1 Foam systems components EN 671-1 Hose reels with semi-rigid hose EN 671-2 Hose systems with lay-flat hose 6. Fire Hydrants EN 14339 Underground fire hydrants EN 14384 Pillar fire hydrants 1438 CNBOP performs testing and domestic certification of: 1. Fire alarm systems Service panels for fire brigade Remote signalling and service devices Spark extinguishing control panels Linear heat detector Multisensor detectors Detector bases Detectors in wind-shields 2. Control the discharge of heat and smoke exhaust fire Control panel Manuals buttons for smoke vent systems Line and rotary electromechanical drivers Electromagnetic and reverse flow actuator 3. Integration systems of fire protection equipment Incoming signal interface 4. Fixed gas firefighting systems (carbon dioxide, inert gases and their mixture, chlorinated hydrocarbons) 5. Fixed water mist extinguishing systems 6.Component of sprinkler and water spray systems Fire pumps Alarm valve assemblies (not covered by EN-12259-2 or EN 12259-3) Sprinklers ( not covered by EN 12259-1) Deluge valves Nozzles, sprayers, drenchers Pipe couplings, mechanical tees Plastic pipes for sprinkler systems Pipe hangers (pipe clamps, fixing brackets, tipping dowels) Pressure switches 7. Oxygen reduction systems