Hose Reel System

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Functions of the Hose Reel

 

When a fire first breaks out, the hose reel system is intended for occupants to use during the early stages of a fire. A hose reel system consists of a few components, such as the hose reel itself, hose reel pump, hose reel water storage tank, pipes and valves.

Design of the hose reel system shall comply with MS1489: Part 1 – Fire Extinguishing Installations and Equipment: Part 1: Hydrant Systems, Hose Reels and Foam Inlets.

 

Does My Building Require A Hose Reel System?

 

The requirements for each building are listed in UBBL 1984 under the Tenth Schedule Table of Requirements for Fire Extinguishment Alarm Systems and Emergency Lighting. Referring to the second column, if the letter G is present, then Hose Reel is required.

 

 

Notes regarding the above Figures adapted from UBBL 1984 are as follows:

The letters in the second column of this Schedule refer to the types of fixed extinguishing systems, as follows:
A – Automatic Sprinklers.
B – Water Spray System.
C – High Expansion Foam System.
D – Carbon dioxide system.
E – Approved Halogenated Extinguishing System.
F – Other Automatic Extinguishing System.
G – Hose Reel.
H – Hydrant System.

The figures in the third column of this Schedule refer to the types of fire alarms, as follows:
1. Automatic Fire Detectors System.
2. Manual Electrical Fire Alarm System.
3. Signal Indicator Alarm System.
4. Manual Alarm System.

 

Design for the Hose Reel

 

Each hose reel must be placed 30 metres away from the next hose reel. On top of that, one hose reel should be provided with every 800 m2 of usable floor space. The hose reel should be located at positions such as, near a fire escape route or at a staircase. Hose reels should preferably be stored in a recessed closet.

 

Each hose reel should discharge a minimum of 30 Litres per Minute (LPM) with a jet throw distance of 6 metres. The hose reel’s rubber hoses are 30 metres in length with a 25 mm diameter. The nozzle of the jet and spray shall have a diameter of 8 mm.

 

Piping for the hose reel shall be of galvanised steel medium grade (Class B) for above ground pipes and heavy grade (Class C) for underground pipes. The pipework for the hose reel is usually 50 mm in diameter, and the feed to the individual hose reel shall not be less than 25 mm in diameter.

 

Design for the Hose Reel Pump

 

There should be 2 hose reel pumps. One on duty and one on standby. The pump must deliver a flow capacity of 120 LPM at a running pressure of not less than 2 bars for any 4 hose reels operating at the same time.

 

The standby hose reel pump should be powered by the emergency generator or genset. If the pump is diesel engine driven, sufficient fuel supply should enable operation for a minimum of 1 hour.

 

Electrical cabling to supply the hose reel pumps shall be in galvanised steel conduit. The batteries for the diesel engine shall be maintenance-free type.

 

Hose reels should be located in a pump room equipped with adequate natural or mechanical ventilation. The hose reel pumps should be protected from external weather and from flood-prone locations.

 

Design for Hose Reel Tanks

 

The hose reel water storage tank shall be 2,275 Litres for the first hose reel and additional 1,137.5 Litres for every additional hose reel. The maximum water tank size shall be 9,100 Litres for each hose reel system. This means, that if you have more than 7 hose reels in a system, your tank size needs to be 9,100 Litres.

 

Hose reel tanks shall be fibreglass reinforced polyester (FRP) or Concrete. Pressed steel tanks where used should be hot dipped galvanised and coated internally with bituminous paint to prevent corrosion. The tank should be compartmented with a water level indicator showing the water level in the tank.

 

The external surface of the tank should be painted red. Where this is not desirable, a red band of a  minimum of 200 mm shall be painted outside to indicate that this is a fire tank.

 

The incoming pipe from the town’s main to the hose reel tank(s) shall have a minimum diameter of 50 mm.

 

Design for Hose Reel Pump Starter Panels and Controls

 

The hose reel pump shall be able to start and stop manually. The hose reel pumps shall start automatically based on the actuation of the pressure switches. Usually two pressure switches are provided with the following suggested settings:
(i) Duty pumpset start and stop at 80% and 100% of the system pressure, respectively.
(ii) Standby pumpset start and stop at 60% and 100% of the system pressure, respectively.

Diesel pumpsets should have the capabilities to start automatically and only be stopped manually.

 

Our M&E Consultant Solutions

 

As M&E consultants, our solutions for Hose Reel System include:

  • Design of Hose Reel System
  • Schematic diagram of Hose Reel System
  • Professional Engineer (PE) endorsement
  • BOMBA inspection and approval of Hose Reel System

 

Perunding JW is an M&E Consulting firm based in Malaysia. If you are looking for more information or resources, reach out to our team of engineers. We will gladly assist you. Visit our homepage or call us at +603 7955 5918.

 

References

[1] Street, Drainage And Building Act 1974 [ACT 133] Uniform Building By-Laws 1984, 1985.

Hose Reel System

Hose Reels are meant for occupants to fight fire in its early stages.