A standard Ordinary Hazard set could consist of the following:
- Diesel pumpset (including pump-end, diesel engine, 4 hour single-walled fuel tank, 24v Ni-Cad batteries and controller within a single skid)
- Electric Pumpset (including pump-end, electric motor and slide rails)
- Electric Pump controller (Star-delta starter with 4 volt-free contacts)
- Jockey Pump (Grundfos CR pump achieving a minimum of 1 bar over the closed valve pressure of the proposed duty pump)
- Remote Alarm Panel (for monitoring of signals remote from the pumphouse)
- Automatic supply change-over panels (used on twin electric pump installations to alternate two incoming supplies to each pump)
What standards is this equipment approved / compliant to?
- LPCB – Loss Prevention Certification Board
- BSEN12845 – fixed firefighting systems, automatic firefighting systems, design, installation and maintenance
- LPS1239 1.1 – requirements and testing procedures for the LPCB Approval and listing of diesel engines for sprinkler pump setsLPS1131 1.1 – requirements and testing methods for pumps for automatic sprinkler installation pump sets
When would I need an Ordinary Hazard set?
In the UK, each building has a designated hazard criterion that relates to the building usage and is defined by a relevant insurance body. If assigned to LPCB, then a hazard category is also assigned. There are three of these categories: light hazard, ordinary hazard and high hazard and they relate to the combustibility rating of the items within the building (for instance, a high combustibility would be considered a ‘High Hazard’).
Applications
Within the UK, each building is given a designation that is defined by a number of criteria and given a hazard category.
OH1
Typically: large schools and offices, hospitals, hotels, restaurants, libraries, dairies, cement works, sheet metal producers and abattoirs.
OH2
Typically: museums, bakeries, breweries, photographic labs and car workshops.
OH3
Typically: shopping centres, supermarkets, industrial processes and buildings with a highly combustible load.
Benefits
- All products are LPCB listed and approved to BSEN12845, ensuring that they follow the correct criteria giving peace of mind that they work effectively
- Electric motors are fitted on slide rails as standard for easy removal/replacement/repair by service teams, thereby curtailing costs
- Full range of end-suction pumps available to suit requirements of Table 16 in BS EN12845 as well as fully hydraulically calculated systems giving a wider range to suit individual selection requirements
- All pumps are fitted with an orifice plate as standard, meaning in the event of site growth/expansion orifice plates can be trimmed/tailored, thus negating the need for a new pump, saving cost and time
- Pumps are engineered, built and tested in Grundfos Sunderland, ensuring the product has passed all quality checks and achieved the duty parameters
- A wide selection of extra options and accessories are available including pump housing to facilitate the selection of the correct equipment
