Description baout what x pump fire means:
The LFB, along with all other UK fire and rescue services, determines the size of a fire or special service by the final number of appliances mobilised to deal with it. For example, two appliances are despatched to a "B" risk area in response to a fire call in a residential house. The officer-in-charge can request additional appliances by transmitting a radio message such as, "make pumps 4", or if persons are believed to be involved or trapped, "make pumps 4, persons reported".[36] The control room will then deploy a further two appliances making a total of four. Informally, firefighters refer to such fires as 'a make up' or 'a 4-pumper'; [37] when the fire is out, if no other pumping appliances were despatched, this would be recorded as a '4-pump fire'.
If an incident is more serious, it can be escalated straight to a 6-, 8- or 10-pump fire and beyond ? in London this is usually completed in even numbers, though it is not uncommon for a 10-pump fire to be 'made up' to 15 if necessary. A call to, say, a large warehouse ablaze could be escalated straight to a 10-pump fire. The 2007 Cutty Sark fire required 8 pumps;[38] as a serious incident escalates, the brigade deploys senior officers, Command Units and any specialist appliances required.
Examples of 25-pump fires include the blaze at Alexandra Palace in 1980,[39] and at The Royal Marsden Hospital, Chelsea, in 2008, the latter also involving four aerial appliances. The King's Cross fire was a 30-pump fire,[40] as was the blaze at Oxford Street shops on 26 April 2007. Pumping appliances can only operate with a minimum crew of four, and a maximum of six (although this is rare) so it is possible, theoretically, to work out the number of firefighters attending an incident by multiplying the number of pumps by five. For example, the Cutty Sark fire was described as "an 8-pump fire attended by 40 firefighters".