633 High rise firefighting

Question 1

How many controlled dividing breeching are allowed up to the bridgehead

Answer 1

Only one controlled dividing breeching should be used in a rising main. Where two separate
rising mains exist within the same building, the management and identification of branches
must be strictly controlled and communicated between sector commanders

Question 2

Can the dividing breeching be plugged in on the fire floor

Answer 2

• The dividing breeching should not be plugged in on the fire floor.
• The controlled dividing breeching should be plugged into the outlet of the risingmain on the floor below the fire and the first firefighting jet taken from the breeching
• The second jet (to protect the egress of firefighting crews) should be taken from the riser
outlet on the fire floor, in line with existing high rise procedure.
• The remaining vacant outlet of the dividing breeching should be used to provide a third
firefighting jet, should this be required.

Question 3

What is a high rise?

Answer 3

A high rise building, for the purposes of this procedure, may be defined as a building containing
floors at such a height or position that external fire fighting and rescue operations may not be
feasible

Question 4

What are the Hazards of high rise firefighting ?

Answer 4

(a) Building height, layout and design.
(b) Fire behaviour and development.
(c) Firefighting and rescue operations.