Boiler - what is it?
A boiler is a closed vessel in which water or other fluid is heated. The fluid does not necessarily boil. (In North America the term "furnace" is normally used if the purpose is not actually to boil the fluid.) The heated or vaporized fluid exits the boiler for use in various processes or heating applications,12 including water heating, central heating, boiler-based power generation, cooking, and sanitation.
Źródło: https://en.wikipedia.org/wiki/Boiler
Types of hydraulic works
Plumber in carrying out their tasks running in different rooms and at different heights. He should, therefore be sure of their safety. To ensure the safety of its employees are also required hydraulic company directors. Often the work performed by plumbers are repairing leaking taps and cisterns, as well as washing machines and boilers. However, large hydraulic projects are associated with the performance of water and sewage networks in homes and apartment buildings, as well as all other public buildings. In carrying out their work with builders plumbers and even the fire brigade. Sometimes plumbers deal with lecturing tiles in bathrooms and kitchens.
Pumping water from premises
When performing major plumbing work you may need to help more people, such as team building and team brigade. Firefighters make pumping water from flooded premises to be able to enter them plumbers and begin repair work. In the event of failure of the hospital or school plumbers they will also collaborated with the hospital staff, who will want to make evacuation unit, which can be flooded or school staff willing to ensure the safety of their students. Sometimes the conduct plumbing work will also be present police who protect eg. A flooded part of the city in front of outsiders, that may hinder the performance of plumbing work.