SB Broneske Solution

Vs. Anchorage Point Solution

SB Broneske Solution

Patented in 1973, the idea of the SB Broneske Solution:

Exhaust gas pipes on board ships are usauall supprted by fixed points and anchorage points. Between pipe sections, pipe expansion bellows, so-called compensators, are used to compensate the thermal expansion. The SB Broneske solution consists of the idea that each pipe section is supported by a fixed point (= two fixed point vibration mounts) and one or more horizontal anchorage points.

In this solution, the exhaust pipe expands in a controlled manner and is stabilized by the anchorage points. In this case, the anchorage points allow thermal expansion. Between the pipe sections, exhaust gas compensators are placed, which enable and compensate the thermal expansion of the pipe ends. This solution requires some experience to calculate the vibrations and thermal expansion.

SB Broneske Solution: No thermal expansion damages the anchorage points - no uncontrolled movement in rough seas!  

Remember that in some regions of the world there are still some shipyards using a different system called Anchorage Point Solution. This Solution, for example, uses only anchorage points or redominantly anchorage points. These anchorage points are usually installed at an angle of 45° and the pipe sections are hanging in these anchorage points. 

Unfortunately the Anchorage Point Solution has two disadvantages:

1. Uncontrolled movement in rough seas
The Anchorage Point Solution enables and promotes movements of the exhaust pipe system. The pipes can swing around the anchorage points. The reason is the missing fixation of the pipe section. This damages the exhaust compensators and the pipe section. Anchorage points can break off.

uncontrolled movement

2. Thermal expansion damages the anchorage points
The thermal expansion takes place between two anchorage points, pressing the anchorage points apart and damaging them. The inventor of this solution may have thought that the thermal expansion might counteract the weight force. But in many installations we observe that the anchorage points are simply pressed apart. Motivation of the shipyard: The shipyard thus saves design costs and material and manufacturing costs for brackets

thermal expansion

SB Broneske Solution: No thermal expansion damages the anchorage points - no uncontrolled movement in rough seas!

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