Water Main Increase: 80mm to 150mm - Pressure Breaks?

In summary, there is uncertainty about whether the reduced pressure drop in the new PVC pipe will cause the remaining old asbestos pipe to rupture. The old pipe has previously ruptured multiple times due to its age and deterioration, but it is unclear if the remaining section has also ruptured. It is also unclear if the replacement of the remaining old pipe is being planned.
  • #1
Breakorburst
2
0
Was wondering whether a 2 kilometre section of 80mm asbestos water main was replaced with 150mm PVC then rejoined into the last 3 kilometres of old asbestos would it create pressure breaks. The head pressure is 50 metres. Cheers.
 
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  • #2
If you're asking whether the reduced pressure drop in the new PVC pipe will increase the pressure in the old pipe enough to rupture it, it's hard to say. Did the replaced old pipe rupture? Was the remaining old pipe commonly subjected to the 50m head when flow was low?
 
  • #3
insightful said:
If you're asking whether the reduced pressure drop in the new PVC pipe will increase the pressure in the old pipe enough to rupture it, it's hard to say. Did the replaced old pipe rupture? Was the remaining old pipe commonly subjected to the 50m head when flow was low?
The old pipe has ruptured many times over the last year with the head pressure being constant with the low flow rate due to its age and deterioration, although the new larger diameter pipe has not been connected yet, it was just my thought that the old pipe would not handle the pressure once it was ?.
 
  • #4
Breakorburst said:
The old pipe has ruptured many times over the last year with the head pressure being constant with the low flow rate due to its age and deterioration, although the new larger diameter pipe has not been connected yet, it was just my thought that the old pipe would not handle the pressure once it was ?.
But has the remaining old pipe ever ruptured? Maybe it's lying in more stable soil. Anyway, I'd hope the replacement of the remaining old pipe is "in the works" awaiting funding.
 

Related to Water Main Increase: 80mm to 150mm - Pressure Breaks?

1. What is a water main increase?

A water main increase refers to the process of increasing the diameter of a water main pipe. This is typically done to improve water flow and pressure in a particular area.

2. Why is the increase from 80mm to 150mm?

The increase from 80mm to 150mm is significant because it doubles the diameter of the water main pipe. This results in a significant increase in water flow and pressure, allowing for more efficient delivery of water to homes and businesses in the area.

3. What is the purpose of a pressure break?

A pressure break is a mechanism used to regulate the pressure within a water main system. It helps to prevent water from flowing too quickly and causing damage to the pipes. It also helps to prevent water hammer, which can occur when there is a sudden change in water pressure.

4. How will this increase benefit the community?

This increase in the water main size will benefit the community in several ways. It will improve water flow and pressure, making it easier to access water for daily activities. It will also reduce the risk of water main breaks and improve the overall reliability and efficiency of the water system.

5. How long will it take to complete the increase?

The time it takes to complete the increase from 80mm to 150mm will vary depending on the specific project and location. Factors such as the length of the water main, accessibility, and potential obstacles can all impact the timeline. However, on average, it can take anywhere from a few weeks to a few months to complete this type of project.

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