Re: Stress analysis requirement for fire fighting pipelines

In summary, the conversation discusses the need for stress analysis for fire fighting pipelines in an engineering company in Abu Dhabi, UAE. One engineer initially stated that stress analysis is not necessary due to the still water and similar temperatures, but later it was determined that the piping system's weight, nozzle loads, and wind loads can also generate stress. Another engineer clarified that pipe stress analysis is required for pipes 5" and above, but not excluded for smaller pipes. It is also mentioned that Caesar software has most materials listed, but if not, allowable stresses for the specific material can be determined.
  • #1
chrismechy
1
0
Dear All,

I work in an engineering company here in Abu Dhabi, UAE.

Very recently, we have been asked by our clients to perform STRESS ANALYSIS FOR THE FIRE FIGHTING PIPELINES.

But my engineer initially said that for FIGHTING PIPELINES, stress analysis is not required as the water is going to remain still inside the pipes for a long time & also the ambient temperature & fluid temperature is almost the same. Sometime later he said that it is not possible for the line to be modeled in CAESAR (as the pipe material & Spec is not present in CAESAR)

Another engineer said that it shall only be performed for lines 5" & above. Below 5", analysis is not needed.

Can anyone please advice on this.

Thanks.

Chris
 
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  • #2
Pipe stress analysis is not just performed for thermal expansion due to a temperature difference. Other factors such as the weight of the piping system, imposed nozzle loads and displacement, and wind loads can generate pipe stress. Also, small pipes can generate stress too, so pipes under 5" are not excluded from pipe stress analysis.

Caesar has most of the materials in Piping Codes B31.1 and B31.3. If not listed, you could still use Caesar to figure the actual stresses and then you would need to determine allowable stresses for your particular material.
 

1. What is the purpose of conducting a stress analysis for fire fighting pipelines?

The purpose of conducting a stress analysis for fire fighting pipelines is to ensure that the pipelines can withstand the stress and pressure caused by high temperatures and rapid changes in temperature during a fire. This analysis helps to determine the appropriate materials and construction methods for the pipelines, ensuring their safety and functionality during a fire emergency.

2. How is stress analysis performed for fire fighting pipelines?

Stress analysis for fire fighting pipelines is typically performed using computer-aided design (CAD) software, which allows for accurate modeling and simulation of the pipelines under various stress and temperature conditions. The analysis takes into account factors such as the material properties, pipe diameter, and expected flow rates to determine the stress levels and potential failure points in the pipelines.

3. What codes and standards govern the stress analysis requirements for fire fighting pipelines?

The stress analysis requirements for fire fighting pipelines are governed by various codes and standards, including the National Fire Protection Association (NFPA) standards, International Building Code (IBC), and International Fire Code (IFC). These regulations outline the minimum requirements for the design, installation, and maintenance of fire fighting pipelines to ensure their safety and functionality.

4. Are there any specific considerations for stress analysis of fire fighting pipelines in different environments?

Yes, there are specific considerations for stress analysis of fire fighting pipelines in different environments. For example, in colder climates, the pipes may be subject to freezing temperatures, which can cause additional stress and potential failure. In these cases, additional insulation or heat tracing may be necessary to prevent damage to the pipelines.

5. What are the consequences of not conducting a stress analysis for fire fighting pipelines?

The consequences of not conducting a stress analysis for fire fighting pipelines can be severe. Without proper analysis, the pipelines may not be able to withstand the stress and pressure of a fire, leading to potential failure and loss of functionality. This can result in delays in fighting the fire, increased damage to the building or property, and potential harm to individuals in the vicinity. Additionally, failure to comply with codes and standards can result in legal and financial consequences for the building owner or responsible party.

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