CPCU Pipe Expansion & Contraction Case Study

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Project Info
  • Construction Date: August 2003
  • Location: Paris, France
  • Category: Case Studies & Pilot Projects
Project Details

Expansion & Contraction Study – ConduFill© CPCU | Paris, France Steam Line Expansion Verification Measurements were taken prior to the injection of ConduFill© on an expansion joint and a loop when a complete shutdown was performed on CPCU’s steam system in Paris, France. The shutdown took place from Aug. 22nd thru Aug. 25th, 2003. Expansion […]

More Project Details

Expansion & Contraction Study – ConduFill©

CPCU | Paris, France

  1. Steam Line Expansion Verification

Measurements were taken prior to the injection of ConduFill© on an expansion joint and a loop when a complete shutdown was performed on CPCU’s steam system in Paris, France. The shutdown took place from Aug. 22nd thru Aug. 25th, 2003.

  1. Expansion Joint Motion Verification

This expansion joint is located on the ALSTOM site between fixed point No. 5 and 6.

condufill_steam_pipe_injection_tst

  1. Loop Control

This loop is located on the ALSTOM site between the fixed points No. 4 and 5.

steam_pipe_restoration_cpcu_france_tst

  1. Control – ConduFill© Post Injection

The system was shut down from Friday, September 19th 2003 at 10h00 am until Monday,

September 22nd, 2003 at 10h00 am. The temperature was registered at 35°C. The entire loop located between fixed point No. 4 and fixed point No. 5 was completely filled with ConduFill©. The displacement of the expansion joint and the loop are identical to the displacement measured in August when we shut down the pre-foamed system. We verified the movement of the loop by cutting the foam (see photos below).

In photo #1 below, the void between the steam pipe and the insulation was generated by the

displacement of the cooling steam pipe. When the system was turned back on, the steam pipe moved back to its original location as shown in photos 2 and 3 when the system is reaching 2 bars and 15 bars respectively. Also note that in all three photos, the ConduFill© and the existing mineral wool (dark brown) appear to be compressed.

buries_steam_repair_cpcu_case_study_tst

CPCU Pipe Expansion and Contraction Test

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