hydrostatic inflow test report the lifespan system · hydrostatic inflow test report ... page 3...

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Hydrostatic Inflow Test Report

The Lifespan System®

May 14, 2014


Contents

Page 3 Hydrostatic Test Report

Page 4 Pictures of Hydrostatic Test


24” LIFESPAN INFLOW TEST May 14, 2014 Test A02 Purpose: The purpose of this test is to determine if the 24” Lifespan System Assembly will withstand an inflow pressure of 15psi (34 feet head). Note: A 24” Lifespan System Assembly consists of 2 grade rings, 1 frame and 1 composite cover. A gasket is fitted between the Lifespan frame and the composite manhole cover. Three bolts sealed with nylon washers over steel washers over rubber washers attach the manhole cover to the Lifespan frame. Procedure: (Refer to Lifespan Installation Instructions for details regarding steps 1 through 8)

1. Apply 2 continuous beads of adhesive on bottom surface of first 24” Lifespan Grade Ring as shown in figure 1.

2. Install the first 24” Lifespan Grade Ring into the pressure test chamber ensuring full contact between the mating surfaces of the Lifespan Grade Ring and the inner concrete surface of the pressure test chamber.

3. Apply 2 continuous beads of adhesive in groove of first 24” Lifespan Grade Ring as shown in figure 1.


4. Cross section of Lifespan assembly showing position of adhesive FIGURE 1

5. Install the second 24” Lifespan Grade Ring on top of the first 24” Lifespan Grade Ring ensuring full contact between the mating surfaces.

6. Apply 2 continuous beads of adhesive in groove of second 24” Lifespan Grade Ring. See fig. 1

7. Install the 24” Lifespan frame on top of the second 24” Lifespan Grade Ring ensuring full contact between the mating surfaces.

8. Install 24” Lifespan Frame gasket in 24” Lifespan Frame.


9. Install 24” Lifespan Cast Iron Cover into Frame and torque down all 3 bolts to 30ft-lb.

10. Fill pressure test chamber with water ensuring 24” Lifespan System Assembly is completely submerged.

11. Seal the pressure test chamber with steel cover. 12. Pressurize the test chamber to 15 psi and hold the pressure for 48

hours. 13. Review 24” Lifespan System Assembly for any leaks.

Observation: All inspections that took place showed no evidence of water leakage at any time during the test. Conclusion: Based on these test findings I am confident the Lifespan System Assembly with this method of attachment would be watertight for sustained periods at 15 psi. water pressure provided proper installation instructions are followed. Wayne Taylor, B.Sc. New Product Development Hamilton Kent Toronto, Ontario


Step 9: The lifespan assembly submerged in water in the test chamber.


Step 11: Pressure gauge showing 15 psi.


Air regulator to maintain constant 15 to 17 psi. over water.


Step 12: Pictures showing completely dry under lid and inside frame.


Completely dry floor under test unit.


Step 10: View of pressure test chamber with steel cover installed.

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