Pool Bonding test

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darylsama

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Hi,

I've just been placed in a position on a new job where the Government Electrical Engineering Dept. inspections are being carried out. However, the report shows that the bonding produced on the steel structure for the concrete pools are insufficient. This being ascertained by the insufficient quantity of exothermic welding produced. Since then the pools have been cast.

Is there any test i can perform where i can prove the integrity of the bonding is sufficient without trying to destroy the structure of the pool?

I look forward to your comments and hopefully a solution :confused:

thanks
 
darylsama said:
Hi,

.

Is there any test i can perform where i can prove the integrity of the bonding is sufficient without trying to destroy the structure of the pool?

I look forward to your comments and hopefully a solution :confused:

thanks
Click to expand...

You can't but a PE can for a fee.
 
Who and how did they determine it was insufficient?

There is no "test" that I am aware of but there are code requirements for the equipotential bonding grid in art. 680.26. There may be some additional requirements in the spec on your job as well.

I would put it back on them and say "show me". If they show you were you have not met code and/or the spec they you have to do whatever is required to meet the code and/or spec.

Review 680.26.
 
could you please elaborate ? are you referrring to the bonding equipotential grid ? (exothermic welding not required by NEC 680.26 B 1. ) I'm curious though, what do you mean by "insufficient quantity of exothermic welds" ? by means of visual inspection ?
 
(could you please elaborate ? are you referrring to the bonding equipotential grid ? (exothermic welding not required by NEC 680.26 B 1. ) I'm curious though, what do you mean by "insufficient quantity of exothermic welds" ? by means of visual inspection ?)


I'll try to answer the questions:

Yes i was talking about the actual cable connection to the steel structure of the pool which constitute bonded parts 680.26 (B), however our department requires that the steel be bonded exothermically which constitutes 680.26 (C)

The inspectors perform a visual inspection of the bonding (weld) on the steel. The wire used is laid across the length and breadth of the pool with intermittent welding across and along, and then returns to the pump etc... No test, done, just visuals.

Brian John:

Can you make me aware of the Test?

BTW guys Ill have to get one of your PE fly in to Barbados :grin:

I look for your soonest response.

thanks
 
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