[RE-wrenches] Microfractures in PV Modules

Christopher Warfel cwarfel at entech-engineering.com
Sat Oct 4 10:46:54 PDT 2014


No, this is a third party quality assurance inspector for a rate payer 
funded program. The issue is most likely proper use of ratepayer funds 
towards these projects.  I would think that the AHJ wouldn't be 
concerned unless there was a safety issue My question is more along the 
lines of: is this a real issue, and if so, how does one see the defect?
On 10/4/2014 12:21 PM, jay peltz wrote:
> Hi Chris,
>
> Do you mean the AHJ?
>
> jay
>
>
> On Oct 4, 2014, at 8:20 AM, Christopher Warfel wrote:
>
>> Recently a inspector raised the issue of microfractures in pv modules, and that the existence of such fractures would require replacement of the modules and a failing of the system inspection. I found information from NREL confirming the existence of microfractures in poly crystalline.  However, I have not seen any information on how to detect them (ie, what they look like).  Does anyone have a reference that shows this, and is this a valid concern for the industry?  Thank you, Chris
>>
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>> -- 
>> Christopher Warfel, President
>> ENTECH Engineering, Inc.
>> PO Box 871, Block Island, RI 02807
>> 401-466-8978
>>
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-- 
Christopher Warfel, President
ENTECH Engineering, Inc.
PO Box 871, Block Island, RI 02807
401-466-8978




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