Hi Technet members:
 
I am reviewing the current ESD practices at a OEM /EMS company which I have just joined couple months ago, and would like to seek for your expertise.
 
1.  The company uses epoxy pouring material +coating for the ESD floor.  According to the ESD hand book TR20.20, this type of ESD floor "DOES NOT" require maintenance.  How true is this statement?  If a customer ever challenge me on this, can I just direct him to the ESD handbook? (of course the point to point, point to ground resistances  has to be within the acceptable range)
 
 
2.  We use plastic tray to move assemblies between workstations with the whole facility which is considered as EPA.  ( I am assuming the tray material is dissipative material)   Is there anything we need to be aware of?  What if my assumption is wrong and the material turns out to be insulative? What can we we address this then?
 
3.  We put the BOM, assemblies, drawing on the tray along with the assemblies within the EPA area(  and I dont think they are ESD paper).  Is this acceptable practice as far as ESD concerns? Do we "have to" cover all the documents in dissipative sleeve? Even if we use the sleeve, the inspector will need to take the BOM and assembly drawing out during the actual inspection ( for the highlight and crossout), what can we do to prevent static from being generated? Will it be ok as long as the inspector is grounded by wrist strap and heel strap?
 
4.  We are renting the ESD garment from an outside company. What kind of spec should they follow for the periodically inspection and laundry services when we return the garment to them? 
 
Thanks for the help.
 
Rudolph 
 
 
 
 
 
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