Hi Chet,
1) There are absolutely no changes nor any denigration to the weld zone when Spatter Shield is used according to the Manufacturers directions. This has been verified through independent laboratory testing performed by the Japan Welding Technology & Qualification Center. The following tests were conducted: Visual, X-ray Inspection, Tensile, Bending, Macro and Fracture. Their conclusion on all of these tests was that Spatter Shield had no adverse impact on the joint. If you would like a copy of this test, one can be made available to you by contacting your local rep (or a Spatter Shield tech staff member) via our website www.spattershieldnorthamerica.com.
2) A copy of the MSDS may be downloaded from the website at http://www.spattershield.com/downloads/Spatter%20Shield%20-%203193%20MSDS%20USA%20606.PDF. In this document you'll notice that the Hazard Ratings have all been classified in the Min/Nil=0 to Low=1 Levels which qualifies as extremely safe. In addition to the MSDS sheets, we also provide specific install and handling manuals along with product training with our installations. If there are any questions after reviewing the MSDS sheet, we would be more than pleased to address them.
3) Since our fluid does not have any affect on the mechanical properties or chemical composition of the weld and parent metals, I don't believe there needs to be any change made to the PQR. Although just to be on the safe side, it would be a good idea to mention in the WPS that an inline anti-spatter system was used just for records sake.
I hope this helps and please dont hesitate to contact our staff at Spatter Shield North America for any further queries, or to visit our website as stated above.
Regards,
Pascal Hatzipalousis