I think NDTIII is referring to ANSI/AWS B2.1, which is titled "Standard Welding Procedure Specification (WPS)". I think this is where he picked up the abbreviation SWPS, but nowhere in the copy I have is it referred to as SWPS. It is only referred to as WPS. The copy I have was given to me by an AISC auditor in 1994 and is a "standard" WPS for C02 shielded flux cored welding. There are 31 supporting PQR numbers shown from which this standard WPS was derived from, which were reviewed and validated by the Welding Research Council. A D1.1 standard WPS is based on prequalified criteria in Section 3. To answer the original post, any WPS containing parameters beyond prequalified criteria of must be supported by a PQR, at least from a D1.1 stance.