When I took the test last year, I frantically scoured the net for study material. I found that AWS has two documents for study. I easily found the Quality Assurance study guide, but the NDT study Guide was alot harder to find.
https://app.aws.org/certification/cert1234.pdf Quality Study Guide SG-4
https://app.aws.org/certification/docs/cert4268.pdf NDT Study Guide
When I assembled my printed book (downloaded stuff) I printed the "Free Downloads" page and highlighted all the free downloads in my book (i.e. AWS B5.1, AWS QC1, AWS Z49...)
I also put the receipts in for each downloaded resource.
Here are some of the "Must Haves" in my opinion for the SCWI test. Be aware, that you may be a D1.1 GURU, but the answers are not from D1.1, they are directly from the books below...
SCWI-SG-4 Senior Certified Welding Inspector Study Guide – Section 4 Quality Assurance (Free Download)
ANSI Z49.1:2005 (AWS) Safety in Welding, Cutting, and Allied Products
AWS B2.1:2009 Specification for Welding Procedure and Performance Qualification
AWS B1.10:2009 Guide for the Nondestructive Examination of Welds
AWS B1.11:2000 Guide for the Visual Inspection of Welds
AWS B4.0:2007 Standard Methods for Mechanical Testing of Welds
AWS B5.1:2003 Specification for the Qualification of Welding Inspectors
AWS D10.4:1986 Recommended Practices for Welding Austenitic Chromium – Nickel Stainless Steel Piping and Tubing
ISO 9001 Quality Management Systems
ASNT SNT-TC-1A Recommended Practice: Personnel Qualification and Certification for Nondestructive Testing
I remember the test being intense on Heat Treat/Metallurgy, Nondestructive Testing, Qualification and Certification (Procedure, Welder, NDT), and Safety.
Don't be fooled, I thought this was an extremely hard test. I'm a certified ISO Lead Auditor, Lean Expert and Six SIgma Black Belt, ASNT Level III, and have 30 years of experience with ISO 9001, NDT, and Visual Inspection. Obtained my CWI in 2006.
and yes, I passed...but I'm not bragging about this score......