API SIFE - Source Inspector Fixed Equipment Practice Questions — 10 Free (2026)

To what precision can the Vernier system measure, per API 577?

• A. 0.1 in.
• B. 0.01 in.
• C. 0.001 in.
• D. 0.0001 in. ✓
• E. 0.00001 in.

Clause 8.2.2.3. Protractors, the gear tooth, depth and height gauges, micrometers and calipers all carry the Vernier system. API 577, 8.2.2.3

The equipment manufacturer has supplied no calibration procedures. Who writes them, per API 578 clause 6.5.3?

• A. The third-party inspection agency
• B. The fabricator
• C. The PMI technician performing the test
• D. The owner/operator ✓
• E. The equipment manufacturer, who retains responsibility for the performance of the instrument in service

Clause 6.5.3 places the duty on the owner/operator when the manufacturer has not provided calibration procedures. API 578, 6.5.3

Per API 572, what is the relationship between an examination point and a CML?

• A. It sits inside a CML, pinpointing a narrower spot ✓
• B. The CML is the narrower spot, sitting inside an examination point
• C. The two terms are used interchangeably in this document
• D. An examination point replaces the CML once thickness data is recorded
• E. An examination point is a designated area containing one or more condition monitoring locations

Clause 3.1.11. A vessel nozzle may be a CML containing multiple examination points, one in each quadrant. API 572, 3.1.11

Per API 588, the experienced Level 3 SI will be able to handle which equipment types?

• A. Only pressure vessels and shop-fabricated piping
• B. Shop-fabricated piping, packaged equipment, and complex mechanical fixed equipment ✓
• C. Only equipment assigned the lowest risk ranking
• D. Only equipment for which a resident inspection level has been specified
• E. Complex mechanical fixed equipment and packaged equipment, but not rotating equipment under any circumstances

Clause 5.2.4. Electrical equipment and rotating equipment packages may also fall within the SI competence, depending where their expertise lies. API 588, 5.2.4

In the successive DBB test at high pressure on the closure, how does pressure get applied, per API 598?

• A. One side at a time, the opposite side left at atmospheric ✓
• B. Both sides of the closure at once, through the valve bore
• C. To the body cavity only, with both ends at atmospheric pressure
• D. To the upstream side only
• E. One side at a time, the opposite side held at low-pressure closure test pressure

Clause 6.6. Leakage into the body cavity is checked through the opening in the bottom of the valve. API 598, 6.6

Per SNT-TC-1A clause 8.2.2, when should the color-contrast differentiation examination be conducted?

• A. Annually
• B. Upon initial certification only
• C. Upon initial certification and at five year intervals thereafter ✓
• D. At three year intervals after initial certification
• E. Upon initial certification and at five year intervals, and additionally on each change of employer

Clause 8.2.2. The examination should demonstrate the capability of distinguishing and differentiating contrast among colors or shades of gray used in the method as determined by the employer. ASNT SNT-TC-1A 2024, 8.2.2

Per ASME B16.5, what is the consequence of combining values from the two systems of units?

• A. It is permitted provided the conversion is stated on the certificate
• B. It is permitted where the resulting value is more conservative
• C. The Standard treats it as nonconformance in every case, without exception
• D. The Standard treats it as nonconformance, save where the purchaser has agreed otherwise
• E. The Standard treats it as nonconformance, bolt and flange bolt hole diameters aside ✓

Paragraph 1.6. Neither system converts exactly into the other, which is why each has to be used on its own. ASME B16.5, 1.6

Per ASME Section VIII Division 1, when shall the hydrostatic test be conducted on a vessel?

• A. Before final fabrication so that any leakage can be repaired
• B. Once fabrication is finished and examinations are done, apart from operations and examinations that cannot happen until after the test ✓
• C. After fabrication but before any nondestructive examination is performed
• D. At any point agreed between the Manufacturer and the Inspector
• E. Once all fabrication has been finished and every examination performed, with no exception whatever permitted to that stated sequence of operations

UG-99(a). Weld end preparation and cosmetic grinding that does not reduce thickness below the design thickness are given as examples of permitted post-test operations. ASME BPVC Section VIII, Division 1, UG-99

Per SSPC-SP 5/NACE No. 1, the joint standard was reaffirmed in 2006 by which bodies?

• A. Task Group A of SSPC and NACE, covering abrasive blast cleaning, on its own
• B. Unit Committee T-6G of NACE, covering surface preparation, on its own
• C. The AMPP Standards Committee 05 on Surface Preparation
• D. NACE Specific Technology Group 04, on surface preparation, with SSPC own Surface Preparation Committee ✓
• E. The Surface Preparation Committee of SSPC with Unit Committee T-6G of NACE, covering abrasive blast cleaning

The Foreword. Task Group A and Unit Committee T-6G were responsible for the original 1994 preparation and the 2000 reaffirmation. SSPC-SP 5/NACE No. 1, Foreword

An organization holds responsible operational control over its production welding. What must its WPS be, per ASME Section IX?

• A. A WPS qualified by any organization within the same corporate group
• B. A WPS qualified by the material manufacturer and supplied with the material
• C. Any AWS SWPS whatever, listed in Mandatory Appendix E or not
• D. Either qualified by that organization under Article II, or an AWS SWPS that Mandatory Appendix E lists and Article V has been used to adopt ✓
• E. One that has been qualified by that same organization under Article II, or alternatively any AWS SWPS whatever that has been adopted under Article V

QW-101. Two conditions bind the SWPS together: adoption under Article V and listing in Mandatory Appendix E. ASME BPVC Section IX, QW-101