API 653 CERTIFICATION CLOSED BOOK |
QUESTIONS AND VERIFIED ANSWERS |
COMPREHENSIVE STUDY GUIDE | A+ STUDY
RESOURCE | BRAND NEW 2026/2027 UPDATE
2025/2026 Q&A | Instant Download PDF
Core Domains Covered:
• API 653 Standard Overview & Scope (12 questions)
• Tank Inspection Intervals & Frequencies (10 questions)
• Corrosion Evaluation & Minimum Thickness Calculations (12
questions)
• Tank Settlements & Out-of-Plumbness (10 questions)
• Tank Repairs & Alterations (12 questions)
• Welding & NDE Requirements (10 questions)
• Floating Roofs & Tank Appurtenances (10 questions)
• Confined Space Entry & Safety (10 questions)
• Hydrostatic Testing & Hot Tapping (10 questions)
• Fitness-for-Service & Remaining Life (9 questions)
API 653 STANDARD OVERVIEW & SCOPE
Question 1:
Which standard governs the inspection, repair, alteration, and reconstruction
of aboveground storage tanks?
A. API 570
B. API 510
,C. API 653
D. API 579
Answer: C. API 653
Rationale: API Standard 653 is specifically titled "Tank Inspection, Repair,
Alteration, and Reconstruction" and is the governing code for aboveground
storage tanks. API 570 covers piping inspection, API 510 covers pressure
vessel inspection, and API 579 covers fitness-for-service.
Question 2:
Atmospheric storage tanks are defined as tanks designed to withstand an
internal pressure of:
A. Up to 15 psi gauge
B. Up to 2.5 psi gauge
C. Up to 5 psi gauge
D. Up to 0.5 psi gauge
Answer: B. Up to 2.5 psi gauge
Rationale: API 653 defines atmospheric storage tanks as those designed
to withstand an internal pressure up to but not exceeding 2.5 psi gauge.
Question 3:
API 653 covers which of the following types of tanks?
A. Carbon and low alloy steel tanks built to ASME Section VIII, Div. 1
B. Carbon and low alloy steel tanks built to ASME Section X
C. Carbon and low alloy steel tanks built to API 650 and API 12C
D. Carbon and low alloy steel tanks built to API 510
Answer: C. Carbon and low alloy steel tanks built to API 650 and API
12C
Rationale: API 653 covers carbon and low alloy steel tanks built to API
650 and API 12C. It applies to aboveground storage tanks that have been
constructed to these standards.
,Question 4:
Which of the following is NOT within the scope of API 653?
A. Repair
B. Alteration
C. Operation
D. Reconstruction
Answer: C. Operation
Rationale: API 653 provides requirements for inspection, repair,
alteration, and reconstruction of aboveground storage tanks, but not for
operation. Operational requirements are covered by other standards and
procedures.
Question 5:
API 653 provides requirements for construction of which of the following?
A. Process pressure vessels
B. This standard does not provide construction requirements
C. LNG storage spheres
D. Aboveground petroleum storage tanks
Answer: B. This standard does not provide construction
requirements
Rationale: API 653 does not provide construction requirements for new
tanks. New tank construction is governed by API 650 or API 12C. API 653
applies to in-service tanks for inspection, repair, alteration, and
reconstruction.
Question 6:
API Standard 653 applies to tanks that have been:
A. Built to ASME Section VIII
B. Built and placed in service
, C. Designed but not yet constructed
D. Only new tanks
Answer: B. Built and placed in service
Rationale: API 653 only applies to tanks that have been built and placed
in service.
Question 7:
The scope of API 653 is limited to all of the following EXCEPT:
A. Tank foundation
B. Tank bottom
C. Tank roof
D. Tank mixing motor
Answer: D. Tank mixing motor
Rationale: API 653 covers the tank foundation, bottom, shell, and roof,
but not tank mixing motors. Auxiliary equipment such as mixers, pumps, and
piping are outside the scope of API 653.
Question 8:
In the application of requirements for welding, design, and materials of API
650 or API 12C to in-service aboveground storage tanks, which standard takes
precedence?
A. ASME Section VIII
B. API 12C
C. API 653
D. API 650
Answer: C. API 653
Rationale: When applying API 650 or API 12C requirements to in-service
tanks, API 653 takes precedence for inspection, repair, alteration, and
reconstruction activities.
QUESTIONS AND VERIFIED ANSWERS |
COMPREHENSIVE STUDY GUIDE | A+ STUDY
RESOURCE | BRAND NEW 2026/2027 UPDATE
2025/2026 Q&A | Instant Download PDF
Core Domains Covered:
• API 653 Standard Overview & Scope (12 questions)
• Tank Inspection Intervals & Frequencies (10 questions)
• Corrosion Evaluation & Minimum Thickness Calculations (12
questions)
• Tank Settlements & Out-of-Plumbness (10 questions)
• Tank Repairs & Alterations (12 questions)
• Welding & NDE Requirements (10 questions)
• Floating Roofs & Tank Appurtenances (10 questions)
• Confined Space Entry & Safety (10 questions)
• Hydrostatic Testing & Hot Tapping (10 questions)
• Fitness-for-Service & Remaining Life (9 questions)
API 653 STANDARD OVERVIEW & SCOPE
Question 1:
Which standard governs the inspection, repair, alteration, and reconstruction
of aboveground storage tanks?
A. API 570
B. API 510
,C. API 653
D. API 579
Answer: C. API 653
Rationale: API Standard 653 is specifically titled "Tank Inspection, Repair,
Alteration, and Reconstruction" and is the governing code for aboveground
storage tanks. API 570 covers piping inspection, API 510 covers pressure
vessel inspection, and API 579 covers fitness-for-service.
Question 2:
Atmospheric storage tanks are defined as tanks designed to withstand an
internal pressure of:
A. Up to 15 psi gauge
B. Up to 2.5 psi gauge
C. Up to 5 psi gauge
D. Up to 0.5 psi gauge
Answer: B. Up to 2.5 psi gauge
Rationale: API 653 defines atmospheric storage tanks as those designed
to withstand an internal pressure up to but not exceeding 2.5 psi gauge.
Question 3:
API 653 covers which of the following types of tanks?
A. Carbon and low alloy steel tanks built to ASME Section VIII, Div. 1
B. Carbon and low alloy steel tanks built to ASME Section X
C. Carbon and low alloy steel tanks built to API 650 and API 12C
D. Carbon and low alloy steel tanks built to API 510
Answer: C. Carbon and low alloy steel tanks built to API 650 and API
12C
Rationale: API 653 covers carbon and low alloy steel tanks built to API
650 and API 12C. It applies to aboveground storage tanks that have been
constructed to these standards.
,Question 4:
Which of the following is NOT within the scope of API 653?
A. Repair
B. Alteration
C. Operation
D. Reconstruction
Answer: C. Operation
Rationale: API 653 provides requirements for inspection, repair,
alteration, and reconstruction of aboveground storage tanks, but not for
operation. Operational requirements are covered by other standards and
procedures.
Question 5:
API 653 provides requirements for construction of which of the following?
A. Process pressure vessels
B. This standard does not provide construction requirements
C. LNG storage spheres
D. Aboveground petroleum storage tanks
Answer: B. This standard does not provide construction
requirements
Rationale: API 653 does not provide construction requirements for new
tanks. New tank construction is governed by API 650 or API 12C. API 653
applies to in-service tanks for inspection, repair, alteration, and
reconstruction.
Question 6:
API Standard 653 applies to tanks that have been:
A. Built to ASME Section VIII
B. Built and placed in service
, C. Designed but not yet constructed
D. Only new tanks
Answer: B. Built and placed in service
Rationale: API 653 only applies to tanks that have been built and placed
in service.
Question 7:
The scope of API 653 is limited to all of the following EXCEPT:
A. Tank foundation
B. Tank bottom
C. Tank roof
D. Tank mixing motor
Answer: D. Tank mixing motor
Rationale: API 653 covers the tank foundation, bottom, shell, and roof,
but not tank mixing motors. Auxiliary equipment such as mixers, pumps, and
piping are outside the scope of API 653.
Question 8:
In the application of requirements for welding, design, and materials of API
650 or API 12C to in-service aboveground storage tanks, which standard takes
precedence?
A. ASME Section VIII
B. API 12C
C. API 653
D. API 650
Answer: C. API 653
Rationale: When applying API 650 or API 12C requirements to in-service
tanks, API 653 takes precedence for inspection, repair, alteration, and
reconstruction activities.
