Texas Boiler Inspector Licensing Exam Prep Document |
2026/2027 Edition | 250 Verified Questions
Texas Boiler Inspector Licensing Exam 2026-2027 QUESTIONS AND ANSWERS ALREADY
GRADED A+. 100% Verified Solutions | Updated Per Latest Guidelines | Graded A+
This comprehensive study guide contains 250 verified questions and answers for the Texas Boiler
Inspector Licensing Exam, updated for the 2026-2027 academic year. It covers all key topics including
boiler design, operation, maintenance, inspection procedures, and relevant ASME codes. Each question
is accompanied by a detailed rationale and distractor explanations to reinforce learning. Ideal for
candidates seeking a high score on the licensing exam.
Key Features:
Boiler design and construction principles
Inspection procedures and safety protocols
ASME Boiler and Pressure Vessel Code compliance
Fuel systems and combustion efficiency
Water treatment and steam system management
Regulatory requirements and recordkeeping
Updates for 2026:
- Updated to reflect 2026 ASME Code revisions
- Added new questions on digital inspection tools
- Revised rationales for clarity and accuracy
- Included recent regulatory changes from Texas Department of Licensing and Regulation
- Enhanced distractor explanations to address common misconceptions
Abstract:
This document is a meticulously curated collection of 250 exam-style questions and answers designed for
candidates preparing for the Texas Boiler Inspector Licensing Exam. The content is aligned with the latest
2026-2027 exam blueprint and covers all domains: boiler design, operation, maintenance, inspection, and safety.
Each question includes a correct answer, a detailed rationale explaining the underlying principles, and distractor
analysis to clarify why incorrect options are wrong. The material draws from ASME Boiler and Pressure Vessel
Code, National Board Inspection Code, and Texas state regulations. Special emphasis is placed on practical
inspection scenarios, code application, and hazard identification. This resource is intended for self-study and can
be used to assess readiness, identify weak areas, and build confidence. The questions are verified for accuracy by
subject matter experts and reflect the most current industry standards. By mastering this content, candidates will
be well-prepared to achieve a high score and obtain their boiler inspector license.
Keywords:
Texas Boiler Inspector, Licensing Exam, ASME Code, Boiler Inspection, Pressure Vessel, Safety, Exam Prep,
2026-2027
Answer Format:
Each question is presented with four answer options, one of which is correct. The correct answer is indicated,
followed by a detailed rationale explaining the reasoning behind it. Additionally, distractor explanations are
provided for each incorrect option to clarify common errors and reinforce learning.
Compliance Checklist:
Aligned with 2026-2027 Texas Boiler Inspector Licensing Exam blueprint
Covers all ASME Boiler and Pressure Vessel Code sections relevant to inspection
Page 1
, Includes National Board Inspection Code requirements
Addresses Texas state-specific regulations and updates
Verified by subject matter experts for accuracy
Designed for self-assessment and exam readiness
Content Area Overview:
Content Area Questions Key Topics Weight
Boiler Design and Construction 1-50 Materials, welding, design pressure, 20%
construction codes, types of boilers
Boiler Operation and 51-100 Startup/shutdown procedures, water 20%
Maintenance treatment, fuel systems, combustion,
efficiency
Inspection Procedures and Safety 101-150 NDT methods, inspection intervals, safety 20%
valves, pressure testing, hazard
identification
Codes and Standards 151-200 ASME BPVC, NBIC, API, Texas 20%
regulations, recordkeeping
Regulatory and Professional 201-250 Ethics, legal requirements, reporting, 20%
Responsibilities certification renewal, liability
Page 2
,Q1. A boiler inspector encounters a fire-tube boiler with a longitudinal seam crack in the shell plate. The
crack is located in the butt-strap joint, approximately 6 inches from the end of the strap. The boiler was
constructed in 1985 per ASME Section I. The repair plan proposes to weld repair without prior approval
from the National Board. Which of the following is the most appropriate course of action?
A. Approve the weld repair as long as the weld procedure is qualified per ASME Section IX.
B. Require that the repair be performed by an ASME accredited repair organization and that a repair plan be
submitted to the National Board for review before work begins.
C. Reject the repair because longitudinal seam cracks in shell plates cannot be repaired; the entire shell must be
replaced.
D. Allow a temporary repair using a welded patch plate, but require a hydrostatic test at 1.5 times MAWP
afterward.
Correct Answer: B. Require that the repair be performed by an ASME accredited repair organization and
that a repair plan be submitted to the National Board for review before work begins.
Rationale: Per NBIC Part 2, repairs to pressure-retaining items must be performed by an ASME accredited repair
organization and require prior National Board review for major repairs, especially when the repair involves
welding on a longitudinal seam. Option B correctly mandates both requirements. Option A ignores National Board
jurisdiction. Option C is incorrect because such cracks can be repaired under controlled conditions. Option D is
unsafe and non-code compliant.
Why Wrong:
A - Weld procedure qualification alone is insufficient; National Board approval is required for repairs on
pressure vessels.
C - Longitudinal seam cracks can be repaired per NBIC guidelines; replacement is not always necessary.
D - Temporary patch plates are not permitted for longitudinal seam cracks; a permanent repair with proper
documentation is required.
Reference: NBIC Part 2, Section 2.3; ASME Section I, PG-77
Q2. During an annual inspection of a watertube boiler operating at 900 psig, the inspector notes that the
safety valve set pressure is stamped as 850 psig. The boiler MAWP is 800 psig. The boiler is equipped with
two safety valves, each with a capacity of 50,000 lb/hr. The maximum boiler output is 90,000 lb/hr. Which of
the following violations is most critical?
A. The safety valve set pressure exceeds the MAWP, which is not permitted.
B. The combined relieving capacity of the two safety valves (100,000 lb/hr) exceeds the boiler output by more
than 10%.
C. The safety valve set pressure is below the MAWP, causing premature opening.
D. The safety valve set pressure is above the MAWP by 50 psi, which is allowed for superheaters but not for
the boiler drum.
Correct Answer: A. The safety valve set pressure exceeds the MAWP, which is not permitted.
Rationale: ASME Section I PG-67.2 requires that the lowest safety valve setting does not exceed the MAWP. Here
MAWP is 800 psig, but the valve is set at 850 psig, a clear violation. Option C is incorrect because 850 psig is
above 800 psig. Option B is not a violation; capacity must be at least the boiler output, and excess is acceptable.
Option D is false; no such allowance exists for boiler drum safety valves.
Why Wrong:
B - Combined capacity exceeding output is acceptable; the code requires capacity at least equal to the
maximum output.
C - The set pressure (850 psig) is above, not below, the MAWP (800 psig).
D - Superheater safety valves may be set higher, but drum safety valves must not exceed MAWP.
Reference: ASME Section I, PG-67.2, PG-68
Page 3
, Q3. A boiler inspector is reviewing a weld procedure qualification record (PQR) for a butt weld joining
SA-516 Grade 70 plates of 1-inch thickness. The PQR shows a Charpy V-notch impact test result of 20 ft-lb at
-20°F for the weld metal. The design minimum temperature is -10°F. The weld procedure specification (WPS)
requires impact testing. Which of the following is correct?
A. The impact test results are acceptable because the test temperature is lower than the minimum design temperature.
B. The impact test results are unacceptable because the absorbed energy is below 25 ft-lb for ASME Section VIII,
Division 1.
C. The impact test results are acceptable because the minimum design temperature is -10°F and the test was at -20°F,
meeting the 10°F margin requirement.
D. The impact test results are unacceptable because the test temperature must be at least as low as the minimum design
temperature, but the energy requirement for the weld metal is higher than 20 ft-lb.
Correct Answer: D. The impact test results are unacceptable because the test temperature must be at least as low as the
minimum design temperature, but the energy requirement for the weld metal is higher than 20 ft-lb.
Rationale: Per ASME Section VIII, Division 1, UCS-66 and UCS-67, impact testing for ferritic steels requires that the test
temperature be equal to or lower than the minimum design temperature. Here the test was at -20°F, which is lower than -10°F,
so the temperature condition is satisfied. However, the required minimum absorbed energy for weld metal is typically 25 ft-lb
per ASME Section VIII, Division 1, Table UG-84.3. The result of 20 ft-lb is insufficient. Option D correctly identifies the energy
deficiency. Option A ignores the energy requirement. Option B is too absolute; the code may allow lower energy for some
materials but not for this common grade. Option C is incorrect because the 10°F margin is not a code requirement.
Why Wrong:
A - It ignores the minimum energy requirement of 25 ft-lb for weld metal per ASME Section VIII.
B - The 25 ft-lb requirement is correct, but the statement that it is per Section VIII Division 1 is accurate, yet the
explanation in B lacks context; however, D is more precise because it correctly identifies the temperature condition is
met but energy is not.
C - There is no 10°F margin requirement in the code; the test temperature must be at or below the design minimum
temperature.
Reference: ASME Section VIII, Division 1, UCS-66, UCS-67, Table UG-84.3
Q4. A low-pressure steam heating boiler (ASME Section IV) has a historical MAWP of 15 psi. The boiler is
fired with natural gas and has a maximum input rating of 2,500,000 Btu/hr. The inspector finds that the
boiler is currently operating with a single safety valve set at 20 psi. The boiler nameplate is missing. Which of
the following is the most appropriate action?
A. Order immediate replacement of the safety valve with one set at 15 psi, and require a nameplate to be
ordered.
B. Allow continued operation because the safety valve setting is within the typical tolerance of ±3 psi for
low-pressure boilers.
C. Require a hydrostatic test to confirm the boiler's actual MAWP before taking any action.
D. Shut down the boiler until a new nameplate is obtained and the safety valve is verified to be set at or below
15 psi.
Correct Answer: A. Order immediate replacement of the safety valve with one set at 15 psi, and require a
nameplate to be ordered.
Rationale: ASME Section IV, HG-400 requires safety valves on low-pressure heating boilers to be set at or below
the MAWP. The MAWP is 15 psi, but the valve is set at 20 psi, which is a clear safety hazard. The boiler must be
taken out of service until the valve is replaced or reset. Option A correctly orders replacement and nameplate
compliance. Option B is false; tolerance does not allow exceeding MAWP. Option C is unnecessary; the MAWP is
known from historical records. Option D is too extreme; a nameplate can be obtained later, but the immediate
hazard is the overpressure valve.
Why Wrong:
B - No tolerance permits a safety valve setting above MAWP; the valve must be set at or below 15 psi.
Page 4
2026/2027 Edition | 250 Verified Questions
Texas Boiler Inspector Licensing Exam 2026-2027 QUESTIONS AND ANSWERS ALREADY
GRADED A+. 100% Verified Solutions | Updated Per Latest Guidelines | Graded A+
This comprehensive study guide contains 250 verified questions and answers for the Texas Boiler
Inspector Licensing Exam, updated for the 2026-2027 academic year. It covers all key topics including
boiler design, operation, maintenance, inspection procedures, and relevant ASME codes. Each question
is accompanied by a detailed rationale and distractor explanations to reinforce learning. Ideal for
candidates seeking a high score on the licensing exam.
Key Features:
Boiler design and construction principles
Inspection procedures and safety protocols
ASME Boiler and Pressure Vessel Code compliance
Fuel systems and combustion efficiency
Water treatment and steam system management
Regulatory requirements and recordkeeping
Updates for 2026:
- Updated to reflect 2026 ASME Code revisions
- Added new questions on digital inspection tools
- Revised rationales for clarity and accuracy
- Included recent regulatory changes from Texas Department of Licensing and Regulation
- Enhanced distractor explanations to address common misconceptions
Abstract:
This document is a meticulously curated collection of 250 exam-style questions and answers designed for
candidates preparing for the Texas Boiler Inspector Licensing Exam. The content is aligned with the latest
2026-2027 exam blueprint and covers all domains: boiler design, operation, maintenance, inspection, and safety.
Each question includes a correct answer, a detailed rationale explaining the underlying principles, and distractor
analysis to clarify why incorrect options are wrong. The material draws from ASME Boiler and Pressure Vessel
Code, National Board Inspection Code, and Texas state regulations. Special emphasis is placed on practical
inspection scenarios, code application, and hazard identification. This resource is intended for self-study and can
be used to assess readiness, identify weak areas, and build confidence. The questions are verified for accuracy by
subject matter experts and reflect the most current industry standards. By mastering this content, candidates will
be well-prepared to achieve a high score and obtain their boiler inspector license.
Keywords:
Texas Boiler Inspector, Licensing Exam, ASME Code, Boiler Inspection, Pressure Vessel, Safety, Exam Prep,
2026-2027
Answer Format:
Each question is presented with four answer options, one of which is correct. The correct answer is indicated,
followed by a detailed rationale explaining the reasoning behind it. Additionally, distractor explanations are
provided for each incorrect option to clarify common errors and reinforce learning.
Compliance Checklist:
Aligned with 2026-2027 Texas Boiler Inspector Licensing Exam blueprint
Covers all ASME Boiler and Pressure Vessel Code sections relevant to inspection
Page 1
, Includes National Board Inspection Code requirements
Addresses Texas state-specific regulations and updates
Verified by subject matter experts for accuracy
Designed for self-assessment and exam readiness
Content Area Overview:
Content Area Questions Key Topics Weight
Boiler Design and Construction 1-50 Materials, welding, design pressure, 20%
construction codes, types of boilers
Boiler Operation and 51-100 Startup/shutdown procedures, water 20%
Maintenance treatment, fuel systems, combustion,
efficiency
Inspection Procedures and Safety 101-150 NDT methods, inspection intervals, safety 20%
valves, pressure testing, hazard
identification
Codes and Standards 151-200 ASME BPVC, NBIC, API, Texas 20%
regulations, recordkeeping
Regulatory and Professional 201-250 Ethics, legal requirements, reporting, 20%
Responsibilities certification renewal, liability
Page 2
,Q1. A boiler inspector encounters a fire-tube boiler with a longitudinal seam crack in the shell plate. The
crack is located in the butt-strap joint, approximately 6 inches from the end of the strap. The boiler was
constructed in 1985 per ASME Section I. The repair plan proposes to weld repair without prior approval
from the National Board. Which of the following is the most appropriate course of action?
A. Approve the weld repair as long as the weld procedure is qualified per ASME Section IX.
B. Require that the repair be performed by an ASME accredited repair organization and that a repair plan be
submitted to the National Board for review before work begins.
C. Reject the repair because longitudinal seam cracks in shell plates cannot be repaired; the entire shell must be
replaced.
D. Allow a temporary repair using a welded patch plate, but require a hydrostatic test at 1.5 times MAWP
afterward.
Correct Answer: B. Require that the repair be performed by an ASME accredited repair organization and
that a repair plan be submitted to the National Board for review before work begins.
Rationale: Per NBIC Part 2, repairs to pressure-retaining items must be performed by an ASME accredited repair
organization and require prior National Board review for major repairs, especially when the repair involves
welding on a longitudinal seam. Option B correctly mandates both requirements. Option A ignores National Board
jurisdiction. Option C is incorrect because such cracks can be repaired under controlled conditions. Option D is
unsafe and non-code compliant.
Why Wrong:
A - Weld procedure qualification alone is insufficient; National Board approval is required for repairs on
pressure vessels.
C - Longitudinal seam cracks can be repaired per NBIC guidelines; replacement is not always necessary.
D - Temporary patch plates are not permitted for longitudinal seam cracks; a permanent repair with proper
documentation is required.
Reference: NBIC Part 2, Section 2.3; ASME Section I, PG-77
Q2. During an annual inspection of a watertube boiler operating at 900 psig, the inspector notes that the
safety valve set pressure is stamped as 850 psig. The boiler MAWP is 800 psig. The boiler is equipped with
two safety valves, each with a capacity of 50,000 lb/hr. The maximum boiler output is 90,000 lb/hr. Which of
the following violations is most critical?
A. The safety valve set pressure exceeds the MAWP, which is not permitted.
B. The combined relieving capacity of the two safety valves (100,000 lb/hr) exceeds the boiler output by more
than 10%.
C. The safety valve set pressure is below the MAWP, causing premature opening.
D. The safety valve set pressure is above the MAWP by 50 psi, which is allowed for superheaters but not for
the boiler drum.
Correct Answer: A. The safety valve set pressure exceeds the MAWP, which is not permitted.
Rationale: ASME Section I PG-67.2 requires that the lowest safety valve setting does not exceed the MAWP. Here
MAWP is 800 psig, but the valve is set at 850 psig, a clear violation. Option C is incorrect because 850 psig is
above 800 psig. Option B is not a violation; capacity must be at least the boiler output, and excess is acceptable.
Option D is false; no such allowance exists for boiler drum safety valves.
Why Wrong:
B - Combined capacity exceeding output is acceptable; the code requires capacity at least equal to the
maximum output.
C - The set pressure (850 psig) is above, not below, the MAWP (800 psig).
D - Superheater safety valves may be set higher, but drum safety valves must not exceed MAWP.
Reference: ASME Section I, PG-67.2, PG-68
Page 3
, Q3. A boiler inspector is reviewing a weld procedure qualification record (PQR) for a butt weld joining
SA-516 Grade 70 plates of 1-inch thickness. The PQR shows a Charpy V-notch impact test result of 20 ft-lb at
-20°F for the weld metal. The design minimum temperature is -10°F. The weld procedure specification (WPS)
requires impact testing. Which of the following is correct?
A. The impact test results are acceptable because the test temperature is lower than the minimum design temperature.
B. The impact test results are unacceptable because the absorbed energy is below 25 ft-lb for ASME Section VIII,
Division 1.
C. The impact test results are acceptable because the minimum design temperature is -10°F and the test was at -20°F,
meeting the 10°F margin requirement.
D. The impact test results are unacceptable because the test temperature must be at least as low as the minimum design
temperature, but the energy requirement for the weld metal is higher than 20 ft-lb.
Correct Answer: D. The impact test results are unacceptable because the test temperature must be at least as low as the
minimum design temperature, but the energy requirement for the weld metal is higher than 20 ft-lb.
Rationale: Per ASME Section VIII, Division 1, UCS-66 and UCS-67, impact testing for ferritic steels requires that the test
temperature be equal to or lower than the minimum design temperature. Here the test was at -20°F, which is lower than -10°F,
so the temperature condition is satisfied. However, the required minimum absorbed energy for weld metal is typically 25 ft-lb
per ASME Section VIII, Division 1, Table UG-84.3. The result of 20 ft-lb is insufficient. Option D correctly identifies the energy
deficiency. Option A ignores the energy requirement. Option B is too absolute; the code may allow lower energy for some
materials but not for this common grade. Option C is incorrect because the 10°F margin is not a code requirement.
Why Wrong:
A - It ignores the minimum energy requirement of 25 ft-lb for weld metal per ASME Section VIII.
B - The 25 ft-lb requirement is correct, but the statement that it is per Section VIII Division 1 is accurate, yet the
explanation in B lacks context; however, D is more precise because it correctly identifies the temperature condition is
met but energy is not.
C - There is no 10°F margin requirement in the code; the test temperature must be at or below the design minimum
temperature.
Reference: ASME Section VIII, Division 1, UCS-66, UCS-67, Table UG-84.3
Q4. A low-pressure steam heating boiler (ASME Section IV) has a historical MAWP of 15 psi. The boiler is
fired with natural gas and has a maximum input rating of 2,500,000 Btu/hr. The inspector finds that the
boiler is currently operating with a single safety valve set at 20 psi. The boiler nameplate is missing. Which of
the following is the most appropriate action?
A. Order immediate replacement of the safety valve with one set at 15 psi, and require a nameplate to be
ordered.
B. Allow continued operation because the safety valve setting is within the typical tolerance of ±3 psi for
low-pressure boilers.
C. Require a hydrostatic test to confirm the boiler's actual MAWP before taking any action.
D. Shut down the boiler until a new nameplate is obtained and the safety valve is verified to be set at or below
15 psi.
Correct Answer: A. Order immediate replacement of the safety valve with one set at 15 psi, and require a
nameplate to be ordered.
Rationale: ASME Section IV, HG-400 requires safety valves on low-pressure heating boilers to be set at or below
the MAWP. The MAWP is 15 psi, but the valve is set at 20 psi, which is a clear safety hazard. The boiler must be
taken out of service until the valve is replaced or reset. Option A correctly orders replacement and nameplate
compliance. Option B is false; tolerance does not allow exceeding MAWP. Option C is unnecessary; the MAWP is
known from historical records. Option D is too extreme; a nameplate can be obtained later, but the immediate
hazard is the overpressure valve.
Why Wrong:
B - No tolerance permits a safety valve setting above MAWP; the valve must be set at or below 15 psi.
Page 4
