Massachusetts Journeyman Pipefitter License Exam (2027) |
100 Questions & Correct Answers with Detailed Rationales |
PDF Study Guide
1. Under Massachusetts law, which chapter of the General Laws establishes the licensing
requirement for journeyman pipefitters?
A) M.G.L. c. 142
B) M.G.L. c. 146
C) M.G.L. c. 30A
D) M.G.L. c. 149
Correct Answer: B) M.G.L. c. 146
EXPERT RATIONALE: M.G.L. c. 146 governs the licensing of pipefitters, refrigeration technicians, and
sprinkler fitters in Massachusetts . Chapter 142 applies to plumbers and gas fitters, while Chapter 30A
concerns administrative procedure. Confusing these chapters can lead to citing the wrong statutory
authority on the job or in an application.
2. A journeyman pipefitter applicant submits an application dated October 15, 2026. Which
education requirement applies to that application?
A) 350 hours of ASME code instruction
B) 400 hours of ASME code instruction
C) 450 hours of ASME code instruction
D) 500 hours of pipefitting theory
Correct Answer: A) 350 hours of ASME code instruction
EXPERT RATIONALE: Applications dated before November 9, 2026 fall under the prior pathway
requiring 350 hours of ASME code instruction with 6,000 apprentice hours . The 450-hour
requirement applies only to applications dated on or after November 9, 2026. A hardship waiver may
extend the prior pathway only until May 10, 2027.
3. What is the minimum passing score on the Massachusetts Journeyman Pipefitter written
examination?
A) 65%
B) 70%
C) 75%
D) 80%
Correct Answer: B) 70%
EXPERT RATIONALE: 528 CMR 11.00(2)(d) states that candidates must correctly answer 70% or more
of the examination questions to qualify for a license . This threshold applies to the written
examination and is not subject to local variation. A score below 70% requires reapplication and
retesting.
4. A pipefitter is installing a high-pressure steam line classified under ASME B31.1. Which code
section governs the qualification of welders and welding procedures?
A) ASME Section IV
B) ASME Section IX
C) ASME B31.9
D) ASME Section I only
Correct Answer: B) ASME Section IX
EXPERT RATIONALE: ASME B31.1 invokes Section IX for qualification of welding procedures and
,welders on power piping . Section IV covers heating boilers, B31.9 covers building services piping, and
Section I covers power boilers. Welder qualification is consistently tied to Section IX across the B31
code series.
5. A Massachusetts journeyman pipefitter license applicant with 4,000 apprentice hours under the
pre-November 2026 pathway must document how many total hours of pipefitting course study?
A) 350 hours
B) 500 hours
C) 750 hours
D) 1,000 hours
Correct Answer: B) 500 hours
EXPERT RATIONALE: The 4,000-hour pathway requires 500 hours of pipefitter course study, of which
250 hours must be practical shop work, plus 200 hours of ASME code instruction . The 350-hour
figure applies to the 6,000-hour pathway. Combining the ASME hours and shop hours incorrectly can
lead to an incomplete application.
6. Which ASME code applies to process piping typically found in chemical plants, refineries, and
pharmaceutical facilities?
A) ASME B31.1
B) ASME B31.3
C) ASME B31.5
D) ASME B31.9
Correct Answer: B) ASME B31.3
EXPERT RATIONALE: ASME B31.3 covers process piping in petroleum refineries, chemical plants,
pharmaceutical facilities, and related processing plants . B31.1 covers power piping, B31.5 covers
refrigeration piping, and B31.9 covers building services piping. Massachusetts pipefitting scope
explicitly references Category M liquids as defined in B31.3 .
7. A pipefitter is preparing a hydrostatic test on a B31.3 Normal Fluid Service piping system. What
is the standard test pressure multiple of design pressure, before temperature correction?
A) 1.0×
B) 1.25×
C) 1.5×
D) 2.0×
Correct Answer: C) 1.5×
EXPERT RATIONALE: ASME B31.3 specifies hydrostatic leak test pressure at 1.5 times design pressure,
subject to temperature correction per para. 345.4.2 . Pneumatic testing uses a lower multiple (1.1×)
due to stored energy hazards. Using the pneumatic multiple for a hydrostatic test under-pressurizes
the system.
8. What is the primary purpose of an expansion loop in a high-temperature steam piping system?
A) To increase flow velocity
B) To accommodate thermal expansion and prevent excessive stress
C) To serve as a pressure relief device
D) To reduce noise from steam flow
Correct Answer: B) To accommodate thermal expansion and prevent excessive stress
EXPERT RATIONALE: Expansion loops absorb axial growth caused by thermal expansion, preventing
excessive stress on anchors, supports, and connected equipment. They are not pressure relief devices
and do not intentionally increase velocity. Proper loop sizing depends on the calculated thermal
movement and pipe flexibility analysis.
, 9. Which Massachusetts regulation establishes the prerequisites for examination for pipefitters,
refrigeration technicians, and sprinkler fitters?
A) 248 CMR 10.00
B) 528 CMR 11.00
C) 522 CMR 16.00
D) 248 CMR 3.00
Correct Answer: B) 528 CMR 11.00
EXPERT RATIONALE: 528 CMR 11.00 specifically establishes licensure requirements including
education, experience, and examination for pipefitters, refrigeration technicians, and sprinkler fitters .
248 CMR 10.00 addresses plumbing code, 522 CMR covers boiler rules, and 248 CMR 3.00 concerns
fuel gas. Citing the wrong regulation can misstate eligibility requirements.
10. A 6-inch Schedule 40 steel pipe has a nominal wall thickness of approximately 0.280 inches. If
the pipe is bent, what fabrication allowance must be considered in the design thickness?
A) No allowance is needed for bending
B) Wall thinning at the extrados must be accounted for
C) Wall thickening at the intrados reduces required thickness
D) Only the pipe mill tolerance applies
Correct Answer: B) Wall thinning at the extrados must be accounted for
EXPERT RATIONALE: Pipe bending causes wall thinning on the outer radius (extrados) of the bend,
which must be calculated and accounted for in the minimum design thickness . Intrados thickening
does not compensate for extrados thinning because the thinnest point governs pressure containment.
Mill tolerance alone does not address bend-specific thinning.
11. Under the Massachusetts journeyman pipefitter scope, pipefitting includes installation of
heating system apparatus with a rating greater than what threshold?
A) 400,000 BTU
B) 500,000 BTU
C) 700,000 BTU
D) 1,000,000 BTU
Correct Answer: C) 700,000 BTU
EXPERT RATIONALE: The Massachusetts pipefitting definition includes apparatus for heating systems
rated greater than 700,000 BTU, along with steam conveyance, vacuum, pneumatic, oil, and high-
pressure systems . Systems below this threshold may fall under plumbing or other trade jurisdictions.
Misclassifying the threshold can result in work outside the license scope.
12. A pipefitter is reading an isometric drawing. A symbol shows a line changing direction with a
90-degree elbow, and the drawing includes an offset in two planes. What type of drawing is this
primarily used for?
A) P&ID
B) Isometric piping drawing
C) Orthographic projection
D) Electrical single-line diagram
Correct Answer: B) Isometric piping drawing
EXPERT RATIONALE: Isometric piping drawings show piping runs in three dimensions on a single
plane, including offsets in multiple planes, and are used for fabrication and installation layout. P&IDs
show process flow and instrumentation, not dimensional pipe routing. Orthographic drawings use
multiple views rather than a single 3D representation.
100 Questions & Correct Answers with Detailed Rationales |
PDF Study Guide
1. Under Massachusetts law, which chapter of the General Laws establishes the licensing
requirement for journeyman pipefitters?
A) M.G.L. c. 142
B) M.G.L. c. 146
C) M.G.L. c. 30A
D) M.G.L. c. 149
Correct Answer: B) M.G.L. c. 146
EXPERT RATIONALE: M.G.L. c. 146 governs the licensing of pipefitters, refrigeration technicians, and
sprinkler fitters in Massachusetts . Chapter 142 applies to plumbers and gas fitters, while Chapter 30A
concerns administrative procedure. Confusing these chapters can lead to citing the wrong statutory
authority on the job or in an application.
2. A journeyman pipefitter applicant submits an application dated October 15, 2026. Which
education requirement applies to that application?
A) 350 hours of ASME code instruction
B) 400 hours of ASME code instruction
C) 450 hours of ASME code instruction
D) 500 hours of pipefitting theory
Correct Answer: A) 350 hours of ASME code instruction
EXPERT RATIONALE: Applications dated before November 9, 2026 fall under the prior pathway
requiring 350 hours of ASME code instruction with 6,000 apprentice hours . The 450-hour
requirement applies only to applications dated on or after November 9, 2026. A hardship waiver may
extend the prior pathway only until May 10, 2027.
3. What is the minimum passing score on the Massachusetts Journeyman Pipefitter written
examination?
A) 65%
B) 70%
C) 75%
D) 80%
Correct Answer: B) 70%
EXPERT RATIONALE: 528 CMR 11.00(2)(d) states that candidates must correctly answer 70% or more
of the examination questions to qualify for a license . This threshold applies to the written
examination and is not subject to local variation. A score below 70% requires reapplication and
retesting.
4. A pipefitter is installing a high-pressure steam line classified under ASME B31.1. Which code
section governs the qualification of welders and welding procedures?
A) ASME Section IV
B) ASME Section IX
C) ASME B31.9
D) ASME Section I only
Correct Answer: B) ASME Section IX
EXPERT RATIONALE: ASME B31.1 invokes Section IX for qualification of welding procedures and
,welders on power piping . Section IV covers heating boilers, B31.9 covers building services piping, and
Section I covers power boilers. Welder qualification is consistently tied to Section IX across the B31
code series.
5. A Massachusetts journeyman pipefitter license applicant with 4,000 apprentice hours under the
pre-November 2026 pathway must document how many total hours of pipefitting course study?
A) 350 hours
B) 500 hours
C) 750 hours
D) 1,000 hours
Correct Answer: B) 500 hours
EXPERT RATIONALE: The 4,000-hour pathway requires 500 hours of pipefitter course study, of which
250 hours must be practical shop work, plus 200 hours of ASME code instruction . The 350-hour
figure applies to the 6,000-hour pathway. Combining the ASME hours and shop hours incorrectly can
lead to an incomplete application.
6. Which ASME code applies to process piping typically found in chemical plants, refineries, and
pharmaceutical facilities?
A) ASME B31.1
B) ASME B31.3
C) ASME B31.5
D) ASME B31.9
Correct Answer: B) ASME B31.3
EXPERT RATIONALE: ASME B31.3 covers process piping in petroleum refineries, chemical plants,
pharmaceutical facilities, and related processing plants . B31.1 covers power piping, B31.5 covers
refrigeration piping, and B31.9 covers building services piping. Massachusetts pipefitting scope
explicitly references Category M liquids as defined in B31.3 .
7. A pipefitter is preparing a hydrostatic test on a B31.3 Normal Fluid Service piping system. What
is the standard test pressure multiple of design pressure, before temperature correction?
A) 1.0×
B) 1.25×
C) 1.5×
D) 2.0×
Correct Answer: C) 1.5×
EXPERT RATIONALE: ASME B31.3 specifies hydrostatic leak test pressure at 1.5 times design pressure,
subject to temperature correction per para. 345.4.2 . Pneumatic testing uses a lower multiple (1.1×)
due to stored energy hazards. Using the pneumatic multiple for a hydrostatic test under-pressurizes
the system.
8. What is the primary purpose of an expansion loop in a high-temperature steam piping system?
A) To increase flow velocity
B) To accommodate thermal expansion and prevent excessive stress
C) To serve as a pressure relief device
D) To reduce noise from steam flow
Correct Answer: B) To accommodate thermal expansion and prevent excessive stress
EXPERT RATIONALE: Expansion loops absorb axial growth caused by thermal expansion, preventing
excessive stress on anchors, supports, and connected equipment. They are not pressure relief devices
and do not intentionally increase velocity. Proper loop sizing depends on the calculated thermal
movement and pipe flexibility analysis.
, 9. Which Massachusetts regulation establishes the prerequisites for examination for pipefitters,
refrigeration technicians, and sprinkler fitters?
A) 248 CMR 10.00
B) 528 CMR 11.00
C) 522 CMR 16.00
D) 248 CMR 3.00
Correct Answer: B) 528 CMR 11.00
EXPERT RATIONALE: 528 CMR 11.00 specifically establishes licensure requirements including
education, experience, and examination for pipefitters, refrigeration technicians, and sprinkler fitters .
248 CMR 10.00 addresses plumbing code, 522 CMR covers boiler rules, and 248 CMR 3.00 concerns
fuel gas. Citing the wrong regulation can misstate eligibility requirements.
10. A 6-inch Schedule 40 steel pipe has a nominal wall thickness of approximately 0.280 inches. If
the pipe is bent, what fabrication allowance must be considered in the design thickness?
A) No allowance is needed for bending
B) Wall thinning at the extrados must be accounted for
C) Wall thickening at the intrados reduces required thickness
D) Only the pipe mill tolerance applies
Correct Answer: B) Wall thinning at the extrados must be accounted for
EXPERT RATIONALE: Pipe bending causes wall thinning on the outer radius (extrados) of the bend,
which must be calculated and accounted for in the minimum design thickness . Intrados thickening
does not compensate for extrados thinning because the thinnest point governs pressure containment.
Mill tolerance alone does not address bend-specific thinning.
11. Under the Massachusetts journeyman pipefitter scope, pipefitting includes installation of
heating system apparatus with a rating greater than what threshold?
A) 400,000 BTU
B) 500,000 BTU
C) 700,000 BTU
D) 1,000,000 BTU
Correct Answer: C) 700,000 BTU
EXPERT RATIONALE: The Massachusetts pipefitting definition includes apparatus for heating systems
rated greater than 700,000 BTU, along with steam conveyance, vacuum, pneumatic, oil, and high-
pressure systems . Systems below this threshold may fall under plumbing or other trade jurisdictions.
Misclassifying the threshold can result in work outside the license scope.
12. A pipefitter is reading an isometric drawing. A symbol shows a line changing direction with a
90-degree elbow, and the drawing includes an offset in two planes. What type of drawing is this
primarily used for?
A) P&ID
B) Isometric piping drawing
C) Orthographic projection
D) Electrical single-line diagram
Correct Answer: B) Isometric piping drawing
EXPERT RATIONALE: Isometric piping drawings show piping runs in three dimensions on a single
plane, including offsets in multiple planes, and are used for fabrication and installation layout. P&IDs
show process flow and instrumentation, not dimensional pipe routing. Orthographic drawings use
multiple views rather than a single 3D representation.
