NYC HIGH PRESSURE STEAM TEST PAPER QUESTIONS AND
SOLUTIONS 2025/2026 GRADED A+
✔✔11 When is a fusible plug not needed to be installed on a boiler? - ✔✔Over 200
PSIG. HP Code: 14-10.17, b
✔✔12 When shall a power boiler with a MAWP over 400 be tested? - ✔✔Pressure
tested annually ( safety valve). HP Code: 14-9.7, a,2
✔✔13 What shall a Design plan of a boiler and application contain but not limited to? -
✔✔Size + Location, Operating Pressure + Temperature of the Pressure vessel, and
Type + Specification of Pressure Relief.
✔✔14 Who is responsible for maintaining the copies of the certified welder qualifications
report? - ✔✔Copies of the certified welder qualification report she'll be maintained by
the responsible WELDING AGENCY and the company performing the welding, and
shall be made available upon request to the DOB. RCNY: 20-02, b,2v,/22-01,d,5. HP
Code: 14-3.7
✔✔15 Who needs to furnish a control diagram and boiler operation instructions? -
✔✔The Installer. NYC Mech: 1004.7
✔✔16 Who will certify and calibrate all gauges utilized for testing? - ✔✔All gauges
utilized for testing shall be calibrated and certified annually in accordance with ASME
B40.100 by the test operathor. NYC Mech: 1011.2
✔✔17 What shall be placed in between different joints and piping material? - ✔✔An
approved Adapter Fitting NYC Mech: 1203.1.2
✔✔18 What items are exempt from the reporting requirements? - ✔✔Exemptions: (1)
the installation of backing rings in handhole or manhole openings or the building up of
same; and (2) the seal welding of tubes to the tube sheet. HP Code: 14-3.4, b, 1-2
✔✔19. Who will be under control for any welding done to a High-pressure tank? -
✔✔The welding shall be under controlled inspection of an ENGINEER, supervising a
welding inspection agency acceptable to the DOB RCNY: 22-01 d,2
✔✔20 At what pressure is it required to have extra heavy valves installed? - ✔✔HP
Code: 14-10.21b / 14-9.2,b
✔✔21 The -------------- files an application for a boiler alteration - ✔✔Inspector HP Code:
14-3.3 c, 2, ii
,✔✔22 How many safety valves does a boiler have with over 500 square feet of heating
surface? - ✔✔At least 2 HP Code: 14-9.4a
✔✔23 Gas fired Boilers not exceeding 100 square feet of heating surface shall de
provided with a ? - ✔✔Single or Double Cone type of Hood Diverter in the stack HP
Code: 14-6.2
✔✔24 A heater for either liquid fuels or other liquids harmful to the boiler shall not be
installed? - ✔✔Directly in the steam or water space within a boiler. HP Code: 14-5.1
✔✔25 Who is responsible for any spatial relationship between tanks and gas services?
- ✔✔The Installer of the last installation to correct the violation. RCNY: 22-01, c,3
✔✔Who is responsible for the setting of operating and safety controls? - ✔✔The
Installing Company NYC Mech: 1004.7
✔✔27 With what safety fitting shall you protect High Pressure Steam and Water boilers
with? - ✔✔DUAL Low Water Cut Outs. NYC Mech: 1007.1. HP Code: 14- 1. 14, a
✔✔28 Spring loaded safety valves have a total combined relieve capacity of? -
✔✔100% of the Max Designed Capacity of the Boiler. HP Code: 14-9.5, b
✔✔29 What is the total combined relieving capacity of power actuated relieving valves?
- ✔✔NO LESS THAN 10% of the MAWP or NO HIGHER THAN 20% ABOVE the
MAWP. HP Code: 14-9.5, a, b
✔✔30 What is the minimum blowdown for a spring-loaded safety valve? - ✔✔2%. HP
Code: 14-9.12
✔✔31 When a boiler is de-rated what changes? - ✔✔The MAWP Decreases and the
BTU Output. HP Code: 14-3.21, a
✔✔32 In Hydronic piping systems where shall a shutoff valve be installed? - ✔✔Shutoff
valves shall be installed on both sides of a pressure-reducing valve. NYC Mech:
1205.1.4
✔✔33 Hydronic piping joints between steel tubing and fittings shall be? - ✔✔Mechanical
or Welded NYC Mech: 1203.14
✔✔34 What appears on the plate of a boiler? - ✔✔Serial #, Name of Manufacturer,
Serial # of manufacturer, MAWP, Heating Surface, Year Built, and Rated Steam
Capacity. HP Code: 14-9.43, d (1-6)
, ✔✔35 Waste Gas removal of a boiler shall conduct the products of combustion where?
- ✔✔To the atmosphere. HP Code: 14-6.1
✔✔36 When a quick closing valve creates water hammer what is installed on the line? -
✔✔An engineered water-hammer arrestor shall be installed. NYC Mech: 1206.7
✔✔37 Safety valve capacity may be checked in what 3 ways? - ✔✔Accumulation Test,
Amount of Fuel Burned, Evaporative Capacity of Feed water. HP Code: 14-10.14 (1-3)
✔✔Records of inspects are kept where? - ✔✔On the premises. RCNY: 20-02,a,2iii
✔✔39 No joint anchorages or guides shall be repaired replaced or relocated without a
work permit issued by the department this shall not apply to the reap king of a
_____________________ or ___________________ joint. - ✔✔Ball or Slip Joints.
RCNY: 20-02, a ,3
✔✔40 Internal high pressure inspection requires the boiler to be
__________________,_____________________,_____________________ and
________________________. - ✔✔Shutdown, Drained, Removal of Hand and Man
Holes. HP Code: 14-2.1,b.1-6
✔✔41 The outlet of the blow-off tank is what size? - ✔✔2TIME the diameter of the
Blowdown piping, 6 INCHES INTERNAL entering the bottom of the blow off tank. HP
Code: 14-1.2,b
✔✔42 What info is not necessary to send to D.O.B? - ✔✔Use, Type, Size, Location,
Operation Temp. Of Pressure Tank, and Location, Type, Specs of Pressure Relief
Valve RCNY: 22-01, b,1-3
✔✔43. Miniature boiler specs are ---------- I.D --------- ft gross volume -------- ft water
heating surface -------- MAWP - ✔✔16 Inner Diameter, 5 ft Gross Volume, 20 ft of
heating surface, less than 100 PSIG. HP Code: 14-11.1
✔✔44. Safety valve popping tolerance + capacity up to 70 PSIG ? 71-300 PSIG? 301-
1000 PSIG? > 1000 psig? - ✔✔70 PSIG = 2 PSIG, 71-300 PSIG = 3%, 301-1000 PSIG
= 10 PSIG, 1000 PSIG + = 1%. HP Code: 14-9.12
✔✔45. What are other ways of testing safety or relief valve for rated capacity? -
✔✔Accumulation test, Amount of Fuel Burned, Evaporative Capacity of Feed water. HP
Code: 14-9.9,d,1-3/ 14-10.14,a,1-3
✔✔46. What if someone is found not following the rules and regulation for gas piping
inspections? - ✔✔Revocation of License RCNY: 20-01,d
SOLUTIONS 2025/2026 GRADED A+
✔✔11 When is a fusible plug not needed to be installed on a boiler? - ✔✔Over 200
PSIG. HP Code: 14-10.17, b
✔✔12 When shall a power boiler with a MAWP over 400 be tested? - ✔✔Pressure
tested annually ( safety valve). HP Code: 14-9.7, a,2
✔✔13 What shall a Design plan of a boiler and application contain but not limited to? -
✔✔Size + Location, Operating Pressure + Temperature of the Pressure vessel, and
Type + Specification of Pressure Relief.
✔✔14 Who is responsible for maintaining the copies of the certified welder qualifications
report? - ✔✔Copies of the certified welder qualification report she'll be maintained by
the responsible WELDING AGENCY and the company performing the welding, and
shall be made available upon request to the DOB. RCNY: 20-02, b,2v,/22-01,d,5. HP
Code: 14-3.7
✔✔15 Who needs to furnish a control diagram and boiler operation instructions? -
✔✔The Installer. NYC Mech: 1004.7
✔✔16 Who will certify and calibrate all gauges utilized for testing? - ✔✔All gauges
utilized for testing shall be calibrated and certified annually in accordance with ASME
B40.100 by the test operathor. NYC Mech: 1011.2
✔✔17 What shall be placed in between different joints and piping material? - ✔✔An
approved Adapter Fitting NYC Mech: 1203.1.2
✔✔18 What items are exempt from the reporting requirements? - ✔✔Exemptions: (1)
the installation of backing rings in handhole or manhole openings or the building up of
same; and (2) the seal welding of tubes to the tube sheet. HP Code: 14-3.4, b, 1-2
✔✔19. Who will be under control for any welding done to a High-pressure tank? -
✔✔The welding shall be under controlled inspection of an ENGINEER, supervising a
welding inspection agency acceptable to the DOB RCNY: 22-01 d,2
✔✔20 At what pressure is it required to have extra heavy valves installed? - ✔✔HP
Code: 14-10.21b / 14-9.2,b
✔✔21 The -------------- files an application for a boiler alteration - ✔✔Inspector HP Code:
14-3.3 c, 2, ii
,✔✔22 How many safety valves does a boiler have with over 500 square feet of heating
surface? - ✔✔At least 2 HP Code: 14-9.4a
✔✔23 Gas fired Boilers not exceeding 100 square feet of heating surface shall de
provided with a ? - ✔✔Single or Double Cone type of Hood Diverter in the stack HP
Code: 14-6.2
✔✔24 A heater for either liquid fuels or other liquids harmful to the boiler shall not be
installed? - ✔✔Directly in the steam or water space within a boiler. HP Code: 14-5.1
✔✔25 Who is responsible for any spatial relationship between tanks and gas services?
- ✔✔The Installer of the last installation to correct the violation. RCNY: 22-01, c,3
✔✔Who is responsible for the setting of operating and safety controls? - ✔✔The
Installing Company NYC Mech: 1004.7
✔✔27 With what safety fitting shall you protect High Pressure Steam and Water boilers
with? - ✔✔DUAL Low Water Cut Outs. NYC Mech: 1007.1. HP Code: 14- 1. 14, a
✔✔28 Spring loaded safety valves have a total combined relieve capacity of? -
✔✔100% of the Max Designed Capacity of the Boiler. HP Code: 14-9.5, b
✔✔29 What is the total combined relieving capacity of power actuated relieving valves?
- ✔✔NO LESS THAN 10% of the MAWP or NO HIGHER THAN 20% ABOVE the
MAWP. HP Code: 14-9.5, a, b
✔✔30 What is the minimum blowdown for a spring-loaded safety valve? - ✔✔2%. HP
Code: 14-9.12
✔✔31 When a boiler is de-rated what changes? - ✔✔The MAWP Decreases and the
BTU Output. HP Code: 14-3.21, a
✔✔32 In Hydronic piping systems where shall a shutoff valve be installed? - ✔✔Shutoff
valves shall be installed on both sides of a pressure-reducing valve. NYC Mech:
1205.1.4
✔✔33 Hydronic piping joints between steel tubing and fittings shall be? - ✔✔Mechanical
or Welded NYC Mech: 1203.14
✔✔34 What appears on the plate of a boiler? - ✔✔Serial #, Name of Manufacturer,
Serial # of manufacturer, MAWP, Heating Surface, Year Built, and Rated Steam
Capacity. HP Code: 14-9.43, d (1-6)
, ✔✔35 Waste Gas removal of a boiler shall conduct the products of combustion where?
- ✔✔To the atmosphere. HP Code: 14-6.1
✔✔36 When a quick closing valve creates water hammer what is installed on the line? -
✔✔An engineered water-hammer arrestor shall be installed. NYC Mech: 1206.7
✔✔37 Safety valve capacity may be checked in what 3 ways? - ✔✔Accumulation Test,
Amount of Fuel Burned, Evaporative Capacity of Feed water. HP Code: 14-10.14 (1-3)
✔✔Records of inspects are kept where? - ✔✔On the premises. RCNY: 20-02,a,2iii
✔✔39 No joint anchorages or guides shall be repaired replaced or relocated without a
work permit issued by the department this shall not apply to the reap king of a
_____________________ or ___________________ joint. - ✔✔Ball or Slip Joints.
RCNY: 20-02, a ,3
✔✔40 Internal high pressure inspection requires the boiler to be
__________________,_____________________,_____________________ and
________________________. - ✔✔Shutdown, Drained, Removal of Hand and Man
Holes. HP Code: 14-2.1,b.1-6
✔✔41 The outlet of the blow-off tank is what size? - ✔✔2TIME the diameter of the
Blowdown piping, 6 INCHES INTERNAL entering the bottom of the blow off tank. HP
Code: 14-1.2,b
✔✔42 What info is not necessary to send to D.O.B? - ✔✔Use, Type, Size, Location,
Operation Temp. Of Pressure Tank, and Location, Type, Specs of Pressure Relief
Valve RCNY: 22-01, b,1-3
✔✔43. Miniature boiler specs are ---------- I.D --------- ft gross volume -------- ft water
heating surface -------- MAWP - ✔✔16 Inner Diameter, 5 ft Gross Volume, 20 ft of
heating surface, less than 100 PSIG. HP Code: 14-11.1
✔✔44. Safety valve popping tolerance + capacity up to 70 PSIG ? 71-300 PSIG? 301-
1000 PSIG? > 1000 psig? - ✔✔70 PSIG = 2 PSIG, 71-300 PSIG = 3%, 301-1000 PSIG
= 10 PSIG, 1000 PSIG + = 1%. HP Code: 14-9.12
✔✔45. What are other ways of testing safety or relief valve for rated capacity? -
✔✔Accumulation test, Amount of Fuel Burned, Evaporative Capacity of Feed water. HP
Code: 14-9.9,d,1-3/ 14-10.14,a,1-3
✔✔46. What if someone is found not following the rules and regulation for gas piping
inspections? - ✔✔Revocation of License RCNY: 20-01,d
