NYC HIGH PRESSURE STEAM STUDY GUIDE QUESTIONS
AND SOLUTIONS 2025/2026 GRADED A+
✔✔61. If there is one safety valve on an electric boiler what is the maximum output? -
✔✔Less than 1100 kW
✔✔62. What pressure shall a system using utility street steam be designed for? -
✔✔200 PSIG at 413* F which that is required by a pressure reducing valve . RCNY:
1210.2.1,2
✔✔63.what chemical should be used for oxygen scavenging? - ✔✔Sodium Sulfite or
Sodium Hydroxide
✔✔64. What is the minimum distance from the wall to the boiler? - ✔✔18" NYC
Construction Code, 24" in High Pressure Code. NYC Mech: 1004.3. HP Code: 14-2.2
✔✔65. What is the lowest part of a water gauge? - ✔✔2" above the lowest permissible
water level HP Code: 14-9. 16,b
✔✔66. What standards are used on gauges? - ✔✔ASME, ANSI. RCNY: 20-03,a,1
✔✔67. What is the only thing that could tap onto a low water cut-off? - ✔✔A Drain. HP
Code: 14-1.14,b,10/ 14-9.36,b,2
✔✔68. How many expansion tank are needed for 6 boilers? - ✔✔1. NYC Mech: 1009.1
✔✔69. Who shall design the boiler system? - ✔✔A registered Architect or a Licensed
Professional Engineer.
✔✔70. Gauge to be measured in the magnitude of 5 PSIG shall not be calibrated in no
less than? - ✔✔" The gauge shall be calibrate in increments not greater than one-fifth of
a pound". RCNY: 20-03,d,3
✔✔71. At what percent do you hydrostatic ally test a boiler? - ✔✔150%. HP Code: 14-
9,40/14-10.24
✔✔72. Beside a log book being inspected by a state boiler inspector who else can look
at the book? - ✔✔The insurance company. HP Code: 14-1.13,c
✔✔73. What is the difference between low pressure and high-pressure safety relief
valves? - ✔✔Low pressure relieves to a drain, while High pressure relieves ego a vent
HP Code: 14-11.10,c/14-10.16/14-9.,a LP Code: 4-5.4,1
, ✔✔74. What is the minimum dial arc on a 2 1/4 gauge? - ✔✔270* RCNY: 20-03,c,2
✔✔75. Where is the steam gauge installed on a mini boiler? - ✔✔On the steam space
side. HP Code: 14-11.9
✔✔76. What is an effective stop for a gauge? - ✔✔The indicating point at ZERO.
RCNY: 20-03,c,6
✔✔77. How long is the pre-purge on a low pressure boiler? - ✔✔90 seconds. LP Code:
4-9.4,b/4-9.5,a
✔✔78. What does the stamp (S) mean and the stamp (h) mean? - ✔✔S= Means Power
Boiler. H= Means Low Pressure Boiler. HP Code: 14-9.43,b - high. LP Code: 4-1.15 -
low
✔✔79. Each superheater she'll be equipped with how many drains? - ✔✔At least 1. HP
Code: 14-9.26/ 14-9.30.
✔✔80. How often does an insurance inspector inspect the boilers? - ✔✔Annually
✔✔81. What is the work done to a boiler that doesn't have to be reported and is
exempt? - ✔✔Replacement of Backings to Man Holes and Hand Holes and Seal Welds
to Tubes
✔✔82. How do you prepare a Brazed joint? A weld? - ✔✔Braze: Clean, Flux, Heat,
Filler Metal Weld: Clean Convex, Weld a Filler Metal, Wire Wheel
✔✔83. Mufflers are not to be installed on ---------? - ✔✔High temperature hot water
boilers. HP Code: 14-9.11
✔✔84. What will happen if your strainers from your discharge and supply lines are
clogged? - ✔✔Deep Vacuum.
✔✔85. How many safety valves are on a miniature boiler? - ✔✔At least 1 ( since only
20 sq ft ). HP Code: 14-11.10
✔✔86. When connecting two different types of metallic pipe what is used in between? -
✔✔A dielectric fitting. NYC Mech: 1203.1.2
✔✔87. Where do you install gas service or distribution line from a new high pressure
tank? - ✔✔" All new high -pressure tank [ sic] installations she'll be located in ROOM
SEPARATED from gas service or distribution lines." RCNY: 20-01,c,2
AND SOLUTIONS 2025/2026 GRADED A+
✔✔61. If there is one safety valve on an electric boiler what is the maximum output? -
✔✔Less than 1100 kW
✔✔62. What pressure shall a system using utility street steam be designed for? -
✔✔200 PSIG at 413* F which that is required by a pressure reducing valve . RCNY:
1210.2.1,2
✔✔63.what chemical should be used for oxygen scavenging? - ✔✔Sodium Sulfite or
Sodium Hydroxide
✔✔64. What is the minimum distance from the wall to the boiler? - ✔✔18" NYC
Construction Code, 24" in High Pressure Code. NYC Mech: 1004.3. HP Code: 14-2.2
✔✔65. What is the lowest part of a water gauge? - ✔✔2" above the lowest permissible
water level HP Code: 14-9. 16,b
✔✔66. What standards are used on gauges? - ✔✔ASME, ANSI. RCNY: 20-03,a,1
✔✔67. What is the only thing that could tap onto a low water cut-off? - ✔✔A Drain. HP
Code: 14-1.14,b,10/ 14-9.36,b,2
✔✔68. How many expansion tank are needed for 6 boilers? - ✔✔1. NYC Mech: 1009.1
✔✔69. Who shall design the boiler system? - ✔✔A registered Architect or a Licensed
Professional Engineer.
✔✔70. Gauge to be measured in the magnitude of 5 PSIG shall not be calibrated in no
less than? - ✔✔" The gauge shall be calibrate in increments not greater than one-fifth of
a pound". RCNY: 20-03,d,3
✔✔71. At what percent do you hydrostatic ally test a boiler? - ✔✔150%. HP Code: 14-
9,40/14-10.24
✔✔72. Beside a log book being inspected by a state boiler inspector who else can look
at the book? - ✔✔The insurance company. HP Code: 14-1.13,c
✔✔73. What is the difference between low pressure and high-pressure safety relief
valves? - ✔✔Low pressure relieves to a drain, while High pressure relieves ego a vent
HP Code: 14-11.10,c/14-10.16/14-9.,a LP Code: 4-5.4,1
, ✔✔74. What is the minimum dial arc on a 2 1/4 gauge? - ✔✔270* RCNY: 20-03,c,2
✔✔75. Where is the steam gauge installed on a mini boiler? - ✔✔On the steam space
side. HP Code: 14-11.9
✔✔76. What is an effective stop for a gauge? - ✔✔The indicating point at ZERO.
RCNY: 20-03,c,6
✔✔77. How long is the pre-purge on a low pressure boiler? - ✔✔90 seconds. LP Code:
4-9.4,b/4-9.5,a
✔✔78. What does the stamp (S) mean and the stamp (h) mean? - ✔✔S= Means Power
Boiler. H= Means Low Pressure Boiler. HP Code: 14-9.43,b - high. LP Code: 4-1.15 -
low
✔✔79. Each superheater she'll be equipped with how many drains? - ✔✔At least 1. HP
Code: 14-9.26/ 14-9.30.
✔✔80. How often does an insurance inspector inspect the boilers? - ✔✔Annually
✔✔81. What is the work done to a boiler that doesn't have to be reported and is
exempt? - ✔✔Replacement of Backings to Man Holes and Hand Holes and Seal Welds
to Tubes
✔✔82. How do you prepare a Brazed joint? A weld? - ✔✔Braze: Clean, Flux, Heat,
Filler Metal Weld: Clean Convex, Weld a Filler Metal, Wire Wheel
✔✔83. Mufflers are not to be installed on ---------? - ✔✔High temperature hot water
boilers. HP Code: 14-9.11
✔✔84. What will happen if your strainers from your discharge and supply lines are
clogged? - ✔✔Deep Vacuum.
✔✔85. How many safety valves are on a miniature boiler? - ✔✔At least 1 ( since only
20 sq ft ). HP Code: 14-11.10
✔✔86. When connecting two different types of metallic pipe what is used in between? -
✔✔A dielectric fitting. NYC Mech: 1203.1.2
✔✔87. Where do you install gas service or distribution line from a new high pressure
tank? - ✔✔" All new high -pressure tank [ sic] installations she'll be located in ROOM
SEPARATED from gas service or distribution lines." RCNY: 20-01,c,2
