NYC HIGH PRESSURE STEAM EXAM WITH
VERIFIED QUESTIONS AND ANSWERS||
GUARANTEED PASS|| ALREADY GRADED A+||
LATEST UPDATE 2026
What boiler should be used for hot water? - ANSWER-A low pressure hot
water boiler " which operate at a pressure not exceeding 160 psi or a
temperature of 250 degree F at or near the boiler outlet". HP Code: 14-1.1,p,q
What is portable water? - ANSWER-Drinking Water. NYC Mech: 1002.1
What is the flame index of Insulation? - ANSWER-" shall have a maximum
flame spread index of 25"
What is the flame spread index of smoke density? - ANSWER-" a smoke -
developed index not exceeding 450" NYC Mech: 1204.1
What are the allowed takings of a water column? - ANSWER-Feed water
Regulator, Damper Regulator, Drain, Steam Gauge. HP Code:14-9.36,5
What is the seat of a safety valve composed of? - ANSWER-High Pressure is
Stainless " shall be of suitable material to resist corrosion", Low Pressure is
Bronze/Stainless "shall be of material suitable to resist corrosion". HP Code:
14-9.13,b. LP Code: 4-5.3,d
,What is the minimum reading of a digital gauge? - ANSWER-1/1000 of a PSIG.
RCNY: 20-03,e,1
Where do you find the maximum setting for the safety and relief valves? -
ANSWER-The name plate of the Safety and Pressure Relief Valve. HP Code:
14-9.8
How many water gauge glasses are needed over 400 PSIG boilers? - ANSWER-
Boiler operated at pressures over 400 psi shall be provided with Two water
gauge glasses which mat be connected to a single water column or connected
directly to the drum". HP Code: 14-9.16,a
There must be --------- gauge cocks within the visible length of the water glass?
- ANSWER-3 Visible HP Code: 14-9.18,a
When will the LWCO trip? - ANSWER-A 1/4" below the lowest permissible
water level given by the company who installed the LWCO. HP Code: 14-
1.14,b,2
What pressure do you hydrostatic ally test a 400 psi boiler? - ANSWER-600
PSI " she'll be one and one-half times the maximum allowable working
pressure". HP Code: 14-3.5/ 14-10.24
A boiler operates at 300 psi, it is tested once _________________ ? -
ANSWER-Once a month and pressure test every year ( Safety Valve ). HP
Code: 14-9.7,1,I,i iii
Forced steam flow generator safety valve relieve --------- of the MAWP, they
pop at no less than ----% of the MAWP and no higher than -----% MAWP and
shall have -------- "fail safe" to stop the flow of ------ and ---------- to the boiler,
these valves then reseat at no less than -------% - ANSWER-Relieve 100% of
the MAWP pop no LESS than 10% and no HIGHER than 20%, with 2 FAIL
, SAFES stopping the flow of fuel and feed water to the boiler, reseat NO LESS
THAN 10%. Code: 14-9.5
On a boiler proper, if a safety valve pops it must relieve all the pressure without
allowing that pressure to rise more than ------% above the highest pressure rated
- ANSWER-6%. HP Code 14-9.9,e
Safety valves are a ----------_ ----------- type? - ANSWER-Pop - spring type
the minimum lift ----- " and a safety valve blowdown is --------% of the set
pressure, and no greater than ------% and must reset at ----% of the pressure? -
ANSWER-Min lift is 1/16 OF AN INCH, Min safety valve blow down is 2%,
fully lift at 3% and repeats at 96% of the pressure. HP Code: 14-9.12,a
The popping point tolerance shall not exceed 70=? 71-300=? 301-1000=?
1000+ - ANSWER-70= 2 PSIG +/- 71-300=3%+/- 301-1000=10PSIG +/-
1000+PSIG=1%+/- HP Code: 14-9.12,c
> All piping over 2: shall be welded ? - ANSWER-All piping over 2 inches
shall be BUTT-WELDED. Piping 2 inches (51 mm) and under may be socket -
welded or threaded, providing Schedule 80 piping is utilized". NYC Mech:
1210.2.2,(6.1)
All piping under 2" shall be ---------- welded or ----------? - ANSWER-All
piping under 2 inches (51 mm) shall be butt-welded. Piping 2 inches (51 mm)
and under may be SOCKET-WELDED or THREADED, providing schedule 80
piping is utilized". NYC Mech: 1210.2.2,(6.1)
How long do you hydrostatically test a hydronic system? At a pressure not less
than? - ANSWER-" Shall be tested hydrostatically at one and one half times the
system design operating pressure, but not less than 100 PSI. The duration of
each test shall be not less than 2 hours". NYC Mech: 1208.1
VERIFIED QUESTIONS AND ANSWERS||
GUARANTEED PASS|| ALREADY GRADED A+||
LATEST UPDATE 2026
What boiler should be used for hot water? - ANSWER-A low pressure hot
water boiler " which operate at a pressure not exceeding 160 psi or a
temperature of 250 degree F at or near the boiler outlet". HP Code: 14-1.1,p,q
What is portable water? - ANSWER-Drinking Water. NYC Mech: 1002.1
What is the flame index of Insulation? - ANSWER-" shall have a maximum
flame spread index of 25"
What is the flame spread index of smoke density? - ANSWER-" a smoke -
developed index not exceeding 450" NYC Mech: 1204.1
What are the allowed takings of a water column? - ANSWER-Feed water
Regulator, Damper Regulator, Drain, Steam Gauge. HP Code:14-9.36,5
What is the seat of a safety valve composed of? - ANSWER-High Pressure is
Stainless " shall be of suitable material to resist corrosion", Low Pressure is
Bronze/Stainless "shall be of material suitable to resist corrosion". HP Code:
14-9.13,b. LP Code: 4-5.3,d
,What is the minimum reading of a digital gauge? - ANSWER-1/1000 of a PSIG.
RCNY: 20-03,e,1
Where do you find the maximum setting for the safety and relief valves? -
ANSWER-The name plate of the Safety and Pressure Relief Valve. HP Code:
14-9.8
How many water gauge glasses are needed over 400 PSIG boilers? - ANSWER-
Boiler operated at pressures over 400 psi shall be provided with Two water
gauge glasses which mat be connected to a single water column or connected
directly to the drum". HP Code: 14-9.16,a
There must be --------- gauge cocks within the visible length of the water glass?
- ANSWER-3 Visible HP Code: 14-9.18,a
When will the LWCO trip? - ANSWER-A 1/4" below the lowest permissible
water level given by the company who installed the LWCO. HP Code: 14-
1.14,b,2
What pressure do you hydrostatic ally test a 400 psi boiler? - ANSWER-600
PSI " she'll be one and one-half times the maximum allowable working
pressure". HP Code: 14-3.5/ 14-10.24
A boiler operates at 300 psi, it is tested once _________________ ? -
ANSWER-Once a month and pressure test every year ( Safety Valve ). HP
Code: 14-9.7,1,I,i iii
Forced steam flow generator safety valve relieve --------- of the MAWP, they
pop at no less than ----% of the MAWP and no higher than -----% MAWP and
shall have -------- "fail safe" to stop the flow of ------ and ---------- to the boiler,
these valves then reseat at no less than -------% - ANSWER-Relieve 100% of
the MAWP pop no LESS than 10% and no HIGHER than 20%, with 2 FAIL
, SAFES stopping the flow of fuel and feed water to the boiler, reseat NO LESS
THAN 10%. Code: 14-9.5
On a boiler proper, if a safety valve pops it must relieve all the pressure without
allowing that pressure to rise more than ------% above the highest pressure rated
- ANSWER-6%. HP Code 14-9.9,e
Safety valves are a ----------_ ----------- type? - ANSWER-Pop - spring type
the minimum lift ----- " and a safety valve blowdown is --------% of the set
pressure, and no greater than ------% and must reset at ----% of the pressure? -
ANSWER-Min lift is 1/16 OF AN INCH, Min safety valve blow down is 2%,
fully lift at 3% and repeats at 96% of the pressure. HP Code: 14-9.12,a
The popping point tolerance shall not exceed 70=? 71-300=? 301-1000=?
1000+ - ANSWER-70= 2 PSIG +/- 71-300=3%+/- 301-1000=10PSIG +/-
1000+PSIG=1%+/- HP Code: 14-9.12,c
> All piping over 2: shall be welded ? - ANSWER-All piping over 2 inches
shall be BUTT-WELDED. Piping 2 inches (51 mm) and under may be socket -
welded or threaded, providing Schedule 80 piping is utilized". NYC Mech:
1210.2.2,(6.1)
All piping under 2" shall be ---------- welded or ----------? - ANSWER-All
piping under 2 inches (51 mm) shall be butt-welded. Piping 2 inches (51 mm)
and under may be SOCKET-WELDED or THREADED, providing schedule 80
piping is utilized". NYC Mech: 1210.2.2,(6.1)
How long do you hydrostatically test a hydronic system? At a pressure not less
than? - ANSWER-" Shall be tested hydrostatically at one and one half times the
system design operating pressure, but not less than 100 PSI. The duration of
each test shall be not less than 2 hours". NYC Mech: 1208.1
