Exam (elaborations)
HIGH PRESSURE STEAM EXAM NYC – Q&A
HIGH PRESSURE STEAM EXAM NYC – Q&A
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HIGH PRESSURE STEAM EXAM NYC – Q&A1 The maximum blow down for a safety valve on a forced flow steam
generator or high temperature water boiler shall be of what percent of the set
pressure? ✔️Ans - 10%. HP Code: 14-9.12
3 Who oversees the code for any plumbing installations? ✔️Ans - The NYC
Plumbing Code NYC Mech: 1002.1
4 When will anchorage or guides be inspected? ✔️Ans - Annually. NYC
Mech: 1210.3.1.2
5 How many brass washout plugs does a miniature boiler have? ✔️Ans - Not
less than 3 Brass Washout Plugs 1 inches in size. HP Code 14-11.5
6 How often are high pressure piping expansion joints inspected? ✔️Ans -
Weekly RCNY: 20-02 a.2.i (HP steam piping). NYC Mech: 1210.3.1 (hydronics -
monthly)
7 How long should a Hydronic System be pressure tested for? ✔️Ans - 2
hours at no less than 100 PSIG. NYC Mech: 1208.1
8 How is a gauge protected from excessive pressure? ✔️Ans - Shut off Cock
RCNY: 20-03 c,7
9 Who is authorized in witnessing a test on a gas piping system? ✔️Ans -
Plumbing Inspector, Architect, Licensed PE, Master Plumber, or Agency by the
D.O.B RCNY 20-01 a,1,2
10 How should a remote disconnect be labeled? ✔️Ans - Remote control for
burner. NYC Mech: 1006.8.1
11 When is a fusible plug not needed to be installed on a boiler? ✔️Ans -
Over 200 PSIG. HP Code: 14-10.17, b
12 When shall a power boiler with a MAWP over 400 be tested? ✔️Ans -
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? ✔️Ans - 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? ✔️Ans - 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?
✔️Ans - The Installer. NYC Mech: 1004.7
16 Who will certify and calibrate all gauges utilized for testing? ✔️Ans - 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?
✔️Ans - An approved Adapter Fitting NYC Mech: 1203.1.2
18 What items are exempt from the reporting requirements? ✔️Ans -
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?
✔️Ans - 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?
✔️Ans - HP Code: 14-10.21b / 14-9.2,b
21 The -------------- files an application for a boiler alteration ✔️Ans -
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? ✔️Ans - 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 ? ✔️Ans - 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? ✔️Ans - 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? ✔️Ans - 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? ✔️Ans -
The Installing Company NYC Mech: 1004.7
27 With what safety fitting shall you protect High Pressure Steam and Water
boilers with? ✔️Ans - 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?
✔️Ans - 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? ✔️Ans - 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? ✔️Ans
- 2%. HP Code: 14-9.12
31 When a boiler is de-rated what changes? ✔️Ans - 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?
✔️Ans - 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? ✔️Ans -
Mechanical or Welded NYC Mech: 1203.14
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