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TSSA G3 exam with complete detailed solutions, Exams of Safety and Fire Engineering

Princeton UniversitySafety and Fire Engineering

TSSA G3 exam with complete detailed solutions

Typology: Exams

2024/2025

Available from 07/03/2025

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TSSA |! G3 |! exam |! with |! complete |! detailed |!
solutions
1. |! According |! to |! the |! workplace |! safety |! and |! insurance |! board |! act, |! which |! of |! the |!
following |! statements |! is |! part |! of |! the |! workers |! obligation |! in |! all |! cases |! of |! injury |! and
|! or |! disease.
A) |! obtain |! first |! aid |! promptly
B) |! notify |! the |! employer |! of |! any |! injury |! within |! eight |! hours
C) |! notify |! the |! employer |! of |! the |! possible |! onset |! of |! a |! work |! related |!
disease/condition |! within |! two |! working |! days |!
D) |! find |! a |! doctor |! or |! qualified |! practitioner |! who |! will |! give |! a |! second |! opinion |!
concerning |! the |! injury. |! - |! Correct |! answer |! ✔B) |! notify |! the |! employer |! of |! any |! injury |!
within |! eight |! hours
Which |! of |! the |! following |! statements |! is |! true?
A) |! workers |! do |! not |! have |! to |! wear |! hard |! hats |! on |! a |! job |! site, |! even |! if |! instructed |! not |!
to |! do |! so |! by |! employer
B) |! workers |! must |! wear |! the |! protective |! clothing |! that |! the |! employer |! instructs |! them
|! to |! wear |! on |! the |! job |! site |!
C) |! workers |! do |! not |! have |! to |! be |! aware |! of |! the |! contents |! of |! the |! occupational |!
health |! and |! safety |! act.
D) |! unnecessary |! running |! or |! rough |! or |! boisterous |! conduct |! on |! job |! sites |! is |! NOT |!
prohibited |! by |! the |! occupational |! health |! and |! safety |! actoisterous |! conduct |! on |! job |!
sites |! is |! NOT |! prohibited |! by |! the |! occupational |! health |! and |! safety |! act |! - |! Correct |!
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TSSA |! G3 |! exam |! with |! complete |! detailed |!

solutions

  1. |! According |! to |! the |! workplace |! safety |! and |! insurance |! board |! act, |! which |! of |! the |! following |! statements |! is |! part |! of |! the |! workers |! obligation |! in |! all |! cases |! of |! injury |! and |! or |! disease. A) |! obtain |! first |! aid |! promptly B) |! notify |! the |! employer |! of |! any |! injury |! within |! eight |! hours C) |! notify |! the |! employer |! of |! the |! possible |! onset |! of |! a |! work |! related |! disease/condition |! within |! two |! working |! days |! D) |! find |! a |! doctor |! or |! qualified |! practitioner |! who |! will |! give |! a |! second |! opinion |! concerning |! the |! injury. |! - |! Correct |! answer |! ✔B) |! notify |! the |! employer |! of |! any |! injury |! within |! eight |! hours Which |! of |! the |! following |! statements |! is |! true? A) |! workers |! do |! not |! have |! to |! wear |! hard |! hats |! on |! a |! job |! site, |! even |! if |! instructed |! not |! to |! do |! so |! by |! employer B) |! workers |! must |! wear |! the |! protective |! clothing |! that |! the |! employer |! instructs |! them |! to |! wear |! on |! the |! job |! site |! C) |! workers |! do |! not |! have |! to |! be |! aware |! of |! the |! contents |! of |! the |! occupational |! health |! and |! safety |! act. D) |! unnecessary |! running |! or |! rough |! or |! boisterous |! conduct |! on |! job |! sites |! is |! NOT |! prohibited |! by |! the |! occupational |! health |! and |! safety |! actoisterous |! conduct |! on |! job |! sites |! is |! NOT |! prohibited |! by |! the |! occupational |! health |! and |! safety |! act |! - |! Correct |!

answer |! ✔B) |! workers |! must |! wear |! the |! protective |! clothing |! that |! the |! employer |! instructs |! them |! to |! wear |! on |! the |! job |! site.

  1. |! Which |! of |! the |! following |! is |! true: A) |! when |! lifting, |! it |! is |! best |! to |! use |! your |! back |! muscles |! as |! they |! are |! the |! strongest B) |! when |! lifting, |! it |! is |! best |! to |! lift |! by |! bending |! your |! knees |! and |! using |! your |! leg |! muscles |! C) |! when |! lifting |! a |! heavy |! load |! that |! is |! too |! heavy, |! lift |! and |! carry |! it |! short |! distances |! at |! a |! time. |! D) |! none |! of |! these |! statements |! apply |! - |! Correct |! answer |! ✔B) |! when |! lifting, |! it |! is |! best |! to |! lift |! by |! bending |! your |! knees |! and |! using |! your |! leg |! muscles Which |! of |! the |! following |! lists |! best |! describes |! the |! key |! safety |! categories |! which |! should |! be |! considered |! by |! a |! fuel |! technician |! in |! Ontario: A) |! personal |! safety, |! site, |! tools, |! equipment, |! safety |! of |! others, |! OHSA, |! deadlines B) |! personal |! safety, |! tools, |! equipment, |! safety |! of |! others, |! deadlines, |! Ontario |! fuel |! code |! requirements |! C) |! personal |! safety, |! tools, |! equipment, |! safety |! of |! others, |! site, |! OHSA, |! Ontario |! fuel |! codes D) |! personal |! safety, |! tools, |! equipment, |! safety |! of |! others, |! Ontario |! fuel |! codes |! - |! Correct |! answer |! ✔C) |! personal |! safety, |! tools, |! equipment, |! safety |! of |! others, |! site, |! OHSA, |! Ontario |! fuel |! codes
  2. |! How |! often |! do |! portable |! fire |! extinguishers |! have |! to |! be |! inspected? A) |! every |! month B) |! every |! six |! months
  1. |! Why |! should |! garbage |! and |! debris |! be |! removed |! from |! a |! job |! site: A) |! to |! present |! a |! neat |! appearance B) |! to |! prevent |! possible |! slips, |! trips |! or |! falls C) |! to |! reduce |! the |! possibility |! of |! tool |! loss |! in |! debris D) |! to |! reduce |! the |! likelihood |! of |! rodents |! on |! the |! job |! site |! - |! Correct |! answer |! ✔B) |! to |! prevent |! possible |! slips, |! trips |! or |! falls
  2. |! What |! should |! a |! fuel |! technician |! do |! when |! a |! new |! piece |! of |! equipment |! is |! introduced |! for |! use: A) |! carefully |! examine |! the |! equipment |! and |! determine |! how |! to |! use |! it |! properly B) |! ask |! the |! appliance |! owner |! to |! help |! determine |! how |! to |! use |! it |! properly C) |! get |! a |! copy |! of |! the |! user's |! manual |! and |! read |! it |! before |! using |! the |! equipment D) |! refuse |! to |! work |! with |! new |! equipment |! until |! someone |! else |! has |! used |! it. |! - |! Correct |! answer |! ✔C) |! get |! a |! copy |! of |! the |! user's |! manual |! and |! read |! it |! before |! using |! the |! equipment
  3. |! Copper |! wire |! should |! be |! skinned |! with: A) |! knife B) |! pliers C) |! side |! cutters D) |! a |! wire |! stripper |! - |! Correct |! answer |! ✔D) |! a |! wire |! stripper
  4. |! What |! is |! the |! volume |! of |! a |! room |! measuring |! 16'X12'X7'

A) |! 84 |! square |! feet B) |! 192 |! cubic |! feet C) |! 1344 |! cubic |! feet D) |! 16, |! 128 |! square |! feet |! - |! Correct |! answer |! ✔C) |! 1344 |! cubic |! feet

  1. |! What |! is |! purpose |! of |! a |! drill |! gauge: A) |! to |! measure |! the |! diameter |! of |! a |! drill |! bit B) |! to |! measure |! the |! diameter |! of |! a |! drill C) |! to |! measure |! the |! length |! of |! a |! drill D) |! to |! measure |! the |! length |! of |! a |! drill |! bit |! - |! Correct |! answer |! ✔A) |! to |! measure |! the |! diameter |! of |! a |! drill |! bit 14.The |! fastener |! used |! to |! connect |! a |! drain |! hose |! to |! a |! fan |! coil |! unit |! is: A) |! a |! gear |! clamp B) |! copper |! bailing |! wire C) |! electrical |! tape D) |! grappler |! bar |! - |! Correct |! answer |! ✔A) |! a |! gear |! clamp
  2. |! What |! is |! the |! area |! of |! rectangular |! air |! supply |! opening |! measuring |! 12"x10" A) |! 1.0 |! square |! feet B) |! 1.2 |! cubic |! feet C) |! 100 |! cubic |! inches D) |! 120 |! square |! inches |! - |! Correct |! answer |! ✔D) |! 120 |! square |! inches

B) |! ethyl |! mercaptan C) |! oxygen D) |! nitrogen |! - |! Correct |! answer |! ✔D) |! nitrogen

  1. |! By |! definition,the |! specific |! gravity |! of |! a |! gas |! (vapour) |! is |! the: A) |! weight |! of |! the |! gas |! as |! compared |! to |! the |! weight |! of |! air B) |! weight |! of |! the |! gas |! as |! compared |! to |! the |! weight |! of |! an |! equal |! volume |! of |! air C) |! volume |! of |! gas |! compared |! to |! the |! weight |! of |! an |! equal |! volume |! of |! air D) |! volume |! of |! gas |! as |! compared |! to |! the |! weight |! of |! air. |! - |! Correct |! answer |! ✔B) |! weight |! of |! the |! gas |! as |! compared |! to |! the |! weight |! of |! an |! equal |! volume |! of |! air
  2. |! The |! heat |! content |! of |! 1 |! cubic |! foot |! of |! natural |! gas |! is |! approximately: A) |! 1,000 |! Btu B) |! 2,520 |! Btu C) |! 10,000 |! Btu D) |! 25,000 |! Btu |! - |! Correct |! answer |! ✔A) |! 1,000 |! Btu
  3. |! Air |! that |! is |! mixed |! with |! fuel |! prior |! to |! ignition |! is |! called: A) |! primary |! air B) |! secondary |! air C) |! excess |! air D) |! theoretical |! air |! - |! Correct |! answer |! ✔A) |! primary |! air
  1. |! What |! type |! of |! fastener |! is |! used |! to |! join |! two |! electrical |! conductors: A) |! electrical |! coupling B) |! BX |! connector C) |! wire |! nut D) |! electrical |! tape. |! - |! Correct |! answer |! ✔C) |! wire |! nut
  2. |! Reading |! of |! 7.0" |! w.c |! equals: A) |! 1/4 |! psig. |! (1.72kPal) B) |! ½ |! psig. |! (3.45 |! kPa) C) |! 3/4 |! psig.(5.17kPa) D) |! 1 |! psig. |! (6.9kPa) |! - |! Correct |! answer |! ✔A) |! 1/4 |! psig. |! (1.72kPal)
  3. |! Convert |! 40 |! Celsius |! to |! Fahrenheit: A) |! 4.04 |! oF B) |! 40 |! oF C) |! 94 |! oF D)104 |! oF |! - |! Correct |! answer |! ✔D)104 |! oF
  4. |! A |! Bunsen |! flame |! is |! caused |! by: A) |! premixing |! air |! and |! fuel |! prior |! to |! combustion B) |! not |! premixing |! air |! and |! fuel |! prior |! to |! combustion C) |! a |! low |! ignition |! temperature

B) |! less |! than |! that |! of |! air C) |! the |! same |! as |! that |! of |! natural |! gas D) |! less |! than |! that |! of |! natural |! gas. |! - |! Correct |! answer |! ✔A) |! greater |! than |! that |! of |! air

  1. |! The |! minimum |! amount |! of |! air |! required |! for |! complete |! combustion |! to |! burn |! 1 |! cubic |! foot |! of |! natural |! gas |! is |! approximately: A) |! 5.0 |! ft3 |! (0.14 |! m3) B) |! 10.0 |! ft3 |! (0.28 |! m3) C) |! 12.0 |! ft3 |! (0.34 |! m3) D) |! 25.0 |! ft3(0.71 |! m3) |! - |! Correct |! answer |! ✔B) |! 10.0 |! ft3 |! (0.28 |! m3)
  2. |! What |! theoretical |! gas |! to |! air |! ratio |! is |! necessary |! to |! achieve |! perfect |! combustion |! with |! an |! atmospheric |! natural |! gas |! burner. A) |! 1 |! part |! of |! natural |! gas |! to |! 10 |! parts |! of |! air B) |! 5 |! parts |! of |! natural |! gas |! to |! 5 |! parts |! of |! air C) |! 5 |! parts |! of |! natural |! gas |! to |! 15 |! parts |! of |! air D) |! 20 |! parts |! of |! natural |! gas |! to |! 1 |! part |! of |! air |! - |! Correct |! answer |! ✔A) |! 1 |! part |! of |! natural |! gas |! to |! 10 |! parts |! of |! air
  3. |! The |! flame |! temperature |! of |! propane |! is |! approximately: A) |! 1500 |! oF |! (816 |! oC) B) |! 1500 |! oC |! (2732 |! oF) C) |! 3600 |! oF |! (1980 |! oC) D) |! 3650 |! oC |! (6602 |! oF) |! - |! Correct |! answer |! ✔C) |! 3600 |! oF |! (1980 |! oC)

35.Two |! undesirable |! products |! of |! incomplete |! combustion |! are: A) |! CO |! and |! Aldehydes B) |! CO |! and |! N C) |! CO2 |! and |! aldehydes D) |! CO |! and |! heat. |! - |! Correct |! answer |! ✔A) |! CO |! and |! Aldehydes

  1. |! The |! lower |! and |! upper |! flammable |! limits |! of |! propane |! in |! air |! are: A) |! 2.0%-11.0% B) |! 2.4%-9.5% C) |! 4.0%-14.0% D) |! 5.5%-14.S% |! - |! Correct |! answer |! ✔B) |! 2.4%-9.5%
  2. |! The |! major |! constituents |! of |! flue |! gases |! after |! the |! proper |! combustion |! of |! natural |! gas |! in |! air |! are: A) |! CO, |! H2O, |! N2, |! excess |! air, |! and |! heat. B) |! H2O,N2, |! primary |! air, |! and |! heat C) |! CO2, |! H2O, |! N2, |! O2, |! and |! heat D) |! O2, |! CO, |! N2, |! H2O, |! and |! heat |! - |! Correct |! answer |! ✔C) |! CO2, |! H2O, |! N2, |! O2, |! and |! heat
  3. |! The |! flame |! temperature |! of |! natural |! gas |! is |! approximately: A) |! 2500 |! oF |! (1371 |! oC) B) |! 2500 |! oC |! (4532 |! oF)
  1. |! What |! is |! the |! B149. |! 1·05 |! term |! for |! an |! automatic |! valve |! that |! has |! a |! closing |! time |! of |! less |! than |! 5 |! seconds |! upon |! being |! de-energized: A) |! quick |! shut |! off |! valve B) |! fast |! closing |! valve C) |! safety |! shut |! off |! valve D) |! 5 |! second |! valve |! - |! Correct |! answer |! ✔B) |! fast |! closing |! valve
  2. |! Vent |! sizing |! for |! central |! heating |! furnaces, |! boilers |! and |! water |! heaters |! that |! have |! an |! input |! of |! less |! than |! 400,000 |! Btu/h |! (120kW) |! may |! be |! provided |! in |! accordance |! with: A) |! clauses |! 8.2 |! & |! 7.3 |! of |! the |! B149.1-05 |! code B) |! clause |! 8.4 |! of |! the |! B149.1-05 |! code C) |! cIause |! 8.14 |! of |! the |! B149.1-05 |! code D) |! clause |! 8.13 |! of |! the |! B149.1-05 |! code |! - |! Correct |! answer |! ✔D) |! clause |! 8.13 |! of |! the |! B149.1-05 |! code
  3. |! An |! appliance |! shall |! be |! installed |! with |! a |! minimum |! service |! clearance |! of: A) |! 12 |! inches |! (0.3 |! m) B) |! 24 |! inches |! (0.6 |! m) C) |! 36 |! inches |! (1 |! m) D) |! 48 |! inches |! (1.2 |! m) |! - |! Correct |! answer |! ✔B) |! 24 |! inches |! (0.6 |! m)
  4. |! Which |! of |! the |! following |! code |! expressions |! describes |! a |! building |! used |! by |! a |! gather |! person |! for |! civic, |! political, |! travel, |! religious, |! social, |! educational, |! recreational, |! or |! purposes |! for |! the |! consumption |! of |! food |! and |! drink:

A) |! commercial |! building B) |! assembly |! building C) |! industrial |! building D) |! care |! or |! detention |! occupancy |! building |! - |! Correct |! answer |! ✔B) |! assembly |! building

  1. |! Any |! contractor |! operating |! under |! the |! Gaseous |! fuels |! regulation |! is |! required |! to: A) |! register |! as |! a |! contractor B) |! inform |! all |! employees |! to |! comply |! with |! the |! act |! and |! regulations C) |! monitor |! all |! employees |! to |! ensure |! that |! they |! comply |! with |! the |! act |! and |! regulations D) |! all |! of |! the |! available |! choices |! - |! Correct |! answer |! ✔D) |! all |! of |! the |! available |! choices
  2. |! Welded |! gas |! piping |! must |! comply |! with |! the: A) |! national |! building |! code B) |! occupational |! health |! and |! safety |! act |! and |! regulations C) |! technical |! standards |! and |! safety |! act D) |! dangerous |! goods |! transportation |! act |! and |! regulations |! - |! Correct |! answer |! ✔C) |! technical |! standards |! and |! safety |! act
  3. |! Which |! of |! the |! following |! is |! covered |! in |! the |! B149.1-05 |! installation |! code: A) |! installation |! of |! feedstock |! gas |! in |! chemical |! plants B) |! installation |! of |! venting |! systems C) |! petroleum |! refineries

A) |! pre |! draft B) |! forced |! draft C) |! induced |! draft D) |! atmospheric |! draft |! - |! Correct |! answer |! ✔B) |! forced |! draft

  1. |! When |! manufacturer's |! instructions |! do |! not |! state |! the |! required |! clearances |! between |! combustible |! materials |! and |! the |! base |! of |! a |! factory |! built |! chimney, |! the |! installer |! may |! refer |! to |! the: A) |! ontario |! building |! code B) |! occupational |! health |! and |! safety |! act |! and |! regulations C) |! technical |! standards |! and |! safety |! act D) |! dangerous |! goods |! transportation |! act |! and |! regulations |! - |! Correct |! answer |! ✔A) |! ontario |! building |! code
  2. |! What |! is |! the |! term |! for |! a |! device |! used |! to |! control |! and |! maintain |! within |! acceptable |! limits, |! a |! uniform |! outlet |! pressure: A) |! pressure |! control B) |! pressure |! transducer C) |! pressure |! regulator D) |! uniform |! pressure |! device |! - |! Correct |! answer |! ✔C) |! pressure |! regulator
  3. |! A |! notice |! of |! proposal |! to |! deny |! an |! authorization |! will |! inform |! the |! person |! of: A) |! their |! right |! to |! a |! hearing |! with |! the |! director B) |! their |! obligations |! and |! responsibilities |! under |! the |! TSSA |! act

C) |! the |! date |! on |! which |! they |! will |! receive |! certification |! under |! the |! act D) |! suspension |! of |! their |! authorization |! for |! a |! for |! a |! failure |! to |! pay |! - |! Correct |! answer |! ✔D) |! suspension |! of |! their |! authorization |! for |! a |! for |! a |! failure |! to |! pay

  1. |! which |! organization |! is |! responsible |! for |! administering |! fuel |! regulations |! for |! the |! installation |! of |! gas |! and |! oil |! appliances |! in |! Ontario: A) |! technical |! standards |! and |! safety |! authority B) |! canadian |! gas |! association C) |! energy |! mines |! & |! resources D) |! canadian |! standards |! association |! - |! Correct |! answer |! ✔A) |! technical |! standards |! and |! safety |! authority
  2. |! What |! is |! the |! term |! for |! a |! device |! that |! is |! installed |! between |! the |! appliance |! and |! the |! vent |! termination |! and |! provides |! mechanical |! draft? A) |! mechanical |! inducer D) |! power |! burner C) |! vent |! exhauster D) |! power |! venter |! - |! Correct |! answer |! ✔D) |! power |! venter
  3. |! Which |! type |! of |! pilot |! burns |! without |! turndown |! throughout |! the |! entire |! time |! the |! burner |! is |! in |! service, |! whether |! the |! main |! burner |! is |! firing |! or |! not? A) |! continuous |! pilot B) |! interrupted |! pilot C) |! intermittent |! pilot
  1. |! Which |! type |! of |! appliance |! is |! constructed |! so |! that |! all |! the |! combustion |! air |! is |! supplied |! directly |! from, |! and |! the |! products |! of |! combustion |! are |! vented |! directly |! to |! the |! outdoors |! by |! independent |! enclosed |! passageways |! connected |! directly |! to |! the |! appliance: A) |! direct |! vent |! appliance B) |! indirect |! fired |! appliance C) |! indoor/outdoor |! appliance D) |! direct |! fired |! appliance |! - |! Correct |! answer |! ✔A) |! direct |! vent |! appliance
  2. |! Which |! word |! describes |! the |! phrase |! "acceptable |! to |! the |! authority |! having |! jurisdiction": A) |! certified B) |! licensed C) |! approved D) |! endorsed |! - |! Correct |! answer |! ✔C) |! approved
  3. |! What |! is |! the |! name |! for |! a |! valve |! which |! is |! normally |! closed |! and |! allows |! flow |! in |! only |! one |! direction: A) |! flow |! valve B) |! no-flow |! valve C) |! solenoid |! valve D) |! back |! check |! valve |! - |! Correct |! answer |! ✔D) |! back |! check |! valve
  4. |! In |! the |! case |! of |! an |! accident, |! the |! director |! shall: A) |! order |! an |! appropriate |! investigation

B) |! supply |! medical |! assistance |! for |! all |! injuries C) |! prepare |! a |! cost |! estimate |! for |! the |! damages D) |! check |! the |! victims |! drivers |! license |! and |! proof |! of |! insurance. |! - |! Correct |! answer |! ✔A) |! order |! an |! appropriate |! investigation

  1. |! The |! minister |! may |! make |! orders: A) |! establishing |! qualifications |! for |! inspectors B) |! regarding |! inspections |! by |! insurers C) |! establishing |! grades |! of |! gasoline D) |! all |! of |! the |! available |! choices |! - |! Correct |! answer |! ✔D) |! all |! of |! the |! available |! choices 67 |! .Which |! of |! the |! following |! observations |! is |! true: B) |! appliances |! must |! be |! installed |! with |! a |! minimum |! 24 |! inches |! (600mm) |! clearance |! on |! every |! side |! C) |! appliances |! installed |! outdoors |! must |! have |! a |! minimum |! 24 |! inches |! (600mm) |! service |! clearance |! to |! the |! burner |! access |! panel |! only D) |! appliances |! must |! be |! installed |! with |! a |! minimum |! 36 |! inches |! (1m) |! clearance |! on |! the |! side(s) |! where |! service |! is |! required |! - |! Correct |! answer |! ✔A) |! appliances |! must |! be |! installed |! with |! a |! minimum |! 24 |! inches |! (600 |! mm) |! clearance |! on |! the |! side(s) |! where |! service |! is |! required
  2. |! Which |! type |! of |! burner |! is |! equipped |! with |! a |! constant |! ignition |! source |! and |! a |! flame |! arrestor |! and |! is |! intended |! to |! burn |! the |! escaping |! gas |! during |! operations |! to |! replace |! the |! air |! in |! piping |! with |! natural |! gas |! or |! propane: