STODDARD SILENCERS OF CANADA INC.

Enjoy the Silence…

Who We AreWe at Stoddard Silencers are dedicated to the manufacturing and supplying of products that

combat noise pollution as well as vibration and aid in the creation of a safe environment

for people in the workplace.

What We Do

We combat Noise Pollution and for that we design & manufacture Industrial Silencers

All our products are custom-made to meet the criteria specified by the customer, no silencer

can be too small or not big enough.

To Us, every project is unique and we take pride in our work from the beginning to the end.

What We Don’t Make!!!

Gun Silencers

Automotive Silencers

How The Ear Works

What Causes Hearing Loss

           

Healthy cochlea. This person would have normal hearing

Damaged cochlea. This person would be suffering

severe hearing loss

How Loud is LoudEFFECT ON

PEOPLESOUND LEVEL (in

dbA) SOUND SOURCE

High Injurious-------------------------InjuriousIrritating-------------------------        -------------------------

1401301201101008580706050403020100

Jet engineJack hammerPAIN THRESHOLDChain Saw Sheet-metal workshopGENERAL STANDARD FOR 8 HRS Heavy traffic Normal conversationLow conversationQuiet radio music WhisperingQuiet urban roomRustling leavesHEARING THRESHOLD

Effects Hearing loss Increased risk of cardiovascular disease Mood swings Irritability Insomnia Performance Reading & memory

Regulations

Column 1 Column 2SOUND LEVEL DURATION

in decibels hours per24-hour day

90 892 695 497 3100 2102 `1-1/2105 1110 `1/2115 `1/4

Over 115 No exposure

Table

How To Control Noise Induced Hearing Loss

Eliminate noise hazards at the source. Design quieter equipment. Modify existing equipment. Isolate vibrating or noisy parts in a

machine. Substitute noisy device with a quieter

solution.

The Science of Noise Noise unit of measurement is a

decibel. Three scales of measurement

(A,B,C and D) most commonly used is dbA.

Noise measurements usually taken with a sound meter.

Factors for A-weighting Octave Bands

Its All About LocationLocation Typical (dBA)

Wilderness Ambient 35Rural Residential 40Agri Crop Land 44Wooded Residential 51Old Urban Residential 60Urban Housing on Major Street 68Urban High Density Apartment 78Downtown with some Area Construction 793/4 Mile from Major Airport 86Apartment next to Freeway 88

The Answer?

Silencers

Silencers…

Silencer Applications Discharge of pipes for vents Path of a duct for heating and

ventilation On air intake of engines, gas turbines,

rotary blowers and compressors On exhaust of reciprocating engines

and vacuum pump discharges

How a Silencer is Sized Flow Speed Pressure requirements Temperature Connection size Required dbA level

Blower Silencers

Blower Silencers

Inlet and discharge silencers are necessary for any blower installation.

Industries Plastics industry Carpet cleaning Air drying Vacuum cleaning and filtration Wastewater treatment

Types of Blower Silencers Chamber Silencer (Reactive) Absorption Silencer (Dissipative) Chamber-Absorption Combination

(Reactive and Dissipative)

Stoddard Blower Silencers D13 Models (Chamber type) L21 Model (Absorption type) C23 & C26 (Absorption type) D33 Model (Combination type)

Vacuum Blower Silencers D13 & D33 models( Dry Vacuum

Silencers) V31 & V32 Models (Wet Vacuum

Silencers)

Vacuum Silencers

Fan Silencers

Fan Industries Steel manufacturing Casting plants Pulp and paper Mining industry

Types of Fan Silencers

C24 Model (Flat Head Design)

C26 Model (Dished Head Design)

Electrical Motor Silencer

Industries Pulp & Paper Mining Steel Plants Power Plants Casting Plants

Engine Silencers

Industries Natural Gas Compression Power Generation Marine Boat Construction Large Construction Equipment

Grades of Silencers Industrial Grade (E21 & E22) Semi –Residential Grade (E12) Residential Grade (E13) Critical Grade (E14) Hospital Grade (E15) Hospital Plus Grade (E16)

Alternative Engine Silencers

Chamber Resonator (E31,E32 & E33)

Spark Arrestor (E52 & E53)

Spark Arrestor Silencer

Catalytic Silencers

Industries

Natural Gas Compression Power Generation Electrical Power Plants

Gas Turbines

Industries

Power Plants

Power Generation

Sizing Requirements Mass Flow (CFM – cubic feet per

minute) Allowable pressure drop Required noise levels Size of turbine connections Size of transition connection Space and weight limitations

Vent Silencers

Industries Petrochemical plants Mining Pulp and Paper Mills Steel Plants Refineries (Oil, Gas, Sugar) Power Generation

Vent Silencer& Blowdown Applications

Safety Valves Station & Pipeline Blowdowns Steam Ejectors Switch Valves Autoclaves Process Control Valves Boiler Startup and Purge Pressure Regulators

Required Sizing Information

Type of Gas Weight or gravity of gas Mass flow Upstream pressure and temperature Valve type and size Allowable pressure drop Installation (Vertical or Horizontal) Piping Size and Arrangement

Types of Vent Silencers B13 B14 B15 B34

                       

                       

Enclosures

Enclosure Applications Control noise Control contaminants such as

fumes Contain excessive moisture or

temperature

Sizing an Enclosure Height, Length and Width of the

equipment to be enclosed. Noise level requirements Whether the installation is inside

or outside. Operating conditions of equipment

to be enclosed Inlet and Outlet piping size

Accessories

Engine Silencer Accessories

Accessories Continued

Warranty & Disclaimer

WARRANTY: Material and workmanship are guaranteed for one year from date of invoice. We will repair or replace any article proving defective when used for the purpose intended, but no claims for loss, damage or labour will be allowed.

Disclaimer: The warranty stated above is expressly in lieu of all other warranties ,expressed or implied, and in lieu of all other obligations and liabilities on the part of Stoddard Silencers of Canada Inc. that has been altered or repaired by others without its written authorization, nor to any product that has been subject to misuse, negligence or accident.

Contact Information

Contact information

Miguel Castro Regional Sales ManagerCanada & Latin America

(416) 291-4390 Toll Free 1-888-291-4390

miguel@stoddardsilencers.com