Propane and Natural Gas
 The two major LP-Gases extracted
 Propane
 Butane
 LP-Gases are normally found trapped in
pockets with either cru...
 30% of the Propane and Butane produced today
is extracted Crude Oil. The other 70% is
processed from Natural Gas.
 L...
 There are different types or blends that are
used in the LP-Gases industry.
 The four major blends are:
 Commercial...
 Propane in its natural state is odorless and
colorless.
 A commercial odorant is added so it may be
detected if it l...
 LP-Gases belong to a family of chemical
compounds known as hydrocarbons.
 Hydrogen and carbon atoms only
 Common hy...
 Tasteless
 Colorless
 Usually odorless
 When mixed with the proper amount of air
they can burn.
 Most LP-gases ...
 Most LP-Gases can be stored and transported as
liquids under pressure.
 Under normal outdoor temperatures liquid lp-g...
10
11
 Odorless, colorless, tasteless
 A commercial odorant is added so it may be
detected (same as LP Gas).
13
 Non-toxic
 96% is methane and 4% is ethane
 Listed as hazardous material due to flammability
not toxicity
 It can...
15
16
Regulator
Relief Valve
Valve
17
Meter
18
Meter
Regulator
Valve
19
Square - Handle
L - Handle
T - Handle
20
Closed Position
Open Position
 Natural Gas  Propane
22
Too Rich
14%
4.5%
Too Lean
Too Rich
9.5%
2.1%
Too Lean
23
Natural Gas - 1163º F
Propane - 957º F
Gasoline - 632º F
24
Approx. Range
of Flammability
(% mix with air)
Vapor Density
(Air = 1.0)
Approximate
Ignition
Temperature
Natu...
 Vapor Density
 30% lighter than air
 Propane is 50% heavier
25
Will rise and collect
near the ceiling
Natural Ga...
 Approach from upwind if possible
 Stage at least 400’ away
 One crew should enter and investigate
 A combustible g...
 The source of the leak shall be isolated
 Ventilation of the structure shall be done with
consideration of the proper...
 Approach from upwind if possible
 Stage at least 200’ away
 Gas can migrate through the ground along piping
 If la...
30
Material Color Size Pressure
Bare Steel - - - - - - 2” – 6” Up to 60 psi
Wrapped
Steel
Yellow /
brown ½” – 20”
U...
 Polyethylene piping is buried with a 12g wire for ease
of locating.
 It has nothing to do with grounding or bonding. ...
 Distribution piping is normally buried between 12 and
18” below ground.
32
 Central Hudson shall be notified
 Attempt to protect exposures
 Do not extinguish fire
 Attempt to isolate the sou...
 Attempt to protect exposures and cool the LP tank
 Do not extinguish the fire
 If the source of the LP from the reli...
Natural gas and propane
Natural gas and propane
Natural gas and propane
Natural gas and propane
Natural gas and propane
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Natural gas and propane

Natural Gas and Propane safety
Published on: Mar 3, 2016
Published in: Technology      
Source: www.slideshare.net


Transcripts - Natural gas and propane

  • 1. Propane and Natural Gas
  • 2.  The two major LP-Gases extracted  Propane  Butane  LP-Gases are normally found trapped in pockets with either crude oil or with natural gas.
  • 3.  30% of the Propane and Butane produced today is extracted Crude Oil. The other 70% is processed from Natural Gas.  LP-Gases are processed from crude oil by heating the crude oil until it begins to boil.
  • 4.  There are different types or blends that are used in the LP-Gases industry.  The four major blends are:  Commercial propane  HD5 propane  Commercial butane  Butane/propane blends
  • 5.  Propane in its natural state is odorless and colorless.  A commercial odorant is added so it may be detected if it leaks into the environment.  Effective odorization serves two primary purposes, including:  Permits the detection of leaks.  Reduces gas losses through early detection and repair of leaks.
  • 6.  LP-Gases belong to a family of chemical compounds known as hydrocarbons.  Hydrogen and carbon atoms only  Common hydrocarbons are:  Methane (CH4)  Ethane (C2H6)  Propane (C3H8)  Butane (C4H10)
  • 7.  Tasteless  Colorless  Usually odorless  When mixed with the proper amount of air they can burn.  Most LP-gases are capable of being either a liquid or gas.
  • 8.  Most LP-Gases can be stored and transported as liquids under pressure.  Under normal outdoor temperatures liquid lp-gases expand rapidly into gas.  LP-Gases will expand when heat is applied.  LP-Gases are not toxic, but they present possible inhalation hazards.  Released in a confined space, propane can displace oxygen.
  • 9. 10
  • 10. 11
  • 11.  Odorless, colorless, tasteless  A commercial odorant is added so it may be detected (same as LP Gas). 13
  • 12.  Non-toxic  96% is methane and 4% is ethane  Listed as hazardous material due to flammability not toxicity  It can displace oxygen and pose an asphyxiation hazard. 14
  • 13. 15
  • 14. 16 Regulator Relief Valve Valve
  • 15. 17 Meter
  • 16. 18 Meter Regulator Valve
  • 17. 19 Square - Handle L - Handle T - Handle
  • 18. 20 Closed Position Open Position
  • 19.  Natural Gas  Propane 22 Too Rich 14% 4.5% Too Lean Too Rich 9.5% 2.1% Too Lean
  • 20. 23 Natural Gas - 1163º F Propane - 957º F Gasoline - 632º F
  • 21. 24 Approx. Range of Flammability (% mix with air) Vapor Density (Air = 1.0) Approximate Ignition Temperature Natural Gas 4.5 - 14.0 .70 1163ºF Hydrogen 4.0 – 7.5 .07 1076ºF Propane 2.2 – 9.5 1.56 957ºF Butane 1.9 – 8.5 2.01 912ºF Gasoline 1.4 – 7.6 3.00 632ºF
  • 22.  Vapor Density  30% lighter than air  Propane is 50% heavier 25 Will rise and collect near the ceiling Natural Gas 0.7 Air = 1 Propane 1. 56
  • 23.  Approach from upwind if possible  Stage at least 400’ away  One crew should enter and investigate  A combustible gas meter shall be used to monitor the atmosphere and attempt to locate the source  A reading of 25% LEL shall be a signal to evacuate the structure
  • 24.  The source of the leak shall be isolated  Ventilation of the structure shall be done with consideration of the properties of the gas  Switches shall not be operated inside the structure to eliminate the possibility of an ignition source  Gas valves turned off by AFD personnel shall only be turned on by Central Hudson.
  • 25.  Approach from upwind if possible  Stage at least 200’ away  Gas can migrate through the ground along piping  If large propane tank is suspected, stage 400’ away  Vapors may be dispersed using fog streams  Attempt to identify and shut off the source of the leak  Check surrounding structures for accumulated gas  Notify Central Hudson
  • 26. 30 Material Color Size Pressure Bare Steel - - - - - - 2” – 6” Up to 60 psi Wrapped Steel Yellow / brown ½” – 20” Up to 1000 psi Wrought Iron - - - - - - 2” – 6” Up to 60 psi Polyethylene Plastic Black / orange / yellow ½” – 6” Up to 60 psi Cast Iron - - - - - - 4” – 20” ¼psi Copper - - - - - - ¼” -½” ¼ psi
  • 27.  Polyethylene piping is buried with a 12g wire for ease of locating.  It has nothing to do with grounding or bonding. 31 POLYETHYLENE PIPE
  • 28.  Distribution piping is normally buried between 12 and 18” below ground. 32
  • 29.  Central Hudson shall be notified  Attempt to protect exposures  Do not extinguish fire  Attempt to isolate the source of the gas
  • 30.  Attempt to protect exposures and cool the LP tank  Do not extinguish the fire  If the source of the LP from the relief valve, cooling tank may extinguish the fire  If the tank can be safely approached and shut down, do so accompanied by two fog streams for protection

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