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102 Cards in this Set
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- Back
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Propane Tank is a container that is manufactured to the spec fo the Boilers & pressure Vessels branch of the province for which is built. |
SB rated to 250 psig (1750kPa) for Outdoors SB rated to WP of 312.5 sig (2150kPa) if enclosed. |
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Propane regulators, gauges, piping, hose etc SB protected against damage |
- Must be protected by some Barrier/Guardrails - SB 10ft (3m) from dry grass/ignitable material |
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Regulators Outdoors /Un heated area SB positioned so that the bonnet vent opening discharges vertically downward, except |
- Within a container dome, vent opening SB positoned downward not < 15 Deg from Horz - Single-Stage Reg not > 150 000 btus (44kW) MB installed in a horizontal, provided protected from weather. |
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Final-Stage regulator, not equipped with an internal relief valve, SH immediately (on nipple distance) DS a line relief valve with a discharge setting of NOT < |
- 2 X and not > 3 X the delivery pressure on systems up to 5 psig ( 35kPa) or - 1.5 X and not > 2 X the delivery pressur on system up to 5 psi * Relieveing presure setting of the line relief valve SNB > the the lowest-rated component. |
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Hydrostatic Relief valve SB installed in a liquid Propane system whenever contents could be trapped due to valve closure. |
- Shall terminated as per 5.8.1 cannot connect to venting system or diaphragm gas valve bleed line. - Designed to relieve liquid instead of vapour -Discharge,375 psi (2600kPa) to 500 psi (3400kPa) -Discharge can be combined, if area is equal & header not connected to a vent or bleed line. |
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Discharge from a Regulator vent, line relief valve or Hydrostatic Relief valve S terminate outdoors |
- Not < 3ft (.9m) Hor from any Bld openinging below, level of such discharge or beneath BLD - Not < 10 ft (3m) from Air opening into DV app, Mechanical intake or source of ignition. |
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Construction Site Propane cylinders: - Propane cylinders require a ? - Cannot be located in a ? - Cylinders larger than 1lb require an ? - Manfold of __ x 100 lbs cylinders are allowed |
Construction Site Propane cylinders: - Propane cylinders require a Pressure Regulator - Cannot be located in a Stairway - Cylinders larger than 1lb require an Excess Flow Valve - Manfold of 3 x 100 lbs cylinders are allowed |
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Vehicles equipped with Propane appliances SNB parked indoors excempt when |
- Storage cylinder have been removed - Storage tanks, contents reduced to < 50% of max permitted density & shut-off closed - Parking facility is Approved to this use. |
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Cylinders manufactured after Jan 1, 2008 4lbs (1.8kg) capacity SB OPD equipped. |
- Overfill Protection Device (OPD) developed as a secondary device for correctly filling cylinders by either weight or volume measured by Fixed Liquid Level guage method - Used a #56 oriface |
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Refillable Cyclinder SNB refilled if they are due to requalificaiton. Requalification shall apply: |
- Relief valve SB replaced - Results recorded & kept till expiration date or date of re-inspection. |
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The Relief Valve of a Propane cylinder SB |
- In Direct communication with the Vapour space of the Cylinder. |
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Steel Cylinder SB painted |
With light Colours that are reflective. |
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When Cylinder is in use, SB equipped with a Cylinder Valve & Hand Wheel SB securely attached to the Cylinder Valve Stem or a Wrench for turning the valve step SB Readily Acessible |
On multiple Cylinder installations, a single wrench per installation will be enough |
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Liquid service valve is located in the bottom of a tank (top if siphon tube extends to liquid space) -SB threaded with other then Standard POL |
- SB protected with an Internal Excess-flow Valve |
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Cylinders in storage or connected for use, cylinder-requlating equipment or a cylinder manafold SNB exposted to temperatures in exess of |
125 F (52 C) |
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A Liquid Level Guage also known as a Split Valves |
- Open during a fill will Expell liquid propane when > 80 % filled by Volume. - NO larger then #54 oriface to control discharge |
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The length of the Dip Tube of a Fixed-Liquid Level gauge(spit valve), Shall indicate |
Max level to which a cylinder can be filled. * Shall be stamped on the exterior of the valve with the length indicated DT & mm |
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Cylinders SB filled by weight in accordance with Table 6.1 or Volume in accordance with T 6.2 |
Gas RD at 59F Water weight Propane 0.51 42% Butune 0.58 51% or Propane 80% Full Butane 86% Full |
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Propane (liqd/vapour) SNB discharged to the atmosphere to assist in tranfering the contents of 1 cylinder to another, except to |
A cylinder of 5 lbs (2.2kg) propane capacity or < Venting for the purpose of gauging at a fixed-liquid-leve guage (spit valve) SB permitted. |
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Cylinder that contains Propane Lquid SNB |
Stored inside a structure No > 3 aerosol containers, non-refullable cylinder SB stored in doors. |
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Cylinder storage up to 500 lbs (225kg) SB |
- 10ft (3m) Publie thourghfares / sidewalks or adjoining property line of schools, churches, hospitals, athletic fields or public gathering. |
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Cylinder 501 lbs (225kg) - 2500 (1135kg) SB |
- 15ft (1.5) nearest Bld, adjoining property - 25ft (3m) Public thourghfares / sidewalksor adjoining property line of schools, churches, hospitals, athletic fields or public gathering. |
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Cylinder 2501 lbs(1135kg) - 5000lbs (2270kg) SB |
- 25ft (3m) nearest Bld, adjoining property Public thourghfares / sidewalks or adjoining property line of schools, churches, hospitals, athletic fields or public gathering. |
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Cylinder > 5000 lbs (2270kg) SB |
- 25ft (1.5) nearest Bld, adjoining property - 50ft (3m) Public thourghfares / sidewalks or adjoining property line of schools, churches, hospitals, athletic fields or public gathering. |
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Stored Propance cylinder SB separated from other compressed gases & flamable/combustible liquids by at least |
- 3 ft (1m) from other flammable compressed gas containers - 20 ft (6m) from flammable & combustable liquids or oxidizing, corrosive, or toxic gases. |
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Moving a Propane cylinder form 1 level to another or the roof, maybe done using a |
- Freight, service elevator or construction hoist - Public passenger elevator provided only 1 person involved with the cylinder are in the elevator - Valves SB closed and plugged & protective collar in place. |
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Cylinders connected for use indoors SN |
Have a capacity > 33 1/3 lb (15kg) |
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Cylinders SB directly connected to the Food service appliance w/o the use of a hose, & not more then 2 cylinders per appliance SB connecte at one time |
ok |
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Storage in reestuarants & non-residential food service locations of non-refillabe cylinders of 2.7lbs. SB |
-Limited to 10 cylinders. - Unless stored in a Approved Cabinet then 250 Liters or 638 cylinders are allowed. - Shall have a 2 hour fire-resistance rating. |
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Each cylinder SB set upon a firm, level, weather proof base and SB equipped with a Flexable Connector to offset any movement. |
correct |
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Except for 5 lbs cylinders, SB outside a BLD wiht a discharge from the cylinder relief valve of |
Not < 3 ft (0.9m) Horz from any Bld opening below the level of the relief valve discharge 10ft (3m) Horz form Air intake of appliance or moving air equipment, source of ignition |
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Storage of Cylinders: 45 lbs or less must be Temp must be Max of __ 100 lb against a common bld wall must be ___ ft between groups of 4 |
45 lbs or less must be Capped Temp must be less than 125F Max of 4 100 lb against a common bld wall must be 10 ft between groups of 4 |
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A TANK SH a Max allowable working pressure of: |
Not < 250 psig (1750 kPa) - Conform to CSA Standard B51 & Provincial Regulations covering unfired pressure vessels (Boilers Branch) - Alberta Boilers Safety Association (ABSA) |
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Field weldig of a tank SB only made on the saddle plates or brackets supplied by the manufacturer or the tank |
Correct |
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Tanks wiht a aggregate Cap > 2000 USWG (7500L) SNB installed |
- Under an Electrical transmission line - SB Not < 25ft (7.6m) any direction from any such line nor -Over an underground electrical distribution line and SB Not < 5 ft (1.5m) from any such line.
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When necessary, diking, diversion curbing, or grading SB provided. ** No tank shall be located within 20 ft of another tanks curbing. |
- To prevent any accumulation of flammable or combustible liqueds under a Propane tank - To contain / divert any loss of liquid propane from source of ignition. |
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Tanks SB equipped with a properly sized, Spring-loaded Relief Valve that meets the requirments of the Province |
All Air relief valves shall have direct communication with the Vapour space of Tanks. |
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All relief valves SB so arranged that the possibility of tampering is Minimized. |
If the pressure setting/adjustment is by external means, the relief valve SB provided with means for sealing the adjustment. |
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A shut-off Valve or other device S Not B installed between a relief valve & a Tank, |
Except that a Shut-off valve maybe used when the full required flow capacity is maintained through another relief valve. |
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All relief Valves SB installed to that they are in contact with Vapour space at all times |
- Relief valves, designed for Vapour, not liquid - if liquid is released it will vaporize & expand 270 X, creating a explosion hazard & a refrigeration effect of suffieient strength to freeze the Relief valve to Open or Freeze it off. |
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An emergancy shut-off valve shall incorporate all of the following means of closure |
- Automatic shut-off through Thermal actuation - Manual shut-off from remove location & - Manual shut-off at the installed location |
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Each tank opening utilized for product flow SB |
- Equipped with an Excess-flow valve sized for the application or a Back Check Valve. *A combination Excess-Flow valve & Back Check valve designed for liquid exacuation SNOTB acceptable |
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Tank > 125 USWG (475 L ) capacity that does not have a valve that can be used for liquid evacuatipon SB |
- Provided with a plugged-type combination excess-flow valve & back check valve desiged for this purpose The size of which SB not < NPS 3/4 - A plugged tank opening SNotB acceptable for this purpose. |
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An excess-flow valve SNotB reqd in the Vapour withdrawal service piping from a tank when: |
- Service valve with an attached hand wheel & - Controlling orifice doesn't exceed 5/16 (8mm) threaded into the tank. |
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Instead of using an Excess-Flow valve, a tank opening maybe fitted with a quick-closing INTERNAL Valve that execpt during operating peroids Shall remain closed. |
The internal mechanism for the Valve SB provided with secondary controls, consisting of a fusible link or plug with a melting pint of not > 220F (105C), that shall cause the internal Valve to close in case of fire. |
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A tank of 2000 USWG (7500 L) capacity of less, filled on a Volumetric basis, SB equipped for filling a Vapour space. |
Correct. |
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Any Propane tank that has a capacity over 200 lbs (90kg) SB protected by |
- Combination,back check & Excess-Flow Valve. - 1 double or 2 single back check valves (1 seat SB other then metal-to-metal) or - Positive type shut-off valve wiht either a internal excess flow valve or an internal back check valve. - This is to ensure that propane cannot flow out when the fill hose is disconnected from the filling connection. |
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Tank with a capacity of not > 200 lbs (90kg) of Propane, installed outside may have |
A Single Check Valve of other than metal-to-metal seat attached to the fill connection. |
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All Propane tanks with a capacity of 2000 USWG (7500 L) or more must have a pressure gauge installed on them. |
When the pressure gauge is installed, the Tapping to which it connects is required to have a shut-off valve or excess flow valve. The shut-off or excell flow valve is not needed if the opening is restricted to #54 orifice |
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Every tank requires a liquid level guage, the guage SB |
- Slip tube guage - Fixed liquid level gauge (spit valve) *These all required the release of propane to the Atmosphere to guage a tank. |
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A Float-type guage does not need an excess flow valve attached to it. * These guages are used to determine the amount of Propane in the tank but are NOT to be used in filling the tank. |
- These guages do not require the release of Propane to guage the tank. A float rides on the liquid level & is connected to the needle of the gauge by a linkage that move a magnet. - The magnet causes the needle to move & to display the propane level. |
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Any of the level gauges (split-valves) that require the release of Propane to the atmosphere are reqd to have an Excess-flow valve unless |
- The bleed opening is a # 54 orifice or less - The bypass hole in an excess flow valve must also conform to this rule. |
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A fixed liquid level (split valve) guage must be installed so that the end of the tube inside the tank is at the maximum filling density of the tank. |
This is set at 80% by Volume causing liquid propane to be expelled when the tank is 80% full. |
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Fixed-liquid-level gauges must have the lenght of the tube stamped on the gauge and the tank |
- Prefixed by DT (Dip Tube) and the length in inches or mm. * if the Dip Tube is shorted then what is supposed to be the tank will be overfilled. |
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A tank under 300 lbs (135kg) WC, maybe filled by weight? |
Yes, by code 6.4.2.(a) |
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When a Slip-tube, or equivalent gauge is used, the filling density Shall not exceed that specified on |
Table 7.1 *Rembember that the Max filling density should NEVER exceed 80% by Volume |
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When a Fixed-Liquid-Leve gauge is used on an above -ground storage Tank, the filling density SNotBe exceed |
Table 7.2 *Rembember that the Max filling density should NEVER exceed 80% by Volume |
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Propane in Vapour/liquid phase SnotB dischared to the atmosphere to assist in tranfering the contents of one take to another |
Except to a container with a Max capacity of 5 lbs (2.5) or Propane or less. Venting for the purpose of gauging at the liquid-level gauge SB premitted as described in Clause 7.6.3 |
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A tank SB guaged & filled outdoors or in a building designed for such a purpose |
Yes, by code 7.75 |
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Ninteen clauses deal with installation of undergroud tanks. Tanks are installed above ground on a Maximum of 2 supports due to corrisioin. |
If you must installed underground you need authority haveing jurisdiction |
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The discharge form any relief valve of a tank, except that of a tank located on a vehicle, |
Shall not terminate indoors |
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Tank installed underground > 2000 USWC the discharge safely relief valve w/b piped upward to a height of |
10 ft (3m) above grade level
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A propane tank with a capacity not >125 USWG (475 L) shall have a |
- Relief valve located at lease 3 feet (1m) away Horz form any building opening that is below discharge.- Or be piped away from these area. |
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Tank support for 2000 USWC |
- Max of 2 supports, non combustible material i.e form of piers, pads, saddles, blocks, steel beam skids, or concrete - Top of support Not < 3 " (150mm) above gnd - Clearance between 6" (150mm) - 30" (750mm) - Not indivudual blocks |
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Vertical tanks of 125 USWC or < SB installed with accoordance with Clause 6.7.1 of this code |
- Secured to a reinforced concrete base that extends 1ft (300mm) from all sides & above grade - Max bearing pressure of 2000lbs/ft2 (95kPa) - Limits bottom of the tank to Max of 30" * must be approved |
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Tank support for Over 2000 USWC |
- Max of 2 concrete supports or piers - Corrosion protection where in contact w tank - Below the Frost line designed to bare 2000lbs/ft2 - Clearance of not< 24' (600mm) |
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How is a delivery tank, differant then a customers tank? |
A delivery tank has baffels so the load doesn't shift during transit. |
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Bulk porpane storage tanks, moved from customer location SB In what way is this similar to lifting lugs
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- Secured on the transport vechicle - Max filling density of 5 % - Lifting lugs can only be used with 5% loads. - Web slings should be used and not chains |
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Vaporizers SB protected from tampering & damage, Vaporizers designed to return heated propane to a storage container SB considered Tank Heaters. |
- heating or cooling coils SNotB installed in containers - Vaporizers shall have manually operated valve in each connetion to a container - Shall not raise the pressure in the container in ecess o 215 sig (1500kPa) |
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A building housing a Vaporizer SnotB * An open flame SNotB in a building housing a Vaporizer unless Direct-fired vaporizer. |
- Have a drain to sewer or sump pit
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Tank sizes for residential applications |
Between 500 USWC and 1000 USWC or 1900 L to 3800 L |
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Vaporization factors: |
- Specific heat of the liquid, 0.59 (vapour 0.405) - Ambient temp, cold temp slow vaporization - Size of Tank, > surface area > the Heat Trans - Liquid level, liquid aborbs heat faster - Tank colour, painted white to limit absorbtion - Materal of tank, Al better heat T but tanks Steel |
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How to determine the size of Tank reqd |
- Total BTU load, add your gas appliances - Tank diameter and over length Vaporizatio BTUS = Tank D x Tank L x Factor *Factor from table relating to ambient temp |
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Direct-Fired tank heaters shall not be used Direct-type tank heaters SB intalled only on above ground ASME containers and checked annually |
- Tank heates SB only of Steel Containers - TH similar to Indirect-fired sb away from heat - Shall prevent pressure from > 215 sig - Not heat an empty tank or heat > 90 F |
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Max permitted fill for Propane Cylinder or Tank |
42% by Water Capacity 80 % by Volume |
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Emergancy are required on what tanks |
On all Tank truck / Cargo Liner transfer locations when: - Tank capacity > 5000 USWG (18 900L) or - Manifolded together, utilizing a common manifold liquid transfer line, & tanks have aggregate Volume of 5000 USWG. |
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When a Emergency shut-Off valv is required it SB |
- Installed within 20ft (6.1m) of linear pipe from the terminal end of the hose or swival-type piping. |
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The connection to the Propane tank is usually made with Copper tubing that has a POL fitting on each end. |
- Commonly referred to as a Pig Tail is secured into the Vapour valve & connects to the inlet of the 1st stage regulator. - Copper tubing with flared joints will usually be connected to the outlet of the 1st stage regulator, but steel piping can be used. |
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The fitting welded into the tank for liquid withdrawl extends into the tank_____to prevent sludge in the tank from entering the piping |
3/4" or (19mm) |
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Vapour Service Valves are attached to the outlet tapping of the Tank & Contols the flow of fuel. |
- Connects to Vapour section of the tank and has a Standard POL conection. - Combiination liquid and vapour service valves are possible |
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Service valves are Packless, pressure is held by a flexible Diaphram or O ring rather then packing. - maybe incorportated into a combination valve If it is leaking, must be repaired - Perodic soap checks but requires little service |
If leakage occurs when the tank is full, the valve SB turned to the Fully Open position; This will stop the flow of gas up past the valve stem. |
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Tanks evacuation is aided by allowing the Vapour pressure in Bulk delivery to pressurize the customers tank |
A vapour- equalizing valve is incorporated into the combination valve to accomidate connection of the Vapour spaces of the 2 tanks. - Combination have a integral equalization valve. |
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Filler Valves, allow Propane Liquid to be charged into the tank with little interruption. Prevents passage of Liquid or Vapour out of the tank when filler hose is disconnected. |
Filler valve is contructed by 2 back to back valves.(1 which is not metal to metal) - Check valves are pushed open during filling and closed with springs - The DCV allow main check valve servicing w/o tank evacuation |
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Propane that discharges out of the filler valve shen the nozzle is disconnected indicates that the back check valves are leaking. |
- Could be foreign matter loged in the seating - Light blows froma Rubber mallet may help but replace if reqd. |
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Filler Valve Replacment or to remove the valve Seat the Tank must be empty. In most cases the problem isn't identified until the tank is full and the Nozzle removed. * Filler vavle S have a cap screwed or tethered to the Tank * |
A single check valve with a Neoprene seal can be installed into the Filler Valve as as temporary fix until the tank is remove. |
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Excess flow valves ? |
- Excess Flow valves SB tested every year. - Testing SB done in the Winter months - A simulated break from the furtherst fixture - Have a Bypass hold to allow the valve to return to OPEN Position. |
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What is the problem with the metal-to-metal seats used in Back check valves |
Will not seal gas-tight, therefore if a positive shut off is required a soft-seat type valve SB used in conjunction with this device. |
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Vapour-Equalizing valve is a combination back NC check valve & NO excess flow valve. Function is to equalize pressures between tanks during filling. |
- Back check valve is a contact valve, meaning it is Held open when connection is made. - Excess flow valve allows the vapour to flow through, only closing if the hose connection is lost. |
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The Internal Safetuy Control (ISC) is located in the bottom of the tank. The valve seating surfaces are internal to the tank to protect the valve. * Use this valve to fill other propane containers or connect a vaporizer to ensure adequate supply. |
ISC is equipped with a fusible link that will melt at 212 F (100 C) allowing the spring to close the valve in case of a fire. - Threaded piping to ISB SB Sch # 80 with forged steet fittngs. |
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Liquid evacuation valve is place in teh bottom of a container and similar to Vapour EV it incorporates a check & excess flow valve. Function is to removed contents for repair |
Liquid evacuation valve has a contact type Check valve and Excess flow valve built into it. No reqd if another means of removed contents. |
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If pressure in the container fluctuates as the load increases or decreases |
This indicates the container is too small for the job, - If the gauge registers little or no pressure the tank maybe empty or it maybe too cold to vapourize the liquid. |
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What does HD-5 propane mean |
- Residentail propane is only 95% pure, - 5% paraffin, butane etc over time it can build up in a tank affecting vaporization rate - Pressure guages can help diagnose this problem. |
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What is the most common type of Vaporizer |
- Direct-fire type because it is self-contained and need no outside power. - Ideal for temporary construction heating. - An 80/40 vaporizer will convert 80 US gal (300L) at -40F. - Since they comsume some of the heat produced, 80/40 consumes a little > 102 MBH |
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In some cases a vaporizer is installed so that the supply piping can utilize propane piping which is smaller in size the vapoour. |
Yup |
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Discribe an ACME Thread |
- Quick Closing Coupling QCC or OPD overfill protection - Looks bulky because external threads are visible |
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POL fitting? |
- Vapour only - Straight cut LH thread - Internal relief valve set to 375 psi |
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Propane Hoses rated for a min of __ psig Max length of __ |
- working pressure of 350 psig - max length of 30ft from portable applications |
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Q-CCI cylinder valve, Quick closing coupling has what |
An Excess flow valve that controls the flow of Propane in case of line rupture or breakage - tested when installed and annually - long neck and Acme external thread |
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Trouble shooting Excess Flow Valves |
- simulate a line break before operations - test 1/ year, winter preferred Trouble shooting: not clean break, too great line restriction, improper practice of throttling, improper selection, Tampering or line impurities. |
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Liquid Propane Cylinder: A cylinder that dispenses liquid Propane is required to have an ? |
Liquid Propane Cylinder requires a Internal Excess Flow Valve. - It can have a RH or LH thread or quick disconnect fitting. |
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Cylinder Capacities _ % of volume max _ % of Water Capacity WC Fillig gauges? |
80 % volume max as 80% at 60F will expand to 100% at 130F) - 42 % of Water Capacity WC - Volume fill using a Fixed Liquid Level Guage installed on cylinder or service valve. - Float guage / meter is NOT used to deterime fill density. |
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Latent Heat of Vaporization of Propane is ? |
185 BTU / LB |
