CETP 4.1 Designing & Installing Exterior Vapor Distribution Systems Already Passed

CETP 4.1 Designing & Installing Exterior Vapor Distribution Systems Already Passed _____________ is the sum of the rated btu/hr input for each propane appliance connected to the vapor distribution system. Total gas demand Where do you record the ratings of the btu/hr input for a customers current appliances? Customer gas appliance use profile form _____________ is used to determine the amount of propane required to operate appliances at a reduced demand, and assumes full cycle happen typically, and don't operate simultaneously. Effective system load Most critical issues when selecting a container: Customer's propane demand, above or underground, and vaporization. When a container is sized for vapor service, the goal is to ensure the _________________ is higher than the demand of propane. Vaporization rate when selecting/sizing a tank, it's important to consider if it will be ________________ or ______________. Above ground, underground For underground tanks, it's important to consider __________ and ______________ Soil temperature, frost penetration When sizing a container, it is important to consider the most lite conditions the container will operate in. T/F? False When determining container size, the temperature used for tank sizing should be the lowest temperature anticipated. T/F? True NFPA 58 states all containers installed/filled at a customers home must be ___ ft in any direction from combustibles. 10 NFPA 58 states all containers installed/filled at a customers home must be ___ ft in any direction from an above ground tank/ flammable liquid. 20 NFPA 58 states all containers filled on site must be positioned so the fill connection, relief valve, and liquid level gauge vent are ___ ft from sources of ignition. 10 For DOT cylinders, 500+ gallons of total water capacity on a customers property must be ___ ft or further from building. 25 Above ground tanks with less than 125g water capacity may be placed next to a building and must be ___ ft away from any discharge. 5 _________________ are the most common method used to join steel and wrought iron pipes in residential/small commercial installs. Threaded fittings Acceptable types of fittings include: Steel, malleable iron, ductile iron, press-connect ____________ can be joined using manufacturer prescribed procedures like heat fusion, or mechanical fittings. Polyethylene (PE) pipe For underground installs, tracer wire ________ be in direct contact with the PE pipe. Must also be ___ AWG (american wire gauge). cannot, 14 ________ is flexible, durable, and covered with a plastic sheath. The sheath should be protected as much as possible to prevent corrosion. CSST (Corrugated Stainless Steel Tubing) When sizing pipe/tubing for multiple second stage regulators, the line from the first stage regulator to the second stage regulator must be sized based on the total btu/hr demand beyond any/all second stage regulators. T/F? True Primary factors affecting the rate of corrosion are: Type of metal, environment metal is exposed to Methods used to protect propane containers/metallic piping from corrosion: Paints/protective coatings, cathodic protection, electrically insulating fittings _______ is most corrosive when it is high in moisture, electrical conductivity, acidity, and dissolved salts. Soil Regulator selection is based on _____________ and _____________. Downstream gas demand, service requirements More regualators in the system help increase effiencey. T/F? True All fixed piping systems that serve 1/2 psig appliance systems are required to use a ____________, an ______________, or ______________. 2-stage regulator system, integral 2 - stage regualtor, 2-psi regulator system When the service valve to a container is closed: the regulator spring has forced the diaphram down, fully opening the regualtor orifice when service valve is first opened w/ no appliances on: the orifice completely closes off, creating a condition known as lock-up Regulators are designed to drain condensate from the upper spring case when the vent is pointed sideways. T/F? False If the highest btu/hr output for a single first stage regualtor is not sufficient to meet total gas demand, a second first stage regualtor can be installed parralel. T/F? True Vapor meters have _____________________ formed by a two sided diaphragm. fixed-volume measurement compartments Meters are rated in their propane capacity using two max pressure drops: __ " W.C. & __ " W.C. Addition of __ " W.C. pressure drop in most systems that operate at 11" W.C. could drop pressure below safe range. 1/2, 2, 2 Most recent requalification date is marked on a DOT cylinder and includes: Month/year of last requalification, Requalification Identification Number (RIN), single letter to indicate requalification method that was used ASME tanks that are over _____ gallons water capacity or more cannot be transported on a public roadway when filled with more than __ % it's water capacity, except under certain circumstances. 125, 5 More than likely the container you're installing has been in service and contains some product. If not, it needs to be charged with liquid propane so you can conduct a _________________. leak test If you're transporting cylinders/tanks that contain propane, you need ______________, _______________, and ________________. shipping papers, hazmat certificate of registration, and emergency response info Shipping papers information wise must contain: Proper shipping name, hazard class division, ID/shipping number, indication shippment is "noncorrosive", total quanity of hazardous materials When loading/securing cylinders/tanks, an ideal load places most of the weight on the _______ and ______ axeles with both ____________ and ____________ distribution. Front, back, side to side, front to back When using electrical tools: Use three-wire(grounded) or double insulated electrical tools as perscribed by NIOSH,ANSI, and OSHA, use three wire electrical extension cords with ground lugs, never place any electrical tools near puddles First step in installing DOT cylinders/ASME tanks: Verify container location and meets NFPA 58 requirements The preferred pigtail installation is a _________________. Without it, the line woud be more rigid and susceptible to leaks. loop configuration __________ are used to connect cylinders to an integral 2-stage regualator using a pigtail. T-blocks For underground utilities, verify that the local ___________ service has been contacted and that underground utilities have been identified as acceptable. one-call Before you place your tank in the hole, you must establish a proper ______ to ensure that the tank is set on a ________ surface. level When preping a tank for service, verify that the regualtors vent terminates ________ the anticipated water line, and the adjustment cap is tight. above Underground tanks must be ____________ after they have been prepared for service but before the hole is backfilled. manifolded Testing the cathodic protection system can be done by checking the _____________ potential. This is the store energy around the tank and piping. tsnk-to-soil Additional cathodic testing is required by code, __ to __ months after intial testing. If succesful, testing thereafter follows every __ months. 12, 18, 36 If the cathodic system test fails, repairs can be made to correct it. But should be no later than _____ days after failing test. 180 When testing determines that installed anodes do not provide sufficient voltage to protect the tank, another one may be added, this process is refered to as _________. retrofitting Maxiumum amount of time allowed for temporary installs are ___ months. 12 Installations exceeding ________ gallons require AHJ approval which could include a ________________ and other requirements. 4,000, fire safety analysis Grills, fire pits, and patio heaters are all examples of _______________. This equipment are typically ran off a __ lb cylinder. outdoor living equipment, 20 Vapor distribtuion system piping can be used as a grouding electrode. T/F? False You cannot use PE pipe in aboveground line installations. T/F? True ______________________ are used to join PE pipes in most residental/commercial installations. Mechanical fittings PE pipe can also be joined together with _____________. heat fusion Because PE pipe/tubing are non conductive and can't be found with pipe locating devices, you must install a _________________. tracer wire/ tape Water tubing is sized by _______________ and commonly in two types: type __ approved for liquid, and type __ has greater wall thickness. inside diamter, L, K NFPA 58 specfies 3 types of metal used to install vapor distribution systems: Black iron, wrought iron, galvanized steel You can use pipe thread sealing compounds on the seats if brass flare fittings. T/F? False The point of discharge from the pressure relief valve on a regulator must be __ ft horz from any building opening below discharge and __ ft from any source of ignition. 3,5 ___________________ are used with first stage, integral 2-stage, and high pressure regulators. Pigtail connectors When installing a pigtail, make sure the loop and regulator inlet is ________ than the service valve. higher The piping layout for some vapor distribution systems may need more than one _________________ to provide service to run the appliances that in areas that can't share common piping runs. second stage regulator