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TEXAS LP-GAS EXAMINATION STUDY GUIDE Appliance Service and Installation Employee Level RAILROAD COMMISSION OF TEXAS |
Railroad Commission of Texas TEXAS LP-GAS EXAMINATION STUDY GUIDE-1 NOTICE This publication is intended for use in its entirety as a guide for persons preparing to take a Railroad Commission LP-gas qualifying examination. Any other use or distribution of this publication or use or distribution of any portion of this pu... |
Railroad Commission of Texas TEXAS LP-GAS EXAMINATION STUDY GUIDE-2 LP-GAS EXAMINATION STUDY GUIDE EMPLOYEE-LEVEL Appliance Service and Installation Who should use this guide? You should use this guide if you plan to take the Railroad Commission's employee-level qualifying examination to perform LP-gas appliance servic... |
Railroad Commission of Texas TEXAS LP-GAS EXAMINATION STUDY GUIDE-3 Where do I get these books? You may download the current edition of the Railroad Commission's LP-Gas Safety Rules in PDF format free online at www. rrc. texas. gov. If you need printe d copies, they may be purchased for $10. 00, tax included, by callin... |
Railroad Commission of Texas TEXAS LP-GAS EXAMINATION STUDY GUIDE-4 NFPA 54 (2018) Appliance. Any device that utilizes gas as a fuel or raw material to produce light, heat, power, refrigeration, or air conditioning. NFPA 54, §3. 3. 5 Appliance Shutoff Valve. A valve located in the piping system, used to shut off indivi... |
Railroad Commission of Texas TEXAS LP-GAS EXAMINATION STUDY GUIDE-5 Gas Vent. A passageway composed of listed factory-built components assembled in accordance with the manufacturer's installation instructions for conveying vent gases from appliances or their vent connectors to the outdoors. NFPA 54, §3. 3. 53 Labeled. ... |
Railroad Commission of Texas TEXAS LP-GAS EXAMINATION STUDY GUIDE-6 Regulator Vent. The opening in the atmospheric side of the reg ulator housing permitting the in and out movement of air to compensate for the movement of the regulator diaphragm. NFPA 54, §3. 3. 105. 3 Safety Shutoff Device. A device that will shut off... |
Railroad Commission of Texas TEXAS LP-GAS EXAMINATION STUDY GUIDE-7 Key Topics NOTE: The list below is not exhaustive. You are responsible for knowing all the facts, rules, standards and procedures that apply to the LP-gas activities you will perform, as well as the rules and standards highlighted in this guide. As you... |
Railroad Commission of Texas TEXAS LP-GAS EXAMINATION STUDY GUIDE-8 Application for a New Certificate An applicant for a new certificate shall: (1) file with AFS a properly completed LPG Form 16 and the applicable nonrefundable rules examination fee specified in §9. 10 of this title (relating to Rules Examination); pas... |
Railroad Commission of Texas TEXAS LP-GAS EXAMINATION STUDY GUIDE-9 Trainees A licensee or ultimate consumer may employ an individual as a trainee for a period not to exceed 45 calendar days without that individual having successfully completed the rules examination (1) The trainee shall be directly and individ ually s... |
Railroad Commission of Texas TEXAS LP-GAS EXAMINATION STUDY GUIDE-10 System Design and Materials All appurtenances and equipment placed into LP-gas service shall be listed by a nationally recognized testing laboratory such as Underwriters Laboratory (UL), Factory Mutual (FM), or American Gas Association (AGA) unless: (... |
Railroad Commission of Texas TEXAS LP-GAS EXAMINATION STUDY GUIDE-11 The maxi‐ mum operating pressure for any pip ing systems located inside buildings shall not exceed 5 psi unless one or more of the following conditions are met: (1)* The piping joints are welded or brazed. (2) The piping joints are flanged and all pip... |
Railroad Commission of Texas TEXAS LP-GAS EXAMINATION STUDY GUIDE-12 Pipe with threads that are stripped, chipped, corroded, or otherwise damaged shall not be used. Where a weld opens during the operation of cutting or threading, that portion of the pipe shall not be used. NFPA 54, §5. 6. 6. 2 Thread joint compounds (p... |
Railroad Commission of Texas TEXAS LP-GAS EXAMINATION STUDY GUIDE-13 Gas Pressure Regulators A line gas pressure regulator or gas equipment pressure regulator, shall be installed where the gas supply pressure exceeds the maximum allowable inlet pressure of the appliance served. NFPA 5 4, §5. 8. 1 Line pressure regulato... |
Railroad Commission of Texas TEXAS LP-GAS EXAMINATION STUDY GUIDE-14 Appliances shall be so supported and so connected to the piping as not to exert undue strain on the connections. NFPA 54, §9. 1. 17 Where the gas supply pressure is higher than the design pressure limits of the appliance, a gas appliance pressure regu... |
Railroad Commission of Texas TEXAS LP-GAS EXAMINATION STUDY GUIDE-15 Two permanent openings, within 12 in. of the top of the enclosure and one commencing w ithin 12 in. of the bottom. Of the enclosure shall be provided. The openings shall communicate directly or by ducts with the outdoors. (1) Vertical ducts, each open... |
Railroad Commission of Texas TEXAS LP-GAS EXAMINATION STUDY GUIDE-16 Combustion air intake openings located on the exterior of the building shall have the lowest side of the combustion air intake openings located at least 12 in. above the adjoining grade level. NFPA 54, §9. 3. 8. 8 An attic in which an appliance is ins... |
Railroad Commission of Texas TEXAS LP-GAS EXAMINATION STUDY GUIDE-17 Use of Nonmetallic Gas Hose Connectors. Listed gas hose connectors shall be used in accordance with the manufacturer's installation instructions and as follows: (1) Indoor. Indoor gas hose con nectors shall be used only to connect laboratory, shop, an... |
Railroad Commission of Texas TEXAS LP-GAS EXAMINATION STUDY GUIDE-18 Appliances can be connected to the building piping by means of a listed gas convenience outlet, in conjunction with a listed appliance connector, used in accordance with the manufacturer's installation instructions. NFPA 54, §9. 6. 7 Where a sediment ... |
Railroad Commission of Texas TEXAS LP-GAS EXAMINATION STUDY GUIDE-19 The use of ventilating hoods and exhaust systems to vent appliances shall be limited to industrial appliances and appliances installed in commercial applications. NFPA 54, §12. 3. 3 A venting system shall satisfy the draft requirements of the applianc... |
Railroad Commission of Texas TEXAS LP-GAS EXAMINATION STUDY GUIDE-20 A vent connector shall be installed without any dips or sags and shall slope upward toward the vent or chimney at least 1⁄4 in/ft. NFPA 54, §12. 11. 7 A vent connector shall be supported for the design and weight of the material employed to maintain c... |
Railroad Commission of Texas TEXAS LP-GAS EXAMINATION STUDY GUIDE-21 A clothes dryer exhaust duct shall not be connected into any vent connector, gas vent, chimney, crawl space, attic, or other similar concealed space. NFPA 54, §10. 4. 4. 1 Ducts for exhausting clothes dryers shall not be assembled with screws or other... |
Railroad Commission of Texas TEXAS LP-GAS EXAMINATION STUDY GUIDE-22 Decorative Appliances for Fireplaces A decorative appliance for installation in a vented fireplace shall be installed only in a vented fireplace having a working chimney flue and constructed of noncombustible materials. These appliances shall not be t... |
Railroad Commission of Texas TEXAS LP-GAS EXAMINATION STUDY GUIDE-23 A vertical distance of not less than 48 in. shall be provided between the top of all food service hot plates and griddles and combustible material. NFPA 54, §10. 13. 1 Listed floor-mounted and built-in household cooking appliances shall be installed i... |
Railroad Commission of Texas TEXAS LP-GAS EXAMINATION STUDY GUIDE-24 Outdoor Cooking Appliances Listed outdoor cooking appliances shall be installed in accordance with the manufacturer's installation instructions. NFPA 54, §10. 19. 1 Unlis ted outdoor cooking appliances shall be installed outdoors with clearances to co... |
Railroad Commission of Texas TEXAS LP-GAS EXAMINATION STUDY GUIDE-25 Wall Furnaces Vented wall furnaces connected to a Type B-W gas vent system listed only for a single story shall be installed only in single-story buildings or the top story of multistory buildings. Vented wall furnaces connected to a Type B-W gas vent... |
Railroad Commission of Texas TEXAS LP-GAS EXAMINATION STUDY GUIDE-26 Placing Appliances in Operation Leak Check Leak checks using fuel gas shall be permitted in piping systems that have been pressure tested NFPA 54, §8. 2. 1 The leakage shall be located by means of an approved gas detector, a noncorrosive leak detectio... |
Railroad Commission of Texas TEXAS LP-GAS EXAMINATION STUDY GUIDE-27 LP-Gas Leak Classification Purging When piping full of air is placed in operation, the air in the piping shall be displaced with fuel gas. NFPA 54, §8. 3. 1. 2 After the piping system has been placed in operation, appliances and equipment shall be pur... |
Railroad Commission of Texas TEXAS LP-GAS EXAMINATION STUDY GUIDE-28 The input rate can be adjusted by ei ther changing the size of a fixed orifice, changing the adjustment of an adjust‐ able orifice, or readjusting the appliance's gas pressure regulator outlet pressure (where a regulator is provided in the appliance) ... |
Railroad Commission of Texas TEXAS LP-GAS EXAMINATION STUDY GUIDE-29 (a) Upon completion of the conversion and testing of LP-gas appliances, the licensee, registrant, or appliance manufacturer making the conversion shall attach to each appliance a decal or tag of metal or other permanent material indicating that the ap... |
Railroad Commission of Texas TEXAS LP-GAS EXAMINATION STUDY GUIDE-30 ALTERNATIVE FUELS TRAINING CENTER 4044 Promontory Point Austin Texas 78744 1. B 2. D 3. C 4. A 5. B 6. B 7. D 8. B 9. A Sample Question Answers |
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