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PLUMBING SYSTEM INSPECT DIAGNOSE REPAIR
BACKDRAFTING HEATING EQUIPMENT
DRAIN & SEWER PIPING
FLOODED HEATING EQUIPMENT REPAIR
FLOODED WATER HEATER REPAIR
GAS DETECTION INSTRUMENTS
GAS EXPOSURE EFFECTS, TOXIC
GAS EXPOSURE LIMITS & STANDARDS
GAS FIRED WATER HEATERS
GAS LP & NATURAL GAS SAFETY HAZARDS
GAS PRESSURES LP vs NATURAL GAS
GAS PIPING, VALVES, CONTROLS
GAS BTUH, CUBIC FEET & ENERGY
GAS CONVERSION LP-NATURAL GAS
GAS FLAME & NOISE DEFECTS
GAS IGNITER DEFECTS & REPAIRS
GAS LEAK DETECTION, LP / NG
GAS LIGHTING, PIPES, FIXTURES
GAS PIPING DEFECTS
GAS REGULATORS for APPLIANCES
GAS REGULATORS for LP TANKS
GAS REGLATORS, TWO STAGE
GAS SHUTOFF VALVES
LP GAS TANKS
GAS LP & NATURAL GAS SAFETY HAZARDS
LP & Natural Gas Pressures
METHANE GAS SOURCES
Natural Gas Combustion Products
SPILL SWITCHES - Flue Gas Detection
TYPES OF FUEL GAS SOURCE
MANUALS & PARTS GUIDES - HVAC
METHANE GAS SOURCES
ODORS GASES SMELLS, DIAGNOSIS & CURE
ODORS, SEPTIC or SEWER
ODORS, SULPHUR SMELL SOURCES
OIL TANK PIPING & PIPING DEFECTS
PIPING IN buildings, Clogs Leaks Types
SEWER GAS ODORS
SHUTOFF VALVE LOCATION, USE
SULPHUR & SEWER GAS SMELL SOURCES
Gas meters in homes: inspection, troubleshooting, leaks, reporting: This article explains how to visually inspect natural or piped-in gas meters for defects and safety concerns. This document provides free sample draft home inspection report language for reporting defects in oil and gas piping at residential properties. Here we provide descriptions and photographs of unsafe gas piping, indications of unsafe or improperly operating gas appliances, gas meters, and other gas installation defects are provided.
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Immediate LP or natural gas safety hazards: if there is evidence of an LP or natural gas leak at a building, gas odors, for example, you should:
Indoor Gas Meter Inspection, Defects, & Recommendations
Gas meter location: gas meters are located outdoors except when special permission is given by the gas company. Indoor gas meters increase the risk of an indoor gas leak, require special venting, and can make it more dangerous to shut off gas in an emergency.
If your gas meter is located indoors you should discuss this matter with your gas company. In this photo the gas meter shown is an obsolete model (so perhaps at higher risk of dangerous natural gas leaks into the building (an explosion hazard), and we saw no gas regulator and no vent from the meter to outside. This meter needs to be inspected by the local gas company. It may need to be relocated outside or vented to outside for safety.
Readers whose homes are served by bottled or LP gas should see LP GAS TANKS and can read about LP gas tank gauges at LP Gas Tank Gauges. Also see the US DOE publication "How to Read Residential Electric and Natural Gas Meters".
Natural gas or piped-in gas safety warning: improper installation and even improper inspection and testing methods involving natural or "LP" gas can involve dangerous conditions and risk fire or explosion.
If you smell gas you should leave the building immediately and should do so without doing anything that could create a spark such as operating a light switch or telephone. From a safe location, call your gas company's emergency line and/or your fire department. The text provided here is a working draft and may be incomplete or inaccurate.
If the gas meter is located close to a heating system, such as in this photograph where the piped-in natural gas meter and its control valve were located next to and nearly touching a hot air furnace, you should review the safety and building code compliance installation with your gas company. Gas piping or meters which could leak gas into a heating system or duct system are dangerous.
If the gas meter is close to or touching the ground outdoors or touching a building surface indoors, such as in the photographs above where the piped-in natural gas meter is outside partly buried and inside the gas meter resting on and touching brick in a wet basement, there is a danger of gas meter corrosion and dangerous gas leaks.
Outside the soil needs to be removed so that the meter is not touching dirt. If this corrective measure means that we've created a low area by the foundation it's important to keep roof spillage out of the low spot or we may invite building foundation leaks and basement water entry. A window well can be installed around such an excavation to help keep surface runoff away from the building.
You should review the safety and building code compliance installation with your gas company as soon as possible. Gas piping or meters which could leak gas are dangerous. In this photograph (click the photograph to enlarge it) corrosion is visible on the bottom of the gas meter where it's supported by wet brick.
Gas Meter Capacity or Adequacy
Safety Suggestion: gas meter adequacy: If additional gas equipment has been added to this building since the installation of the original gas service meter, it is possible that the added demand can result in low gas pressure or unsafe operation. The meter itself may need to be replaced with a higher capacity unit for safety. Please review this question with your gas supplier.
Gas Meter Venting Requirements
When a gas meter is used indoors good practice and plumbing codes require that the meter regulator be connected to a vent pipe extending to the outdoors so that in the unlikely event of a leak-failure of the gas pressure regulator, leaking gas will not accumulate in the building where it would form an explosion hazard.
Safety Recommendation: gas regulator vent: We did not find a vent pipe venting the gas regulator (located inside the building) to outside. Such vents are recommended and may be required by local or state codes for safety. Please review this question with your gas supplier.
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