Technical Seminar Mike O Connor

Transcription

1 Technical Seminar Mike O Connor Columbus Marriot Northwest March 28, 2014

2 DOT 49 CFR Meter Protection & Location Current Designs & Standards by Current Gas Provider Steel Bollards Bolt Down Bollards Bendable Bollards

3 Pipeline and Hazardous Materials Safety Administration Pipeline Safety Regulations DOT 49 CFR Section Customer Meters and Regulators: Location Each meter and service regulator, whether inside or outside a building, must be installed in a readily accessible location and protected from corrosion and other damage, including, vehicular damage that may be anticipated. However, the upstream regulator in a series may be buried. Each service regulator installed within a building must be located as near as practical to the point of service line entrance. Each meter installed within a building must be located in a ventilated place and not less than 3 from any source of ignition or heat. Where feasible, the upstream regulator in a series must be located outside the building, unless located in a separate metering or regulating building.

4 Purpose & Scope This gas standard provides guidelines and instructions for selecting and installing new and retrofitted gas meter guards for residential and commercial meters subject to vehicular traffic These meter guards are designed to protect against incidental bump damage during typical low-speed maneuvering References: Gas Meter Locations J-15; Electric and Gas Service Requirements, Meter Protection; California Fire Code, Section 1106, Gas Meters and Piping; DOT 49 CFR Section ; American Welding Society, Safety and Health Fact Sheet No. 25: Metal Fume Fever

5 Physical protection must be provided for any gas meter set located in one of the areas described below: Type 1 Locations - Residential Within 3 of the following: A single-family driveway/parking area A roadway, street, alley, or driveway with a curb Within 8 of the following: A roadway, street, alley, or driveway without a curb A multi-family driveway/parking area Type 2 Locations - Commercial Within 3 of the following: A commercial refuse container location Within 8 of the following: A commercial or industrial driveway/parking area A loading dock/freight handling area

6 If a risk of vehicular damage exists at a location, the meter should be protected by barrier posts: Residential areas require a minimum 2 diameter Schedule 40 (0.154 thickness) steel post. Commercial and industrial areas require a concrete-filled, minimum 4 diameter Schedule 40 (0.237 thickness) steel post. When field conditions do not permit exact compliance with these requirements, alternatives may be proposed. Alternative meter guard arrangements must sufficiently protect the meter set and ensure adequate distance for maintenance and meter reading.

7 Core Drilled High quality domestic steel Prime painted recommended Wide variety of standard thicknesses and sizes Coatings: galvanized, powder coated, painted Shapes: square, rectangular, round A500B structural pipe recommended Depth is a function of frost line

8 Structural Pipe A500B Common Sizes Diameter Schedule Wall Thickness O.D. 4" " 4" " 4" " 6" " " " " " " " " XHD

9 Strength Levels Yield Strength Min. 42,000 PSI Tensile Strength Min. Elongation % Min ,000 PSI Lengths Tube Production Up to 74 Tolerances O.D. Size +/- 0.75% Wall Thickness +/- 10% Chemistry Low C, Mn, P, S, and residual elements for superior weld-ability Size Availability 28 sizes Range O.D. to O.D. Gauge Availability Straightness Standard sizes 0.125, 0.188, 0.250, 0.313, 0.375, 0.438, 0.500, /8 x length (ft) divided by five

10 Great looking protection at low cost Improves property appearance/visibility Crack & fade-resistant HDPE Plastic Optional 3M reflective stripes Adhesive free installation Comes in many colors & sizes

11 Before Designed for all weather conditions No more scraping & painting Reduces dings & dents After Easy to clean with any abrasive cleaning agent

12 Easy installation No core drilling or excavation Cost effective Schedule 40 Steel Safety Yellow Powder Coated Weld on cap recommended Optional reflective tape 4" x 36" 4" x 42 6" x 42" Recommended Design ½ thick base plate: 4 dia. = 8 x 8 6 dia. = 10 x 10 ¾ anchor holes

13 No moving parts Flexes on impact Returns to height & shape Elastomeric polymer material Available as bolt down, core drilled, or removable bollard Becoming standard in Europe