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Dams could add hundreds of megawatts to nation's electric grid
May 21, 2019 - IEEE GlobalSpec

As many as 32 dams that currently do not generate electricity are planned to be converted to hydroelectric dams, adding more than 330 megawatts (MW) of electric generating capacity to the grid over the next several years. The Energy Department's Energy Information Administration (EIA) said that the...

Report cites corrosion as root cause of California methane leak
May 20, 2019 - IEEE GlobalSpec

Investigators probing the 2015-2016 natural gas leak at Southern California Gas (SoCalGas) Company's Aliso Canyon facility in California said the leak's direct cause was a rupture of an outer 7 in well casing due to microbial corrosion from the outside resulting from contact with groundwater. The...

FCAW-S difficulties and how to overcome them
May 19, 2019 - IEEE GlobalSpec

Self-shielding flux core arc welding (FCAW-S) offers several advantages over other welding techniques. It combines the mobility and omnidirectional welding benefits of a fluxed electrode with the productivity of a wire-fed electrode. It offers protection in dirty/windy environments and is the...

Utility equipment started California's deadly Camp Fire, officials say
May 16, 2019 - IEEE GlobalSpec

California fire investigators say that the Camp Fire was caused by electrical transmission lines owned and operated by Pacific Gas and Electricity (PG&E) and located in the Pulga, California, area. Cal Fire, which investigated the wildfire, said the blaze began in the early morning hours of Nov. 8,...

NTSB: Tesla Autopilot was on at the time of two fatal crashes
May 16, 2019 - IEEE GlobalSpec

A Tesla Model 3 in a fatal crash with a semitrailer in Florida on March 1 was operating on the auto's semi-autonomous Autopilot system, according to investigators with the National Transportation Safety Board (NTSB). The car drove beneath the trailer, killing the driver. The crash was similar to...

Corrosion and faulty repairs led to fatal explosion, NTSB says
May 10, 2019 - IEEE GlobalSpec

A 2017 explosion and fire aboard a barge off the Texas Gulf Coast was the result of a lack of effective maintenance and safety management, the National Transportation Safety Board said. The October 2017 explosion aboard the articulated tug and barge (ATB) Buster Bouchard/B No. 255 was caused by the...

ASTM F1533-20 - Standard Specification for Deformed Polyethylene (PE) Liner
June 1, 2020 - ASTM International

This specification covers requirements and test methods for deformed polyethylene (PE) liner for the rehabilitation of gravity flow and nonpressure pipelines. PE material shall conform to the recommended hydrostatic design basis. The process shall involve installing a deformed liner...

Welding and joining dissimilar metals: Part 2
May 9, 2019 - IEEE GlobalSpec

This article is the conclusion to Welding and joining dissimilar metals: Part 1. Friction welding and other solid-state welding techniques are useful in bonding dissimilar metals. The alloys are not melted in these solid-state techniques. In rotary inertial friction welding, a bar or pipe is spun...

Unique T-slot fastening technology underpins modular automation system
May 9, 2019 - IEEE GlobalSpec

Modular aluminum extrusions from Robotunits. Source: RobotunitsAs a flexible and functional framing solution, the modular T-slot aluminum extrusion system has gained widespread adoption in industry. Aluminum extrusions are now common framing structures in industrial automation, material...

The Transcontinental Railroad at 150
May 8, 2019 - IEEE GlobalSpec

One of the great infrastructure investments in American history was the construction of the Transcontinental Railroad, which was completed on May 10, 1869, with the driving of a final "golden spike" at Promontory Summit near Ogden, Utah. The rail link was a 1,912-mile (3,077 km) continuous railroad...

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