Search results
Results from the WOW.Com Content Network
Plastic barrels that are commonly seen on American roadways today began emerging in the late 1970s and 1980s; steel 55-gallon drums were largely phased out by the 1990s, [4] with an outright prohibition on using metal drums appearing in the third revision of the 1988 Edition of the MUTCD, published in September 1993.
A mud is fed to the inlet of the hydrocyclone (desander and/or desilter) to separate particles and the underflow passes to the fine screen mesh where in particles larger than barite are discarded and thrown away. In most drilling operations, a mud cleaner is installed in its mud systems. It is usually located in a mud tank in the same location ...
Many drums nominally measure just under 880 millimetres (35 in) tall with a diameter just under 610 millimetres (24 in), and have a common nominal volume of 208 litres (55 US gal) whereas the barrel volume of crude oil is 42 US gallons (159 L). In the United States, 25-US-gallon (95-litre) drums are also in common use and have the same height.
Unlike the original 49 CFR Salvage Drum requirement, the 'T' Salvage Drum is most commonly an 85-US-gallon (320 L) steel drum that, meets UN Model Regulations test requirement 6.1.5.1.11, which specifies that when filled with water, the drum can qualify for Packing Group II and be dropped 1.2 metres (3.9 ft) on its most critical orientation ...
Earlier I suggested that "55-gallon drum" might just be a description, not a name, but since then I have discovered the two military specs referenced in the article. Since I now know that "55-gallon drum" is short-hand for a whole set of standardized dimensions, I view it as a name and believe it should be listed first even in an SI-first article.
In the oil industry, mud weight is the density of the drilling fluid and is normally measured in pounds per gallon (lb/gal) (ppg) or pound cubic feet (pcf) . [1] In the field it is measured using a mud scale or mud balance. Mud can weigh up to 22 or 23 ppg. A gallon of water typically weighs 8.33 pounds (or 7.48 ppg).
These water treatments often include compounds forming a sludge to entrap such particles; and boilers intended for such water treatment include a structure called a mud drum at the lowest part of the boiler. Bottom blowdown involves periodically opening valves in the mud drum to allow boiler pressure to force accumulated sludge out of the boiler.
Surface mud systems. In the oil drilling industry, effective solids control can be attributed to the overall performance of all the components of the mud systems.Conditioning the drilling fluid with the goal of dramatically lowering maintenance cost, avoiding excessive chemical treatment and maintaining mud systems volume will decrease the chance of equipment failure, unnecessary high mud ...