Tubular safety requirements

Auxiliaries for lamps - Ballasts for discharge lamps, (excluding tubular fluorescent lamps) General and safety requirements. ... 

Category Safety Requirements for Scaffolding (1910.28) Tubular welded frame scaffolds... 

The only disadvantage to the use of hydrogen as a carrier gas is the real or perceived explosion hazard from leaks within the column oven. Experience has shown that the conditions required for a catastrophic explosion may never be achieved in practice with forced air convection ovens. However, commercially available gas sensors will automatically switch off the column oven and carrier gas flow at air-hydrogen mixtures well below the explosion threshold limit. A considerable difference in the relative cost of helium in the USA and Europe has resulted in different preferences on the two continents. For open tubular columns helium is widely used in the USA for safety rather than theoretical considerations while hydrogen is commonly used in Europe. 

The general characteristics of novel energy- and resource-saving technology being able to meet the requirements of ecological safety, based on the tubular turbulence reactors, have been confirmed by the pilot-scale testing of the production of ... 

Zero Fow r Test Studies on Martin Power Reactor, bg IF. . Otmeifer and B. B. Roeenthcd (MARTIN),. Ejqpodmental results have bem obtained from die Zero FOwm Test performed on the Ma n Power Reactor core The reactor is a heterogdious water-moderated, fully enriched core using tubular fuel elements. The core is cylindrical in shape and contains approximately 18.6 kilograms of U-235 with a total reactivity of about 15%. In the core are six Y shaped rods which are prototypes of the control rods in the Martin Power Reactor. The Zero Power Test reactor is controlled by three blade-shaped control rods (critical experiment rods). In addition, two or three "Y shaped rods used for safety depending on experimental requirements. 

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