Hydrogen. The Gas shall contain no carbon monoxide, halogens, or unsaturated hydrocarbons, and no more than four hundred parts per million (400 ppm) of hydrogen.
Hydrogen. 1) Keep hydrogen away from sources of ignition and do not permit any accumulation of gas. A sign must be posted: “HYDROGEN – FLAMMABLE GAS – NO SMOKING – NO OPEN FLAMES.”
Hydrogen. The percent combined hydrogen in a hydrocarbon fuel is a critical factor in controlling stack smoke levels. In general, the higher the hydrogen content in a liquid fuel the lower the smoke level will be. As an example: paraffinic hydrocarbons with high hydrogen contents (14-15%) have much less tendency to smoke than do aromatic hydrocarbons which can have 10% or less hydrogen. Hydrogen is usually determined by an accurate measurement of the amount of water produced in the controlled combustion of a weighed amount of fuel.
Hydrogen i. Hydrogen and hydrogen-based energy supply chain studies
Hydrogen. Hydrogen has many qualities: − it is the most abundant atom on earth, as a constituent of water, 1 AFH2, Paris, E-mail: xxxxxxx.xxxxxx@xxxxxxx.xx 24 Xxxxxxx Xxxxxx − it is the most energetic molecule: 120MJ/kg, i.e. twice as much as natural gas, − it is neither polluting nor toxic, − its combustion produces no pollutant (only water), − it is the lightest of all gases, which is a positive factor in terms of security (it diffuses at high speed in the air), − it has numerous production modes, adapted to all forms of primary energy (electrolysis, thermal water decomposition, reforming), − its transport is easy and environment-friendly (in particular through pipes), − its modes of transformation are varied (fuel cell, thermal engine, turbine, combustion). Notwithstanding all these qualities, some flaws should be mentioned: − its lightness implies a volumetric energy density which is not in favour of its storage as gas, − its air inflammability and detonation limits are more extended that for natural gas (by a factor of 5), on the other hand in a ‘confined’ situation (i.e. trapped with air in a closed volume), these limits are more difficult to reach than with natural gas due to the speed of its diffusion in the air (4 times faster than natural gas), − it has a bad reputation in terms of security and its public acceptability is not obvious!
Hydrogen. The gas shall contain no carbon monoxide, halogens or unsaturated hydrocarbons, and no more than four hundred parts per million (400ppm) of hydrogen. 2. In the event any gas delivered by Customer to Transporter at any Point of Receipt fails to meet the quality specifications set forth above, Transporter may refuse to accept receipt of such gas until Customer or Customer s supplier shall have corrected the quality deficiency. 3. In the event any gas delivered by Transporter to Customer at any Point of Delivery fails to meet the quality specifications set forth above, Customer may refuse to accept receipt of such gas until Transporter shall have corrected the quality deficiency.
Hydrogen o Hydrogen is gaining a lot of momentum in the clusters with its potential for fuel switching in industry, power and heating. o Hydrogen use for heating needs important policy decisions which remain some years away. Applications for hydrogen are also less well developed. o CCS is only way to decarbonise some of the industry and needs to be part of the solution
Hydrogen. Sulfide (H2S) Emergency (Reference should also be made to Appendices Section and H2S Emergency Manual - Area Specific)
Hydrogen. If required for generator cooling, a hydrogen storage system is provided to maintain the hydrogen pressure in the generators. The hydrogen system consists of standard pressurized hydrogen storage cylinders connected to a generator manifold supplied generator.
Hydrogen. The gas will contain less than one half of one percentum (0.5%) by volume of hydrogen. Test method: ASTM D 1945 Chemical analysis of natural gas by gas chromatography.
