Above ground level

This paper describes the construction and use of a diffusion tube for sampling NO2 from the atmosphere. Examples of its use include the determination of NO2 concentrations at various heights above ground level in an urban environment and through a tree s leaf canopy. 

When the furnace is tilted toward the charging floor, which is on a platform above ground level, soHd scrap is dumped by an overhead crane into the mouth of the furnace. Scrap can form up to 30% of the charge unless it is preheated, when up to 45% may be used. The crane then moves away from the furnace and another crane carries a transfer ladle of molten pig iron to the furnace and pours the molten pig iron on top of the scrap. 

H,. Height of release above ground level, length... 

The center of the puff is located at x = ut. Here x is the downwind direction, y is the crosswind direction, and z is the height above ground level. The initial release occurs at a height above the ground point at x,y,z) = (0,0,0), and the center of the coordinate system remains at the center of the puff as it moves downwind. 

For releases at ground level, the maximum concentration occurs at the release point. For releases above ground level, the maximum ground concentration occurs downwind along the centerline. The location of the maximum is found using... 

Outside the storage area or the space covered by any roof up to 1.5 m above ground level and within the distance set out for a fixed source of ignition in Table 9.17, column 3. 

The entire space within the building or storage area and outside any doorway, low level ventilator or other opening into the store within the separation distance set out in Table 9.1 7, column 3, up to a height of 1.5 m above ground level. 

Reference level 0 is located in the center of the gate opening, i.e., 2 m above ground level. 

Overflow should end a little above ground level... 

Investigations revealed that the initial fire was due to a small, continuous release from the transfer lines. The leakage was ignited by hot surfaces of the truck s engine. The fireball was found to have a maximum diameter of approximately 40 m (130 ft). It rose to 25 m (80 ft) above ground level. 

To account for the fact that the blast wave from the vessel will not be perfectly symmetrical, P, and 7 are adjusted, depending on R. To account for the vessel s placement slightly above ground level, P is multiplied by 1.1. To account for the vessel s cylindrical shape, P, is multiplied by 1.6 and 7 is multiplied by 1.1. Thus,... 

Location The postulated release would occur at an elevation of about 6 m above ground level (a.g.l.) and in a horizontal direction. The flashing liquid jet is likely to impact on surrounding equipment. 

This case has the same ignition position as Case 1, that is, outside the process line area. The cloud is a large one covering the whole calculation domain up to 20 m above ground level. 

Geographical location of tank (e.g. indoors/outdoors, height above ground level, available space, accessibility, etc.) ... 

Filling pipes should be as short as possible and free from sharp bends. The terminal should be in a convenient position to allow easy coupling of the vehicle hose connection, wherever possible within 5 meters (15 ft) of the hard standing for vehicle delivery. The most suitable height for a filling pipe is about 1 m (3 ft) above ground level and clear of all obstructions. 

The water level in a water tower is 110 ft above ground level. The tower supplies water to a subdivision 3 mi away, through an 8 in. sch 40 steel water main. If the minimum water pressure entering the residential water lines at the houses must be 15 psig, what is the capacity of the water main (in gpm) If there are 100 houses in the subdivision and each consumes water at a peak rate of 20 gpm, how big should the water main be ... 

A water tower supplies water to a small community of 800 houses. The level of the water in the tank is 120 ft above ground level, and the water main from the tower to the housing area is 1 mi of sch 40 commercial steel pipe. The water system is designed to provide a minimum pressure of 15 psig at peak demand, which is estimated to be 2 gpm per house. 

An inflatable bellows used in a pneumatic suspension system for motor transport irrespective of load the centre of gravity of the vehicle can be maintained at a constant height above ground level with appropriate control systems. 

Chlorine flow to environment Internal relief valve sticks open Both internal pressure valves fail open and relief valve opens Operation Potential low chlorine flow to Tower Water Basin -see above Chlorine released to environment - potential personnel injury due to exposure Distinctive odor Pressure check valve located outdoors -unlikely to accumulate significant concentration III Action Item Consider venting relief valve above ground level... 

Case 13 Plume with Continuous Steady-State Source at Height Hr above Ground Level and Wind Moving in x Direction at Constant Velocity u... 

For a plume the highest concentration is always found at the release point. If the release occurs above ground level, then the highest concentration on the ground is found at a point downwind from the release. 

For a puff the maximum concentration is always found at the puff center. For a release above ground level the puff center will move parallel to the ground and the maximum concentration on the ground will occur directly below the puff center. For a puff isopleth the isopleth is close to circular as it moves downwind. The diameter of the isopleth increases initially as the puff travels downwind, reaches a maximum, and then decreases in diameter. 

For heavier-than-air vapors, if the material is released above ground level, then the material will... 

A butane tank is located 500 ft from a residential area. Estimate the minimum instantaneous release of butane required to produce a vapor concentration in the residential area equal to the LFL for butane. What continuous release rate is required Assume that the release occurs at ground level. Will the minimum amount increase, decrease, or stay the same if the release occurs above ground level ... 

Chemical industrial facilities have a number of assets that are raised above ground level, including raised water tanks, raised chemical tanks, raised piping systems, and... 

Fig. 7.7. Topographical model of the active site of pig liver esterase as proposed by Jones and co-workers [70] [71]. The model postulates two hydrophobic sites, one large (HL) and one small (Hs), and two polar binding sites, one in the front (PF) and one in the back (PB). The serine sphere shows the approximate zone of action of the catalytic OH group, a) A view from the top with the dimensions in A the sites HL, Hs, and PF are at ground level and have an elevation of 3.1 A, 2.3 A, and 1.6 A, respectively, while PB is located 1.5 A above ground level and has an elevation of 0.8 A. b) A computer-generated perspective view with dimethyl phenylmalonate positioned to have its pro-S ester group close to the catalytic site [72a].

In this situation, the Gibbs function G may be a function of h, the height above ground level, as well as of T, P, and... 

Three to four feet of A inch Teflon tubing connects each instrument to sampling man. Are wind instruments on same mast as station probe(s) inlei(s)>-299F No. If yes how much higher> - - - ft. If no, distance and direction from probe(s), 5 ft., direction J — Height above Ground level 24 A f oof 13 ft., sea level. 24 ft. 

Orientation — on the west end of the pesticide and spray equipment storage building with full south and west exposure to sun and wind which maximizes evaporation. Raised above ground level to prevent flooding by surface water from heavy rains. 

Editor That seems to correlate with our observation that the molecules tend to adsorb on soil particles and dust, rather than remain in the air as explosive vapor. I take it that you mean that some wind is needed to move these particles in order to make them available above ground level to the animal. So, a pure vapor plume in air is not as rich a source as wind carried dust and soil particles. Is that correct ... 

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