Tank Specification

The final tank specification (based on the calculations in Appendix J) is shown in Table 12.1. The tank is represented diagramatically in 

A standard metal staircase and railing skirts the outer edge of the tank providing access to the tank roof. A manhole in the tank roof provides access for internal repairs. Discrete inlet and outlet lines are required to feed into the base of the tank. A pressure relief valve is 

Vertical cylindrical-type tank Fixed conical roof 

Inlet line Nominal pipe size 1.5. schedule number 40S Outlet line Nominal pipe size 6, schedule number 120 Manhole, bursting disc, pressure relief valve on roof No insulation 

The nitric acid storage tank required for the plant has a capacity of approximately 1950 m3. This represents approximately 2600 tonnes 

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Figure 7-40. Storage and process tank specifications work sheet. By permission, The Protectoseal Co.

The preceding results can easily be generalized to j perfectly mixed tanks in series. This has been discussed by many authors Ham and Coe (H2), MacMullin and Weber (M2, M3), Mason and Piret (M5), Kandiner (K2), Katz (K3) and Young (Y3). Other authors have dealt with stirred tanks specifically for use as chemical reactors, and these will be discussed later. The material balance around the ith tank then becomes... 

A pressure relief valve is attached to the roof. This valve is opened automatically when pumping product to, or withdrawing product from, the tank. The valve shuts when pumping stops so that vapour losses from the tank are contained. A bursting disc on the roof also provides emergency pressure relief for sudden pressure rises. The final tank specification is summarized in Table 12.1. 

Tank specifications for a large-scale LH2 storage tank as projected within the WE-NET project, are a storage capacity of 50,000 m with a target boiloff rate of 0.1 % per day. Various insulation concepts are currently being under investigation [32]. 

This equation specifies an intensive property in the tank (specific or molar internal energy) at the point where it has admitted an amount of mass m. An additional property must be specified to fully define the state in the tank. This will depend on the specifics of the problem. For example, if the volume of the... 

Tank storage is broken down into different areas such as welding tank storage and the different types of tanks. Specifications are also given in this subpart on how the tanks should be built. Each tank is required to have certain values that regulate the pressure in the tanks. Tanks are to be stamped or marked with the material the tank is holding. Finally, inspection of these tanks is required in order to prevent an accident from happening. 

In TMU tanks (Specification 106A500X)-at least 5 percent outage at 115°F (46°C). 

It is always preferable to base performance data on the actual operation under review, or at least one similar to it. Care needs to be taken in using manufacturer s performance data for components as these may have been obtained in an idealised environment. The performance in the actual operating environment may be considerably worse due to site- and tank-specific factors. 

There are other portable tank specifications which may be continued in use. For complete listings, refer to Title 49 of the U.S. Code of Federal Regulations, specifically 49... 

By Highway In cylinders on trucks and in tube trailers. As a liquid in tanks (specification MC-338) designed for cryogenic liquids. 

CGA-341 Standard for Insulated Cargo Tank Specification for Cryogenic Liquids. Contains minimum recommended requirements for insu-... 

Many industrially important chemical reactions occur in liquid-liquid systems since heat and mass transfer can be very efficient in agitated heterogeneous stirred reactors. The reaction usually takes place in the dispersed phase. Transport rates depend on the slip velocity between the phases as shown in eqs. (12-63) and (12-64). They are applicable only to single drops that are larger than the turbulent macroscale and are presented for illustrative purposes only. A tank-specific correlation is given later. The heat transfer coefficient, hx, for a single sphere is given by... 

Cargo tanks — right side of the undercarriage near the front of the cargo tank (vehicle inspection items), eye level on the right side near the front of the cargo tank (specification inspection items) ... 

Water supply is the safest bulk supply operation but it must comply with certain hygienic standards. Potable water tanks must be solely used for this purpose, maiataiaed under vessel s planned maintenance plan and audited under International Safety Management (ISM). Pumps and pipework should be flushed with super chlorinated water and than with fresh potable water prior refilling tanks. Hoses used for water transfer should be dedicated for this purpose and cleaned with chlorinated water on weekly basis. Each year hose need to be replaced. Water in potable water tanks of PSV typically may be stored for 7 da3 . After this time water is transferred to drill water tanks. Specific rules regarding water quality management usually are given in national regulations. 

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