Rupture disk, liquids

Sizing, 451, 453, 455, 459, 462 Sonic flow, 461 Types, illustrations, 411-421 Rupture disk, liquids, 462, 466 Rupture disk/pressure-relief valves combination, 463 Safely relief valve, 400 See Relief valve Safety valve, 400, 434 Safety, vacuum, 343 Scale-up, mixing, 312, 314—316 Design procedure, 316-318 Schedules/summaries Equipment, 30, 31 Lines, 23, 24 Screen particle size, 225 Scrubber, spray, 269, 270 Impingement, 269, 272 Separator applications, liquid particles, 235 Liquid particles, 235 Separator selection, 224, 225 Comparison chart, 230 Efficiency, 231... 

The following eonsiders a situation that involves all vapor relief. The size of a vapor phase rupture disk required is determined hy assuming that all of the heat energy is absorbed by the vaporization of the liquid. At the set temperature, the heat release rate q is... 

Application of rupture disk devices to liquid service should be carefully evaluated to assure that the design of the rupture disk device and the dynamic energy of tlie system on which it is installed will result in sufficient opening of the disk. 

The vessel nozzle diameter (inside) or net free area for relief of vapors through a rupture disk for the usual process applications is calculated in the same manner as for a safety relief valve, except that the nozzle coefficient is 0.62 for vapors and liquids. Most applications in this category are derived from predictable situations where the flow rates, pressures and temperatures can be established with a reasonable degree of certainty. 

Type of disk required rupture service liquid service pressure... 

Ap = differential pressure across liquid relief rupture disk, usually equals p, psig AP(dusts) = pressure differential, bar or psi... 

Runaway reactions, 405 Runaway reactions, DIERS, 521-523 Rupture, disk, 401, 418, 435, 455 Burst pressure, 456 Calculations, non-explosive, 455, 459 Code pressure levels, 410 Effects of temperature, 458 Graphite, 418-420, 424 Installation, 422, 423 Liquids, 462 Low pressure, 418, 421 Manufacturing range, 434, 456 Metal, 411 Non-fire, 465 Quick opening, 414, 415 Reverse buckling, 413 Selection features, 434... 

Sizing, safety relief, 436, 437-441 API liquid valve, 444 Balanced valves, 441 Conventional valves, 438 Critical back pressure, 440 Effects of two-phase flow, 437 Hydraulic expansion, 441 Rupture disks, 434 Sub-critical flow, 449 Slurry flow, process pipe, 142-147 Regimes, 143... 

Valve open too far Internal valve malfunction. Operator error. Calibration error. Operation High N2 pressure at HF cylinders, HF vaporizer - HF vaporizer vessel rupture - HF released to environment. High HF flow to HF vaporizer - high HF flow to B-l wing -potential liquid HF to B-l wing. Local pressure indication on N2 line. Local pressure indication between rupture disk and PRV-4 at vaporizer. PRV-3 at V-13 outlet. PRVs on N2 feed lines to HF cylinders. PRV-4 at HF vaporizer. ii If N2 line relief valves lift, vaporizer relief valve should not lift. Relief valve discharges piped to D-wing stack. 

Carbon dioxide is usually purchased in a tank, inside the tank the mobile phase exists as a liquid. Typically, the tank does not come with a pressure gauge but is hooked up to a pressure relief valve and rupture disk, which are set above the tank pressure should a tank leak occur. 

Rupture Disk, safety device of 316L stainless steel prevents overpressurization of vessel includes discharge tube to convey liquid to bottom of console... 

Controls and monitors liquid level, pH, dissolved oxygen, reduction-oxidation (Redox) potential, air rate, temperature, optional automatic sterilization cycle control, rupture disk on vessel, relief valve on jacket... 

Knoche and Wiese (1974) made a number of alterations to the autoclave (Fig. 4.3) originally proposed by Strehlow and Becker (1959). The energy released at the pressure jump is partly needed to break the rupture disk but can cause the autoclave to oscillate. This disturbs the determination of the cell resistances. To minimize the energy, the experimental chamber (8) volume was reduced and the pressure pump (9) was built as an integrated part of the autoclave to reduce all supply lines to a minimum. With this autoclave, water was used as the pressure transducing liquid instead of than kerosene (Strehlow and Becker, 1959), to reduce the compressibility. The conductivity cells were also mounted on a small incline so that no air... 

Gaskets in both dry gas and liquid chlorine systems are made of rubberized compressed asbestos. For wet chlorine gas, rubber or synthetic elastomers are acceptable. PTFE is resistant to both wet and dry chlorine gas and to liquid chlorine up to 200 °C. Tantalum, Hastelloy C, PTFE, PVDF, Monel, and nickel are recommended for membranes, rupture disks, and bellows. 

Note the chlorine gas detector. The liquid chlorine is under pressure and could break pipe connections, so the location at the container section is appropriate. Also note the expansion tank and the rupture disk. Again, because the liquid chlorine is under a very high pressure, any leakage that may occur in the piping may be stopped by rupturing the disk and allowing the chlorine to expand into the expansion tank. 

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