Stainless Steel Pipe Data

The Appendix presents useful carbon steel and stainless steel pipe data. 

Stainless Steel Pipe Data (Based on ANSI B36.19 wall thicknesses)... 

A-11 Particle Size Measurement, 434 A-l 2 Viscosity Conversions, 435 A-13 Viscosity Conversions, 436 A-14 Commercial Wrought Steel Pipe Data, 437 A-15 Stainless Steel Pipe Data, 440 A-16 Properties of Pipe, 441 A-17 Equation of Pipes, 450 A-l 8 Circumferences and Areas of Circles, 451 A-19 Capacities of Cylinders and Spheres,... 

Propagation Tests on Aqueous Slurries of RDX, HMX, M-l, and Nitrocellulose , ARLCD-CR-77002, Hazards Research Corp, Denville, Contract No DAAA21 -73-C-0772 (1977) [The purpose of the series of tests described in this report was to determine if a deliberately initiated deton would propagate in any of the aq HMX slurries of various concns tested when confined in horizontal, 2" diam, schedule 40, stainless steel pipes up to 40 in length. The authors conclude the following from their data 1). . Gelled HMX... 

An aerated acid solution containing 10 rfuA/l of dissolved oxygen (O2) moves at 2x10 cm/a in a stainless steel pipe when a critical current density of 10 fiAjcrr passivates the pipe. Calculate a) the thickness of the Helmholtz ionic structural layer (6), b) the limiting ciurent density (it) if the three modes of flux are equal in magnitude, and c) WiU the pipe corrode imder the current conditions Why or Why not Data ... 

Hydraulics in the large-diameter piping have been revealed by one-third scale hot-leg pipe water experiments with an acryl pipe for visualization and a stainless steel pipe for vibration data accumulation (Yamano, 2010 Yamano et al, 2009). The experiment extended the pressure loss coefficient data against Reynolds number (Re) up to Re = 8 X 10. The results showed that the pressure loss coefficient saturates and there is no Re dependency with Re > 3 x 10, showing that the real scale with Re = 3.7 X 10 could be extrapolated from the one-third scale experimental data. 

Detailed vibration data were also accumulated from the water experiment with the stainless steel pipe. With the accumulated data, conservative design power spectmm density for stress analysis on random vibration has been defined as is shown in Fig. 11.7. Random vibration in the hot-leg piping has been analyzed, and the maximum stress is evaluated to be lower than the criteria of high cycle fatigue stress. 

Figure 18.7 for a system defined as stainless steel piping in BWRs. It is seen that the dispersion of the plant data based on such a general definition of the system makes it impossible to predict accurately any future trends. 

Applications of Rp techniques have been reported by King et al. in a study of the corrosion behavior of iron pipes in environments containing SRB. In a similar study, Kasahara and Kajiyama" used Rp measurements with compensation of the ohmic drop and reported results for active and inactive SRB. Nivens et al. calculated the corrosion current density from experimental Rp data and Tafel slopes for 304 stainless steel exposed to a seawater medium containing the non-SRB Vibrio mtriegens. 

SEAL CHAMBER DATA (2.1.6Q.1.7) temperature (°C) PRESSURE (kPa) FLOW (m /h) n SEAL CHAMBER SIZE /TABLE 2.3) TUBING O CARBON STEEL PIPE STAINLESS STEEL PIPINGASSEMBLY (3.5.2.10.1) THREADED O UNIONS SOCKET WELDED FLANGED TUBE TYPE FITTINGS PRESSURE SWITCH /PLAN 52/53) TYPE... 

Exhaust gas temperature measurements are made with a fine-wire R-type thermocouple connected to an Omega model 660 digital readout. Gas samples are extracted using a 6.4-millimeter (0.25-inch) O.D. water-cooled stainless-steel suction probe and then filtered, dried, and analyzed for CO, CO2, O2, UHC, and NOj . Instrumentation includes a Beckman model 864 NDIR CO2 analyzer, Beckman model 867 NDIR CO analyzer, Siemens OXYMAT 5E paramagnetic O2 analyzer, Siemens FIDAMAT 5E-E FID total hydrocarbon analyzer, and a Beckman model 955 Chemiluminescent NO/NOj, analyzer. Certified span gases are used for instrument calibration. PC-based data acquisition is available during experimentation. All of the emissions data reported here were obtained approximately 24 pipe diameters downstream of the fuel injector and represent average exhaust concentrations. 

Figure 4(a) shows details of the test chamber. The teflon jacket-copper block assembly was mounted on a stainless steel plate. The sprayed liquid was drained back to the reservoir installed below the test section. Thermocouples to measure the liquid temperature were installed both upstream of the flow meters and downslream of Ihe orifiee plate. Another thermocouple was used to measure the ambient temperature. The HAGO nozzle and the orifiee plate (for microjets) were attached to the end of a pipe whieh eould be moved up and down. Thus the distance between the sprays or jets and the heated surfaee eould be varied. The liquid pressure was measured using a pressure transducer (0 - 2.07 MPa, 0.25% aeeuraey) just before the sprays or jets were formed. All the data were recorded using two lOTech 16-bit data aequisition boards. 

The stainless steel consumed consists of sheet and strip, plate, bar, and pipe and tube. The data given in the table show that the transportation industry accounts for 23.8%, with the food equipment and construction sectors at 15.3% and 14.2%, respectively. It is interesting to note that the oil and gas sector and chemical sector only had 1.4% users. 

Material factor is 2 for an outer pipe of carbon steel and an inner pipe of stainless steel. Since the CEKII value is 500 for the PCE data in Seider el al, the total module cost of a cooler is given by Equation (10.B.9) ... 

Bowing occurs in cryogenic transfer pipingwhen the pipeline is only partially full of liquid. Such a condition occurs during a normal operating cycle of a missile system when liquid trapped between valves is allowed to boil off. Experimental data[l] from tests on 8-in. and 12-in. uninsulated stainless steel thin-walled pipes partially full of liquid nitrogen indicated that the temperature distribution across the pipeline vertical diameter was as shown in Fig. 1. With the pipe half filled with liquid, the top fibers of the pipe did not cool substantially below room ambient temperature at steady state, while the bottom fibers of the pipe were at liquid temperature. As a result of this extreme temperature gradient, the pipeline tends to bow. For example, a partially full 8-in.-diameter 30-ft cantilevered section of pipe would deflect 35 in. at the free end. 

Life expectancy of pipes can also not be judged solely on the available pitting data these tend to vary a lot. Rate of penetration is not affected by pitting only impingement attack, erosion, etc., should all be taken into account. Pitting and preferential corrosion in the vicinity of welds make the available weight loss data of some austenitic stainless steels meaningless note the loss in local pits or in adjacent welds. 

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