PTC 39.1 - Condensate Removal Devices for Steam Systems

This Code covers devices used in removing condensate and non-condensibles from steam systems. It covers devices used for intermittent or continuous removal of fluids such as steam traps, orifices and valves. The purpose of this Code is to specify and define the practice of conducting tests of condensate removal devices to determine: (a) Condensate discharge capacity, for specified conditions of saturated and subcooled condensate and back pressure. (b) Steam loss, under specified conditions.

B29.400 - Combination, "H" Type Mill Chains, and Sprockets

This Standard is a consolidation of two ASME standards, ASME B29.11M-1994 (Combination Chains, Attachments, and Sprocket Teeth) and ASME B29.14M- 1996 ("H" Type Mill Chains, Attachments, and Sprocket Teeth). These two standards were combined into one because of the similarity of construction and the unusual applications for the two types of chains.

PTC 4.2 - Coal Pulverizers

The purpose of this code is to establish procedures for conducting performance tests to determine: Capacity, Fineness of product, Raw coal feed, Grindability, Moisture, Sizing, Power consumption and Effect of changes in raw coal Characteristics on product fineness, pulverizer capacity, and power consumption. Effect of changes in pulverizer component settings on product fineness, pulverizer capacity, and power consumption. This Code applies to the pulverizing system as a whole, including all the component parts necessary to take the raw coal, hot air and tempering air at the system inlet, and deliver pulverized coal in proper mixture with air and/or flue gas at the desired temperature at the outlet of the system. This Code applies to the most commonly used systems. compressor only, and is applicable only when the unit is operated without inlet pipe or duct, or when the magnitude and the over-all effect of pressure waves within an inlet duct fall within limits specified in this code. Because of pulsating flow conditions inherent in displacement compressors, uniformly accurate methods of tests are not available under all operating conditions. The Code specifically requires the parties to the test to choose from alternate methods described in this Code for conducting such tests.

PTC 12.1 - Closed Feedwater Heaters

The object of this Code is to provide the procedures, direction, and guidance for determining the performance of a close feedwater heater with regard to the following: (a) Terminal Temperature Difference (TTD), which is the difference between the saturation temperature corresponding to the steam inlet pressure and the feedwater outlet temperature; (b) Drain Cooler Approach (DCA), which is the difference between drain outlet temperature and feedwater inlet temperature; (c) tube side (feedwater) pressure loss through the heater; and (d) shell side pressure loss through the desuperheating zone, and through the drain cooling zone. This Code applies to all horizontal and vertical heaters except those with partial pass drain cooling zones. Designs with partial pass drain cooling zones are horizontal heaters with submerged drain cooling zones, and vertical channel-up heaters with drain cooling zones. In those designs, only a portion of the feedwater passes through the drain cooling zones; therefore, there are two feedwater flow streams with different temperature profiles. A feedwater heater is designed to accomplish heat transfer between fluids. The heater design is based on a specific operating condition that includes flow, temperature, and pressure. This specific condition constitutes the design point that is found on the manufacturer's feedwater heater specification sheet. It is not feasible to expect that the test will be conducted at the design point. Therefore, it is necessary to predict the heater performance by adjusting the design parameters for the test conditions. Methods of calculating the predicted heater performance are presented in the Code. These predicted values shall then be compared to corresponding measured test values.

B18.8.1 - Clevis Pins and Cotter Pins

This standard covers the complete dimensional and general data for clevis pins and cotter (split) pins recognized as American national standard. The inclusion of dimensional data in this standard is not intended to imply that all products described are stock production items. Consumers should consult with suppliers concerning the availability of products.

B18.2.8 - Clearance Holes for Bolts Screws and Studs

This Standard covers the recommended clearance hole sizes for #0 through 1.5 in and M1.6 through M100 metric fasteners in three classes of clearing using a close, normal, and loose-fit category.

A112.36.2M - Cleanouts

This standard covers cleanouts including floor and wall types used in concealed piping in and adjacent to commercial, industrial, institutional, and other buildings open to public use. This standard addresses: (a) Definitions; (b) Nomenclature; (c) Connection and Closure Types; (d) Covers and Frames; (e) Materials and Finishes; (f) Variations and Accessories.

B1.12M - Class 5 Interference-Fit Thread

This Standard provides dimensional tables for external and internal plastic flow interference- fit (Class 5) threads of modified National thread form in the coarse thread series (NC) in sizes 0.250 in. through 1.500 in. This is not the ANSI B1.1 UN thread form. It is intended that designs conforming with this Standard will provide adequate torque conditions which fall within the limits shown in Table 8. The minimum torque is intended to be sufficient to insure that externally threaded members will not loosen in service, the maximum torque establishes a ceiling below which seizing, galling, or torsional failure of the externally threaded components is reduced. This Standard provides for the maximum allowable interference. Appendices A,B,C, and D contain useful information that is supplementary to this Standard, such as reprints of the obsolete tentative and alternate Class 5 standards, US Navy ship specifications for elastic interference-fit coarse thread series from 0.250 in through 2.000 in, US Navy ship specifications for Class 5 Modified which includes nickel-copper-aluminum alloy external threads, and an interference metal comparison of standard to nonstandard interference-fit threads.

B5.8 - Chuck and Chuck Jaws

This Standard applies to chucks for use on engine lathes, tool room lathes, turret lathes, and automatic lathes and fit American Standard Spindle Noses of ANSI-B5.9-1967. They may be used on other applications for which they are suitable (see pages 4 and 5 of ANSI-B5.9-1967). It is within the scope of this Standard to establish: (a) duty classes; (b) standard chuck diameters; (c) top jaw interchangeability; (d) mounting interchangeability (USA-Standard Spindle Noses); (e) draw-bar interchangeability for power chucks; (f) identification code for body, master jaws, top jaws dimensions, where interchangeability of chucks may be involved; and (g) nomenclature.

A17 - Checklist for Inspection and Test of Elevators used for Construction

This is a Checklist for Inspection and Test of Elevators Used for Construction Form pad. This checklist is to serve only as a guide. For complete requirements and test procedures refer to ASME A17.1 and A17.2.