Standard ANSI

Specifications, Standards, Quality Control, and Health and Safety Factors. Formerly, there was an Insulation Board Institute representing the insulation board industry, but the decline in the market and number of producers has led to its demise. Currently (ca 1997), the industry is represented by the American Hardboard Association (AHA). Specifications and standards are found in American National Standards Institute (ANSI) standard for CellulosicFiberboard (7). The standard includes descriptions of the various types and classes of ftberboard, as well as requirements for physical and dimensional stabiUty properties. QuaUty control tests are limited to a few basic strength and stabiUty tests, including bending strength, bond strength, and moisture resistance. 

Specifications, Standards, Quality Control, and Health and Safety Factors. The hardboard industry is represented by the American Hardboard Association (AHA). Specifications and standards are contained in several ANSI standards (8—11). These standards define the various hardboard product categories as well as specific product qualities required for each group. 

One of the most significant laser safety standards is that developed by the Z-136 committee of the American National Standards Institute (ANSI) (55). Although it is voluntary, many organi2ations use the ANSI standard. It contains a number of items including a recommendation for maximum permissible levels of exposure to laser radiation for various wavelengths, exposure durations, and different parts of the body separation of lasers into four different classes according to the level of ha2ard they present and recommendation of safety practices for lasers in each of the classes. 

Safe Use of Lasers, ANSI Standard Z136.1-1993, Laser Institute of America, Odando, Fla., 1993. 

The electric motors are often the noisiest component of the centrifuge assembly. Most standard motors in the 75—250 kW range develop noise levels of 85 dbA (weighted sound pressure level using filter A, per the ANSI standard). A quiet motor can reduce this level by 5 dbA and should be used whenever noise is of concern. 

Petroleum pipe hues before 1969 were built to ASA (now ANSI) Standard B31.4 for liquids and Standard B31.8 for gas. These standards were seldom mandatoiy because few states adopted them. The U.S. Department of Transportation (DOT), which now has responsi-bihty for pipe-line regulation, issued Title 49, Part 192—Transportation of Natural Gas and Other Gas by Pipeline Minimum Safety Standards, and Part 195—Transportation of Liquids by Pipehne. These contain considerable material from B31.4 and B31.8. They allow generally higher stresses than the ASME Pressure Vessel Code would allow for steels of comparable strength. The enforcement of their regulations is presently left to the states and is therefore somewhat uncertain. 

Appendix 2 ANSI Standard device function numbers 16/550... 

The nuinbers given in parentheses denote the relay numbers us in the ANSI standard. 

Appendix 2 ANSI standard device function numbers... 

The procedure for a d.c. test is the same as for an a.c. one. Due to variable voltage distribution eneountered when eondueting d.c. tests, the ANSI Standard recommends that the matter be referred to the manufaeturer for system voltages 25.8 kV and above. 

Institute (ANSI) standards for purchases of PPE after July 5, 1994. Therefore, if the prior assessment does not include this, a reevahiation of the population should be conducted. 

Head proteetion is diseussed in 1910.135. The employer should make sure that affeeted workers wear head proteetion when working in areas where there is a potential for injury to the head from falling objeets or to reduee eleetrieal shoek hazard. ANSI standards Z89.1-1986 and Z89.1-1969 are ineorporated by referenee. 

Foot proteetion is mentioned in 1910.136. ANSI standard Z41-1991 and Z41.1-1967 are ineorporated by referenee. Hand proteetion is eovered in 1910.138. The employers should make sure that workers are wearing appropriate hand proteetion. 

Underwriters Laboratories Standard UL 525 (1994) applies to both deflagration and detonation flame arresters. It has also been approved as an ANSI standard. Its development is discnssed in Section 2.3.1. 

ANSI STANDARD DEVICE FUNTIDN NUMBER 0 DC CIRCUIT BREAKER... 

Roller Chain. Table 3-18 gives the typical service factor for roller chain drives [5], Table 3-19 gives the basic roller chain design dimensions for ANSI standard roller chains by ANSI chain number [14]. 

Inverted Tooth ( Uenl) Gh ns and Sprocket Teeth," ANSI. Standard B 29,2M-16. API Specifications for. Oil Field Chain and Sprockets, API. Spec. 7E . Fourth,... 

Factory tests establish the pressure head, power, efficiency and NPSH over the complete flow range the pump can deliver running at design speed. British Standard, DIN standard or ANSI standard codes or national variations from such main codes lay down the manner of test procedure, and a minimum requirement is quite often defined by industry codes such as API 610. This is not the place to discuss instrument accuracy, as the codes lay down the limits possible from conventional instruments. There are two main classes of test the commercial requirements normally possible in the maker s test plant and high-accuracy tests that are only possible by using substandard instruments and very sophisticated techniques. 

Process results, mixing, 316, 323, 324 Process safely, 399 Properties of gases/vapors, 439 Pumping of liquids, l60 Pumps centrifugal, 161-164 ANSI Standards, 161 Bearings, 168... 

The paper in this publication meets the requirements of the ANSI Standard Z39.48-1984 (Permanence of Paper)... 

Surface roughness was measured according to ANSI standard 1346.1-(1978) using a Tencor Instruments Alpha-Step 200 stylus profilometer located at the National Nanofabrication Facility of Cornell. Five surface roughness measurements were made for each sample and their average values recorded. Details of the experimental apparatus set-up and its operation are given elsewhere (Dems, B. C. et. al. Inti. Polvm. Proc.. in press.). 

Surface Roughness measured with Tencor Instruments Alpha-Step 200 stylus profilometer per ANSI Standard 1346.1-(1978)... 

A-3.1.1 Welding With the Addition of Filler Metal [See Para. GR-3.2.5(b)(2)]. The ends to be welded shall be prepared by machining or facing to provide a square end that meets the requirements of ANSI standards for tubing. The weld joints shall be properly cleaned within... 

The standards that do exist, such as those provided under American National Standards Institute (ANSI) Z21.83, only cover part of the product market. In the installation of fuel cells for residential use, the ANSI standard does not apply. If it were, some of the requirements could be excessive and push up costs. The standard may also miss problems unique to residential users. 

In addition to these types of tests, many vendors conduct standard physical tests on their products, such as tests for tensile strength and peel strength. Tensile strength indicates the strength per area of material, while the peel strength indicates the force it would take to peel the product from the glass surface. Several vendors indicate that their products exceed American National Standards Institute (ANSI) standard Z97.1 for tensile strength and adhesion. 

Subsequently, under the authority of the Occupational Safety and Health Act of 1970, these same 1968 TLVs and ANSI standards were promulgated by the Occupational Safety and Health Administration (OSHA) as the... 

NOTE Good design practice should be followed in the selection of fabrication methods, welding procedures, and materials for vendor-furnished steel pressureretalning parts that may be subject to temperatures below the ductile-brittle transition temperature. The published design-allowable stresses for metallic materials in internationally recognised standards such as the ASME Code and ANSI standards are based on minimum tensile properties. Some standards do not differentiate between rimmed, semi-killed, fully killed hot-rolled and normalised material, nor do they take into account whether materials were produced under fine- or course-grain practices. The vendor should exercise caution in the selection of materials intended for services between 0 °C (-20 °F) and 40 °C (100 °F). 

The differences between the ANSI (1983) and DOE (1986) standards become most apparent for photons with energies between 30 and 100 keV. For the same irradiation condition, a monitoring device calibrated according to ANSI (1983) may yield values that differ by up to 20 percent from those obtained with a system calibrated according to DOE (1986) or ANSI (1993). The differences between the revised ANSI standard (ANSI, 1993) and the DOELAP standard are smaller because the specifications for the size and shape of the slab phantom are similar. 

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