ASME A13.1 pdf free download

ASME A13.1-2015 pdf free download.Scheme for the ldentification of Piping Systems.
This Standard is intended to establish a common system to assist in identilication of hazardous materials conveyed in piping systems and their hazards when released in the environment.
This scheme concerns identification of contents of piping systems. It is recommended for the identification of piping systems used in industrial, commercial, and institutional installations, and in buildings used for public assembly. It does not apply to buried pipelines nor to electrical conduits.
Existing schemes for identification shall be considered as meeting the requirements of this Standard ii
(a) such schemes are described in writing
(b) employees are trained as to the operation and hazards of the piping systems
2 DEFINITIONS AND REFERENCE
2.1 Piping Systems
For the purpose of this Standard, piping systems shall include piping of any kind including fittings, valves, and pipe coverings. Supports, brackets, or other accessories are specifically excluded from applications of this Standard. Piping is defined as conduits used to convey, distribute, mix, separate, discharge, meter, control, or snub fluid flows.
2.2 Materials
2.2.1 Flammable. This classification includes fluids, which, under ambient or expected operating conditions, are a vapor or produce vapors that can be ignited and continue to burn in air. The term thus may apply, depending on sen’ice conditions, to fluids defined for other purposes as flammable or combustit’le.
2.2.2 Combustible. This classification includes fluids that can burn, but are not flammable.
2.2.3 OxidIzing. Oxidizing fluid is any gas or Liquid that may, generally by providing oxygen, cause or contribute to the combustion of other material more than air does.
2.2.4 Toxic and Corrosive. This classification includes fluids that are corrosive or toxic, or will produce corrosive or toxic substances when released.
2.2.5 Fire Quenching. This classification includes water, foam, and CO2 used in sprinkler systems and fire fighting piping systems.
2.3 Reference
The latest edition of the following standard shall, to the extent specified herein, form a part of this Standard:
ANSI Z535. 1, Safety Color Code
Publisher: American National Standards Institute (ANSI), 25 West 43rd Street, New York, NY 10036 (www.ansi.org)
3 METHOD OF IDENTiFiCATION
3.1 Legend
This Standard considers a legend to he primary and explicit for identification of contents. Positive identification of the contents of a piping system shall be by lettered legend, giving the name of the contents in full or abbreviated form (see Table 1). Arrows shall be used to indicate direction of flow. Where flow can be in both directions, arrows in both directions shall be displayed. Contents shall be identified by a legend with sufficient additional details such as temperature, pressure, etc., as are necessarv to identify the hazard.
Legends shall be brief, informative, pointed, and simple for greatest effectiveness. Legends shall be applied close to valves or flanges and adjacent to changes in direction, branches, and where pipes pass through walls or floors; and at intervals on straight pipe runs sufficient for identification. Identification may be accomplished by stenciling, the use of tape, or markers. In any situation, the number and location of identification markers shall be based on the particular piping system.ASME A13.1 pdf download.