ASME A13.1:2015 pdf free download

ASME A13.1:2015 pdf free download.Scheme for the ldentification of Piping Systems.
ASME A13.1 is intended to establish a common system to assist in identification 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 pub- tic 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 if
(a) such schemes are described in writing
(b) employees arc 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.
(15) 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 service conditions, to fluids defined for other purposes as flarnmabk or ccrnz&ust lb/c.
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.
3METHOD OF IDENTIFICATION3.1 Legend
This Standard considers a legend to be primary andexplicit for identification of contents. Positive identifica-tion of the contents of a piping system shall be by letteredlegend,giving the name of the contents in full or abbrevi-ated form (see Table 1).Arrows shall be used to indicatedirection of flow.Where flow can be in both directions,arrows in both directions shall be displayed.Contentsshall be identified by a legend with sufficient additionaldetails such as temperature, pressure, etc., as are neces-sary to identify the hazard.
Legends shall be brief, informative, pointed, and sim-ple for greatest effectiveness.Legends shall be appliedclose to valves or flanges and adjacent to changes indirection, branches, and where pipes pass through wallsor floors; and at intervals on straight pipe runs sufficientfor identification. Identification may be accomplishedby stenciling, the use of tape, or markers. In any situa-tion, the number and location of identification markersshall be based on the particular piping system.