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Status : Active
Standard Type : Main
Document No : API RP 1637 (Standard + Revision Tracker) : 2025
Document Year : 2025
Pages : 44
Section Volume : Marketing (05)
API RP 1637 (Standard + Revision Tracker) : 2025
This recommended practice (RP) describes a system for marking equipment used to store and handle bulk petroleum, alcohol-blended petroleum and biodiesel products. The equipment marking color-symbol system described in this RP facilitates easy identification of products by means of colors, symbols and alphanumeric designations. The principal purpose of this marking system is to identify product transfer points for tank-truck loading and unloading at distribution terminals and retail outlets to prevent errors in product handling.
The marking system described in this RP does not cover aviation fuels.