Railway Ohe Material: Ri Code List __link__
| Segment | Length | Meaning | Example | |---------|--------|---------|---------| | XX | 2 | Major component group | CN (Conductor), IN (Insulator) | | YY | 2 | Sub-type / material | CU (Copper), CM (Composite) | | ZZZ | 3 | Serial number / variant | 010 |
Not exactly. Metros (Delhi, Mumbai Metro) use slightly modified codes, but 90% are common with Mainline RI codes for 25kV OHE.
Most codes start with "RI" followed by a 4-digit number (e.g., RI 2021). Standardization:
| Description | RI Code | Material | | :--- | :--- | :--- | | Regulating Tube (2.5m length) | RI-4-RT-22-01 | Galvanized Steel | | Cantilever Assembly (Heavy duty) | RI-4-CA-09-02 | 25kN capacity | | Dropper Clip (Stepless) | RI-4-DC-33-04 | Brass / Gunmetal | | Steady Arm (Complete set) | RI-4-SA-17-01 | For 25kV OHE | | Tube Clamp (For 34mm tube) | RI-4-TC-45-01 | Malleable iron | railway ohe material ri code list
This guide explains the RI (Reliable Index) Code system used by Indian Railways for Over Head Equipment (OHE) materials
Indian Railways publishes a master schedule (usually Appendix T-36 or similar) that cross-references old part numbers with new RI codes.
Typically, an item code in the Railway Stores classification follows a pattern like . | Segment | Length | Meaning | Example
In the Railway Stores Code, materials are often grouped by their nature:
No valid RI Code = No procurement. No procurement = No electrification.
A common point of confusion for newcomers is the difference between an RI Code and a Drawing Number (Drg. No). Standardization: | Description | RI Code | Material
Let us look at how specific OHE materials are categorized within the RI system. Note: The specific 11-digit or 8-digit codes vary by zone and board update, but the classification headers remain consistent.
| RI Code | Description | Unit | Mechanical load (kN) | |---------|-------------|------|----------------------| | IN-PO-101 | Porcelain pin insulator, 25 kV, 160 kN | piece | 160 | | IN-PO-102 | Porcelain post insulator (horizontal), 25 kV | piece | 120 | | IN-CM-201 | Composite long rod insulator, 25 kV, 210 kN | piece | 210 | | IN-CM-202 | Composite anti-fog insulator, 25 kV | piece | 160 |