Title: Understanding Information Within the Hazard Directory

The National Hazard Directory (NHD) is a vital tool, utilised by thousands of people across the rail industry. It is an essential database for organisations planning and delivering safe work and access to any part of the rail infrastructure.

The Hazard Directory gives long term hazards contained within the infrastructure and access point information.

It will not give short term hazard information such as catch-pit lids missing.

Depending on the system being used there are a variety of searches and reports that can be utilised containing hazard information.

Network Rail access information through the Safe System of Work Planning System and contractors access information via On-Trac.

Hazard Directory Information

[Image: Hazard Directory Information]

The Hazard Directory shows information in columns.

- SYSID - IS the unique system identification number
- ELR - Engineer's Line Reference Number
- START - Is the starting mileage of the hazard. The mileage is measured in miles and yards
- End - Is the End Mileage of the hazard
- ITEM CODE - This is the hazard code
- Description - Gives a description of the hazard.
- Name - Gives the name of the hazard
- Track - Gives the closest track to the hazard if known
- FREETEXT - Allows for additional information to be added about the hazard

Hazard Directory Information Continued

[Image: Hazard Directory Information]

The shows additional hazards including:

- Gradiant Greater than 1 in 50
- Restricted Clearance
- Red Zone Working Prohibited
- Restricted Clearance

[Image: Hazard Directory Information 2]

Hazard Codes

Description | Item Code
25Kv Overhead Electrification | HEO
Asbestos Hazard | EKB
Authorised Access Point | MA
Authorised Access Point - Pedestrian | MAP
Authorised Access Point - Road-Rail Machines | MAR
Authorised Access Point - Vehicle | MAV
Authorised Walking Route | HA

Please (Click) on the Icon's for more information.

If you would like to see the full list of Item Codes. Download the information in the Course Materials Tab.

Description | Item Code
Buried & Overhead Electric Cable | HXE
Buried Gas Pipe | HBG
Buried S&T Cable | HBS
No Refuges | HCR
COSS or IWA may not work alone | HWP
Restricted Sighting | HCF
Road Rail Noise | EKR