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Form Procedures

NPR 004 Using a Condition Affecting the Network (CAN) Form

This document describes how a Condition Affecting the Network form must be compiled, issued, cancelled, fulfilled and managed.

Version 6.0, 14 May 2023

Description

This document describes how a Condition Affecting the Network form must be compiled, issued, cancelled, fulfilled and managed.

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Introduction

NRF 004 Condition Affecting the Network (CAN) is used to record reports about conditions that can or do affect the safety of operations in the Network.

The CAN Form is also used by Signallers to give written warning to Drivers and Track Vehicle Operators as specified in the Network Rules.

Numbering forms

The Signallers issuing a CAN Form must number the form consecutively on a pad-by-pad basis.

Mandatory item

The following items must be completed:

1 CAN Number

Optional items

The following items are optional:

2 Report details

3 CAN block working

4 Active control level crossing

5 CAN restrain details

6 Special instructions and additional information

7 Issued by

8 Issued to

Review each item, and:

  • put a cross in the numbered box check box with cross if the item does not apply in this instance, or
  • tick the numbered box check box with tick if the item applies in this instance and complete the details.

Item 2 – Report details

If the item applies, tick the numbered box numbered box 2 with tick and record the details about the CAN report.

Item 3 – CAN block working

If the item applies, tick the numbered boxnumbered box 3 with tick and review each part of item 3.

Block Posts

If block post locations have not been established, put a cross in the check box check box with cross.

If block post locations have been established, tick the check box check box with tick and complete the details.

Warning signs

If warning signs have not been used, put a cross in the check box check box with cross.

If warning signs have been used, tick the check box check box with tick and complete the details.

Signals at STOP

If authorisation is not given to pass signals at STOP, put a cross in the check box check box with cross.

If permission is given to pass signals at STOP without further authorisation:

  • tick the check box check box with tick, and
  • detail the signals. The signals must not include signals used as a block post location, and
  • give full details of the first operating signal to be obeyed.

Item 4 – Active control level crossings

If the item applies, tick the numbered box numbered box 4 with tick and complete the details.

Item 5 – CAN restraint details

If the item applies, tick the numbered box numbered box 5 with tick and record the details about the CAN restraint requirements.

When the CAN restraint is ended, tick the check box check box with tick and complete the details.

Item 6 – Special Instructions and additional information

If the item applies, tick the numbered box numbered box 6 with tick and record information about special instructions or additional information, such as:

  • WOLO speed restrictions
  • other speed restrictions
  • location of Qualified Workers

the length and location of disabled rail traffic.

Item 7 – Issued by

If the item applies, tick the numbered box numbered box 7 with tick and complete the details.

Item 8 – Issued to

If the item applies, tick the numbered box numbered box 8 with tick and complete the details.

FIGURE 1: NRF 004 Condition Affecting the Network (CAN)