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1 Introduction

This specification describes objective demands to the supplier for construction, production, control and deliveries of wooden sleepers in accordance with the Bane NOR requirements and expectations.

2 Scope

This specification is applicable to supplies of wooden sleepers for normal track, turnouts and bridges to Bane NOR. This specification deals with sleepers made from Beech or European oak.

3 Forms, dimensions and tolerances

Sleepers and bearers shal have a nominally rectangular cross section as shown in Figur 1

Figur 1: Cross section

Tabell 1 shows the dimensions of the sleepers

Tabell 1: Dimensions

Sleeper Dimensions (mm)
Length l (width) e (height) r (min. cutting surface) d (min. cutting surface)
Normal sleeper 2500 240 140 70 160
30 tonn sleeper 2600 260 160 80 160
Turnout bearer 2300 - 7500 240 140 80 200
Bridge bearer 2500 - 5000 230 230 227 227
Bridge bearer 2500 - 5000 230 180 227 227

Tolerances given in EN 13145 shall apply to all sleepers and bearers ready for preservation and use.

4 Defects and quality features

All sleepers and bearers shall comply with the requirements given in EN 13145, chapter 6.

5 Durability and preservation

All sleepers and bearers shall comply with the requirements given in EN 13145, chapter 7 and the requirements for Maximum density before impregnation and Preservative below:

5.1 Maximum density before impregnation

Prior to impregnation the wood species shall not exceed the following density:

  • Beech:800 kg/m3
  • Oak:900 kg/m3

5.2 Preservative

  • Sleepers shall be impregnated with "SleeperProtect" oil.
  • All active substances in the preservative shall be approved for use according to EU Regulation No 528/2012 (Biocidal Product Regulation)

5.2.1 Impregnation process parameters for Oak sleepers

  • Oak sleepers shall be treated with "Sleeper protect" oil in a Vacuum-Pressure process according to Tabell 2

Tabell 2: Process parameters for Oak sleepers
Process step Pressure (bar) Time (minutes)
Vacuum - 0,8 60
Pressure 8,0 100
Post vacuum -0,8 180

5.2.2 Impregnation process parameters for Beech sleepers

  • Beech sleepers shall be treated initially with a water based Cu-preservative before "Sleeper Protect" treatment
  • Beech sleepers shall be treated with "Sleeper protect" oil in a Rüping process according to Tabell 3.
  • Density shall not exceed 950 kg/m3 when Rüping process is applied.

Tabell 3: Process parameters for Beech sleepers
Process step Pressure (bar) Time (minutes)
Pre Pressure 3 20
Pressure 8,0 100
Post vacuum -0,8 180

6 Fastenings

6.1 Normal sleeper

  • Sleepers for normal track shall be delivered with baseplate SK 3131 for Pandrol e-clip rail fastening installed.
  • The baseplate shall be delivered from Pandrol Ltd, or from a supplier holding a valid Pandrol Ltd licence for manufacturing the baseplate.
  • The baseplates shall be installed with sleeper screws SK 1086 and spring washers Fe6/Fn6
  • The baseplates shall be positioned and installed to result in a track gauge of 1437 mm with tolerance +/- 2 mm

6.2 30 ton sleeper

  • Sleepers for 30 ton axle load shall be delivered with complete Pandrol Fastclip FC rail fastening mounted in accordance with Pandrol drawing 13833:
    • Baseplate SK 3049
    • Pandrol FC 1501 clips with toe insulators
    • Pandrol PU 10mm rail pad
  • The baseplate, clips and rail pad shall be delivered from Pandrol Ltd, or from a supplier holding a valid Pandrol Ltd licence for manufacturing the components.
  • The baseplates shall be installed with sleeper screws SK 1086 and spring washers Fe6/Fn6
  • The baseplates shall be positioned and installed to result in a track gauge of 1437 mm with tolerance +/- 2 mm

7 Factory production control

The factory production control shall comply with the requirements given in EN 13145, chapter 8.

8 Customer inspection

  • The supplier shall inform Bane NOR when the sleepers ready for customer inspection.
  • The sleepers shall be stored on the cutting edge to allow customer inspection of each sleeper, ref. Figur 2.
  • The distance between the stored sleepers shall be minimum 10 cm and the distance between each row shall be minimum 1 meter.
Figur 2: Sleeper storing
  • The turnout bearers shall be stored even in horizontal rows and shall be marked with its lengths.
  • The turnout and bridge bearers shall be stored separated, and the turnout bearers in different lengths.
  • Bane NOR control and sorting of sleepers are binding for both parties (Bane NOR and Supplier).
  • Bane NOR has the right to refuse receipt of produced sleepers at his own discretion.

9 Marking

Sleepers and bearers shall be marked according to EN 13145, chapter 9.

10 Transportation

The loading and transportation shall be effected in a way not damaging the sleepers. Loading and transportation shall be effected according to agreement with the Bane NOR.

11 Reference document

  • EN 13145 Railway applications – Track – Wood sleepers and bearers
  • EU Regulation No 528/2012 (Biocidal Product Regulation)

12 Compliance list

13 Change log