ILW-Type B-4049-4050-4051-4052-3m3 SAFSTORE-M-NOV14


Design No: 4049/4050/4051/4052
Cavity: 3.1m3 (nominal) with 100mm iron shielding

Contents: Solids, ILW
Categories: , , .

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Package Type

Designed as a self shielded storage and disposal container for Type B quantities of Intermediate Level Waste (ILW).


To be transported within a Type B Transport overpack.

The 3m3 SAFSTORE-M design has been awarded a Conceptual stage Letter of Compliance (cLoC) by Radioactive Waste Management Ltd (RWM).


The 3m3 SAFSTORE-M is designed as a robust shielded container for storage and disposal of Intermediate Level Waste (ILW). Manufactured from ductile cast iron (DCI), the container structure provides both shielding and enhanced package performance with minimum reliance contribution from the wasteform.

The 3m3 SAFSTORE-M is designed to be compatible with the container only aspects and weight limits specified within the RWM Waste Package Specification WPS/340/01 for the Miscellaneous Beta Gamma Waste Store box. It is designed to accommodate ILW that is intended for disposal within a geological disposal facility (GDF) without the need for any further packaging or treatment. It is also designed to meet RWM disposability requirements after an extended period of on-site storage. A process port is provided for any post-packaging conditioning of contents (optionally further ports can be provided if required).

For transport to a GDF it is intended to overpack the 3m3 SAFSTORE-M within a Type B transport container such as the RWM Standard Waste Transport Container (SWTC). Currently the large cavity SWTC-150 will accommodate waste packages with external dimensions of the 3m3 SAFSTORE-M.

The 3m3 SAFSTORE-M can be supplied in a range of shielding wall thicknesses; allowing optimisation against cavity volume and mass for different activity contents.  Internal volume and empty weights are given for shielding thicknesses of 100mm and 200mm (other thicknesses can be provided on request).

The 3m3 SAFSTORE-M can be supplied with a single lid or a double lid (would meet IP-2 packaging standard).

Illustration of Package 3m3 SAFSTORE M (100mm wall)

 Illustration of Package 3m3 SAFSTORE M (100mm wall)


  • Opening can be rectangular or circular
  • Closure via a ductile cast iron shield lid with bolted closure
  • Filtered vent to allow gas release but prevent particulate escape
  • A process port is provided on the shield lid

Approved Contents

A wide range of solid ILW materials (including unconditioned wastes) can be accommodated.  Various wall thicknesses of the ductile cast iron are provided to allow shielding to be optimised against maximising cavity volume for different activity contents and optimising filled mass.

Modes of Transport

By road, rail or sea.

 Physical Data

Single Lid

3m3 SAFSTORE-M-100

Design No 4049

3m3 SAFSTORE-M-200

Design No 4050

Double Lid

3m3 SAFSTORE-M-100-D

Design No 4051

3m3 SAFSTORE-M-200-D

Design No 4052

Shield Wall Thickness (mm) 100 200

External Dimensions

(W x D x H) (mm)

1,850 x 1,850 x 1,370 1,850 x 1,850 x 1,370
Internal Volume (m3) 3.1 1.4
Weight Empty (tonne) 10 16
Lifting Method Twistlock features on top located at corners

All dimensions and weights are nominal values

(RSC-4049-4050-4051-4052-3m3 SAFSTORE-M-OCT15)