Engineering design services

Tender description

The scope of services is to design and build new or modify existing experimental rigs, plant and/or infrastructure in NNL facilities to provide facility improvements, extend plant life and support experimental rigs and processes. This may require design, engineering substantiation, manufacture/construction, and off-site testing of plant and equipment. Design may include concept design, preliminary (or scheme) design and detailed design, including design for manufacture. Design reviews will be held as appropriate and HAZOPs may be conducted. The successful bidders would be expected to support these activities. The design activities may require design quality plans and/or validation and verification plans to be produced. Design or design and manufacture of experimental rigs to go into non-nuclear facilities. Typical requirements may include: — small to medium scale processing plant e.g. pumps, reactors, mixers, heat exchangers, furnaces, filtration systems, gas scrubbers and driers, — pressure vessels to PD5500, ASME VIII or relevant EN standards, — piping for compressed gas distribution to ASME B31.3, — piping for transport of liquids, including corrosive substances to ASME B31.3, — mechanical handling equipment, — specialist machinery, including control/PLC systems, — interlocks and guarding for rigs. Design or design and manufacture of experimental rigs to go into nuclear facilities. Typical requirements as per lot 1 plus the following: — radiation shielding, — piping for transport of liquids, including radioactive substances, — HEPA gas filtration. Design or design and build or modification of: a) HVAC systems, including: — HEPA filtration, — fire dampers, balance dampers, — air-handling units, — extract fans and stacks, — environmental discharge monitoring (including radioactivity), — instrumentation and control (e.g. flow, temperature, pressure and humidity).