Spectac Designs and Installs Mobile Surge Vessel for Norbrook

Spectac International and veterinary pharmaceutical company, Norbrook, have a long-standing working relationship which spans several years. Established in 1969 by the late Lord Ballyedmond, Norbrook is one of the largest privately owned veterinary pharmaceutical companies in the world. Most recently, the company required a mobile surge vessel which was designed and manufactured by Spectac. Our highly skilled fabricators take pride in delivering such an interesting project.

This case study has been prepared by our Senior Engineer – Stefan Murray.

Client Requirements

Norbrook’s requirements were as follows:

  • 6 Bar Design Pressure for the Internal Vessel
  • 10 Bar Design Pressure for the Oil Jacket
  • Full Vacuum in both areas
  • Oil Jacket to be fully contained and heated using an internal heating element
  • Agitator, Motor & Gear Box
  • Sight Glass & Light
  • Portable on Castors
  • Minimum 0.5 Ra Electro Polished
  • Hygienic bottom outlet valve
  • X Ray Non-Destructive Testing

Our Solution

Our engineering team have the necessary expertise and skills to deliver the very best solutions to meet Norbrook’s needs. We work to the following codes of practice for the pharmaceutical industry – ASME Boiler and Pressure Vessels Code Section VIII Division 1. Before the surge vessel could be fabricated, pressure calculations had to be completed to ensure the correct material thicknesses are used throughout the vessel. These calculations were then analysed by third party group – TUV. Once this process was completed, Spectac were then able to provide state of the art 3D Solid Works drawings specifically catered to the client’s unique requirements. Once these drawings reviewed and finalised, production could commence. For hygienic purposes, all product contact areas must be 316/316L stainless-steel with a minimum surface roughness of 0.5Ra. Certification of all materials is provided to the client which gives them absolute peace of mind. Due to the high pressure on this vessel only the most skilled coded TIG welders worked on this project. This ensured a high-quality weld which was then tested using X-ray scanning and Dye Pen testing.

Testing & Approval

Upon completion of the vessel, Spectac hosted a factory acceptance test with Norbrook to ensure they were totally happy with the final product. This gave the client the opportunity to request any changes before the vessel is delivered to their production site. In this circumstance Spectac were able to provide Riboflavin testing to ensure that the two rotating spray balls would sufficiently clean the vessel.


Spectac International pressure tanks are designed to meet any specifications that you require for your business. Find out more about the range of pressure vessels we offer here.

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