Tenders for the Supply, Build and Installation of one ATEX Oven

The Health & Safety Executive (HSE) invites Tenders for the Supply, Build and Installation of one ATEX Oven, at their Laboratory located at Harpur Hill, Buxton SK17 9JN, as part of the EAB EU Exit Project. The Science Division (SD) of the Health and Safety Executive has a requirement to conduct the testing of both known and unknown explosives and pyrotechnics which are required to be dried /Thermal conditioned / artificially aged to specific temperatures for set durations prior to completing any testing. SD is looking to procure and replace its current conditioning oven. The new oven must comply with current legislation and guidance for the use of equipment within an explosive atmosphere. The guidance below is not an exhaustive list; DTI's Equipment and Protective Systems for use in Potentially Explosives Atmospheres Regulations 1996 (As amended) (EPS) (SI 1996/192) ATEX Equipment Directive 94/9/EC Dangerous substances and Explosive Atmospheres ACOP L138 HSE/CBI Explosive Industry Group: Guidance for Electrical Installation and Equipment within Explosive Manufacturing and Storage Facilities including Fireworks Minimum Requirements: 1. Must be ATEX approved for use in category B Building; Zone 20 Category 1 Equipment with a T4 temperature rating. 2. Oven interior size must by 1 m x 1 m x 1 m 3. Must be capable of sustaining various set temperatures up to 135oC (max). 4. The inside oven temperature must be able to reach 105oC and maintain this temperature for a minimum of 30 days. 5. Must have an accuracy of set temperature for temperature inside of oven to be +/- 2oC (i.e. 75 +/- 2oC or 103 +/- 2oC) 6. The heating cabinet should be equipped with an inner ventilation system and continuous recording of temperature. 7. Heating cabinet must be jacketed and use thermal oil 8. Must have an additional thermostatic regulator that will override all other controls and limit the temperature to a safe level. This is required to be variable to set from 85oC to 135oC (once set this must be tamperproof) 9. The temperature safety cut-off's must not be self-re-setting. 10. Oven must have an indicator light to show when the heater is energised. 11. Electrical equipment should be safe to use with explosives 12. Must be able to add external thermocouples within the oven (Record oven temperature and temperature of an explosive article with external thermocouple attached). 13. Oven must be able to be programmable and be able to connect to either a network or standalone computer/recording system and be able to download/print the temperature traces of either the oven/articles being temperature cycle, preferably both.

It is a requirement that bidders have knowledge and experience of manufacturing ovens to ATEX in a Zone 20 Category 1 environment for Explosives, and also of Electrical Installation and Equipment within Explosive Manufacturing and Storage Facilities including Fireworks.

Additional information: All tender documents are available via the HSE In-Tend supplier e-procurement portal. All responses and requests for clarification must be submitted via the portal. Registration is free of charge and can be completed via the following link:

https://in-tendhost.co.uk/hse