TENDER FOR THE BULK SUPPLY OF LIQUID CARBON DIOXIDE - UNIVERSITY OF BIRMINGHAM

The University has a requirement for basic food grade CO2 for a five year period to support the Birmingham Institute of Forest Research (BIFoR). This project is high profile and far reaching, exploring the long term effects of CO2 on forests. This project is based in the Staffordshire area and is led by the University of Birmingham. It is one of only two such projects currently running in the World, exploring the real long term impact of CO2 on forest ecology and health.

This high-profile research project has been commissioned by the University to develop a real understanding of the long-term impact of CO2 on mature forest; the findings will also be published as part of the argument on the long-term impacts of CO2.

To operate the project effectively and to ensure a high level of robustness in the findings of the research a minimum quantity of 4,000 tonnes per annum (a possible maximum use of 7,250 per year) from April 2017. Thus, a total projected requirement would range from 20,000 tonnes to 36,250 tonnes from April 2022 to April 2027. Variations in volume will be determined by a variety of local environmental conditions, namely, number of daylight hours, wind speeds and ambient temperature. The average consumption of liquid CO2 has been 4,391 ± 1,866 tons per year but there is considerable month to month variations, but historically, the highest demand is in April (~900 tons) and demand drops each subsequent month until October (~600 tons).

The delivery requirement would be most likely to be two deliveries per day. Deliveries will be required during the growing period lasting approximately from March to mid-November.

The experimental system became operational in spring 2016 and is designed to run for more than a decade until November 2026.

BIFoR Free-Air Carbon Dioxide Enrichment (FACE) CO2 storage and distribution delivery arrangements are detailed as follows;

a) CO2 will be delivered to site by tanker and transferred to insulated storage vessels. The storage vessels will be equipped with refrigeration and heating units to maintain a pressure of 1725kPa to ensure the CO2 is in the liquid phase irrespective of demand.

b) To ensure continuity of supply during the operation season the storage vessels will have a capacity of approximately 140 tons based on a weekly use of 190 tons through the growing season (nominally April - October inclusive).

c) Storage vessels will be maintained at 100+ tons at all times during the operating season. Storage levels below 100 tons should be considered the call off point for resupply.

d) It is important that a supplier will be able to guarantee supply security of the CO2 throughout the operation period from a majority single point source.

e) The need to secure supply from a single CO2 source (i.e. from fertiliser production or cement or brewing but not a mix of all three). This is important because the isotopic signature of the CO2 varies with the source it comes from. Please report the carbon-13 isotope ratio in your supply and provide details of how and when that isotopic signature might vary (e.g., as a result of change of natural gas feedstock). Additional information: Contract Value has been published at the FTS minimum £1 to encourage competition. 3 scenarios have been included with the Tender Documents Pricing Schedule.