Contract for the Supply and Installation of an Ammonia Storage and Vaporisation Unit to the University of Birmingham

An initial FEED study for the ammonia storage and vaporisation unit has been commissioned from STAR technical solutions and the design is set out in the series of accompanying documents:

• 136800-001B.Ammonia P&ID.pdf

[Ammonia plant P&ID document]

• 136800-002A.Equipment Layout.pdf

[pdf of Equipment layout]

• 136800-002A.Equipment Layout.dwg

[drawing file of Equipment layout]

• 136800-003A.Calulations.pdf

[Calculations used in the plant design]

• 136800-004B.Principles of

Operation.pdf [Description of how plant should operate]

• 136800-005A.Concept Design

Ammonia Hazard Assessment.pdf

• 136800-006A.Hazard and Operability Study.pdf
• HAZOP Drawing.pdf
• HAZOP Keywords.pdf
• Hsg71 - Chemical Warehousing.pdf

The tender should comply with the specification as set out in these documents. All documents should be considered in detail as part of the tendering process.

The design of the ammonia storage and vaporisation unit base is to deliver ammonia at:

• 70kg/hr
• 8.0 Barg
• ≥25oC

Further requirements/considerations include (see documents for details):

• Small quantities of water are contained in ammonia when supplied by BOC. When transferring ammonia liquid from the drum tanks, water is also transferred. This added water must not affect the operation of the vaporiser. A system to separate the

water from liquid ammonia must be included. The separated water must have a system to allow it to be decanted safely.

• The facility may require the ammonia delivery pressure to be reduced or increased. The design must be capable of supplying ammonia vapour at stable pressures between 6 to 10 Barg.
• The drum tank weight must be measured in position to know if the drum tanks are ready to be swapped out.
• Under no circumstance, the equipment operation will result in any back filling of the BOC drum tanks with liquid ammonia resulting in overcharging the drum tanks.
• The safety systems that must be included are those detailed in BS EN378 Part 1 to 4 and any standards referenced. Ammonia is used in refrigeration systems and all the safety requirements within these standards apply to this project.
• The adding of ammonia to the system must be simple; no venting of liquid when removing hoses and any vapour must be vented through water in a controlled manner.