Temporary chilled-water lines keep progress flowing

Temporary chilled water pipes are now installed between NML and the Cryomodule Test Facility building. Photo: Jerry Leibfritz, AD

A creative solution was recently implemented at the NML SRF test facility complex to keep multiple projects moving forward.

Continued progress on the construction of the PXIE accelerator, located in the Cryomodule Test Facility, will soon require the use of low-conductivity cooling water. Since the completion of the permanent low-conductivity water system for CMTF is still more than a year away, the Accelerator Division had a plan to reuse a portable low-conductivity water skid, or movable system, for PXIE’s initial commissioning. However, using this skid would require the purchase of a new chiller at a cost of approximately $200,000, and scientists would use it only for roughly one year.

To save money, the Accelerator Division proposed a creative solution to use the excess capacity from the existing large chiller located in the NML building next door to CMTF. This required installing more than 600 feet of PVC piping through the NML building, outside across the field and drainage culvert between the two buildings, and into the CMTF building. A couple of the NML SRF technicians developed a plan and installed the piping for a fraction of the cost of procuring a new chiller.

This solution proved to be a good decision in another important way. During the commissioning of the new CMTF cryogenic plant, there was a need for additional chilled water. AD technicians, who installed the original piping, devised a plan to tap into the newly installed PVC chilled-water piping and run a branch line to the CMTF compressor building. They completed the installation work over a weekend and were able to get the system fully operational in a little over a week.

Jerry Leibfritz

The white water pipes run from NML to the Cryomodule Test Facility, and the black pipes run to the cryoplant compressor building (through the brown building wall). Photo: Jerry Leibfritz, AD