Jefferson Lab Weekly Briefs August 31, 2016
Jefferson Lab Weekly Briefs
August 31, 2016
Jefferson Lab Published Journal Articles, Aug. 22-26
Publications Refresher Course Set for Sept. 23
Pick Up a Free Book or Magazine!
Clean Up Your Work Space with Responsible Records Management
The Cryogenics group reconfigured both CEBAF accelerator linacs over to the Central Helium Liquefier-2 plant and shut down and warmed up the CHL-1 plant for the summer to support the following maintenance activities. In the CEBAF accelerator linacs, the group cleaned oil from the North Linac cooldown header that was deposited during the Hall D magnet quench a few years ago.
In the CHL-1, maintenance was performed on warm compressors C1, C2, C3, C4, C5, C6 and SBRC2; maintenance was also performed on the warm gas management control valves and the electrical distribution panels. The group also cleaned and serviced the main cold box diffusion pump and the SC1 cold box diffusion pump and replaced four failed temperature diodes in the main cold box. Also, a new recovery compressor skid C9 was fabricated, installed and commissioned; new power vacuum feedthroughs for SC1 CC1, CC2, CC3, CC4 and CC5 were fabricated and installed; and the group is nearing completion on the fabrication of the new guard vacuum system skid, with the installation and tie-in work to begin soon. Finally, Air Liquide and S2M are moving forward with repairs to the CC4 cold compressor.
In the CHL-2, maintenance work was performed on warm compressors C1, C2, C3, C4 and C5, and the variable frequency drives were upgraded on SC2 2 Kelvin cold box CC1, CC2, CC3, CC4 and CC5. Also, the new C6 warm compressor was received from PHPK.
In the Cryogenic Test Facility under the Utilities Infrastructure Modernization project, the new building addition was finished on the CTF plant building 57. The controls upgrade is underway to replace the CAMAC (Computer Automated Measure and Control) system with PLCs (Programmable Logic Controls). The new 4.5 Kelvin cold box was received from Linde, and the group is moving forward with installation. Also, maintenance was performed on all three expansion engines for cold box 2 and on the electrical distribution panels.
Also, the group completed and shipped the remaining three transfer line sections to Michigan State University. Finally, since the End Station Refrigerator plant continued running during the summer to support the halls, no maintenance was performed.
Environment, Safety, Health and Quality
At Jefferson Lab, engineering controls are often used to reduce eye injuries; however, appropriate personal protective equipment, such as goggles and safety glasses, must also be used whenever an eye hazard exists. When you need to use eye protection, choose appropriate equipment for a given task by conducting a Task Hazard Analysis or reviewing an existing analysis specific to the planned activity. And, remember, your choice of eye protection should not only be specific to your work situation, it should also take into account your personal vision needs.
NIOSH offers a handy, printable eye protection checklist for reference. For more information about the types of personal protective equipment used at Jefferson Lab, see ES&H Manual Chapter 6620 Appendix T2 Types, Description, and Use of Personal Protective Equipment (PPE).
Computing and Networking Infrastructure
Web Traffic Protections Begin Wednesday, Sept. 7
Hall B (SAF111) Safety Awareness Training Will Be Updated Sept. 1
Tornado Warning Siren Test Set for 10:30 a.m. on Friday, Sept. 2
Jefferson Lab Calendar of Events
|JLab Weekly Briefs is an ongoing publication providing information on the status of safety, accelerator operations, experiments, free-electron laser, reviews, upcoming activities and special events. Deadline for submission is every Tuesday by 10 a.m. Submit new items to: Public Affairs or contact Kandice Carter at x7263.|