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Entry  Mon Jun 8 15:26:10 2020, aaron, Notes, Safety, Plan for reopened Cryo lab activities 
    Reply  Tue Jun 9 13:58:55 2020, aaron, Notes, Safety, Plan for reopened Cryo lab activities Caltech_HVAC_System_Standards_Infomation.pdfResearcher_Back-to-Lab_Checklist.docx.pdfPI_Return_to_Work_Lab_Planning_Guidance.docx.pdf
       Reply  Tue Jun 9 14:19:46 2020, aaron, Notes, Safety, Template for logging lab entry / exit COVID-19_Glove_Usage_Guidance.docx.pdfWork_Station_Sanitation_Protocol.docx.pdf
          Reply  Thu Jul 16 12:09:18 2020, aaron, Notes, Safety, Template for logging lab entry / exit 
Message ID: 2533     Entry time: Tue Jun 9 13:58:55 2020     In reply to: 2532     Reply to this: 2534
Author: aaron 
Type: Notes 
Category: Safety 
Subject: Plan for reopened Cryo lab activities 

Developing reopening plans

According to the plan for reconstituting lab activities in PMA, labs should plan with the following in mind. Open questions for cryo are in bold.

  • All work that can be done remotely should be done remotely.
  • Limit the total number of people with lab access, and the density of people at any time.
    • Establish designated individual work areas separated by ~10ft, depending on duration and type of activity. Use clear floor markings to delineate individual areas.
    • Establish traffic patterns (on-way aisles) to minimize contact.
    • How many people will be working In the lab? One is a natural start.
  • Establish shifts to minimize density, and break research groups into cohorts that have minimal overlap with each other.
    • Eg, 4 days in lab 10 days out; 3 days in 4 days out in two groups
    • Also, how will shared lab spaces like the electronics shop be used and scheduled?
  • Establish cleaning and disinfecting practices
    • High touch surfaces:
      • Doorknobs -- disinfect on entry and exit
      • tool boxes -- can we move to individual carts of tools?
      • Computers (keyboard, mouse) -- disinfect on entry and exit
      • Optics tables -- can we divide tables into individual zones, or give individuals their own table?
      • Chairs -- disinfect on entry and exit
      • Light switches -- disinfect on entry and exit
    • Disinfection strategy:
      • Cleaning with 70% iso (no higher or lower) from a spray (not squirt) bottle
  • Establish a plan for ordering and receiving supplies
    • One option could be to 'quarantine' deliveries in our personal, unused offices before bringing to lab. Cardboard boxes should never be brought to lab anyway.
  • Reassess lab safety hazards to address both COVID and effects of reduced numbers of people in labs
    • Maintain a log of all people in the lab (check-in and check-out). This can be done on the elog, I'll post a template elog entry shortly.
    • Require use of face coverings / masks, gloves, goggles, lab coat. We usually don't require lab coat in lab when not working on optics, but we should launder and use the lab coats on reopening. PPE should not be shared, and we already have plastic bins for individuals to store PPE between uses.
    • Require frequent handwashing and sanitation
    • Notify the safety office when a risky experiment is scheduled, and alert other lab members when working alone in the lab. (Eg, when venting an experiment, especially that contains HV).
    • Address safety hazard of unattended experiments. 
  • Establish a research continuity plan, including critical functions, communication plan, and data backup strategy. We have existing backups of things like our software and data which should be revisited.
  • Develop a communication plan. All lab activity should be documented on the elog, as always.
  • Identify a lab safety officer. This might be done at the LIGO-X level, rather than the cryo lab level?
  • Certify that the HVAC system complies with the standards attached (1). The cryo lab HEPA filter is currently leaky, needs repair.
  • Follow the back-to-lab checklist (attachment 2) for procedures on 'starting up' the lab again, including initial safety checks.
  • Additional guidance for developing plans for return to work is in attachment 3.

Back-to-Lab checklist

This section is an unpacking of attachment 2, with the specifics of the cryo lab in mind.

  1. Have a research group level 'back to work' plan developed. Have a schedule for starting up certain processes, equipment, etc, and avoid starting up alone (for safety). Take things slow.
  2. Perform a thorough walkthrough of the lab on first reentry, and note anything out of place, missing, damaged, leaking, etc. Record this In the elog, and make a plan for repair.
  3. Ensure the lab has adequate PPE for near-term use
  4. Ensure an adequate supply of hand soap, towels, 70% isopropyl, kim wipes, and other disinfecting equipment.
    1. We need to purchase a spray bottle, I don't know of one in cryo.
    2. We could designate the sole sink for hand washing, but may instead focus on hand sanitizer based washing and always wearing gloves in the lab. In any case, the sink should be flushed out until it doesn't run rusty on reopening.
  5. Complete an inventory of lab supplies
    1. I'll add that we should continue our campaign of reorganizing and labeling the cryo lab.
    2. Check levels of pressurized N2 (and liquid nitrogen, if needed).
    3. Discard expired chemicals, replenish supply of any depleted chemicals In addition to both high purity and low grade (70%) isopropyl.
    4. Replenish supply of PPE
    5. Supply of 1550nm optics, related optomechanics
    6. Inventory equipment used in old or unused experiments -- preserve experiments that are close to a functioning state, safely store experiments that are not
    7. Optics shelves
    8. Vacuum supply cabinet
    9. 'projects boxes' cabinet
    10. Toolbox
    11. Electronics racks
    12. Silicon sample and processing cabinet
  6. Verify all emergency equipment is accessible and functioning
    1. Eyewash station and safety shower in the hallways
    2. Sprinkler heads in lab
    3. Fire extinguisher
    4. Pull stations
  7. Check chemical and biological containers for damage, leaks, or pressure build up (we just have one flammables cabinet, and waste storage under the sink)
    1. Replace hazardous waste containers
    2. ensure compressed gas cylinders are chained and stored
    3. Maintain separation of non-compatible substances (oxidizers / flammables, acids / bases, etc)
    4. Review startup procedures for compressed gas cylinders
    5. Leak test compressed gas piping, especially going to floating optics benches
  8. Power up electrical equipment slowly and one at a time.
  9. Pour a small amount of water down dry traps and floor drains. Run all water faucets for a few minutes.
  10. Turn water back on slowly. Check water connections for leaks. Do not leave site right away, wait at least several minutes -- some connections may burst after few min. Immediately report all leaks.
  11. Check closed environments for accumulated condensation and/or mold.
  12. Check that utilities (house vacuum, H2, etc) are functioning.
  13. Equipment startup
    1. Review equipment manuals
    2. Verify "Laser in Use" lights, door interlocks, and other safety controls are functioning
    3. Verify heat sources do not have damaged cords. These include:
      1. 2x hot plates
      2. 1x variac heater, associated resistive straps
    4. Check vacuum equipment.
Attachment 1: Caltech_HVAC_System_Standards_Infomation.pdf  414 kB  Uploaded Tue Jun 9 16:09:38 2020  | Hide | Hide all
Attachment 2: Researcher_Back-to-Lab_Checklist.docx.pdf  545 kB  Uploaded Tue Jun 9 16:10:44 2020  | Hide | Hide all
Researcher_Back-to-Lab_Checklist.docx.pdf Researcher_Back-to-Lab_Checklist.docx.pdf Researcher_Back-to-Lab_Checklist.docx.pdf
Attachment 3: PI_Return_to_Work_Lab_Planning_Guidance.docx.pdf  505 kB  Uploaded Tue Jun 9 16:12:16 2020  | Hide | Hide all
PI_Return_to_Work_Lab_Planning_Guidance.docx.pdf PI_Return_to_Work_Lab_Planning_Guidance.docx.pdf
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