COVERAGE
This check list applies to the Central Helium Liquifier (CHL- building 8), Trailer 10, the End Station Refrigerator (ESR - building 102), the Cryogenic Test Facility (CTF - building 57), and Cryogenic Service Building (building 98).

YEAR-ROUND READINESS
Maintain a weather-alert radio in the CHL Control Room, and keep Cryogenic Group Leader advised of declared watches, warnings, and special announcements.

NOTE
The CHL will be kept on line until electrical power is lost. If power is not restored within twelve (12) hours, special U-tubes must be installed to move gaseous helium from the 2K load through the shield. If limited electrical power is restored, but is insufficient to drive the Howden compressors, the recovery compressors will be energized. Then gaseous helium will be pumped into the gas storage tanks. If electrical power is not restored within twelve hours, we will be forced to vent helium to the atmosphere. The ESR will also be kept on line until electrical power is lost.

READINESS CONDITION 3 (RC3) - BEGINNING OF HURRICANE SEASON (JUNE 1)

1. Review/update this Hurricane Check list

2. Check tie downs for the following:
   • Trailer 10 and any other trailers in the custody of Cryogenics Group
     
   • Transportainers
     
   • Gas storage tanks
     
   • Dewars
     
   • End Station transfer line

3. Review list of essential staff and update if necessary.

READINESS CONDITION 2 (RC2)

1. Evaluate all contract work in progress or about to start and take appropriate action.

2. Inspect the following for structural integrity and water-tightness and take appropriate action: CHL, CTF, ESR, Building 98, and Trailer 10.

3. Review the gaseous helium and liquid nitrogen inventories, and order as necessary.

4. Notify essential staff, if any, and give direction to them.

5. Keep all members of the Cryogenics Group informed of the status of preparations for the hurricane.

READINESS CONDITION 1 (RC1), WIND CONDITION I

1. Move expensive equipment and vital records from trailers and transportainers to a safer location. If Group assets for storage are inadequate, contact the Accelerator Site Safety Warden.

2. Inspect outdoor areas and tidy up as feasible. Move designated items indoors. Tie down other items which are loose and could become hazards in a strong wind.

3. After advising the Test Lab Building Manager, secure the CTF.

4. Ensure important computer records are backed up.

5. Comply with instructions issued by management to secure personal office computers, telephones, and offices prior to departure.

6. Keep the on-duty Crew Chief and the Gate House Guard informed of your intentions and plans.

For WIND CONDITION II, add:

1. Review contents of trailers and transportainers and take available action. Do not expect these structures to survive.

DOWNGRADING READINESS CONDITIONS (Changing from RC1 to RC3)

1. When management says that it is safe to allow occupants to return to their offices and work spaces, inform all about restoring their offices and equipment to normal.

   A. If the hurricane has not caused damage at CEBAF, return cryogenic systems and structures to normal as soon as possible.

   B. If the hurricane has caused damage at CEBAF, and when declared safe by Plant Engineering, inspect cryogenic structures, both exterior and interior, for damage. Document problems. Initiate repairs and replacements as appropriate.

2. If the experience of preparing for this storm presented opportunities to improve the check list, initiate a change.

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