Logbooks Lab Maintenance Evaporator_1 Evaporator_2 Laser cutter Target Production Test-Stand RH-ISAC RH-Cyclotron RH-Meson Hall RH-Beamlines RH-ARIEL
  RH-ISAC  Not logged in ELOG logo
Message ID: 2790     Entry time: Friday, April 11, 2025, 13:46
Author: chad fisher 
Category: North Hot-Cell 
Type: Repair 
Module:  
Target/Number:  
Subject: Remote end 9**4 repair 

Tong cable on remote arm 9**4 has be relocated onto its pulleys and tong opening adjusted at the tong cable drum by changing the position of the tong cable screws by two positions (tightened/closed) such that the air tool will fit in the tong and some of the slack in the tong system has been taking up.

An attempt was made to also adjust the elevation twist pulley block which would also aid in taking up slack in the tong system however, the elevation twist pulley block was already and the end of its adjustment. Elevation twist cables are measuring 10 in lbs, the nominal value that they should be at is 15.

Tong system has been cycled multiple times and the tong cable itself looks good. This arm should be good for service however, I recommend a new pulley block be ordered and the new one dimensional compared to the existing. If they are the same we may consider shortening the new pulley block to achieve a window for tensioning, after which I would recommend the pulley blocks be swapped...swapping should only take place after 9342 has had the tong cable replaced and we can be more confident in its operational state, or in the 2026 shutdown in allowed.

ELOG V2.9.2-2455