All shadow shields have been installed. Ladders, the pothole covers and the second rad survey will be done tomorrow.

All cyclotron in tank work is completed.

Ex 2C has been removed from the cyclotron. A trip into the tank was needed to free the probe, hung up on the usual spot.

EX 2C has been installed back into the cyclotron.

The shield door on the B2 level of the RH building has been closed.

200, 400, 500, 600, and a pallet of 700 series of shield have been installed in the cyclotron.

 All cyclotron in tank work has been completed.

 The Blue Shield Door on the B2 level of the RH building has been closed.

 The shield door is now open on the RH B2 level.

The new EX4N housing assembly drawing TEC0071 (unfinished) was installed and connected to the EX4 tank side port flange over a 3 day period from Feb29 – Mar 2, 2016. This was a hands on installation spread amongst 5 people with the total accumulated dose was 2.97 mSv.  See W/P C2016-02-29-5
 

Attached are;

- Rad field survey map.
- Updated installation procedure (rev4) with additional notes/comments during the installation  Revisions in Red.  Competed steps in Green. 
- Photo of the EX4N housing assembly.

Recent photos, are on Dimo's S drive :S\dyosifov\Extraction 4\Photos 2016

 All 4 Under rail wheels serviced and cleaned. All Timken bearings repacked with grease. No defects in any bearing set. 4 spare Timken 02820 bearings in RH shop.

 Center post bearing on service bridge inspected, turned freely by hand and regreased with Molub-Alloy 777-1 ES

 Motor/Gearbox unit removed from carrier and fully inspected and serviced. Oil changed on May 29th using Mobil 600 W Super Cylinder Oil. No signs of wear in internal gears, recommend oil service roughly every 5 years after shutdown.

 Both outriggers were inspected and were found to be mechanically sound. No damage to components or hardware visible, will revisit with pre-inspection before shutdown period 2025.

 60 month service completed. Bearings for drive motor wheels regreased, Reducer repacked with Molub Alloy 777-1 ES, all mechanically sound. Recommended to swap out front right drive wheel in 5 years due to minimal deteoration.

 24 Month, 60 month service completed. Bearings for drive motor wheels regreased and observed to move freely without load. Reducers repacked with Molub Alloy 777-1 ES. Vertical ball screw mechanism inspected and bearing change postponed due to lack of major usage, recommend change within next 5 years or service. All mechanically sound.

  12, 24 and 60 month service completed. Bearings for drive motor wheels regreased and observed to move freely without load. Reducers repacked with Molub Alloy 777-1 ES. Vertical ball screw scissor mechanism inspected and all operations observed to be in sound mechanical condition.

 1,2 and 5 Year service completed. Vertical ball screws and chains inspected and regreased with Chemours Krytox EG 2000 suitable for vacuum and clean room situations. Mechanically sound, will do a once over before next shutdown period.

 Yearly, 2 Year and 5 Year service completed. All bearings on support frames turn freely and were regreased with Molub Alloy 777-1 ES. Reducer repacked as well. Reinspect pre shutdown and lubricate orbital drive chain before wiping off excess.

 Highfields 7A,7B post shutdown service complete. Oil change completed, new Mobil 600 W Super Cylinder oil added. Sample collected for RPG of used oil. Both found to be mechanically sound and stored in upper mezzanine.