Substation L1/ MCC L1 Update #2 July 27,2012

Status of Procurement  Substation  All approval drawings submitted  Testing is expected to take place August 8-10  Delivery will occur soon after testing is completed  MCC  All approval drawings submitted  Expected arrival date of Mid to Late August (55-75 working days after approval drawings reach factory floor)  Drawings approved on 5/30/2012  Cable  All cable delivered  Stored in LINAC  350 MCM will be stored at warehouse until installation is closer  Panelboard  Delivered  Needs to be assembled

Status of Procurement (Cont.)  Safety Switches  Delivered  Stored in LINAC  Cable Supports  Delivered  Stored in LINAC  Support Structures  Will be built out of unistrut  Assembly has not yet begun  Support frames will be built in house  Junction Box  Drawing is complete  Fabrication companies have yet to respond  Since only one needs to be ordered it is unlikely that a company will construct this enclosure  Will be submitting the drawing to the machine shop soon

Project Schedule  Currently at a stand still  Complexity  Safety issues  Install should still be okay for originally planned September install  General Cleanup 2-3 weeks prior to shutdown of substation  Temporary electrical power will be setup the weekend prior  It could take riggers several days to remove and install substations  Small clearances  Large weights  May be several more days if given okay to shore the floor

Issues  Substantial Weight Increase  10,500 lbs. vs. 17,700 lbs.  Gallery floor has a very low load limit (350 lbs./sq. ft.)  This could effect everyday operations  Fork lifts, Tour groups, Removing equipment from downstairs  Could be wrong  Stevenson has no suitable indoor crane  Ceiling height is too low for carrydeck crane  55,000 lbs.  Shoring the floor may not be a possibility  Much of the transformer will need to be dismantled  Secondary bus bars, frame, sheet metal  Increases electrician time

Suggestions  FESS has been notified that it needs to begin looking into ways to fix this issue  Cut a hole in the ceiling  Has been done at other sites around the lab  Install outside  Requires Federal to make outdoor gear  Engineering Expense  Siemens subcontract issue  Expensive cable runs  Rigging job would be simplified  Aesthetics committee

Temporary Power Plan  “Siphon” power from panel DHP-L2-2 Circuit #1  Cable will be run on temporary supports  4 conductor 350 mcm cable is heavy (~7 lbs./ft.) and will need an open area to lay  Some cable will be put on the floor but will be covered by a cable bridge  Setup 2 temporary panel board(s)  Run cable to individual loads  DHP panels, MCC loads  DHP panels will be locked out and tagged out  Group lockbox  MCC loads will have configuration control locks  We will check current prior to using any MCC loads to ensure they will not trip off during operation  Power will be provided 24 hours a day

Installation Costs  1 Crew of Riggers (4-6 men)  Unknown Cost  Will remain unknown until a plan is put in place by FESS  2 Week of Electricians  $100/manhour x 2 electricians x 80 hours = $16,000  Cable  2/0 - $3,500  2 – $3,700  House Power  $4,200 for panelboard  $2,000 for assembly  Miscellaneous Stock purchases  $2,100 Total Cost : $31,500 -> excluding rigging Previous Estimate: $23,000 -> excluding rigging Increase can be attributed to increased electrician time and panelboard cost

Commissioning  Visual Inspection  Hi-Pot  Disconnect panel boards from temporary power  Reconnect panel boards  DHP-L1-1 will be turned on first  Fire alarms  Lighting  Etc.  DHP-L1-2  DHP-L1-3

What Will Become of the Removed Equipment?  Transformer will be kept as a spare  Currently have 1 spare for 8 transformers (5 – high rise, 3 – LINAC)  Transformer will be examined to make sure it is in good working order  Will be stored in Booster parking lot  Will be placed on a truck the same day it is removed to avoid excess rigger fees  Breakers  Will be rebuilt and tested  Used as spares  Primary Switch  Will be rebuilt and tested  Used as a spare

Future  Create Site Wide Monitoring Network PIP Project Not PIP PIP Project ???? Note: CG-1 has been moved from PIP schedule, and will now be handled by headquarters

Booster Y-BE2 Update  What we did  Current measurements  Voltage measurements  Thermal imaging scans  Listened  Disconnected all loads Y-BW2 Y-BE2  What we will do  Move Spare to F0  All tests that are performed on new transformers will be performed on spare  Oil samples  Order new substation