May 5, 2004H.J. Krebs1 2004 LST Installation Readiness Review 2004 IR-2 Installation Schedule H.J. Krebs May 5, 2004

May 5, 2004 H.J. Krebs 1

2004 LST Installation Readiness Review

2004 IR-2 Installation Schedule

H.J. Krebs

May 5, 2004


2004 Installation• Scope of work is located on top & bottom

sextants– Remove 18 layers of RPCs– Install 6 layers of 7/8” thick brass absorber in

layers 5,7,9,11,13 & 15 – 11.5 tons/sextant– Install LST detectors in layers

1,2,3,4,6,8,10,12,14,16,17 & 18– An investigation will be performed at

commencement of this down to determine if the layer 19 RPC can be retained at some functioning level


2004 Installation• Schedules do not include any time for:

– PPS certification• In the past, this has been 4 days. Presently this is scheduled to begin at the

conclusion of the BaBar schedule – October 15.– Tours and photography sessions

• In 2002, we lost two days to this• If tours or photography sessions are important, they may occur between

midnight and 07:00 or on Sundays– Replacement of any LST detectors that have problems after installation– Any PEP work.– Any BaBar system work

• Assumed that this work will occur on Sundays• Drift Chamber crew may have access to DIRC tunnel at any time without

interference to LST work– Helicoil replacement

• Have had trouble with these in the past• Assume a problem with 1% of helicoils

– Means replacing two helicoils in 2004» Probably a few hours per helicoil replacement


Flux Return Steel


2004 Installation• Flux return steel

– Side gap plates• Have removed and reinstalled many times• Very confident in schedule for these tasks

– Center gap plates• Have never removed or installed before• Very confident in schedule for these tasks

– Corner plates• Have never removed or installed before• Schedule times for these tasks are an educated guess• Test removal of two corner block bolts in summer 2003

– Somewhat easy to remove– Bolt threads appear to be in excellent condition

• An unbolting/bolting sequence has been developed– Will track bolts for reinstallation into same location


2004 Installation• Flux Return Steel (cont’d)

– Flux bar• Have never removed or installed before• Requires tapping two holes in each flux bar in field• Schedule times for these tasks are an educated

guess

• Solenoid– External radial support arms

• Have never removed before

– Release magnet supports• Have never done this before


Solenoid Support Arms


2004 Installation• Alignment

– Steel position shall be monitored to assure that the barrel assembly is stable

• Survey targets added at strategic locations– i.e., on mid corner blocks to see if structure is becoming egg

shaped• Take periodic measurements

– At beginning for reference– After bolts are loosened on each corner plate– At the beginning of each day– At the beginning of second shift– At the end of each day– At end for final reference

• SLAC survey crew still reviewing what is practical here– Solenoid position

• At beginning for reference• After final connection and loading of supports to assure that

solenoid is located in original position


2004 Installation• RPC removal

– RPCs are “ripped” out• HV & gas line still connected on BWD end• Time may be lost cleaning the steel gaps of this debris

– Bottom RPCs must be ripped loose, then cut, then pulled, then cut, etc.

• Not enough space in Z to extract in one piece

– RPCs range in weight from approximately 150 pounds for layer 1 to 250 pounds for layer 18

– 3600 sq ft of RPCs will be removed– Cover FWD beamline and detector face for protection

• Make certain not to cover any survey monuments


2004 Installation• LST hookup & commissioning

– 5 days each for upper & lower layer 18– Continuous checkout for remaining layers during LST installation

process• 10 days lower sextant• 9 days upper sextant

• Where do items go during the installation process?– Flux return steel and bolts to IR-12– Platforms and walkways along service road to Building 611– Main shield wall blocks along the Loop Road– RPCs thrown out in the IR-2 parking lot

• Where do items come from during the installation process?– Steel handling fixtures from IR-12– Elevator platforms from IR-12– Brass absorber plates from IR-12– LST detectors from SLD Collider Hall– Electronics and gas system from SLD Collider Hall– IFR shield wall, structural supports, and earthquake supports from IR-12


2004 Installation• IFR background shield wall

– New installation – very crane intensive– Requires installation of anchors in south PEP

tunnel ceiling– Requires installation of structural supports

and earthquake supports


2004 Installation• Schedules are based on:

– Mechanical installation assumes two 8-hour shifts per day, six days per week – very taxing

– LST installation assumes one 10-hour shift per day, six days per week• Mechanical installation team will provide technical support as needed to LST

team during this period– Wireway installation, cabling and gas hookup will be performed on owl

shift– Installation schedules denote IFR/LST work only

• Work by other systems must be performed during owl shift or on Sundays• VESDA system

– For first two weeks, fire techs bring system off every morning (six days/wk) at 07:00

– Beginning third week, fire techs bring system off every afternoon at 15:00 (five days/wk) and Saturday morning at 07:00. Fire techs will respond immediately (15 minutes) to bring system down if needed during the day shift

– Fire department will bring system back on line at 23:00 six days/wk• Security

– There will be no parking allowed during the day shift by the IR-2 delivery area to minimize congestion


Hall Crew Actual Work Time (Two 8-hour Shifts)Days Actual Work Time

0.05 39 minutes

0.1 1 hour 18 minutes

0.15 1 hour 57 minutes

0.2 2 hours 36 minutes
















1 13 hours


2004 Installation ScheduleID Task Name Duration Start Finish Predecessors

209 SUMMER DOWN 2004 60.95 days Sun 8/1/04 Fri 10/15/04210 Summer Down Begins 0 days Sun 8/1/04 Sun 8/1/04

211 CONTROLLED ACCESS 2 days Sun 8/1/04 Mon 8/2/04

212 SURVEY WORK (Two 8-Hour Shifts) 2 days Sun 8/1/04 Mon 8/2/04213 Post Run Survey 2 days Sun 8/1/04 Mon 8/2/04 210

214 Permitted Access Begins 0 days Mon 8/2/04 Mon 8/2/04 213

215 BEGIN BABAR WORK - END DOORS CLOSED 3 days Sun 8/1/04 Tue 8/3/04216 IFR WORK (Day Shift) 0.45 days Tue 8/3/04 Tue 8/3/04217 Shut Off & Drain IFR Barrel Cooling System 0.15 days Tue 8/3/04 Tue 8/3/04 214

218 Verify LV Fuse Location to Sextants 4 & 1 0.05 days Tue 8/3/04 Tue 8/3/04 217

219 Turn OFF LV & HV 0.05 days Tue 8/3/04 Tue 8/3/04 218

220 Remove DAQ Cables from Sextant 4 to IFBs 0.1 days Tue 8/3/04 Tue 8/3/04 219

221 Clean Up Obsolete RPC Cables 0.1 days Tue 8/3/04 Tue 8/3/04 220

222 LST WORK (Day Shift) 0.3 days Sun 8/1/04 Sun 8/1/04223 Run Cables to FEE 3 and FEE 5 0.15 days Sun 8/1/04 Sun 8/1/04 210

224 Connect LST Cables from Sextant 4 0.15 days Sun 8/1/04 Sun 8/1/04 223

225 ELECTRICAL WORK 1 day Tue 8/3/04 Tue 8/3/04226 Move Electrical Power Outlet on Upper East Platform 1 day Tue 8/3/04 Tue 8/3/04 214

227 OPEN DETECTOR & REMOVE LOWER STEEL 13.95 days Sun 8/1/04 Mon 8/16/04228 HALL CREW WORK (Two 8-Hour Shifts) 4.2 days Sun 8/1/04 Thu 8/5/04229 Open IR-2 Curtain Wall 0.1 days Sun 8/1/04 Sun 8/1/04 210

230 Remove DIRC Cyl, Lead and BWD End plug 0.25 days Sun 8/1/04 Sun 8/1/04 229

231 Transport DIRC Cyl, Lead and BWD End Plug to IR-12 0.1 days Sun 8/1/04 Sun 8/1/04 230

232 Open FWD End Door - East 0.1 days Tue 8/3/04 Tue 8/3/04 231,221,224

233 Remove FWD Lwr East Gap Plate - Transport to IR-12 0.05 days Tue 8/3/04 Tue 8/3/04 232

234 Install EQ Brace - FWD Lwr East 0.15 days Tue 8/3/04 Tue 8/3/04 233

235 Insert Manlift 1 - FWD East 0.05 days Tue 8/3/04 Tue 8/3/04 234

236 Install EQ Brace - FWD Upr East 0.1 days Tue 8/3/04 Tue 8/3/04 235

237 Open Fwd End Door - West 0.1 days Tue 8/3/04 Tue 8/3/04 236

238 Remove FWD Lwr West Gap Plate - Transport to IR-12 0.05 days Wed 8/4/04 Wed 8/4/04 237

239 Install EQ Brace - FWD Lwr West 0.15 days Wed 8/4/04 Wed 8/4/04 238

240 Install EQ Brace - FWD Upr West 0.1 days Wed 8/4/04 Wed 8/4/04 239

241 Open BWD End Door - West 0.1 days Wed 8/4/04 Wed 8/4/04 240

242 Remove BWD Lwr West Gap Plate - Transport to IR-12 0.05 days Wed 8/4/04 Wed 8/4/04 241

243 Install EQ Brace - BWD Lwr West 0.15 days Wed 8/4/04 Wed 8/4/04 242

244 Insert Manlift 2 - BWD West 0.05 days Wed 8/4/04 Wed 8/4/04 243

245 Install EQ Brace - BWD Upr West 0.1 days Wed 8/4/04 Wed 8/4/04 244

246 Open BWD End Door - East 0.1 days Wed 8/4/04 Wed 8/4/04 245

247 Remove BWD Lwr East Gap Plate - Transport to IR-12 0.05 days Wed 8/4/04 Wed 8/4/04 246

248 Install EQ Brace - BWD Lwr East 0.15 days Wed 8/4/04 Thu 8/5/04 247

249 Insert Manlift 3 - BWD East 0.05 days Thu 8/5/04 Thu 8/5/04 248

250 Install EQ Brace - BWD Upr East 0.1 days Thu 8/5/04 Thu 8/5/04 249

251 Detector Open and EQ Braced 0 days Thu 8/5/04 Thu 8/5/04 250

8/1

BBR,Align,PEP

8/2

BBR,IFR

BBR,IFR

BBR,IFR

BBR,IFR

BBR,IFR

BBR,LST

BBR,LST

BBR,ELECT

BBR,HC,Crane

BBR,HC,Crane,BC

BBR,HC,Crane,BC

BBR,HC,FE

BBR,HC,Crane,FE

BBR,HC,Crane,FE

BBR,HC,Crane,FE

BBR,HC,Crane,FE

BBR,HC,FW

BBR,HC,Crane,FW

BBR,HC,Crane,FW

BBR,HC,Crane,FW

BBR,HC,BW

BBR,HC,Crane,BW

BBR,HC,Crane,BW

BBR,HC,Crane,BW

BBR,HC,Crane,BW

BBR,HC,BE

BBR,HC,Crane,BE

BBR,HC,Crane,BE

BBR,HC,Crane,BE

BBR,HC,Crane,BE

8/5

H2 H1 H2 H1 H22003 2004 2005



252 IFR WORK - PREPARE LOWER SEXTANT (Owl Shift) 2.85 days Sun 8/1/04 Tue 8/3/04253 Remove LV Distribution Boxes FWD (4L & 4R) and BWD (4L & 4R) 0.5 days Sun 8/1/04 Sun 8/1/04 210

254 Remove HV Distribution Boxes FWD & BWD - Cut Lines Back to Barrel Steel 0.5 days Sun 8/1/04 Sun 8/1/04 253

255 Turn Off Gas to Sextant 4 0.05 days Mon 8/2/04 Mon 8/2/04 254

256 Disconnect Gas Lines and Cut Back to Barrel Steel 0.05 days Mon 8/2/04 Mon 8/2/04 255

257 Remove Copper Cooling Loops - Sextant 4 0.05 days Mon 8/2/04 Mon 8/2/04 256

258 Open Circumferential Raceway Covers for Sextant 4 0.05 days Mon 8/2/04 Mon 8/2/04 257

259 Open Vertical Raceway Covers Containing Cylindrical HV Cables 0.05 days Mon 8/2/04 Mon 8/2/04 258

260 Remove and Save Temperature Probes 0.25 days Mon 8/2/04 Mon 8/2/04 259

261 Remove Lwr FECs - 5 min/layer * 16 Layers * 4 Gaps 0.75 days Mon 8/2/04 Tue 8/3/04 260

262 Remove Lwr Vertical Raceways 0.5 days Tue 8/3/04 Tue 8/3/04 261

263 Remove LV & DAQ Cables in Cicumferential Raceways 0.1 days Tue 8/3/04 Tue 8/3/04 262

264 IFR Work Complete for Lower Sextant 0 days Tue 8/3/04 Tue 8/3/04 263

265 CRYO WORK - LWR SOLENOID SUPPORTS (Day Shift) 0.85 days Thu 8/5/04 Fri 8/6/04266 Unbolt Lwr External Axial Support Rods - FWD & BWD 0.25 days Thu 8/5/04 Thu 8/5/04 251

267 Remove Radial Support Arm - FWD Lwr East 0.1 days Thu 8/5/04 Thu 8/5/04 266

268 Remove Radial Support Arm - FWD Lwr West 0.1 days Thu 8/5/04 Thu 8/5/04 267

269 Remove Radial Support Arm - BWD Lwr East 0.1 days Thu 8/5/04 Thu 8/5/04 268

270 Remove Radial Support Arm - BWD Lwr West 0.1 days Thu 8/5/04 Thu 8/5/04 269

271 Release External Radial Wedge Support - FWD Upr East 0.05 days Thu 8/5/04 Thu 8/5/04 270

272 Release External Radial Wedge Support - FWD Upr West 0.05 days Thu 8/5/04 Thu 8/5/04 271

273 Release External Radial Wedge Support - BWD Upr East 0.05 days Thu 8/5/04 Thu 8/5/04 272

274 Release External Radial Wedge Support - BWD Upr West 0.05 days Fri 8/6/04 Fri 8/6/04 273

275 Transport Solenoid Radial Support Arms to IR-12 0.1 days Thu 8/5/04 Thu 8/5/04 270

276 Lower Solenoid Supports Released 0 days Thu 8/5/04 Thu 8/5/04 275

277 RIGGING WORK - REMOVE SHIELDING (Day Shift) 9 days Thu 8/5/04 Mon 8/16/04278 Disassemble Shield Wall Blocks 2 days Thu 8/5/04 Sat 8/7/04 276

279 Shield Wall Disassembled 0 days Sat 8/7/04 Sat 8/7/04 278

280 Cut Shield Wall Block for Cable Tray Clearance 1 day Sat 8/14/04 Mon 8/16/04 279FS+6 days

281 HALL CREW WORK - (Day Shift) 2 days Thu 8/5/04 Sat 8/7/04282 Finish Piping on IR-2 Roof 2 days Thu 8/5/04 Sat 8/7/04 276

283 HALL CREW WORK - MISC. PREP WORK (Swing Shift) 2.75 days Thu 8/5/04 Sat 8/7/04284 Remove Remining FWD GAP Plates - Transport to IR-12 0.4 days Thu 8/5/04 Thu 8/5/04 251

285 Remove Remaining BWD Gap Plates - Transport to IR-12 0.4 days Thu 8/5/04 Thu 8/5/04 284

286 Grind Off Lower Cooling Loop Weld Studs - FWD & BWD 0.75 days Fri 8/6/04 Fri 8/6/04 285

287 Drill & Tap FWD Door Tracks for Elevator Platform 0.5 days Fri 8/6/04 Fri 8/6/04 285

288 Cover FWD Barrel Face & FWD Beamline 0.5 days Fri 8/6/04 Fri 8/6/04 287

289 Install Steel Position Dial Indicators & Survey Targets 0.25 days Sat 8/7/04 Sat 8/7/04 288

290 Remove Lower West Electronics House Walkway - Take to Shop 0.1 days Fri 8/6/04 Fri 8/6/04 287

291 Install Upper Electronics House to East Detector Stairway 0.1 days Fri 8/6/04 Fri 8/6/04 290

292 Core Drill FWD Tunnel Ceiling for IFR Shield Wall Support Anchors 1.25 days Fri 8/6/04 Sat 8/7/04 291

BBR,IFR

BBR,IFR

BBR,IFR

BBR,IFR

BBR,IFR

BBR,IFR

BBR,IFR

BBR,IFR

BBR,IFR

BBR,IFR

BBR,IFR

8/3

BBR,HC,CRYO,FE,FW

BBR,HC,CRYO,Crane,FE

BBR,HC,CRYO,Crane,FW

BBR,HC,CRYO,Crane,BE

BBR,HC,CRYO,Crane,BW

BBR,HC,CRYO,FE

BBR,HC,CRYO,FW

BBR,HC,CRYO,BE

BBR,HC,CRYO,BW

BBR,HC,Crane

8/5

BBR,HC,RIG,Crane

8/7

BBR,Contract

BBR,HC

BBR,HC,Crane,FE,FW

BBR,HC,Crane,BE,BW

BBR,HC,BE,BW,FE,FW

BBR,HC,FC

BBR,HC

BBR,HC,Crane

BBR,HC,Crane

BBR,HC,Crane

BBR,HC

H2 H1 H2 H1 H22003 2004 2005


Flux Return Steel


2004 Installation



293 LST WORK - INSTALL CABLEWAYS & RACKS (Owl Shift) 5 days Fri 8/6/04 Thu 8/12/04294 Install Cable Trays and Raceways 5 days Fri 8/6/04 Thu 8/12/04 290

295 HALL CREW WORK - REMOVE LWR STEEL (Two 8-Hour Shifts) 2.8 days Sat 8/7/04 Wed 8/11/04296 Remove Lwr FWD Center Gap Plate - Transport to IR-12 (incl bolts) 0.2 days Sat 8/7/04 Mon 8/9/04 279,292

297 Remove Corner Plate F3 - Transport to IR-12 (incl bolts) 0.4 days Mon 8/9/04 Mon 8/9/04 296

298 Record Steel Movement 0.05 days Mon 8/9/04 Mon 8/9/04 297

299 Tap East Hole in Lower Flux Bar 0.5 days Mon 8/9/04 Tue 8/10/04 297


301 Record Steel Movement 0.05 days Mon 8/9/04 Mon 8/9/04 300

302 Tap West Hole in Lower Flux Bar 0.5 days Mon 8/9/04 Tue 8/10/04 300

303 Install FWD Weld Studs for Incremental Conduit 1 day Tue 8/10/04 Wed 8/11/04 302

304 Remove Corner Plate B3 - Transport to IR-12 (incl bolts) 0.4 days Mon 8/9/04 Tue 8/10/04 300

305 Record Steel Movement 0.05 days Tue 8/10/04 Tue 8/10/04 304

306 Remove Corner Plate B4 - Transport to IR-12 (incl bolts) 0.4 days Tue 8/10/04 Tue 8/10/04 304

307 Record Steel Movement 0.05 days Tue 8/10/04 Tue 8/10/04 306

308 Install BWD Weld Studs for Incremental Conduit 1 day Tue 8/10/04 Wed 8/11/04 306

309 Remove Flux Bar - FWD Bottom - Transport to IR-12 (incl bolts) 0.25 days Tue 8/10/04 Tue 8/10/04 306

310 Lower Steel Removed 0 days Tue 8/10/04 Tue 8/10/04 309

311 BOTTOM SEXTANT DETECTOR REPLACEMENT 22.75 days Wed 8/11/04 Wed 9/8/04312 HALL CREW WORK - REMOVE RPCs (Two 8-Hour Shifts) 10.4 days Wed 8/11/04 Mon 8/23/04313 Transport Lower Elevator Platform Components to IR-2 - Install 0.5 days Wed 8/11/04 Wed 8/11/04 310

314 Remove 18 Layers of RPCs & Dispose (2hr 10min/layer)(Pull & Cut) 3 days Wed 8/11/04 Sat 8/14/04 313

315 Lower RPCs Removed 0 days Sat 8/14/04 Sat 8/14/04 314

316 Deliver LST Modules to IR-2 0.15 days Sat 8/14/04 Sat 8/14/04 314

317 Transport Bottom Brass Absorber Plates to IR-2 (84 Plates) 0.1 days Sat 8/14/04 Sat 8/14/04 316

318 Remove Lower Elevator Platform - Transport to IR-12 0.25 days Mon 8/16/04 Mon 8/16/04 340

319 Install 6 Layers of Brass Absorber - Bottom (51min/plate) 5.5 days Mon 8/16/04 Mon 8/23/04 318

320 Lower Brass Absorber Installed 0 days Mon 8/23/04 Mon 8/23/04 319

321 HALL CREW - REPLACE LOWER STEEL (Two 8-Hour Shifts) 12.35 days Mon 8/23/04 Wed 9/8/04322 Retrieve FWD Bottom Flux Bar From IR-12 - Install 0.25 days Mon 8/23/04 Mon 8/23/04 320,343

323 Retrieve Lower Elevator Platform from IR-12 - Install 0.25 days Mon 8/23/04 Mon 8/23/04 322

324 Install Anchors in FWD Tunnel Ceiling 1 day Mon 8/23/04 Tue 8/24/04 323

325 Load Test FWD Tunnel Ceiling Anchors 0.25 days Tue 8/24/04 Wed 8/25/04 324

326 Install IFR Shield Wall Ceiling Brackets 0.5 days Wed 8/25/04 Wed 8/25/04 325

327 Retrieve Corner Plates F3,F4,B3,B4 from IR-12 0.25 days Wed 8/25/04 Wed 8/25/04 326

328 Remove Lower Elevator Platform - Transport to IR-12 0.25 days Fri 9/3/04 Fri 9/3/04 345,327

329 Install Corner Plate B3 0.5 days Fri 9/3/04 Fri 9/3/04 328

330 Torque Corner Plate Bolts - B3 0.5 days Fri 9/3/04 Tue 9/7/04 329

331 Install Corner Plate - B4 0.5 days Fri 9/3/04 Tue 9/7/04 329

332 Torque Corner Plate Bolts - B4 0.5 days Tue 9/7/04 Tue 9/7/04 331

333 Install Corner Plate F3 0.5 days Tue 9/7/04 Tue 9/7/04 331

334 Torque Corner Plate Bolts- F3 0.5 days Tue 9/7/04 Wed 9/8/04 333

335 Install Corner Plate F4 0.5 days Tue 9/7/04 Wed 9/8/04 333

336 Torque Coner Block Bolts 0.5 days Wed 9/8/04 Wed 9/8/04 335

337 Install Lower Center Gap Plate 0.15 days Wed 9/8/04 Wed 9/8/04 335

338 Lower Steel Replaced 0 days Wed 9/8/04 Wed 9/8/04 337

BBR,LST

BBR,HC,Crane,FC

BBR,HC,Crane,FE

BBR,HC

BBR,MFD,FE

BBR,HC,Crane,FW

BBR,HC

BBR,MFD,FW

BBR,HC

BBR,HC,Crane,BE

BBR,HC

BBR,HC,Crane,BW

BBR,HC

BBR,HC

BBR,HC,Crane,FC

8/10

BBR,HC,Crane

BBR,HC,Crane,FC,BE,BW

8/14

BBR,HC,Crane

BBR,HC,Crane

BBR,HC,Crane,FC


8/23

BBR,HC,Crane,FC

BBR,HC,Crane,FC

BBR,HC

BBR,HC

BBR,HC,Crane

BBR,HC,Crane

BBR,HC,Crane

BBR,HC,Crane

BBR,HC

BBR,HC,Crane

BBR,HC

BBR,HC,Crane

BBR,HC

BBR,HC,Crane

BBR,HC

BBR,HC,Crane

9/8

H2 H1 H2 H1 H22003 2004 2005



339 LST INSTALLATION WORK (One 10-Hour Shift) 17.35 days Sat 8/14/04 Fri 9/3/04340 Install Layer 18 LSTs 1 day Sat 8/14/04 Mon 8/16/04 316

341 Install 11 Layers of LSTs (1 layer/day) (One 10-hour Shift) 10.1 days Mon 8/23/04 Fri 9/3/04 323

342 LST HOOKUP WORK (Owl Shift) 15.35 days Mon 8/16/04 Thu 9/2/04343 Layer 18 LST Hookup & Checkout 5 days Mon 8/16/04 Sat 8/21/04 340

344 LST Hookup & Checkout 9.1 days Mon 8/23/04 Thu 9/2/04 341SS

345 Lower LSTs Installed and Operational 0 days Thu 9/2/04 Thu 9/2/04 344

346 SCHEDULE ANALYSIS - DO WE PROCEED? 0 days Mon 8/30/04 Mon 8/30/04347 POINT OF COMMITMENT 0 days Tue 9/7/04 Tue 9/7/04348 REMOVE UPPER STEEL 5 days Tue 9/7/04 Sat 9/11/04349 IFR WORK - PREPARE UPPER SEXTANT (Owl Shift) 2.85 days Wed 9/8/04 Sat 9/11/04350 Remove LV Distribution Boxes FWD (1L & 1R) and BWD (1L & 1R) 0.5 days Wed 9/8/04 Wed 9/8/04 337

351 Remove HV Distribution Boxes FWD & BWD - Cut Lines Back to Barrel Steel 0.5 days Wed 9/8/04 Thu 9/9/04 350

352 Turn Off Gas to Sextant 1 0.05 days Thu 9/9/04 Thu 9/9/04 351

353 Disconnect Gas Lines and Cut Back to Barrel Steel 0.05 days Thu 9/9/04 Thu 9/9/04 352

354 Remove Copper Cooling Loops - Sextant 1 0.05 days Thu 9/9/04 Thu 9/9/04 353

355 Open Circumferential Raceway Covers for Sextant 1 0.05 days Thu 9/9/04 Thu 9/9/04 354

356 Open Vertical Raceway Covers Containing Cylindrical HV Cables 0.05 days Thu 9/9/04 Thu 9/9/04 355

357 Remove and Save Temperature Probes 0.25 days Thu 9/9/04 Thu 9/9/04 356

358 Remove Lwr FECs - 5 min/layer * 16 Layers * 4 Gaps 0.75 days Thu 9/9/04 Fri 9/10/04 357

359 Remove Lwr Vertical Raceways 0.5 days Fri 9/10/04 Sat 9/11/04 358

360 Remove LV & DAQ Cables in Cicumferential Raceways 0.1 days Sat 9/11/04 Sat 9/11/04 359

361 IFR Work Complete for Upper Sextant 0 days Sat 9/11/04 Sat 9/11/04 360

362 HALL CREW WORK - REMOVE UPR STEEL (Two 8-Hour Shifts) 4.6 days Tue 9/7/04 Sat 9/11/04363 Remove Solenoid Radial Support Arm - FWD Upr East 0.1 days Wed 9/8/04 Wed 9/8/04 337

364 Remove Solenoid Radial Support Arm - FWD Upr West 0.1 days Wed 9/8/04 Wed 9/8/04 363

365 Grind Off Upper Cooling Loop Weld Studs - FWD & BWD 0.75 days Tue 9/7/04 Tue 9/7/04 347

366 Transport Solenoid Radial Support Arms to IR-12 0.1 days Wed 9/8/04 Wed 9/8/04 364

367 Remove Upr FWD Center Gap Plate - Transport to IR-12 (incl bolts) 0.2 days Wed 9/8/04 Wed 9/8/04 364

368 Remove Corner Plate F1 - Transport to IR-12 (incl bolts) 0.4 days Wed 9/8/04 Thu 9/9/04 367

369 Record Steel Movement 0.05 days Thu 9/9/04 Thu 9/9/04 368

370 Tap East Hole in Upper Flux Bar 0.5 days Thu 9/9/04 Thu 9/9/04 368

371 Remove Corner Plate F6 - Transport to IR-12 (incl bolts) 0.4 days Thu 9/9/04 Thu 9/9/04 368

372 Record Steel Movement 0.05 days Thu 9/9/04 Thu 9/9/04 371

373 Tap West Hole in Upper Flux Bar 0.5 days Thu 9/9/04 Fri 9/10/04 371

374 Install BWD Weld Studs for Incremental Conduit 1 day Thu 9/9/04 Fri 9/10/04 371

375 Install FWD Weld Studs for Incremental Conduit 1 day Fri 9/10/04 Sat 9/11/04 374

376 Remove Flux Bar - FWD Top - Transport to IR-12 (incl bolts) 0.25 days Fri 9/10/04 Fri 9/10/04 374

377 Upper Steel Removed 0 days Fri 9/10/04 Fri 9/10/04 376

378 LST WORK - INSTALL CABLEWAYS & RACKS (Owl Shift) 5 days Tue 9/7/04 Sat 9/11/04379 Install Cable Trays and Raceways 5 days Tue 9/7/04 Sat 9/11/04 347

BBR,LST,Crane

BBR,HC,LST,Crane,FC,BE,BW

BBR,LST

BBR,LST

9/2

8/30

9/7

BBR,IFR

BBR,IFR

BBR,IFR

BBR,IFR

BBR,IFR

BBR,IFR

BBR,IFR

BBR,IFR

BBR,IFR

BBR,IFR

BBR,IFR

9/11



BBR,HC,BE,BW,FE,FW

BBR,HC,Crane

BBR,HC,Crane,FC

BBR,HC,Crane,FE

BBR,HC

BBR,MFD,FE

BBR,HC,Crane,FW

BBR,HC

BBR,MFD,FW

BBR,HC

BBR,HC

BBR,HC,Crane,FC

9/10

BBR,LST

H2 H1 H2 H1 H22003 2004 2005



380 UPPER SEXTANT DETECTOR REPLACEMENT 21.4 days Fri 9/10/04 Fri 10/8/04381 HALL CREW WORK - REMOVE RPCs (Two 8-Hour Shifts) 8.65 days Fri 9/10/04 Tue 9/21/04382 Retrieve Upper Elevator Platform from IR-12 - Install 0.5 days Fri 9/10/04 Sat 9/11/04 376

383 Remove 18 Layers of RPCs & Dispose (1hr 48min/layer) 2.5 days Sat 9/11/04 Tue 9/14/04 382

384 Deliver LST Modules to IR-2 0.15 days Tue 9/14/04 Tue 9/14/04 383

385 Transport Top Brass Absorber Plates to IR-2 (84 Plates) 0.1 days Wed 9/15/04 Wed 9/15/04 384

386 Install 6 Layers of Brass Absorber - Top (42min/plate) 4.5 days Thu 9/16/04 Tue 9/21/04 399

387 Upper Brass Absorber Installed 0 days Tue 9/21/04 Tue 9/21/04 386

388 REPLACE UPPER STEEL (Two 8-Hour Shifts) 11.15 days Wed 9/22/04 Thu 10/7/04389 Retrieve FWD Top Flux Bar From IR-12 - Install 0.25 days Wed 9/22/04 Wed 9/22/04 387,402

390 Retrieve Corner Plates F1 & F6 from IR-12 0.15 days Wed 9/22/04 Wed 9/22/04 389

391 Remove Upper Elevator Platform - Transport to IR-12 0.25 days Tue 10/5/04 Tue 10/5/04 390,404


393 Torque Corner Plate Bolts - F1 0.5 days Wed 10/6/04 Wed 10/6/04 392

394 Install Corner Plate - F6 0.5 days Wed 10/6/04 Wed 10/6/04 392


396 Install Upper Center Gap Plate 0.15 days Thu 10/7/04 Thu 10/7/04 395

397 Upper Steel Replaced 0 days Thu 10/7/04 Thu 10/7/04 396

398 LST INSTALLATION WORK (One 10-Hour Shift) 15.25 days Wed 9/15/04 Tue 10/5/04399 Install Layer 18 LSTs 1 day Wed 9/15/04 Wed 9/15/04 384

400 Install 11 Layers of LSTs (1 layer/day) (One 10-hour Shift) 9 days Wed 9/22/04 Tue 10/5/04 389

401 LST HOOKUP WORK (Owl Shift) 14.25 days Thu 9/16/04 Tue 10/5/04402 Layer 18 LST Hookup & Checkout 5 days Thu 9/16/04 Tue 9/21/04 399

403 LST Hookup & Checkout 9 days Wed 9/22/04 Tue 10/5/04 400SS

404 Upper LSTs Installed and Operational 0 days Tue 10/5/04 Tue 10/5/04 403

405 VESDA SYSTEM 3 days Tue 10/5/04 Fri 10/8/04406 Modify VESDA System for LST Electronic Racks 2 days Tue 10/5/04 Thu 10/7/04 404

407 Retest Affected VESDA Zones 1 day Thu 10/7/04 Fri 10/8/04 406

408 PREP FOR DETECTOR CLOSE-UP 6.8 days Thu 10/7/04 Fri 10/15/04409 CRYO WORK ADJUST SOLENOID SUPPORTS (Two 8-Hour Shifts) 1.3 days Thu 10/7/04 Fri 10/8/04410 Deliver Solenoid Radial Support Arms to IR-2 0.1 days Thu 10/7/04 Thu 10/7/04 396

411 Install Solenoid Radial Support Arm - FWD Lwr West 0.1 days Thu 10/7/04 Thu 10/7/04 410

412 Install Solenoid Radial Support Arm - FWD Lwr East 0.1 days Thu 10/7/04 Thu 10/7/04 411

413 Install Solenoid Radial Support Arm - BWD Lwr East 0.1 days Thu 10/7/04 Thu 10/7/04 412

414 Install Solenoid Radial Support Arm - BWD Lwr West 0.1 days Thu 10/7/04 Thu 10/7/04 413

415 Connect Solenoid External Axial Supports - BWD Lwr East & West 0.1 days Thu 10/7/04 Thu 10/7/04 414

416 Connect and Tension Solenoid Axial Support Rods - Lwr FWD West & East East 0.15 days Thu 10/7/04 Thu 10/7/04 415

417 Adjust Solenoid External Radial Support Wedge - Upr Fwd West 0.05 days Thu 10/7/04 Thu 10/7/04 416

418 Adjust Solenoid External Radial Support Wedge - Upr FWD East 0.05 days Thu 10/7/04 Thu 10/7/04 417

419 Adjust Solenoid External Radial Support Wedge - Upr Bwd East 0.05 days Fri 10/8/04 Fri 10/8/04 418

420 Adjust Solenoid External Radial Support Wedge - Upr Bwd West 0.05 days Fri 10/8/04 Fri 10/8/04 419

421 Install Solenoid Radial Support Arm - Upr FWD West 0.1 days Fri 10/8/04 Fri 10/8/04 420

422 Install Solenoid Radial Support Arm - Upr FWD East 0.1 days Fri 10/8/04 Fri 10/8/04 421

423 Connect and Tension Solenoid Axial Support Rods - Upr Fwd West & East 0.15 days Fri 10/8/04 Fri 10/8/04 422

424 Solenoid Supports Adjusted 0 days Fri 10/8/04 Fri 10/8/04 423

BBR,HC,Crane


BBR,HC,Crane

BBR,HC,Crane


9/21

BBR,HC,Crane,FC

BBR,HC,Crane

BBR,HC,Crane

BBR,HC,Crane

BBR,HC

BBR,HC,Crane

BBR,HC

BBR,HC,Crane

10/7

BBR,LST,Crane


BBR,LST

BBR,LST

10/5

BBR,FT

BBR,FT

BBR,HC,Crane

BBR,HC,CRYO,FW,Crane

BBR,HC,CRYO,FE,Crane

BBR,HC,CRYO,BE,Crane

BBR,HC,CRYO,BW,Crane

BBR,HC,CRYO,BE,BW

BBR,HC,CRYO,FE,FW

BBR,HC,CRYO,FW

BBR,HC,CRYO,FE

BBR,HC,CRYO,BE

BBR,HC,CRYO,BW



BBR,HC,CRYO,FE,FW

10/8

H2 H1 H2 H1 H22003 2004 2005


IFR Shield Wall



425 HALL CREW WORK - INSTALL IFR SHIELDING (Two 8-Hour Shifts) 3.85 days Thu 10/7/04 Wed 10/13/04426 Deliver IFR Shield Wall Components to IR-2 0.15 days Thu 10/7/04 Thu 10/7/04 414

427 Install FWD IFR Background Shield Wall Supports & Platform 2 days Fri 10/8/04 Tue 10/12/04 422,426

428 Install IFR Shield Wall - Remove Platform 1 day Tue 10/12/04 Wed 10/13/04 427

429 Install Shielding in Shield Wall Cable Tray Opening 1 day Fri 10/8/04 Mon 10/11/04 422

430 Remove Upper Electronics House to East Detector Stairway 0.1 days Wed 10/13/04 Wed 10/13/04 428

431 Replace Lower West Electronics House Walkway 0.1 days Wed 10/13/04 Wed 10/13/04 430

432 RIGGING WORK - ASSEMBLE SHIELD WALL (One 10-Hour Shift) 2 days Wed 10/13/04 Fri 10/15/04433 Assemble Shield Wall 2 days Wed 10/13/04 Fri 10/15/04 431

434 Shield Wall Assembled 0 days Fri 10/15/04 Fri 10/15/04 433

435 HALL CREW WORK - CLOSE DETECTOR (Swing Shift) 5.2 days Thu 10/7/04 Thu 10/14/04436 Deliver BWD End Plug, Lead Horseshoe and DIRC Cylinder to IR-2 0.2 days Thu 10/7/04 Thu 10/7/04 426

437 Install BWD End Plug, Lead Horseshoe and DIRC Cylinder 0.2 days Wed 10/13/04 Wed 10/13/04 436,431

438 Remove EQ Brace - Upr FWD East 0.1 days Wed 10/13/04 Wed 10/13/04 437

439 Remove EQ Brace - Upr Fwd West 0.1 days Wed 10/13/04 Wed 10/13/04 438

440 Remove EQ Brace - Lwr Fwd East 0.1 days Wed 10/13/04 Wed 10/13/04 439

441 Close FWD East End Door 0.05 days Thu 10/14/04 Thu 10/14/04 440

442 Remove Manlift 1 - Fwd West 0.05 days Thu 10/14/04 Thu 10/14/04 441

443 Remove EQ Brace - Lwr FWD West 0.1 days Thu 10/14/04 Thu 10/14/04 442

444 Close FWD West End Door 0.05 days Thu 10/14/04 Thu 10/14/04 443

445 Remove EQ Brace - Upr BWD West 0.1 days Thu 10/14/04 Thu 10/14/04 444

446 Remove Manlift 2 - BWD West 0.05 days Thu 10/14/04 Thu 10/14/04 445

447 Remove EQ Brace - Lwr BWD West 0.1 days Thu 10/14/04 Thu 10/14/04 446

448 Remove EQ Brace - Upr BWD East 0.1 days Thu 10/14/04 Thu 10/14/04 447

449 Remove Manlift 3 - BWD East 0.05 days Thu 10/14/04 Thu 10/14/04 448

450 Remove EQ Brace - Lwr BWD East 0.1 days Thu 10/14/04 Thu 10/14/04 449

451 Close BWD West End Door 0.1 days Thu 10/14/04 Thu 10/14/04 450

452 Close BWD East End Door 0.1 days Thu 10/14/04 Thu 10/14/04 451

453 Close Curtain Wall 0.05 days Thu 10/14/04 Thu 10/14/04 452

454 Detector Closed 0 days Thu 10/14/04 Thu 10/14/04 453

455 PREPARE SOLENOID FOR POWER UP 1 day Thu 10/14/04 Fri 10/15/04456 Magnet Studies 1 day Thu 10/14/04 Fri 10/15/04 452

BBR,HC,Crane

BBR,HC,Crane,FC

BBR,HC,Crane,FC

BBR,HC

BBR,HC,Crane

BBR,HC,Crane

BBR,HC,Crane

10/15

BBR,HC,Crane

BBR,HC,Crane,BC

BBR,HC,Crane,FE

BBR,HC,Crane,FW

BBR,HC,Crane,FE

BBR,HC,FE

BBR,HC,Crane,FW

BBR,HC,Crane,FW

BBR,HC,FW

BBR,HC,Crane,BW

BBR,HC,Crane,BW

BBR,HC,Crane,BW

BBR,HC,Crane,BE

BBR,HC,Crane,BE

BBR,HC,Crane,BE

BBR,HC,BW

BBR,HC,BE

BBR,HC,Crane

10/14

BBR,CRYO

H1 H2 H1 H2 H12004 2005 2006


Critical PathID Task Name Duration Start Finish Predecessors

1 SUMMER DOWN 2004 60.95 days Sun 8/1/04 Fri 10/15/042 Summer Down Begins 0 days Sun 8/1/04 Sun 8/1/04

3 CONTROLLED ACCESS 2 days Sun 8/1/04 Mon 8/2/04

4 SURVEY WORK (Two 8-Hour Shifts) 2 days Sun 8/1/04 Mon 8/2/045 Post Run Survey 2 days Sun 8/1/04 Mon 8/2/04 2

6 Permitted Access Begins 0 days Mon 8/2/04 Mon 8/2/04 5

7 BEGIN BABAR WORK - END DOORS CLOSED 3 days Sun 8/1/04 Tue 8/3/048 IFR WORK (Day Shift) 0.45 days Tue 8/3/04 Tue 8/3/049 Shut Off & Drain IFR Barrel Cooling System 0.15 days Tue 8/3/04 Tue 8/3/04 6

10 Verify LV Fuse Location to Sextants 4 & 1 0.05 days Tue 8/3/04 Tue 8/3/04 9

11 Turn OFF LV & HV 0.05 days Tue 8/3/04 Tue 8/3/04 10

12 Remove DAQ Cables from Sextant 4 to IFBs 0.1 days Tue 8/3/04 Tue 8/3/04 11

13 Clean Up Obsolete RPC Cables 0.1 days Tue 8/3/04 Tue 8/3/04 12

19 OPEN DETECTOR & REMOVE LOWER STEEL 13.95 days Sun 8/1/04 Mon 8/16/0420 HALL CREW WORK (Two 8-Hour Shifts) 4.2 days Sun 8/1/04 Thu 8/5/0424 Open FWD End Door - East 0.1 days Tue 8/3/04 Tue 8/3/04 23,13,16

25 Remove FWD Lwr East Gap Plate - Transport to IR-12 0.05 days Tue 8/3/04 Tue 8/3/04 24

26 Install EQ Brace - FWD Lwr East 0.15 days Tue 8/3/04 Tue 8/3/04 25

27 Insert Manlift 1 - FWD East 0.05 days Tue 8/3/04 Tue 8/3/04 26

28 Install EQ Brace - FWD Upr East 0.1 days Tue 8/3/04 Tue 8/3/04 27

29 Open Fwd End Door - West 0.1 days Tue 8/3/04 Tue 8/3/04 28

30 Remove FWD Lwr West Gap Plate - Transport to IR-12 0.05 days Wed 8/4/04 Wed 8/4/04 29

31 Install EQ Brace - FWD Lwr West 0.15 days Wed 8/4/04 Wed 8/4/04 30

32 Install EQ Brace - FWD Upr West 0.1 days Wed 8/4/04 Wed 8/4/04 31

33 Open BWD End Door - West 0.1 days Wed 8/4/04 Wed 8/4/04 32

34 Remove BWD Lwr West Gap Plate - Transport to IR-12 0.05 days Wed 8/4/04 Wed 8/4/04 33

35 Install EQ Brace - BWD Lwr West 0.15 days Wed 8/4/04 Wed 8/4/04 34

36 Insert Manlift 2 - BWD West 0.05 days Wed 8/4/04 Wed 8/4/04 35

37 Install EQ Brace - BWD Upr West 0.1 days Wed 8/4/04 Wed 8/4/04 36

38 Open BWD End Door - East 0.1 days Wed 8/4/04 Wed 8/4/04 37

39 Remove BWD Lwr East Gap Plate - Transport to IR-12 0.05 days Wed 8/4/04 Wed 8/4/04 38

40 Install EQ Brace - BWD Lwr East 0.15 days Wed 8/4/04 Thu 8/5/04 39

41 Insert Manlift 3 - BWD East 0.05 days Thu 8/5/04 Thu 8/5/04 40

42 Install EQ Brace - BWD Upr East 0.1 days Thu 8/5/04 Thu 8/5/04 41

43 Detector Open and EQ Braced 0 days Thu 8/5/04 Thu 8/5/04 42

57 CRYO WORK - LWR SOLENOID SUPPORTS (Day Shift) 0.85 days Thu 8/5/04 Fri 8/6/0458 Unbolt Lwr External Axial Support Rods - FWD & BWD 0.25 days Thu 8/5/04 Thu 8/5/04 43

59 Remove Radial Support Arm - FWD Lwr East 0.1 days Thu 8/5/04 Thu 8/5/04 58

60 Remove Radial Support Arm - FWD Lwr West 0.1 days Thu 8/5/04 Thu 8/5/04 59

61 Remove Radial Support Arm - BWD Lwr East 0.1 days Thu 8/5/04 Thu 8/5/04 60

62 Remove Radial Support Arm - BWD Lwr West 0.1 days Thu 8/5/04 Thu 8/5/04 61

67 Transport Solenoid Radial Support Arms to IR-12 0.1 days Thu 8/5/04 Thu 8/5/04 62

68 Lower Solenoid Supports Released 0 days Thu 8/5/04 Thu 8/5/04 67

8/1

BBR,Align,PEP

8/2

BBR,IFR

BBR,IFR

BBR,IFR

BBR,IFR

BBR,IFR

BBR,HC,FE

BBR,HC,Crane,FE

BBR,HC,Crane,FE

BBR,HC,Crane,FE

BBR,HC,Crane,FE

BBR,HC,FW

BBR,HC,Crane,FW

BBR,HC,Crane,FW

BBR,HC,Crane,FW

BBR,HC,BW

BBR,HC,Crane,BW

BBR,HC,Crane,BW

BBR,HC,Crane,BW

BBR,HC,Crane,BW

BBR,HC,BE

BBR,HC,Crane,BE

BBR,HC,Crane,BE

BBR,HC,Crane,BE

BBR,HC,Crane,BE

8/5

BBR,HC,CRYO,FE,FW



BBR,HC,CRYO,Crane,BE

BBR,HC,CRYO,Crane,BW

BBR,HC,Crane

8/5

H2 H1 H2 H1 H22003 2004 2005



69 RIGGING WORK - REMOVE SHIELDING (Day Shift) 9 days Thu 8/5/04 Mon 8/16/0470 Disassemble Shield Wall Blocks 2 days Thu 8/5/04 Sat 8/7/04 68

71 Shield Wall Disassembled 0 days Sat 8/7/04 Sat 8/7/04 70

75 HALL CREW WORK - MISC. PREP WORK (Swing Shift) 2.75 days Thu 8/5/04 Sat 8/7/0476 Remove Remining FWD GAP Plates - Transport to IR-12 0.4 days Thu 8/5/04 Thu 8/5/04 43

77 Remove Remaining BWD Gap Plates - Transport to IR-12 0.4 days Thu 8/5/04 Thu 8/5/04 76

79 Drill & Tap FWD Door Tracks for Elevator Platform 0.5 days Fri 8/6/04 Fri 8/6/04 77

82 Remove Lower West Electronics House Walkway - Take to Shop 0.1 days Fri 8/6/04 Fri 8/6/04 79

83 Install Upper Electronics House to East Detector Stairway 0.1 days Fri 8/6/04 Fri 8/6/04 82

84 Core Drill FWD Tunnel Ceiling for IFR Shield Wall Support Anchors 1.25 days Fri 8/6/04 Sat 8/7/04 83

87 HALL CREW WORK - REMOVE LWR STEEL (Two 8-Hour Shifts) 2.8 days Sat 8/7/04 Wed 8/11/0488 Remove Lwr FWD Center Gap Plate - Transport to IR-12 (incl bolts) 0.2 days Sat 8/7/04 Mon 8/9/04 71,84



96 Remove Corner Plate B3 - Transport to IR-12 (incl bolts) 0.4 days Mon 8/9/04 Tue 8/10/04 92

98 Remove Corner Plate B4 - Transport to IR-12 (incl bolts) 0.4 days Tue 8/10/04 Tue 8/10/04 96

101 Remove Flux Bar - FWD Bottom - Transport to IR-12 (incl bolts) 0.25 days Tue 8/10/04 Tue 8/10/04 98

102 Lower Steel Removed 0 days Tue 8/10/04 Tue 8/10/04 101

103 BOTTOM SEXTANT DETECTOR REPLACEMENT 22.75 days Wed 8/11/04 Wed 9/8/04104 HALL CREW WORK - REMOVE RPCs (Two 8-Hour Shifts) 10.4 days Wed 8/11/04 Mon 8/23/04105 Transport Lower Elevator Platform Components to IR-2 - Install 0.5 days Wed 8/11/04 Wed 8/11/04 102

106 Remove 18 Layers of RPCs & Dispose (2hr 10min/layer)(Pull & Cut) 3 days Wed 8/11/04 Sat 8/14/04 105

108 Deliver LST Modules to IR-2 0.15 days Sat 8/14/04 Sat 8/14/04 106

110 Remove Lower Elevator Platform - Transport to IR-12 0.25 days Mon 8/16/04 Mon 8/16/04 132

111 Install 6 Layers of Brass Absorber - Bottom (51min/plate) 5.5 days Mon 8/16/04 Mon 8/23/04 110

112 Lower Brass Absorber Installed 0 days Mon 8/23/04 Mon 8/23/04 111

113 HALL CREW - REPLACE LOWER STEEL (Two 8-Hour Shifts) 12.35 days Mon 8/23/04 Wed 9/8/04114 Retrieve FWD Bottom Flux Bar From IR-12 - Install 0.25 days Mon 8/23/04 Mon 8/23/04 112,135

115 Retrieve Lower Elevator Platform from IR-12 - Install 0.25 days Mon 8/23/04 Mon 8/23/04 114

120 Remove Lower Elevator Platform - Transport to IR-12 0.25 days Fri 9/3/04 Fri 9/3/04 137,119

121 Install Corner Plate B3 0.5 days Fri 9/3/04 Fri 9/3/04 120

123 Install Corner Plate - B4 0.5 days Fri 9/3/04 Tue 9/7/04 121


127 Install Corner Plate F4 0.5 days Tue 9/7/04 Wed 9/8/04 125

129 Install Lower Center Gap Plate 0.15 days Wed 9/8/04 Wed 9/8/04 127

131 LST INSTALLATION WORK (One 10-Hour Shift) 17.35 days Sat 8/14/04 Fri 9/3/04132 Install Layer 18 LSTs 1 day Sat 8/14/04 Mon 8/16/04 108

133 Install 11 Layers of LSTs (1 layer/day) (One 10-hour Shift) 10.1 days Mon 8/23/04 Fri 9/3/04 115

134 LST HOOKUP WORK (Owl Shift) 15.35 days Mon 8/16/04 Thu 9/2/04136 LST Hookup & Checkout 9.1 days Mon 8/23/04 Thu 9/2/04 133SS

137 Lower LSTs Installed and Operational 0 days Thu 9/2/04 Thu 9/2/04 136

138 SCHEDULE ANALYSIS - DO WE PROCEED? 0 days Mon 8/30/04 Mon 8/30/04

BBR,HC,RIG,Crane

8/7

BBR,HC,Crane,FE,FW

BBR,HC,Crane,BE,BW

BBR,HC,FC

BBR,HC,Crane

BBR,HC,Crane

BBR,HC

BBR,HC,Crane,FC

BBR,HC,Crane,FE

BBR,HC,Crane,FW

BBR,HC,Crane,BE

BBR,HC,Crane,BW

BBR,HC,Crane,FC

8/10

BBR,HC,Crane


BBR,HC,Crane

BBR,HC,Crane,FC


8/23

BBR,HC,Crane,FC

BBR,HC,Crane,FC

BBR,HC,Crane

BBR,HC,Crane

BBR,HC,Crane

BBR,HC,Crane

BBR,HC,Crane

BBR,HC,Crane

BBR,LST,Crane


BBR,LST

9/2

8/30

H2 H1 H2 H1 H22003 2004 2005



139 POINT OF COMMITMENT 0 days Tue 9/7/04 Tue 9/7/04140 REMOVE UPPER STEEL 5 days Tue 9/7/04 Sat 9/11/04154 HALL CREW WORK - REMOVE UPR STEEL (Two 8-Hour Shifts) 4.6 days Tue 9/7/04 Sat 9/11/04155 Remove Solenoid Radial Support Arm - FWD Upr East 0.1 days Wed 9/8/04 Wed 9/8/04 129

156 Remove Solenoid Radial Support Arm - FWD Upr West 0.1 days Wed 9/8/04 Wed 9/8/04 155

159 Remove Upr FWD Center Gap Plate - Transport to IR-12 (incl bolts) 0.2 days Wed 9/8/04 Wed 9/8/04 156

160 Remove Corner Plate F1 - Transport to IR-12 (incl bolts) 0.4 days Wed 9/8/04 Thu 9/9/04 159

163 Remove Corner Plate F6 - Transport to IR-12 (incl bolts) 0.4 days Thu 9/9/04 Thu 9/9/04 160

166 Install BWD Weld Studs for Incremental Conduit 1 day Thu 9/9/04 Fri 9/10/04 163

168 Remove Flux Bar - FWD Top - Transport to IR-12 (incl bolts) 0.25 days Fri 9/10/04 Fri 9/10/04 166

172 UPPER SEXTANT DETECTOR REPLACEMENT 21.4 days Fri 9/10/04 Fri 10/8/04173 HALL CREW WORK - REMOVE RPCs (Two 8-Hour Shifts) 8.65 days Fri 9/10/04 Tue 9/21/04174 Retrieve Upper Elevator Platform from IR-12 - Install 0.5 days Fri 9/10/04 Sat 9/11/04 168

175 Remove 18 Layers of RPCs & Dispose (1hr 48min/layer) 2.5 days Sat 9/11/04 Tue 9/14/04 174

176 Deliver LST Modules to IR-2 0.15 days Tue 9/14/04 Tue 9/14/04 175

180 REPLACE UPPER STEEL (Two 8-Hour Shifts) 11.15 days Wed 9/22/04 Thu 10/7/04181 Retrieve FWD Top Flux Bar From IR-12 - Install 0.25 days Wed 9/22/04 Wed 9/22/04 179,194

183 Remove Upper Elevator Platform - Transport to IR-12 0.25 days Tue 10/5/04 Tue 10/5/04 182,196


186 Install Corner Plate - F6 0.5 days Wed 10/6/04 Wed 10/6/04 184


188 Install Upper Center Gap Plate 0.15 days Thu 10/7/04 Thu 10/7/04 187

190 LST INSTALLATION WORK (One 10-Hour Shift) 15.25 days Wed 9/15/04 Tue 10/5/04191 Install Layer 18 LSTs 1 day Wed 9/15/04 Wed 9/15/04 176

192 Install 11 Layers of LSTs (1 layer/day) (One 10-hour Shift) 9 days Wed 9/22/04 Tue 10/5/04 181

193 LST HOOKUP WORK (Owl Shift) 14.25 days Thu 9/16/04 Tue 10/5/04194 Layer 18 LST Hookup & Checkout 5 days Thu 9/16/04 Tue 9/21/04 191

195 LST Hookup & Checkout 9 days Wed 9/22/04 Tue 10/5/04 192SS

196 Upper LSTs Installed and Operational 0 days Tue 10/5/04 Tue 10/5/04 195

200 PREP FOR DETECTOR CLOSE-UP 6.8 days Thu 10/7/04 Fri 10/15/04201 CRYO WORK ADJUST SOLENOID SUPPORTS (Two 8-Hour Shifts) 1.3 days Thu 10/7/04 Fri 10/8/04202 Deliver Solenoid Radial Support Arms to IR-2 0.1 days Thu 10/7/04 Thu 10/7/04 188

203 Install Solenoid Radial Support Arm - FWD Lwr West 0.1 days Thu 10/7/04 Thu 10/7/04 202

204 Install Solenoid Radial Support Arm - FWD Lwr East 0.1 days Thu 10/7/04 Thu 10/7/04 203

205 Install Solenoid Radial Support Arm - BWD Lwr East 0.1 days Thu 10/7/04 Thu 10/7/04 204

206 Install Solenoid Radial Support Arm - BWD Lwr West 0.1 days Thu 10/7/04 Thu 10/7/04 205

207 Connect Solenoid External Axial Supports - BWD Lwr East & West 0.1 days Thu 10/7/04 Thu 10/7/04 206

208 Connect and Tension Solenoid Axial Support Rods - Lwr FWD West & East East 0.15 days Thu 10/7/04 Thu 10/7/04 207

209 Adjust Solenoid External Radial Support Wedge - Upr Fwd West 0.05 days Thu 10/7/04 Thu 10/7/04 208

210 Adjust Solenoid External Radial Support Wedge - Upr FWD East 0.05 days Thu 10/7/04 Thu 10/7/04 209

211 Adjust Solenoid External Radial Support Wedge - Upr Bwd East 0.05 days Fri 10/8/04 Fri 10/8/04 210

212 Adjust Solenoid External Radial Support Wedge - Upr Bwd West 0.05 days Fri 10/8/04 Fri 10/8/04 211

213 Install Solenoid Radial Support Arm - Upr FWD West 0.1 days Fri 10/8/04 Fri 10/8/04 212

214 Install Solenoid Radial Support Arm - Upr FWD East 0.1 days Fri 10/8/04 Fri 10/8/04 213

9/7



BBR,HC,Crane,FC

BBR,HC,Crane,FE

BBR,HC,Crane,FW

BBR,HC

BBR,HC,Crane,FC

BBR,HC,Crane


BBR,HC,Crane

BBR,HC,Crane,FC

BBR,HC,Crane

BBR,HC,Crane

BBR,HC,Crane

BBR,HC

BBR,HC,Crane

BBR,LST,Crane


BBR,LST

BBR,LST

10/5

BBR,HC,Crane

BBR,HC,CRYO,FW,Crane

BBR,HC,CRYO,FE,Crane

BBR,HC,CRYO,BE,Crane

BBR,HC,CRYO,BW,Crane

BBR,HC,CRYO,BE,BW

BBR,HC,CRYO,FE,FW

BBR,HC,CRYO,FW

BBR,HC,CRYO,FE

BBR,HC,CRYO,BE

BBR,HC,CRYO,BW



H2 H1 H2 H1 H22003 2004 2005


Critical Path

ID Task Name Duration Start Finish Predecessors

217 HALL CREW WORK - INSTALL IFR SHIELDING (Two 8-Hour Shifts) 3.85 days Thu 10/7/04 Wed 10/13/04219 Install FWD IFR Background Shield Wall Supports & Platform 2 days Fri 10/8/04 Tue 10/12/04 214,218

220 Install IFR Shield Wall - Remove Platform 1 day Tue 10/12/04 Wed 10/13/04 219

222 Remove Upper Electronics House to East Detector Stairway 0.1 days Wed 10/13/04 Wed 10/13/04 220

223 Replace Lower West Electronics House Walkway 0.1 days Wed 10/13/04 Wed 10/13/04 222

227 HALL CREW WORK - CLOSE DETECTOR (Swing Shift) 5.2 days Thu 10/7/04 Thu 10/14/04229 Install BWD End Plug, Lead Horseshoe and DIRC Cylinder 0.2 days Wed 10/13/04 Wed 10/13/04 228,223

230 Remove EQ Brace - Upr FWD East 0.1 days Wed 10/13/04 Wed 10/13/04 229

231 Remove EQ Brace - Upr Fwd West 0.1 days Wed 10/13/04 Wed 10/13/04 230

232 Remove EQ Brace - Lwr Fwd East 0.1 days Wed 10/13/04 Wed 10/13/04 231

233 Close FWD East End Door 0.05 days Thu 10/14/04 Thu 10/14/04 232

234 Remove Manlift 1 - Fwd West 0.05 days Thu 10/14/04 Thu 10/14/04 233

235 Remove EQ Brace - Lwr FWD West 0.1 days Thu 10/14/04 Thu 10/14/04 234

236 Close FWD West End Door 0.05 days Thu 10/14/04 Thu 10/14/04 235

237 Remove EQ Brace - Upr BWD West 0.1 days Thu 10/14/04 Thu 10/14/04 236

238 Remove Manlift 2 - BWD West 0.05 days Thu 10/14/04 Thu 10/14/04 237

239 Remove EQ Brace - Lwr BWD West 0.1 days Thu 10/14/04 Thu 10/14/04 238

240 Remove EQ Brace - Upr BWD East 0.1 days Thu 10/14/04 Thu 10/14/04 239

241 Remove Manlift 3 - BWD East 0.05 days Thu 10/14/04 Thu 10/14/04 240

242 Remove EQ Brace - Lwr BWD East 0.1 days Thu 10/14/04 Thu 10/14/04 241

243 Close BWD West End Door 0.1 days Thu 10/14/04 Thu 10/14/04 242

244 Close BWD East End Door 0.1 days Thu 10/14/04 Thu 10/14/04 243

247 PREPARE SOLENOID FOR POWER UP 1 day Thu 10/14/04 Fri 10/15/04248 Magnet Studies 1 day Thu 10/14/04 Fri 10/15/04 244

BBR,HC,Crane,FC

BBR,HC,Crane,FC

BBR,HC,Crane

BBR,HC,Crane

BBR,HC,Crane,BC

BBR,HC,Crane,FE

BBR,HC,Crane,FW

BBR,HC,Crane,FE

BBR,HC,FE

BBR,HC,Crane,FW

BBR,HC,Crane,FW

BBR,HC,FW

BBR,HC,Crane,BW

BBR,HC,Crane,BW

BBR,HC,Crane,BW

BBR,HC,Crane,BE

BBR,HC,Crane,BE

BBR,HC,Crane,BE

BBR,HC,BW

BBR,HC,BE

BBR,CRYO

H1 H2 H1 H2 H12004 2005 2006


Schedule Comments• Additional 4 days of PPS certification at

conclusion of BaBar LST work• Pre-run PEP survey work will follow PPS

certification – 2 days?• SLAC Computing Services outage presently

scheduled for August 16 & 17• Daily meetings will occur at the commencement

of each shift to discuss safety issues and the work list.

• A daily meeting will also occur at 15:00 to discuss schedule progress and conflicts


Potential Schedule Risks• 10 weeks of scheduled work time is needed to replace RPCs with 6 layers

of brass absorber and 12 layers of LST detectors in both the top and bottom sextants if NOTHING goes wrong

– Some time lost for tours and/or photography is a probability– No time allotted to replace LSTs that are not functioning properly after installation– Many tasks have NEVER been performed previously – could be a long learning

curve– Will lose 1:1 on schedule time for any of the above

• There may be some schedule optimization possible – but not much. From the critical path it is determined that the schedule is:

– Driven by crane usage – 1 crane– Driven by LST installation – 1 installation team– Most everyone is working in the same place – FWD end of barrel

• The IFR background shield wall may be more difficult to install than planned• The schedule assumes the acquisition of key personnel from outside of

SLAC– We believe we can acquire the needed resources through an agency. This is still

an open issue.– There are significant safety concerns and probable negative schedule effects if

key individuals are not acquired.


Potential Schedule Risks• The deformation of the flux return steel may be more

than shown by analysis– Bolts may not match bolt patterns

• Open Clearance holes in corner blocks

• Our tooling may not work as thought – modify during use– Incorrect CGs on handling fixtures– Malfunction of elevator platforms

• Potential power outages• Our mechanical installation team is aging

– Have some young replacements but not as experienced

• A mechanical breakdown of the crane would have an adverse schedule effect

• I believe the potential risk to the schedule is VERY HIGH

Documents

May 5, 2004H.J. Krebs1 2004 LST Installation Readiness Review 2004 IR-2 Installation Schedule H.J. Krebs May 5, 2004