7/30/2019 FU#4 outage
1/3
ID Task Name Duration Start Finish Predecessor
1 Isolate Francis Unit #4 1.54 days Jul 27 9:55 PM Jul 29 10:55
AM
2 NTPC to mechanically block & isolate Unit and dewater 2
hrs Jul 27 9:55 PM Jul 27 11:55 PM
3 Warranty Item - Replace Lower DT Cone 1.46 days Jul 27 11:55
PM Jul 29 10:55 AM
4 Match mark and dis-assemble the old Lower DT Cone Assy 3 hrs
Jul 27 11:55 PM Jul 28 2:55 AM2
5 Modify qty 4 DT Platform access covers 4 hrs Jul 28 2:55 AM
Jul 28 6:55 AM4
6 Install winch and move old Lower DT Cone into the MIV gallery
0.5 hrs Jul 28 2:55 AM Jul 28 3:25 AM 4
7 Raise old Lower DT Cone Assy to El. 183 0.5 hrs Jul 28 3:25 AM
Jul 28 3:55 AM6
8 Clean-up bottom flange of Upper DT Cone 0.5 hrs Jul 28 3:25 AM
Jul 28 3:55 AM6
9 Clean-up top flange of DT Elbow 0.5 hrs Jul 28 3:55 AM Jul 28
4:25 AM8
10 Measure overall height 0.5 hrs Jul 28 4:25 AM Jul 28 4:55
AM9
11 Grind top flange of DT Elbow 8 hrs Jul 28 4:55 AM Jul 28
12:55 PM 10
12 Descend new Lower DT Cone 1 hr Jul 28 3:55 AM Jul 28 4:55
AM713 Install winch and move new Lower DT Cone into final position
0.5 hrs Jul 28 12:55 PM Jul 28 1:25 PM 11,12
14 Raise Lower DT Cone, install 8 mm O-ring and lower back into
position 1.5 hrs Jul 28 1:25 PM Jul 28 2:55 PM 13
15 Install qty 60 M20 bolts with Molykote and torque tighten 2
hrs Jul 28 2:55 PM Jul 28 4:55 PM 14
16 Bore Upper DT Cone lower flange 22 mm dia holes to 24 mm dia
6 hrs Jul 28 4:55 PM Jul 28 10:55 PM 15
17 Descend the moveable disk to the MIV gallery 1 hr Jul 28 4:55
AM Jul 28 5:55 AM12
18 Move the disk into position and lift using 3 chain blocks 1
hr Jul 28 10:55 PM Jul 28 11:55 PM16,17
19 Install scissor lift tables and place disk in position with 8
mm O-ring 1 hr Jul 28 11:55 PM Jul 29 12:55 AM 18
20 Slide the moveable disk between the Upper and Lower DT Cones
2 hrs Jul 29 12:55 AM Jul 29 2:55 AM 19
21 Install qty 60 M20 studs with anti-seize and torque tighten 2
hrs Jul 29 2:55 AM Jul 29 4:55 AM20
22 I f re qui re d, p enc il gri nd er 24 m m di a ho les to e
ns ure s tud c an be h and t ight en 2 hrs Ju l 2 9 4: 55 A M J ul
29 6 :55 A M21
23 Fit the 8 mm O-ring on the upper flange of the Lower DT Cone
1 hr Jul 29 6:55 AM Jul 29 7:55 AM22
24 Install qty 120 clamps, bolts, lock plates and nuts with
anti-seize and f ingertighten
1 h r Ju l 2 9 7: 55 A M J ul 29 8 :55 A M23
25 Torque tighten the qty 120 M24 fasteners 2 hrs Jul 29 8:55 AM
Jul 29 10:55 AM24
26 Do not bend over corners on locking plates - to be carried
out at later date 0 hrs Jul 29 10:55 AM Jul 29 10:55 AM 25
27 Install DT pressure gauge piping 1 hr Jul 29 8:55 AM Jul 29
9:55 AM24
28 Install qty 4 access platform covers 1 hr Jul 28 1:25 PM Jul
28 2:25 PM 5,13
29 Remove qty 8 temporary brace 1 hr Jul 29 8:55 AM Jul 29 9:55
AM24
30 Hand unit back to NTPC 0 days Jul 29 10:55 AM Jul 29 10:55 AM
27,28,29,25
31 NTPC to unblock and water the unit 2 hrs Jul 29 10:55 AM Jul
29 12:55 PM 30
32 NTPC to start-up and run for 5 minutes at full speed no load
0.1 hrs Jul 29 12:55 PM Jul 29 1:01 PM 31
12 AM 1 AM 2 AM 3 AM 4 AM 5 AM 6 AM 7 AM 8 AM 9 AM 10 AM 11
AMSat Jul 27
Task
Milestone
Summary
Rolled Up Task
Rolled Up Milestone
Rolled Up Progress
Split
External Tasks
Project Summary
Group By Summary
Inactive Task
Inactive Milestone
Inactive Milestone
Inactive Summary
Manual Task
Duration-only
Manual Summary Rollup
Manual Summary
Start-only
Finish-only
External Tasks
External Milestone
Progress
Deadline
Prepared by L. D'Alessandro Exchange of Lower DT Cone Assy NT2
Hydroelectric Project
Page 1 of 3
Date: Jul 24 10:41 AM
