DC cable reroutingComparison of 3 options
Goals• Remove cable trays above Splitter magnets• Exchange and re-route PVC insulated cables by
PVC-free ones
MDLV_240104
MDLV_240104
All the DC cables feeding the magnets upstream MDLV_240104 to be exchanged
Current state
• 2 cable trays: OD115 and OD 116• 32/34 DC cables must be exchanged in OD115• 14/32 DC cables must be exchanged in OD116
OD 115
OD 116
OD 115
OD 116
To be exchangedremaining
3 options
Cable junction
AB
COption Dose rate Extra length
A 100 uSv 0 m
B 15 uSv 40 m
C 1 uSv 130 m
MDLV_240104
MDLV_240104
Option A
OPTION B
DANS LA SECTION DE 8m, BIEN AVANT LES PREMIERS MOUVEMENTS D’ECHELLES
Option C: add one rack per cable tray in TA801
Il existe déjà 4 RAL ou la jonction est faite entre câbles contrôles venant du BA80 et allant en TCC2 ou TDC2.
Les câbles entrant et sortant passent à travers le caillebotis entre celui-ci et l’échelle supérieure
3 options: dose costOperation Duration (min) # people A B CDisconnect 1 cable 3 1 690 690 690
Cut 1 cable 3 1 230 34.5 2.3
Remove 10 m cable 10 2 3833 5367 6862
Install 10 m cable 30 2 11500 16100 20585
Reconnect 1 cable 15 1 3450 3450 3450
Make new cable junction 30 2
4600 690 46
TOTAL IN uSv 24303 26331 31635
• Cable trays modification not included• The best solution seems to be option A• Removing and pulling cables is time
consuming and hence highly dose costing
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