1
2
Ducts identification description
1- GENERALITIES
The duct identification, type and network, is given by a colour sticker
(equilateral triangle, side 150 mm ) including a black alphanumerical
reference in the middle.
According to LHC identification code , general identification for ducts is
“UG” followed by a group of characters. The reference UG will be not
be included in the triangle reference.
Triangle colour and reference for ducts located, either in the surface or
underground areas, are detailed in this document.
Number of stickers has to be sufficient to identify correctly networks
whatever the position of an observer in the concerned areas.
2.1 Général aspect of a sticker, and triangle background colour
2.1.1 First character
This character is relative to the assignment of the network with the following
possibilities:
 D = smoke extraction
 E = general extraction
 P = supply
 S = pressurisation
 R = return air
 T = transfert
 Z = gaz extraction
3
2.2 Second character
This character defines duct construction, see joined table annexe 1
2.3 Third character
This character indicates network affectation:
1 = machine tunnel
2 = accessible area
3 = experimental area (outside)
4 = experimental area (inside)
5 = accessible area
6 = survival area
9 = SGX building
10 = SU building
11 = SUX building
12 = SA, SD, SDH, SDX, SF, SMI/SDI, building
13 = SX building
15 = SH, SHM building
2.4 Fourth character
This character indicates the direction of the network in relation to the
LHC ring
 D = right (clock wise)
 L = left (contra-clock wise)
 C = to the centre
For networks not linked to the LHC machine or experiments areas,
surface building for example, Fourth character is not used.
In case of multiple similar networks, survival areas for instance, a fifth
character is added, it indicates the relative position to the middle of
the LHC machine centre, from 1 to 3 . (1 will be the closest to the
centre, 3 the Fareast) .
A serial of typical stickers are detailed in annexe 2.
4
Annex 1
SECOND CHARACTER DESCRIPTION
CHAR.
DUCT DESCRIPTION
DOUBLE SIMPLE
SKIN
SKIN
A
SUPPLY: MACHINE TUNNEL , EXPERIMENTAL ZONE UX25
X
B
SUPPLY: ACCESSIBLE ZONES, EXP ZONES Ø<1000
X
C
EXTRACTIO: MACHINE TUNNEL, EXPERIMENTAL ZONE
X
D
SUPPLY: SURVIVAL ZONE ( OUTSIDE CONCRETE MODULE )
X
F
SMOKE EXTRACT: ACCESSIBLE ZONE
X
G
SUPPLY: MACHINE TUNNEL
X
H
SUPPLY: EXPERIMENTAL ZONE Ø>1000
J
GENERAL EXTRACT : EXPERIMENTAL ZONE
X
K
GAS EXTRAT
X
L
SUPPLY: ACCESSIBLE ZONE; EXPERIMENTAL ZONE
X
M
SUPPLY OR EXTRACT ALL ZONES
X
N
SUPPLY OR EXTRACT ALL ZONES 400°C/2H
X
O
SUPPLY ZONES TI
X
T
HOUSING WITH FIRE RESISTANT PANELS 400°C/2H INCL FRAME
X
U
SUPPLY : DETECTORS HIGH PRESSURE NETWORKS
X
V
EXTRACT EXPERIMENTAL ZONE SANDWICH PANEL HOUSING
X
W
EXTRACT : AIR OR GAZ (DETECTORS NETWORKS)
X
X
SUPPLY OR EXTRACT FLEXIBLE DUCT
X
X
X
5
ANNEX 2
EXEMPLE OF STICKERS FOR LHC DUCTWORK IDENTIFICATION
15
0m
m
PM11
EM11
SUX supply
PB4D1
UX supply
D1 direction
PM12
SUX extract
EM12
SDX supply
EJ4D2
UX extraction
D2 direction
SD6C
PB2G
Supply accessible areas
contra-clock wise direction
ZK9
SGX building gaz extraction
DF 2D
Smoke extraction accessible areas
clock wise direction
Pressurisation network
SDX extract