naming conventions for buildings and civil engineering works - CERN

CERN
CH-1211 Geneva 23
Switzerland
the
Large
Hadron
Collider
project
LHC Project Document No.
LHC-PM-QA-207 rev. 1.0
CERN Div./Group or Supplier/Contractor Document No.
AC/TCP
EDMS Document No.
107398
Date: 1999-11-16
Quality Assurance Definition
NAMING CONVENTIONS FOR BUILDINGS
AND CIVIL ENGINEERING WORKS
Abstract
This document provides rules for defining standard abbreviations for the LHC surface
buildings and the various parts of the underground Civil Engineering works. These
abbreviated names will be of prime importance, as they will be the main key to retrieve
all the information of a given building in the different data bases and will provide a
common language for all groups involved in the LHC Collider project, inside and outside
CERN.
This document is based on and supersedes the LHC Project Report 92 on Naming
Conventions for the Large Hadron Collider Project [1].
Prepared by :
Roberto Saban
Checked by :
Quality Assurance
Working Group
Approved by :
Paul Faugeras
Jean-Luc Baldy

LHC Project Document No.
LHC-PM-QA-207 rev. 1.0
Page 2 of 7
History of Changes
Rev. No. Date Pages Description of Changes
1.0 draft
1.0
1999-10-07
1999-11-16
Submitted for approval
First published

LHC Project Document No.
LHC-PM-QA-207 rev. 1.0
Page 3 of 7
Table of Contents
1. PURPOSE ................................................................................................ 4
2. POLICY ................................................................................................... 4
3. SCOPE..................................................................................................... 4
4. RESPONSIBILITIES................................................................................. 4
4.1 PROCEDURE FOR THE CREATION OF ABBREVIATIONS ................................. 4
5. CIVIL ENGINEERING WORKS .................................................................. 4
5.1 ABBREVIATION DEFINITION ..................................................................... 5
5.2 WORKS TYPE .......................................................................................... 6
5.2.1 FIRST CHARACTER........................................................................................ 6
5.2.2 SECOND CHARACTER .................................................................................... 6
5.2.3 THIRD CHARACTER ....................................................................................... 6
5.3 WORKS NUMBERING................................................................................ 7
6. BUILDING NUMBERING........................................................................... 7
7. RELATED DOCUMENTATION .................................................................... 7

LHC Project Document No.
LHC-PM-QA-207 rev. 1.0
Page 4 of 7
1. PURPOSE
2. POLICY
This document provides rules for defining standard abbreviations for the LHC surface
buildings and the various parts of the underground Civil Engineering works. These
abbreviated names will be of prime importance, as they will be the main key to
retrieve all the information of a given building in the different data bases and will
provide a common language for all groups involved in the LHC Collider project, inside
and outside CERN.
This document is based on and supersedes the LHC Project Report 92 on Naming
Conventions for the Large Hadron Collider Project [1].
The increasing size of the colliders and therefore the distribution of the buildings over
vast areas and their numbers has led to their naming using abbreviated names. These
are constructed using a predefined number of alphanumeric characters. Rules are
defined for the choice and the meaning of each character and its position in the name.
The abbreviated names are chosen so that they reflect as closely as possible the
nature and the usage of the building. However, a building or civil engineering works
the usage of which changes from LEP to LHC will retain its original name.
3. SCOPE
The naming conventions described in the present document apply to the LHC surface
buildings, its pits, underground works including the collider tunnel, its injection
transfer lines TI2 from TT60 and TI8 from TT40 and, and its external beam lines.
4. RESPONSIBILITIES
4.1 CHANGE OF NAMING CONVENTIONS
Any change or revision of the naming conventions must be endorsed first by the
Parameter and Layout Committee and by the Technical Coordination Committee. The
revised version must then be approved by the Project Leader or by his Deputy for
Quality Assurance.
4.2 PROCEDURE FOR THE CREATION OF ABBREVIATIONS
New abbreviations for Civil Engineering works are defined by the Infrastructure
Section of the EST/ESI Group, under the responsibility of its Section Leader, who must
inform LHC Project Deputy for Quality Assurance and the Leader of the “Real Estate
Data and Drawings”Section of the Technical Facility Management (ST/TFM) Group.
This latter person must also keep up-to-date the dictionary of Works Types.
5. CIVIL ENGINEERING WORKS
The LHC Collider, [2], will be installed in the existing LEP tunnel and its geometry will
closely follow that of the LEP machine. Most of the infrastructure built for LEP will be
needed for LHC. In particular, the access points to the tunnel and the service areas on
the surface will be concentrated around the existing LEP access points, which are

++++++ +
LHC Project Document No.
LHC-PM-QA-207 rev. 1.0
Page 5 of 7
numbered from 1 to 8, in the clockwise direction starting with Point 1 opposite to the
main entrance of the Meyrin site, see Fig. 1 below.
Gex
Cessy
Echenevex
+++
Point 4
L E P
/ L H C
Point 5
Versonnex
++++++++ ++
+ + ++++++ +
Crozet
Point 3
Chevry
Ségny
Ornex
+++++++++++++++++ +++
Point 6
+ +++++++
+
Collex-Bossy
++++++++
Point 3.2
CERN
Site de Prévessin
Point 7
+++++++++ ++ ++
+++
Sergy
Point 2
Prévessin-Moëns
St Genis-Pouilly
++++++++
TI 2
+++ +++++++++++++++
+++++++++++++
++
++ +++++++++++++++
Point 1.8
S P S
Point 1
CERN
Site de Meyrin
+++++++++++
+++
+
TI 8
Meyrin
+++
+++ +++++ +
Point 8
+++++++++++++
Ferney-Voltaire
+++++
++++++ +++++++++++++++
++++ ++ + +++
Figure 1: Overall map of the LEP/LHC tunnel
The abbreviation system used for the LEP surface buildings and underground works
will therefore be kept for LHC. New works will be identified according to this system,
while existing installations will keep their LEP name, even if their usage for LHC is
different.
5.1 ABBREVIATION DEFINITION
Each name is made of up to six alphanumeric characters, split in two groups of three.
The first group is alphabetic and defines the works type and the second the works
number. This convention is totally conform to the Naming conventions for LEP
buildings and Civil Engineering [3].

LHC Project Document No.
LHC-PM-QA-207 rev. 1.0
Page 6 of 7
5.2 WORKS TYPE
5.2.1 FIRST CHARACTER
The first character of the works type determines the kind of Civil Engineering works,
according to the following list:
P = Pit
R = Ring underground works on the beam path
S = Surface buildings
T = Tunnels and underground galleries
U = Tunnel enlargements, experimental caverns, other underground
works which are not directly on the beam path.
5.2.2 SECOND CHARACTER
It indicates the main usage of the building and underground work, with the following
list:
A = Acceleration and Radio-frequency equipment
B = Equipment for Low Beta section
C = Controls and Communications
D = Material unloading
E = Electricity
F = Fluids
G = Gas for detectors
H = Cryogenics
I = Injection
J = Junction caverns
L = Liaison galleries
M = Magnets and other machine equipment
P = Personnel Protection and Fire Brigade
R = Power Converters
S = Services
T = Beam transfer
U = Ventilation
W = Water
X = Experiments
Y = Access control
Z = Access
Note that some of the letters above have a meaning which is different from the
system definition given in LHC-PM-QA-204.
5.2.3 THIRD CHARACTER
This character is optional and is used either to be more precise on the usage of the
works concerned or to distinguish between different specific parts of that works or to
distinguish two works having a similar usage. Special rules are defined for each case.
This facility is mainly used for electrical buildings and for experimental halls or when
an existing building has to be extended for LHC.

LHC Project Document No.
LHC-PM-QA-207 rev. 1.0
Page 7 of 7
A web page [4] gives the list of civil engineering works abbreviations actually in use.
5.3 WORKS NUMBERING
Up to three digits follow the works type and are used to localize the works concerned.
The first numeric character is the octant number defined as the LEP access point (see
chapter 5, first paragraph). The digit 0 is used for designing the whole LHC site, while
9 is used for zones outside the CERN domain. The second digit allows a more precise
localization with respect to the middle of the octant: this point (the former LEP
collision point) is given the number 5 and the octant is split in equal parts, numbered
from 1 to 9 in the clockwise direction. The last and optional digit can be used for
specifying the floor number of a building for instance or for distinguishing between two
neighboring works in an underground area.
6. BUILDING NUMBERING
The CERN patrimony is kept by the Technical Facility Management Group in the ST
Division. The Civil Engineering Group in the ST Division is responsible for the civil
engineering design and/or works carried out on all CERN sites for the LHC Civil
Engineering Project in collaboration with the architects experts, consultants and
contractors.
The TFM Group keeps an inventory of the buildings and works. These are numbered (4
digits) following ST specific rules. The inventory is accessible via the web pages of the
ST-CE group [4]. This page describes the usage of the building and gives the
correspondence between the ST names and the LEP/LHC names.
7. RELATED DOCUMENTATION
[1] Naming Conventions for the Large Hadron Collider Project, P.Faugeras,
P.Lefèvre, LHC Project Report 92, March 1997.
[2] The Large Hadron Collider, Conceptual Design, The LHC Study Group,
CERN/AC/95-05, 20 October 1995.
[3] Installation du LEP - Plan d'Hygiène et de Sécurité - Règlement de Chantier,
CERN
[4] http://nicewww.cern.ch/st/ce/lhc/ListeStruc.htm