NAMING CONVENTIONS FOR BUILDINGS AND CIVIL ENGINEERING WORKS

Transcription

1 CERN CH-1211 Geneva 23 Switzerland the Large Hadron Collider project LHC Project Document No. CERN Div./Group or Supplier/Contractor Document No. AC/TCP EDMS Document No Date: 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

2 Page 2 of 7 History of Changes Rev. No. Date Pages Description of Changes 1.0 draft Submitted for approval First published

3 Page 3 of 7 Table of Contents 1. PURPOSE POLICY SCOPE RESPONSIBILITIES PROCEDURE FOR THE CREATION OF ABBREVIATIONS CIVIL ENGINEERING WORKS ABBREVIATION DEFINITION WORKS TYPE FIRST CHARACTER SECOND CHARACTER THIRD CHARACTER WORKS NUMBERING BUILDING NUMBERING RELATED DOCUMENTATION... 7

4 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

5 + LHC Project Document No. 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 Collex-Bossy ++ Point 3.2 CERN Site de Prévessin Point Sergy Point 2 Prévessin-Moëns St Genis-Pouilly ++ TI 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].

6 Page 6 of WORKS TYPE 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 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 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.

7 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 [2] The Large Hadron Collider, Conceptual Design, The LHC Study Group, CERN/AC/95-05, 20 October [3] Installation du LEP - Plan d'hygiène et de Sécurité - Règlement de Chantier, CERN [4]