1、 STD-ITU-T RECMN LeZD-ENGL 177b H q8bZ571 Ub327bb T57 = INTERNATIONAL TELECOMMUNICATION UNION ITU-T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU L.20 (I 0196) SERIES L: CONSTRUCTION, INSTALLATION AND PROTECTION OF CABLES AND OTHER ELEMENTS OF OUTSIDE PLANT Creation of a fire security code for tel
2、ecommunication facilities ITU-T Recommendation L.20 (Previously CCITT Recommendation) ITU-T L-SERIES RECOMMENDATIONS CONSTRUCTION, INSTALLATION AND PROTECTION OF CABLES AND OTHER ELEMENTS OF OUTSIDE PLANT For further details, please refer to ITU-T List of Recommendations. FOREWORD The IT-T (Telecomm
3、unication Standardization Sector) is a permanent organ of the International Telecommunication Union (IT). The IT-T is responsible for studying technical, operating and tariff questions and issuing Recommen- dations on them with a view to standardizing telecommunications on a worldwide basis. The Wor
4、ld Telecommunication Standardization Conference (WTSC), which meets every four years, establishes the topics for study by the ITU-T Study Groups which, in their turn, produce Recommendations on these topics. The approval of Recommendations by the Members of the IT-T is covered by the procedure laid
5、down in WTSC Resolution No. 1 (Helsinki, March 1-12, 1993). IT-T Recommendation L.20, was prepared by ITU-T Study Group 6 (1993-1996) and was approved by the WTSC (Geneva, October 9-18, 1996). NOTES 1. telecommunication administration and a recognized operating agency. In this Recommendation, the ex
6、pression “Administration” is used for conciseness to indicate both a 2. follows: The status of annexes and appendices attached to the Series L Recommendations should be interpreted as - - an annex to a Recommendation forms an integral part of the Recommendation; an appendix to a Recommendation does
7、not form part of the Recommendation and only provides some complementary explanation or information specific to that Recommendation. O ITU 1997 All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying
8、 and microfilm, without permission in writing from the IT. Recommendation L.20 (10/96) 1 STD-ITU-T RECMN L-20-ENGL L77b M 48b259L Ub329b9 7bb m Recommendation L.20 CREATION OF A FIRE SECURITY CODE FOR TELECOMMUNICATION FACILITIES (Geneva, 1996) Introduction in most countries, there are both national
9、 and provincial as well as other fire regulation codes related to buildings for the prevention of the spread of fire. Some companies operating in countries where the fire regulation codes may or may not apply do not have a specific code for their internal use in order to unifi, optimize and adjust t
10、heir needs to provide adequate fire protection measures. This situation will increase the work of the management project group since it will be necessary to compile and evaluate national and international fire regulation codes for the design and conditioning of buildings destined to house telecommun
11、ication equipment and facilities and for the training of personnel. The adoption of adequate fire prevention measures can lessen the risk to life and reduce the chances of a serious disruption to the telecommunication network. The fire department of a civil administration needs information on any te
12、lecommunication building concerning access, local fire fighting facilities, emergency power supplies, water supplies in tall buildings, where to disconnect the public power supplies, the presence of hazardous materials and the importance of minimizing water damage to telecommunication equipment. It
13、is recommended For existing buildings and the design and construction of new buildings, housing telecommunications installations administrations should create an internal fire security code, according to the anticipated specific use of each building, containing the minimum guidelines for fire safety
14、 and protection against fire. The code should be made starting with an analysis of each countrys national, provincial or other fire regulation codes. The basic structure will be the following: - documentation; - - - basic design guidelines to be put into practice for building construction; basic des
15、ign guidelines to be put into practice for the construction and installation of equipment; measures to be put into practice for reducing the time between ignition and effective fire fighting in buildings; - fire detection and alarm systems; - fixed fire-extinguishing systems; - portable fire extingu
16、ishers; - emergency lighting; - fire safety signs; - organization and training of personnel in fire instruction and drills for evacuation and fire fighting in the case of a fire; disaster recovery plan covering the hazard assessment of deposits produced by a fire together with the precautions necess
17、ary for their safe removal; temporary service for emergency and other essential services; - - Recommendation L.20 (10196) 1 STD*ITU-T RECMN L-20-ENGL L97b D 48b259L Ob32970 i88 - agreement with the civil administration fire department for a training plan for fire fighting, to be implemented in each
18、building, containing the steps to be followed for fire extinction and of the resources to be used; - fire statistic reports (for example, performance of different materials in the case of a fire). The design of new buildings and the adaptation of existing buildings should comply with the following c
19、onditions: - - - - to rapidly detect any fire should it break out; to minimize fire spread in each building and to avoid the spread of fire from one building to another; to provide safe exits for the easy evacuation of all personnel in case offre; to provide easy access for fire fighting and fire ex
20、tinction; - to provide fire instruction and carry out evacuation exercises so that all personnel know what to do in case of fire. 2 Recommendation L.20 (10/96) STD-ITU-T RECMN L.20-ENGL 179b 4b2571 Ob32771 314 m Series A Series B Series C Series D Series E Series F Series G Series H Series I Series
21、J Series IS Series L Series M Series N Series O Series P Series Q Series R Series S Series T Series U Series V Series X Series Z ITU-T RECOMMENDATIONS SERIES Organization of the work of the ITU-T Means of expression: definitions, symbols, classification General telecommunication statistics General t
22、ariff principles Overall network operation, telephone service, service operation and human factors Non-telephone telecommunication services Transmission systems and media, digital systems and networks Audiovisual and multimedia systems Integrated services digital network Transmission of television,
23、sound programme and other multimedia signals Protection against interference Construction, installation and protection of cables and other elements of outside plant Maintenance: international transmission systems, telephone circuits, telegraphy, facsimile and leased circuits Maintenance: internation
24、al sound programme and television transmission circuits Specifications of measuring equipment Telephone transmission quality, telephone installations, local line networks Switching and signalling Telegraph transmission Telegraph services terminal equipment Terminals for telematic services Telegraph switching Data communication over the telephone network Data networks and open system communication Programming languages
