ITU-T L 81-2009 Monitoring systems for outside plant facilities (Study Group 15)《交流电流引起的腐蚀》.pdf
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1、 International Telecommunication Union ITU-T L.81TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (11/2009) SERIES L: CONSTRUCTION, INSTALLATION AND PROTECTION OF CABLES AND OTHER ELEMENTS OF OUTSIDE PLANT Monitoring systems for outside plant facilities Recommendation ITU-T L.81 Rec. ITU-T L.81 (11/2
2、009) i Recommendation ITU-T L.81 Monitoring systems for outside plant facilities Summary Natural disasters such as those caused by strong wind, flood, landslide, and earthquake happen more frequently than ever and their damage is increasing. Human-caused disasters such as those caused by fire, explo
3、sion, and collapse also happen on a large scale. Outside plant facilities including telecommunication buildings are exposed to these disasters and may be affected adversely, which implies that preventive measures are needed. Recommendation ITU-T L.81 deals with monitoring systems to mitigate damage
4、and to secure outside plant facilities against disasters. History Edition Recommendation Approval Study Group 1.0 ITU-T L.81 2009-11-13 15 Keywords Disaster, emergency management, monitoring system, structural health monitoring (SHM), wireless sensor network (WSN). ii Rec. ITU-T L.81 (11/2009) FOREW
5、ORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications, information and communication technologies (ICTs). The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is responsible for studying
6、technical, operating and tariff questions and issuing Recommendations on them with a view to standardizing telecommunications on a worldwide basis. The World Telecommunication Standardization Assembly (WTSA), which meets every four years, establishes the topics for study by the ITU-T study groups wh
7、ich, in turn, produce Recommendations on these topics. The approval of ITU-T Recommendations is covered by the procedure laid down in WTSA Resolution 1. In some areas of information technology which fall within ITU-Ts purview, the necessary standards are prepared on a collaborative basis with ISO an
8、d IEC. NOTE In this Recommendation, the expression “Administration“ is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. Compliance with this Recommendation is voluntary. However, the Recommendation may contain certain mandatory provisions (t
9、o ensure e.g., interoperability or applicability) and compliance with the Recommendation is achieved when all of these mandatory provisions are met. The words “shall“ or some other obligatory language such as “must“ and the negative equivalents are used to express requirements. The use of such words
10、 does not suggest that compliance with the Recommendation is required of any party. INTELLECTUAL PROPERTY RIGHTS ITU draws attention to the possibility that the practice or implementation of this Recommendation may involve the use of a claimed Intellectual Property Right. ITU takes no position conce
11、rning the evidence, validity or applicability of claimed Intellectual Property Rights, whether asserted by ITU members or others outside of the Recommendation development process. As of the date of approval of this Recommendation, ITU had not received notice of intellectual property, protected by pa
12、tents, which may be required to implement this Recommendation. However, implementers are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database at http:/www.itu.int/ITU-T/ipr/. ITU 2010 All rights reserved. No part of this pub
13、lication may be reproduced, by any means whatsoever, without the prior written permission of ITU. Rec. ITU-T L.81 (11/2009) iii CONTENTS Page 1 Scope 1 2 References. 1 3 Definitions 1 3.1 Terms defined elsewhere 1 3.2 Terms defined in this Recommendation . 1 4 Abbreviations and acronyms 2 5 Conventi
14、ons 2 6 Disasters and emergency management for outside plant facilities . 2 6.1 Typical disasters . 2 6.2 Emergency management 2 6.3 Emergency management programs for outside plant facilities 3 6.4 Monitoring flow diagram . 4 7 Monitoring system for outside plant facilities 4 7.1 Objectives . 4 7.2
15、General requirements 5 7.3 Design considerations . 5 Appendix I Korean experience . 8 I.1 Monitoring system for outside plant facilities using WSN 8 I.2 Examples 8 Bibliography. 10 Rec. ITU-T L.81 (11/2009) 1 Recommendation ITU-T L.81 Monitoring systems for outside plant facilities 1 Scope This Reco
16、mmendation: describes typical emergency management for outside plant facilities; describes monitoring systems for outside plant facilities using wireless or wired network; provides an overview of disaster monitoring systems for outside plant facilities; provides design considerations for disaster mo
17、nitoring systems for outside plant facilities. It should be noted that fire disasters are not considered in this Recommendation because disaster management concerning fire is described in ITU-T L.20, ITU-T L.21 and ITU-T L.22. 2 References The following ITU-T Recommendations and other references con
18、tain provisions which, through reference in this text, constitute provisions of this Recommendation. At the time of publication, the editions indicated were valid. All Recommendations and other references are subject to revision; users of this Recommendation are therefore encouraged to investigate t
19、he possibility of applying the most recent edition of the Recommendations and other references listed below. A list of the currently valid ITU-T Recommendations is regularly published. The reference to a document within this Recommendation does not give it, as a stand-alone document, the status of a
20、 Recommendation. ITU-T L.11 Recommendation ITU-T L.11 (1988), Joint use of tunnels by pipelines and telecommunication cables, and the standardization of underground duct plans. ITU-T L.20 Recommendation ITU-T L.20 (1996), Creation of a fire security code for telecommunication facilities. ITU-T L.21
21、Recommendation ITU-T L.21 (1996), Fire detection and alarm systems, detector and sounder devices. ITU-T L.22 Recommendation ITU-T L.22 (1996), Fire protection. ITU-T Y.1271 Recommendation ITU-T Y.1271 (2004), Framework(s) on network requirements and capabilities to support emergency telecommunicatio
22、ns over evolving circuit-switched and packet-switched networks. 3 Definitions 3.1 Terms defined elsewhere This Recommendation does not use any terms defined elsewhere. 3.2 Terms defined in this Recommendation This Recommendation defines the following terms: 3.2.1 disaster: Disasters are characterize
23、d by the scope of an emergency. An emergency becomes a disaster when it exceeds the capability of the local resources to manage it. Disasters often result in great damage, loss, or destruction. 3.2.2 early warning: The provision of timely and effective information, through identified institutions, t
24、hat allows individuals exposed to a hazard to take action to avoid or reduce their risk and prepare for effective response. 2 Rec. ITU-T L.81 (11/2009) 3.2.3 emergency: An emergency is a sudden, urgent, usually unexpected occurrence or event requiring immediate action. 3.2.4 structural health monito
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