CCS关于关注406 MHz卫星应急示位标工作频率变更的通知

Form: RWPRR401-B C C S通函Circular中国船级社（2011）通函第52号总第116号2011年6 月17 日（共4 页）发：总部有关部门、各分社、本社验船师，相关认可供方公司关于关注406 MHz卫星应急示位标工作频率变更的通知多年来，随着406 MHz卫星应急示位标的广泛使用，数量持续、迅速增长，其通信频道日趋饱和状态（参见附件1）。

为使信标载波频率在406.0-406.1MHz 频段内适当分布，以保证不会超出每个信道的容量，COSPAS-SARSAT制订了一个406MHz信道分配计划（C/S T.012）。

该计划规定了在未来数年中提交型式认可试验的新型信标的工作频率。

IMO以MSC.120（74）号决议对406 MHz卫星应急示位标EPIRB的性能标准（A.810(19)号决议）进行了修订，明确了信标载波频率将会改变。

我社曾以技术管理处(2002年)第005号总第055号通函提请相关各方关注此事。

COSPAS-SARSAT每年对406 MHz卫星应急示位标的数量进行评估，并据此对406MHz信道分配计划进行修订。

406MHz信道分配计划的具体内容可登录COSPAS-SARSAT网站查询。

依据COSPAS-SARSAT2010年10月发布的406MHz信道分配计划（参见附件2）， COSPAS-SARSAT系统陆续开放的频道有：CHANNEL B: 406.025 MHz (1982-2002.1.1.)CHANNEL C：406.028 MHz (2000.1.1 - 2007.1.1)CHANNEL F：406.037 MHz (2004.1.1 - 2012.1.1)CHANNEL G：406.040 MHz (2010.1.1 –待定)其中，406.025 MHz 频道从2002.1.1起，对新申请型式认可的示位标关闭，以此类推。

由于有些单位或人员对406MHz卫星EPIRB的工作频率变更的情况不了解，造成在审核、检测、发证等环节产生误解。

基于上述情况，特提请有关方面对406MHz卫星EPIRB进行型式认可、审核、检测时注意：一、我社验船师在对EPIRB产品进行型式认可时1、确认EPIRB业经COSPAS-SARSAT型式认可，并持有认可证书；2、依据上述频段适用的时段分配，确认申请认可的EPIRB工作频率与COSPAS-SARSAT认可证书中规定的相同；二、我社验船师在进行新造船初次检验或对营运船进行无线电设备定期检验时，应根据上述要求，对检测公司检测设备的正确使用和检测试验证书的正确性进行现场监控和确认。

三、经本社认可的无线电检测公司，应对现有的406 MHz示位标检测设备予以核查，对不能满足对所述应急示位标的新旧工作频率：（406.025 MHz、406.028 MHz、406.037 MHz和406.040 MHz）检测需要的；须立即进行升级和更新，我社的供方审核员在对无线电检测公司进行认可审核时，应对此重点关注及核查。

本通函自发布之日起实施。

附件：1、全球406 卫星示位标配备数量递增图；2、COSPAS-SARSAT发布的406MHz信道分配计划。

Form: RWPRR401-B C C SCircularChina Classification Society（2011）Circ.No.52 Total No.1167 June 2011 (Total of 2+2 pages)To: Relevant departments of CCS Headquarters, CCS Branch & office, CCS Surveyor, SR CompanyNotice on the change of 406 MHz EPIRB channelThe quantity of 406MHz EPIRB is on continuous growth as the a. m. beacon is widely used in the world in recent years, and the communication traffic on the frequency channel is approaching peak capacity and exhibiting a saturation tendency.COSPAS-SARSAT has developed a CHANNEL ASSIGNMENT PLAN (C/S T.012) for the 406 beacon，to ensure that the number of 406MHz Beacons is suitable for operation in the given channel and does not generate a traffic load in excess of channel capacity. This plan specifies that the carrier frequency of new beacon models to be type approved in the future. The performance standard for 406 MHz specified by IMO Resolution A.810(19) has been amended by Resolution MSC.120(74), which defines that the carrier frequency of beacon is to be changed. This Society had noted this to relevant parties by Circular No.(2002)005/TotalNo.055” issued by CCS Technical Management Dept.The quantity of the operating /activated 406 MHz EPIRB will be evaluated by COSPAS—SARSAT, and the Channel Assignment Plan will be amended as required on an annual basis. The details of the a.m. Plan can be found on the website of the COSPAS—SARSAT. The following carrier frequency channels have been opened to public now according to the a.m. Plan issued in Oct. 2010 by COSPAS—SARSAT (see Attachment 2):CHANNEL B: 406.025MHz (1982—2002.1.1) ,CHANNEL C: 406.028MHz (2000.1.1—2007.1.1) ,CHANNEL F: 406.037MHz (2004.1.1—2012.1.1) ,CHANNEL G: 406.040MHz (2010.1.1—pending) ,Please be noted that from 1 Jan. 2002, the CHANNEL B ( 406.025MHz) has been closed for type approval of new beacon models, and the rest may be deduced by analogy.It is found that some misunderstandings on the beacon’s frequency channel change occurred when some work units or staff carried out the beacon type approval, site audit and survey, as well as the beacon test. In view of this, our Society hereby raises the key points (for carrying out the beacon type approval, site audit and survey, test) to relevant parties on the change of beacon frequency channel as follows:1. Arrangement to the beacon applying for CCS type approvalCCS surveyors shall confirm that the beacon has been type approved and certificated by COSPAS—SARSAT, and based on the Channel Assignment Plan, shall check that the frequency channel of the beacon applying for approval is same as what is specified on the approval certificate of COSPAS—SARSAT.2. When carrying out the beacon checking during the initial survey of new building or periodical surveys of ships in service, our surveyor shall pay attention to the a.m. requirements (change of beacon’s frequency channel) to confirm on site the correctness of test facilities and the test report /certificate of the authorized body.3. The current test equipment for 406MHz EPIRB should be checked by SR companies approved by this society, if not compliant with the test for a.m. frequency (406.025MHz, 406.028 MHz, 406.037 MHz and 406.040 MHz) as mentioned, it should be updated or renewed at once. During the approval audits to SR companies, this society’s auditor should pay significant attention and checked to the above requirement.This circular will enter into force from the date of issue.For any questions from implementation, please contact with the relevant departments of this Headquarters, i.e.: Classed Newbuildings Department, Classed ship in Service Department or Technology Management Department.Attachment：1.The forecast of 406MHz EPIRB population.2. “CHANNEL ASSIGNMENT TABLE to 406 MHz Beacon” issued by COSPAS—SARSAT.附件1.406 MHz卫星应急示位标配备数量递增图1 / 1。