ABS 62 NOTICE 1-2017 GUIDE FOR BUILDING AND CLASSING YACHTS 2017.pdf
《ABS 62 NOTICE 1-2017 GUIDE FOR BUILDING AND CLASSING YACHTS 2017.pdf》由会员分享,可在线阅读,更多相关《ABS 62 NOTICE 1-2017 GUIDE FOR BUILDING AND CLASSING YACHTS 2017.pdf(6页珍藏版)》请在麦多课文档分享上搜索。
1、 GUIDE FOR BUILDING AND CLASSING YACHTS 2017 NOTICE NO. 1 JULY 2017 The following Rule Changes were approved by the ABS Rules Committee on 30 May 2017 and become EFFECTIVE AS OF 1 JULY 2017. (See http:/www.eagle.org for the consolidated version of the Guide for Building and Classing Yachts 2016, wit
2、h all Notices and Corrigenda incorporated.) Notes - The date in the parentheses means the date that the Rule becomes effective for new construction based on the contract date for construction, unless otherwise noted. (See 1-1-4/3.3 of the ABS Rules for Conditions of Classification (Part 1).) PART 4
3、VESSEL SYSTEMS AND MACHINERY CHAPTER 3 PROPULSION AND MANEUVERING MACHINERY SECTION 3 STEERING GEAR 11 Steering Gear Control System 11.3 General (Add new Subparagraph 4-3-3/11.3.5, as follows:) 11.3.5 System Response Under Failure (1 July 2017) The failures (as listed, but not limited to items in 4-
4、3-3/11.9) likely to cause uncontrolled movements of rudder are to be clearly identified. In the event of detection of such failure, the rudder should stop in the current position. Alternatively, the rudder may be set to return to the midship/neutral position. Failure Mode and Effect Analysis methodo
5、logy may be used to identify the failures. 11.9 Instrumentation and Alarms (Revise Subparagraph 4-3-3/11.9.7, as follows:) 11.9.7 Low Oil Level Alarm (1 July 2017) A visual and audible alarm is to be given on the navigation bridge and engine room control station to indicate a low oil level in any po
6、wer unit reservoir. The operation of this alarm is not to interrupt the power supply circuit. (Add new Subparagraph 4-3-3/11.9.12, as follows:) 11.9.12 Earth Fault (1 July 2017) A visual and audible alarm is to be given on the navigation bridge to indicate an earth fault on AC and DC circuits. ABSGU
7、IDE FOR BUILDING AND CLASSING YACHTS .2017 1 Notice No. 1 July 2017 (Add new Subparagraph 4-3-3/11.9.13, as follows:) 11.9.13 Deviation (1 July 2017) Where arrangements discussed in 4-3-3/11.9.8, 4-3-3/11.9.9, 4-3-3/11.9.10 and 4-3-3/11.9.11 can lead to reduced or erroneous system performance of the
8、 commanded change in rudder angle, a deviation alarm visible and audible at the navigating bridge shall be initiated if the rudders actual position does not reach the set point within acceptable time limits for the closed loop control systems (e.g., follow-up control, computer based systems, and aut
9、opilot). Deviation alarm may be caused by mechanical, hydraulic or electrical failures. See 4-3-3/11.9.8, 4-3-3/11.9.9, 4-3-3/11.9.10 and 4-3-3/11.9.11 for acceptable time limits or angle deviations, as applicable. PART 4 VESSEL SYSTEMS AND MACHINERY CHAPTER 4 PUMPS AND PIPING SYSTEMS SECTION 1 GENE
10、RAL 9 General Installation Details 9.19 Flexible Hoses 9.19.3 Design and Construction (Revise Item 4-4-1/9.19.3(c), as follows:) 9.19.3(c) Fire Resistance (1 July 2017). Flexible hose assemblies constructed of non-metallic materials intended for installation in piping systems for flammable media and
11、 sea water systems where failure may result in flooding are to be of a fire-resistant type*, except in cases where such hoses are installed on open decks having no fire risk, and not used for fuel oil lines. Fire resistance is to be demonstrated by testing to ISO 15540 and ISO 15541. * Note: The ins
12、tallation of a shutoff valve immediately upstream of a sea water hose does not satisfy the requirement for fire resistant type hose. PART 4 VESSEL SYSTEMS AND MACHINERY CHAPTER 6 ELECTRICAL INSTALLATIONS SECTION 2 SHIPBOARD SYSTEMS 7 Distribution System (Revise Paragraph 4-6-2/7.9, as follows:) 7.9
13、Harmonics (1 July 2017) The total harmonic distortion (THD) in the voltage waveform in the distribution systems is not to exceed 8% and any single order harmonics not to exceed 5%. Other higher values may be accepted provided the distribution equipment and consumers are designed to operate at the hi
14、gher limits. This relaxation on THD limits is to be documented (harmonic distortion calculation report) and made available on board as a reference for the Surveyor at each periodical survey.Where higher values of harmonic distortion are expected, any other possible effects, such as additional heat l
15、osses in machines, network resonances, errors in control and monitoring systems are to be considered. See also 4-6-2/9.18 and 4-6-2/9.19. 2 ABSGUIDE FOR BUILDING AND CLASSING YACHTS .2017 Notice No. 1 July 2017 9 Circuit Protection System (Add new Paragraph 4-6-2/9.18, as follows:) 9.18 Harmonic Dis
16、tortion for Yacht Electrical Distribution System including Harmonic Filters (1 July 2017) 9.18.1 Monitoring Where the electrical distribution system on board a ship includes harmonic filters, such ships are to be fitted with facilities to continuously monitor the levels of harmonic distortion experi
17、enced on the main bus bar as well as alert the crew should the level of harmonic distortion exceed the acceptable limits. Where the engine room is provided with automation systems, this reading is to be logged electronically, otherwise it is to be recorded in the engine log book for future inspectio
18、n by the Surveyor. However, harmonic filters installed for single application frequency drives such as pump motors may be excluded from the requirements of this section. 9.18.2 Measurement As a minimum, harmonic distortion levels of main bus bar on board such existing yachts are to be measured annua
19、lly under seagoing conditions as close to the periodical machinery survey as possible so as to give a clear representation of the condition of the entire plant to the Surveyor. Harmonic distortion readings are to be carried out when the greatest amount of distortion is indicated by the measuring equ
20、ipment. An entry showing which equipment was running and/or filters in service is to be recorded in the log so this can be replicated for the next periodical survey. Harmonic distortion levels are also to be measured following any modification to the yachts electrical distribution system or associat
21、ed consumers by suitably trained yachts personnel or from a qualified outside source. Records of all the above measurements are to be made available to the surveyor at each periodical survey in accordance with the ABS Rules for Survey After Construction (Part 7). 9.18.3 Validation of Calculated Harm
- 1.请仔细阅读文档,确保文档完整性,对于不预览、不比对内容而直接下载带来的问题本站不予受理。
- 2.下载的文档,不会出现我们的网址水印。
- 3、该文档所得收入(下载+内容+预览)归上传者、原创作者;如果您是本文档原作者,请点此认领!既往收益都归您。
下载文档到电脑,查找使用更方便
5000 积分 0人已下载
下载 | 加入VIP,交流精品资源 |
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- ABS62NOTICE12017GUIDEFORBUILDINGANDCLASSINGYACHTS2017PDF

链接地址:http://www.mydoc123.com/p-400930.html