1、 RULES FOR BUILDING AND CLASSING STEEL VESSELS FOR SERVICE ON RIVERS AND INTRACOASTAL WATERWAYS 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
2、 of the Rules for Building and Classing Steel Vessels for Service on Rivers and Intracoastal Waterways, 2017, with 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 construc
3、tion, unless otherwise noted. (See 1-1-4/3.3 of the ABS Rules for Conditions of Classification (Part 1).) PART 4 VESSEL SYSTEMS AND MACHINERY CHAPTER 2 PROPULSION AND MANEUVERING MACHINERY SECTION 3 STEERING GEARS 3 Steering Gears for Passenger Vessels Over 100 Gross Tons or Carrying More than 150 P
4、assengers 3.25 Controls (Add new Subparagraph 4-2-3/3.25.6, as follows:) 3.25.6 System Response Under Failure (1 July 2017) The failures (as listed, but not limited to items in 4-2-3/3.27) likely to cause uncontrolled movements of rudder are to be clearly identified. In the event of detection of suc
5、h 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 methodology may be used to identify the failures. 3.27 Instrumentation and Alarms (Revise Subparagraph 4-2-3/3.27.6, as follows:
6、) 3.27.6 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 power unit reservoir. The operation of this alarm is not to interrupt the power supply circuit. ABSRULES FOR BUILDING AND C
7、LASSING STEEL VESSELS FOR SERVICE ON RIVERS & INTRACOASTAL WATERWAYS .2017 1 Notice No. 1 July 2017 (Add new Subparagraph 4-2-3/3.27.11, as follows:) 3.27.11 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
8、(Add new Subparagraph 4-2-3/3.27.12, as follows:) 3.27.12 Deviation (1 July 2017) Where arrangements discussed in 4-2-3/3.27.7, 4-2-3/3.27.8, 4-2-3/3.27.9 and 4-2-3/3.27.10 can lead to reduced or erroneous system performance of the commanded change in rudder angle, a deviation alarm visible and audi
9、ble 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 autopilot). Deviation alarm may be caused by mechanical, hydraulic or el
10、ectrical failures. See 4-2-3/3.27.7, 4-2-3/3.27.8, 4-2-3/3.27.9 and 4-2-3/3.27.10 for acceptable time limits or angle deviations, as applicable. PART 4 VESSEL SYSTEMS AND MACHINERY CHAPTER 3 PUMPS AND PIPING SYSTEMS SECTION 1 GENERAL 7 General Installation Details (Revise Paragraph 4-3-1/7.21, as fo
11、llows:) 7.21 Hose (1 July 2017) Hose assemblies may be installed between two points where flexibility is required but are not to be subject to torsional deflection (twisting) under normal operating conditions. In general, hose is to be limited to the length necessary to provide for flexibility and f
12、or proper operation of machinery. Burst pressure of the hose is not to be less than four times the relief valve setting. Where the use of non-metallic hose is permitted, the hose materials are to be suitable for the intended service. Hoses for oil service are to be fire resistant and reinforced with
13、 wire braid or other suitable material. Flexible hose assemblies constructed of non-metallic materials intended for installation in piping systems for flammable media and sea water systems where failure may result in flooding, are to be of a fire-resistant type*, except in cases where such hoses are
14、 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 installation of a shutoff valve immediately upstream of a sea water hose does not satisfy the requirement for fire-resistant type ho
15、se. A hose is to be complete with factory assembled end fittings or factory supplied end fittings installed in accordance with manufacturers procedures. The use of non-metallic hoses which are not provided with factory assembled end fittings will be considered for non-combustible and non-toxic, Grou
16、p II piping systems under 5.2 bar (5.3 kgf/cm2, 75 psi) in pipe sizes up to 114.3 mm O.D. (4 in. NPS). Such hoses are to be located in accessible locations and secured by means of at least two stainless-steel hose clamps at each end. Such clamps are to be at least 12 cm (0.5 in.) wide and are not to
17、 be dependent on spring tension to remain fastened. 2 ABSRULES FOR BUILDING AND CLASSING STEEL VESSELS FOR SERVICE ON RIVERS & INTRACOASTAL WATERWAYS .2017 Notice No. 1 July 2017 PART 4 VESSEL SYSTEMS AND MACHINERY CHAPTER 5 ELECTRICAL INSTALLATIONS SECTION 2 SHIPBOARD SYSTEMS 7 Distribution System
18、(Revise Paragraph 4-5-2/7.9, as follows:) 7.9 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 a
19、nd consumers are designed to operate at the higher 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 ot
20、her possible effects, such as additional heat losses 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. 9 Circuit Protection System (Add new Paragraph 4-5-2/9.18, as follows:) 9.18 Harmonic Distortion for Ship Electrica
21、l 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 experienced on the main bus bar a
22、s 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 inspection by the Surveyor. However,
23、 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 ships are to be measured annually under seagoing condition
24、s 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 equipment. An entry showing whi
25、ch 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 ships electrical distribution system or associated consumers by suitably trai
26、ned ships 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 Harmonic Where the electrical dist
27、ribution system on board a ship includes harmonic filters, the system integrator of the distribution system is to show, by calculation, the effect of a failure of a harmonic filter on the level of harmonic distortion experienced. The system integrator of the distribution system is to provide the shi
28、p owner with guidance documenting permitted modes of operation of the electrical distribution system while maintaining harmonic distortion levels within acceptable limits during normal operation as well as following the failure of any combination of harmonic filters. ABSRULES FOR BUILDING AND CLASSI
29、NG STEEL VESSELS FOR SERVICE ON RIVERS & INTRACOASTAL WATERWAYS .2017 3 Notice No. 1 July 2017 The calculation results and validity of the guidance provided are to be verified by the Surveyor during sea trials. 9.18.4 Filter Protection Alarm Arrangements are to be provided to alert the crew in the e
30、vent of activation of the protection of a harmonic filter circuit. A harmonic filter is to be arranged as a three-phase unit with individual protection of each phase. The activation of the protection arrangement in a single phase is to result in automatic disconnection of the complete filter. Additi
31、onally, there is to be installed a current unbalance detection system independent of the overcurrent protection alerting the crew in case of current unbalance. Consideration is to be given to additional protection for the individual capacitor element as (e.g., relief valve or overpressure disconnect
32、or) in order to protect against damage from rupturing. This consideration is to take into account the type of capacitors used. (Revise first paragraph of Paragraph 4-6-2/9.19, as follows:) 9.19 Protection of Harmonic Filter Circuits (1 July 2017) Notwithstanding the requirements of 4-5-2/9.18 above,
33、 harmonic filters circuits shall be protected against overload and short-circuit. An alarm is to be initiated in a continuously manned location in the event of an activation of overload or short-circuit protection. (Following text remains unchanged.) PART 4 VESSEL SYSTEMS AND MACHINERY CHAPTER 5 ELE
34、CTRICAL INSTALLATIONS SECTION 4 MACHINERY AND EQUIPMENT 13 Cables and Wires 13.1 Cable Construction (Revise first paragraph of Subparagraph 4-5-4/13.1.1, as follows:) 13.1.1 General (1 July 2017) Electric cables are to have conductors, insulation and moisture-resistant jackets, in accordance with IE
35、C Publication 60092-350, 60092-352, 60092-353, 60092-354, 60092-360, 60092-370, 60092-376, or IEEE Std. 45. Other recognized marine standards of an equivalent or higher safety level, will also be considered. The tests may be carried out by the manufacturer whose certificate of tests will be acceptab
36、le and is to be submitted upon request from ABS. Network cables are to comply with a recognized industry standard. Cables such as flexible cable, fiber-optic cable, etc., used for special purposes may be accepted provided they are manufactured and tested in accordance with recognized standards accepted by ABS. Conductors are to be of copper and stranded in all sizes. Conductors are not to be less than the following in cross sectional size: (Following text remains unchanged.) 4 ABSRULES FOR BUILDING AND CLASSING STEEL VESSELS FOR SERVICE ON RIVERS & INTRACOASTAL WATERWAYS .2017
