RULES FOR CLASSIFICATION Inland navigation vessels Edition December 2015 Part 4 Systems and components Chapter 1 Machinery and systems The content of this service document is the subject of intellectual property rights reserved by DNV GL AS ("DNV GL"). The user accepts that it is prohibited by anyone else but DNV GL and/or its licensees to offer and/or perform classification, certification and/or verification services, including the issuance of certificates and/or declarations of conformity, wholly or partly, on the basis of and/or pursuant to this document whether free of charge or chargeable, without DNV GL's prior written consent. DNV GL is not responsible for the consequences arising from any use of this document by others. The electronic pdf version of this document, available free of charge from http://www.dnvgl.com, is the officially binding version. DNV GL AS FOREWORD DNV GL rules for classification contain procedural and technical requirements related to obtaining and retaining a class certificate. The rules represent all requirements adopted by the Society as basis for classification. © DNV GL AS December 2015 Any comments may be sent by e-mail to [email protected] If any person suffers loss or damage which is proved to have been caused by any negligent act or omission of DNV GL, then DNV GL shall pay compensation to such person for his proved direct loss or damage. However, the compensation shall not exceed an amount equal to ten times the fee charged for the service in question, provided that the maximum compensation shall never exceed USD 2 million. In this provision "DNV GL" shall mean DNV GL AS, its direct and indirect owners as well as all its affiliates, subsidiaries, directors, officers, employees, agents and any other acting on behalf of DNV GL. CHANGES – CURRENT t n e r This is a new document. r u The rules enter into force 1 July 2016. c - s e g n a h C 1 r e t p a h C 4 t r a P Rules for classification: Inland navigation vessels — DNVGL-RU-INV-Pt4Ch1. Edition December 2015 Page 3 Machinery and systems DNV GL AS s t CONTENTS n e t n Changes – current...................................................................................................... 3 o C Section 1 General requirements................................................................................. 5 1 1 General................................................................................................... 5 r 2 Design and construction......................................................................... 5 e t 3 Arrangement and installation on board.................................................. 8 p a 4 Tests and trials.......................................................................................9 h C Section 2 Propelling and auxiliary machinery...........................................................10 4 1 Symbols................................................................................................ 10 t r 2 Internal combustion engines................................................................ 10 a 3 Main shafting........................................................................................ 22 P 4 Gears and couplings............................................................................. 30 5 Propellers............................................................................................. 34 6 Torsional vibrations.............................................................................. 42 7 Windlasses............................................................................................44 8 Hydraulic system.................................................................................. 47 Section 3 Lateral thrust units...................................................................................50 1 General................................................................................................. 50 2 Materials............................................................................................... 50 3 Thruster tunnel.....................................................................................50 4 Machinery and systems........................................................................ 50 5 Electrical installations...........................................................................51 6 Test in the manufacturer’s works.........................................................51 Section 4 Domestic gas installations........................................................................ 53 1 General................................................................................................. 53 2 Gas installations................................................................................... 53 3 Ventilation system................................................................................ 56 4 Tests and trials.....................................................................................56 Section 5 Tests on board......................................................................................... 58 1 General................................................................................................. 58 2 General requirements for shipboard tests............................................ 58 3 Shipboard tests for machinery..............................................................59 4 Inspection of machinery after river trials............................................. 63 Rules for classification: Inland navigation vessels — DNVGL-RU-INV-Pt4Ch1. Edition December 2015 Page 4 Machinery and systems DNV GL AS SECTION 1 GENERAL REQUIREMENTS 1 n o 1 General i t c 1.1 Application e S This chapter applies to the design, construction, installation, tests and trials of main propulsion and essential 1 (needed for navigation) auxiliary machinery systems and associated equipment, installed on board classed inland navigation vessels, as indicated in each section (1 to 5) of this chapter. r e t p 1.2 Additional requirements a h Additional requirements for machinery are given in Pt.5 and Pt.6, for the assignment of the type and service C notations and additional class notations. 4 t 1.3 Documentation to be submitted r a The drawings and documents requested in the relevant parts of this chapter shall be submitted to the Society P for approval. 2 Design and construction 2.1 General The machinery shall be of a design and construction for the service for which they are intended and shall be so installed and protected as to reduce to a minimum any danger to persons on board, due regard being paid to moving parts, hot surfaces and other hazards. The design shall take into consideration the materials used in the construction, the intended use of the equipment, the working conditions to which it will be subjected and the environmental conditions on board. Engines and their ancillaries shall be designed, built and installed in accordance with best practice. 2.2 Materials, welding and testing 2.2.1 General Materials, welding and testing procedures shall be in accordance with the requirements of Pt.2 and this chapter. In addition, for machinery components fabricated by welding, the requirements given in [2.2.2] apply. 2.2.2 Welded machinery components Welding processes shall be approved and welders certified by the Society in accordance with Pt.2. References to welding procedures adopted shall be clearly indicated on the plans submitted for approval. Joints transmitting loads shall be either: — full penetration butt-joints welded on both sides, except when an equivalent procedure is approved, or — full penetration T- or cruciform joints For joints between plates having a difference in thickness greater than 3 mm, a taper having a length of not less than 4 times the difference in thickness is required. Depending on the type of stress to which the joint is subjected, a taper equal to three times the difference in thickness may be accepted. T-joints on scalloped edges are not permitted. Rules for classification: Inland navigation vessels — DNVGL-RU-INV-Pt4Ch1. Edition December 2015 Page 5 Machinery and systems DNV GL AS Lap-joints and T-joints subjected to tensile stresses shall have a throat size of fillet welds equal to 0.7 times 1 the thickness of the thinner plate on both sides. In the case of welded structures including cast pieces, the latter shall be cast with appropriate extensions to n o permit connection, through butt-welded joints, to the surrounding structures, and to allow any radiographic i and ultrasonic examinations to be easily carried out. t c Where required, preheating and stress relieving treatments shall be performed according to the welding e procedure specification. S 1 2.3 Vibrations r e Special consideration (see Sec.2 [6]) shall be given to the design, construction and installation of propulsion t machinery systems and auxiliary machinery so that any mode of their vibrations shall not cause undue p stresses in this machinery in the normal operating ranges. a h C 2.4 Operation in inclined position 4 Main propulsion machinery and all auxiliary machinery essential to the propulsion and the safety of the t r vessel are, as fitted in the vessel, to be designed to operate when the vessel is upright and when inclined a at any angle of list either way and trim by bow or stern as stated in Table 1. Machinery with a horizontal P rotation axis is generally to be fitted on board with such axis arranged alongships. If this is not possible, the manufacturer shall be informed at the time the machinery is ordered. Table