Part 3 Structures, equipment Chapter 1 Hull design and construction, general

Transcription

1 RULES FOR CLASSIFICATION Inland navigation vessels Edition December 2015 Part 3 Structures, equipment Chapter 1 Hull design and construction, general The content of this service document is the subject of intellectual property rights reserved by ("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 is the officially binding version.

2 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. December 2015 Any comments may be sent by to rules@dnvgl.com 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, 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.

3 CHANGES CURRENT This is a new document. The rules enter into force 1 July Part 3 Chapter 1 Changes - current Rules for classification: Inland navigation vessels DNVGL-RU-INV-Pt3Ch1. Edition December 2015 Page 3

4 CONTENTS Changes current...3 Section 1 General Symbols and definitions Application...8 Section 2 Documentation Documentation requirements...10 Part 3 Chapter 1 Contents Rules for classification: Inland navigation vessels DNVGL-RU-INV-Pt3Ch1. Edition December 2015 Page 4

5 SECTION 1 GENERAL 1 Symbols and definitions 1.1 Symbols and units Symbols L = rule length [m], defined in [1.2.1] B = breadth [m], defined in [1.2.2] D = depth [m], defined in [1.2.3] T = draught [m], defined in [1.2.4] Δ = displacement [t] at draught T C B = block coefficient = Units Unless otherwise specified, the units used in the rules are as indicated in Table 1. Part 3 Chapter 1 Section Definitions Rule length The rule length L is the distance [m] measured on the load waterline from the forward side of the stem to the after side of the rudder post, or to the centre of the rudder stock where there is no rudder post. L shall be not less than 96% and need not exceed 97% of the extreme length on the load waterline. In the case of vessels having neither a rudder post (e.g. vessels fitted with azimuth thrusters) nor a rudder (e.g. pushed barges) the Rule length L shall be taken equal to the length of the load waterline. In vessels with unusual stem or stern arrangements, the Rule length L shall be considered on a case-by-case basis Breadth The breadth B is the greatest moulded breadth, measured amidships below the weather deck Depth The depth D is the distance [m] measured vertically on the midship transverse section, from the base line to the top of the deck beam at side on the uppermost continuous deck. Table 1 Units Designation Usual Symbol Units Vessel s dimensions See [1.1.1] m Hull girder section modulus Z cm 3 Density ρ t/m 3 Concentrated loads P kn Linearly distributed loads q kn/m Surface distributed loads (pressure) p kn/m 2 Rules for classification: Inland navigation vessels DNVGL-RU-INV-Pt3Ch1. Edition December 2015 Page 5

6 Designation Usual Symbol Units Thickness t mm Span of ordinary stiffeners and primary supporting members l m Spacing of ordinary stiffeners and primary supporting members s, S m Bending moment M knm Stresses σ, N/mm 2 Section modulus of ordinary stiffeners and primary supporting members w cm 3 Sectional area of ordinary stiffeners and primary supporting members A cm 2 Vessel speed V km/h Draught The draught T is the distance [m] measured vertically on the midship transverse section, from the base line to the load waterline Ends of rule length and midship The fore end (FE) of the rule length L, see Figure 1, is the perpendicular to the load waterline at the forward side of the stem. The aft end (AE) of the rule length L, see Figure 1, is the perpendicular to the waterline at a distance L aft of the fore end. The midship is the perpendicular to the waterline at a distance 0.5 L aft of the fore end. Part 3 Chapter 1 Section 1 Figure 1 Ends of rule length and midship Superstructure A superstructure is a decked structure connected to the strength deck defined in [1.2.8], extending from side to side of the vessel or with the side plating not being inboard of the shell plating by more than 0.04 B Deckhouse A deckhouse is a decked structure other than a superstructure, located on the strength deck defined in [1.2.8] or above Strength deck The strength deck (main deck) is the uppermost continuous deck contributing to the hull girder longitudinal strength Weather deck The weather deck is the uppermost continuous exposed deck. Rules for classification: Inland navigation vessels DNVGL-RU-INV-Pt3Ch1. Edition December 2015 Page 6

7 Bulkhead deck The bulkhead deck is the uppermost deck up to which the transverse watertight bulkheads and the shell are carried. 1.3 Vessel parts General For the purpose of application of the rules, the vessel is considered as being divided into the following four parts: fore part central part machinery space, where applicable aft part Fore part The fore part includes the structures of the stems and those: located in the part before the cargo zone in the case of vessels with a separated cargo zone (separated by bulkheads) located in the part extending over 0.1 L behind the stem in all other cases unless otherwise mentioned. Part 3 Chapter 1 Section Central part The central part includes the structures within the greater of: the region extending over 0.5 L through the midship section the region located between the fore part and: the machinery space, if located aft the aft part, otherwise Aft part The aft part includes the structures located aft of the after peak bulkhead. 1.4 Reference co-ordinate system The vessel s geometry and loads are defined with respect to the following right-hand co-ordinate system (see Figure 2) Origin: at the intersection among the longitudinal plane of symmetry of vessel, the aft end of L and the baseline X axis: longitudinal axis, positive forwards Y axis: transverse axis, positive towards portside Z axis: vertical axis, positive upwards. Rules for classification: Inland navigation vessels DNVGL-RU-INV-Pt3Ch1. Edition December 2015 Page 7

8 Figure 2 Reference coordinate system Positive rotations are oriented in anti-clockwise direction about the X, Y and Z axes. 2 Application Part 3 Chapter 1 Section Structural requirements These rules contain the requirements for determination of the minimum scantlings, applicable to all types of inland waterway displacement vessels, up to 135 m in length, of normal form, speed and proportions, made in welded steel construction The requirements of these rules apply also to those steel vessels in which parts of the hull, e.g. superstructures or movable decks, are built in aluminium alloys Vessels with length exceeding 135 m, vessels whose hull materials are different than those mentioned in [2.1.1] and [2.1.2] and vessels with novel features or unusual hull design shall be individually considered by the Society, on the basis of the principles and criteria adopted in the rules High speed craft shall comply with RU HSLC. Where the vessel speed exceeds 40 km/h, the respective guidelines defined by Statutory Regulations shall be considered. 2.2 Limits of application to lifting appliances The fixed parts of lifting appliances, considered as an integral part of the hull, are the structures permanently connected by welding to the vessel s hull (for instance crane pedestals, masts, king posts, derrick heel seatings, etc., excluding cranes, derrick booms, ropes, rigging accessories, and, generally, any dismountable parts). The shrouds of masts embedded in the vessel s structure are considered as fixed parts The rules apply to the fixed parts of lifting appliances and their connections to the vessel s structure, even when the certification of lifting appliances is not required. 2.3 Rules applicable to various vessel parts The various chapters and sections of the rules shall be applied for the scantlings of vessel parts according to Table 2. Rules for classification: Inland navigation vessels DNVGL-RU-INV-Pt3Ch1. Edition December 2015 Page 8

9 2.4 Rules applicable to other vessel items The various chapters and sections of the rules shall be applied for the scantlings of other vessel items according to Table 3. Table 2 Rules applicable for the scantling of vessel parts Part Fore part Central part L 40 m Central part L < 40 m General Ch.2 Ch.3 Ch.6 Applicable chapter and section Specific Ch.5 Sec.1 Ch.3 Ch.4 Pt.5 and Pt.6 Ch.4 Sec.6 Pt.5 and Pt.6 Part 3 Chapter 1 Section 1 Aft part Ch.5 Sec.2 Table 3 Rules applicable for the scantling of other items Item Machinery space Superstructures and deckhouses Hatch covers Movable decks and ramps Arrangement for hull and superstructure openings Rudders Other hull outfitting Applicable section Ch.5 Sec.3 Ch.5 Sec.4 Ch.5 Sec.5 Ch.5 Sec.6 Ch.5 Sec.7 Ch.6 Sec.1 Ch.6 Rules for classification: Inland navigation vessels DNVGL-RU-INV-Pt3Ch1. Edition December 2015 Page 9

10 SECTION 2 DOCUMENTATION 1 Documentation requirements 1.1 Documentation to be submitted for approval The plans and documents to be submitted to the Society for review/approval are listed in Table 1. These shall be supplemented by further documentation which depends on the type and service notation and, possibly, the additional Class Notation assigned to the vessel. Structural plans shall show details of connections of the various parts and, in general, shall specify the materials used, including their manufacturing processes, welding procedures and heat treatments The Society reserves the right to ask for further documents and drawings considered necessary. Irrespective of this, the rules of construction also apply to components and details not shown in the submitted drawings Any deviation from reviewed/approved drawings is subject to the Society s approval before work is commenced. Part 3 Chapter 1 Section The application of the Society s rules does not exclude any patent claims. 1.2 Documentation to be submitted for information In addition to those in [1.1.1], the following plans and documents shall be submitted to the Society for information: general arrangement capacity plan, indicating the volume and position of the centre of gravity of all compartments and tanks lines plan hydrostatic curves lightweight distribution In addition, when direct calculation analyses are carried out by the designer according to the rules requirements, they shall be submitted to the Society. Rules for classification: Inland navigation vessels DNVGL-RU-INV-Pt3Ch1. Edition December 2015 Page 10

11 Table 1 Plans and documents to be submitted for approval for all vessels Midship section Transverse sections Longitudinal sections Shell expansion Decks and profiles Double bottom Pillar arrangements Framing plan Plan or document Class characteristics Main dimensions Maximum draught Containing also information on Block coefficient for the length between perpendiculars at the maximum draught Frame spacing Contractual service speed Density of cargoes Setting pressure of safety relief valves, if any Assumed loading and unloading procedure Design loads on decks and double bottom Steel grades Location and height of air vent outlets of various compartments Corrosion protection Openings in decks and shell and relevant compensations Boundaries of flat areas in bottom and sides Details of structural reinforcements and/or discontinuities Details related to welding Part 3 Chapter 1 Section 2 Watertight subdivision bulkheads Watertight tunnels Fore part structure Openings and their closing appliances, if any Location and height of air vent outlets of various compartments Transverse thruster, if any, general arrangement, tunnel structure, connections of thruster with tunnel and hull structures Aft part structure Machinery space structures Foundations of propulsion machinery Superstructures and deckhouses Machinery space casing Hatch covers, if any Location and height of air vent outlets of various compartments Type, power and r.p.m. of propulsion machinery Mass and centre of gravity of machinery and boilers, if any Mass of liquids contained in the engine room Extension and mechanical properties of the aluminium alloy used (where applicable) Design loads on hatch covers Sealing and securing arrangements, type and position of locking bolts Distance of hatch covers from the load waterline and from the fore end Movable decks and ramps, if any Windows and side scuttles, arrangements and details Scuppers and sanitary discharges Rules for classification: Inland navigation vessels DNVGL-RU-INV-Pt3Ch1. Edition December 2015 Page 11

12 Bulwarks and freeing ports Rudder 1 Plan or document Sternframe or sternpost, sterntube Propeller shaft boss and brackets 1 Hawse pipes Plan of outer doors and hatchways Plan of manholes Plan of access to and escape from spaces Plan of ventilation Plan of watertight doors and scheme of relevant manoeuvring devices Containing also information on Arrangement and dimensions of bulwarks and freeing ports on the main deck and superstructure deck Maximum ahead service speed Use of spaces Manoeuvring devices Electrical diagrams of power control and position indication circuits Part 3 Chapter 1 Section 2 Equipment List of equipment Construction and breaking load of steel wires Material, construction, breaking load and relevant elongation of synthetic ropes 1) Where other steering or propulsion systems are adopted (e.g. steering nozzles or azimuth propulsion systems), the plans showing the relevant arrangement and structural scantlings shall be submitted. Rules for classification: Inland navigation vessels DNVGL-RU-INV-Pt3Ch1. Edition December 2015 Page 12

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