TECHNICAL SPECIFICATION LINKSPAN SYSTEM
FOR
Loch Ryan Port
Our project number: 3091101
Date: 2010-07-23
Revision A
Contents
REVISION RECORD (4)
1.0INTRODUCTION (5)
1.1General (5)
1.2 List of Drawings, (6)
2.0GENERAL DESCRIPTION (7)
2.1Components (7)
2.2Principal for operation (7)
2.3Manoeuvrability (7)
3.0DESIGN CRITERIA (8)
3.1Design Life (8)
4.0STRUCTURAL / MECHANICAL ENGINEERING (9)
4.1Material Specification (9)
4.2Manufactuirng (10)
4.2.1Flame Cut Surface (10)
4.2.2Welding (10)
4.2.3Tolerances (11)
4.2.4Cloosed Spaces (11)
4.3Structural Design and Manufacturing (11)
4.3.1Lower Ramp (11)
4.3.2Fixed Access Ramp 1 (12)
4.3.3Fixed Access Ramp 2 (13)
4.3.4Sledge (13)
4.3.5Upper Access Ramp (14)
4.3.6Upper Outer Access Ramp (15)
4.3.7Lower RampTowers (15)
4.3.8Upper RampTowers (15)
4.3.9Support 1 (16)
4.3.10Support 2 (16)
4.3.11Stop Fender (17)
4.4Coating and Protective Treatment (17)
4.3.1 Surface and edge preparation (18)
4.3.2 General Coating Requirements (18)
5.0HYDRAULIC ENGINEERING (21)
5.1Scope of Hydraulic system installation (21)
5.2Hydraulic Piping (21)
5.3Hydraulic Pressure (21)
6.0ELECTRICAL ENGINEERING (22)
6.1Scope of Electrical installation (22)
6.2Electrical cable support and cable trays (22)
6.3Electric cables (22)
6.4Lightning (22)
7.0QUALITY CONTROL TESTING AND DOCUMENTATION (23)
7.1Quality Control (23)
7.2Quality Control Activities (23)
7.3Certificates (25)
7.4Testing (25)
7.5.1. Non Destructive Test (NDT) (26)
7.5.2 Steel Material (27)
7.5.3 Folding Test (27)
7.5.4 Coating (28)
7.6Inspection (29)
8.0EXTENT OF DELIVERY BY TTS PORT EQUIPMENT (29)
REVISION RECORD
1.0 INTRODUCTION
1.1 General
This Specification describes the technical requirements of a “Linkspan System” to be built by a prospective Manufacturer.
The Linkspan System will be installed and commissioned by TTS Port Equipment.
The requirements for primary and secondary steel structure, surface protection as well as the requirements for utility systems are included in this specification.
The Linkspan System comprises of one (1) Linkspan and one Stop Fender and comprises of the following main parts:
?One (1) Lower Ramp
?One (1) Fixed Access Ramp 1
?One (1) Fixed Access Ramp 2
?One (1) Upper Access Ramp
?One (1) Upper Outer Ramp
?One (1) Stop Fender (inner cage, outer cage and arm)
?Two (2) Lower Ramp Towers
?Two (2) Upper Ramp Towers (inner and outer part)
?One (1) Support 1
?One (1) Support 2
?One (1) Sledge
The Linkspans shall be built from all new, high quality structural steel material.All exposed areas except the driving surfaces shall be corrosion protected by a five layer high quality coating system. Driving surfaces shall be covered with high friction stones in an epoxy raisin.
The Manufacturing shall be performed in accordance with an approved Quality Control Plan. The Manufacturing shall fulfil the requested Rules and Regulations. All material used shall be traceable.
The free movement of all Linkspan parts shall be demonstrated by the Manufacturer.
1.2 List of Drawings,
The TTS Port Equipment drawings as listed in the “Drawing List” Doc. No: 3091101-06 shall form an integral part of this specification.
Drawings with Revision “Pxx” where xx is a number, 01 or bigger are drawings issued for information only. Drawings with “P” revision may NOT be used for any Manufacturing activities.
Drawings issued by TTS Port Equipment as base for Manufacturing are;
?First revision is Revision “A”.
?Second revision is Revision “B” and so on.
It is the responsibility of the Manufacturer to ensure that all work is performed in accordance with the latest revision of the Drawing.
2.0 GENERAL DESCRIPTION
2.1 Components
Reference is made to Drawing No: 30911-0001-01 “General Arrangement”
The Linkspan comprise of the following main components:
Of the above total weight 50 ton are fittings. All dimensions and weights are approximate.
2.2 Principal for operation
The Linkspan shall be hydraulic operated.
Hydraulic Power pack and control system will be supplied and installed by TTS Port Equipment in Europe.
2.3 Manoeuvrability
The Linkspan system shall be possible to manoeuvre within prescribed limits without obstructions or undue forces.
The free movement of the different parts shall be demonstrated by the Manufacturer;
?Upper access ramp versus Fixed access ramp 2: 4 meter sliding horizontally ?Upper access ramp versus Fixed access ramp 2: -8o to +8o vertically
?Sledge versus Fixed access ramp “: 4 meters sliding horizontally
?Outer access ramp versus Upper access ramp: -10o to +60o vertically
?Flaps versus outer access ramp: -10o to +10o vertically
?Upper ramp tower inner part vs. outer part: 3 metres vertically
?Stop fender element 2 versus Stop fender element 1: 3 meter sliding horizontally ?Stop fender element 3 versus Stop fender element 2: 3 meter sliding horizontally ?Hinges of Stop fender versus Stop Fender: -6o to +6o vertically
?Hinges of Stop fender versus Stop Fender: -3o to +3o horizontally
?Hinges of Main Ramp versus Main Ramp: -6o to +6o vertically
3.0 DESIGN CRITERIA
3.1 Design Life
Materials and components installed, and their associated finishes, shall have a design life of 25 years in an marine environment.
Corrosion protection shall be furnished with a five year warranty, the warranty shall be valid for both material and application.
4.0 STRUCTURAL / MECHANICAL ENGINEERING
4.1 Material Specification
Reference is made to Drawing 30911-0005 “General Notes”
Structural material of the Linkspans shall be of non-used, all new high quality high tensile carbon steel material with minimum yield strength of 345-360 MPa if not stated otherwise.
Minimum Impact strength according to Lloyds Rules Class D. Impact Energy min 27 J at -20°C in all directions.
Minor parts such as Hinge Pins and sliding surfaces shall be made of Stainless Steel.
If not stated otherwise the follow materials may be used:
Steel denominated HT ST on the drawings:
?For plate material, HP profiles and hollow square profiles:: IACS-2006 DH36 or St355-J2
As an alternative GB/T 1591-1994-Q345D may be used for material thicknesses up to and including 30 mm.For thickness 30 < t <= 50 GB/T 1591-1994-Q390D and for t>50 GB/T 1591-1994-Q390E
For steel denominated SS or St Steel on the drawings:
?For plates and pins: GB/T 1220-2007-022Cr17Ni12Mo2
?For Axles: GB/T 1220-2007-022Cr22Ni5Mo3N
Equivalent stainless steel material may be used subject TTS approval
For other steel material
IACS-2006 Grade A, St235 or GB/T 700-2006-Q235B
Material used for equipment to be Hot Dip Galvanized,HDG:
Material used for equipment to be HDG shall be in accordance with EN-ISO 1461 table NA2 (for Fe/Zn 115) Content of silicon 0,15%-0,21%
The HDG to be performed in accordance with EN-ISO 1461:1999 Fe/Zn 115
Plate material subject to stresses in the thickness direction shall fulfil the requirement of EN-10164:2005 Z35. The material shall be delivered with certificate stating the above properties. In addition ultrasonic testing in accordance with EN-10160-1999 shall be performed.
All steel material shall be delivered with 3.1 certificate in accordance with EN
EN10204:2005.
Bolts nuts and washers of dimension M12 and bigger to be HDG and according to ISO 100 898-1 : 1999 designated 8.8. For dimension less than M12 A4-80 to be used. All nuts, bolts and washers to be delivered with 2.1 certificate in accordance with EN
EN10204:2005.if not stated otherwise.
Plastic material: UHMW-PE 1000. All new.
Traceability to be achieved via the manufacturers Quality Control Program.
4.2 Manufactuirng
The manufacturing shall be performed in accordance with SS-EN 1090-2:2008 if not steted otherwise. Overall classification of the structure:
?Consequence Class: CC3
?Production Category: PC2
?Service Category: SC2
?Execution Class: EXC4
4.2.1 Flame Cut Surface
Flame cut surfaces shall have an evenly cut edge and without any burn scars. The deviation of angle between plate surface and cut edge must not exceedd 1Deg. Scars to be less than 0,2 mm.
4.2.2 Welding
Welders to be qualified in accordance with EN287-1:2004
Welding Consumables to be in accordance with WPS
All welding to be done in accordance with approved WPS based on approved WPQR. All documents to be submitted to TTS
All welding to be performed and quality controlled in Accordance with SS-EN 3834-1, SS-EN 3834-2 and SS-EN 3834-5.
Wled quality to be in accordance with SS-EN-ISO-587 Welding Class B if not stated otherwise.
Welds to be fillet welds min a4 if not stated otherwise. Effective throat
All profile and boxes to be welded tight.
4.2.3 Tolerances
General tolerances in accordance with ISO 13920:1996 if not stated otherwise.
?Linerar dimension: B
?Angular dimensions: C
?Streightness and flattness: F
?TTS general requirements : Q1002-0
4.2.4 Cloosed Spaces
All closed spaces shall be pressure tested up to 20kPa, holding time 20 min.
4.3 Structural Design and Manufacturing
The structure has by TTS Port Equipment been designed in accordance with SS-
EN1090-2:2008.
The relevant ISO and EN standards related to Material, Production, Testing and Quality Control that should be adhered to is listed in”, Dwg No: 30911-0005 “General Notes” and this Specification.
Quality requirements for the Linkspan are listed in Dwg No 30911-0005 “General Notes”, this Specification and related documents.
The quality control activities related to welding shall follow SS-EN ISO 3834-1, SS-EN ISO 3834-2 and SS-EN ISO 3834-5
The Manufacturer is responsible for the assembly and installation of all material produced by the Manufacturer or supplied by TTS Port Equipment.
4.3.1 Lower Ramp
Reference is made to Dwg. No: 30911-0100-1.
The lower Ramp is an open grid structure supported by enclosed longitudinal stiffeners and a transversal box beam. A typical cross section of the enclosed longitudinal stiffener is show in Dwg 30911-0130-01 TO -09.
The top plate shall along all sides be equipped with an end stop for the anti-skid resin by means of a 5x20 flat bar welded to the surface. The flat bar shall in general be positioned as close as possible to the edge of the top plate. Along the sides of the ramps are also curbs welded to the top plate.
The ramp is hinged at its inner end with two main hinges, one at each side, and one intermediate hinge.
The transversal beam is at its outer end equipped with ears for installation of three (3) hydraulic cylinders on each side of the ramp for movement of the lower ramp. The lower ramp shall be equipped with cylinder ears for the connection of two (2) cylinders on each side of the ramp for movement of the Upper access ramp. The upper outer towers are welded to the box beam on each side of the, the seaside tower is in addition connected to the lower ramp by four (4) additional transversal support beams. On the right side of the ramp the box beam is equipped with a sliding support for the stop fender.
Railings, Hot dip galvanized, shall be manufactured and bolted to the Ramp.
Hydraulic pipes and pipe supports shall be installed as follows:
?On one side of the ramp from the hinge to the box beam.
?Along the box beam to both sides of the ramp.
See also Chapter 5 “Hydraulic Engineering”
Plastic Cable Conduits shall be installed parallel to the hydraulic pipes. See also Chapter 6 “Electrical Engineering”.
Lubrication Pipes, shall be installed.
4.3.2 Fixed Access Ramp 1
Reference is made to Dwg. No: 30911-1000-01.
The Fixed access ramp 1 is an open grid structure supported by enclosed longitudinal stiffeners and transversal beams. At each side of the ramp are the longitudinal girders that will also act as railings.
The top plate shall along all sides be equipped with an end stop for the anti-skid resin by means of a 5x20 flat bar welded to the surface. The flat bar shall in general be positioned as close as possible to edge of the top plate. Along the sides of the ramps are also curbs welded to the top plate.
The Fixed access ramp 1 is hinged at its inner end to a concrete ramp and in its outer end to the Fixed access ramp 2.
The Fixed Access Ramp 2 will at it’s outer end be vertically supported by Support 1. 4.3.3 Fixed Access Ramp 2
Reference is made to Dwg. No: 30911-1100-01.
The Fixed access ramp 2 is an open grid structure supported by enclosed longitudinal stiffeners and transversal beams. At each side of the ramp are the longitudinal girders that will also act as railings.
The top plate shall along all sides be equipped with an end stop for the anti-skid resin by means of a 5x20 flat bar welded to the surface. The flat bar shall in general be positioned as close as possible to the edge of the top plate. Along the sides of the ramps are also curbs welded to the top plate.
The outer end of the Fixed access ramp 2 is constructed in a way that will allow for the sledge to slide into the Fixed access ramp 2. Due to this there are slices in the top plate that will fit to the stiffeners of the Sledge. It is equipped with sliding surfaces to facilitate the movement.
The Fixed access ramp 2 is hinged at its inner end to the Fixed access ramp 1 and in its outer end to Support 2. The Fixed access ramp 2 is also connected to the Upper access ramp by a cylinder.
The Fixed Access Ramp 2 will at its outer end be vertically supported by Support 2 and at its inner end by Support 1.
4.3.4 Sledge
Reference is made to Dwg. No: 30911-1200-01.
The Fixed access ramp 2 is an open grid structure supported by enclosed longitudinal stiffeners and transversal beams.
The top plate shall along all sides be equipped with an end stop for the anti-skid resin by means of a 5x20 flat bar welded to the surface. The flat bar shall in general be
positioned as close as possible to the edge of the top plate. Along the sides of the ramps are also curbs welded to the top plate.
The sledge is at its outer end hinged to the Upper access ramp and will at it’s inner end be supported by the Fixed access ramp 2.
4.3.5 Upper Access Ramp
Reference is made to Dwg. No: 30911-1300-01.
The Upper access ramp is an open grid structure supported by enclosed longitudinal stiffeners and transversal beams. At each side of the ramp are the longitudinal girders that will also act as railings. At it’s outer end is a transversal box beam that extends outside the driveway.
The top plate shall along all sides be equipped with an end stop for the anti-skid resin by means of a 5x20 flat bar welded to the surface. The flat bar shall in general be positioned close as possible to the edge of the top plate. Along the sides of the ramps are also curbs welded to the top plate.
Behind the box beam are connection point’s for the cylinders, two (2) on each side of the ramp, that will be used to manoeuvre the Upper outer access ramp. At the ends of the box beam there will be sliding surfaces.
The Upper access ramp is at its inner end hinged to the sledge and connected to the Fixed access ramp 2 by a cylinder and at it’s outer end hinged to the Upper outer access ramp. It is at it’s inner end equipped with a skid bracket on either side of the ramp that will slide along support 2.
The Fixed Access Ramp 2 will at its inner end be vertically supported by Support 2 and at the ends of the box beam it will be vertically supported by the upper ramp towers. Hydraulic pipes and pipe supports shall be installed as follows:
?From the inner end of the ramp to cylinder ears on each side of the ramp.
See also Chapter 5 “Hydraulic Engineering”
Plastic Cable Conduits shall be installed parallel to the hydraulic pipes. See also Chapter 6 “Electrical Engineering”.
Lubrication Pipes, shall be installed.
4.3.6 Upper Outer Access Ramp
Reference is made to Dwg. No: 30911-1400-01.
The Upper access ramp is an open grid structure supported by longitudinal stiffeners, bulb profiles, and transversal beams. At each side of the ramp are the longitudinal girders that will also act as railings.
The top plate shall along all sides be equipped with an end stop for the anti-skid resin by means of a 5x20 flat bar welded to the surface. The flat bar shall in general be positioned close as possible to the edge of the top plate. Along the sides of the ramps are also curbs welded to the top plate.
At the inner end of the Upper outer access ramp are connection point’s for the cylinders, two (2) on each side of the ramp, that will be used to manoeuvre it in correlation to the Upper access ramp.
The Upper access ramp is at its inner end hinged to the Upper access ramp and at it’s outer end to the flaps.
4.3.7 Lower RampTowers
Reference is made to Dwg. No: 30911-0300-1 and 30911-0500-1.
Two Towers, mirrored, shall be built to support the Lower Ramp. The Towers shall be equally equipped if not stated otherwise.
The Towers consist of an A-frame enclosed box structure transversally supported by an enclosed box brazing hinged to the A-Frame.
Cylinder ears shall be installed at the top of the horizontal beam. Three cylinders will connect each tower to the lower ramp.
The Tower shall be equipped with galvanized platforms and ladders bolted to the Towers to allow for inspections of the cylinder connection. The platforms will go all around the upper part of the towers.
4.3.8 Upper RampTowers
Reference is made to Dwg. No: 30911-0400 and 30911-0600.
Two Towers, mirrored, shall be built to support the Upper outer access ramp and are welded to the box beam of the lower ramp. The Towers shall be equally equipped if not stated otherwise.
The Towers are built up of an inner part, an outer part and four (4) support legs that are hinged to the outer part.
The inner part is an open box beam structure that will be equipped with hinge ears at the middle and top of the vertical legs for connection of the support legs. The inner part will also be equipped with siding surfaces for easy movement of the inner part.
The outer part is a closed box beam structure with internal stiffeners in the upper part. The horizontal part of the A-frame will be equipped with ears for connection of two (2) cylinders. At the top of the A-frame is a crossbeam on which the Upper access ramp will slide. The sides of the A-frame legs and the top and sides of the crossbeam are equipped with sliding plates.
The seaside tower is equipped with transversal support legs that are connected to the lower ramp. The leags are box beams with hinge ears at its outer ends.
The Tower shall be equipped with galvanized platforms and ladders bolted to the Towers to allow for inspections of the cylinder connection to the inner part of the upper towers. . The platforms will go all around the upper part of the outer towers.
4.3.9 Support 1
Reference is made to Dwg. No: 30911-1600.
Support 1 is a box beam structure that consists of two vertical legs, one horizontal beam and one diagonal beam.
The Fixed access ramps 1 and 2 will be bolted to Support 1.
4.3.10 Support 2
Reference is made to Dwg. No: 30911-1500.
Support 2 is a box beam structure consisting of four (4) legs, two (2) transversal beams that are connected to each other by means of two box beam girders. On the two girders are the sliding supports for the sledge, which are equipped with sliding plates.
Support 2 is equipped with hinge ears for connection of the Fixed access ramp 2. Support 2 will be equipped with a galvanized staircase from the ground level to the top of Support 2 where there will also be platforms to connect the staircase to the fixed access ramp 2.
4.3.11 Stop Fender
Reference is made to Dwg. No: 30911-0200.
The stop fender consists of three main parts, the Outer cage, Inner cage and Arm.
The outer cage is a framework construction made of box beams and has two compartments. At its inner end the outer cage is equipped with hinge ears for connection to the quay and a plate for installation of a rubber damper. Inside the cage are sixteen (16) sliding surfaces.
The inner cage is a framework construction made of box beams and has two compartments. At its inner end the inner cage is equipped a plate for installation of a rubber damper. The outer compartment is equipped with sliding mechanisms and hinge ears for connection of locking cylinders.
The cages are connected to each other through a rubber damper. The Inner cage is connected to the Arm through a sliding mechanism and two locking devices. On the outside of the inner cage are sliding plates mounted.
The Inner and Outer cages shall be equipped with hydraulic pipes and pipe supports and shall be installed as follows:
?Along the length of the outer cage.
?Along the inner cage to the locking devices.
See also Chapter 5 “Hydraulic Engineering”.
Two Plastic Cable Conduits shall be installed parallel to the hydraulic pipes. See also Chapter 6 “Electrical Engineering”.
4.4 Coating and Protective Treatment
Reference is made to “General Notes” Dwg. No 30911-0005.
?Painting works including surface preparation and painting inspection shall be carried out in accordance with the given standards and the paint manufacturer’s recommendations.
?The surface of stainless steel, galvanized steel or other non-corrosive materials and internal surfaces of tightly enclosed spaces shall not be painted unless
otherwise specified.
?Painting shall not be conducted in open air if not specifically approved by TTS Port Equipment authorized representative.
?Corrosivity class C 5-M High according to ISO 12944-2:1998.
?Painting system A5M.06 ISO 12944-5:2007 five (5) layer system, total DFT min 320 my. Each coat layer shall be clearly distinguishable by color from the
previous coat layer. The system shall by the paint manufacturer be tested in
accordance with the above rules.
?Colour of top coat to be decided.
?Quality reporting, surface preparation and paint application report as per agreed quality report form and ISO 12944.
4.3.1 Surface and edge preparation
Performance of steel work shall comply with the requirements of ISO standard 8501-3:2006, Preparation Grade P3 before application of paint. ISO standard 12944-3:1998, Design Considerations shall be fulfilled.
Inspection of steelwork shall be done and documented after blasting, before painting and between coats according to ISO 8501-3. TTS Port Equipment representative to be called for all inspections.
Amongst others the following to be included:
?All enclosed spaces shall be cleaned internally from debris and dirt before they are closed.
?All steel has to be cleaned by steam cleaning before blasting. Salinity to be measured after cleaning.
?Grit Blasting should be done to Sa 2? according to ISO standard 8501-1 immediately before painting.
?Surface roughness, except driveways according to ISO 8503-1 Comparator G.
Medium grade.
?Surface roughness, driveways according to ISO 8503-1 Comparator G. Coarse grade.
4.3.2 General Coating Requirements
Paint from a well renowned Paint Manufacturer shall be used. The chosen Paint Brand shall be approved by TTS Port Equipment. The following paint manufacturers may be considered:
?International Paint
?Sigma
?Hempel
?Jotun
The Linkspan Manufacturer shall engage a Paint Manufacturer Surveyor to assist during the application period. The Paint shall be easily accessible in Western Europe. Stripe coating
All edges, notches, weld seams and areas with air resistance to spray application shall be stripe coated with brush before application of each full coating.
Dry Film Thickness of Paint
In accordance with Dwg. No 30911-0005 “General Notes” a five coat system shall be used within Corrosivity Class C5-M with a zink-ritch primer as first coat and a Modified Polyurethane as top coats.
Section joints
For all section joints that shall be welded together after paint application, there shall be an allowance area of 500mm feathering built up as follow;
-200 mm free blasted steel surface,
-200 mm with zinc epoxy
-100 mm all layers of paint, feathered
The different surfaces shall be covered with tape during the paint process.
Nuts, bolts and Washers
For all bolted connection of paint coated surfaces the bolts shall be equipped with two washers under the nuts in order not to damage the coating during installation of the bolts. The nuts shall after tightening be secured with a punch mark and the complete connection, (bolt, nuts and washers) shall be coated as the surrounding areas.
Drive way surfaces, all ramps
The Drive Way Surfaces is defined as the upper surface area in between the longitudinal side girders, curbs or railings less about 100 mm on each side, all ramp sections.
The Drive Way Surfaces shall be painted with a Holding primer as per Anti Skid Coating Supplier recommendation. Polyurethane or epoxy based Anti skid coating for Marine environment, with grit size 3-5 mm. Safegrip XD PU3/5 or equivalent Bimagrip coating. Assistance form Anti-Skid Coating Manufacturer Surveyor shall be used during the application.
Documentation of Anti Skid coating and its application as documentation of the remaining Linkspan Coating.
Measuring:
All measuring of paint shall be according to ISO 19840 and should be reported on quality reporting form.
Guarantee
The warranty period for coating, material and application shall be 5 years.
The condition of the coating will be assessed by the use of ISO 4628-1/5 and ISO 4624. Applicable threshold values for guarantee as per ISO 4628:
?The degree of blistering shall not exceed 0
?The degree of rusting shall not exceed Ri 0
?The degree of cracking shall not exceed 0
?The degree of flaking shall not exceed 0