Megatro 132kv Pd-Sj Tension Transmission Lattice Tower

• Conductor Circuit: Double Circuit
• Materials: Steel
• Standard: According to Client′s Technical Specification
• Model NO.: MGP-132KV- PD-SJ
• Style: as Per Clients
• Structure: According to Client′s Technical Specification
• Type: as Per Client
• Accessories 1: Power Fitting
• Transport Package: Export Package at Clietns Option
• Specification: AS PER CLIENT
• Trademark: MEGATRO
• Origin: Shandong, China
• HS Code: 73082000
• Production Capacity: 40000 Tons/Year

Product Description

MEGATRO 132kv PD-SJ tension transmission lattice tower
table 1-1 specification parameter table

Project name	132kv transmission Line )
Voltage level	132kv	Seismic intensity
Main meteorological conditions		Maximum design wind speed of M / sec.
Line length	132kv:17.06km;
Basic type	Plate inclined Column Foundation ; The foundation is connected with the tower by inserting an angle connection.
Tower type	132kv:a\b\c\d\de\ht, Total base.
Wire type	132kV :acsr/ga-hawk-477mcm
Ground type	132kV : Erecting a core OPGW-80 cable.

Scope of work

the work scope of this project is XE Pian Xe Namnoy hydropower PROJECT Lao PDR ( package1:115kv/230kv Transmission Line ) corresponds to all the work.
The work undertaken in this project includes, but is not limited to:
2.2.1 , the construction of all materials, equipment procurement, transport and on behalf of the custody;
2.2.2 , all civil engineering, installation, acceptance and handover work;
2.2.3 , Line The clearing of road passages;
2.2.4 , the exclusion of the UXO(unexploded ordnance) within the line corridor and the corresponding safety and security work of the exploration design, management and construction personnel, provide UXO exclusion report.
2.2.5 , construction and transportation of temporary road, bridge and culvert laying;
2.2.6 , the requisition and compensation of the temporary land requisition required by the construction;
2.2.7 , commissioning and trial operation;
2.2.8 , Skec issued PAC Pre-engineering line corridor and engineering body care and maintenance work;
2.2.9 , warranty period of warranty work;
2.2.10 , completion of data transfer work;
 

2.3 Project management characteristics and overall requirements

2.3.1. Project Management characteristics

2.3.1.1 The construction Management mode of this project is the construction project management.
Our company will fully assume the contract stipulated within the scope of the project Construction organization coordination, project construction quality control, Project construction safety control, project construction schedule control, project construction cost control, project construction contract management, project construction information management, and achieve safe civilization construction, environmental protection objectives. At the same time, coordinate with project management of EPC and supervision engineer, carry out general contract and engineer's instruction to the project management. The main features are:
1 ). The project manager responsibility system, according to the company's legal person authorized, the project manager to fully perform the construction contract, and the entire project safety, quality, progress, civilized construction, environmental protection, cost to the company manager.
2 ). The project department is in line with functional project management organization settings.
3 ). The company appoints a deputy manager to coordinate the relevant functional departments of the company, responsible for providing professional guidance and logistic services to the construction project.
4 ). The project department specially set up external Affairs Department, responsible for external coordination work: green compensation, land requisition and so on.
5 ). Civilized construction is the important control content of this project, the project department specially sets up the safe civilized construction management task, is responsible for the safe civilized construction management work full-time.
6 ). The project manager and the construction team sign the safety guarantee responsibility, the construction captain and the construction team personnel sign the Safety guarantee Liability agreement, will the company internal safety management stipulation duty layer decomposition, implements to the person.
7 ). The implementation of standardized management, before the commencement of the establishment of a sound management system, clear responsibility, implementation of the person, the construction phase by the project department responsible for supervision and assessment.
8 ). Using project software to carry out the construction progress, the cost status dynamic control and the statistic report work, select through the specialized training study and the examination qualified personnel, as the specialized Project software operator, the software code according to the unification request.
9 ). With a sound information management system and equipment to ensure timely communication with the general contractor.
2.3.1.2 Management System
Establish and improve the project management organization, the implementation of our company in line with the relevant quality management system standard requirements of the "Quality Management manual" and the corresponding "Quality Management system procedure document"; Implementation of our company in line with the "environmental management system norms and use of guidelines", "Occupational Safety and health management system audit norms "Occupational health and Safety and Environmental Management Handbook", "Occupational Health and Safety (OHS) and environmental management system (EMS)" procedures, as required by the regulations on the safety and Health and environmental management of electric power construction.
2.3.1.3 Management Specification
Our company has begun to implement the "construction project management Norms", the project will be unified deployment of the implementation of the company. According to the actual situation of this project, the following points are emphasized:
N Project manager responsibility System
N Construction Technology Management responsibility system
N Construction Safety Management responsibility System
N Construction Quality Management responsibility system
N Project Management target responsibility
N Project costing system
The above 6 items will be PDCA circulation in this project. Project management requirements adhere to the times, continue to improve, and strive to make the project management of our company to improve the level of project management on the road another milestone.
2.3.1.4 Management Tools
N contract means: strictly implement the terms of the construction contract signed by the company to be honest and trustworthy; the internal management of the implementation of the project and the company's employees of the labor contract, clear responsibility, rights and benefits, the use of humanistic management of subcontracting, strengthen labor protection, to local compensation contracts, compliance with reputation, does not cause problems.
N economic means: The implementation of the Company's economic responsibility system, detailed work responsibilities, to achieve responsibility to people, people in place, measures to implement, take performance appraisal system, reward, and ensure the implementation in place.
N scientific means: Application Project the project management software compiles and adjusts the progress plan and the project resources. Using Project management software to carry out track record of completed construction progress, resource usage and related costs, using Project management software to the actual progress, resource consumption , cost and target comparison, analysis, evaluation of the implementation of the plan, combined with the next phase of planning, so as to achieve dynamic control of the project, scientific management, improve project management level.

2.3.2. General Requirements

2.3.2.1 The overall requirements for the construction management of the project:
A. to comprehensively complete the safety, quality, time limit, efficiency, civilized construction and environmental protection objectives required by the general contracting;
B. equipped with high-quality construction management personnel and construction personnel;
c. to formulate a comprehensive and rational planning;
d. the establishment of strong, efficient, adaptable, strong implementation of the organizational structure;
E. to improve the practical and effective management system;
F. have complete, true, neat construction record;
G. establish a timely, accurate and smooth information communication channels.
Finally achieved:

Serial number	Administrative name	General requirements
One	Quality objectives	Strictly implement the laws, regulations and rules and regulations and the main contract requirements for the quality management of engineering construction in China and Laos, and subject to the requirements of the main contract. Meet the quality requirements of the main contract.
Two	Security objectives	No personal death accidents occur, no major equipment, major construction machinery damage accidents, no major fire accidents, no major traffic accidents, no major environmental pollution accidents and major collapse (collapse) accidents, no large area of infectious diseases and collective accident poisoning. To eliminate the general safety accidents, do not occur in general and above equipment accidents, do not occur in general and above fire accidents.
Three	Progress target	adhere to the "Project progress compliance with safety, quality" as the principle, actively take appropriate measures to ensure that the project opening, completion time and project milestones progress plan on time completion. Commitment to the construction of the project in 2018 years ago completed.
Four	Environmental objectives	In the construction process strictly abide by the Laos state and local laws on environmental protection and the relevant provisions of the contract, and should be in violation of the provisions of the above-mentioned laws or contracts caused by environmental damage and personnel casualties and property losses bear full responsibility.

 
2.3.2.2 The overall requirements for the construction management results of the project:
Here is the design strength of our Chinese tower bolts

Item	Grade	Anti-push strength (N/mm^2)	Anti-shear strength (N/mm^2)
Fastener for towers	4.8	200	170
	5.8	240	210
	6.8	300	240
	8.8	400	300
Anchor  bolts	Q235	160	/
	Chinese 35 steel	190	/
	Chinese 45 steel	215	/

Remark: above technical data only references for our client, we can design every type for our overseas clients.

Cards of quality. And it helps to reduce on-site construction cost due to mismatched assemblies. After fabrication all 35KV 35B11-Z1 SC tangent steel transmisison towers are delivered to the galvanizing facility to be Hot DIP Galvanized. Towers are processed through the facility by Caustic Cleaning, Pickling, and then Fluxing. These strict procedures insure years of maintenance free towers. All finished surfaces shall be level and free of tears, burrs, clots and impurities.

Except otherwise specified elsewhere in the specification, the surface treatment and corrosion protection for all metal parts shall be in conformity with the latest revision of the standards listed below:
ASTM A 123 zinc (hot-dipped galvanized) coating on iron and steel products
DIN 55928 Protective painting of steel structure instructions
DIN 55945 Painting materials-Notions
DIN 18363 Paint work-Buildings
DIN 18364 Surface protection work for steel
DIN 53210 Determination of rust degree
DIN 55151 Determination of adhesion
ISO4628/3 Determination of rust penetration

MEGATRO' 35KV 35B11-Z1 SC tangent steel transmisison towersystems can accommodate a variety of cross-arm. MEGATRO also offers a wide variety of accessories and mounts.   
 
Other information:
Availability size: Based on the customer's requirements.
Material: Chinese material or as per clients requirement
Steel grades
Tower loading legs: Chinese steel Q420B, which equivalent to ASTM A572 GR60
Other webs, bracing and not stress plate and angle steel: Chinese Q235B, which equivalent to ASTM A36
Plates: Chinese steel Q345B, which equivalent to ASTM A572 GR50
Bolts: Bolt quality shall be Chinese Class 6.8 and 8.8, as per our Chinese standard, or ISO 898 standard or ASTM A394 type 0,1,2,3 requirements
The anti-theft bolts shall be Huckbolt Fasteners or approved equivalent.  The fasteners shall be manufactured from high tensile steel A242 or equivalent and hot-dip galvanized in accordance with ASTM specification A153 and A394.
 
Fabrication standard: Chinese Standard or other standard which client accepted
A) Dimension and tolerance for angle are according to GB/T1591-1994, similar to EN 10056-1/2
B) Hot dip galvanization in accordance with GB/T 13912-2002, which similar to ASTM A 123
C) The welding will be performance in accordance with AWS D1.1 or CWB standard
D) All fastener galvanization conform to ASTM A153 requirements.

Package: Both parties discuss before delivery
Port of Loading: Qingdao Port
Lead Time: One month or based on the customer's needs (For time being our capacity about 5000 tons one month, and can meet client requirements)
Minimum order: 1 set


General Fabrication Requirements
Here is general fabrication requirements for our transmission tower; however, both parties must discuss all drawings and confirm all shop drawings, technical specification, and which standard to conform.
Before mass production, we must received all signed approved shop drawings and technical documents from our client.

Our Fabrication shall be in strict accordance with detail Drawings prepared by the Contractor and approved by the Engineer.  Fabrication shall begin after the approval of the shop assembly and tests.
      
Shearing   
Shearing and cutting shall be performed carefully and all portions of the work which will be exposed to view after completion shall be finished neatly.  Manually guided cutting torches shall not be used.

All material over 13 (or 12) mm thick shall be cold sawn or machine flame cut.
Cropping or shearing shall be allowed for material thickness of 13 mm or less.
Flame cutting of high yield steel shall be preceded by a slight preheat operation by passing the cutting flame over the part to be cut.
All flame-cut edges shall be ground clean.
      
Bending
Bending shall be carried out in such a manner as to avoid indentation and surface damage. All bending over 5^o, or high yield steel, shall be performed while the material is hot.

Welding
No welding shall be done unless prior approval has been obtained from the Engineer.
Welding shall not be allowed at tower attachment points for conductor, shield-wire, insulators or associated assemblies or brackets.

Sub-punching
All holes in structural steel less than 10 mm thickness may be punched to full size unless otherwise noted on the approved Drawings.  Holes shown on the Drawings as drilled holes and all holes in structural steel 10 mm or more in thickness and tension members of cross-arms shall be drilled or sub-punched and reamed.

All holes shall be clean cut and without torn or ragged edges.  All burrs resulting from reaming or drilling shall be removed.  All holes shall be cylindrical and perpendicular to the member.

Where necessary to avoid distortion of the holes, holes close to the points of bends shall be made after bending.

Punching
For punching to full size, the diameter of the punch shall be 1.0 mm larger than the nominal diameter of the bolt, and the diameter of the die shall not be more than 1.5mm larger than the diameter of the punch. For sub-punching, the diameter of the punch shall be 4 mm smaller than the nominal diameter of the bolt, and the diameter of the die shall be not more than 2 mm larger than the diameter of the punch.  Sub-punching for reamed work shall be such that after reaming no punch surface shall appear in the periphery of the hole.

Hole Size
Where holes are reamed or drilled, the diameter of the finished hole shall be not greater than the nominal diameter of the bolt plus 1.0 mm.

Accuracy
All holes shall be spaced accurately in accordance with the Drawings and shall be located on the gauge lines.
The maximum allowable variation in hole spacing from that indicated on the Drawings for all bolt holes shall be 0.8 mm.

Fabrication Tolerances
A specification for tolerances shall be submitted for approval by the Engineer prior to commencement of fabrication.

Bolt List
A complete list of bolts showing their lengths and the members, which they are to connect shall be given on the erection diagrams.

Step bolt:
Each  steel tower  shall be provided with step bolts on one of the legs for single circuit steel  tower  and  on  two  diagonally  opposite  legs  for  double  circuit  steel  tower  from approximately  2.5  meters  above  ground  level  to  the  cross  arm  and  from  thereon  to each  ground  wire  peak.  Step  bolts  shall  be  furnished  for  each  leg  extension  in  an amount of 25% of the step bolt holes. These bolts shall not be less than 16 mm or 3/4" diameter, double nut type, 18 cm or 7" long with 35 mm or 1 5/8"diameter, symmetrical head, two hexagon nuts and spring washers, spaced not more than 45 cm or 18" apart. Each bolt shall withstand without permanent deformation a vertical load of at least 137 kg applied at the bolt head. If any technical specification, we will discuss with our client and confirm before mass production.

Locking Devices
Locking devices for tower bolts will not be required, but point punching shall be performed.

Anti-theft Fasteners    
Appropriate anti-theft fasteners for example Huck-bolting shall be applied on all the towers up to the level of anti-climbing devices, to prevent theft of tower members.

Piece Marks
All pieces shall be stamped before galvanizing with the piece marks shown on the erection Drawings, with the marking not less than 20 mm high placed in the same relative location on all pieces.  The marking shall be plainly visible after galvanizing.

Galvanizing
All material shall be hot-dip galvanized after fabrication in accordance with the latest revision of GB/T 13912-2002 or ASTM Specification A 123.

Material that has been rejected because of bare spots or other coating defects shall either be stripped and re-galvanized, or the uncoated areas shall be recoated by an approved method.

All plates and shapes which have been warped by the galvanizing process shall be straightened by being re-rolled or pressed.  The material shall not be hammered or otherwise straightened in a manner that will injure the protective coating.

Approval shall be secured from the Engineer if galvanizing is done outside of the Contractor's plant.

All galvanized steelwork shall be protected against white storage stain by using an approved dichromate solution treatment immediately following galvanizing.

Shop Assembly and Inspection
All built-up assemblies shall be shop bolted complete with washers, after  galvanizing, and shipped as a unit. When specified in the Purchase Order,  MEGATRO shall completely assemble in the presence of Owner one (1) structure of each type before the first shipment of such structures. Any errors in the shop detail drawings or shop work shown by this assembly shall be immediately corrected. MEGATRO's proposal shall include the work required for these shop assemblies. Any material rejected by Owner for failure to conform with this specification or the Purchase Order shall be corrected or replaced by MEGATRO. The fact that material has been inspected, or Owner has waived the right to inspect any material, shall not prevent rejection of the material if it is found not to be in proper condition o r to have fabrication inaccuracies preventing proper assembly.

Design Calculations and Drawings
Our MEGATRO can perform complete design calculations, design drawings and shop detail drawings of each structure and submit checked calculations and drawings for Owner's review and distribution in the quantity, manner and time set forth in the Purchase Order. Our drawings consist of the following:

Design drawings showing structure dimensions, conductor clearance diagrams and schedule of member sizes, bolt sizes and material specifications.

Erection drawings showing each individual member with its identification  mark, location and position of outstanding leg of angles, with number, diameter and length of bolts for connection; and typical details to large scale where a number of members frame together.

Shop detail drawings showing all dimensions, draw for tension diagonals,  and all shearing punching, bevel cutting, grinding, bending and identification mark for each member.

A complete Bill of Material for each structure showing the number, kind, size, length, weight and identification mark for each member including all bolts.
(Remark: only PO confirmed, our MEGATRO can start shop drawings for client.)

Marking
All pieces shall be distinctively marked with erection marks clearly visible  after galvanizing, corresponding to those on the erection drawings. Steel tower  steel stamping dies, minimum 16 mm or 5/8" high, shall be used and special care shall be taken to see that all erection marks are  made  in  such  a  manner as not to be obliterated in transit, or in any way damage the galvanizing or impair the strength of the member.

In marking the members, each marking shall be prefixed by letters, which indicate the type of the steel tower. For members that are used in more than  one type of steel tower, all steel tower-type designations shall appear on the marking.

In addition, the members shall be marked with water -proof ink stencil 25 mm. or 1.0" high after galvanizing to facilitate in yarding the members and erecting the steel towers.

The diameter and the length of the bolt shall be marked on each bolt end so as to be visible after galvanizing.

An additional Contractor identification mark shall be stamped immediately in front of the piece identification marks. This Contractor identification mark  shall be submitted to Owner for acceptance and registration prior to first use.

Identification marks shall be located conspicuously to permit easy reading.   Marking of like pieces shall be identical in location, and pieces over 14 feet in length shall be marked at both ends.

Identification marks shall be applied as follows:
Before galvanizing stamp with 2.0mm deep, 15.0mm minimum height steel  die letters and numerals. After galvanizing neatly stencil a 6.0mm wide  straight line, to underline the identification marks, made with durable paint or ink that will adhere to the galvanized surface and remain legible.

All small items that are not adaptable to die marking and are not boxed shall be identified by either attaching die stamped steel tags or plastic tags with permanent markings. The tags shall be attached with non-corrosive wire.