2.3.2 - Characteristics of pylons:
The pylons will be supplied in accordance with the silhouette plans which are the subject of this
document.
1° / Execution plans:
The construction plans for the pylons will be provided by ONEE-BE to the Contractor upon notification of
the contract.
However, the Contractor must, before any execution, verify these plans and formulate any observations
15 days after their receipt. After this period, it is considered to have accepted them without
reservations.
In the event of observations, ON EE-BE will communicate its final decision within 3 weeks.
2° / Prototypes:
If he has not already provided ONEE-BE with one of the types of pylon, the Contractor must proceed in a
period of 2 months after notification of the contract and before the execution of any series, for the
manufacture and complete assembly in the workshop of a prototype tower of this type.
ON EE-BE reserves the right to check the mantis pylons in the workshop.
Any defect due to the execution plan will lead to the modification of this plan by the Contractor and at
his expense.
3°/ Steels:
Unless otherwise indicated -upwards- on the detailed drawings, the grades of steels to be used are:
- S355JR (E36-2) for angles greater than equal to L90x7;
- S275JR (E28-2) for angles lower than L90x7;
- S275JR (E28-2} for all sheets.
The angles are generally with equal wings or feathered.
They must meet at least the criteria used for class III of standard NF A 35-503 "Steels for hot-dip
galvanizing".
The steels must correspond to the NFA.35501 standard defining the grades and quality of steels. They
must also meet the requirements of standards NFA.45001, NFA-45009 and NFA-46503 defining
dimensions and tolerances.
The dimensions of the profiles to be used are defined on the execution plans.
The galvanizing of the parts must meet the conditions set by Standards NFA-91121, NFA-91122 and NFA35503.
4° / Bolts:
The various elements of a pylon will be assembled using class 6.8 galvanized bolts. The screws, nuts and
washers must meet the specifications of the NFE-27005, 024 and 611 standards. In all cases, the
threaded part of the bolts must protrude from the nut by at least two (2) threads.
5°/ Special issues:
The Contractor will take all the necessary measures so that the pylons present faces
strictly flat after assembly on site. To this end, he must proceed in the workshop to the spacing of all the
braces, frames, etc. which would have been deformed at the time of their cut, drill or galvanize and
remove any zinc deposits in the holes and at the ends of the angles.
6° / Supplies not conforming to the contract:
In the event that it would result from the tests of material or obvious observation, that a part or the
all of the supplies does not meet the guarantees provided for or one of the conditions specified in the
contract, ONEE-Be shall have the right to require the Contractor to replace all or part of its supplies.
This provision is valid for manufacturing defects noted at the time of construction of the line.
7°/ Marking of pylon parts:
All parts will be marked by cold stamping before galvanizing. An additional indication corresponding to
the series will be marked on each part to avoid confusion.
2.3.3 - Pylon weight:
the weights of the pylons indicated in the price schedule are estimates. The weight that will be used for
invoicing quantities is the theoretical weight.
Nevertheless, and within the framework of quality control, ONEE-BE reserves the right to request
possibly the Contractor to proceed in the presence of a representative of ONEE-BE to weigh pylons
chosen at random in the Contractor's workshop.
2.3.4 - Technical Specification for the supply of metal pylons:
In addition to the elements indicated above, the Contractor must comply with the general technical
rules set out in the Technical Specification for the supply of pylons and metal fittings for overhead lines.
The Contractor is responsible for the mechanical strength of the pylons during the line construction
work. In particular, he must respect in all cases of installation, the different load cases taken into
consideration during the design of the pylons (assembly, attachment of cables, guying, etc.)
The Contractor must verify that the stability of the pylons in the most unfavorable hypothesis. The
responsibility of the Contractor remains fully committed to the mechanical strength of the pylons.
2.3.5 - Lining of pylons:
The pylons will be in painted galvanized steel (the paint system must be validated beforehand by ONEEBE) along the entire line. The minimum thicknesses of the galvanization must be greater than or equal to
the values indicated in the ISO 1461 standard increased by 35 micrometers (example for steels >6rnm,
the average coating thickness will be 120 micrometers instead of 85 micrometers).
The Contractor must comply with the technical rules and criteria set out in standard NF EN 1501461
defining hot-dip galvanizing coatings on finished ferrous products. The Contractor is also required to
provide for the special treatments necessary to be carried out before application of the galvanization.
The pylons must be packaged by type and by height before proceeding to reception of the
galvanization by ONEE.
For the paint system proposed, it must be intended for galvanized metal structures installed outdoors
in coastal, Saharan and maritime areas with very high salinity {class C5M}.
The paint file to be provided by the tenderer for ONEE's approval must include:
The technical data sheets of the layers of paint,
An accelerated aging test report provided by a recognized laboratory justifying the CSM corrosivity class
for a high durability class (H) in accordance with ISO 12944 standards.
The thickness of the completely dry film of paint must be at least 140 micrometers. The minimum
number of coats of paint must be two coats respecting the required minimum thickness of the dry film
corresponding to the CSM corrosivity level.
The application of each of the layers must follow the supplier's operating mode, taking
account of climatic conditions. This procedure must be sent to ONEE before the start of the paint
application work.
Given the very severe climate of the SOUTH region, the Contractor must:
Ensure the storage of the package pylons in its depot in good conditions in order to guarantee their
protection against external agents (humidity, salty air, sandstorms, etc.). Take all the necessary steps to
proceed with the application of the first coat of paint at the factory or, where applicable, the application
of the paint system immediately after the assembly of each pylon in order to avoid the formation of
oxidation of the galvanization.
It is understood that the application of the paint system will be conditional on the receipt of the surface
condition of the pylons by ONEE. These must be well cleaned in accordance with the operating
procedure of the paint supplier. Acceptance of the painting works should be done in the presence of
ONEE to check the quality of application and the average thickness of the paint.
The "anti-climbing fenders" and the "skull" figurine attached to the metal pylons will be painted bright
red.
2.3.6.- Reinforcement of the watertightness at the level of the diamonds of the massifs:
The section concerned by the waterproofing reinforcement is "Guelmim - Hagounia".
The bases and foundations will be coated with a cold-applied liquid rubber sealant (by low-pressure
spray, roller or brush) for waterproofing and protection against erosion and corrosion.
Technical characteristics :
These products must comply with the following specifications:
• Product based on liquid rubber
• Minimum thickness of 2.0 mm
• Min tensile strength: 200 N
• Elongation at break: 45%
• Immediate watertightness.
• Protection against corrosion and adhesion in rust.
• Thermal stability: -40°C to +100°C (Resistance to high and low temperature effects)
• Resistance to erosion by sandstorms: 350 kPa.
• Resistance to aging due to humidity
• Puncture resistance
Product Warranty Durability:
The behavior of the waterproofing product must be guaranteed for a period of five years from the final
acceptance.
Any flaking involving the adhesion of the coating will not be tolerated during the warranty period.
The application of the product warranty entailed the repair of the coating in question. It includes, in
addition to the implementation of the means necessary for this repair, the restoration of the solid
masses and bases, the supply and the application of the products.
Marking:
Each container must bear a label containing all the elements necessary for its identification:
• Manufacturer's name and trade name and classification;
• Manufacturing date and number and expiry date;
• Product color and reference number;
2.3.7 - Mechanical tests:
Mechanical tests will be carried out - according to the standards in force and at the expense of the
contractor - by an approved laboratory on samples of angles, gussets and bolts.
These samples will be chosen by ONEE representatives from a batch of pylons (galvanized) presented for
receipt of galvanization.
said tests must be sanctioned by one or more test reports giving the methods and sanctions of the tests
accompanied by a certificate of conformity if all the tests are conclusive.
2.3-8- Distribution of pylons:
The Contractor must check the mechanical strength of the pylons and cables in the most unfavorable
hypotheses.
The Contractor must ensure compliance with the regulatory distances in accordance with the geometric
calculation rules of the “LHT Directives”.
The longitudinal profiles with distribution will be provided with the PLSCADD calculation notes to ONEEBE for validation.
The Contractor must provide "the bak up" of the PLSCADD file (.pfl) and (.xyz) of the distribution on CD
ROM to ONEE.
The approval of the longitudinal profile plans by ONEE in no way diminishes the responsibility of the
Contractor ---------- for the mechanical strength of the pylons, which remains intact.
.4- Doubling blocks for conductive cable:
The doubling blocks must meet all the requirements, which are not contrary to them, provided for in the
reference standards, namely:
- NF EN 61284: Overhead lines Requirements and tests for equipment.
- Appendix Fa of standard NF EN 61 284: normative documents recommended by materials
equipment materials.
Doubling blocks must be Aluminum;
Intended for AlmeJec cable with sections of 570 mm2;
With mechanical clamping for connection of two Almelec conductors. It consists of two jaws with
parallel grooves and a cigar with superimposed groove. The jaws and the cigar are joined by the
intermediary of 04 flanges, at least, with six nuts and washers;
Lining blocks withstanding ambient temperatures between - S° C and + 55° C, humidity of 90% at 20° C
and being insensitive to the effects of condensation, rain, rapid changes in temperature and solar
radiation;
The doubling blocks must include a marking coming from the molding or by indelible ink, allowing their
identification, the elements of marking are the following:
o The brand, logo or name of the manufacturer.
o The reference or the type.
o The date of manufacture indicating the month and the year.