RFQ Number | Items Required | Qty | Date Posted | Closing Date | Closing time |
PR10241151
RQ22112935 |
Creososte Treated Wood Pole 12,6m in accordance with SAZ 120 |
52
|
07/12/2022 | 12/12/2022 | 10:00 am |
Creasoste Treated Wood Xarm
1850mm in accordance with SAZ 120
|
36 | ||||
KINDLY FIND DETAILED SPECIFICATIONS ON OUR ZETDC WEBSITE |
TECHNICAL SPECIFICATION 1.Introduction- This specification calls for the supply and delivery of wood poles and cross arms. The Supplier shall state name, country and Estate of growth. The Supplier shall state compliance or non-compliance with the specification for all clauses in the specification. 2. Standards, Units and Language All tenders correspondence and all description upon drawings, illustrations or instructions shall be in unambiguous English Language. SI units of weights and measurements shall be used throughout. The poles and cross-arms shall all be tagged with Certification mark of the Standard being followed. The specification covers quality requirements for Eucalyptus poles that are treated with creosote, a mixture of creosote and waxy oil, and are intended to be used as upright supports and cross arms for power distribution lines and associated equipment. The Pine poles (55 MPA- strength) are also acceptable. 3. Strength Group and Species- Tenderers are required to state the species, approximate average age and the area where grown, i.e. the Estate and Section, of the trees from which poles and cross arms are to be provided. 4. Banding- Poles and cross arms must be banded by the use of galvanized steel strapping, secured by galvanized nails, as standard practice. The use of any alternative banding is subject to prior approval. Banding of poles to be treated with creosote mixtures shall be carried out before impregnation. The coating of the galvanized wires shall comply with the requirements for galvanized coating of SAZ, IEC, SABS and BS standards. 5. Cross-Arms- Cross arms shall be supplied with ends cut square, and to length and diameters in accordance with stated Tender requirements, and ZESA Drawings where applicable. 6. Labelling a)Labelling to be as detailed in the provided table below and, identification tags to denote length and diameter, must be firmly fixed to both ends of all transmission poles after preservative treatment. The size of the colored plastic tags shall approximate to 4 cm in diameter. TRANSMISSION POLE
7. Supplementary Requirements 7.1 Preparation of Timber a) Trees shall be barked immediately after felling. Bark is to be removed completely leaving no strands of inner bark on the stem. b) Felled trees are not to be cross-cut, but the crown and upper part of the stem shall be removed provided the upper part of the stem removed does not exceed in diameter. All excessive protuberances shall be removed immediately with a clean cut, flush with the stem. c) Incisions made by axes, barking and other cutting tools, cause affected outer layers to rupture and peel off in service, therefore poles damaged in this manner will be rejected. d) Poles with occluded bark within 2 meters of the butt and at other points where it is likely to impair impregnation, will be rejected. 7.2 Seasoning a) Felled trees shall be left lying in the plantations under shade in such a manner that each tree is lying free and adequately supported clear of the ground to avoid sweep. b) Where it is desired to remove felled trees from the plantation to elsewhere, they must be open stacked in shade. This shade must be open to free air movement. c) Felled trees shall be left lying or stacked for at least five months before cutting to length, unless an alternative method has been specifically approved by the Authority. 8. Preservative Treatment 8.1 General Immediately prior to treatment the moisture content shall not be more than 25% based on the oven-dry method. 8.2 Preservative a) High temperature Creosote, preferably to the American Wood Preserver’s Association Specification shall be used. This shall be mixed with diesel fuel oil. b) Other-types of Creosote may be considered and only to be used after approval by the Authority. c) When called for, samples of Creosote and diesel Fuel oil to be used in the preservative process shall be submitted to the Authority for purposes of analysis. 8.3 Process a) Impregnation shall be carried out by the full cell pressure process. b) When the pressure tank process is used, it shall be the Authority’s approval and details of the proposed process shall be submitted to the Authority as early as possible before commencing treatment. 8.4 Type of Preservative Required a) Creosote that complies with SABS 539 or a wood preserving mixture that complies with the requirements of SABS 1290 or b) Creosote that complies with SAZS 120:1990, clause 3.9.2.1 c) Creosote that complies with BS and IEC standards. 8.5 Inspection Report Treatment charge sheets including sample tests must be submitted for each batch of poles or cross arms. 9. Production Capability/ Award Criteria Bidders shall state their production capability per year for each size of wood poles. ZETDC will evoke penalty charges for poor deliver as per ZETDC General Conditions of Contract. The successful Bidder shall be capable of supplying at least one twelfth of the required quantities per month. If the lowest Tenderer is not able to supply the required quantities, he will be awarded the Contract to supply the quantities he is capable of supplying, with the Contract to supply the balance being awarded to the next lowest Tenderer. TECHNICAL GUARANTEE SCHEDULE
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