ZIMBABWE ELECTRICITY TRANSMISSION
MARONDERA CLIENT SERVICE CENTRE
REQUESTS FOR QUOTATIONS (RFQs) TO RECOVER COPPER ON MARONDERA TOWN MV OVERHEAD LINES AND RE-STRING THE LINES WITH ALUMINIUM CONDUCTOR.
|RFQ 20/17||Recovery of copper conductor and re-string with aluminum conductor –Marondera Wiston Park MV lines||4.5|
SPECIFICATION FOR COPPER REPLACEMENT WORKS ON MV DISTRIBUTION OVERHEAD POWER LINES
Closing 24 February 2017, 10:00am
PART I PRELIMINARY
- Interpretation of terms ………………… 1
- Application of specification …………… 2
- Citation ………………………………… 2
PART II BIDDING INSTRUCTIONS
- Bid content ……………………………… 3
- Bidding conditions ……………………… 4
- Determination of responsiveness ……….. 4
PART III TECHNICAL SPECIFICATIONS
- Conductor recovery and restringing ……… 6
PART IV PROGRESSION OF WORKS
- Allocation of reconductoring materials …… 7
- Implementation programme ………….….. 8
- Camp management ……………….……… 8
- On-the-job supervision ………..…………. 9
- Damage to property ……………………… 9
- Work inspection …………………………… 10
- Work completion and maintenance period .. 10
PART V PAYMENT TERMS
- Payment determination …………………… 11
- Unsatisfactory work performance ………… 11
- Permissible deductions ……………………. 12
- Schedule of quoted copper replacement costs.
- Schedule of contractor’s available copper replacement staff.
- Schedule of contractor’s available copper replacement equipment.
- Schedule of contractor’s available copper replacement transport
- Schedule of contractor’s previous experience in similar work.
PART I PRELIMINARY
- INTERPRETATION OF TERMS
The following meanings shall attach to the terms below, in the context of this Specification.
1.1 Employer means the Zimbabwe Electricity Transmission and Distribution Company [Northern Region].
1.2 Contractor means a successful tenderer who has negotiated a functional contract with the employer in terms of this Specification.
1.3 Contractor’s Field Representative means an official of the Contractor so designated by the Contractor and made known to the Employer by the time of the conclusion of contract negotiations, who shall be the contractor’s field contact person, and who shall communicate on behalf of the Contractor requests for Employer work progress inspections and work measurements, and on any other field-related matters.
1.4 Employer’s Field Representative means an official of the Employer so designated by the Employer and made known to the Contractor by the time of the conclusion of contract negotiations, who shall be the Employer’s contact person for all contract field work and related matters, and who shall receive and attend to requests by the Contractor for work progress inspections and work measurements.
1.5 Contractor’s Management Representative means an official of the Contractor so designated by the Contractor and made known to the Employer by the time of the conclusion of contract negotiations, who shall subsequently communicate on behalf of the Contractor on contract general administrative and financial matters, and on any other incidental matters.
1.6 Employer’s Management Representative means an official of the Employer so designated by the Employer and made known to the Contractor by the time of the conclusion of contract negotiations, who shall subsequently communicate on behalf of the Employer on contract general administrative and financial matters, and on any other incidental matters.
1.7 Agreement of Contract means the formal expression in writing of the agreed terms of contract, duly signed between the Employer and the Contractor, defining the work for which the contract is subject, and outlining specific payment arrangements, and elucidating any other incidental matters relating thereto.
- APPLICATION OF SPECIFICATION
2.1 This Specification applies to work to replace copper conductor with aluminium conductor by an External Contractor for and on behalf of the Employer, on MV lines and/or 33kV and/ or 11kV overhead distribution power line(s) in geographic areas falling under the respective jurisdictions of customer service centres under Marondera District Network, as the case may be.
2.2 The scope of work covered shall entail re-conductoring of network, as specifically required to be quoted for in terms of requirements given in Schedule 1. Copper sections requiring to be replaced by aluminium sca conductor will have been identified.
2.3 Notwithstanding the provisions of section 5.3, this Specification shall, unless otherwise provided for in the Agreement of Contract, prevail over any other document, agreement or arrangement whatsoever, and in the event of any inconsistency, such other document, agreement or arrangement shall, to the extent of such inconsistency, be construed with such modifications, qualifications, adaptations and exceptions as may be necessary to bring it into conformity with the provisions of this Specification.
This ‘Specification for Copper Replacement Works on MV ,33kV and 11kV Northern Region Distribution Overhead Power Lines’ may be cited as the ‘Specification for Northern Distribution Re-conductoring Work’ and shall, in such circumstances, be taken to mean the specification provisions contained herein.
PART II BIDDING INSTRUCTIONS
- BID CONTENT
4.1 The work for which Tenderers are to quote for is described in the Schedule of requirements (Schedule 1). In quoting for the fulfilment of Schedule 1 requirements, Tenderers should indicate their offered unit costs and total costs as relevantly informed and guided by the Employer’s standard designs and specifications illustratively depicted through the map, drawing and diagram data furnished in Schedule 6. Tenderers are required to counter-check quantities made reference to, as appropriate, and quote on that basis.
4.2 Since the construction of lines differs, depending on the voltage level and type of construction, specific drawings for a particular Contract will provide constructional specifics in respect of pole components assembly, excavation dimensioning, conductor configuration, phase spacings, span lengths, and the like. It shall be the Tenderer’s responsibility to see to it that requisite drawings together with the Schedule of requirements, as mentioned in Clause 4.1 above, are available. In the case of such drawings missing or getting lost, Tenderers can collect these drawings from the office of the Procurement Officer, domiciled at ZETDC Northern Regional Office, Megawatt House, Stand No. 5310 North Drive, Chinhoyi.
4.3 It is mandatory for tenderers to submit details of available re-conductoring staff (Schedule 2), available re-conductoring equipment (Schedule 3), available re-conductoring transport (Schedule 4), as well as past experience in similar work (Schedule 5). Each team shall be led by a qualified (certified) linesman. Under no circumstances shall work be carried out on lines without a qualified (certified) linesman in charge. NB* If a bidder is to tender for all works (projects) the resources committed to a specific feeder should be distinct with the resources committed to the other projects.
4.4 It should be importantly noted that works in the different districts/areas as put out to tender will be expected to be conducted simultaneously. Consequently, should a Tenderer wish to bid for re-conductoring work in more than one district/area, then separate and distinct work resources in the form of manpower, equipment and transport should be offered for the separate district /area works.
4.5 Bids submitted in breach of the information completion requirements of Clauses 4.1, 4.3 and 4.4 above shall be deemed to be non-responsive and shall therefore not be considered.
4.6 Where the Employer requires the Contractor to carry out any work not specified in the original Schedule of requirements (Schedule 1), the Contractor shall submit his rates, which should be approved by the Employer, as represented by the Employer’s Management Representative, before the work is carried out. NB* However it is the employer’s duty to sees that all maintenance works are done before the commencement of the copper recovery project (i.e way leave and pole change e.tc).
- BIDDING CONDITIONS
5.1 All tender correspondence shall be in English.
5.2 Standard S.I units shall be used throughout all processes relating to this Specification.
5.3 The successful Tenderer shall adhere to ZESA General Conditions of Contract, 1987 as amended, which may be obtained from the Procurement Officer at ZETDC Northern Regional Office, Megawatt House, Stand No. 5310 North Drive, Chinhoyi, at a specified non-refundable fee.
5.4 It will be assumed that the prices given are for all work which can reasonably be expected to be done to enable the specified pole replacement work to be successfully completed to the expected standards and will be fixed for the duration of the Contract, except for labour and transport rates, which should be according to Statutory Instruments, and should be verified.
5.5 All tenders shall be either posted or deposited in the Tender Box located on the ground floor of ZETDC Northern Regional Office, Megawatt House, Chinhoyi, and shall be in a sealed envelope clearly marked with the advertised tender number and description as well as the tender closing date, as fully specified in the Tender Invitation document.
- DETERMINATION OF RESPONSIVENESS
6.1 Prior to the detailed evaluation of Tenders, the Employer will determine whether each Tender is substantially responsive to the requirements of the Tender Invitation Document.
6.2 For the purpose of Clause 6.1, a substantially responsive Tender is one which will conform to all terms, conditions and specifications of the Tender Document without any material deviation or reservations.
6.3 A material deviation or reservation is one which affects in a substantial way the price, scope, quality, completion timing or administration of the works undertaken by the Tenderer under the contract, or which limits in a substantial way, inconsistent with the Tender Document, the Employer’s rights or the Tenderer’s obligations under the Contract and the rectification of which would affect the competitiveness of other Tenderers who would have presented substantially responsive Tenders at reasonable prices.
6.4 A Tender determined to be substantially non-responsive will be rejected by the Employer and may not subsequently be made responsive by the Tenderer by correction of the non-conformity.
6.5 The Employer may, at its sole discretion, accept any non-material deviation or reservation provided that the acceptance thereof does not prejudice or affect the relative ranking order of any Tender in the evaluation of Tenders.
6.6 The Employer will evaluate and compare only those Tenders determined to be substantially responsive to the requirements of the Tender Invitation Document. The evaluation will take into account, in addition to the Tender Prices, any Arithmetic errors corrected by the Employer, any non-material deviations or reservations of the Tender Invitation Document that are not quantifiable, any appropriate adjustments for acceptable quantifiable variations, deviations not reflected in the Tender Prices, and other factors of a technical, financial, contractual or administrative nature as the Employer considers may have a potential impact on the Contract execution, including the effect of item or unit rates that are unbalanced or unrealistically priced.
PART III TECHNICAL SPECIFICATIONS
- CONDUCTOR RECOVERY AND RESTRINGING
7.1 The Contractor shall recover copper conductors from indentified line sections and subsequently restring aluminium conductors as provided on the same line sections.
7.2 Conductors shall be run out from either drums mounted on trailers or drum stands. The conductors shall be strung using pulleys mounted on each pole. Care shall be taken to avoid bird-caging kinks or abrasions of any sort on the material. Minor damage shall be repaired with a repair sleeve. Where damage is severe the affected portion shall be cut off and a suitable joint inserted. The cost of length and jointing material shall be deducted from the amount due to the Contractor.
7.3 The maximum tension on the conductor shall not exceed 40 per centum of the ultimate tensile strength and the wind loading shall be assumed to be 58.6 kilogrammes on 60 per centum of projected area. Conductors shall be strung to the appropriate charts, without pre-stretching and using the correct equivalent span for each section. The sag charts will be provided by the Employer to the Contractor.
7.4 Conductor shall be cut and made off at tension structures with sufficient lengths carried through the clamps to provide for jumper connections to be made with the requisite phase to earth clearance provided for conductors as specified.
7.5 In installing earth wire on a wooden pole, it should be fixed onto the surface of the pole. All metal work, stays and neutral conductors, as relevant, shall be connected to this earth wire. The insulator spindles and D-irons shall be earthed by wrapping the earth lead round the spindle or bolt before tightening the respective nut.
7.6 To avoid stressing line materials and component parts, the Contractor shall provide and make full use of sufficient temporary stays at all points such as at section points during the process of stringing when such structures are subjected to excessive loading for a limited period.
7.7 At telecommunication lines, railway lines, power lines and major road crossings, the Contractor shall conform to the requirements given in the current Electricity Supply Regulations. The Employer will provide materials for cradles where required. It will be necessary to shutdown existing power lines before conductors or earth wires are strung at crossing points. Such work shall be carried out only under the supervision of the Employer, through the Employer’s Field Representative, and the Contractor shall give a minimum of ten days clear notice, on Form CR01, of the date on which each crossing will be effected.
PART IV PROGRESSION OF WORKS
- 8. ALLOCATION OF RECONDUCTORING MATERIALS
8.1 The Contractor shall collect all materials for carrying out the awarded Works from the Employer’s stores, the Employer’s customer services centres, or railway sidings as indicated in the Schedule of requirements, as and when required. The modalities and procedure for material requisition shall be advised by the Employer to the Contractor.
8.2 It must be clearly understood by the Contractor that considerable delays may be experienced regarding the provision of materials required for the completion of the Project. Every effort would be made to at least have all materials available when required at the appropriate collection site.
8.3 If materials as necessitate the completion of the Project are not available, and the Contractor is in a position to provide such materials so as to complete the Project on time and within budget, then the Contractor may provide such materials and the Employer will then return the materials to the Contractor, once in its stock. The Employer will assume it has borrowed the materials from the Contractor.
8.4 In the event of having commenced the work and the route selection, survey and bush clearing having been completed, the Contractor has to withdraw from site owing to non-availability of materials, re-establishment charges will not be accepted, nor will claims for standing time be allowed.
8.5 A list of all materials supplied by the Employer will be issued to the Contractor upon request.
8.6 All materials must be checked by the Contractor with the Employer’s Field Representative, and signed for by him before removal from the supply point (i.e. customer services centre or stores). Any damage or faulty material which requires replacement must be pointed out at the time of acceptance. The Contractor will be held responsible for the safety of all material once it has been accepted from the Employer’s Field Representative.
8.7 Under no circumstances must damaged material be used. Material damaged by the Contractor must be shown to the Employer’s Field Representative for replacement at the Contractor’s expense.
8.8 The Contractor is responsible for transporting material from collection points to the work site. For such heavy items, as for conductor in this case, arrangements can be made to rail such items to the nearest siding, such arrangements being to the Contractor’s account.
8.9 Upon completion of the Contract, all surplus material shall be transported back to the Employer’s collection points, or as shall be instructed, and handed over with a complete list and signed for by the Employer’s Field Representative.
- IMPLEMENTATION PROGRAMME
9.1 The Contractor shall submit to the Employer’s Management Representative an outline working programme showing estimated timings for the various stages in the progress of work. It should be noted that time is of essence in the execution of the Contract.
9.2 The Contractor shall also be required to submit progress reports at a frequency to be advised by the Employer’s Management Representative.
- CAMP MANAGEMENT
10.1 Should the Contractor wish to set up a staff camp on any property, he shall first obtain written authority to do so from the Occupant of such property, and at the same time shall keep the Employer informed in writing of any such arrangements.
10.2 Camps shall be run under the overall strict control of the Contractor’s Field Representative, who shall be available when required to handle the movements of labour to prevent trespass and to protect the interests of the occupant or owner.
10.3 On vacating a camp site, the Contractor shall ensure that the site is left in a state as presentable as practicable and that no debris, garbage or other surplus materials is left strewn about.
- 11. ON-THE-JOB SUPERVISION
11.1 The Contractor shall provide on-the-job supervisors, the details of which should be given in Schedule 2.
11.2 Further to the foregoing, the Contractor shall have in place a duly appointed and properly designated Contractor’s Field Representative to ensure effective work co-ordination on the ground. The Contractor’s Field Representative shall have such responsibilities and exercise such authority as relevantly defined.
11.3 The reconductoring work should proceed at the work rate specified by the Contractor and assented to by the Employer, as reflected in the Agreement of Contract.
17.4 The Contractor shall ensure adequate on-the-job supervision at all times and shall institute necessary precautions during excavations, stringing of conductor and earth wire across roads, between stands, communication and power lines to prevent dangerous conditions arising. Further to this responsibility, the Contractor shall be liable for and shall indemnify the Employer against any claim that may arise from death or injury to persons, damage to property, or loss of livestock or domestic animals, occasioned by execution of the Contract.
- 12. DAMAGE TO PROPERTY
12.1 The Contractor shall be responsible for the maintenance of fences, perimeter walling and premise gates to the satisfaction of property owners. Upon completion of the work all fences, perimeter walling and premise gates shall be left in the same condition as they were found.
12.2 Due caution shall be exercised to avoid damage to private property, where the overhead line passes through valuable orchards, exotic tree plantations or other plantations. Similar caution should be exercised with respect to Employer property.
12.3 Subject to any superceding provisions, the Contractor shall make every effort to cause minimal environmental damage to adjacent forests or woodlots, but at the same time attaining the required width of clearance.
12.4 In the event of failure to properly restore physical infrastructure, or of damage caused on private property, the Contractor shall have the first option to effect necessary remedies or repairs to the satisfaction of the property owner, failing which the employer shall carry out the necessary remedies or repairs and thereafter procedurally claim recompense from the Contractor.
12.5 Where damage has been caused on Employer physical infrastructure, the Employer shall, without recourse to the Contractor, effect the necessary repairs and thereafter claim recompense from the Contractor.
- 13. WORK INSPECTION
13.1 Requests for the Employer to inspect and measure work done by the Contractor should be communicated in writing to the Employer’s Field Representative using Form CR02. A line section shall be the minimum quantum of wok measurement.
13.2 The Employer’s Field Representative shall check for work execution in accordance with this Specification and input his/her findings on the same form CR02. The completed form shall then be signed on site by both parties, each party retaining a copy thereof.
13.3 Expended Employer labour time and vehicle mileages during repeat inspections shall be signed for by both the Employer’s Field Representative and the Contractor’s Field Representative on Form CR02.
13.4 The Contractor should endeavour to only request work inspection services from the Employer when work in question has been satisfactorily done to specification. Re-inspection costs incurred by the Employer shall be recoverable from the Contractor.
- 14. WORK COMPLETION AND MAINTENANCE PERIOD
14.1 Upon work completion the Contractor shall, at his own expense, remove all rubbish, surplus materials and debris, unused material, temporary erections and equipment. He shall make the site and adjoining ground perfectly clean to the satisfaction of the Employer.
14.2 The Contractor shall make good any defects due to faulty or incorrect construction during a period of twelve calendar months from the date of acceptance of the work. For this purpose a sum representing five per centum of the Contract price shall be deducted from all payments and retained by the Employer until any defects, which may appear during the maintenance period, have been rectified.
PART V PAYMENT TERMS
- PAYMENT DETERMINATION
15.1 Payment will be effected for actual works done and completed in every required respect. Line construction work shall be deemed complete when all the work stipulated in the awarded Contract has been performed in accordance with this Specification, to the satisfaction of the Employer, through the Employer’s Field Representative, as recorded and signed for in Form CR02.
15.2 Rates of payment to apply shall be as specified in the Agreement of Contract.
15.3 Invoices shall be submitted to the Employer’s Management Representative in accordance with an invoicing mechanism to be stipulated in the Agreement of Contract.
- UNSATISFACTORY WORK PERFORMANCE
16.1 Where the Employer is not satisfied with the manner of work discharge by the Contractor, the Employer shall notify the Contractor in writing of the fact and of the reasons for the dissatisfaction, and shall give a grace period during which the stated material non-compliances should be remedied.
16.2 The Contractor’s Management Representative is entitled to make representations to the Employer clarifying the Contractor’s position vis-à-viz the assertions of unsatisfactory work performance, which the Employer should duly consider.
16.3 The Employer reserves the right to terminate the contract forthwith if, after the expiry of an allowed grace period, barring any contestation by the Contractor, the Contractor’s work performance remains unsatisfactory by way of failing to keep up to the work progress rate committed to or by failing to work to specification.
16.4 Upon contract termination by reason of unsatisfactory work performance, the Contractor shall be paid for the work already completed pro-rata, to the exclusion of the work not done to the satisfaction of the Employer.
- PERMISSIBLE DEDUCTIONS
17.1 Progress payments due to the Contractor shall be made less appropriate 5% (five per centum) retention fee, provisions for claims upon the Contractor for property damage, and less labour and transport costs incurred by the Employer for repeat work inspections requested by the Contractor. Charges for re-inspections shall be levied on the basis of prevailing Employer labour and transport charge-out rates. The current rates are obtainable without charge from the Procurement Officer at ZETDC Northern Regional Office, Megawatt House, Stand No. 5310 North Drive, Chinhoyi.
17.2 Where applicable, should the Contractor fail to complete the contract work together with any variation therefrom within the stipulated period, or within such extended period as may have been authorised, there shall be deducted from the Contract value as liquidated damages and not as a penalty, a sum not exceeding the rate of 1% (one per centum) of the contract value, for each and every week or part thereof between the time originally slated for completion of the works and the actual date of completion.
17.3 The amount deducted in accordance with provisions herein shall not in any case exceed the rate of 15% (fifteen per centum) of the contract value, and such deduction shall be in full satisfaction of the Contractor’s liability for the said failure.
REQUIRED COMPAMNY REGISTRATION DOCUMENTS
All bids should be accompanied by the following documentation;
- A fully detailed company profile
- VAT Registration certificate /VAT Number
- Current Tax clearance
- Letters of reference, copy contracts or copy orders from previous works of similar nature.
- Proof of membership of any recognized Engineering Institution.
- State Procurement Board Approval.
- Provide certificates for key personnel like linespersons and Engineers.
- Provide vehicle registration certificates for vehicles to be used under this programme/ feeder.
- State the types and quantities of tools and equipment to be allocated for the projects.
- State the composition/Strength of the line gangs/ feeder.
- All new prospective suppliers should complete the attached supplier application form.
SCHEDULE 1. PRICING SCHEDULE FOR RECOVERY OF COPPER CONDUCTOR (HDC) AND RE-STRINGING AND BINDING ALUMINIUM CONDUCTOR -(LABOUR AND TRANSPORT CHARGES)
|RFQ No||Name of Feeder||
(VAT INCLUSIVE)Total Estimated Cost (VAT INCLUSIVE)18/2017Marondera Paradise Park MV Lines
Price per km 19/2017Marondera Industrial Area MV Lines.
Price per km 20/2017Marondera Wiston Park MV lines
Price per km
Note: Unit price refers to the costs of replacing copper with aluminium per kilometer as specified in the scope of work (refer to sections 2, 7, 8 &9) .
- Quotations are submitted to the Procurement Officer, ZETDC Northern Region; Stand 5310 North Drive, Megawatt Building, Chinhoyi on or before 10.00 am on 24/02/2017. Clearly mark your bid and drop it in our tender box at the reception.
Schedule 6 ZIMBABWE ELECTRICITY TRANSMISSION AND DISTRIBUTION COMPANY NORTHERN REGION SCHEDULE OF MAPS, DRAWINGS AND DIAGRAMS Tender No. ____________________ Description _________________________________________________ Item No. Type Title/ Description of map, drawing or diagram