RFQ 29/2021

PROVISION OF SERVICES FOR BOILER PLANT CHAIN GRATES MAINTENANCE AT MUNYATI POWER STATION

 

Zimbabwe Power Company invites your company to make a firm offer for the supply and delivery of the following items at Munyati Power Station.

 

PRICE SCHEDULE TO BE COMPLETED BY ALL BIDDERS WITHOUT FAILURE

 

Item

Description

Quantity

Total Price

1

Provision of Service for Boiler Plant Chain Grates Maintenance as per the attached specifications

-

 

2

Vat on contract sum

 

 

3

TOTAL

 

 

 

 

Manner of Submission

 

Tenders must be enclosed in sealed envelopes and endorsed on the outside with the above mentioned tender number, tender description and tender closing date.  Tenders must be received at ZPC on or before the closing date or delivered by hand to THE TENDER BOX, to the attention of The Power Plant Manager, Zimbabwe Power Company, Munyati Power Station, P.O Munyati, Munyati or emailed to dmanjengwa@zpc.co.zw or emutema@zpc.co.zw.  Tenders must be received on or before the closing date.

 

Offers not received by 10:00 hours on the closing date will be treated as late tenders, rejected and returned to tenderer.

 

Last date of submission is 15/01/21 at 10:00 hours

 

 

 

 

 

 

 

 

 

 

 

 

 

YOUR OFFER SHOULD CLEARLY INDICATE THE FOLLOWING:

 

  1. Bidders respond to the specification on a line by line basis without failure.
  2. State Validity of your offer from closing date (minimum accepted bid validity is 90 days).
  3. Bidders are required to complete the price schedule.
  4. Bidders are required to provide a reference letter for similar works within the past five years.
  5. Bidders must provide CR 14 - List of Directors.
  6. Bidders must attach proof of Procurement Regulatory Authority of Zimbabwe registration in the form of Government Gazette - Service Category S/P/004 Plant & Equipment Maintenance Services.
  7. Bidders must state acceptance of the following payment terms
  1. No advance payments will be made for orders below US$500,000. Payment for services rendered will be made 30 days after work execution & certification. (Bidders must state acceptance of these payment terms without failure).
  1. Bidders must provide lead time/delivery period from receipt of official order – required lead time/delivery must be one (1) week or better.
  2. Bidders must provide a reference letter with traceable contact details of similar works or related works.

 

NOTE: Bidders must note that if they put more than one option only their main offer will be evaluated.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

  1. TECHNICAL SPECIFICATIONS

1.1    CHAIN GRATE REPAIRS

The Contractor shall be called out to repair chain grates in the event of failure. Common failures are grate jams but any other failure can occur resulting in the outage of the affected boiler. In such cases ZPC shall run off fires and the contractor is expected to:

1. Investigate and identify the cause of failure

2. Carry out repairs to the chain grate by;

  1. Removing apron covers from the front of the furnace
  2. Stripping links from the grate.
  3. Removal of burnt or bent bulb bars.
  4. Replacement or repair of any damaged bulb bars, chains or any other part.
  5. Replacement of the links, tuck welding of bolts and boxing up of removed covers.
  6. Remove and replacement of dumping bars.
  7. Commission the grate by running it under monitoring for at least 2hours
  8. Hand-over the plant to ZPC.
  9. Produce post works report showing work done and any relevant plant history

     

1.2    GRATE OVERHAULS

Using the provided spares the Contractor shall carry out an overhaul of the main chain grate by;

  1. Stripping the old top stoker static and dynamic components.
  2. Stripping of the under-grate stocker static and dynamic components.
  3. Complete overhaul of the mechanical grate drive system.
  4. Removal and replacement of any structural parts of the stocker and in the under-grate where necessary.
  5. Complete overhaul of the scrolls.
  6. Reassembling of the whole grate system
  7. Running in of grate for at least 24hours
  8. Hand-over the Plant to ZPC.
  9. Produce post works report showing work done and any relevant plant history

 

     

 

1.3    DUMPING BAR RACK REPAIRS

The contractor shall be called out within 8hours of a failure, to work at the rear interior of the boiler furnace to repair the structure upon which ash dumping bars are mounted. This being a hot confined space the Contractor shall supply all heat or fireproof protective clothing to their workmen.

The job involves:

  1. Removal of ash dumping bars from the damaged rack.
  2. Demolition of refractory material to expose the steel works of the rack
  3. Disassembling of the rack by cutting of bolts using a cutting torch
  4. Marking out and drilling of flat bars and any of the cast iron frames which form the structure.
  5. Assembling of the rack and securing
  6. Insulation of the rack steel-works using provided refractory materials.
  7. Housekeeping of the work area.
  8. Replacement of ash dumping bars onto the rack
  9. Produce post works report showing work done and any relevant plant history      

 

1.4    PRICING

The Contractor is required to submit man hour rates for the trades in the table below:

1.4.2 Man Hour Rates

LABOUR

HOURLY RATE (ZWL$)

  1. Supervisor

 

  1. Artisan

 

  1. SHERQ Officer

 

  1. Skilled Worker (Trade tested with no tertiary qualifications)

 

  1. Unskilled Labour

 

Any other jobs not included in the defined scope shall be paid using man-hour rates.

Work shall be done on the basis of a fixed quotation provided from the available scope of work. The contractor shall only do work whose cost has been agreed on by both parties. No work shall be done without authorisation from ZPC, as this won’t be paid for.

 

Posted:13 January 2021
Closing date:15 January 2021
Station:Munyati Power Station

If you are interested in this tender, please visit the ZPC offices to collect the tender documents. A fee of $10 applies.

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