Cleaning of Water Tanks

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Tender No: RFQ-1022-2025-12-175508

Briefing Meeting: 2026-02-11 11:00

Tender Closing Date: Tender Closed on: 2026-02-18 16:00

Required At: Department of Health Western Cape

Required CIDB Rating: 1 GB

Tender Category: Cleaning Services, Industrial and Plant Cleaning Services, Tank, Pipeline, Drain, Grease Trap and Stormwater Cleaning

Tender Location: Paarl, Western Cape

Tender Department/Company: Western Cape - Department of Health

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Tender Notice and Invitation to Tender
Cleaning of Water Tanks
Employer Tender Number: RFQ-1022-2025-12-175508
cidb Reference Number: 100113470

DEPARTMENT OF HEALTH WESTERN CAPE INVITES TENDERS FOR SCOPE OF WORK:
CLEANING OF WATER TANKS
LOCATIONS:
GROUNDS - CALORIFIER ROOM X6,
7TH FLOOR PLANTROOM X3
THEATRE PLANTROOM X5
HEAT PUMPROOM X3

SCOPE/SPECIFICATIONS
(1) PROJECT LEADER TO MAKE DRAWINGS OF OPENED/CLOSED VALVES BEFORE WORK COMMENCES - TO ENSURE
THAT ALL VALVES ARE IN THE SAME POSITION WHEN THE WORK IS COMPLETED
(2) EACH TANK VALVES CAN BE CLOSED & OPENED SEPARATELY
(3) CHECK VALVES & PIPES FOR ANY LEAKS
(4) CHECK SLUDGE LEVEL AND SEDIMENT INTERNAL CLEANLINESS OF EACH TANK
(5) DRAIN WATER BY OPENING VALVE AT BOTTOM OF TANK AND CLEAN TANKS WITH A SABS APPROVED LIQUID THAT
WILL NOT HAVE A NEGATIVE EFFECT OR SMELL WHEN CLEAN WATER IS FILLED IN TANKS
(6) FIT A TEMPORALLY/MAKESHIFT PIPE TO THE WASTE OUTLET TO LET DRAINED WATER RUN INTO STORMWATER DRAIN
(7) THE COMMON WAY OF DISINFECTING A TANK IS BY CHLORINATION
(8) CHLORINE CAN BE DELIVERED IN HIGH STRENGTH CALCIUM HYPOCHLORITE (HSCH) WHICH WHEN MIXED WITH
WATER LIBERATES 60 TO 80% OF ITS VOLUME AS CHLORINE
(9) ENSURE THE RIGHT AMOUNT OF CHLORINE IS NEEDED TO DISINFECT EACH TANK
(10) SPECIAL CARE MUST BE TAKEN WHEN CLEANING CORNERS AND JOINTS AND WASTEWATER MUST BE DRAINED TO
PREVENT WATER FROM OBTAINING BAD TASTE. LEAVE OUTLET VALVE OPEN WHILE CLEANING EACH TANK
(11) TANKS MUST BE CLEANED PROPERLY BEFORE CLEAN WATER IS POURED INTO TANKS
(12) PROJECT LEADER TO INSPECT TANKS PRIOR TO FILLING THEM WITH CLEAN WATER
(13) ONLY ONE TANK TO BE CLEANED/DISABLED/EMPTIED AT A TIME
(14) WHEN FILLING TANKS WITH CLEAN WATER A QUARTER FULL SPRINKLE 80 GRAMS OF GRANULAR CALCIUM
HYPOCHLORITE (HSCH) FOR EVERY 1000 LITERS TO TOTAL CAPACITY OF TANK. IF TANK IS REQUIRED URGENTLY,
DOUBLE THE QUANTITY OF CHLORINE TO REDUCE THE TIME OF DISINFECTION FROM 24 HOURS TO 8 HOURS
(15) ENSURE LID IS SEALED PROPERLY AND LEAVE TO STAND 24 HOURS
(16) SUPPLY NEW GASKETS TO EACH TANK AND TO BE SHOWN TO THE PROJECT LEADER, BEFORE WORK COMMENCES
(17) SUPPLY X2 SPARE GASKETS FOR EACH PLANTROOM AND HAND THEM OVER TO PROJECT LEADER
(18) NEW BOLTS AND NUTS TO BE INSTALLED AND RETURN OLD BOLTS AND NUTS TO PROJECT LEADER
(19) DO NOT ADJUST ANY THERMOSTAT, GUAGES AND SENSORS
(20) BIDDERS TO MAKE PROVISION FOR PIPING TO LEAD WATER TO NEAREST DRAIN/OUTLET

REQUIREMENTS FOR THIS PROJECT:
·

CHEMICALS USED TO BE ISO STANDARD ACCREDITED, ENVIRONMENTALLY FRIENDLY AND TO BE PROPERLY

Page: 2

LABELED. SEALED CONTAINERS TO BE APPROVED BY PROJECT LEADER BEFORE WORK COMMENCES
It is estimated that tenderers should have a cidb contractor grading of 1GB or higher.
Preferences are offered to tenderers who IS A BBB-EE STATUS LEVEL CONTRIBUTOR
Only tenderers who N/A are eligible to submit tenders.
Please note:
Tender documents is available for downloading on EPS
Prices should be uploaded on EPS
Queries relating to the issues of these documents may be addressed to:
Carl Smit
Tel No. 0218602856
E-mail. [email protected]
or
Gregory Abrahams
Tel No. 0218602797
E-mail. [email protected]
A compulsory clarification meeting with representitives of the Employer will take place at 10 HOSPITAL STREET LEMOENKLOOF
PAARL 7646 on 11 February 2026 starting at 11h00.
The closing time for receipt of Tenders is 16h00 on Wednesday, February 18, 2026.
Emailed and Late Tenders will not be accepted.
Tenders may only be submitted on the tender documentation that is issued.
Requirements for sealing, addressing, delivering, opening and assessment of Tenders are stated in the Tender Data.

Page: 3

Additional Information:
Employer Name: Department of Health Western Cape
Province: Western Cape
Municipality: Cape Winelands District Municipality
Closing Date: 2026-02-18 16:00
Site Meeting: Yes
Briefing Date: 2026-02-11 11:00
CIDB Class: 1 GB
Subcategory:
Documents Available from: 04 February 2026

Tender Summary

Objectives

The primary objective of this tender is to procure services for the cleaning and disinfection of water tanks at specified locations within the Department of Health Western Cape. The process aims to ensure that water tanks are properly cleaned, disinfected, and maintained to prevent contamination and ensure water quality standards are met.

Scope

The scope of work includes:

Making drawings of opened/closed valves before work begins to ensure valve positions are restored post-cleaning.
Closing and opening tank valves individually.
Checking valves and pipes for leaks.
Assessing sludge levels and internal cleanliness of each tank.
Draining water and cleaning tanks with approved, environmentally friendly liquids.
Fitting temporary pipes for waste water drainage.
Disinfecting tanks using chlorination with calcium hypochlorite, ensuring proper chlorine levels.
Cleaning corners and joints thoroughly, draining wastewater to prevent bad taste.
Inspecting tanks prior to refilling and ensuring proper sealing and disinfection times.
Providing new gaskets, spare gaskets, bolts, and nuts, and installing new bolts and nuts.
Ensuring no adjustments are made to thermostats, gauges, or sensors.
Provisioning piping for water drainage.

Technical Requirements

The technical requirements for this project include:

Use of ISO standard accredited, environmentally friendly chemicals, properly labeled and sealed, approved by the project leader before use.
Proper disinfection procedures, including chlorination with calcium hypochlorite, with quantities adjusted for tank size and urgency.
Sealing lids and allowing tanks to stand for 24 hours post-disinfection.
Provision of new gaskets and spare gaskets for each plantroom.
Installation of new bolts and nuts, with old ones returned to the project leader.
Ensuring all work is conducted with care, especially in corners and joints, and wastewater is properly drained.
Provision for piping to lead waste water to the nearest drain/outlet.
Compliance with all safety and environmental standards.

Skills Requirements

Eligible tenderers should possess:

A cidb contractor grading of 1GB or higher.
Experience in tank cleaning, disinfection, and related plumbing works.
Knowledge of environmental and safety standards related to chemical handling and water tank maintenance.
Ability to prepare and follow detailed drawings and procedures.
Capacity to supply and handle approved chemicals and spare parts.

This summary is AI generated. Download the tender documents for all the information.

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