Annual Maintenance Contract for 250 KVA DG Sets in Lahore, Zahrpir and Bhera Rest Areas

Pakistan State Oil Company Limited invites quotations for an annual maintenance contract covering twelve 250 KVA diesel generator sets located at PSO facilities in Lahore city, Zahrpir and Bhera rest areas within the Central Region of Sindh province. The contract requires monthly preventive maintenance site visits by qualified technicians equipped with necessary tools, equipment and consumables to ensure reliable generator operation and prevent downtime. Contractors must conduct comprehensive inspections using standardized preventive maintenance checklists, perform thorough cleaning of all components, check and refill coolant and oil levels, inspect electrical and mechanical connections, test generator output parameters, service batteries, clean radiators, inspect pulleys and drive belts, and manage filter replacement inventory based on 250 running hours or six-month intervals whichever occurs first. The scope also mandates quarterly stack emission monitoring reports documenting SO2, CO2, CO, NOx, noise, PM and smoke levels in compliance with PEQS standards and noise testing protocols.

Contractors must possess valid ISO/IEC 17025 certification with PNAC accreditation scope covering stack emission and noise testing, EPA registration or approval, valid calibration certificates, and specialized equipment including calibrated flue gas analyzers, isokinetic sampling equipment, stack pitot tubes, velocity measurement systems, smoke meters and Class 1 sound level meters. All monitoring reports must include detailed sampling methodology following EPA/USEPA/APHA methods, detection limits, uncertainty statements, QA/QC documentation and authorized signatory verification. Bid security and earnest money requirements are to be specified by bidders. Quotations must be submitted by 04 August 2026.

Bid documents are available from PSO House, Khayaban-e-Iqbal, Clifton, Karachi with telephone contact at (021) 9203866-85 and fax (021) 9203796. Quotations should include unit prices for the annual maintenance contract covering all twelve DG sets. Contractors must designate a focal person at their area office to ensure prompt responses to PSO service requests and provide carbonized maintenance record books containing three carbonized pages per month covering the full twelve-month contract period.

This is a twelve-month recurring maintenance contract for industrial diesel generators at multiple PSO locations requiring specialized technical capability. The contract demands qualified technicians, sophisticated emissions monitoring equipment, ISO/IEC 17025 accreditation and EPA compliance — filtering out small generalist contractors. Monthly site visits plus quarterly emissions testing create regular revenue but significant operational overhead. The mandatory stack emission monitoring requirement with strict documentation standards is unusually demanding for generator maintenance work and will disqualify bidders lacking laboratory accreditation.

Who can bid: Contractors must hold valid ISO/IEC 17025 certification with PNAC accreditation scope for stack emissions and noise testing, EPA registration or approval letter, and valid equipment calibration certificates. Typically for maintenance and technical service contracts, bidders should possess NTN, valid business registration from SECP, and liability insurance. Contractors must demonstrate technician qualifications and possess the specialized emissions monitoring equipment detailed in mandatory requirements.