Supply, delivery, and inspection of 3 Generators and Spare Parts to Water and Sanitation Local Corporations, Al-Mahwait, Yemen

New clarification added: Question 1: I would like to request clarification regarding the specifications for the capacity of the three generators, which are stated as follows:Net rated Prime Power (kVA) at on-site conditions:80 (±2%) kVA100 (±2%) kVA120 (±2%) kVAI would like to confirm whether the values within the parentheses (±2%) are considered as an allowable reserve. For example, if the generator's capacity under site conditions equals exactly 80 kVA, is that acceptable? Does this mean that it does not necessarily need to be 81.6 kVA?Best regards,Answer 2: The (±2%) in the generator's Net rated Prime Power on site conditions (e.g., 80 (±2%) kVA) represents an allowable tolerance margin. This means, the accepted actual measured power on site conditions shall be within the specified range (e.g., 78.4 kVA to 81.6 kVA for an 80 kVA unit). 

New clarification added: Questio Dear Sirs,Question1: Can the offer be made in EUR?Answer 1: As per tender's particulars, No nationalities are excluded from submitting a bid. Bidders have to submit their quotation according to the tender requirementsQuestion 2: Are the requested prime power ratings (80kVA, 100kVA, and 120kVA) based on ISO standard conditions (25°C, sea level), or do you require these power outputs at your site conditions (40°C, 1925 meters above sea level)?Generator Options and Deratings:ModelPrime Power @ ISO (25°C, sea level)Derating at Site Conditions (40°C, 1925m)Approximate Prime Power @ Site Conditions 80 kVA~19% reduction~65 kVA100kVA~19% reduction~80 kVA135 kVA~11% reduction~120 kVAWe consider the Perkins engine suitable for your location. However, note that it jumps from 100kVA to 135kVA prime power at ISO conditions. Recommendations:your requested power ratings already include derating for site conditions, we recommend:For 80 kVA: 1 x nominal 100 kVA For 100 kVA and 120 kVA: 2 units nominal 135 kVAAnswer 2: enerators prime power ratings must represent or exceed the actual output at the specified site conditions (e.g., high temperature and altitude), with bidders accounting for appropriate derating.  Question 3: We would be quoting the generators with Leroy Somer TAL model alternator, please can you advise if this would be accepted in terms of efficiency?In the documents is stated that the efficiency must be 95% or more, however, it is difficult to find an alternator with this efficiency. Please find efficiencies table for the alternator we intend to supply for you to advise if this is acceptable.Please look at TAL044B, TAL044D, TAL044H tables Tables reflect the graph.MODEL: TAL 044 BThe chart shows the efficiency values up to a load of 100 kVA.(kVA)                    P.F. = 0.8         P.F. = 1~15                          89.1%               -~20                          87.6%               -~30                              -                 92.9%~35                          90.7%               -50                               -                  93.6%~55                           90.7%              -~65                             -                  93.5%75                            90.0%            93.3%~85                           89.5%               -MODEL: TAL 044 D The chart shows the efficiency values up to a load of 120 kVA. (kVA)                 P.F. = 0.8         P.F. = 1~25                      90.3%                 -~30                      88.9%                 -~35                      -                          93.6%~50                      91.6%                 -~58                      -                          94.2%60                        91.6%                 -~80                      -                           94.1%~90                      90.8%                 -~95                      -                           94.0%100                      90.4%                 -MODEL: TAL 044 H The chart shows the efficiency values up to a load of 200 kVA. (kVA)                P.F. = 0.8       ~55                      92.1% 60                        91.0%   80                        93.0%100                      92.8% 125                      92.1% 140                      91.7% Answer 3: In regard to the proposed alternators,please adhere to the specified requirements.

New amendment added #1: mendment 1The purpose of the amendment is toExtend the quotation submision deadline 23 July 2025Extend the clarification deadline to 15 July 2025Upload document "Amendment (1) - RFQ- Section II- Schedule of Requirements". All the amended specifications are highlighted in orangeUpload document "Amendment (1) - RFQ- Section III-Returnable Bidding Forms". All the amended specifications are highlighted in orangeThereforeThe esourcing tab document is amended to addAmendment (1) - RFQ- Section II- Schedule of RequirementsAmendment (1) - RFQ- Section III-Returnable Bidding FormsThe esourcing tab general is amended to read:Deadline: 2025-07-23 09:00 UTCDeadline for clarifications:  2025-07-15 09:00 UTCAll other terms and conditions remain the same.

New clarification added: Dear Bid Evaluation Team,Question 1: We have noted that, under the Vendor Submission Document Checklist, copies of a valid business registration to operate in Yemen are required. However, under Bidder Eligibility, it is stated that no nationalities are excluded from submitting a bid.We are an Italian company, and approximately 80% of our production is exported abroad.Could you kindly clarify whether we are allowed to participate directly in this tender, or whether it would be preferable for one of our dealers based in Yemen to submit the bid on our behalf?Answer1: As per tender's particulars, No nationalities are excluded from submitting a bid. Bidders have to submit their quotation according to the tender requirementsQuestion 2: Please kindly clarify the "Inspection" of the Generators. What will be the detailed job content?  Answer 2: Inspection shall include verification of compliance with the technical specifications, as well as visual, mechanical, and functional checks of the generator and its accessories at the point of delivery. Performance testing shall be conducted upon delivery and repeated during the Site Acceptance Test (SAT). All associated costs—including test instruments,load banks, manpower, materials (such as fuel and oil), and logistics—shall be borne by the supplier. All inspections and acceptance testing shall be conducted in the presence of the Purchaser/Owner and in accordance with applicable international standards (e.g., ISO 8528).Question 3: Regarding the 1.2.6 of SOR,  please kindly check if "Sound Proof with sound lever ≥70 dB(A) at 1 meter" is correct?Answer 3: The value stated in the RFQ will be amended. The correct requirement is: “Sound level ≤70 dB(A) at 1 meters”. An official amendment to this clause will be issued shortly.Question 4:  Regarding the  1.2.18 of SOR, please kindly clarify that if it means that the Genset to be in Sound-Proof Canopy and meanwhile inside a Container?Answer 4: Fully enclosed in a containerized soundproof unit  OR in a soundproof canopy. Either is acceptable if it meets the required acoustic performance and weather protection.Question 5:  Should the power of the motors be calculated at the indicated environmental conditions? Or should it be calculated at standard condition with and provide only the derating curves?Answer 5: Power should be calculated at site-specific conditions as specified in the specifications.Question 6: What is meant by inspection? Please provide details.Answer 6: Inspection shall include verification of compliance with the technical specifications, as well as visual, mechanical, and functional checks of the generator and its accessories at the point of delivery. Performance testing shall be conducted upon delivery and repeated during the Site Acceptance Test (SAT). All associated costs—including test instruments,load banks, manpower, materials (such as fuel and oil), and logistics—shall be borne by the supplier. All inspections and acceptance testing shall be conducted in the presence of the Purchaser/Owner and in accordance with applicable international standards (e.g., ISO 8528).Question 7: Please confirm that the required sound level is greater than or equal to 70 dB(A) at 1 m?Answer 7: The value stated in the RFQ will be amended. The correct requirement is: “Sound level ≤70 dB(A) at 1 meters”. An official amendment to this clause will be issued shortly.Question 8: Please confirm that the Generating Sets are in soundproof canopy version and not in soundproof container?Answer 8:  Fully enclosed in a containerized soundproof unit  OR in a soundproof canopy. Either is acceptable if it meets the required acoustic performance and weather protection.Question 9: Canopy type: The specification mentions a soundproof canopy with a sound level ≥70 dB(A) at 1 meter. We do not understand the use of the symbol “>” in this context. Does it mean that higher values or measurements at greater distances, e.g. 70 dB(A) at 7 meters, would also be acceptable? Please clarify.Answer 9: The value stated in the RFQ will be amended. The correct requirement is: “Sound level ≤70 dB(A) at 1 meters”. An official amendment to this clause will be issued shortly.Question 10: Throughout the specifications, you refer to a soundproof canopy, but in section 1.2.18, it mentions a “skid-mounted generator set with outdoor weather protective sound-proof prime power, silence inside container.” Could you please confirm whether a soundproof canopy is acceptable?Answer 10: Fully enclosed in a containerized soundproof unit  OR in a soundproof canopy. Either is acceptable if it meets the required acoustic performance and weather protection.Question 11: Could you please clarify what is meant by a fuel daily tank? Would you accept our standard integrated fuel tank?We look forward to your prompt response.Answer 11: A “fuel daily tank” refers to an integrated fuel tank sized to operate the generator for a full day (typically 8–12 hours) at full load. Question 12: Original specification received:Soundproofing with sound level ≥ 70 dB(A) at 1 meterShould this be:Soundproofing with sound level ≤ 70 dB(A) at 1 meter?Could you please confirm which specification is correct?Answer 12: The value stated in the RFQ will be amended. The correct requirement is: “Sound level ≤70 dB(A) at 1 meters”. An official amendment to this clause will be issued shortlyQuestion 13: We request to extend the deadline for closing date it need more time as per request the companiesAnswer 13: the deadline remains the sameQuestion 14: We noticed that some forms are missing from the RFQ - Section III: Returnable Bidding Forms, such as Forms F, G, H, and J.  Could you please clarify?​Answer 14: Please submit your quote according to the requested forms