Regular bulk order(s), constituting a minimum of 80% of the Net Procurement Quantity (NPQ), shall be placed on the tenderer(s) having relevant past performance. For this purpose, relevant past performance means that the manufacturer must have satisfactorily executed at least one single purchase order placed by any Zonal Railway, Production Unit (PU), or CORE for the tendered item or similar item (as defined in the tender document) for a minimum quantity equal to 20% of the total tendered quantity during the preceding three years, reckoned from the date of tender closing. The bidder shall submit documentary evidence in support of such past performance, such as Receipt Notes/Proof of acceptance of material by the consignee and/or an Inspection Certificate accompanied by a self- declaration confirming that the supplied material has been accepted by the consignee. Submission of any false declaration shall render the contract liable for termination and shall also invite appropriate punitive action as per the applicable law. In the event that the bidder fails to submit the prescribed supporting documents, the bidder shall be deemed not to possess the requisite past performance and/or capacity, and the tender shall be evaluated on the basis of the bidder's past supply performance records available with the Purchaser, if any, without any further reference to the bidder. Where a tender is submitted by an authorized agent, the requisite past performance shall be that of the principal authorizing the agent, and any past performance of the agent in respect of supplies made on behalf of a different principal shall not be considered for the purpose of placement of bulk orders in the event of a change of principal.The balance quantity, up to 20% of the Net Procurement Quantity (NPQ), may be placed on new sources as developmental order(s), based on their demonstrated capacity and capability to manufacture the tendered item. For this purpose, the bidder shall submit, along with the offer, documentary evidence of past performance for the same or similar items of equivalent rating or performance parameters, details of plant and machinery, testing facilities, Quality Assurance Plan (QAP), where available, technical manpower, registration for the same or similar item(s) with Government agencies or Public Sector Undertakings (PSUs), and any other documents required under the applicable technical specifications and drawings. Failure to submit the prescribed documentary evidence shall be construed as non- establishment of the requisite capacity and capability, and the offer shall be considered further in accordance with the extant rules, without any further reference to the bidder.