ASSESSMENT / REASSESSMENT OF FIRMS MANUFACTURING CAST MANGANESE STEEL CROSSINGS (CMS Crossing)
In addition to the “General Guidelines for Vendor Approval” the following shall also be applicable for assessment / re-assessment of firms for manufacturing CMS Crossings.
i) The list shall be common for 1:8:5 and 1:12 crossings for 52kg and 60kg rail section. The firm should be in possession of all the requisites of Class ‘A’ foundry as per Bureau of Indian Standards at the time of initial approval.
ii) The firm shall be required to manufacture two sets of each design of CMS Crossings for Internal Development. During Internal Development, all types of tests as mentioned in the relevant specifications shall be carried out by the firm. Seven stage inspections shall be required to be carried out during internal development.
iii) After successful completion and approval of Internal Development, the firm shall be asked to produce eleven sets of proto-types of at least one design under consideration (including one set of each design for solidity test). The initial approval shall be given to the firm by the competent authority after the approval of all the above offered proto-type and fulfilling other requirements as per General Guidelines for Vendor Approval.
iv) For the purpose of re-assessment the firm shall be required to produce two samples of CMS Crossings for inspection by RDSO officials (including one sample for solidity test) and both should pass the tests.
v) The gauges shall be approved / revalidated at the time of inspection of infrastructural facilities during assessment / reassessment of the firm.
vi) The inspection gauges, internal development and proto-type shall be approved by RDSO for each design of CMS Crossings on order before start of regular production.