| System Improvement | Letter No. | Department |
| 2020 |
| System Improvement regarding disposal of scrap | E-123/Sig/G/Pt1 dated 14/2/2020 | S&T |
| 2019 |
| System improvement in Work Contract matters | CAO/C/Co-ord./Cont. dated 02/05/2019 | Construction |
| System Improvement regarding refund of EMD to the tenderer who failed to take tender. | Sig/348/3/Part –V dated 13/02/2019 | S&T |
| 2018 |
| System improvement guidelines/instructions for the CUG facility | E-123/Sig/C dated 06/08/2018 | S&T |
| 2017 |
| System improvement regarding to ensure that drawing for incorporating in the tender document for construction of foundation of location box single are being authenticated by a Competent Authority by comparing with the original to avoid deviation from the approved original drawing. | E-123/Sig/G dated 11/01/2017 | S&T |
| System improvement regarding S&T | E-123/Sig/G dated 17/05/2017 | S&T |
| 2015 |
| System improvement regarding material for use at site is issued through departmental staff the incharge of the store should ensure the receipt from the intended recipient. | E-123/Sig/G dated 24.08.2015 | S&T |
| System improvement to ensure that while awarding any work the complete description/technical specification along with the terms and conditions regarding inspection, payments, warranty, maintenance period etc. are mentioned in it. | E-123/Sig/G dated 06/08/2015 | S&T |
| 2014 |
| System improvement in Rejection on Non-Stock items. | E-123/Sig/G dated 17/11/2014 | S&T |
| System improvement (Availability of Contract Agreement) | E-123/Sig/G dated 16/10/2014 | S&T |
| 2013 |
| System Improvement regarding Work Contract | E-123/Sig/G dated 16/01/2013 | S&T |
| System improvement regarding Tender | E-123/Sig/G dated 01/01/2013 | S&T |
