TDC2/TCC2 Electrical remedial work 12/12/14 Phase 1 – Electronic starter replacement 82 electronic starters remain in TDC2 to be replaced with non-electronic versions Replacement time approx 30s per starter 1 hour intervention, 2 operatives (+2 ladders) Throughout TDC2 zone. Phase 2 – Electronic Ballast replacement 32 electronic ballasts to be replaced with transformer/diode DC converters Work estimated to take 1-2 person days, located on TDC2 Mezzanine 64 electrical connections to be modified (2 per ballast). 1 day intervention, 2 operatives. Phase 3 – BA80 surface cabling Modification of interlock cable to access control rack behind BA80 turnstyle (EMTE) Correction of control cabling to EBD270/A80 (EL/OP) in PA801 UPS Supervision cabling. No access to TDC2/TCC2 required.