Hourly activities:
00:00 - 02:15: Lined up to test RTTS from below. Verified correct line-up from CMT unit to IBOP and performed line test. No go. Closed manual IBOP on TDS and performed line test. OK. Performed low pressure test to 30 bar 10 min. OK. Dropped 1 bar 10 min. Pressured up in steps and tested RTTS to 230 bar 10 min from below. OK. Dropped 1. 8 bar 10 min. 1. 3 m3 pumped and 1. 35 m3 bled back.
02:15 - 03:00: PU up to neutral and released from RTTS with 22 turns CCWW. PU to 340 m.
03:00 - 04:15: Pulled up and greased top of connection. Ran back down to and spaced out below BTM pipe ram.
04:15 - 05:30: Lined up CMT unit to IBOP on TDS to test RTTS from above and performed line test to 345 bar. OK. Performed low pressure test to 30 bar 10 min. OK. Dropped 0 bar 10 min. Pressured up in steps to test RTTS. Pumped 1. 1 m3 to 110 bar and observed leak. 500 ltrs bleed back.
05:30 - 06:00: Discussed situation and evaluated further action.
06:00 - 06:30: Discussed situation and evaluated further action.
06:30 - 09:15: Stung back into RTTS. Observed 2. 2 bar pressure increase when communication to volume below plug was established. Lined up to test RTTS from below. Closed manual IBOP on TDS. Performed low pressure test to 30 bar 10 min. OK. Dropped 0 bar 10 min. Pressured up in steps and tested RTTS to 230 bar 10 min from below. OK. Dropped 1. 7 bar 10 min. 1. 33 m3 pumped and 1. 32 m3 bled back. Rotated 12 turns to the left and POOH of RTTS. Tested storm valve to 50 bar 10 min. OK. Dropped 0. 9 bar 10 min. 121 ltrs pumped and 121 ltrs bled back. Stung out of RTTS.
09:15 - 11:15: Flow checked well prior to displacing well above RTTS to SW. OK. Meanwhile held tool box talk with involved personnel. Drained trip tank and poor boy degasser. Re-filled trip tank with SW. Displaced well to SW at 3100 LPM 20 bar. Flushed c k and surface lines.
11:15 - 11:45: Pumped 10 m3 hi-vis pill at 1500 LPM 15 bar and spotted above RTTS.
11:45 - 12:00: POOH with running tool on 5 1/2" DP from 348 m to 310 m. Could not rack back 5 1/2" DP due spinner on iron roughneck not working.
12:00 - 13:00: Investigated problem with pipe spinner on aft roughneck.
13:00 - 13:15: Held tool box meeting prior to using chain tong to spin out stds of DP.
13:15 - 14:30: Observed gain in trip tank and flow up RTTS running string. Installed kick valve on string. Shut in well and monitored pressures. No increase in pressure observed. Total gain in trip tank was 420 ltrs.
14:30 - 15:00: Opened auto choke and observed no gain in TT through mud gas separator. Opened kick valve and observed no flow. POOH with running tool on 5 1/2" DP from 310 m to 292 m. Could not rack back 5 1/2" DP due to lower arm on FWD PRS not working.
15:00 - 19:00: Changed out solenoid valve on lower arm on FWD PRS. Meanwhile removed every second bolt on slick joint and moved BOP carrier beneath BOP.
19:00 - 20:15: Held tool box talk for manual handling. Performed equipment check and found loose dies on FWD PRS carrier. Changed dies.
20:15 - 22:00: POOH with running tool on 5 1/2" DP from 292 m to OOH.
22:00 - 23:00: Cleared rig floor. RIH with 1 single 5 1/2" DP and closed ram. Drained BOP.
23:00 - 00:00: Installed diverter pulling tool.

24-hour summary: Leak tested RTTS to 230 bar from below. Displaced well to sea water above plug. POOH with RTTS running tool and LD same. ND and lo diverter.