SHELL PIPELINE CO., L.P.

Incident Narrative

PERSONNEL WALKED OUT OF MLQ'S AND NOTICED A ROSEBUD SHEEN WHILE LOOKING OVER THE HANDRAIL. AVERAGE RATE WAS 1 1/2 FEET WIDE X 1 1/2 FEET LONG X 30 ROSEBUDS PER HOUR. IMMEDIATE CORRECTIVE ACTIONS: PERSON WHO SAW THE ROSEBUD NOTIFIED THE PIC IN WHICH PROPER NOTIFICATIONS WERE MADE. AFTER LOOKING AT A PIPELINE LAYOUT DIAGRAM AND DISCUSSING WITH SUPERVISION, HOUSTON CONTROL CENTER SHUT-IN THE AMBER-JACK 20' PIPELINE AT 6:20PM. ESTIMATED RELEASE IS LESS THAN PHMSA REPORTABLE AMOUNT BUT COST EXCEEDS 50,000K THUS THIS PHMSA NOTIFICATION. AMOUNT REPORTABLE IN PART A, ITEM 9 HAS TO BE MORE THAN 0.1BBL BUT ACTUAL RELEASE IS 0.128OZ. _________________________________________________________________________________________________________________________________________________ UPDATE: THE SOURCE OF THE LEAK WAS FOUND AND ELIMINATED BY TIGHTENING THE FLANGE HARDWARE BACK TO INSTALLATION SPECIFICATION AS FLANGE WAS LOOSE . WHILE HOLDING PRESSURE, PER THE APPROVED REPAIR PROCEDURE, THE SOURCE OF THE LEAK WAS VISUALLY MONITORED VIA ROV TO ENSURE THERE WAS NO FURTHER LEAKAGE. GC-19 TOPSIDES PERSONNEL ALSO STOOD WATCH FOR ANY INDICATION OF ROSEBUDS ON THE WATER SURFACE AT THE EAST SIDE OF THE PLATFORM. IN ADDITION TO VISUAL MONITORING FOR LEAK STOPPAGE, THE PRESSURE WAS MONITORED IN THE ONSHORE CONTROL CENTER VIA SCADA PRESSURE TRANSMITTER AT GC-19 (ALTHOUGH IT IS A SECONDARY ASSURANCE POINT AS THE LEAK RATE WAS VERY SMALL AND WOULD BE DIFFICULT TO DETECT VIA PRESSURE TRENDS). THERE WAS NO USE OF A PRESSURE CHART RECORDER. LASTLY, A HELICOPTER OVERFLIGHT WAS CONDUCTED IN THE ST301 AREA WHERE THE ORIGINAL AJ 20INCH IS TIED TO THE JACKALOPE 20' WITH NO MATERIAL OBSERVATIONS NOTED. NO SUBSEA LEAK WAS WITNESSED, AND NO TOPSIDE ROSEBUD INDICATIONS WERE OBSERVED.