OCIMF APTF 15 Pattaya, Thailand. 10 th & 11 th September 2009 New Zealand Refining Company Fatigue Study

Shift Staff Fatigue Survey Findings & Recommendations

Survey Purpose Address Buncefield Task Group recommendation: “that shift work is adequately managed to control risks arising from fatigue”

About the Survey Shift-workers included: –Operators –Emergency Services –Marine –Security (survey only) 139 individuals Data used from Cardax to measure attendance: –April 2008 to Mar 2009 (incl 2 shutdowns) –240K hours –Anonymous participation Data from questionnaire survey used to assess surrounding issues

About the Survey Actual hours of Work Indicative Fatigue Analysis Assessment of actual hours of work uses FAID software to generate an "indicative fatigue score" FAID programme takes consideration of the: –length of each work or break period; –time of day at which the work or break occurrs; –prior (seven-day) work history of the individual workers; –biological limitations of sleep and recovery. Scores below 80 are broadly consistent with safe levels of fatigue. Scores above 100 are broadly consistent with concerning levels of fatigue.

Fatigue Analysis FAID score of 80 is equivalent to alcohol level of 0.05 (NZ driving limit is 0.08) 92.5% of total hours were worked at less than a FAID score of 80 –With a 98% compliance rate at a score less than 100 Operations:92.2% Emergency Services:92.9% Marine:97.3%

Hours of Risk Hours worked – profile Principal hours of risk are between 05:00 and 08:00 hours (second night shift).

Monthly Profile Shutdowns

Individual Profile Peak FIAD score = 153 (the extreme case in the whole sample) Highest score – indicative profile

Individual Profile Peak FIAD score = 116 High score – indicative profile

About the Survey Alertness at work On night shift approximately 1 in 5 report they feel they are “just coping” or “exhausted”. Approximately 80% reporting they drop off to sleep at work 1-2 times per month. The commute home following a night shift is considered a high risk time. Just over half (53%) use company transport. Most said they stay alert by keeping busy/active, walking and exercise. Some said they drink water/caffeine or power nap.

About the Survey Health and Shiftwork A number said they thought shiftwork contributed to their health problems although the majority (60%) did not. The most common health issues were around stomach and bowel complaints, diet and weight. Other health concerns included mood, depression and stress. Few said they took drugs/medication to help them sleep.

About the Survey Sleep Diary Information Sleep Research Centre recommends a minimum of 5 hours sleep per 24 hours and 50 hours over 7 days. During day shift most (over 95%) reported they achieved over 5 hours sleep. On the swing from day to night shifts only 15% reported less than 5 hours sleep. For the night shifts 10% appear not to be obtaining the minimum number of hours sleep. Over a 7 day period a quarter reported achieving less than the benchmark of 50 hours sleep. The survey suggests most of us are good sleepers!!

About the Survey General - Safety / Suggestions Most rated their general work environment high on the safety scale, although lighting was raised as an area for improvement (outside plant lighting?) Most are happy with the current shift roster. In terms of facilities at work, food was reported as an area for improvement followed by gym and rest facilities. A number wanted better management of overtime (34%), although a similar number said it was okay (29%).

Recommendations Develop a shift-work fatigue risk management policy (focus on overtime and shutdowns). Current roster confirmed as most preferred (questionnaire) and modeled (FAID). Changes in start/finish times had little effect on fatigue. Schedule planned high risk activities early during the night shift. Role out an education programme regarding shift & lifestyle management –Eating, sleeping, fitness, fatigue symptoms & self management (Dr Jim) –Awareness of fatigue when driving

The End Thank You