IPLOCA Safety Workshop Incident Analysis ”Pipe String Lifting” 01.07.2015 IPLOCA Safety Workshop

IPLOCA Safety Work Shop Purpose This presentation should describe conditions that lead to an accident, how did the incident happen, losses and damages resulting from the accident, and the taken measures to prevent incidents like this. 01.07.2015 IPLOCA Safety Work Shop

Description of the Incident A Pipe Layer was lifting a 36” pipe string (length 500 m) in order to elevate the whole string from ground level to 0,5 m above A lifting sling was used After the pipe is lifted by the pipe layer wood staples were set up under the string by two workers The workers were located at each side of the pipe string 01.07.2015 IPLOCA Safety Work Shop

Description of the Incident Layout of the executed work 01.07.2015 IPLOCA Safety Work Shop

Description of the Incident The lifting sling breaks, the pipe falls down on the wood stack just between the two workers 01.07.2015 IPLOCA Safety Work Shop

IPLOCA Safety Work Shop Cause of the Incident Cause: The sling breaks because the weight of the pipe string was too heavy for the sling (lifting capacity 8t) Root Cause I False assumption of the lifted weight by the responsible foreman: Distance between the support of the wood stack and the lifting of the pipe: less then 18m Weight of one 18m pipe: 6t Weight to be lifted less than 6t 01.07.2015 IPLOCA Safety Work Shop

IPLOCA Safety Work Shop Cause of the Incident Root Cause I: Fact: The lifted distance of the pipe string is much higher than the assumed 18 m : By lifting a pipe string of this dimension the real lifted distance almost the double way and the lifted weight is about 18t 01.07.2015 IPLOCA Safety Work Shop

IPLOCA Safety Work Shop Cause of the Incident Root Cause II: The foreman did not got any instructions for these works: No situational hazard analysis No formal standard procedure No briefing 01.07.2015 IPLOCA Safety Work Shop

IPLOCA Safety Work Shop Cause of the Incident Measures taken from this incident: Design calculation of all possible lifted pipe strings from pipe diameter 4“ to 56” Preparation of a method statement for lifting pipe strings with exact information of the capacity of the slings to be used. Training of the responsible foremen and workers 01.07.2015 IPLOCA Safety Work Shop

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