A Review of the Event Analysis of Systemic Teamwork Methodology

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HFIDTC/WP1.1.3/10 Version 2/ 31 October 2005 Table 11 - CDM Phase 2: Deal with switching requests Goal Specification Cue identification Expectancy Conceptual Model Uncertainty Information Situation Awareness Situation Assessment Options Stress Choice Analogy Obtain confirmation from NOC that planned isolation is still required. Approaching time for planned isolation. Switching phone rings throughout building. Airblast circuit breakers (accompanied by sirens) can be heard to operate remotely (more so in Barking 275 than Barking C 132). Yes – routine planned work according to fixed procedures. Wokingham have performed remote isolations already. Circuit configured ready for local isolation. Physical verification of apparatus always required (DBI – don’t believe it). Proceduralised information from NOC – circuit, location, time, actions required etc. Switching log. Switching log. Physical status of apparatus. Planning documentation. Visual or verbal information from substation personnel. Planning documentation used only occasionally Refusal of switching request. Additional conditions to switching request. Some time pressure. Yes – highly proceduralised anyway Yes – routine activity 17
HFIDTC/WP1.1.3/10 Version 2/ 31 October 2005 Table 12 – CDM Phase 3: Perform isolation Goal Specification Cue identification Expectancy Conceptual Model Uncertainty Information Situation Awareness Situation Assessment Options Stress Choice Analogy Ensure it is safe to perform local isolation. Confirm circuits/equipment to be operated. Telecontrol displays/circuit loadings. Equipment labels. Equipment displays. Other temporary notices. Equipment configured according to planned circuit switching. Equipment will function correctly. Layout/type/characteristics of circuit. Circuit loadings/balance. Function of equipment. Will equipment physically work as expected (will something jam etc.). Other work being carried out by other parties (e.g. EDF). Switching log. Visual and verbal information from those undertaking the work. Physical information from apparatus and telecontrol displays. All information used Inform NOC that isolation cannot be performed/other aspects of switching instructions cannot be carried out. Some time pressure. Possibly some difficulties in operating or physically handling the equipment. Yes – proceduralised within equipment types. Occasional non-routine activities required to cope with unusual/unfamiliar equipment, or equipment not owned by NGT. Yes – often. Except in cases with unfamiliar equipment. 18
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A Review of the Event Analysis of Systemic Teamwork Methodology

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