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Safety and environmental standards for fuel storage sites
Final report
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flow rate too high;
■
■
tank earthing system;
■
■
tank dipping equipment and procedures.
■
■
Potential leading indicators:
number of times inspection of system maintenance overdue/shows failures;
■
■
number of times inspection of tank earthing overdue/shows failures;
■
■
number of times job observations (tell me/show me) on tank dipping are completed on time.
■
■
11 Physical damage
System outcomes:
no material physical damage to equipment.
■
■
Potential lagging indicators:
number of incident reports where physical damage has occurred.
■
■
Critical elements of the risk control system:
driver induction and training;
■
■
competence of permanent contractors;
■
■
control of non permanent contractors – induction;
■
■
correct use of work control system;
■
■
protection of ‘at risk’ equipment;
■
■
traffic control system – layout, speed detection.
■
■
Potential leading indicators:
number of near-miss reports where equipment damage is a potential;
■
■
number of drivers not trained as required;
■
■
number of significant work control system deficiencies found.
■
■
Table 16
Suite of process safety performance indicators
Challenge to integrity
Lagging indicator
Leading indicator
1 Over-pressure ship-to-shore
transfer*
Number of times pressure in
the line exceeds 10 bar when
offloading
Number of times ship is unloaded
where the ship–shore checks are
not completed correctly.
Number of times when any item
is not met by ship calling at a
terminal.
2 Ship-to-shore transfer
accidental leakage*
Number of times a ship is offloaded
where there is a leak to water
Number of times the planned
inspection and maintenance of
marine arms not done to time.
Number of times the ship-to-shore
checks not completed correctly.
3 Bulk tank overfilling*
Number of times the tank is filled
above the safe operating limits
Number of times ullage checks
not done correctly before product
transfer begins.
Number of times inspection and
maintenance of tank gauging system
not carried out to required frequency.