Processing of Polymetallic Materials Requires Flexible and …
745
Table 1 Measures to minimize the lead concentration in lead according to the TRGS 505
Criteria/Measures
Technical
Organizational
Plant layout
• Black and white separation
for control room, social
rooms
• Air overpressure in white
areas
• Several double door locks
• Washing facilities next to
the production site
Behavior based safety
• Agreement with workers
and union for discussion of
values classified in “traffic
light” ranges and on
individual basis (in a closed
group)
• Instructions, rules, training
people, understanding lead
• Incentive program on
individual values
PPE (Personal protective
equipment)
• Different masks and
especially air-stream or
air-flow helmets (3 M) with
daily cleaning in a special
workshop
• Daily change of working
clothes after shift,
including T-Shirt
Tracking
• Traffic light system for lead
in blood values:
green/yellow/red for each
plant manager
men with 300 µg/l and for women with 100 µg/l. Therefore, an investigation in the
medical department is scheduled minimum twice a year. The limit of 300 µg/l was
undercut for the first time in 2016.
Equipment Design Improvements
During the engineering phase, the equipment design of the kettle heating system
was challenged in order to improve the efficiency of used natural gas. This could be
achieved by applying a new process control system and a failsafe control which shut
down the burner in case of a possible overheating of the kettles. All in all, the heating
is significantly improved because of the installed thermocouples which have direct
contact to the melt and will allow to reach the set temperature without overheating.
The new lining of the kettle stations (Fig. 7) allows a faster cooling of the melt which
745
Table 1 Measures to minimize the lead concentration in lead according to the TRGS 505
Criteria/Measures
Technical
Organizational
Plant layout
• Black and white separation
for control room, social
rooms
• Air overpressure in white
areas
• Several double door locks
• Washing facilities next to
the production site
Behavior based safety
• Agreement with workers
and union for discussion of
values classified in “traffic
light” ranges and on
individual basis (in a closed
group)
• Instructions, rules, training
people, understanding lead
• Incentive program on
individual values
PPE (Personal protective
equipment)
• Different masks and
especially air-stream or
air-flow helmets (3 M) with
daily cleaning in a special
workshop
• Daily change of working
clothes after shift,
including T-Shirt
Tracking
• Traffic light system for lead
in blood values:
green/yellow/red for each
plant manager
men with 300 µg/l and for women with 100 µg/l. Therefore, an investigation in the
medical department is scheduled minimum twice a year. The limit of 300 µg/l was
undercut for the first time in 2016.
Equipment Design Improvements
During the engineering phase, the equipment design of the kettle heating system
was challenged in order to improve the efficiency of used natural gas. This could be
achieved by applying a new process control system and a failsafe control which shut
down the burner in case of a possible overheating of the kettles. All in all, the heating
is significantly improved because of the installed thermocouples which have direct
contact to the melt and will allow to reach the set temperature without overheating.
The new lining of the kettle stations (Fig. 7) allows a faster cooling of the melt which