Page 97 - 《橡塑技术与装备》英文版2026年2期

EQUIPMENT MANAGEMENT AND MAINTENANCE

other process production equipment. Twelfth, there are other First, there are safety disposal requirements for the
safety precautions that need to be mentioned for startup. materials remaining in the equipment and on the conveyor
4.4.2 Precautions for operational safety line before shutdown. Second, there are safety requirements
During equipment operation, phenomena such as for the cooling speed, time, and lubrication status of rotating
vibration, heating, and wear often cause some devices, parts of the equipment. Third, there are safety requirements
mechanisms, or components to loosen, fall off, leak, or exhibit for the position of the electromechanical control device
abnormal movements, which can further develop into hidden after shutdown. Fourth, there are safety requirements for the
dangers, malfunctions, or accidents. Therefore, attention should shutdown sequence of the automatic control system. Fifth,
be paid to the following aspects during equipment operation, there are safety requirements for the sequence of closing the
including but not limited to. medium and cutting off the power supply. Sixth, there are
First, there are safety requirements for equipment safety requirements for cleaning the machine and maintaining
startup speed, no-load running time, capacity load, power, hygiene. Seventh, there are safety precautions for the shutdown
and current. Second, there are operational safety requirements of supporting special equipment and other process production
for the pressure, flow rate, and temperature of the power equipment, which should be implemented according to their
supply system, lubrication system, hydraulic system, and operating procedures. Eighth, there are other safety precautions
temperature control system. Third, there are operational safety for shutdown that need to be mentioned.
requirements for the integrity of power supply and distribution 4.4.4 Emergency shutdown in case of emergency
facilities, the effectiveness of mechanical limit and buffer During the startup, operation, and shutdown of
devices, the sensitivity of electrical safety protection devices, equipment, occasional abnormalities may occur. To prevent
the effectiveness of detection devices, and braking effects. personal safety and equipment accidents, emergency shutdown
Fourth, there are safety requirements for the use of lifting measures must be taken. Emergency shutdown measures can
tools and equipment. Fifth, there are safety requirements for be taken in the following situations.
the placement of production tools and equipment. Sixth, there First, when foreign objects enter between the relatively
are operational safety requirements for parts such as relative rotating parts of the equipment or inside the equipment.
rotation, transmission, sliding, swinging, and cutting devices. Second, when the equipment exhibits abnormal vibrations,
Seventh, there are safety requirements for the location of temperature rises, fractures, friction, impacts, or other
production employees. Eighth, there are safety protection phenomena or sounds. Third, when the mechanical safety
requirements for electrical equipment and facilities. Ninth, protection devices fail, or the electrical safety protection
there are operational safety requirements for handling material devices and emergency braking devices malfunction. Fourth,
blockages and accumulations. Tenth, there are safety handling when the power supply and distribution system emits a burnt
requirements for equipment fault alarms. Eleventh, there are smell or experiences electric leakage. Fifth, when the power
operational safety precautions for supporting special equipment medium supply system, lubrication system, hydraulic system,
and other process production equipment, which should be temperature control system, and pipelines suddenly burst or
implemented according to their operating procedures. Twelfth, leak. Sixth, when personal safety is endangered or equipment
there are other operational safety precautions that need to be accidents occur. Seventh, when emergency shutdown of
mentioned. supporting special equipment and other process production
4.4.3 Safety precautions for shutdown equipment is required, it should be executed according to
After production is completed, some equipment requires their operating procedures. Eighth, other emergency shutdown
material cleaning, some need to cool down at low speed, and matters that need to be raised.
some need to be shut down in sequence. Therefore, when 4.5 Safety protection device
shutting down equipment, attention should be paid to the Equipment safety protection devices are crucial
following aspects, including but not limited to. measures for ensuring the safe operation of equipment and

Vol.52，2026 ·53·