1 Scope

This regulation specifies the content and requirements for safe operation beneficiation plant electrical fitter positions.

This procedure applies to the position of electric fitters in the concentrator.

2 content

2.1 The power plant of the concentrator shall comply with GB50070 and other relevant regulations. The staff must be dressed tightly. The female worker must wear a safety helmet and wear a badge. She should not wear shorts, skirts, high heels or slippers.

2.2 Electrical operators must undergo professional training, pass the examination, and obtain the operation permit before they can work independently. Apprentices and interns are not allowed to work alone.

2.3 Familiar with the mechanical and electrical performance of the jurisdictional equipment, the power supply system, the lubrication part of the equipment, the equipment layout state, the use and the technical maintenance rules for the equipment.

2.4 Strictly implement the system of power transmission and stop, do not allow live working or relocate mobile equipment, cut off the power supply during maintenance, lock the mechanical lock after the electric discharge, and hang the warning sign "some people work, no power is allowed", if many people When a switch is stopped, each person will hang up the power card. Only the last delisted person can directly contact the person in charge of the site before taking the card. It is strictly forbidden to stop, send electricity and borrow power to repair equipment.

2.5 After the power failure, the power must be checked. After the power is off, the ground can be completely discharged. Stop power transmission in accordance with the provisions of the substation operating procedures

2.6 The installation location of electrical equipment should be dry and safe to avoid watering and dripping. The low-voltage switch should be placed on the shelf and perpendicular to the ground. The angle of inclination should not exceed 15 degrees.

2.7 Check and handle the fault, the electrical equipment must be grounded and short-circuited in three phases. The parts must be complete during assembly to ensure the performance and integrity of the equipment.

2.8 When removing the deactivated electrical equipment, the unqualified connector of the cable left at the removal point is not allowed, and should be dealt with in time. If it cannot be repaired, it should be replaced immediately.

2.9 cable laying suspension should be performed in accordance with the provisions of "non-coal mine safety regulations" of. The extra long part in use should be placed in the "S" shape.

2.10 High-voltage cable junction box, single high-voltage equipment and more than 3 electrical switches in the 10M range, must be installed local grounding pole.

2.11 During operation, the leak detection relay must be locked to ensure that the action is sensitive and reliable, and the compensation is adjusted in time according to the network change. The leak detection relay inspection test shall be carried out in accordance with the “Installation, Maintenance and Inspection Rules for Leak Detection Relays”. No one may use any excuse to disable the Leak Detection Relay.

2.12 The setting value of the overcurrent device must be accurate and the action is sensitive and reliable.

2.13 mechanical dismantling parts, to use brackets, stable and solid, those who have a swing mechanism to be stuck.

2.14 Repair machinery should be parked in a flat and solid place. The support is firm and wedged. When using the jack, it must be stabilized by the bracket.

2.15 The machinery in the overhaul shall have the warning signs of “being repaired and prohibited to start”. Non-maintenance personnel shall not be allowed to start or rotate the machinery. During the overhaul, it is not allowed to put your hand into the gear box or use your fingers to find the right position.

2.16 patrol to check the operation of all equipment, and do four operations in the inspection:

1) Diligent listening sound: The sound is smooth and even, no noise and abnormal noise.

2) Diligently touch the bearing temperature: slightly hot is normal, high heat needs to check whether there is lack of oil or excessive oil or bearing damage, and the butter should be treated in time when it is smoked.

3) Diligent observation: the connecting bolts are fully tightened, and the lubricating oil is clean and free of fouling.

4) Check if the grounding system is in good contact.

3 safety warning

3.1 When repairing electrical equipment, strictly implement the “stop and power transmission system”, otherwise it will cause personal electric shock.

3.2 It is forbidden to operate the isolating switch with load, otherwise the isolation switch will be damaged, which will affect the normal stop and power transmission.

3.3 Maintenance equipment must be guaranteed to be intact and reliable.

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