The sign "No closing, someone working" should be a red letter on a white background.
A bulletin board used to warn people not to get close to equipment and live parts, indicate the working place for staff, remind them to take safety measures, and prohibit a certain equipment or a certain section of line from closing and being live. It can be divided into warning class, permission class, prompt class and prohibition class.
When the operated switch is turned on, the sign "No closing, someone is working" is hung.
The operating handle and valve are hung with the sign "No operation, someone is working".
Hang the sign "Work here" at the maintenance workplace.
"No climbing, high pressure danger!" Denot
"No climbing, high pressure danger!" The logo should be black with white background and red edge.
In the power system, we attach great importance to the influence of color on safety production, because color signs are more obvious than text signs and are not easy to make mistakes. Safety color is widely used in substation work site. For example, various control panels, especially the main control panel, use color signal lights to distinguish various operating states of equipment, and the personnel on duty can accurately judge various operating states according to different color signal lights.
In practice, other colors (that is, contrast colors) are often used as the background colors of safety colors to make them more eye-catching and improve the discrimination of safety colors. For example, red, blue and green take white as the contrast color, and yellow takes black as the contrast color. Yellow and black stripes have good visibility and are generally used to warn of danger, while red and white intervals are often used to mean "no crossing".
According to the relevant regulations of power industry, the color of substation bus L 1 is yellow, L2 is green and L3 is red. When the equipment is running, the flashing green signal indicates that the equipment is ready for operation, and the red signal lamp indicates that the equipment is running, reminding the staff to concentrate and pay attention to safe operation. The Code for Safe Work in Electric Power Industry (electrical parts of power plants and substations) clearly stipulates the use methods of hanging signs and installing fences in different occasions: (1) The sign "No closing, someone working" should be hung on the operating handles of switches and knife switches that can send electricity to the workplace once closed. If someone is working on the line, the sign "No closing, the line is occupied" should be hung on the operating handles of the line switches and circuit breakers. (2) On the obstacles of live equipment on the construction site; On the fence of outdoor workplace; In the forbidden aisle; High-voltage test site and outdoor structure; "Stop, high voltage is dangerous!" It is hung on the beam near the live equipment in the workplace, with white background and red edge, and black characters with red arrows. Signboard. (3) In outdoor and indoor workplaces or construction equipment, hang a circle with a diameter of 2 10mm on a green background, and write the sign "Work here" in black in the white circle. (4) Hanging a white circle and black "Henceforth" sign with a diameter of 2 10mm on the iron frame and ladder where the staff get up and down. (5) On the iron frame where workers get up and down, it is adjacent to another iron frame that may get up and down. The running transformer ladder says "No climbing, high voltage danger!" Signboard.
The sign "Stop, High Pressure Danger" has a white background, a red edge and a red arrow.
Practice has proved that safety color is very important in substation production. For the safety of you and others, please keep in mind the meaning of these safety colors and apply them correctly in practical work.
In the safety color code, red indicates prohibition, stop or fire fighting.
The safety color of electric power work is the color that expresses the meaning of safety information. The use of safety color can make people's sensory adaptability form and be fixed in long-term life, which is good for life and work. The purpose is to make people quickly find and distinguish safety signs through bright colors, remind people to pay attention and prevent accidents.
Refer to the standard answer of low-voltage electrician examination.
National standard GB2894- 1999 "Safety Signs"
Gb14161-99 coal mine safety signs.
GB 13495 fire safety signs