1. What are the safety protection devices for taxiing?
Answer: the transmission part should have hand protection safety device and protective cover.
2. What machine tools are not allowed to extend the power cord or replace the plug at will.
Answer: Hand-held power tools.
3. What kind of hand-held power tools must use insulation according to regulations?
Answer: Class I hand-held power tools.
4. What are the safety requirements of the cold-drawn steel bar working area?
A: Protective baffles must be set up, warning signs should be set up during cold drawing, and non-working personnel are strictly prohibited from staying.
5. What safety devices should oxygen cylinders have?
Answer: You should have a shockproof apron and a safety helmet.
6. What are the safety requirements for using submersible pumps?
Answer: When using submersible pump, a leakage protector with leakage action current less than 15 mA and leakage action time less than 0. 1 s should be installed to protect against zero or grounding.
7. What electrical safety devices should be installed for electric welding machine?
Answer: Leakage protector and secondary no-load step-down protector should be installed.
8. The length of primary line of electric welding machine should not exceed several meters.
A: It can't be more than five meters.
9. What is the "crossover" operation of mechanical operators?
Answer: Cleaning, lubrication, adjustment, fastening and anti-corrosion.
10, why does the grinding wheel have to be equipped with a protective cover?
Answer: In order to effectively prevent broken grinding wheel debris and abrasive debris from flying out and hurting people.
1 1. What are the hidden dangers of welding operation?
Answer: (1) Prevent the harm of arc radiation to human body: (2) Prevent metal splash, burn and fire caused by covering the electrode tip; (3) to prevent harmful gas and dust poisoning, pay attention to dust removal and ventilation; (4) Prevent explosion caused by welding pressure vessels; (5) To prevent falling, there should be safety measures; (6) To prevent electric shock accidents, do a good job in insulation protection.
12. What are the standard colors of oxygen cylinders, acetylene cylinders, hydrogen cylinders and liquefied petroleum gas cylinders?
Answer: oxygen cylinder: sky blue bottle with black characters; Acetylene bottle: white bottle, scarlet letter; Hydrogen bottle: green bottle, scarlet letter; Liquefied petroleum gas cylinder: silver-gray cylinder, scarlet letter.
13, what should I pay attention to when operating the concrete vibrator?
Answer: (1) The power cord must be a copper-core flexible cable with weather-resistant rubber sheath; (2) Good insulation, reliable zero connection or grounding protection; (3) The power leakage protector must be sensitive and reliable. (4) The vibrator cable shall not be dragged randomly on the steel mesh to prevent damage and leakage, and the cable length shall not exceed 30m；; (5) Operators should wear rubber-soled shoes (boots) and insulating gloves; (6) When the vibrator needs maintenance, the power supply must be cut off.
14, what should I pay attention to when operating the frog rammer?
Answer: (1) Directional switch must be used for the operating switch of the rammer, and reverse switch is strictly prohibited, and the wire inlet should be provided with a protective baffle; (2) The handle must be equipped with insulating material; (3) Each tamping machine must have two operators, one to operate the tamping machine and one to randomly arrange cables; (4) When operating the rammer, rubber shoes and insulating gloves must be worn. When handling the rammer, the power supply must be cut off. (5) When parking, you must cut off the power supply and lock the brake box. Do a good job of moistureproof and waterproof for the motor.
15, what should I pay attention to when operating woodworking machinery?
Answer: 1, woodworking machinery must be managed by special personnel; 2. The safety protection device must be complete and reliable, and it is not allowed to be disassembled during operation; 3, are not allowed to wear gloves when operating, are not allowed to be in operation maintenance, refueling cleaning and adjustment; 4. Nails and dirt must be removed before processing old wood; 5. After the daily work, clean up the site, cut off the power supply and lock the switch box; 6. Multifunctional is forbidden? Woodworking machinery integrating chainsaw, planer and electric drill.
16, what should I pay attention to when operating reinforcement machinery?
Answer: 1, machinery should be managed by a special person. Before use, the electrical, fuselage grounding and leakage protectors must be sensitive and reliable, and the safety protection devices must be in good condition; 2. When using the leveler, add a steel pipe about 1m in length. Straightened steel bars should pass through the steel pipe first, and then through the conduit and straightening cylinder to prevent the steel bar tail from popping up and hurting people. 3. When using the cutting machine, you should hold the steel bar tightly. When the punching blade retracts, the steel bar will be sent to the blade, and the cut material will be fed with pliers to prevent injury. 4, using bending machine bending steel bar, steel bar must be straightened first, processing longer steel bar, should hold people steady steel bar; Help the steel bar and the operator coordinate their actions, and do not pull at will; 5. When using cold-drawn steel equipment, the cold-drawn working area should be protected by a fence, and it is forbidden for personnel to cross the working area; The working position of the hoist should be perpendicular to the direction of steel bar stretching to prevent the steel bar from being injured when it breaks; 6, after the work, switch power, lock the brake box.
17, what should I pay attention to when operating the concrete mixer?
Answer: 1, the driver who operates the mixer must receive professional safety training, pass the examination and hold relevant certificates, and non-driver operation is strictly prohibited; 2. When the hopper is lifted, it is forbidden to work or walk under the hopper. When cleaning the bucket pit, the hopper should hang up the double safety hook for cleaning; 3, are not allowed to use tools in the operation into the mixing drum steak; 4. Clean the mixer inside and outside after work, lift the hopper, hang up the double safety hook, turn off the power supply and lock the switch box; 5. Maintenance is strictly prohibited during operation. When repairing and maintaining the mixer, it is necessary to turn off the switch, lock the switch box, put up the sign "No switching on when someone is working", and have a special person to monitor it.
For more information about project/service/procurement bidding, and to improve the winning rate, please click on the bottom of official website Customer Service for free consultation:/#/? source=bdzd