GB 24390-2009Shot(air)blast equipment - Safety requirements (English PDF)

4.2 Mechanical hazards

4.2.1 generated by the device projectile projectile hazards.

4.2.2 Risk of crushing parts produced by the device, cut the risk of collision danger.

4.2.3 by the rotary motion of the device element and/or rotation produced by winding danger.

4.2.4 by the device components and/or workpiece dropped or thrown shock hazard generated. Stab or stabbed danger

4.2.5 equipment surfaces, edges or corners produced.

4.2.6 by the job or the surrounding high-altitude equipment produced by slips, trips, fall hazards.

4.2.7 by the hydraulic system, pneumatic system and high-pressure fluid jet blast pot generated or risk of bursting.

4.2.8 installation, accident during transport due emphasis, poor stability, strong enough spreader other causes tilting, moving or falling hazard.

4.3 Electrical Hazards

4.3.1 shock hazard generated by the electrical system, the thermal radiation risks.

4.3.2 generated by the blasting hose static build up electrostatic discharge hazards.

4.4 noise hazard Hearing loss and other equipment noise hazard.

4.5 hazardous materials and substances produced The risk of contact or inhalation of dust caused by operator 4.5.1.

4.5.2 fire or explosion hazard of dust produced by the manufacturer.

4.6 Device Ignore dangerous design ergonomic ergonomics principles arising

4.6.1 In operation, is not conducive to healthy posture or excessive force when monitoring or maintenance.

4.6.2 ignores the use of personal protective equipment.

4.6.3 obvious warning signs in dangerous places are not set.

5.1 Basic requirements

5.1.1 The equipment should minimize the risk by design, it intrinsically safe. Can not be adequately avoided or sufficiently limited by design Risk system should be used security guards to protect the operator.

5.1.2 Equipment safety design should be consistent with GB/T 15706.1, GB/T 15706.2 and GB 5083 regulations.

5.1.3 In addition to safety equipment shall comply with the provisions of this standard, it should also comply with the relevant provisions of GB 20905.

5.1.4 Control system components related to the safety and security requirements should be designed to comply with the relevant provisions of GB/T 16855.1 of.

5.1.5 Equipment design should fully reflect ergonomic principles, and should be consistent with GB/T 14776, GB/T 16251 and other relevant standards Provisions

5.1.6 Who can not be eliminated by design or sufficiently reduced, and its security guards are not completely effective or ineffective legacy wind Insurance, should be through the use of user information notification and warning devices. Use of information is an integral part of the equipment supplied. Use of information should not be To compensate for design flaws or safety devices in place. Safety requirements for mechanical hazards

5.2 Door should Shot and/or shot control device

5.2.1 interlock device, only the doors are in the closed state, shot blasting and/or shot to play move. Door equipment shall be accompanied by a well-fixed warning signs.

5.2.2 The equipment should be sealed well, all seals should be able to withstand the impact of live projectile and wear. Door and observation window after the device is turned off There should be no projectile flying. If you meet this requirement will seriously affect the performance of the device, it should set up other effectively prevent bomb at the door Pills flying security measures.

5.2.3 observation window on the device should not be less than 5mm thickness crush colorless transparent plate.

5.2.4 The device shall be fitted in the inner wall of the validity of vulnerability, can withstand impact and wear bullet shield. Install shield should be stronger and more It should be easy to change.

5.2.5 When engaged in installation, adjustment, repair or maintenance operator at the time of the apparatus, machinery and equipment should be in the zero state, to ensure that other people Members will not start blasting and/or shot control system and for the pills.

5.2.6 hand-held gun-type blasting apparatus in addition to satisfying the provisions of other relevant requirements of 5.2, it must also meet the following requirements.

a) should be the starting shot under the sole control of the operator, the end should be conducted under the operator can control;

5.4 Control System

5.4.1 interlock control system should be able to achieve a predetermined operation sequence.

5.4.2 electrical interlock should have the function of preventing unexpected failure occurred due to malfunction and/or hazardous events.

5.4.3 The control system should have the necessary automatic monitoring function, the alarm is triggered in the event of a failure and can not start before troubleshooting Moving a new cycle of work.

5.4.4 If the device has different ways of working, cycle mode (eg manual, automatic, linkage, etc.) should be used switch and switch Placed in the cabinet lock, but also on the working mode, loop mode respectively with a key lock or switch with removable handle.

5.4.5 shall be fitted with emergency stop devices on equipment, emergency stop devices should be able to stop all hazardous operations and sports. The emergency stop device reset does not Attention should be restarted, stop the functional requirements and design principles comply with the relevant provisions of GB 16754.

5.4.6 Control System pause, stop, reset the device should not cause any dangerous situation. Safety requirements for electrical hazards

5.5 Electrical system

5.5.1 Electrical equipment should be protected from danger in accordance with the provisions of GB 5226.1. Shall be fitted with devices to eliminate static electricity from a nozzle

5.5.2 blasting hose and gun, or use of anti-static type blasting hose.

Note. The grounding device connected directly to the hose is preferable. Safety requirements

5.6 Noise dangerous

5.6.1 under idling conditions, configure one or two shot blasting equipment and configuration of the equipment over two shot blasting, the noise limits for points Do as 90dB (A), 93dB (A). Shot noise limit of 85dB (A). Noise measurement method according to JB/T 6331.2 requirements.

5.6.2 Equipment should take measures to minimize the risk of noise radiation.

5.6.3 The vent valve should be used muffler.

5.6.4 pipeline should not be arranged in parallel contact with each other to prevent noise and unusual sound.

5.7 Materials and substances dangerous security requirements

5.7.1 equipment in use should be equipped with ventilation and dust removal system is provided with a dust removal system or connection interface. Ventilation equipment should be able to meet in addition to Dust requirements.

5.7.2 ventilation and dust removal system should be measures to prevent dust clogging the pipe, dust pipe bend at the transition should be minimized. Each part should not leak dust phenomenon

5.7.3 dust removal system work.

5.7.4 When throwing blasting operations generate explosive mixture of dust, dust removal equipment and ventilation ducts and systems should be equipped with effective explosion protection measures CONSTRUCTION. These measures include in addition to 5.7.1 -

5.7.3 should include. Electrical System

a) equipment should be able to meet the fire and explosion prevention requirements (such as EDM, etc.);

b) housing equipment, spare parts, etc. should direct electrostatic grounding. Inconvenience or process does not permit direct grounded through electrostatic material Material or article indirectly grounded. Direct electrostatic grounding resistance should not exceed 100Omega, indirect grounding resistance should not exceed 107Omega;

c) pipeline dust should adopt anti-static material or metal;

d) the operator inside the device should take anti-static measures;

e) prohibiting the use of direct methods grounded metallic conductor or screen with a high-speed flow of dust exposure to eliminate static electricity;

f) When the presence of aluminum, magnesium, titanium and other metals or alloys dust, should prevent friction sparks;

g) equipment should be set to vent port, vent pressure release rate should be fast enough to ensure that the equipment is not damaged structure. The operation of the pressure release The body does not cause a risk to the operator.

6.3 Method 2

--- detection determination With detection instruments, meters preference measurement methods and standardization of existing, required to check whether the provisions defined within. If the measurement method due to the current technical limitations can not prove that the device meets the requirements, or safety requirements and/or qualitative measures And so on, press the method given in 6.4, 6.5.

6.4 Method 3

--- determination calculations and/or viewing pattern The use of calculations and/or drawings to analyze and check the equipment meets the requirements for certain specific requirements (such as stability, center of gravity position, mechanical Strength, etc.) This technique is useful, if only by calculation and/or pattern can not draw definitive conclusions, given the

6.5 method press.

6.5 Method 4

--- observe judgment By visual determination of specified components, check whether the device must have the requirements and performance. NOTE. To investigate the use of information or review includes checking equipment.

7.3 User's Guide

7.3.1 Instructions shall comply with

6.5 and GB/T 9969 provisions of GB/T 15706.2-2007. Proper repair or maintenance of safety-critical equipment operator

7.3.2 should be emphasized in the instructions for use.

a) Prior to any part of the operator's body was placed in the danger zone, should put the device into zero mechanical condition;

b) should always check whether there is a soft spot blasting hose, leaky place. Deal with defective hoses for repair or replacement;

c) All metal tube for pellet systems and accessories should be inspected regularly to prevent excessive wear; defective pipes and fittings shall be Repair or replacement;

d) broken or badly worn, wear and corrosion protection plate, impeller, directed sets, sub-pill round and fasteners, etc. should be replaced, and Periodic inspection;

e) All seals prevent flying projectiles if found defective and should be replaced;

f) all support the workpiece carrier or load institutions such as defective and should be replaced;

g) shall take measures to prevent scattered on the ground around the equipment and cause human projectile slips;

h) used hooks, spreader according to relevant provisions of periodic inspection;

i) periodically lubricate lubrication points.

7.3.3 Instructions shall include the following information.

a) use of the equipment and the characteristics of the device according to the data listed in 7.2.2. Furthermore, it should include.