THE ORDER OF THE STATE INSPECTORATE FOR SUPERVISION OF SAFE OPERATION IN THE INDUSTRY, MINING AND THE HOUSEHOLD SECTOR SANOATKONTEKHNAZORAT

of February 14, 2006 No. 26

About approval of "Safety rules of works during the electrowelding works"

In pursuance of the resolution of the Cabinet of Ministers of the Republic of Uzbekistan of July 12, 2000 I order to N267 "About Review and Development of Regulating Documents on Labor Protection":

1. Approve "Safety rules of works during the electrowelding works" according to appendix.

2. Enact these "Rules"... after ten days from the date of its state registration in the Ministry of Justice of the Republic of Uzbekistan.

3. I reserve control of the course of accomplishment of this order.

 

Approved by the Order of the State inspection Sanoatkontekhnazorat of the Republic of Uzbekistan of February 14, 2006 No. 26

Safety rules of works during the electrowelding works

These rules according to the laws of the Republic of Uzbekistan "About labor protection", "About subsoil", "About conservation" and the resolution of the Cabinet of Ministers of the Republic of Uzbekistan of July 12, 2000 of N267 "About Review and Development of Regulating Documents on Labor Protection" establish procedure for safety of works during the electrowelding works.

Chapter I. General part

1. These rules of safety of works during the electrowelding works (further - Rules) extend to the workers and employers connected with accomplishment of electrowelding works in the organizations irrespective of their forms of business and patterns of ownership, and also to the physical persons who are engaged in the specified work types according to the procedure of business activity without formation of legal entity.

2. Rules act on all territory of the Republic of Uzbekistan and shall be considered in case of construction new, reconstruction and modernization of operational entities, workshops, productions, in case of development and operation of the equipment, development and application of engineering procedures.

3. The organization of control over the implementation of requirements of these rules is assigned to the employer.

4. Rules extend to the stationary, figurative and portable electrowelding installations equipped and used in the enclosed space or in the open air intended for accomplishment of engineering procedures of welding, building up, cutting (dividing and superficial) melting and weldings using pressure, including:

a) arc and plasma welding, building up, cutting;

b) atomic and hydrogen welding;

c) electron beam welding;

d) laser welding and cutting (welding and cutting by light beam);

e) electroslag welding;

e) weldings by contact warming up;

g) contact or diffusion welding, dugokontaktny welding.

5. On the basis of Rules in the organization taking into account specific conditions are in accordance with the established procedure developed or brought into accord with them of the instruction for labor protection, technological and operational documents for the corresponding processes (works).

6. Control of observance of requirements of these rules in the course of construction, designings, reconstruction and operation of the electrowelding equipment shall be performed by the company performing the appointed works.

Heads of the companies and their structural divisions, designing specialists, to construction, adjustment and operation of objects of production of electrowelding works, and also the teachers occupied with training of personnel shall have necessary training and examination of these rules according to Standard regulations on the organization of training and examination on labor protection (рег. N272 of 14.08.1996) in volume of the work performed by them.

Chapter II. General requirements of safety

1. Organization of security service of work

7. According to article 14 of the law of the Republic of Uzbekistan "About labor protection" at the companies numbering 50 and more people shall be created services (with maintaining positions) on labor protection from among persons having special preparation. With smaller number working accomplishment of function on labor protection it is assigned to one of heads.

Security services of work work by the provisions approved with trade-union committee and according to the status are equated to the main services of the company and submit to his head.

8. The general system of actions for labor safety during the electrowelding works shall conform to requirements of GOST 12.3.003-86 "SSBT. Works electrowelding. Safety requirements" and fire safety regulations when carrying out welding and other hot work on objects of industries of economy of the Republic of Uzbekistan.

9. At each company the order of the director (the order of board) it is appointed from among the heads and specialists who underwent in accordance with the established procedure examination of these rules, person responsible for safe operation of electrowelding works.

At the company where electrowelding works are performed in several workshops (sites) except person responsible for safe operation of electrowelding economy of the company, for the decision of administration responsible persons on certain workshops (sites) can be designated.

At public service establishments of the population of non-productive nature, and also in the organizations in which staff the position of the division manager or specialist with technical education is not provided responsibility for safe operation of electrowelding economy can be conferred on the worker who had training according to requirements of Item 6 of these rules.

10. Obligations of person responsible for safe operation of electrowelding economy of the company are established by the job description.

Control of working conditions is exercised by bodies of sanitary inspection and sanitary and industrial laboratories at all stages of engineering procedure of welding. At the companies certification of sanitary condition of workshops and production sites for the purpose of constant control of compliance of working conditions to safety requirements is made.

11. General interdepartmental control of labor protection and holding actions for providing healthy and safe working conditions is performed by service of the company for labor protection.

12. On production three-stage administrative public control over labor protection condition is made.

2. Dangerous and harmful production factors for arc methods of welding, building up and cutting of metals

13. Processes of welding, building up and cutting of metals are sources of formation of the dangerous and harmful factors capable to make adverse effect on workers. Treat dangerous and harmful production factors:

a) solid and gaseous toxic substances as a part of welding aerosol;

b) intensive radiation of welding arch in the optical range (ultra-violet, visible, infrared);

c) intensive thermal (infrared) radiation of the welded products and welding bathtub;

d) sparks, splashes and emissions of the melted metal and slag;

e) electromagnetic fields;

e) ultrasound;

g) noise;

h) static load;

i) dust;

j) gas.

Harmful and dangerous production factors are given in appendix 1 to these rules.

14. The quantity and structure of welding aerosols and aerosols of solder depend on chemical composition of welding materials and the welded metals, methods and modes of welding, building up, cutting and soldering of metals.

In zone of breath of welders and carvers the welding aerosols containing different metals in structure of firm phase (iron, manganese, silicon, chrome, nickel, copper, titanium, aluminum, tungsten, etc.), their oxide and other connections, and also gaseous toxic substances can arrive (fluoric hydrogen, silicon tetrafluoride, ozone, carbon monoxide, nitrogen oxides, etc.). Their threshold limit values in the welding atmosphere are given in appendix 2 to these rules.

Impact on organism of solid and gaseous toxic substances as a part of welding aerosols can be the reason of chronic and occupational diseases.

15. Intensity of radiation of welding arch in the optical range and its spectral structure depend on capacity of arch, the applied welding materials, protective and plasma-forming gases, etc. In the absence of protection damage of organs of vision (elektrooftalmiya, cataract, etc.) and integuments (eritema, burns, etc.) is possible.

16. Intensity of infrared (thermal) radiation of the welded products and welding bathtub depends on temperature of preliminary heating of products, their dimensions and designs, and also on temperature and the sizes of welding bathtub. In the absence of individual protection equipment impact of thermal radiation can lead to violations of thermal control up to heatstroke. The contact with heated metal can cause burns.

17. Sparks, splashes and emissions of the melted metal and slag can be the reason of burns.

18. Intensity of electromagnetic fields depends on design and capacity of the welding equipment, configuration of the welded products.

Nature of their influence on organism is determined by intensity and duration of impact.

19. Sources of noise are pneumatic actuators, fans, plasmatrons, power supplies, etc. Impact of noise on organism depends on spectral characteristic and level of sound pressure.

Plasmatrons, ultrasonic generators, electrodes, etc. can be source of ultrasound. Action of ultrasound depends on its spectral characteristic, intensity and duration of impact.

20. Source of local vibration at workers of assembly and welding workshops are the hand pneumatic tools used for cleaning of seams after welding.

21. The static load on the upper extremities in case of manual and semi-automatic methods of welding, building up and cutting of metals depends on weight and form of electrode holders, torches, cutting torches, flexibility and mass of hoses, wires, duration of continuous work, etc. Diseases of the neuromuscular device of humeral belt can result from overstrain.

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