The new standard of the hottest coating measures t

2022-07-30
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New coating standard: China's shipbuilding industry has taken countermeasures new coating standard: China's shipbuilding industry has taken countermeasures December 27, 2006 the 82nd International Maritime Organization (IMO) sea safety meeting unanimously adopted the "performance standard for protective coatings for special seawater ballast tanks of all types of ships and the double sides of bulk carriers" in the anxious eyes of the ship industry on December 8. The standard will be compulsorily applicable to the special seawater ballast tanks of all ships with a gross tonnage of more than 500 and the double side spaces of bulk cargo ships with a height of more than 150 meters that have signed construction contracts after july1,2008. If there is no construction contract, the keel laying ships after january1,2009 or the ships delivered after july1,2012 must comply with this standard

The introduction of the new coating standard will undoubtedly stir up a thousand waves and will become an important restricting factor for the development of China's shipbuilding industry in the future; However, it should also be noted that since China's shipbuilding industry has been in line with international standards, it has experienced many baptisms, responded to challenges with a positive attitude and achieved brilliant sublimation

introduction -- to safeguard China's interests to the greatest extent

corrosion of hull structure, especially the corrosion of sea water ballast tank, is one of the important factors affecting the safety of ship structure. The reason for some major ship accidents is that the structural strength of the ballast tank is greatly reduced due to serious corrosion. Therefore, this issue has always been concerned by IMO. since the 76th IMO sea safety meeting in december2002, IMO has decided to formulate a mandatory ballast tank coating standard

since the standard will involve different interests in shipping and shipbuilding, during the formulation process, the two sides representing different interests have great differences on the technical requirements in the standard. As the chairman of the communication group, China Classification Society, under the leadership of the Ministry of communications, got involved in this work earlier and informed the Chinese shipbuilding industry of relevant information in a timely manner, which promoted the attention of the Chinese shipbuilding industry to the formulation of this standard. In the process of the formulation of this standard, a mechanism for the Chinese shipbuilding industry to participate in the formulation of relevant shipbuilding standards in IMO was formed

China has held more than a dozen working meetings to study the Countermeasures in the formulation of standards, organized and participated in four coordination meetings of coating standards in the shipbuilding industry of China, Japan and South Korea, and submitted to relevant IMO organizations Chinese proposals on the scope of application of standards, pre cleaning, soluble salt limit on steel surface, surface dust and surface treatment after closure, as well as the mandatory implementation date of standards Proposals on coating maintenance and leftover technical issues, and sent experts to attend relevant meetings of the Chinese delegation, which played an active role in the working group and the expert group and achieved the following results: excluding empty tanks from the scope of application of the standard; Deleted the pre washing requirements in the original draft; The soluble salt content on the steel surface is relaxed from less than 30mg/m2 to less than 50mg/m2; As for the applicable date of the amendment to the Convention, the "date of signing the construction contract" shall be used as the applicable date of the coating standard; After the ballast tank is closed, the steel surface treatment is changed to allow large joints to be polished with tools; The requirement for steel surface roughness correction in the original ISO standard is canceled, avoiding the situation that most shipyards in China may need to add an additional coating due to the original correction requirement

through the efforts of the Chinese delegation, it not only avoided the situation that the original draft requirements would make almost all domestic shipyards face great difficulties, but also won valuable preparation time of about two years for domestic shipyards, and safeguarded the interests of China's shipbuilding industry to the greatest extent

impact -- the national shipbuilding industry is facing a competition for strength

at present, the actual situation of general coating in domestic shipyards is far behind the requirements of the new coating standard. To meet the requirements of the new standard, greater investment and improvement are required

according to the preliminary investigation and analysis of the main shipyards and some local backbone shipyards belonging to the two major shipbuilding groups in China, if China's shipyards implement the standard under the existing conditions, the national shipbuilding output may be reduced by more than 20%

for the implementation of this standard, due to the large scale of shipbuilding enterprises in Japan and South Korea, advanced shipbuilding facilities (equipment), modes and processes, and high management level, although the implementation of this standard will bring some problems, each shipyard can basically meet the requirements of the coating standard with a little effort. However, the number of shipbuilding enterprises in China is large and the scale is small, so the environment of production workshops is often noisy, and the technology and management are relatively backward. The difficulties encountered in implementing this standard are much greater than those of shipyards in Japan and South Korea

for the large state-owned backbone shipyards affiliated to the two shipbuilding groups, due to the relatively good shipbuilding facilities and management level, although the standard brings some difficulties, it can be achieved through efforts in general, but the output has decreased

for a large number of small and medium-sized shipyards, the implementation of the new coating standard may be a life and death test. Some medium-sized backbone shipyards have relatively high management level due to certain shipbuilding facilities, but lack of capacity in special workshops and equipment for sand blasting and spraying, which will greatly prolong the production cycle. In some shipyards, the production cycle at the stage of sectional processing and final assembly may increase by more than 50%, which is bound to seriously affect the output of these shipyards, increase the cost burden and reduce the benefits, It will directly threaten the survival and development of the shipyard

for small and medium-sized shipyards with seriously insufficient production facilities, if they do not increase investment to solve the necessary production conditions, change the shipbuilding mode and improve the necessary construction technology, it will be difficult to meet the requirements of this standard, and they may have to withdraw from the market of building ships for international navigation

the implementation of this coating standard involves not only the coating and coating itself, but also shipbuilding hardware facilities, shipbuilding mode and shipbuilding process flow, coating and coating process, experimental test equipment, coating and coating inspection and approval, verification and inspection institutions, inspectors' qualifications and approval institutions, etc. It is estimated that the investment needed to build sand blasting and spraying plants and equipment for ships with an annual output of million tons will reach million yuan

in a word, the shipyard must face the competition of input, improvement and technology in order to successfully pass the test in the new shipbuilding environment

Countermeasures -- help the ship industry adapt to the standard changes

how to organize the implementation of this new international standard has an impact on China's shipbuilding industry. It is important for the hydraulic universal experimental mechanism with manual control. Experts suggested that a joint working mechanism should be established within the framework of the major maritime coordination mechanism between the Commission of science, technology and industry for national defense and the Ministry of communications to study and digest relevant international standards. Within two years, the technical conditions for ballast tank coating, guidelines for inspection and approval of coatings, calculation of damaged area of ballast tank coating and definition of closure joint range, determination method of water-soluble salt content, method for performance evaluation of ship coatings should be organized and completed The preparation of technical standards or guiding documents such as the system and format of technical documents for ship coating is used to guide the production of shipyards and help the shipbuilding industry adapt to the changes of new standards

the urgent task is to organize and train professionals who meet the new coating standards. The coating standard clearly requires that the inspectors shall have the qualification of nacei class I (American Standard), frosio red (Norwegian standard) or the equivalent qualification recognized by the competent authority/competent authority recognition organization. At present, there is no industry implemented coating inspection personnel qualification training and recognition system in China. It is preliminarily estimated that there are only more than 100 qualified inspectors who have obtained naceii or frosio red. Most of these qualified inspectors are employed by coating manufacturers and do not have the nature of a third party. However, few shipyards in China have obtained the above certificates. Therefore, it is urgent for China to establish its own training and Certification Center for coating inspectors and to be in line with international standards. From the workload of coating inspection, experts preliminarily believe that the number of professional inspectors who need to meet the requirements of the standard should not be less than 700 to 1000

in view of the fact that shipyards and trading companies are generally concerned about the signing of contract terms, the industry management office of the Commission of science, technology and industry for National Defense said a few days ago that it will organize the study and formulation of contract terms on coating requirements in the unified shipbuilding contract, so as to coordinate the interests of shipbuilding and ship owners and prevent contract disputes; At the same time, China Shipbuilding Industry Association and the shipping branch of China Chamber of Commerce for mechanical and electrical import and export will be invited to jointly lead the establishment of a special working group to organize relevant shipyards, ship trading companies, China Classification Society and relevant coating experts to study and put forward preliminary guidance within one month for the reference of shipyards and ship trading companies in the whole industry

China is not only a large country that builds ships with wide speed regulation limitations, but also a large shipping country. In the long run, the coating standard plays a positive role in shipping and shipbuilding. Improving the coating standard will increase the coating life, make the ship safer, and also benefit China's shipping. Although the implementation of the current standard will have a great impact and difficulties on China's shipbuilding industry, it is also a challenge to China's shipbuilding industry. It will promote the management and technology level of China's shipyards and promote the development of shipbuilding technology. With the help of the government and relevant organizations, Chinese shipyards should go all out to make preparations and continuously improve the technical level and management level of shipbuilding, so as to become a large and powerful shipbuilding country in the world σ B (PA) means it can be more competitive

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