UL is English underwriters Laboratories (system Laboratories Inc.) the shorthand. UL safety test is the most authoritative, is also engaged in safety test and appraisal of the larger community of civil institutions. It is an independent, non-profit, professional organization for public safety test. It USES science to study the method of testing of the various materials, devices, products, equipment, construction and other any hazard to life and property and the harm degree; Sure, write, and the corresponding standards and help reduce of issue and to prevent the loss of lives and property caused by data, at the same time to carry out the truth research business. In short, it is mainly engaged in product safety certification and safety certification business, the ultimate goal is to get fairly safe level for the market of goods, contribute to the health and property safety guaranteed. Is product safety certification as an effective means to eliminate technical barriers to international trade, UL in order to promote the development of international trade also plays a positive role.
UL was founded in 1894, the initial stage of UL master in fire insurance department to provide funding for a movement, until 1916, UL is completely independent. During the past hundred years of development, UL has become a world famous certification body, itself has a set of strict organization and management system, the standard development and product certification program. UL by a security experts, government officials, consumer, education, public utilities, insurance and management council composed of representatives of the standards department, daily work by the President and vice President. At present, the UL in the United States has five laboratory, headquarters in Northbrook town, north of Chicago in Taiwan and Hong Kong respectively at the same time set up corresponding laboratory.
UL certification track inspection
As an integral part of the UL certification, in order to guarantee the UL listing, recognition products continue to meet UL standard and requirements, UL has established "track inspection system"." Follow-up inspection "is made by the site representatives of UL field distribution in all over the world to a local factory site track inspection of UL products. Its purpose is through to the plant production process, and product inspection process, control the UL standard and tracking inspection rules for verification, to ensure that the manufacturer production process, testing process and product always in line with the requirements of UL.
The basis of a track inspection
In general, UL requirement for factory production system is not too high, only request for annual measuring instrument equipment, save the record their factory inspection, and control of nonconforming product has certain means.
Inspection, the site representative (UL inspector) will mainly concentrate on the product itself, they will check the products according to the inspection according to the detailed structure of parts and assembly. For parts involved in product safety, the general will indicate the requirements for the UL product details, and will indicate the manufacturer and model; For the shell, shield, such as injection molded parts, general rules will indicate the requirements of the raw material and size. Defined in field representatives to check the above and the detailed rules for the UL mark.
In addition, if the conditions or FUII or field test was carried out on the product in the standard requirement, the site representatives each test requires factory inspector accordingly, and the representatives in the next witness. If still in the detailed rules for the request directly to the UL testing of tracking, factories should cooperate with inspectors to make samples accordingly, written by the inspectors sample label, sealed samples provide address and, after the factory sent to the corresponding UL lab.
If factory products completely accord with the requirement of UL corresponding Inspection standards, or other violation of service agreement, inspectors will issue a tracking survey Report (Inspection Report); Factory representative after confirm its content is accurate should sign the report; A test is completed. If appeared in the process of inspection and testing standard is not in conformity with the situation, the inspector will issue a Notice of change (Variation Notice), and take corresponding measures according to specific situation.
For unauthorized products use UL marks, inspectors will be asked to remove UL mark; For the products do not conform to the requirements of the UL, inspector will require the factory to remove UL mark or rework to conform to the requirements; If you don't agreed to the comments of the factory to the above, you can temporarily keep UL tag, but must stop shipment, inspector will inform the corresponding lab, the situation is determined by UL reply whether can keep UL mark; If only a few small problems, it doesn't affect the product's safety, the provisional acceptance decision will be made to the inspector, and report to the corresponding laboratory; If it is some obvious standard error, units such as typing errors or mistakes, does not affect the eligibility of factory products, but as the UL document processing, inspectors will issue a notice of change. In general, unless it is the responsibility of the UL company, inspector will require the factory does not meet the various to explain the corresponding lab, UL will answer with your explanation.
UL certification process
Product application UL symbol consists of five steps:
1. The applicant to submit information about the company and products
Written application: you should require UL company in writing of your company's products for testing.
Company information: provide the following units of detailed and accurate both in Chinese and English name, address, contact person, postal code, telephone and fax.
(a). Applicant: apply for product testing and is responsible for the entire cost of the engineering services company
(b). Listed companies: in various products UL company directory lists the name of the company
(c). The production factory, manufacturers and producers.
Product information: information shall be provided in English. First determine whether your product belongs to the scope of the UL testing may consult UL located in guangzhou and Shanghai offices.
(a). The name of the product: to provide the full name of the product.
(b). Product model: all need detailed experiment of product model number, species or classification, etc.
(c). Product intended purpose: for example: homes, offices, factories, mines, ships, etc.
(d). Parts list: spare parts and the detailed composition model (classification), rating, and the name of the manufacturer. For insulation materials, please provide the name of the raw materials, such as: GE Polycarbonate, Lexan Type 104. When components has the UL certification or recognize or, please prove the specific models of the parts and components and indicate the UL file number.
(e). Performance: for electrical and electronic products. Provide electrical schematic diagram (wiring diagram), electronic tables.
(f). Structure: for most products, need to offer products of charts or explosion diagram, ingredients, etc.
(g). Product pictures, instructions, security, etc, or installation instructions, etc.
2. According to the product information provided by decision
When product information is complete, the UL engineer according to the data to the following decision: experiments according to the UL standard, testing of engineering cost, time and quantity samples, notify you in writing, and send the formal application form and tracking service agreement to your company. Stated in the application form to the limitation of cost, is the biggest project UL according to the detection project and estimate cost, without the written authorization of your company, the cost could not be more than the limit.
3. Apply for remittance, send back to the application form and samples
The applicant in the application form and tracking service agreement is signed, and send the form back to UL company, at the same time, through the bank transfer, or by express mail at the post office mail samples, please send test samples for proper instructions (such as name, type). Application form and samples please send separately. For each application program, UL will specify only one Project number (Project No.) in the remittance, send us samples and application form, you indicate the Project number, name of applicant, in order to UL.
4. Product testing
Received your company to sign the application form, after remittance, experimental samples, UL will inform you the experiment project completion time. General in the United States UL lab for product testing, UL can also accept the examined in the third party test data. Experimental samples will be sent according to your request or destroyed.
If the product test results conform to the requirements of the UL standard, UL testing qualified report will be issued and tracking Service details (FollowUp Service Proccdure) test report will detail test conditions, samples, product structure and the performance indexes of products suitable for the use of safety signs, etc. In the tracking service details including the description of the product and the UL area inspector instructions. Test report of a copy to send you to apply for company, a copy of the tracking service details sent to each factory.
If the customer for engineering testing or tracking test results have different opinions, can discuss with other engineers or site representatives without fear of endangering the conclusion later. If can't get satisfactory answer in this level, the customer can to a higher layer of complaint, until the President.
APPENDIX (attached)
Part of the detailed rules, including the responsibility of the factory and field representatives as well as to the relevant test requirements. Can also describe to UL test sample.
APPLICANT (the APPLICANT)
Apply to the UL component to its, test of the enterprise or individual product or system. In law, the party will be responsible for the cost of testing and tracking service, and of all information related to test results have rights. See also the agent.
AUTHORIZATION PAGE PAGE (AUTHORIZATION)
Archive in tracking service factory inspection rules for the top of a page, to authorize the corresponding tracking test service classes or R (L) and allow the authentication marks
The CATEGORY of CONTROL NUMBER (CCN) CONTROL (CATEGORY)
UL listed, recognition, classification, service in the different product category of the character representation. Such as AVLV2 said electronic line; QOWZ said portable lamps and lanterns. Generally, XXXX products for column names, XXXX2 is approved product, XXXX7 said Canada standard listing products, XXXX8 said Canada standard approved products.
COMPONENT (spare parts)
A portion of the products, in addition to being part of a complete product to participate in the entire product test, also need to separate to test its performance and/or structure. Components can be column name, approval or the column components.
CONDITION OF ACCEPTABILITY (applicable conditions)
The projects listed in the approved or not the column name parts of the report, but not as a representative of the on-site inspection basis. These projects, based on the results of the tests indicate the limits and conditions of the parts with complete products. In some kind of switch report, for example, may be specified in the "applicable conditions" is only applicable to the product under 1 a current or temperature below 125 c.
The CONTROL NUMBER (CONTROL)
The UL recognition mark one of the four possible part of designated by UL. According to the different product categories and different kinds of tracking service, control number may change on a regular basis.
The FACTORY IDENTIFICATION (FACTORY)
Production of the same products from factories in different manufacturers use an identification mark used to distinguish a product which factory is the production.
The FACTORY INSPECTION, FACTORY INSPECTION)
To deal with UL authentication information to be submitted
Product application UL symbol consists of five steps:
1. The applicant to submit information about the company and products
Written application: you should require UL company in writing of your company's products for testing.
Company information: provide the following units of detailed and accurate both in Chinese and English name, address, contact person