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Volume 128, Special Chapter 77
July 12, 2011
Royal Gazette
I
Announcement of the Department of Welfare and
Labor Protection
Welfare on the criteria and methods for testing crane components and equipment
Whereas the Ministerial Regulations on the Standards of Administration and Management of Safety, Occupational Health
and Working Environment for Machinery, Cranes and Boilers B.E. 2009 stipulate that:
The employer must arrange for the testing of crane components and equipment at least once a year according to the type and nature
of the work, in accordance with the criteria and methods announced by the Director-General.
Pursuant to the powers under Section 50 of the Ministerial Regulations prescribing standards for administration and
The Occupational Safety, Health and Environment Management Act B.E. 2552 is a law that contains certain provisions regarding the
elimination of rights.
and the freedom of persons, which Section 29, together with Section 33, Section 41 and Section 43 of the Constitution of the Kingdom
of Thailand stipulates that it can be done by relying on the powers under the provisions of the law, the Director-General of the
Department of Labor Protection and Welfare therefore issues an announcement as follows:
Point
ÿ
This announcement is called the "Announcement of the Department of Labor Protection and Welfare on the Criteria
and methods for testing components and equipment of cranes" Section 2 This
announcement shall come into force from the day following the date of its publication in the Government Gazette onwards.
Section 3 The employer shall arrange for testing of crane components and equipment according to type.
And the nature of the work is as follows:
(1) Cranes used in construction work.
(a) The safe lifting capacity as specified by the manufacturer does not exceed 3 tons. There must be an arrangement for
Test crane components and equipment every 6 months.
(b) The lifting capacity is more than 3 tons. The components must be tested and
Crane equipment every 3 months
(c) Where there is no detail of the safe lifting capacity as specified by the manufacturer in the test, the employer
shall test using the lifting capacity as specified by the engineer.
(2) Cranes used in other
Etc.
Tons but not more than 3 tons
applications (a) The safe lifting capacity is as specified by the manufacturer, starting from 1
Crane components and equipment must be tested once a year.
(b) If the lifting capacity is more than 3 tons but not more than 50 tons, testing must be arranged.
Crane components and equipment every 6 months (c) The lifting
capacity is more than 50 tons, the components must be tested.
and crane equipment every 3 months
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Volume 128, Special Chapter 77
July 12, 2011
Royal Gazette
(d) that does not contain details of the safe lifting capacity as specified by the manufacturer during testing.
Let the employer test using the lifting capacity as specified by the engineer,
Section 4. Cranes according to Section 3 that have been out of service for 6 months or more, or cranes that have
Repairs that affect the safety of the crane must be tested before reuse.
Components and equipment of cranes
Section 5 Criteria and methods for testing components and equipment of cranes shall be carried out as follows:
(1) Load bearing test
(a) Before using a new crane, it shall be tested for load bearing as follows:
1) Size not exceeding 20 tons, test the weight bearing
ÿ
Equal to but not exceeding 1.25 times
capacity at the safe lifting capacity.
2) For a size greater than 20 tons but not exceeding 50 tons, additional weight bearing tests must be performed.
5 tons from safe lifting capacity
(b) Used cranes shall be tested for a load capacity of 1.25 times the actual working load.
Maximum without exceeding the safe lifting capacity specified by the manufacturer. In the event that there is no safe lifting capacity specified by the manufacturer.
Specify the load bearing test as specified by the engineer.
The weight used for lifting test may be a real weight test or a weight test.
Load Simulation
(2) The measurement of size and diameter must use a tool with a measurement resolution of not less than
ÿ.ÿ
Millimeter
(3) Inspection of welds shall be carried out by visual inspection or other methods.
Appropriate
Section 6 The employer must provide documents containing information on testing items of components and equipment for
Crane with a mechanical engineer as certifier, a photo of the engineer during testing and a copy of the license.
Practice the engineering profession and keep it as evidence for inspection by labor inspectors.
Section 7 The employer must comply with the recommendations on how to correct structural defects or
Any or all parts of the crane or engineering imperfections as recorded.
Of the testing engineer
Announced on July 6, 2011
Amporn Nitisiri
Director-General of the Department of Labor Protection and Welfare