3-1-1. JIS standards
The JIS are Japanese national standards established in accordance with the Industrial Standardization Act. The JIS (Japanese Industrial Standards) regulate a wide range of aspects, including product standards, measurement methods, and services. The standards on their own are voluntary and unenforceable, but they can be compulsory in cases such as where they are quoted in laws. Suppliers of products issue a Declaration of Conformity in conjunction with JIS compliance to indicate which standards the products comply with. Riken Keiki also provides this Declaration of Conformity documentation for JIS compliant products in PDF format on the corresponding product pages of its website.
Previously, the JIS standards were mainly enacted by a competent minister after drafts compiled by the draft proposal committee made up of relevant organizations have been discussed by the Japanese Industrial Standards Committee (JISC). However, since July 1, 2019, to accelerate the enactment process, proposals can now be made to the competent minister from specified private sector certifying bodies (certified industrial standards creation bodies), bypassing the JISC. These certifying bodies include the Japanese Standards Association (JSA) and the Japan Iron and Steel Federation (JISF). Individual standards can be viewed on the JISC website.
JIS codes consist of a letter of the alphabet indicating the division after “JIS”, followed by four or five digits and the year of issue.
Example: JIS T 8201:2010 → Oxygen deficiency indicator (2010 issue)
List of division letters
A (Civil engineering and architecture)
B (Mechanical engineering)
C (Electronics and electrical engineering)
D (Automotive engineering)
E (Railway engineering)
F (Ship building)
G (Ferrous materials and metallurgy)
H (Nonferrous materials and metallurgy)
K (Chemical engineering)
L (Textile engineering)
M (Mining)
P (Pulp and paper)
Q (Management systems)
R (Ceramics)
S (Domestic wares)
T (Medical equipment and safety appliances)
W (Aircraft and aviation)
X (Information processing)
Z (Miscellaneous)
3-1-2. JIS standards relevant to Riken Keiki products
・ JIS T 8201 - Oxygen deficiency indicator This applies to oxygen meters used for oxygen concentration measurement, monitoring, or alarm purposes in environments posing any risk of oxygen deficiency. It stipulates oxygen meter performance, construction, and test methods.
・ JIS T8205 -
Hydrogen sulfide indicator/alarm This applies to hydrogen sulfide meters used for hydrogen sulfide concentration measurement, monitoring, or alarm purposes in environments posing any risk of hydrogen sulfide generation. It stipulates hydrogen sulfide meter performance, construction, and test methods.
・JIS T 8206 - Flammable gas detectors
This applies to portable, transportable, and fixed gas detectors used to detect or measure the concentration of combustible gas or vapor in the air. It stipulates combustible gas detector performance, construction, and test methods. This standard was created by modifying and removing certain parts of IEC 60079-29-1 (second edition, issued 2016) to reflect the actual state of affairs within Japan.
・JIS Q 1000 - Conformity assessment - Guidelines for suppliers’ declarations of conformity with product standards This stipulates general requirements for Declaration of Conformity documentation by product suppliers to demonstrate compliance with JIS standards.
3-1-3. Explosion-proof electrical equipment type examination
Explosion-proof electrical equipment type examination is a Japanese explosion-proof type examination that must be obtained from a registered type certification body in accordance with Article 44-2 Paragraph 1 of the Industrial Safety and Health Act (Law No. 57 of 1972) for explosion-proof equipment installed or used in hazardous locations within Japan. Once the type examination has been passed, the manufacturer may manufacture and sell any number of products with the same construction and specifications within the validity period without undergoing testing. The validity period is three years, and must be renewed once every three years. However, purchasers may continue to use products as explosive-proof products regardless of the validity period once they have been delivered after passing the type examination. Type examination pass labels are affixed to products that have passed the examination indicating the examination pass date, pass number, and name of the person granted the pass certificate.
3-1-4. JG type approval
JG type approval is a system under which the Ministry of Land, Infrastructure, Transport and Tourism confirms that legal marine-use products used on Japanese-registered marine vessels meet the specified performance. “JG” is an abbreviation for “Japanese Government”. Products covered undergo type testing by the JG when an application is made for approval testing, and once approved, products undergo individual examination by Nippon Hakuyohin Kentei Kyokai (HK) when they are shipped. After obtaining JG type approval and HK individual examination, portable gas detectors can be used on Japanese-registered marine vessels with a gross tonnage of 500 tons or more operating on international shipping routes to which the use of portable gas detectors applies, in accordance with MSC. 1 Circ. 1477 and SOLAS XI-1 Regulation 7.