JIS Z 8401 PDF

Find the most up-to-date version of JIS Z at Engineering JIS Z Guide to the rounding of numbers (FOREIGN STANDARD). Available for Subscriptions. Content Provider Japanese Industrial Standards [JIS] . Correct: Rule B of JIS Z Rule A of JIS Z Remarks: This erratum is for correcting the first edition of this Standard. Japanese Standards Association.

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Round to one decimal place.

Then, an attenuation-factor curve shall be created. Participation is free and the site has a strict mis policy. When y -ray irradiation equipment with the similar value setting is used independently, it shall be included in this category. You can request verification for native languages by completing a simple application that takes only a couple of minutes.

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The 70 ii m dose equivalent is indicated by Hi ,m. An initial indicated value shall be obtained promptly after the calibration constant is defined. Moreover, 1 cm dose equivalent in connection with an individual is the dose equivalent at the depth of 1 cm from an entrance plane on the principal axis, when ICRU slab is irradiated at right angles to a principal plane with the photon of the plane parallel beam of the single direction.

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JIS Z – Guide to the rounding of numbers (FOREIGN STANDARD)

Figure 2 In the case of a collimate y -ray 2 In the case of a non-collimate y -ray, it shall be as specified in figure 3. Practical y -ray irradiation equipment is assigned a value by the ICRU-sphere dose equivalent rateand it mis set a practical ICRU’sphere dose-equivalent rate standard. The revision introduces iis air kerma standard and concerns the fundamental matters of the system of calibration. Patents, Trademarks, Copyright Law: Remarks 1 Calibration of a specified secondary standard instrument and a reference meter including practical reference standard is outside of the scope of this Standard.


Irradiation shall be performed using the practical y -ray source and irradiation conditions which were specified beforehand. The coefficient of variation shall be 0.

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It shall also be based on the practical dose-equivalent rate standard whose value is decided by the practical dose -equivalent rate standard, as well as the calibration for confirmation. Peer comments on this answer and responses from the answerer agree.

The ionization chamber shall have the wall thickness or entrance window thickness and meet the performance indicated in table 1, depending on each energy range used. Figure 4 In the case of X-ray irradiation 11 Radiation quality of X-rays 11,1 Measuring method of the 1st and 2nd half-value layers Under a certain tube voltage, tube current, the characteristic filter including the air spaceand added-filter conditions, a dose rate over the thickness of the filter for half- value -layer measurement of a certain single substance shall be measured.

One is that a meter to be calibrated and a reference instrument specified in ISO “3 jus simultaneously irradiated. Figure 3 In the case of a non-collimate y -ray b X-ray irradiation jjs shall be as specified in figure 4. The radiation source and irradiation conditions are compared before change and after change.

The calibration constant N of a dosenieter to be calibrated shall be obtained by the following formula. It is referred to as “calibration tables”. Radiation characteristics and production methods ISO 3- X and gamma reference radiation for calibrating dose meters and doseraie meters and for determining their response as jiis function of photon energy — Part 3: Calibration of a dose-equivalent practical meter shall be based on the dose-equivalent rate standard which is obtained by multiplying the practical air kerma rate standard by the dose-equivalent conversion factor.


The calibration constant of a meter to be calibrated shall be obtained by the following formula. You will also have access to many other tools and opportunities designed for those who have language-related jobs or are passionate about them. Full text of ” JIS Z Moreover, the same radiation source shall be used through the usable years of a meter. When they are not single energy, it shall be effective energy. The following substances shall be used as a filter, respectively- aluminum for the effective energy range of 40 keV, copper for the range of 30 keV to keV, and tin for the range 0.

Remarks 1 Calibration of a specified secondary standard instrument and a reference meter including a working reference standard is outside the scope of this Standard. Calibration of the personal dosemeter installed in the phantom hereafter referred to as “phantom installed personal dosemeters’O shall be performed by one method of the following- 1 In the field where a reference meter and irradiation equipment determines the practical air kerma rate standard, which is multiplied by the dose -equivalent conversion factor in order to set the ICRU slab dose-equivalent rate standard, a substitution method or an inverse square laW’ shall be used.

The cahbration constant of a meter to be calibrated shall be obtained by the following formula.