ISO 7004:2002

Name: ISO 7004:2002 — Photography — Industrial radiographic films — Determination of ISO speed, ISO average gradient and ISO gradients G2 and G4 when exposed to X- and gamma-radiation
SKU: ISO 7004:2002
Price: 41400 RUB
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Photography — Industrial radiographic films — Determination of ISO speed, ISO average gradient and ISO gradients G2 and G4 when exposed to X- and gamma-radiation

Название (английский):

ISO 7004:2002

Photography — Industrial radiographic films — Determination of ISO speed, ISO average gradient and ISO gradients G2 and G4 when exposed to X- and gamma-radiation

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 23
Дата публикации:: 3 октября 2002 г.
Издание:: ISO IS 7004 edition 2 version 1
ICS:: 37.040.25

Тип поставки:

Full version41 400 ₽Read online 24h1 200 ₽Read online 72h1 800 ₽

Язык документа:

ruen

Срок поставки:4 раб. дн. (перевод)

Цена:41 400 ₽

Описание (английский):

ISO 7004:2002 specifies methods for determining sensitometric curve shape, ISO speed, ISO average gradient and ISO gradients G2 and G4 for industrial radiographic systems consisting of film and film processing when exposed directly to X-rays and gamma-rays. The measurement of characteristics of film systems used in industrial radiography with fluorescent intensifying screens is not specified in this International Standard.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 7004:2002 - "Photography - Industrial radiographic films - Determination of ISO speed, ISO average gradient and ISO gradients G2 and G4 when exposed to X- and gamma-radiation" defines standardized test methods for measuring the sensitometric behavior of industrial radiographic film systems (film + processing) exposed directly to X‑ and γ‑radiation. The standard covers how to obtain a sensitometric curve and derive ISO speed, ISO average gradient, and point gradients G2 and G4. It does not apply to film systems used with fluorescent intensifying screens.

Key topics and requirements

Scope and definitions - film system, system type, radiation quality, net and minimum density, gradients, etc.

Sampling and storage - evaluate representative batches and store samples per manufacturer recommendations to reflect typical consumer use.

Handling - films must be handled in complete darkness (no safelight exposure) during exposure and processing.

Environmental conditions - samples exposed at 23 °C ± 5 °C and 50% ± 20% relative humidity.

Exposure and radiation quality - four representative sources (two X‑ray, two γ‑ray) are specified to reflect practical use. X‑ray generator requirements (per ISO 4037‑1) include constant-voltage operation and high-voltage stability within ±1%.

Filtration and tube specs - example X‑ray filtration requirements: low‑potential source with total filtration equivalent to 2.0 mm ± 0.1 mm Cu and half‑value layer adjustment (approx. 120 kV); high‑potential source with 8.00 mm ± 0.05 mm Cu equivalent (approx. 220 kV). (See standard for full radiation-quality details.)

Processing and densitometry - film development must be defined when reporting results; density measurements follow ISO density standards (ISO 5‑2, ISO 5‑3).

Evaluation and calculations - procedures to derive ISO speed, ISO average gradient, point gradients (G2, G4), uncertainty assessment, product classification, and marking/labeling requirements.

Informative annexes - units of measured energy, scattered radiation measurement, ionization chamber calibration, and radiation quality codes.

Applications and users

ISO 7004:2002 is intended for practical use in:

Radiographic film manufacturers reporting standardized film characteristics (ISO speed, contrast metrics).

Non‑destructive testing (NDT) laboratories validating film performance for industrial radiography.

Quality assurance and procurement teams specifying film systems for X‑ray and gamma radiography.

Calibration and test laboratories performing sensitometric evaluations and comparative studies.

Standards committees and regulatory bodies aligning national test methods with international practice.

When publishing ISO speed or gradient values, users must specify the radiation quality and film processing used, since results depend on both.

Related standards

ISO 4037‑1: X and gamma reference radiation (radiation characteristics and production)

ISO 5579: Radiographic examination - basic rules

ISO 5‑2 / ISO 5‑3: Density measurements (geometric and spectral conditions)

Keywords: ISO 7004:2002, industrial radiographic films, ISO speed, ISO average gradient, G2 G4 gradients, X‑ray radiography, gamma‑ray radiography, sensitometric curve, film processing, NDT.

ISO 7004:2002

Abstract

Похожие стандарты

Overview

Key topics and requirements

Applications and users

Related standards

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