ISO 7503-2-2016 PDF

Full title and description

Measurement of radioactivity — Measurement and evaluation of surface contamination — Part 2: Test method using wipe-test samples. This part of ISO 7503 specifies an indirect (wipe) sampling method and subsequent measurement procedure for evaluating removable radioactive contamination expressed as activity per unit area on well‑defined solid surfaces (equipment, containers, buildings, land, etc.).

Abstract

ISO 7503-2:2016 defines how to collect wipe-test samples from surfaces and how to measure and evaluate removable surface contamination in terms of activity per unit area. It is intended for laboratory and field monitoring, site remediation, compliance checks and transport/clearance controls; it does not apply to contamination of skin, clothing or loose material such as gravel. The document complements ISO 7503-1 (direct surface measurement) and ISO 7503-3 (instrument calibration).

General information

• Status: Published (International Standard).
• Publication date: January 2016 (Edition 2, published January 2016).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 13.280 (Radiation protection).
• Edition / version: Edition 2 (2016).
• Number of pages: 11 pages (ISO printed/pdf edition).

Scope

Specifies an indirect method for evaluation of removable radioactive contamination on well‑defined solid surfaces by collecting wipe samples which are then measured to determine activity per unit area. Applicable for equipment, facility surfaces, containers of radioactive materials, sealed sources, buildings and land. Not intended for skin, clothing or loose materials. The standard is intended to support laboratory and installation control, remediation and monitoring activities and to assist authorities in transport and clearance decisions.

Key topics and requirements

• Wipe sampling procedures: selection of wipe material, wet vs. dry wiping, sample area and handling to obtain representative removable activity.
• Definition and consideration of wiping efficiency (the fraction of removable activity recovered by the wipe) and practical approaches to estimate it for different surface/material combinations.
• Measurement techniques for wipes (appropriate detectors and sample preparation) and conversion of instrument response to activity per unit area.
• Requirements for calibration, quality assurance and traceability of measurement results (links to calibration and instrument standards).
• Applications and limitations: intended uses (monitoring, remediation, compliance) and explicit exclusions (skin, clothing, loose material).

Typical use and users

Used by radiation protection laboratories, site remediation teams, nuclear industry operational and maintenance staff, regulatory bodies and transport/clearance authorities for routine monitoring, decontamination verification, release criteria checks and investigative surveys. Also used by instrument calibration laboratories to validate wipe-measurement procedures in conjunction with calibration standards.

Related standards

ISO 7503-1 (direct evaluation of surface contamination) and ISO 7503-3 (calibration of instruments for surface contamination) are the immediately related parts of the series. ISO 8769 and normative references such as IEC 60325 (contamination meters), ISO/IEC 17025 (laboratory competence) and ISO 11929 (decision thresholds and detection limits) are commonly referenced alongside ISO 7503-2.

Keywords

surface contamination, wipe test, removable contamination, radioactivity measurement, radiation protection, wipe sampling, activity per unit area, calibration, monitoring, decontamination.

FAQ

Q: What is this standard?

A: ISO 7503-2:2016 is an international standard that specifies a wipe-test based method for measuring removable radioactive surface contamination and expressing results as activity per unit area.

Q: What does it cover?

A: It covers procedures for collecting wipe samples from well‑defined solid surfaces, measurement and evaluation of the removable activity recovered, considerations of wiping efficiency, and requirements for converting measurements into activity per unit area for monitoring, remediation and compliance purposes. It explicitly excludes skin, clothing and loose material.

Q: Who typically uses it?

A: Radiation protection laboratories, nuclear facility operators, decontamination and remediation contractors, regulatory authorities, transport/clearance organizations and instrument calibration labs.

Q: Is it current or superseded?

A: The current ISO edition for this part is ISO 7503-2:2016 (Edition 2), which replaced the 1988 edition. ISO records indicate the standard is subject to periodic review; consult the official ISO catalogue or your national standards body for the very latest status if you need guaranteed up‑to‑the‑minute confirmation.

Q: Is it part of a series?

A: Yes — ISO 7503 is a multi‑part series addressing surface contamination measurement. Part 1 covers direct evaluation methods, Part 2 covers wipe (indirect) methods, and Part 3 addresses calibration of instruments used for surface contamination measurements.

Q: What are the key keywords?

A: Surface contamination, wipe test, removable contamination, activity per unit area, radiation protection, wipe-sampling, calibration, monitoring, decontamination.