Purging Compound ASTM Standards

Introduction Purging, as implied in this manual, is the process of a flammable gas being either removed from or introduced into a system. When a flammable gas is purged into or out of service by air, the interface between the gas and the air may create a flammable mixture inside the...

When the combustible gas content of a pipe, tank, or other enclosure is directly replaced by air, a mixture of gas and air within the flammable limits forms and remains during part of the operation. A similar mixture within flammable limits occurs when air is directly replaced by gas. Carefully...

Application The purpose of this test method is to evaluate and qualify purge solvents used in purging liquid organic coatings from paint application equipment.

This publication describes a recommended procedure for nitrogen purging of containers to ensure the safest possible work environment during the nitrogen application process. It also describes protecting the container from hazards associated with exposure to liquid nitrogen.

This guide covers methods for purging wells used for ground water quality investigations and monitoring programs. These methods could be used for other types of programs but are not addressed in this guide. This guide applies only to wells sampled at the wellhead. This standard describes...

Wells used in groundwater quality investigations or monitoring programs are generally purged prior to sampling (Note 1). Purging is done to minimize the bias associated with stagnant water in the well, which generally does not accurately reflect ambient groundwater chemistry (Note 2)....

4.1 Purging is done for a variety of reasons and the purging method may depend on the hydrogeologic setting, condition of the well, or the contaminants of interest and well production rates. well hydrological conditions, condition of the well, or the contaminants of interest, and well...

4.1 Wells used in groundwater quality investigations or monitoring programs are generally purged prior to sampling (Note 1). Purging is done to minimize the bias associated with stagnant water in the well, which generally does not accurately reflect ambient groundwater chemistry (Note...

This guide describes the characteristics and operating principles of purging and sampling devices available for use in ground-water monitoring wells and provides criteria for selecting appropriate devices for specific applications. The selected device(s) should be capable of purging...

This specification covers the requirements for a fluid for use in purging and preserving fuel tanks of jet aircraft before hangaring of aircraft for scheduled maintenance.

1.1 This standard provides guidance and information on passive sampling techniques for collecting groundwater from monitoring wells. Passive groundwater samplers are able to acquire a sample from the screen interval in a well, without the active transport associated with a pump or purge...

This guide describes the characteristics and operating principles of purging and sampling devices available for use in groundwater monitoring wells and provides criteria for selecting appropriate devices for specific applications. The selected device(s) should be capable of purging...

4.1 General-In the past ten (plus) years, the Interstate Technology Regulatory Council (ITRC) has provided several technical and regulatory documents on the use of passive groundwater sampling methods (1, 4-6). Collectively, these documents have provided information and references on the technical...

Appropriate purging and sampling equipment must be used to ensure that samples collected from monitoring wells represent the groundwater chemistry of the desired water bearing zone. This guide is intended to be a common reference for purging and sampling devices. It can be applied to...

1.1 This guide describes the characteristics and operating principles of purging and sampling devices available for use in ground-water monitoring wells and provides criteria for selecting appropriate devices for specific applications. The selected device(s) should be capable of...

5.1 Method Considerations-The objective of most groundwater sampling programs is to obtain samples that are similar in composition to that of the formation water near the well screen. The low-flow purging and sampling method uses the stabilization of indicator parameters to determine when...

5.1 Appropriate purging and sampling equipment must be used to make sure that samples collected from monitoring wells represent the groundwater chemistry of the desired water bearing zone. 5.2 This guide is intended to be a common reference for purging and sampling devices. It can be...