• There are no items in your cart
We noticed you’re not on the correct regional site. Switch to our AMERICAS site for the best experience.
Dismiss alert

ASTM D 4787 : 1993 : R1999

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by
superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Standard Practice for Continuity Verification of Liquid or Sheet Linings Applied to Concrete Substrates
Available format(s)

Hardcopy , PDF

Superseded date

11-11-2014

Language(s)

English

Published date

01-01-1999

1.1 This practice covers procedures that may be used to allow the detection of discontinuities in nonconductive linings applied to concrete substrates.

1.2 Discontinuities may include pinholes, internal voids, holidays, cracks, and conductive inclusions.

1.3 This practice describes detection of discontinuities utilizing a low voltage wet sponge holiday detector and a high voltage pulsating or continuous dc spark tester. Linings with thickness in excess of 20 mils must be tested utilizing high voltage spark testing equipment.

Note-For further information on discontinuity testing refer to NACE Standard RP0188-88 or Practice D5162.

1.4 This practice describes procedures both with and without the use of a conductive underlayment.

1.5 The values stated in the inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.

1.6 This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For a specific hazard statement, see Section 7.

Committee
D 01
DocumentType
Standard Practice
Pages
4
PublisherName
American Society for Testing and Materials
Status
Superseded
SupersededBy

ASTM D 5162 : 2015 Standard Practice for Discontinuity (Holiday) Testing of Nonconductive Protective Coating on Metallic Substrates
ASTM D 4538 : 2015 Standard Terminology Relating to Protective Coating and Lining Work for Power Generation Facilities
ASTM D 5498 : 2012 : REV A : R2018 Standard Guide for Developing a Training Program for Personnel Performing Coating and Lining Work Inspection for Nuclear Facilities
ASTM D 6237 : 2009 : R2015 Standard Guide for Painting Inspectors (Concrete and Masonry Substrates)

View more information
£55.10
Excluding VAT

Access your standards online with a subscription

Features

  • Simple online access to standards, technical information and regulations.

  • Critical updates of standards and customisable alerts and notifications.

  • Multi-user online standards collection: secure, flexible and cost effective.