ASTM C1920-21

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: C1920 −21
Standard Practice for
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Cleaning of Vitrified Clay Sanitary Sewer Pipelines
This standard is issued under the fixed designation C1920; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 2.2 Federal Standards:
DOT CFR 49 Parts 106-107, 171-180, and 390-
1.1 This practice covers the personnel requirements, opera-
397 HAZMAT Transportation Regulations for Domestic
tor training, operating procedures, and recommended equip-
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Shipping and Transporting of Hazardous Materials
ment performance/design for the proper operation of pressure
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OSHA Public Law 91-596 Section 5
water-jet cleaning and cutting equipment as normally used by
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OSHA 29 USC 654 Duties of Employers and Employees
municipalities and contractors concerned with operations,
29 CFR 1910.120 Hazardous waste operations and emer-
maintenanceandcleaningworkofvitrifiedclaymainlinesewer
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gency response
pipe.
US EPA Optimizing Operation, Maintenance and Rehabili-
1.2 The term “high-pressure water jetting” covers all water
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tation of Sanitary Sewer Collection Systems
jetting, including the use of jets and hydromechanical tooling
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Vitrified Clay Pipe Engineering Manual, 2017
at pressures above 2000 psig (0.69 MPa).
Vitrified Clay Pipe Operations & Maintenance Handbook,
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1.3 This practice covers the “high-pressure water jetting” of
2020
vitrified clay pipe and should not be applied to other pipe and
pipe lining materials without evaluating the recommended
3. Terminology
cleaning procedure from the manufacturer to avoid damage.
3.1 Definitions:
1.4 Units—The values stated in inch-pound units are to be
3.1.1 high velocity sewer cleaner, n—these portable units
regarded as the standard. The values given in parentheses are
have the capability of generating variable water pressures
mathematical conversions to SI units that are provided for
through a hose up to 3500 psi (24 MPa) and variable flow rates
information only and are not considered standard.
of 50-125 gal per min (gpm) (180-473 L per min).
1.5 This standard does not purport to address all of the
3.1.2 boom, n—telescopic vacuum tube mounted on a sewer
safety concerns, if any, associated with its use. It is the
cleaning truck chassis.
responsibility of the user of this standard to establish appro-
3.1.3 bucket, n—a special device designed to be pulled
priate safety, health, and environmental practices and deter-
along a sewer for the removal of debris from the sewer.
mine the applicability of regulatory limitations prior to use.
1.6 This international standard was developed in accor-
3.1.3.1 Discussion—The bucket has one end open with the
dance with internationally recognized principles on standard- opposite end having a set of jaws. When pulled from the jaw
ization established in the Decision on Principles for the
end, the jaws are automatically opened. When pulled from the
Development of International Standards, Guides and Recom- other end, the jaws close. In operation, the bucket is pulled into
mendations issued by the World Trade Organization Technical
the debris from the jaw end and to a point where some of the
Barriers to Trade (TBT) Committee. debris has been forced into the bucket. The bucket is then
pulled out of the sewer from the other end, causing the jaws to
2. Referenced Documents
close and retain the debris. Once removed from the manhole,
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the bucket is emptied and the process repeated.
2.1 CDC Standard:
Guidance for Reducing Health Risks to Workers Handling
Human Waste or Sewage
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Available from U.S. Government Publishing Office (GPO), 732 N. Capitol St.,
NW, Washington, DC 20401, http://www.gpo.gov.
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This test method is under the jurisdiction ofASTM Committee C04 on Vitrified Available from Occupational Safety and Health Administration (OSHA), 200
Clay Pipe and is the direct responsibility of Subcommittee C04.20 on Methods of Constitution Ave., NW, Washington, DC 20210, http://www.osha.gov.
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Test and Specifications. AvailablefromUnitedStatesEnvironmentalProtectionAgency(EPA),William
Current edition approved Dec. 1, 2021. Published December 2021. DOI: Jefferson Clinton Bldg., 1200 Pennsylvania Ave., NW, Washington, DC 20460,
10.1520/C1920-21. http://www.epa.gov.
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Available from Centers for Disease Control and Prevention (CDC), 1600 Available from National Clay Pipe Institute, 850 N. Wisconsin St., Ste 102,
Clifton Rd., Atlanta, GA 30329-4027, http://www.cdc.gov. Elkhorn, WI 53121, https://www.ncpi.or
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