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CFR › Title 46 › Chapter I › Subchapter F › Part 56 › Subpart 56.97 › Section 56.97-25

46 CFR 56.97-25 - Preparation for testing (reproduces 137.2).

There is 1 rule appearing in the Federal Register for 46 CFR 56. Select the tab below to view, or View eCFR (GPOAccess)
§ 56.97-25
Preparation for testing (reproduces 137.2).
(a) Exposure of joints. All joints including welds must be left uninsulated and exposed for examination during the test.
(b) Addition of temporary supports. Piping systems designed for vapor or gas may be provided with additional temporary supports, if necessary, to support the weight of the test liquid.
(c) Restraint or isolation of expansion joints. Expansion joints must be provided with temporary restraint, if required for the additional pressure load under test, or they must be isolated from the test.
(d) Isolation of equipment not subjected to pressure test. Equipment that is not to be subjected to the pressure test must be either disconnected from the piping subassembly or system or isolated by a blank flange or similar means. Valves may be used if the valve with its closure is suitable for the proposed test pressure.
(e) Treatment of flanged joints containing blinds. Flanged joints at which blinds are inserted to blank off other equipment during the test need not be tested.
(f) Precautions against test medium expansion. If a pressure test is to be maintained for a period of time and the test medium in the system is subject to thermal expansion, precautions must be taken to avoid excessive pressure. A small relief valve set to 1 1/3 times the test pressure is recommended during the pressure test.
[CGD 73-254, 40 FR 40167, Sept. 2, 1975]

Title 46 published on 2012-10-01

The following are only the Rules published in the Federal Register after the published date of Title 46.

For a complete list of all Rules, Proposed Rules, and Notices view the Rulemaking tab.

  • 2013-02-27; vol. 78 # 39 - Wednesday, February 27, 2013
    1. 78 FR 13243 - Updates to Standards Incorporated by Reference; Reapproved ASTM Standards; Technical Amendment
      GPO FDSys XML | Text
      DEPARTMENT OF HOMELAND SECURITY, Coast Guard
      Final rule.
      This rule is effective March 29, 2013. The incorporation by reference of certain publications listed in the rule is approved by the Director of the Federal Register on March 29, 2013.
      33 CFR Parts 126, 127, 154, and 155

This is a list of United States Code sections, Statutes at Large, Public Laws, and Presidential Documents, which provide rulemaking authority for this CFR Part.

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United States Code
USC : Title 33 - NAVIGATION AND NAVIGABLE WATERS

§ 1321 - Oil and hazardous substance liability

§ 1509 - Marine environmental protection and navigational safety

USC : Title 43 - PUBLIC LANDS

§ 1333 - Laws and regulations governing lands

Presidential Documents

Executive Order ... 12777

Title 46 published on 2012-10-01

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 46 CFR 56 after this date.

  • 2013-02-27; vol. 78 # 39 - Wednesday, February 27, 2013
    1. 78 FR 13243 - Updates to Standards Incorporated by Reference; Reapproved ASTM Standards; Technical Amendment
      GPO FDSys XML | Text
      DEPARTMENT OF HOMELAND SECURITY, Coast Guard
      Final rule.
      This rule is effective March 29, 2013. The incorporation by reference of certain publications listed in the rule is approved by the Director of the Federal Register on March 29, 2013.
      33 CFR Parts 126, 127, 154, and 155