40 CFR 61.242-6 - Standards: Open-ended valves or lines.

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§ 61.242-6 Standards: Open-ended valves or lines.
(a)
(1) Each open-ended valve or line shall be equipped with a cap, blind flange, plug, or a second valve, except as provided in § 61.242-1(c).
(2) The cap, blind flange, plug, or second valve shall seal the open end at all times except during operations requiring process fluid flow through the open-ended valve or line.
(b) Each open-ended valve or line equipped with a second valve shall be operated in a manner such that the valve on the process fluid end is closed before the second valve is closed.
(c) When a double block and bleed system is being used, the bleed valve or line may remain open during operations that require venting the line between the block valves but shall comply with paragraph (a) at all other times.
(d) Open-ended valves or lines in an emergency shutdown system which are designed to open automatically in the event of a process upset are exempt from the requirements of paragraphs (a), (b) and (c) of this section.
(e) Open-ended valves or lines containing materials which would autocatalytically polymerize or would present an explosion, serious overpressure, or other safety hazard if capped or equipped with a double block and bleed system as specified in paragraphs (a) through (c) of this section are exempt from the requirements of paragraphs (a) through (c) of this section.
[49 FR 23513, June 6, 1984, as amended at 65 FR 78282, Dec. 14, 2000]

Title 40 published on 2013-07-01

The following are only the Rules published in the Federal Register after the published date of Title 40.

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  • 2014-02-27; vol. 79 # 39 - Thursday, February 27, 2014
    1. 79 FR 11228 - Revisions to Test Methods and Testing Regulations
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      ENVIRONMENTAL PROTECTION AGENCY
      Final rule.
      This final rule is effective on February 27, 2014. The incorporation by reference materials listed in the rule are approved by the Director of the Federal Register as of February 27, 2014.
      40 CFR Parts 51, 60, 61, and 63

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United States Code
U.S. Code: Title 42 - THE PUBLIC HEALTH AND WELFARE

Title 40 published on 2013-07-01

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 40 CFR 61 after this date.

  • 2014-05-02; vol. 79 # 85 - Friday, May 2, 2014
    1. 79 FR 25388 - Revisions to National Emission Standards for Radon Emissions From Operating Mill Tailings
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      ENVIRONMENTAL PROTECTION AGENCY
      Proposed rule.
      Comments must be received on or before July 31, 2014.
      40 CFR Part 61