10 CFR 50.46a - Acceptance criteria for reactor coolant system venting systems.

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§ 50.46a Acceptance criteria for reactor coolant system venting systems.
Each nuclear power reactor must be provided with high point vents for the reactor coolant system, for the reactor vessel head, and for other systems required to maintain adequate core cooling if the accumulation of noncondensible gases would cause the loss of function of these systems. High point vents are not required for the tubes in U-tube steam generators. Acceptable venting systems must meet the following criteria:
(a) The high point vents must be remotely operated from the control room.
(b) The design of the vents and associated controls, instruments and power sources must conform to appendix A and appendix B of this part.
(c) The vent system must be designed to ensure that:
(1) The vents will perform their safety functions; and
(2) There would not be inadvertent or irreversible actuation of a vent.
[68 FR 54142, Sept. 16, 2003]

Title 10 published on 2014-01-01

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  • 2014-12-11; vol. 79 # 238 - Thursday, December 11, 2014
    1. 79 FR 73461 - Approval of American Society of Mechanical Engineers' Code Cases; Technical Corrections
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      NUCLEAR REGULATORY COMMISSION
      Final rule.
      This rule is effective December 11, 2014. The incorporation by reference of the publications listed in this rule was previously approved by the Director of the Federal Register.
      10 CFR Part 50

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Title 10 published on 2014-01-01

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 10 CFR 50 after this date.

  • 2015-01-12; vol. 80 # 7 - Monday, January 12, 2015
    1. 80 FR 1476 - Improved Identification Techniques Against Alkali-Silica Reaction Concrete Degradation at Nuclear Power Plants
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      Petition for rulemaking; notice of docketing, and request for comment.
      Submit comments by March 30, 2015. Comments received after this date will be considered if it is practical to do so, but the NRC is able to assure consideration only for comments received on or before this date.
      10 CFR Part 50