Document: 10 CFR Part 50
Document ID: d0ed3b22-f5a8-42b0-8cac-2e9eadacfdb8
Document Type: cfr
Title: Contents of applications; technical information.
Source: 10 CFR Part 50
Source URL: https://www.ecfr.gov/current/title-10/part-50/section-50.34
Revision Date: 
Chapter: 
Section ID: 50.34
CFR Part: 50
CFR Title: 10

Content:
eatures. ( C ) Equipment necessary for achieving and maintaining safe shutdown of the plant and maintaining containment integrity will perform its safety function during and after being exposed to the environmental conditions attendant with the release of hydrogen generated by the equivalent of a 100% fuel-clad metal water reaction including the environmental conditions created by activation of the hydrogen control system. ( D ) If the method chosen for hydrogen control is a post-accident inerting system, inadvertent actuation of the system can be safely accommodated during plant operation. ( x ) Provide a test program and associated model development and conduct tests to qualify reactor coolant system relief and safety valves and, for PWR's, PORV block valves, for all fluid conditions expected under operating conditions, transients and accidents. Consideration of anticipated transients without scram (ATWS) conditions shall be included in the test program. Actual testing under ATWS conditions need not be carried out until subsequent phases of the test program are developed. (II.D.1) ( xi ) Provide direct indication of relief and safety valve position (open or closed) in the control room. (II.D.3) ( xii ) Provide automatic and manual auxiliary feedwater (AFW) system initiation, and provide auxiliary feedwater system flow indication in the control room. (Applicable to PWR's only) (II.E.1.2) ( xiii ) Provide pressurizer heater power supply and associated motive and control power interfaces sufficient to establish and maintain natural circulation in hot standby conditions with only onsite power available. (Applicable to PWR's only) (II.E.3.1) ( xiv ) Provide containment isolation systems that: (II.E.4.2) ( A ) Ensure all non-essential systems are isolated automatically by the containment isolation system, ( B ) For each non-essential penetration (except instrument lines) have two isolation barriers in series, ( C ) Do not result in reopening of the containment isolation