Document: NUREG-0800
Document ID: b91646e8-0b07-4d85-a5e4-783b27cdcd88
Document Type: srp
Title: SEISMIC AND DYNAMIC QUALIFICATION OF MECHANICAL AND
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070286.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.10
CFR Part: 
CFR Title: 

Content:
on. Examples of mechanical equipment included in these systems are pumps, valves, 7 fans, valve operators, snubbers, battery and instrument racks, control consoles, cabinets, and 8 panels. Examples of electrical equipment are valve operator motors, solenoid valves, pressure switches, level transmitters, electrical penetrations, and pump and fan motors. The EMEB has the responsibility, in accordance with SRP Section 3.9.2, for defining the seismic and dynamic input motion for all pipe mounted equipment. In addition, the EMEB has the primary responsibility, in accordance with SRP Section 3.2.2, for defining the systems that perform the functions delineated in the previous paragraph.9 The HICB, in fulfilling its secondary review responsibility, verifies that all instrumentation and controls for the equipment described in the previous paragraphs, as well as for Category 1 accident monitoring instrumentation as defined in Regulatory Guide 1.97, are included in the seismic and dynamic qualification program and that the performance aspects of these items are included in the seismic and dynamic qualification testing.10 At the construction permit (CP) or design certification stage, the staff review covers the 11 following specific areas: 1. The criteria for qualification, such as the deciding factors for choosing between tests or analyses, the considerations in defining the seismic and other relevant dynamic load input motions, and the demonstration of adequacy of the qualification program. 2. The methods and procedures including tests and analyses, used to assure ensure12 structural integrity and the operability of mechanical and electrical equipment in the event of a safe shutdown earthquake (SSE), after a number of postulated occurrences of the operating basis earthquake (OBE), and in combination with other relevant dynamic and static loads. 3. The methods and procedures of analysis or testing of the supports for mechanical and electrical equipment, and the procedures