Document: NUREG-0800
Document ID: 988a555f-fdfa-4452-829d-c06654bfbba5
Document Type: srp
Title: Initial Plant Test Program - Design Certification and New License Applicants
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0706/ML070660618.pdf
Revision Date: 2023-06
Chapter: 14
Section ID: 14.2
CFR Part: 
CFR Title: 

Content:
e showing the Class 1E distribution system should show this feature if it exists. Then any special features to deal with this feature should be covered. P. Post TMI requirements - e.g., power to power operated relief valve (PORV) block valve, Pressurizer heaters, etc. 2. ITAAC ENTRIES (for the above equipment) The standard ITAAC entries for electrical systems in Appendix D to this SRP section should be used to the extent possible. Normally, all design commitments in Tier 1 should be verified by a specific ITAAC entry, unless there are specific reasons why this is not necessary. A. Basic Configuration ITAAC (See also Appendix D). General functional arrangement - this is captured in the basic configuration standard ITAAC, but the level of detail is determined by the design description and what is shown on any figure(s). Qualification of components - qualification of SSCs for seismic and harsh environment is covered by the basic configuration ITAAC. Tier 1 should only deal with electrical equipment in harsh environments. Electrical equipment in a "mild" environment should be treated in Tier 2 only. An exception is made for I&C state-of-the-art digital equipment in "other than harsh" environment, which I&C ITAAC should cover. Since there is some of this type equipment which may be utilized in the electrical distribution systems, the I&C ITAAC should cover this potential. The basis for this exception is that recent I&C equipment in "mild" environments has some operating experience that shows sensitivity particularly to temperature, and new digital equipment may have even more sensitivity. 14.3-52 March 2007 B. Independence. include separation, interties (if any), identification (e.g., color coding), location, non-Class 1E loads on 1E buses. This may be covered by the divisional power supply and physical separation standard ITAAC in Appendix D to this SRP section. C. Capacity and Capability. Sizing of sources and distribution equipment, Loading - analyses to demonstrate