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:
reatment, e.g., RCP seal water cooling. C. Style Guidelines for Design Descriptions and Figures i. New terminology should be avoided, standard terminology should be used (i.e., use terms in common use in the CFR or Reg Guides vice redefining them). ii. Pressures should include units to indicate if the parameter is absolute, gage, or differential. iii. "LOCA signal" should be used vice specific input signals such as "High drywell" or "Low water level" because control systems generally processes the specific input signals and generate a LOCA signal that actuates the component. iv. In general, the term "ASSOCIATED" should be avoided because this term has particular meaning regarding electrical circuits and its use may lead to confusion. v. Numbers should be expressed in metric units with English units in parentheses. vi. The design description should be consistent in the use of present or future tense. 14.3-30 March 2007 vii. "Division" should be used instead of train, loop, or subsystem (unless it is a subsystem). viii. "Tier 1" and "Tier 2" should not be used in the design description or ITAAC. ix. Systems should be described as "safety-related" and "nonsafety-related," not "essential" and "nonessential." x. The correct system name should be used consistently. II. Inspections, Tests, Analyses and Acceptance Criteria (ITAAC) 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. Standard ITAAC Entries. See Appendix D to this SRP section. B. System Specific ITAAC Entries. i. Operational/functional Aspects of the System. The design description captures the system components that are involved in accomplishing the direct safety function. Typically, the system ITAAC specify functional tests, or tests and analyses, to verify the direct safety functions for the various system operating modes. ii. Critical Assumptions from Transient and Accident Analyses. The critical assumptions