Document: NUREG-0800
Document ID: 21b37b7c-b45c-4247-b4a5-c2f28df75be4
Document Type: srp
Title: INSTRUMENTATION AND CONTROLS (Tier 1)
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070663.pdf
Revision Date: 2023-06
Chapter: 14
Section ID: 14.3.5
CFR Part: 
CFR Title: 

Content:
1 and as detailed in the BTP on Software Reviews, BTP ICSB-14. Inspection should be the method for verifying the commitment and the acceptance criteria for each commitment should closely parallel the attributes listed in BTP ICSB-14. The acceptance criteria specified should be adequate to demonstrate that the software development activities committed to for each phase have been completed, and that these activities have produced the software attributes described in the BTP on Software Reviews, BTP ICSB- 14. The software development process outlined in this SRP section is such that as each phase is completed, more detail is added to the subsequent phases. For example, in the planning phase, a V&V plan is developed which commits the organization to a comprehensive software testing program. Then, during the design phase of the life cycle, detailed inspection and test plans are developed, including procedures and acceptance criteria. The detailed plans and procedures describe Tier 2 or Tier 2* attributes that represent commitments to be met. The inspections, tests, and the acceptance procedures which go with them should be adequate to assure that, if the tests are performed and the acceptance criteria are met, the system will perform according to its design (§52.47(a)(1)(vi) and §52.79(c)). The BTP on Software Reviews, BTP ICSB-14, describes software characteristics that should be demonstrated by the ITAAC or supporting Tier 2 verification activities. Tier 2* Information The material in DCD Tier 2 Chapter 7 provides design information and defines design processes that are acceptable for use in meeting the acceptance criteria in Tier 1. However, Tier 2 information may be changed by a COL applicant or licensee referencing the certified design in accordance with a "50.59-like" process that is specified in the design certification rule for the design. The staff bases its safety determinations on the design processes specified in SSAR. Therefore, for the evolutionary