ML050960503
| ML050960503 | |
| Person / Time | |
|---|---|
| Site: | Nuclear Energy Institute |
| Issue date: | 04/07/2005 |
| From: | Joseph Colaccino NRC/NRR/DRIP/RNRP |
| To: | Nuclear Energy Institute |
| Colaccino,Joseph,NRR/DRIP/RNRP,415-2753 | |
| References | |
| NEI 04-01 | |
| Download: ML050960503 (4) | |
Text
Guidance for COL Applicants on Design Implementation of Digital Instrumentation and Control Systems in Nuclear Power Plants
,*pIR Regret 00 NEI 04-01 Public Meeting April 7, 2005
Implementation of DACIITAAC To confirm that the as-built computer-based plant instrumentation and control systems (I&C systems) conforms to the certified design, the design acceptance criteria (DAC) is verified as part of the l&C system ITAAC.
The COL applicant is to develop the procedures and test programs necessary to demonstrate that the requirements for the ITAAC for DAC are met during the digital system design implementation.
The ITAAC will be performed by the COL applicant and reviewed by the NRC throughout the system lifecycle including implementation, installation and operation.
The applicant and NRC will establish agreed upon review points in the system design development process. See Figures land 2 for system and software lifecycle stages.
Through the system design activities, system requirements are allocated to components and give rise to hardware and software requirements. Software development activities proceed in parallel with hardware development and become integrated with hardware activities during the system validation stage. Software is validated against software requirements, integrated with hardware, and the complete system is validated against system requirements.
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Figure 2: Software Life Cycle Lie Cyceb Activity Groups Pbannng Activites Requirements Actities Design Actities Implementation Activibes Integration Activities Valdtidon Activities Instation Activities Operatons &
Maintenance Acbvities if Software Management Men Software Development Men Software GA Plan integration Plan Instloation plan Mantenance plan Training plan Operations Men Software Safety Plan Software V&V Men Software CM PMn Requirements Specifications Design Specificatons Hardware &
Software Architecture Code Listings System Build Documentation Operations Manuals Instalaton Configuration Tables Maintenance Manuals Tranfing Manuals
,Q:J Requirements Safety Analysis V&V Requirements Analysis Report CM Requirements Analysis Report Design Safety Analysis V&V Design Analysis Report CM Design Report Code Safety Analysis V&V Implementation Analysis & Test Report CM Implementation Report Integration Safety Analysis V&V Integration Analysis & Test Report CM Integration Report ValWatfon Safety Analysis V&V Vaidation &
Test Report CM Vaidation Report Instabaton Safety Analysis V&V Vaidatfon &
Test Report CM Instalaton Report Change Safety Analysis V&V Change Report CM Change Report Note: A separate document is not required for each topic identified, however, project documentation should encompass al the topics.
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