ML19008A132
| ML19008A132 | |
| Person / Time | |
|---|---|
| Issue date: | 01/09/2019 |
| From: | John Nakoski NRC/RES/DRA/PRAB |
| To: | Michael Cheok NRC/RES/DRA |
| Suzanne Dennis | |
| Shared Package | |
| ML19008A130 | List: |
| References | |
| Download: ML19008A132 (2) | |
Text
UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 January 9, 2019 MEMORANDUM TO: Michael C. Cheok, Director Division of Risk Analysis Office of Nuclear Regulatory Research FROM: John A. Nakoski, Chief /RA/
Probabilistic Risk Assessment Branch Division of Risk Analysis Office of Nuclear Regulatory Research
SUBJECT:
TRANSMITTAL OF WHITE PAPERS FOR GENERIC PRESSURIZED WATER REACTOR AND BOILING WATER REACTOR PROBABILISTIC RISK ASSESSMENT MODELS The purpose of this memorandum is transmit the white papers for the generic pressurized water reactor (PWR) and the generic boiling water reactor (BWR) probabilistic risk assessment (PRA) models. For this report, the Office of Nuclear Regulatory Research (RES), PRA staff worked closely with staff from the Nuclear Regulatory Authority of Japan and the Pastwowa Agencja Atomistyki (Poland) and incorporated their comments into this report.
The PRA branch is providing the enclosed white paper for the generic PWR and BWR PRA models to mark initial completion of these models, which are being made publically available.
These models do not represent any specific plant, but rather are intended to be representative of a simplified PWR and BWR. These reports discusses the scope of the model, internal initiating events modeled, common-cause failure, and human failure events. The scope of the models do not reflect the level of detail typically included in NRCs plant specific standardized plant assessment risk (SPAR) models.
The reports are simply snapshots of the current status of each model, as they are both intended to provide training and development opportunities for domestic and international stakeholders.
As other initiators, fault trees, and system failures are added, the model will be updated. The BWR model in particular has a very limited set of internal events categories and does not have any other hazard categories represented in the model.
Stakeholders can request access to these models and to SAPHIRE by contacting the RES/DRA/PRAB contact below or Jeff Wood (jeff.wood@nrc.gov) and completing the required non-disclosure agreement.
Enclosures:
As Stated CONTACT: Suzanne Dennis, RES/DRA/PRAB 301-415-7000
SUBJECT:
TRANSMITTAL OF WHITE PAPERS FOR GENERIC PRESSURIZED WATER REACTOR AND BOILING WATER REACTOR PROBABILISTIC RISK ASSESSMENT MODELS
Enclosures:
- 2. Generic BWR SPAR Model White Paper ADAMS Accession No.: ML19008A130 Office RES/DRA/PRAB RES/DRA/PRAB Name S. Dennis J. Nakoski Date 01/ 8 /19 01/ 9 /19