NASA Procedures and Guidelines
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NPR 8705.5A Eff. Date: June 07, 2010 Cancellation Date: December 09, 2022	Technical Probabilistic Risk Assessment (PRA) Procedures for Safety and Mission Success for NASA Programs and Projects (w/Change 2)
| TOC | ChangeHistory | Preface | Chapter1 | Chapter2 | Chapter3 | Chapter4 | Chapter5 | AppendixA | AppendixB | AppendixC | ALL |

Preface

P.1 Purpose

This NASA Procedural Requirements (NPR) provides basic requirements for performing a probabilistic risk assessment (PRA) for NASA programs and projects. It addresses technical, mission success, safety, and health risk. It does not address programmatic risk involving consideration of cost and schedule.

P.2 Applicability

a. This NPR is applicable to NASA Headquarters and NASA Centers, including Component Facilities and Technical and Service Support Centers. This language applies to the Jet Propulsion Laboratory, a Federally Funded Research and Development Center (FFRDC), recipients of grants, cooperative agreements, or other agreements only to the extent specified or referenced in the applicable contracts, grants, or agreements.

b. This NPR applies specifically to programs and projects that provide aerospace products or capabilities; i.e., space and aeronautics systems and launch, flight, and control systems that support the mission. The importance and scope (potential effects on public and worker health and safety, strategic significance, and cost) of the project/program being assessed is used to identify the extent of the PRA application.

c. This NPR does not apply to other types of programs and projects such as research and technology development and related test facilities, ground test infrastructure, training, or education; however, the PRA concepts and practices described within this document can be beneficial to other projects.

d. The applicability of this NPR to programs/projects already in progress depends on its criticality and life-cycle phase. Decisions concerning applicability to programs/projects in progress will be made on a case-by-case basis involving program/project manager recommendations to the governing program management council (PMC).

e. In this NPR, "shall" denotes a mandatory requirement, "may" or "can" denotes a discretionary privilege or permission, "should" denotes a good practice, and "will" denotes an expected outcome.

P.3 Authority

a. NPD 1000.5, Policy for NASA Acquisition.

b. NPD 7120.4, Program/Project Management.

c. NPD 8700.1, NASA Policy for Safety and Mission Success.

d. NPR 7120.5, NASA Space Flight Program and Project Management Requirements.

e. NPR 8000.4, Agency Risk Management Procedural Requirements.

f. NPR 8715.3, NASA General Safety Program Requirements.

P.4 Applicable Documents and Forms

a. Code of Federal Regulations, Title 22 Foreign Relations, Part 120-124 International Traffic In Arms Regulations.

b. NPD 1440.6, NASA Records Management.

c. NPD 8720.1, NASA Reliability and Maintainability (R&M) Program Policy.

d. NPR 1441.1, NASA Records Retention Schedules.

e. NPR 8705.6, Safety and Mission Assurance Audits, Reviews, and Assessments.

P.5 Measurement/Verification

Compliance with the requirements contained within this directive is continuously monitored by the Centers and by the Safety and Mission Assurance (SMA) Technical Authority. Compliance may also be verified as part of selected life-cycle reviews and by assessments, reviews, and audits of the requirements and processes defined within this directive.

P.6 Cancellation

NPR 8705.5, Technical Probabilistic Risk Assessment (PRA) Procedures for Safety and Mission Success for NASA Programs and Projects, dated July 12, 2004.

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