Definitions
A singular documented physical or functional need that is necessary to assure the safe and effective operation of the Plant.
What is a Requirement?
RM activity involves breaking down higher-tier requirements—such as stakeholder requirements or ROCS—into more refined, purpose-specific requirements.
What is Requirement Decomposition?
This requirement describes how two components within a single system must work together to ensure redundancy under specific flow conditions. It includes target throughput rates.
What is a System Performance Requirement?
The system shall have a design life of 60 years."
What is "Yes" - This requirement is clear, specific, measurable, and follows the guidance for life expectancy requirements.
This design control document helps ensure that parameter data used to define requirements is traceable, version-controlled, and governed properly.
What is NAT-6169?
Software system used to manages the creation, storage, and control of requirements electronically.
What is Atom?
The only requirement type(s) that can have interfaces.
What is a system requirement?
This requirement applies to all instrumentation cables and mandates that cable jackets be flame-retardant. It is pulled into multiple systems from a DDC.
What is a Common Design Constraint Requirement?
"The crane system shall move equipment within the building with a lifting capacity of 2000 kg."
What is "Yes" - This requirement is clear, specific, measurable, and verifiable.
This is the structured list that ties system names, IDs, and requirement allocations together for the sake of verification and traceability.
What is the Master Systems List (MSL)?
Process that ensures each requirement has been met by the design.
What is a Requirements Verification and Validation?
A system requirement is REFINED from a plant requirement, would this hierarchy be correct or incorrect?
This would be an incorrect relationship between requirements.
This requirement applies to a heat exchanger and defines acceptable flow rate, inlet temperature, and pressure drop across the equipment.
What is an Equipment Performance Requirement?
“The system shall comply with ASME Section III."
What is "No" - Requirements should not directly reference codes and standards without decomposing them into specific requirements.
These types of documents, such as DBDs and Specs, are where requirements “live” in quality and form the core of design basis information.
What are Design Basis Documents?
The activity that involves assigning the requirement to plant, system, equipment/component level design.
What is Requirement Allocation?
What happens if I delete a requirement?
What is "it depends"?
This requirement states that the reactor building must be designed with stainless steel support structures, due to corrosion exposure from nearby systems.
What is a Plant Design Constraint Requirement?
What is wrong with this requirement?
"The system shall be updated by the vendor every six months to improve reliability."
What is "No" - This requirement uses passive voice, vague terminology ("improve reliability"), and doesn't specify who is responsible.
This procedure provides expectations for Design Control Packages (DCPs) and how requirements in documents are baselined and maintained in quality records.
What is NAT-1975?
The act of establishing the relationships amongst requirements based on requirement types, document relationships.
What is Requirement Traceability?
This tailored approach to requirements management adjusts the level of analysis, documentation, and rigor based on factors such as safety significance, engineering discipline, and project-specific needs.
What is a Graded Approach to Requirements Management?
This requirement outlines the interaction between the steam generation system and the power conversion system, describing both the steam conditions and the mechanical interface between them.
What is a System Interface Requirement?
[What is missing from this requirement?]
“The crane system shall move required equipment in the building as described by the following parameters:
What is "The Parameter numbers" (Parameters are linked, however they are missing the numbers in the description)
This document helps define which requirement documents are part of the baseline, supporting, or simply quality-related—informing the RM team of their significance.
What is NAT-1974?