ASME RAM-1:2013 pdf free download

ASME RAM-1:2013 pdf free download.Reliability, Availability, and Maintainability of Equipment and Systems in Power Plants.
A RAM program is a structured methodology to identify and deliver the reIiahilit availability, and maintainability (RAM) requirements of a power plant in the most cost-effective manner. This document is an assurance standard to govern the master planning process for a power plant RAM program. It is intended to provide a methodology to develop and implement a comprehensive availability assurance program for the design, construction, and operation phases of the RAM project. This Standard is applicable to both new and existing facilities.
2 SCOPE
This Standard provides the requirements to establish a RAM program for any power-generation facility. The program process includes
(a) establishment of RAM goals
(b) requirements for design, construction and commissioning, and operations
This Standard identifies the required RAM program elements and reponsihilities.
3 PURPOSE
The purpose of this Standard is to meet the owner’s power plant RAM performance goals. This Standard identifies program requirements that support effective reliability processes in design, construction and commissioning, and operations. It requires a risk-based approach to design and provides requirements to optimize performance effectively throughout the life cycle of the power plant.
4 DEFINITIONS
isis of design (BOO): the underlying assumptions and requirements that support the physical plant design.
criticalite: the relative importance of equipment attributes that range from physical materials and hardware to design functions.
reliability, availability, and maintainability (RAM):
(a) the process of addressing all the associated concepts of reliability, availability, and maintainability and integrating them to meet the owner’s performance objectives
preventive maintenance: predictive, periodic, and planned maintenance actions, including calibrations and operational tests, taken prior to structure, system, or component failure, to identify degradation and maintain the structure, system, or component within the design operating conditions by controlling degradation or failure. These shall comprise, at a minimum, the following:
(a) condition monitoring
(b) condition assessments (predictive activities)
(c) failure finding tests
(d) hard time (time-based) maintenance, including overhauls
(e) condition-based response (corrective action)
probabilistic risk assessment (PRA): a quantitative method of assessing damage frequency or other risk measure, e.g., risk of failure.
RAM program: the underlying assumptions and requirements of a RAM performance enhancement program, based on plant design, which, if implemented, should ensure program success.
redundancy: a method of design where a duplicate structure, system, or component is provided such that if one fails, the redundant structure, system, or component will operate in its place such that plant performance is not impacted. Diversity, a similar concept, achieves the same outcome by an alternative technical means.
reliability: the probability of an item to perform a required function under stated conditions for a specified period of time, or the ability of an item to perform a required function under given conditions for a given time interval. Reliability can be further divided into mission reliability and logistics reliability.
indirect (or degraded, multiple path), and falls into safety, production, and cost consequences for direct risk threats.
system: a group of structures, components, instruments, and controls that together perform a specific function(s) within a plant. A system should be capable of being defined by specific boundaries. The system definitions improve the manageability of a RAM program. A system may be open or closed with regard to the fluids that it contains (e.g., air, steam water, oil, or gas such as H2). Examples include condensate system, feedwater system, service air system, boiler system, turbine systems, control system, high-voltage system, etc. The system definition can be either broad or very detailed, as best serves the plant and RAM program. Systems will often be defined by piping and instrumentation drawings (P& ID). Systems must he defined for this Standard. Systems are typically identified by the plant’s designer as a part of the design process.
total ownership cost (TOC): an attempt to capture the true cost of design, development, ownership, and support of a power plant. At the individual program level, TOC is synonymous with the life-cycle cost of the system. To the extent that new systems can be designed to be more reliable (fewer failures) and more maintainable (fewer resources needed) with no unacceptable increase in the cost of the system or spares, the TOC for these systems will be lower.