Introduction - std10650007

DOE-STD-1065-94

1. INTRODUCTION

1.1 Purpose

This guide is intended to assist facility maintenance operations in the review

of existing and in developing new PMT guidelines to be performed following

maintenance, which proves that the structures, systems or components (SSC) are

operable as designed and confirms the following: (1) the original deficiency has

been corrected, (2) no new deficiencies have been created, and (3) the equipment

is ready to return to service. A PMT should be performed after all corrective

maintenance and after some preventive maintenance activities. The test

performed should be commensurate with the maintenance work performed and

the importance of the SSC to facility safety and reliability. In some cases, this

may only require checkout and verification, other cases may require a

Documented PMT. It is expected that each DOE facility may use different

approaches or methods than those defined in this guide. The specific guidelines

that follow reflect generally accepted industry practices. Therefore, deviation

from any particular guideline would not, in itself, indicate a problem. If

substantive differences exist between the intent of the Guideline and actual

practice, management should evaluate current practice to determine the need to

include/exclude proposed features. A change to maintenance practice would be

appropriate if a performance weakness was determined to exist. Development,

documentation, and implementation of other features which further enhance

these guidelines for specific applications, is encouraged.

Additional information pertinent to the implementation of this guideline may

be found in DOE-STD-1068-93 "Guide to Good Practices for Maintenance History

at DOE Nuclear Facilities."

Appendix D is provided for use by facility trainers who provide training

regarding this element.

1.2 Background

The information in this guide was developed from commercial and DOE

sources. Each facility should select those details that are applicable, add any

unlisted knowledge or experience that are applicable, and develop and implement

facility-specific PMT guidelines. Facilities that have existing documented PMT

should review this guide to identify details that may enhance their existing

guidelines.