Skip to Main Page ContentSkip to SearchSkip to Site Map NavigationSkip to Footer Links

        - Home

        - FAQ
        - Glossary
        - Facility Locator
        - What's New
        - Site Help
        - Index A-Z
        - Contact Us
        - Email Updates
        -    Listen to page

Report a Safety Concern

      - Nuclear Reactors  - Power Reactors
- Research & Test Reactors
- Operating Reactors
- Operator Licensing
- New Reactors
- Operator Licensing for New Reactors
- Research Activities
- Nuclear Reactor Quick Links
 
      - Nuclear Materials  - Special Nuclear Material
- Source Material
- Byproduct Material
- Med, Ind, & Academic Uses
- Radium
- Uranium Recovery
- Fuel Cycle Facilities
- Materials Transportation
- Research Activities
- Nuclear Materials Quick Links
 
      - Radioactive Waste  - Decommissioning of Nuclear Facilities
- Low-Level Waste
- Waste Incidental to Reprocessing
- High-Level Waste
- Uranium Mill Tailings
- Low-Level Waste Disposal
- High-Level Waste Disposal
- Storage of Spent Nuclear Fuel
- Transportation of Spent Nuclear Fuel
- Research Activities
- Radioactive Waste Quick Links
 
      - Nuclear Security  - Domestic Safeguards
- Information Security
- Radioactive Material Security
- Required Reporting for Clearance Holders
- Insider Threat Program for Licensees
- Criminal History & Firearms Checks
- Contact Us
 
      - Public Meetings & Involvement  - The NRC Approach to Open Government
- About Meetings Open to the Public
- Conferences & Symposia
- Documents for Comment
- NRC Rules and Petitions
- Facilitating Stakeholder Involvement
- NRC Information Quality Guidelines
- Subscribe to E-mail Updates
- Commission Schedule
- Adjudications (Hearings)
- Public Meeting Schedule
- Adjudicatory Submissions
 
      - NRC Library  - Basic References
- Document Collections
- ADAMS Public Documents
- Public Document Room
- LSN Library
- FOIA & Privacy Act
- Records Management
- Training Courses
- FAQ Index
- Get Copies of Documents
- Withholding of Sensitive Information
- Photos & Video
- Electronic Hearing Docket
 
      - About NRC  - The Commission
- Organization & Functions
- Governing Legislation
- Plans, Budget, & Performance
- Locations
- History
- Values
- Direction-Setting & Policymaking
- Research Activities
- Radiation Protection
- Fire Protection
- Safety Culture
- How We Regulate
- Emergency Preparedness & Response
- Public Affairs
- Congressional Affairs
- Enforcement
- International Programs
- State & Tribal Programs
- Alternative Dispute Resolution Programs
- Privacy Program
- Civil Rights
- Contact Us
- Career Opportunities
- Contracting Opportunities
- Small Businesses
- Grant Opportunities
 

Print

HomeNRC LibraryDocument CollectionsGeneric CommunicationsGeneric Letters1977

#  Reliability of Standby Diesel Generator (DG) Units (Generic Letter 77-07)

```


                                                               GL 77-07

                                UNITED STATES
                         NUCLEAR REGULATORY COMMISSION
                            WASHINGTON, D.C. 20555

                                                  December 15, 1977

ALL POWER REACTOR LICENSEES


The demonstrated reliability of standby diesel generator (DG) units in
operating nuclear power plants has been less than anticipated.  The NRC has
concluded that a systematic review and analysis of operating problems
associated with diesel generator units is necessary to establish what
practical measures may be taken to enhance the reliability of these units.
The NRC, with the assistance of the University of Dayton, has initiated such a
study.  It is our intent that this study will provide practical results that
will prove useful to each nuclear utility, therefore, each operating reactor
licensee is requested to respond to the enclosed questionnaire.

An analysis will be performed on the information received and the results of
this analysis, along with recommendations that may lead to improved
reliability, will be transmitted to licensees and applicants for their use.
We believe that this information will assist in identifying as well as
avoiding or minimizing operating experiences encountered by others.  We view
this effort as one of mutual interest.

We ask that a single completed copy of the enclosed questionnaire be returned
to the Director of Nuclear Reactor Regulation, U.S. Nuclear Regulatory
Commission, Washington, D.C. 20555, by January 20, 1978.  Please include on a
separate sheet the name, address and phone number of the person(s) at the
reactor site responsible for completing the questionnaire and responsible for
responding to any follow-up communications concerning the questionnaire or for
arranging a reactor site visit.

The responses to the majority of the questions can be answered with just a few
words or by checking the appropriate space.  In responding to those questions
which do not apply to a particular installation and/or situation, please
indicate "N/A" for "not applicable".  If the question does apply to a
particular installation or situation but the answer is not known, please
indicate "UN" for "unknown".  For those entries on the questionnaire where the
requested information is not known by January 20, 1978, please provide it in
follow-up correspondence when it becomes available.



7912130830
.

                                    - 2 -

Further, the detailed information obtained in this study will be subject to
disclosure pursuant to the Freedom on Information Act Regulations as
implemented by 10 CFR Part 9 - Public Records.

In the event that any information requested as a part of this study, is
considered by you (or your contractor) to be proprietary, it is necessary that
you make a written application to withhold such information from public
disclosure.  Any such application must be accompanied by an affidavit executed
by the owner of the information, which identifies the document or part sought
to be withheld, and which contains a statement of reasons which address with
specificity the items which will be considered by the Commission as listed in
subparagraph (b)(4) of Section 2.790 of NRC's "Rules and Practice", Part 2,
Title 10, Code of Federal Regulations.  The information sought to be withheld
shall be incorporated as far as possible into a separate part of the
affidavit.

In the event any portion of the questionnaire needs clarification, please
contact F. Clemenson at (301)492-8077.

This request for generic information was approved by GAO under a blanket
clearance number B-180225 (R0072); this clearance expires July 31, 1980.

                                  Sincerely,


                                  Karl R. Goller, Assistant Director
                                    for Operating Reactors
                                  Division of Operating Reactors

Enclosure:
Questionnaire
```

*Page Last Reviewed/Updated Friday, May 22, 2015*

#### Home

            - News Releases
            - Event Reports
            - ADAMS
            - Open Gov
            - Digital Government
            - The Student Corner
            - Photos & Video
            - For Developers

#### About Us

            - Strategic Plan
            - Budget & Performance
            - Agency Financial Report
            - License Fees
            - History of the NRC
            - Career Opportunities
            - NRC Ethics
            - Agency Status
            - Contact Us

#### Popular Documents

            - Info Digest
            - Fact Sheets & Brochures
            - Forms
            - Electronic Submittals Application
            - Adjudicatory Submissions
            - NRC Reports – NUREG
            - NRC Regulations – 10-CFR
            - Inspection Reports
            - Plain Writing
            - Enforcement Actions
            - RULEMAKING

#### Stay Connected

            - Blog
            - Facebook
            - Twitter
            - YouTube
            - Flickr
            - GovDelivery
            - RSS

Regulations.govUSA.govRecoveryFOIANo Fear EEOInspector General ProgramSite MapAccessibilityPrivacy PolicySite DisclaimerFor Employees