ML17339A570
| ML17339A570 | |
| Person / Time | |
|---|---|
| Site: | Millstone, Saint Lucie, Turkey Point  |
| Issue date: | 06/07/1978 |
| From: | Reid R Office of Nuclear Reactor Regulation |
| To: | Robert E. Uhrig FLORIDA POWER & LIGHT CO. |
| Shared Package | |
| ML17207A819 | List:
|
| References | |
| NUDOCS 8002150489 | |
| Download: ML17339A570 (3) | |
Text
Reference 12 Dockets Nos.:
50-250 50-251 and 50-335 I
II UNIQEO STATGS NUCLEAR REGULATORY COMMISSION WASHINGTON, O. C. 20555 June 7, 1978 FlpQ~J
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'=.~'.s. Pg Florida Power 5 Light Company ATTN:
Dr. Robert E.
Uhr ig Vice President, Advanced Systems II Technology P. 0.
Box 529100 Miami,'lorida 33152 Gentlemen:
You have submitted several res'ponses to our requests for information relating to the Hay 16, 1977 power system disturbance.
Based on our revie:I and evaluation of your responses, we request that you make a
commitment to implement and submit your proposed
- methods, procedures, and schedules to implement the enclosed Statement of Staff Position as soon as practicable.
Sincerely,
Enclosure:
Statements of Staff Position o ert W. Reid, Chief Operating Reactors Branch 84 Division of Operating Reactors cc w/enclosure:
See next page 8002X50 08t gI.
STATEMENTS OF STAFF POSITION Based on the evaluation of the information supplied by FPSL on the Nay 16, 1977 system disturbance, our technical consultants a't ORNL have provided certain recommendations.
Me have evaluated these recommendations and have developed the following staff positions.
He request that the licensee submit its proposed
- methods, procedures, and schedules to implement these positions.
Staff Position No.
1 Under certain well-defined and predefined conditions, a power system shall be declared to be in some class of lert.
For each such class there shall be well defined procedures to mandate or to guide the actions of the operating personnel.
Some of the things which might place a system in an alert condition are:
planned outage of significant components, extended severe weather spells which strain capacity over an exiended area, impend-ing storms, fires, floods, sudden loss of components, or sudden misbe-haviour of state variables for no known reason.
The listing and the definition of the alert status and the prescription of required remedies during any alert condition should be provided by the licensee.
Prior to the planned outage of any major component, a security
'valuation of'he resulting configuration of bounding magnitude shall be performed.
Mhen the security evaluation is performed by steady state (load flow) and transient stability analyses, both single and double contingencies shall be considered in the computations to determine the state of alertness appropriate to the expected system configuration (Position No. 1).
In addition, we request that the licensee describe stdps that have been or will be taken to:
a.
Improve telemetering equipment that transmits current information on the state of all major transmission and generation components to the Control Center and b.
Provide and maintain current daily reports of equipment availability, disabling of major relays, etc.,
in the Control Center.
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