ML20204J039: Difference between revisions

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=Text=
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CONNECTICUT YANKEE ATOMIC POWER CO.
(
CY                                PROCEDURE COVER SHEET AUG 231998 PROCEDURE NUMBER        TITLE                                                          REY.NO.
EOP 3.1-28                            Turbine Overspeed                              4 Major cacuca          P. Rainha DATE 6/23/88        l DEPT. Ops          l TECHNICAL REVIEW                                                  l OPERATIONS            - -
I            HEALTH PHYSICS                                ,
i ENGINEERING                                          CHEMISTRY SECURITY
[ REACTOR ENGR.
MAINTENANCE                                          STORES
[ INST. & CONTROL                                        CA
[ ADMIN.                                                  RECORDS                                        ,
U(                      )                                (P20c WTOE )                    /2 J      G
((                      ]                                [                ]
DEPARTMENT HEAD REVIEW I
COMPLETE / B:ENNIAL REVIEW 7 hYES          NO      PORC REVIEW REQUIRED?                  hYES      NO l MAJOR REVISON?                  hYES      NO      ENVIROfAENTAL IMPACT?                        YES[NO A CHANGE TO INTENT 7              YES    NO      WRITTEN SAFETY EVALUATON ATTACHED?          YES[ N/A SAFETY EVALUATCN REQUIRED?        YEShNO          UNREVIEVED SAFETY OUEST10N?            UYEShNO APPROVAL DATE              SU        ')
l DEPA T 1%NT%EAD
              \  \ %                        1'Ut'8T                  _
p,h/w                              I DATE        PROCEDURE EF F ECTIVE DATE        REQUIRES UCE.NSED OPERATOR          l
[ PORC M EEThiG NO.
              -(                        b        h          k              YES % NO [
I 017                                                                            ACP 1.2 6.5. Attachment 8.1 9010240525 801007 ADOCK 050          3 gDR
 
AUG 231988 EOP 3.128 Rev.4 Major
(  Connecticut Yankee Emergency Operating Procedure EOP 3.1-28 TURBINE OVERSPEED 1.0  DISCUSSION 1.1    Turbine overspeed can cause turbine damage if it is not reduced. It can result from any of the followmg causes:
1.1.1 Malfunction of turbine control valves during turbine startup.
1.1.2 A loss of generator load.
1.1.3 Failure of turbine stop and control valves to close following a turbine trip.
1.1.4 Malfunction oflow pressure steam dump system following a turbine trip.
2.0  SYMIrTOMS 2.1    "Turbine Overspeed Trip" alarm.
2.2    Increasing indication on turbine speed recorder.
2.3    Increasing indication on turbine speed indicator.
2.4    Loss of load trip from 86P and / or 86BU relays.
2.5    No closed indication on turbine stop and control valves following a turbine trip.
3.0  AUTOMATIC ACTIONS 3.1    Turbine trip.
3.2    Reactor trip if reactor powa level is above P . 7 (10 %).
3.3    Low Pressure Steam Dump actuation.
                                                                        ~
l Page 1 of 3 l-
 
AUG 2 31988 EOP 3.1-28          :
Rev.4 Major        !
(        4.0 IMMEDIATE ACTIONS                                                                                                                  !
1H2 AcnONEXPECTED RESPONSE                                            RESPONSE NOT OBTAINED                                        (
l 4.1  Perform immediate actions in E-0,                                                                                            i REACTOR TRIP OR SAFETY INECTION                                                                                                                    ;
l 5.0 SUBSEQUEST ACTIONS                                                                                                                :
5.1  Check turbine speed indicator-                                  Perform the following:                                      l LESS ' IRAN 2300 RPM                                                                                                        i
: a. Close all four main steamline trip valves,
: b. Open pressure controlled steam dump valves to depressurize main steamlines.
5.2  Check turbine stop and control                                  Perform the following:
valves CLOSED
: a. Place turbine stop valve control switches in the trip position.
: b. Run test motors on any open control valve (s) to the closed position.
5.3  Check turbine speed -                                          E turbine speed is approaching 2300 RPM, STABLE DE DECREASING                                            'I1EN close all four main steamline trip valves ASI2 open pressure controlled steam dump valves to depressusize main steamlines.
5.4  RE'IURNIQ procedure and step in effect END 1
Page 2 of 3
 
AUG 2 31988 EOP 3.138        !
Rev.4 Major      j i
(                6.0    FOOTNOTES
{
None                                                                                                                                    i I
7.0   
 
==SUMMARY==
OF CHANGES Step #                    Change                                                                                    Reason 4.0    Format changed                                                        To be consistent with ERP format.
5.0    Format changed                                                        To be consistent with ERP format.
I, t
Page 3 of 3}}

Latest revision as of 12:41, 30 December 2020

Rev 4 to Emergency Operating Procedure EOP 3.1-28, Turbine Overspeed
ML20204J039
Person / Time
Site: Millstone, Haddam Neck, 05000000
Issue date: 08/23/1988
From:
CONNECTICUT YANKEE ATOMIC POWER CO.
To:
Shared Package
ML20204H467 List: ... further results
References
EOP-3.1-28, NUDOCS 8810240525
Download: ML20204J039 (4)
v • d • e


Text

'

CONNECTICUT YANKEE ATOMIC POWER CO.

(

CY PROCEDURE COVER SHEET AUG 231998 PROCEDURE NUMBER TITLE REY.NO.

EOP 3.1-28 Turbine Overspeed 4 Major cacuca P. Rainha DATE 6/23/88 l DEPT. Ops l TECHNICAL REVIEW l OPERATIONS - -

I HEALTH PHYSICS ,

i ENGINEERING CHEMISTRY SECURITY

[ REACTOR ENGR.

MAINTENANCE STORES

[ INST. & CONTROL CA

[ ADMIN. RECORDS ,

U( ) (P20c WTOE ) /2 J G

(( ] [ ]

DEPARTMENT HEAD REVIEW I

COMPLETE / B:ENNIAL REVIEW 7 hYES NO PORC REVIEW REQUIRED? hYES NO l MAJOR REVISON? hYES NO ENVIROfAENTAL IMPACT? YES[NO A CHANGE TO INTENT 7 YES NO WRITTEN SAFETY EVALUATON ATTACHED? YES[ N/A SAFETY EVALUATCN REQUIRED? YEShNO UNREVIEVED SAFETY OUEST10N? UYEShNO APPROVAL DATE SU ')

l DEPA T 1%NT%EAD

\ \ % 1'Ut'8T _

p,h/w I DATE PROCEDURE EF F ECTIVE DATE REQUIRES UCE.NSED OPERATOR l

[ PORC M EEThiG NO.

-( b h k YES % NO [

I 017 ACP 1.2 6.5. Attachment 8.1 9010240525 801007 ADOCK 050 3 gDR

AUG 231988 EOP 3.128 Rev.4 Major

( Connecticut Yankee Emergency Operating Procedure EOP 3.1-28 TURBINE OVERSPEED 1.0 DISCUSSION 1.1 Turbine overspeed can cause turbine damage if it is not reduced. It can result from any of the followmg causes:

1.1.1 Malfunction of turbine control valves during turbine startup.

1.1.2 A loss of generator load.

1.1.3 Failure of turbine stop and control valves to close following a turbine trip.

1.1.4 Malfunction oflow pressure steam dump system following a turbine trip.

2.0 SYMIrTOMS 2.1 "Turbine Overspeed Trip" alarm.

2.2 Increasing indication on turbine speed recorder.

2.3 Increasing indication on turbine speed indicator.

2.4 Loss of load trip from 86P and / or 86BU relays.

2.5 No closed indication on turbine stop and control valves following a turbine trip.

3.0 AUTOMATIC ACTIONS 3.1 Turbine trip.

3.2 Reactor trip if reactor powa level is above P . 7 (10 %).

3.3 Low Pressure Steam Dump actuation.

~

l Page 1 of 3 l-

AUG 2 31988 EOP 3.1-28  :

Rev.4 Major  !

( 4.0 IMMEDIATE ACTIONS  !

1H2 AcnONEXPECTED RESPONSE RESPONSE NOT OBTAINED (

l 4.1 Perform immediate actions in E-0, i REACTOR TRIP OR SAFETY INECTION  ;

l 5.0 SUBSEQUEST ACTIONS  :

5.1 Check turbine speed indicator- Perform the following: l LESS ' IRAN 2300 RPM i

a. Close all four main steamline trip valves,
b. Open pressure controlled steam dump valves to depressurize main steamlines.

5.2 Check turbine stop and control Perform the following:

valves CLOSED

a. Place turbine stop valve control switches in the trip position.
b. Run test motors on any open control valve (s) to the closed position.

5.3 Check turbine speed - E turbine speed is approaching 2300 RPM, STABLE DE DECREASING 'I1EN close all four main steamline trip valves ASI2 open pressure controlled steam dump valves to depressusize main steamlines.

5.4 RE'IURNIQ procedure and step in effect END 1

Page 2 of 3

AUG 2 31988 EOP 3.138  !

Rev.4 Major j i

( 6.0 FOOTNOTES

{

None i I

7.0

SUMMARY

OF CHANGES Step # Change Reason 4.0 Format changed To be consistent with ERP format.

5.0 Format changed To be consistent with ERP format.

I, t

Page 3 of 3

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