ML20205A928

Rev 0 to Emergency Operating Procedure EOP 3506, Loss of All Charging Pumps

ML20205A928
Person / Time
Site:	Millstone, Haddam Neck, 05000000
Issue date:	10/09/1985
From:	CONNECTICUT YANKEE ATOMIC POWER CO.
To:
Shared Package
ML20204H467	List: A07413, Forwards Specific Emergency Operating Procedures for Use During Incident Response Ctr Activation ML20204H704 ML20204H734 ML20204H868 ML20204H928 ML20204H963 ML20204J027 ML20204J039 ML20204J092 ML20204J109 ML20204J115 ML20204J120 ML20204J128 ML20204J133 ML20204J139 ML20204J147 ML20204J497 ML20204J543 ML20204J565 ML20204J627 ML20204J633 ML20204J638 ML20204J642 ML20204J659 ML20204J669 ML20204J685 ML20204J707 ML20204J733 ML20204J739 ML20204J746 ML20204J767 ML20204J781 ML20204J786 ML20204J814 ML20204J824 ML20204J849 ML20204J853 ML20204J865 ML20204J878 ML20204J902 ML20204J914 ML20204J920 ML20204J939 ML20204J947 ML20204J954 ML20204J958 ML20204J965 ML20204J975 ML20204J982 ML20204J994 ... further results
References
EOP-3506, NUDOCS 8810260138
Download: ML20205A928 (5)

Text

e E. J. Hrot i 2-1-85

, Fora Approved by Station Suparintendent Effective Dato

. STATION PROCEDURE COVER SHEET l7 ,)

C/ A. IDENTIFICATION Number E0P 3506 Rev. O Title LOSS OF ALL CHARGINC PUMPS Prepared By EDGAR FETTERMAN B. REVIEW I have reviewed the above procedure and have found it to be satisf actory.

TITLE SIGNATURE DATE DEPARTMENT HEAD C. UNREVIEWE0 SAFETY QUESTION EVALUATION DOCUMENTATION REQUIRED:

(Significant change in procedure method or scope YES [ ] NO [Q as described in FSAR)

(If yes, document in PORC/SORC meeting minutes)

ENVIRONMENTAL IMPACT (Adverse environmental impact) YES [ ] NO [\1 (If yes, document in PORC/SORC meeting minutes)

D. INTEGRATED SAFETY REVIEW REQUIRED (Affects response of Safety Systems, performance YES [ ] NO N) of safety-related control systems or performance of control systems which may indirectly affect safety system response.)

(If yes, document in PORC/50RC meeting minutes. )

E. PROCEDURE REQUIRE $ SORC REVIEW YES % NO [ ]

f. ( P0RC/50RC APPROVAL

_a; %

POR USDRC Meeting Number 3".S5'/3 G. APPROVAL AND IMPLEMENTATION The attached procedure is hereby approved, and effective on the date below:

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Q l cm/9 St fon/ Service / Unit Superintendent. Effec'ti % Date SF 301 8810260138 08100723 p,y, 7 ADOCK 050 Page 1 of 1 gDR

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E0P 3506 Page 1 l . Rev. O i a

! LOSS OF ALL CHARGING PUMPS

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LOSS OF ALL CHARGING PI'MPS E0P 3506 Page 2 Rev, O A. PURPOSE .

This procedure provides actions to be taken in the event of a failure of all charging pumps.

B. ENTRY CONDITIONS

1) Charging pump Auto Trip /overcurrent MB3A 5-9

2) Charging pump flow HI/LO MB3A 4-9

3) Pressurizer level deviation MB4A 4-1

4) Pressurizer level lo heaters off MB4A 5-1 and letdown secure n

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LOSS OF ALL CHARGING PUMPS E0P 3506 Page 3 Rev. O (A

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STEP ACTION / EXPECTED RESPONSE RESPONSE NOT QeTAINED CAUTION RPCCW pumps must be running to provide seal cooling.  ;

1 Verify at least one charging START a charging pump. If pump is running, unable to START a charging pump prior to losing pressurizer level below 5%,

THEN go to Step 3. t 2 Go to Step 3.

a. Restore charging flow through normal charging, seal injection or cold leg injection

b. Return to procedure and step in effect O' 3 Verify letdown isolation. Isolate letdown.

4 Verify the Reactor is tripped. TRIP the Reactor and THEN t go to E0P 35 E-0 REACTOR OR l SAFETY INJECTION 5 Initiate RCS Cooldown Manually OR locally dump to 1 530*F steam to cooldown to i 530*F  !

6 Verify RCS Pressure Depressurize RCS to i 2460 (

i 1450 psia psia 7 START a Safety injection Manually open valves. I pump and verify flow 8 Establish Max Excess Letdown (

Flow i

9 PZR level increase to 60%

10 Verify S/D margin If 5/D margin not adequate then reduce PZR level to 20% [

and then allow PZR level to  ;

increase to 60%.

IF S/0 margin still not {

O adequate THEN consider Reactor Vessel Head Letdown to PRT.

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LOSS OF ALL CHARGING PUMPS E0P 3506 Page 4 Rev. 0 r- STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED 11 Raise PZR pressure to control $1 flow and PZR level 12 START a charging pump Go to Step 10 13 Go to E0P 35 ES-0.1 Step 4 REAC10R TRIP .

RESPONSE

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