ML20054J990
| ML20054J990 | |
| Person / Time | |
|---|---|
| Site: | Grand Gulf  |
| Issue date: | 03/17/1982 |
| From: | MISSISSIPPI POWER & LIGHT CO. |
| To: | |
| Shared Package | |
| ML20054J949 | List:
|
| References | |
| 05-1-02-III-2, 5-1-2-III-2, NUDOCS 8206300273 | |
| Download: ML20054J990 (4) | |
Text
PLANT OPERATIONS MANUAL Volume 05 05-1-02-III-2 Section 02 Revision:
10 Date: 3-17-82 0FF NORMAL EVENT PROCEDURE i
LOSS OF ONE OR BOTil RPS BUSES SAFETY RELATED Prepared: _
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Reviewed:
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Nuclear PlanFQuality Superintendent V Technical Review Reviewed:
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Ope'ratiog Superintendent Approved:
Assistant Plant Manager
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List of Ef fective Pages:
Page:
Revis ion:
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, GRAND GULF NUCI. EAR STATION OFF-NORMAL EVENT PROCEDURE '
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Title:
Loss of one or Both RPS INo.-
05-1-02-111-2 l Rev is ion:.10 iPage:
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1.0 PURPOSE / DISCUSSION 1.1 This procedure provides instruction to the operator in the event one or both RPS Buses are deenergized.
1.2 This procedure may interface with the Emergency Plan and the Emergency Procedures.
1.3 The raactor protection buses each have two power supplies. The preferred sources of power are the two motor generators. The alternate source for RPS Bus "A" is MCC 15B42 and for RPS Bus "B" is MCC 16B42.
The loss of one RPS Bus will cause half of the coincidence circuit to de-energize. The loss of both RPS Buses will result in a direct reactor scram with isolat ions.
2.0 SYMPTOMS 2.1 RPS A and C Trip Unit 00 file or power fail annunciators.
2.2 RPS B and D Trip Unit 00 file or power fail annunciators.
2.3 DIV 1 and 3 white scram solenoid indicating lights out.....
2.4 DIV 2 and 4 white scram solenoid indicating lights out.
2.5 Reactor scram trip annunciator.
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4.6 Manual scram trip annunciator.
2.7 All rods insert.to 00 (Both RPS buses).
2.8 Generator "A" Notmal feed available light out on panel lH13-P610.
I 2.9 Generator "B" Normtl feed available light out on panel IH13-P610.
2.10 All reactor protection system trip annunciators (Both RPS buses).
2.!! All radiation monitor system trip annunciators (Both RPS buses).
3.0 AUTOMATIC ACTIONS 3.1 All control rods fully insert (Both RPS buses) t 3.2 Group I, III, VI, VIII and X Isolat ions actuate.
(Both RPS buses) l t
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.CRAND GULF NUCLEAR STATION OFF-NOR(tAL EVENT PRO Q0UR6 s
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.i ITitle: Loss of One or Both RPS INo.:
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3.3 Loss of RPS bus A:
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3.3.3 B21-F019, F068A-D, and F113 close.
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i 3.3.5 At least one valve in each line penet' gat ing the Auxtliaryj Eldg.,
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Logic for combustible gas contro(and containne, nt coil,ing tripp.
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3.4 Loss of RPS bus B:
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3.4.2 B33-F019 closes.
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3.4.3 E12-F049, F060A and B, F009, F037B,y and.FS533 'el,osi.'
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3.4.4 G33-F040, F001, F028, and F053 close.V.,
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i,s 3.4.5 At le as t one valve in each line penetrat ing the Auxiliary B1'dg.,
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- , AN 3.4.7 Drywell and suppression pool recorchrs shift co ' fast. speed.l v.i
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3.4.8 Logic for combustible gas control and conesinment c'ooling trip'cf. \\
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- I 4.0 IMMEDIATE OPERATOR ACTIONS
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h. tor 4.1 If a scram occtirred, refer to ONEP 05-1-02-I-1,4
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3 4.2 Refer to ONEP 05-1-02-111-5, Automat ic Isolat ibns..
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N isolation occurred, refer to EP-1, Leveh. s Co nt rol'.
1 4.3 If a Group I 4.4 For a loss of one RPS Bus perform the following steps. d t
4.4.1 On panel 11113-P610 ident ify the RPS Bus that is, de e'nergized. by either Cen "A" Normal feed available light out or 'Gdn "B". Normal N
N feed available light out.
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, GRAND GULF NUCLEAR STATION OFF-NORMAL EVENT PtWCEDURE
' lTitle: Loss of One or Both RPS lNo. :
05-1-02-IIL-2 laevis ion: 10 IPage:
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4.4.3 If the "A" RPS bus is de-energized and the "A" alternate power is ava ilab le, place the MG SET A TRANSFER switch on panel 1H13-P610.
to alternate "A".
4.4.4 If the "B" RPS Das is de-energized and the "B" alternate power is available, place the MG SET B TRANSFER switch on panel 1H13-P610 to alternate "B".
F 4.5. Reset the' half-scram using 'either HS-M601 A and C or HS-M601-B and D on i*-
panel 1H13-P680 by placing the switches momentarily to reset.
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f 5.0 SUBSEQUENT OPERATOR ACTIONS 5.1 Determine the cause for the loss of the RPS M.G.
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5.2 Nhen the cause of the trip has been resolved, re-start the RPS MG set in accordance with SOI 04-1-01-C71-1.
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