ML19221A446
| ML19221A446 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 04/01/1979 |
| From: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE) |
| To: | |
| References | |
| OSP-790401, NUDOCS 7905230027 | |
| Download: ML19221A446 (12) | |
Text
'
- s. r R01 1 tree Mile Idand Nuclear Station SIDE 1
- f.igure 1001-8 l.
Special Operating Precedure SC P No.
NOTE:
in,t,9ction. a n d gw ld G n e. In A P 1001
.Frc 9 00 P W inc.
mo,t t. foiio. 3 o n.n c o mo; <t i n g i
t n '. f ar rn.
Unit NO.
I C:ts 9
1.
Title b
.' 2 C M1 iMW
- f. U 2.
Purpore ancioo. co,~.. o, :,oe3 f(*O V fro Ce J f C-S?
KN c
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N o Ihe CM&
O S.
3.
Attach,crocedure to this form writtea according to the fo!!cwing format.
j A.
1.imittsen:and Precautions 1.
Nuclear Safety 2.
Environmental Safety
.f.:
4.
Equipment Protection 3.
Personnel Safe ty go B.
Prerequisites C.
Procedure
'l 4.
Generated by MG D ate _ _
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7 t
5.
O ura tic n of S 0 P - sn.n o, no ion., in.n 9o :.,. r,o,n in. et,. cts., c..
. o, in, s c e o, t.> o, t o) n... _
nien.- occ e,.
,;,,1.
.(,
k-SOP will be cancelled by incorporatiorj into exi: ting cr new permanent (a) precedure submitted by
/2.kM /e h (b) SOP is not valid af ter ma in circurn 1.nc
.nica oin,.. ort in se e o..,y c.nc.u,e) 6.
(a) is the procedure Nuclear Safety Related?
If "ye:", complete Nuclear Safety Evaluation. 6. : ei. e o,
)
~.... '/s: O NoO
/
(b) Oces the procedure af fect Envircnmental Prote ion?
if "yes", complete Environmental Evaluatio[csic./,
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(c)
/
.......Ye:O No O or sna r,,n)
Does the procedure affect radiation exposu e to pergonel?
YuO No]
N OT E:
If e n en.
-.,,. "no". t h e cn.ng, rne y b..poro..o my in. Sn., r s w o., wl.o,.
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Jf UNIT #2 OPERATING PROCEDURE
- 4. 04-6.*
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HYDROGEN REC 0".BINER OPERATI.N3 ROCECURE
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1.0 REFERENCES
/
1.1 Drawings Applicable to Operation 1.1.1 Reattor Bldg. Ventilation and Purge, B&R fica Diare - 20;.
'2 Operating Procedures Applicable to Operation.
l.2.1 2102-1, Plant Operating Limits and Precautions.
1.2.2 2102-2 Plant Setpoints.
1.3 Manufacturers Instruction Manuals i
1.3.1 Manual for the' Thermal Hydrogen Recombiner System,
- R File No. 123.
1.4 System Descriptions 1.4.1 Hydrogen Recombiner, Index No. 63.
1.5 Curves, Tables, etc.
1.5.1 Table 4-1, Instrument and Power Cable Connections.
(
l.5.2 Table 4-2, Recombiner Instrument and Control Se:tir.gs.
1.5.3 Table 4-3, Post - LOCA Hydrogen RecoT ina:icn Record.
2.0 LIMITS AND PaECAUTIONS 2.1 Equipment 2.1.1 Assure Bus supply breaker is OFF before connecting t:
p:.:e r j
~
cable for the Recombiner Console.
I 2.1.2 Do not operate the Reccmbiner with RB pressure > 2 2.1.3 Assure. valves AH-V120A(3) and AH-V90A(S) and tha
. iated conta'inment isolation valves are open befcre -
at HS'. to t.r.'!-
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in hydrogen concentration can be cade by periNicaloy
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obse.ving the heater gas tempera:_ra TS1 p'.d tha
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reactic, chamber temperature TIN.
neater cas
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temperatui ' is indicated by rotati.,:, the dial on T53 until the in icator lights char e state.
'inc-approximatc hydrogen concen ration is etermined by tne :quation shown in Table 4-3.
R 6t TS3 to its set pint, 1300 F.
Heater gas perature increases as the hydrogen concent atic 1 d creases, due to dec. asing
/
I heat c tac)non in the rea tion chacber.
.di tional ly,
,;e ri t made of
^
f :bservations and recc-ds should b:
the +emperatures and flow rate i.'dicated cn the ontrol panel.
A suggested opera \\ ns record is ti shown in Table 4-3.
4.2.4 I
the hydrogen recombiner is not functionir.g pro;.qrly anc ob b n s; W,y har > t' cannot be repaired in timely fashien a e packcge i:--
z
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+En e cc t s U t ?.., e..m and %
. ch a r.g e,./ cut i
l per section 4.4 of this procedure.
4.3 Shutdo.in Procedure.
U 4.3.1 Reset TIC 4 to 500 F (260 C).
~
C c
, M'len the temperature indicated on T1C4 is belcw ECO ".i 6 C)
~
proceed to next step.
4.3.2 Turn HS1 to 0FF and Circuit Breakers CBl, CB2, CB3,
~
a r.d CBs to OPEll.
4_.3.. 3 0:en the applicable _480V receptacle supply bre g
-r ~ Tose valves open F in steps 4.1.f and 4.1.l/
-. = = = = * * *
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s.a.c Uisconnect all interconnecting po'.;er and ins;rtman. cables at
-.Tjt
. the recombiner.
Store the cab'.es in the c;ntr:1 c;nscic r;ck.
. y.
Use the cable ties to secure the cables.
/
4.3.6 Replace all receptacle covers on the reccabi 2r package.
4.3.7 Reconnect the heater trickle charge.
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J 4. '--Hydee gem b e m h i rten.xcpMc-ement pro Go u r e.
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4.4.1 Close or check closed AH-V120A & AH-V120B.
-4.4.2 Close or check closed AH-V90A & AH-V90B.
4.4.3 Re move the temporary spool pieces from the inlet cr.d c".let I
line i'
CAUTION.
Extreme radiological car must be taken,. internal I
ntamination could b present in case of a LCCA.
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4.4.4 Disconnect al power and ins umentation cables.
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4.4.5 Remove restraini.. device. and lif t malfunctioning unit off of mounting pad.
f t'OTE:
If it has enn determine:. that only the reccmbiner l
't uni t or the cor.'rol console is malfuncticr.ing ur.ly tha unit would ho'e to be replaced.
3 4.4.6 Install spare recombiner packao' '9:- t'n 2
...s he ;' c /
i mounting pad and secure with the restraining : e v ~. c e s.
1 h.
4.4.7 Befo the Hydrogen Recombiner may b'o put into service,arve'l-1
. lance procedures 2303-Q3, 2302-R13 and 9303-R14 shc ld :e p
current for the replaced unit.
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i 4.4.A Proceed. to place the Hydrogen Recombiner ir.
cerc:
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- .,v.,1 TABLE 4-1
- f:j II;STRU:4EilT At:0 PO'.-lER CABLE CO:!!!ECT10:':5
,/
Piug Receptccie Number i,'umb e r t-Recc.b'ner Power Heat Exchanger Cable PlC5 J106 Enclosed Blower Cable P107 J107 Heater Cable P108 J108 Recombiner Instrumentation Thermocoupl es P101 J101 Differential Pressure Transmitter P102 J102
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,..A '
,,i.f...E' RECO:1BIliER IllSTRU:1ENT AND CONTROL SETTI.';G
?
ii.....a.
0;c ra ti on i'
Cevice
..ith Function Hveroce-Temperature Control F( C)
TSH1 Heater Inlet - Wall 175 (,9)
TSX2 Heater Outlet - Wall ic00 :750)
TS3 Heater Outlet - Gas 1300-(704)
TSH3 Heater Outlet Cas 1500 (815)
TSH4 Reaction Chamber Gas 1400 (760)
TSL4 Reaction Chamber - Gas 500 (250)
TIC 4 Reaction Chamber - Ges 1300./704)
TISX5 Reaction Chamber -
1400 50)
Outlet - Wall TISX5 Heater Exchanger Gutlet 150 5) s
- Wall Circuit Breakers
~
CBl Enclosed Blower tiotor -
Clcsed 480 V CB2 Heat Exchanger Fan Closec Motor - 480V CB3 Heaters - 480V Closed CB4 Instrument Control Closed Power - l?OV CB5 Primary Pc'.,er - 480V Cicsed Unit Pcwer Suptly Closed Start Switch HS1 Stop*
Timers Tl Low Temperature Start 2
~
Cutoff (h)
T2 Heater Power Delay (s)
EO Motor Starter 151 Enclosed Blower ::otor Auto IS2 Heat Exchanger Fan Auto Valves * -
VI -
Flow Transmitter, Open L.P. Port V2 Flow Transmitter, Opan H.P. Port
... $ NOTE.
1 Assure all Containment Isolation Valves are
.;c.. price to Aci.ua ting lis-IT '
,4 e..
o-*=*'
(x.
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[f;'l TABLE 4-3 POST-LOCA HYDRCCEN RECO::BII ATIC:
ZC'P.0 f
Date and tin.e of LOCA Cate and time of observation Estimated hydrogen concentrat. ion from previous observation vol.
Annunciator panel all green?
Obserged Value Nominal Value i Settcin' U
Control or Indicator
( C)
F ' C) 4 TSH1 12., ( 79)
TSX2 1400 (7c0)
TS3 1300-(704)
TSH3 1450 (738)
TSH4 1350 (722)
TSL4 1000 (530)
TIC 4 1300 (704',
TISX5 14C0 (7CO)
TISX6 150 ( 66)
CBI thro!'Oh CB5 Cic.2 HS1 SV T1 2
. 51
- =
1 i
'152 Auto
. - - - ~
..3._..-
EP 5 0 c fn ( ti r. i.. --)
Calculated approximation of hydrogen content of infit.en:
(
'Teco(TIC 4) - Temo(TS2) = EH 2 Yu
!25 b2 2
b 9.0 05 erver
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