ML18051A321

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Forwards Status of SEP Topic VIII-4, Electrical Penetrations of Reactor Containment, Program to Evaluate Adequacy of Penetration from Overload & Short Circuit Conditions.Next Status Rept Will Be Submitted by 830715
ML18051A321
Person / Time
Site: Palisades Entergy icon.png
Issue date: 02/11/1983
From: Toner K
CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To: Crutchfield D
Office of Nuclear Reactor Regulation
References
TASK-08-04, TASK-8-4, TASK-RR NUDOCS 8302240273
Download: ML18051A321 (16)
v • d • e


Text

General Offices: *212 West Michigan Avenue, Jackson, Ml 49201 * *(517) 788-0550 February 11, 1983 Dennis M Crutchfield, Chief Operating Reactor Branch No 5 Nuclear Reactor Regulation US Nuclear Regulatory Commission Washington, DC 20555 DOCKET 50-255 - LICENSE DPR PALISADES PLANT -

SEP TOPIC VIII-4 "ELECTRICAL PENETRATIONS OF REACTOR CONTAINMENT" -

STATUS UPDATE OF PROGRAM TO EVALUATE THE ADEQUACY OF PENETRATION PROTECTION FROM OVERLOAD AND SHORT-CIRCUIT CUNDITIONS In response to a request embodied in NRC letter dated March 26, 1981, Consumers Power Company established a program to not only evaluate the adequacy of existing containment electrical penetration protection from circuit overload and short:..circuit conditions at the Palisades Plant, but to also enhance such protection where appropriate.

As you are aware, the purpose for the evaluation and resulting enhancement is to preclude damage to the penetrations which could conceivably result from such overload and short-circuit conditions concurrent with a loss-of-coolant accident.

The purpose of this letter is to apprise the NRC of the current status of the aforementioned program and to *provide theNRC with expected completion dates for the work that yet remains to be done.

By letter dated October 16, 1982, Consumers Power Company indicated that the preliminary overload and short-circuit evaluations for all of the power, control and instrumentation circuits that pass through containment would be completed by January 1, 1983.

Consumers Power Company also indicated that, based on the aforementioned evaluations, those circuits that lack necessary protection would be itemized and preliminary recommendations for protection enhancement in such circuits would be formulated by January 1, 1983.

On January 13, 1983, Consumers Power Company completed the preliminary evaluations for essentially all of the circuits, itemized those circuits that lack necessary protection and formulated preliminary recommendations to enhance the protection in each of the circuits itemized.

In all cases, such preliminary recommendations call for the installation of secondary overload and short-circuit protective devices such as circuit breakers or fuses.

Attachments Ill, 2 and 3 of this letter serve to summarize the status of the power, control and instrumentation circuits, respectively, that were OC0183-0013A-NL02 s302240273 * -a302 rr---

PDR ADOCK 05000255 P

.PDR

r -----=-.....

I DMCrutchfield, Chief Palisades Plant SEP TOPIC VIII-4 February 11, 1983 evaluated.

In the attachments, the circuits are categorized as either acceptable or unacceptable based on the degree of penetration protection from circuit overload and short-circuit conditions that currently exists..It should be noted that a circuit is declared as acceptable if any one of the following types of protection is provided:

1) the existence of adequate primary and secondary overload and short-circuit protective devices (ie, circuit breakers and/or fuses),
2) environmental qualification of circuitry and components located inside containment,
3) automatic disconnection of the circuit from its power supply by the safety injection signal or
4) the inherently low magnitude of short-circuit current.

It should also be noted that items #1, 2 and 3 above have been determined as acceptable means of penetration protection by the NRC and are docume.nted as such in the NRC letter dated March 26, 1981.

Item #4 above applies to most of the evaluated instrumentation circuits. It is for those circuits categorized as unacceptable that preliminary recommendations for protection enhancement have been formulated.

The next objective of Consumers Power Company is for its System Protection Engineering Department (SPED) to issue the final report of its preliminary circuit evaluations which will itemize the circuits categorized as unacceptable and will provide the aforementioned recommendations to install adequate secondary overload and short-circuit protective devices.

It is currently expected that this report will be issued by March 1, 1983.

After the SPED report is issued, it will be reviewed by the Nuclear Operations Department (NOD) to evaluate, on a final basis, where additional protection is necessary and what means should be employed to provide such protection.

The NOD review will provide justification for electing to enhance penetration protection for an unacceptable circuit by means other than those recommended by the SPED (eg, by administrative controls as permitted by the NRC and described in its March 26, 1981 letter).

It is currently estimated that the final NOD evaluation will be completed by July 1, 1983.

This estimate of July 1, 1983 completion is based on the present commitment of significant NOD resources to preparation for the upcoming 1983 Palisades refueling outage, OC0183-0013A-NL02

r ___ __

DMCrutchfield, Chief Palisades Plant SEP TOPIC VIIi-4 February 11, 1983 In an attempt to keep the NRC periodically apprised of the Consumers Power Company program to enhance the containment penetration protection from postulated overload and short-circuit conditions, Consumers Power Company expects to provide the NRC with another status update by July 15, 1983.

The July 15, 1983 status update will provide the following:

1) a list of circuits for which enhancements in penetration protection from overload and short-circuit conditions will be made,
2) the proposed means for enhancement of the circuits described in item 1 above which will include adequate justification for chosen methods of enhancement other than the installation of secondary overload and short-circuit protective devices as recommended by the SPED and
3) a schedule for the detailed engineering, equipment procurement and installation of the above penetration protection enhancements (note, it is currently expected that such enhancements will be completed by the end of the 1985 refueling outage).

Kerry A Toner Senior Licensing Engineer CC Administrator, Region III, USNRC NRC Resident Inspector - Palisades OC0183-0013A-NL02

ATTACHMENT l!l Consumers Power Company Palisades Plant Docket 50-255 SEP TOPIC VIII-4, "ELECTRICAL PENETRATIONS OF REACTOR CONTAINMENT" STATUS UPDATE OF PROGRAM TO EVALUATE THE ADEQUACY OF PENETRATION PROTECTION FROM OVERLOAD AND SHORT-CIRCUIT CONDITIONS February 11, 1983 5 Pages OC0183-0013B-NL02

l.
2.
3.

li *

5.

TABLE 1.1 ACCEPTABLE POWER CIRCUITS (CIRCUITS WITH ADEQUATE PRIMARY AND SECONDARY PROTECTORS)

Fower Circuit Scheme (Ref. Dwg.)

Number Feeder to MCC #9 Bl.304 (E4-l & El2)

Pres.surizer Power 860 Relief Valve s61 M01042B and Ml043B

( E256*1A & 2)

Primary Coolant A2103 Pumps A2203 P50A-D A2104 (ElO)

A2204 Primary Coolant A2103 Pump A2203 P50A-D Differential A2104 Relay Circuit A2204 (ElO)

Pressurizer Heater Al305 Transf onner Al2ll Xl5 and Xl6

( F3 & El2)

TABLE 1.2 ACCEPTABLE POWER CIRCUITS (ENVIRONMENTALLY QUALIFIED POWER CIRCUITS)

Power Circuit Scheme (Ref. Dwg.)

Number

1. Hydrogen Recombiner B2005 M69A and M69B Bl76 (E258)
2. Pressurizer Relief Bl77 Isolation Valve B28l MOl042A. and M1043A (E242-4)
3. H.P. Injection Valve Bl37 M03007, M03009, M030ll Bl97 and M030l3 Bl57 (E244-l & 4)

Bl51

4. L.P. Injection Valve Bl41 M03oo8, M03010, M03012 Bl47 and M03014 B247 (E244-l)

B251

5. Primary Loop, Shutdown Bl67 Cooling Valve M03015 B271 and M03016 (E244-3)

.6.

Containment Cooler Bl2o8 Recirc Fan V1A-4A Bl209 (E2l5 and E2l 7)

Bl210 Bllo8

TABLE 1.3 ACCEPTABLE POWER CIRCUITS (POWER CIRCUITS AUTOMATICALLY DISCONNECTED BY SAFETY INJECTION SIGNAL)

Power Circuit (Ref'. Dwg.)

Containment Cooler Recirc Fan V1B-4B (E218)

Scheme Number.

B3l7 B327 B337 B417 TABLE 1.4 UNACCEPTABLE POWER CIRCUITS Power Circuit (Ref. Dwg.).

1. Fuel Transfer Machine (E176-l)
2. Misc DC Lighting (WD950-21)

Scheme Number B736

3. H.P. Injection Valve B24l M03o62, M03o64 M03o66 a."ld M03o68 (E244-l & 4)

B237

4. Primary Coolant Pump P50A-D Space Heater (El83)

B257 B261 A2103 A2203 A2104 A2204

TABLE 1.4 (CONTINUED)

UNACCEPTABLE POWER CIRCUITS Power Circuit (Ref. Dwg.)

5. Shield Coolant Pump P77A & B (E233)
6. Coolant Pump Bearing Lift Pump P80A-D (El85)
1. Bearing Oil Lift Pump P81A-D (EJ.84)
8. Primary Cooling Pump Backstop Pump P83A-D (El86)
9. Primary Cooling Pump Backstop Pump P84A-D (E186)

Scheme Number B291 Bl71 B313 B321 B411 B42l.

0013 D023 0014 0024 B265A B265B B265C B265D B755A B755B B755C B755D

TABLE 1.4 (CONTINUED)

UNACCEPTABLE POWER CIRCUITS Power Circuit (Ref. Dwg.)

10. Purge Exhaust Fan V35 (E223)
11. Control Rod Drive Mech Fan V49A & B (E283-l)
12. Pressurizer Shed Fe.n v61c (E283-2)
13. Lighting Transformer "X37 (E100*3)
14. Emergency Lighting Transformer X39 (El70-2)
15. Containment Fixtures

( - )

16. H.P. Safety Injection

,Mode Selection Valve

. M03080' M03o81, M03o82 and M03o83 (E244-5 & 6)

17. Safety Injection Tank T82A-D Outlet Valves (E243)

Scheme Nµmber B549 B0107 B0lo6 B826 B215 B2413 B2ll.3 B2213 B2313 B2129 B2329 B2229

82429

ATTACHMENT /12 Consumers Power Company Palisades Plant Docket 50-255 SEP TOPIC VIII-4 "ELECTRICAL PENETRATIONS OF REACTOR CONTAINMENT"

.STATUS UPDATE OF PROGRAM TO EVALUATE THE ADEQUACY OF PENETRATION PROTECTION FROM OVERLOAD AND SHORT-CIRCUIT CONDITIONS February 11, 1983 4 Pages OC0183-0013B-NL02

e PALISADES CONTROL CIRCUITS

.TABLE 2. l ACCEPTABLE CONTROL CIRCUITS CIRCUITS WITH ADEQUATE PRIMARY AND SECONDARY PROTECTORS Equipment

l.

Air Room Purge Fan V-46

2.

Primary Coolant Pumps P50A-D Instrumentation (Seal Leak.age and Heat Exchange Flow)

3.

Control Rod Drive Mechanism Seal Leak-Off Temperature Instrumentation

4.

Fire Indicating Unit Alarm and Detectors TABLE 2.2 ACCEPTABLE CONTROL CIRCUITS ENVIRONMENTALLY QUALIFIED CIRCUITS

1.
2.
3.
4.
5.
6.
7.
8.
9.
10.

ll.

l2.

l3.

Equipment Charging and Letdown Valves SV2113, SV2115 and SV2117 Pressurizer Spray E/P 1057 and E/P 1059 Pressurizer Spray Valve Indicating Circuit P01057 and P01059 Pressurizer Level Indicator LT103 Containment Cooler Recirc Fan V-4A Service Water Solenoid Valves Hydrogen F:ecombiner M69A and M69B PrinariJ S2."nple Valves SV1901 - SV1905 Safety Injection Low Pressure 1*:0V30o8, MOV3010, 1WV3012 and MOV3014 Safety Injection High Pressure MOV3007, MOV3009, NOV3o62 and MOV3o64 Safety Injection High Pressure YDV3011 MOV3013, 1,~0V3o66 and MOV3o68 E:hutd.o*.m Cooling !*:OV3015 and 1.:cv3016 Pressurizer Relief Isolation Valves 1042A and l043A Containment Cooler Recirc Fan V-lA, V-2A and V-3A Service Water Solenoid. Valves TABLE 2. 3 UNACCEPTABLE CONTROL CIRCUITS

2.

\\....,.

Eauipr.!ent

JC Oil Lift ru.-::ns P81.:,,-::

Hea::. Ve::t Eole::.oici Fo~,*er :?:elie:' V2.lves Co.::tai:i.'1en.t Cooler 3.ecirc Fa:-i V-4;..

Service i..'ater 72lvePosition Operator Scheme No*

B713 1Fl3/1Fl4 lF15/l.Fl6 IR46 ID02 Scheme No 855 s56 857 IL34 Bll08 Bl76/B2005 J057 Bl41/Bl47 B247/B251 Bl37/Bl97 B241/B237 Bl57/Bl51 B257/B261 El67/B271 Bl77 /5281 Bl208/Bl209 Bl2l0 Scheme 1;0

U:Jl3 /DOl4 D023 /0024 J--2103 /-t..2104

' ?~o;/ 1' 2?0h

  • '""--C::.. -

r...

.:::cc::

~ _,,,;

Ell08

e

. TABLE 2.3 UNACCEPTABLE CONTROL CIRCUITS (Continued)

5.
6.
7.
8.
9.

lO.

ll.

l2.

13.
14.
15.
16.
17.
12.

lC

20.

2la.

2lb.

2lc.

22.
23.
24.

25a.

25b.

c::'.G.

~.

~'.

');:

r*.~-

'-'~.

Equipment Pressurizer Power Relief Valve l042B Safety Injection Tank T-82 Valves High Pressure Safety Injection Hot-Leg Pressure Letdown Valve Event Recor-der ER-0001 and ER-0002 Receiver Tank Recirc Solenoid Valves Tank Intake and Discharge Solenoid Valves Tank Nitrogen Solenoid Valves Miscellaneous Solenoid Valves Shield Cooling Water Valves Reactor Bldg Evacuation Siren Head Vent Solenoid Power Relief Valves Containment Cooler Recirc Fan V-lA, V-2A and V-3A Service Water Valve Position Operator Contaimnent Gas Radiation Sample Solenoid Valves Quench Tank Solenoid Valves Shutdm.'D. Cooling and Letdown Valves Letdown Orifice By-Pass Stop Valve Charging and Letdovm Line Valves Primary Coolant Pump Controlled Bleedoff Isolation Valve Pressurizer Power Relief Valve 1043B Prir:lary Coolant Pump Vibration Alarm Chemical and Volume Control System Solenoid Valves Safety Injection Tank T-82A Valves High PressUl*e Safety Injection Hot Leg Pressure Letdown Valve Annu.~ciators - Safeguards, Safety Injection and Isolation Systems Reactor Vessel Flange Leak Drain Valves

.4nnu.iciators - Radwaste Syste!!l (Position Iniication fa!" Frir:ary Syste!!: Drain Ta.11k

~ve:rt ::i.ecorder ER-0003 P-i~unciator - Pressurizer Eeater T!"a..~sformer Ho 15 Hi-Lo Pressure, No 16 Ei-iio Pressure 1'.:~u...-1ciators - Primary System - Volume, Le*,*el Pri...,ary Coola..it ::::*u::::p, Stea=! Gen and Rod Jrives Shield Cooling Water Valve Shield Cooling Surge Tank M/U Valve Scheme No s6o s45/s47 s97 IGOJ./IG02 J039 J04o J04l J042

'Sl5 S63 s94 Bl.2oe/Bl209 Bl210 IR94 Sl.2 Sl7 820 S55 S30 S61

r
wo3 S30 s46/s48 s96 Kl3 W007 Kl5 IG03 vo-;-;:;1500

-* ) --

K05/E1600 K07 Sl6 S5~

2

  • TABLE 2.3 UNACCEPTABLE CONTROL CIRCUITS (Continued)
31.
32.
33.
34.
35.
36.

37a.

37b.

37c.

37d.

37e.

37f.

38.
39.
40.

41

~.

42.

h~

l-'*

-'"'-7.

-'5.

~~-

~.

L'"'

. I

  • L;.E.

Le

.. /.

="1

~,...

/ "-.

?"-.

Equipment Steam Generator and Air Room Evacuation Siren Pressurizer Back-uti Heater Bank 1 Bank 3 and Bank 4 -

and Bank 2 Pressurizer Proportional Heater Containment Bldg Atmosphere Gas Sampling System Containment Bldg Gas Radiation Monitoring Sampler Containment Emergency Lights Scheme No.

S63 Bl500 Bl600 Bl50J/Bl6ol Jl38 S78 B215 IROl thru IR45 Control Rod Drive (Motor and Brake)

Control Rod Drive (Limit Switch - raise &

Control Rod Drive (Limit Switch)

Control Rod Drive (Limit Switch)

Control Rod Drive (Limit Switch) lower)IROl thru IR45 IROl thru IR20 IR2l thru IR41 IR01/IR02 IRll/IRl2 IR03/IR04 IR09/IRlO Control Rod Drive (Lin:it Switch)

Shield Cooling Pump P77B Pressurizer Relief Isolation Valve 1042A Fri.nary Coolant Pump, Backstop Pumps P83A-D Pressurizer Relief Isolation Valve 1043A Fuel Transfer Machine Consoles

?rinary Coolant Pump, Backstop Pur:ips P84A-D Co~tainm.e~t Lights Ic:.ine :Re:J.oval F a.-1'1s

?resEurizer Shed Cooli...*g Fa..~ V6l.A and B

= ressurizer Shed Cooling ?an *v61C Eigh Pressure Safety Injection Mode Selectic:-. Valve 1*103081

~a:ety Injection Tank T-22A Discharge

i;~! Pressure Safety Injection l*~ode Se2.ectio
:: Valve go3082
a:~::t:; Ir:jection Ta.-rJ.k T-82C Discharge l*1GV3C49
i::h :Cre::sure Safety In.jection 1-~od.e S::lectio:::. Valve r.::::3023 Sa:'ety I::jectio:cl Tanir.. T-E23 :Uisc~a::-ge l.:OV3045
iEh ?yessll!"e Safety I:1.jectio:i !**:88..e Select:.on

-\\-:- ~l.~e 1.:::.3 J2<)

IR05 thru IRo8 IRl3/IRl4 IRl9/IR20 IR15 thru IPJ.6 IROl thru IR45 Bl7l Bl77 B265A/B265B B265C/B265D B281 J051 B755A/B755"B B755C/B755D B917 Jll50/Jll51 B9L.6t./PCh~?

.;...J~

BOlo6 B2ll3 B2l28/Scl

-'/

132213

~?-:::?a

.D __.__,,

B2313 B232S:

=.2L.13

  • Environmentally Qualified, See Table 2.2
3.
55.

56a..

56b.

56c.

57.
58.
59.
60.

0-.

62.

63a.

63b.

63c.

63d.

64.
66.
67.

6'.:a.

oc-o.

TABLE 2.3 UNACCEPTABLE CONTROL CIRCUITS (Continued)

Eauip:nent Scheme No Safety Injection Tank T-82D Discharge MOV3052 Reactor Vessel Differential Pressure Temperature Controller Radiation Zone Door Alarm Control Rod Position Indicating System Containment Bldg Reactor Cavity Humidity Letdown Flow Temperature Control Primary System Drain Tank Pump Level Control Primary Coolant Pump Speed Containment Bldg Gas Monitoring Fuel Hdlg Area Radiation Mani tor #i Air Room-Radiation Monitor Personnel Air Lock Radiation Mani tor Fuel'Hdlg Area Radiation Monitor #2 Control Rod Primary Position Indicating System (Synchros)

Safety Injection Tank T-82A. Pressure Control Valve Position Safety Injection Tank T-82C Pressure Control Valve Position Safety Injection Tank T-82B Pressure Control Valve Position Containment Bldg Dome Humidity Safety Injection Tank T-82D Pressure Control Valve Position Control Rod Drive Clutches B2429 IP63 IT76 s64 IROl thru IR45 IH04 IT43 J023 Y0133 IR87 via S70 IR74 IR75 IR76 IR93 IROl thru IR.45 IP37 IP39 IP38 lliOl IP4o IR01/IR02 IR11/IR12 IR03/IR04 IR09/IR10 IR05 thru D.08 Irtl3/IR14 IR.19/IR20 I?2-5 thru I?J.8 IR21/IR22 IR27/IR28

G.29 thru I?32 r-03 thru I <37 P32 thru I?l.!2.

IR42 thru -\\

  • ~
4.

ATTACHMENT 113 Consumers Power Company Paliades Plant Docket 50-255 SEP TOPIC VIII-4 "ELECTRICAL PENETRATIONS OF REACTOR CONTAINMENT" STATUS UPDATE OF PROGRAM TO EVALUATE THE ADEQUACY OF PENETRATION PROTECTION FROM OVERLOAD AND SHORT-CIRCUIT CONDITIONS February 11, 1983 1 Page OC0183-0013B-NL02

CIRCUIT SCHEME NO.

J052 IR 74 IR 75 IR 76 IR 77 IR 78 IR 79 IR 80 IR 93 TABLE 3 UNACCEPTABLE INSTRUMENTATION CIRCUITS

  • CIRCUIT DESCRIPTION Closed Circuit Television #2 Control Console for 102VAC supply to the In-Contain~ent Camera Fuel Handling Area ltl Monitor + 20VDC Supply Air Room Area Monitor + 20VDC Supply Personnel Air Lock Area Monitor + 20VDC Supply Containment Isolation :tvionitor + 20VDC Supply Containment Isolation Monitor + 20VDC Supply Containment Isolation Monitor + 20VDC Supply Containment Isolation Monitor + 20VDC Supply Fuel Handling Area #2 Monitor + 20VDC Supply
  • Due to the large number of acceptable instrumentation circuits evaluated (approximately 430) they are not listed in this attachment; only the unacceptable circuits a.re listed.

Complete records of the evaluations of all of the instrumentation circuits are on file, however, and are available for review.

OC0183-0013B-NL02

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