ML19347F744

Trip Rept of 810428 Plant Tour to Observe Sys Used to Achieve & Maintain Plant Shutdown,Including Decay Heat Removal Sys & Auxiliary Feedwater Sys.Handouts Encl

ML19347F744
Person / Time
Site:	Midland
Issue date:	05/16/1981
From:	Hood D Office of Nuclear Reactor Regulation
To:	Office of Nuclear Reactor Regulation
References
NUDOCS 8105260194
Download: ML19347F744 (15)

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wAsHWGTON, D. C. 20666 MAY 1 R 1931 Docket Nos. 50-329/330

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Cor.sumers Power Company l

FACLITY:

Midland Plant, Units 1 & 2

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SUMMARY

OF APRIL 28, 1981 SITE VISITS

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j On April 28, 1981 members of the NRC staff toured the Midland Plant.

A general site tour was corducted during the morning by R. Cook, D. Hood and E. Brown.- An afternoon tour by several staff, Consumers and Bechtel representatives (Enclosure 1) was conducted to observe systems used to achieve and maintain plant shutdown, including the Decay Heat Removal System and the Auxiliary Feedwater System.

The afternoon tour was prepatory to meetings scheduled for April 29 - 30, l

1981 to review these system designs.

t Handouts used to assist in this tour are attached (Enclosure 2).os'3 Darl Hood, Project Manager Licensing Branch No. 4 Division of Licensing Enclosures : As stated cc: See next page l l l t 1 h 0185250194

Mr. J. W. Cook Vice President Consumers Power Company. 1945 West Parnall Road Jackson, Michigan 49201 cc: Michael I. Miller, Esq. Mr. Don van Farowe, Chief Ronald G. Zamarin, Esq. Division of Radiological Health Alan S. Farnell, Esq. Department of Public Health Isham, Lincoln 8 Beale P.O. Box 33035 Suite 4200 Lansing, Michigan 48909. 1 First National Plaza Chicago, Illinois 60603 James E. Brunner, Esq. William J. Scanlon, Esq. Consumers Power Company 2034 Fauline Boulevard 212 West Michigan Avenue Ann Arbor,-Michigan 48103 Jackson, Michigan 49201 U. S. Nuclear Regulatory Commission Myron M. Cherry, Esq. Resident Inspectors Officer:ge. 1 IBM Plaza Route 7 fypi( '" Chicago, Illinois 60611 Midland, Michigan 48640pp;;, a rr Ms. Mary Sinclair Ms. Barbara Stamiris [ya w! 5711 Summerset Drive 5795 N. River ,1 Midland, Michigan 49640 Freeland, Michigan 48623 Frank J. Kelley, Esq. Attorney General State of Michigan Environmental Protection Division 720 Law Buf1 ding Lansing, Michigan 48913 Mr. Wendell Marshall Route 10 Midland, Michigan 48640 Mr. Steve Gadler 2120 Carter Avenue St. Paul, Minnesota 55108

i Consumers Power Company - NRC Midland Site Tour April 28,1981 Consumers Power Company NRC Staff J. Slade D. Hood - J. Alderink E. Sullivan R. Polich .R. Anand R. Huston J. Mazetis 4 P. Papaioannou al. Jensen Bechtel i R. Burg T. Ballweg 4 1

.4 EllCLOSURE 2 i f V:: J _ A \\ J 3 _ A N N RC S::-~E V::S::~~ APRIL 28. '981 ~ 1 .l 1 -rm, m_, .,_...-,,,m. _. - -, - - -,.,.. _ _,, ~,,,.... _ -. -,, - _,, _ -. - ~. ~,., - - -... -

PLANT ARCAS TO BE VISITED April 28,~1981 1. 614 Switchgear Room - 4160 & 480 VAC Switch 2. Lower Cable Spreading Room i - Cable Tray Installation 3. Main Control Room 4. !?cmote Shutdown Panel 5. Main Steam Line Area ) - MSIVs, POAVs & Pressure Relief Valves 6. Cable Penetration Area - Transfer Switch Panel Proposed Location 7. Containment Sump Area - DHR drop line, dump-to-sump, and general contained sump area 8. Decay Heat Removal Pump Room - Pumps, Lines and Valves 9. Auxiliar, Feedwater Pump Area - Pumps, Lines and Valves 10. Decay llect Exchangers 11. Unit 2 Pipe Penetration Area /CCW 12. Makeup Pumps /CCW - Pumps, Lines and Valves 13. Emergency Boration System - Proposed location NOTE: Pressurizer spray l ines, PORV and safety valves have yet to be installed.

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q MAIN / AUX. CONTROL PANELS I i T4 4 5! / '-1 II l g } I I i i UNIT 1 UNIT 2 l. MA~d CONTROL BOARD - Control and indication for Turbine, econdary, Reactor, Primary, and Engineered Safety Features c Sys tems 2. COMMON PANEL - Control and indication for Process Steam and common Engineered Safety Features Systems 3. REMOTE SHUTDOWN PANELS 4. POST ACCIDENT MONITORING PANELS 5. ELECTRICAL CONTROL PANEL - Control and indication for major plant electrical systems.

A PRESS. RELIEF MAIN STEAM VALVES (TYPB) l SOLATION >TO TURBINE g O TO ATM. TO ATM. MNi-- STEAM GEN. l v PRESSURE TO l C><C ? d, CONTROLLED PROCESS DUMP VALVES STEAM ~~ A w PRESS. RELIEF k MAIN STEAM AliE VALVES (TYP. 8) ISOLATION VALVE >TO TURBINE TO ATM. T A A d b DD G C><C 5Z Q i D TURBINE BYPASS / STEAM g Q_ GEN. TO ~M g Q CONDENSER 4 ~32 (TYR 4) m _ MAIN STEAM SYSTEM 4 -2 4-81

l m ,FROM D N B.W.S.T. LC Q v, w l DECAY HEAT ,FROM R.C.S. {$aR.B. R OVAL NHOT LEG -r, i VLC A FROM 3 f 7 $] -f S [ j pS NBW.SI V S5 [ UC S &v

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E7 TO MAIN p' p4 FEEDWATER MOTOR DRIVEN hl) AFW PUMP (A) RB (G) ( !!b d MNQ All A {Il j, 'l 4 -4 !IP r+ SX _s COOLING CONDE NSATE STO R/sGE M POND 4-H - TANK ELL ' >-f'N COND. + <}- ]'E Q DEA ERATOR STORAGE (M:-X TANK S g. STORAGE TANKS [J) TURBINE DRIVEN ^ E i AFW PUMP (B) RB q gy ^ --_s tp SERVICE WATER -a 'i TRAIN B l l l31 ( aa^" AT M A E RB V / \\ \\ AFW TURBINE PUMP DRIVER AUXILIARY FEEDWATER SYSTEM 4-2 3-81

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><j A PRE-FILTERS, 374 S g g kPOST FILTERS FE k~ RCS L t PURIFICATION LETDOWN 2 fRB DEMIN S, vN b h. )gS_ { ROM -- ~~~ - '- E -' - - ~ ~ ~ ST I l f1 MAKEUP L-+ -J TAN K X@ @?-;> HPI TO RCS p FROM /' j\\j m M P j (, , MAKEUP / i r HPl TO RCS PUMP'A a V S n a l\\1 >K1 b t>< d\\I YUhP@ '~ V >4 y HPl TO RCS a h > HPl TO RCS /' l\\l l\\f- ?, FROMm '(,' m2 BWSTr 7' FROM DHR b MAKEUP PUMP 'C' MAKEUP / HPI SYSTEM 4 - 2 4-81

\\ W VENT (STORAGEh) [ E.B.S. -> SAMPLE TA NK j EBS V RECIRCULATION LO A PUMP F X V FROM hfE RY> h h l\\j > TO MAKEUP PUMP SUCTION SYSTEM EMERGENCY BORATION SYSTEM 4-2 4-81

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