ML18047A450

From kanterella
Jump to navigation Jump to search
EPRI Justification Rept.
ML18047A450
Person / Time
Site: Palisades Entergy icon.png
Issue date: 11/25/1981
From: Kramer E, Merrill P, Jeffrey Reed
MCGRAW-EDISON CO.
To:
Shared Package
ML18047A442 List:
References
1125, NUDOCS 8207160345
Download: ML18047A450 (7)
v • d • e


Text

EPRI JUSTIFICATION REPORT REPORT NUMBER 1125*

DATE: _ _/._~_-_1..._7_-_.i".._/_ _ _ __

P .K*. MERRILL REVIEWED BY: /,!l/.~ DATE: / / .- f?-tl .

---m~~~~~

J .N. REED MASONE!LAN DIVISION OF McGRAW EDISON

( 8207160345 820404 \

PDR ADOCK 05000255

' P . PDR

!NDEX

  • PAGc: NO Index. .* .* . * * * * " * * .*
  • e *
  • 0
  • * .* e * * *
  • l Ini:roductioa. . 2 Descrtptiou of Basic Model *
  • 0 . ..* 2 Selected Test Valve. 0 ..* * * * * * * *
  • 0 0 3 Ocsilt' Variations Betweeu PWB. Plaut Valves and. Seleeted Test Valves.

Couclusiou * ... ec**O&e

  • e
  • 0 Q 0 G 0 0 *
  • Assembly D~awing A8425 * * * * * * * * * * * ... 4 Parts List A8S29 * * * * * *
  • fl
  • * .. .. .. s Doc 3269A ll-l.3-81

-l-

JUSTIFICATION REPORT

1. Introduction
  • This report has been prepared for the Electric Power Research Institute, EPR!,

by Masoneilan Division of McGraw Edison at their request. This report will be integrated with EPR!'s Valve Selection/Justification Report.

The information released in this report is not considered proprietary, therefore there is no restriction placed on its use within the confines of the EPRI/PWR Safety and. Relief Valve-Test Program Report.

The valves in the United States subject to this test program were sold only to Westinghouse and were to be installed: at Westinghouse project sites.

Masoneilan has not been provided information to where specific valve serial numbers have been sent. This information should be available through Westinghouse. All valves used on Power Operated Relief Valve, PORV, applications in the United States were Masoneilan Model No. 38-20721 or 38-20771. All valves are 2 ...size.

Identification of the sites in the United States at which Masoneilan PORV's are located are as follows:

UTILITY PLANT MODEL NO.

Duquesne Light - Beaver Valley 1 38-20721 Indiana & Michigan Electric .- Donald Cook 1 & 2 38-20721 Pacific Gas & Electric - Diablo Canyon 1 & 2 38-20771 Tennessee Valley Authority - Sequoyah 1 38-20721 Virginia Electric & Power - North Anna 1 & 2 38-20771 Wisconsin Public Service - Kewaunee 38-20721

2. Description of Basic Model The model numbers 38-20771 and 38-20721 valves are top guided single seat ~lobe valves with pneumatic actuators. The valve plug is lifted off the seat by pneumatically loading the actuator. Positive closure is provided by the spring return or failure mode of the actuator. The valve plug is top guided in the valve bonnet. Adequate guiding area has been provided in the bonnet to prevent instability of the plug. The seat ring retainer provides easy and quick access to the seat ring and seat ring gasket for removal and maintenance.

The model numbers 38-20771 and 38-20721 are the only models installed in the U.S. The only difference is the valve plug used in model number 38-20771 uses a linear control contour and in model number 38-20721 has equal percentage contour. Critical dimensions that affect the valves shut-off, flow capacity, stability, and speed remain unchanged. This difference affects only the flow characteristics of modulating valves thus has no significant impact to the EPRI test.

The flow is from under the valve body bridge i.e., the flow forces the valve plug open. The actuator selected has sufficient spring thrust to dVercome these flow and pressure forces. Reference drawing numbers A842S ~nd A8529 *

3. Selected Test Valve

!he valve select:ed for test: was secured from. the Tennessee Valley Authorit:y from. the Sequoyah Site* This valve is essentially the same as those at other sites ..

4. Oesisp. Var1atious !etveeu PW'&. Plane Valves and Selected Test Valves As seated in the previous paragraphs there are no siguif icane design variations thac would affect the !PR.I tesc results or valve perf ormauce between the test valve and ochers in the field.

S.. Cone lus ion In summary the valve selected by !PRI is r:ept:"esentaeivei eo those cul'?'eutly in use 1J:i. the POB.V applications ia. the United States .

REVISIONS

. .. SYM.

1. REWORK 2. SCRAP DESCRIPTION
3. USE AS IS 4. RECORD CHANGE C REQ NO. 3731 4 2*3*"71
  • ~.B~'T CIA

~.'7<<:.S--

t

'C:..'lD~ DIA '3.SO DIA

'C:..G:.e.~--

Jt j DE.\AIL OF BUTT WE.LD ENO REFERENC-E'.

CERTIFIED DRAWING NO. CPHB-55-C W \THOUT AIR SET CE RllFIED DRAWINCo NO.C.PI 71-C.

WITH Alf\Stl' SIDE VIEW NATIONAL ACME D-2400X LIMIT SWITCH MOUNTING 2." 3 IA58RGP A8529-D

-z!' 3* IA 58 RGP A 8"'1712>-D TA.G NO. PARTS LIST UNLESS OTHERWISE SPECIFIED DRAWN WORTHINGTON CONTROLS COMPANY BACK SEAT CONSTRUCTION DIMENSIONS ARE IN .

OIJ..f.NSIONINli SYSTEM NORWOOD, MASSACHUSETTS MONTEBELLO, CALIFORNIA INCHES AND MILLIMETERS PLUG SHOWN IN UP POSITION A~D ARE AFTER PLATING i.-INCHES (MM)_,

25 INCHES ANGLES

~x, I*'~.1 "~~0 I f +/-

MILLIMETERS

... ;t x

3 :t x.x 0,8 x,xx

t0.25

~ .IX.\. CO.. 19C. IOHI

PC; NO. REVISIONS **

Ml. PART NO. NAME REQ. MATERIAL SYM. DESCRIPTION DISP. DATE APPROVED SIZE

1. REWORK 2. SCRAP 3, USE AS IS 4. RECORD CHANGE B R.t:Q WO. '3'59"1 4 9-11-10 7,.

010224--008-105 SPRING BARREL CAP ASTM A283 GR D

  • CONTAINED IN ASSEMBLY 013044-623-999 2 010191--002-117 BALL RACE USS MACH 5 A CONTAINED IN .4SSEMBLY 010309-083-999 010186--058-105 UPPER SPRING BUTTON ASTM A2S3 GR D 8 CONTAINED IN ASSEMBLY 0101'75-142-999 010220--033--002 SPRING BARREL 1 SAE 1020 e RECOM'llENDED SPARE PARTS 971512--020-110 NUT .1 ASTM A307 1" - 14UNS REMACH INE YOKE PER 010405-008-A 010285--012-002 DIAPHRAG\1 PLATE .1 SAE 1020 1*

8 010275--025-686 010217-024-105 DIAPHRAGM STOP. PLATE NEOPRENE & RAYON FABlUC ASTN A283 GR D

~TES:

9 II 010217-004--002 DIAfHRA(;'.I WASHER SAE 1020 1. VALVE STROKE ~ 1 .50 INCHES 10 010700--006-100 YOKE ASTM A216 GR lltB 2. MAXIMUM TEMPERATURE - 650 o F 11 010213-006-317 PACKING BOX WAKEF I ELD ALLOY 41

3. AIR PRESSURE IN THE DIAPHRAG.I CHAMBER MUST NOT 12 010209-013-410 PACKING BOX GLAND 1 ASTM B16 EXCEED 5 5 PS I G TO PREVENT COMPONENT D.AMAGE 13 971159--008-110 CAP SCREW 4 ASTM A307 1/2 - 13UNC X 1 ,75 14 971335--002-250 DRIVE SCREW 2 GENERAL AUSTENITIC ST.ST. 4. REQUIRED AIR PRESSURE INPUT TO BEGIN LIFT OF 15 983750-001-153 .SER I AL PLATE ASTM A167 N 304 PLUG FROM MAIN SEAT - 29 PSIG 16* 011156-134-780 PLUG STEM HAYNES ALLOY 25 5. MAXIMUM A IR TO OPERATE VALVE 55 PSIG 17 010102-009-780 PACKING BOX GLAND ASTM A276 TY 316 18 010106--001-026 DRIVE NUT SAE 1117 <D. Vl::.L*vE ":...,; =4<D
7. REQUIRED AIR PRESSURE. INPUT FOR SHUT 20 007905-008-066 BODY STUD 8 ASTM A 193 GR B7 7/8 - 9UNC X 3.38 OFF OF BACKSEAT =55 PSIG.

21* 971342-027-780 PIN HAYNES ALLOY 25 22 013902-009-780 SEAT RING RETAINER ASlM A461 GR 630 C0~0\110\...1 H-900 23 013454-658-780 BODY ASTM A351 GR CF 8M 24* 010234-608-780 SEAT RING ASTM A276 TY 316 & N0.6 STELLITE 25* 013434-IOJ-780 PLUG ASTM A276 TY 316 & ~0.6 STELLITE

26. 009191-431-801 SEAT RING JASKET 304 ST .ST. WITH ASBESTOS 2.75 o.o. x 2.38 1.0. x .125 27° 010110-237-780 BUSHING NO. 6 STELL ITE BODY GASKET 304 ST .ST. WITH ASBESTOS 3.38 O,D. X 2.94 I .D. X .125 28* 009191-170-801 29* 013044-618-780 BONNET 1 ASlM A351 GR CF 8M 30 971511-068--010 ~T 8 ASTM A194 GR 2H 7/8" - 9UNC PACKING 10 ASBESTOS & GRAPHITE 31
  • 005675-503-779 33* 971490-003-177 PACKING BOX STUD 2 ASlM A193 GR 88 1/2 - 13UNC X 2.00 34 010105--001-780 PACK I NG BOX FLANGE 1 ASTM A235 CL C 971520-005-158 PACKING BOX NUT 2 ASTM A194 GR 8 (TUFFTRIDED) 1/2 - 13UNC 35 sa3676--003-SOO INDICATOR PLATE 1 ALUMINUM 971305-015-250 MACHINE SCREW 3 GEN. AUSTENITIC ST.ST.

POINTER A~TM A \(0'7 TY '304 01040&221-lSo SPLIT CLAMP USS MACH 40.

41.

010408-384-117 001904--004-426 971919-007-916 PACKING BOX GASKET STRING PACK ING ASTM B152 TYP ETP ASBESTOS & GRAPH I TE 2.50 O.D. X 2.12 I .D. X .020

.19 DIA X 16.00 010175-143-152 ACTUATOR STEM ASTM A582. TY 303 42* 7 .12 0 .D. X 5 .62 I .D. x .031 001904-628-800 YOKE GASKET 1 ASBESTOS FISER.

430 CAP SCREW 12 ASTM A307 3/8 - 16UNC X .75 44 971161-003-110 45 010310-004-105 LOWER DIAPHRAG\1 CASE ASTM A283 GR D 40 ASThl A307 3/8 - 16UNC 46 971511--012-110 NUT OIAPHRAQ.I CASE CAP SCREW 40 ASTM A307 3/8 - 16UNC X 1.25 47 971004-017-110 010186-059-105 LOWER SPRING BUTTON 1 ASlM A283 GR D 48 49 .. 010309-082-105 UPPER DIAPHRAG\1 CASE ASTM A283 GR 0 000049-001-130 SPRING ASlM A229 50 BALL & RETAINER GEN

  • AUSTEN ITI C ST .ST.

51 971700-027-250 010199-019-021 ADJUST ING SCREW I ASTM A108 GR B 1113 52 8 - 32UNC X .56 971264-008-110 MACHINE SCREW 8 ASTM A307 53 UPPER MOUNTING BRACKET I ASlM A293 GR D 54 008149-311-105 4 ASlM A307 5/16 - 18UNC X ,62 55 971002-007-110 CAP SCREW 971961-005-888 SWITCH 2 PURCHASED ASSEMBLY 56 009790-041-207 TAKE OFF BUTTON 2 ASTM Al93 GR 86 57 ADAPTER 1 ASTM Al93 GR 86 58 009790--003-207 1/4 - 28UNF 971514-001-110 LOCK NUT 2 ASlM A307 59 12 - 24UNC X .81 971268--012-110 MACHINE SCREW ASTM A307 60 61 051425--010--026 STEM CONNECTOR SAE 1117 CLAMP ROO ASTM A582 TY 303 62 051332--018-150!. 5/16 - IBUNC LOCK NUT ASlM A307 63 971513--006-110 LOWER t.()UNT ING aRACl<ET ASTM A283 GR D 64 008149-C!.95-105 ASSEMBLY DW:S A842S-D UNLESS OTHERWISE SPECIFIED DRAWN MASONEILAN INTERNATIONAL, INC.

DIMENSIONING SYSTEM CHECKED D1MEN5ll)NS ARE IN NORWOOD, MASSACHUSETIS, U.S.A.

INCH[S ANIJ MILLIMETf.RS j.-rNCHES (MM)_,

AND ARE AFTER PLATING TOLERANCES ON:

!1111llED HOLE TOLERANClS INCHlS ANGLES PER AND10387

.x

+/-.1  !! +/-.03

.xx [ .xxx

+/-.010 I+/-2°30' FILLET RADII _ _ * - - - - MATERIAL FORGING NO.

SIZE CODEIOENT.NO. REV.

MILLIMETERS

o'a :a~:,

BREAK SHARP EDGES_

fc-'. ,.".,.,o-"'c_"'_ov_*--'.:c""c_"...:"s_~.-1 Fl NISH MACHINED SURFACES REF .. USAS 846.J.1962 J F. N O . f - - - - - + - - - - - - j D ~38683 A 8~ 2. 9

"'sc"'**"LE.-L-----r.;;w-;;.o.""'N"".""H'"2=-o~t0-9_3_-4

__,r'--r---=__J---I B

BS - MUESCO CONTROLS, INC .

Retrieved from "https://kanterella.com/w/index.php?title=ML18047A450&oldid=2415906"