ML20002C738

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Responds to AEC 721227 Request for Clarification of 721109 & 1206 Responses to Re Industry Valve Body Wall Thickness Deficiencies.Listing of Applicable Valves Encl
ML20002C738
Person / Time
Site: Big Rock Point, Palisades  File:Consumers Energy icon.png
Issue date: 01/31/1973
From: Sewell R
CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To: Grier B
US ATOMIC ENERGY COMMISSION (AEC)
Shared Package
ML20002C734 List:
References
NUDOCS 8101100805
Download: ML20002C738 (10)
v • d • e


Text

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Power Company e.,...,e............, _..,...~.m. ~ _.,.

e,.....c _ e,,,_ es,e January 31, 1973 Mr. B. H. Grier, Regional Director Re: Docket No 50-155 Directorate of Regulatory Operations and US Atomic Energy Commission Docket No 50-255 799 Roosevelt Road Glen Ellyn, Illinois 60137

Dear Mr. Grier:

This 'etter supplements information presented in our letters of November 9 and December 6,1972, which were written in response to your June 29 letter on industry valve body wall thickness deficiencies.

This letter is intended to respond specifically to your letter of December 27, 1972, asking for further clarification of our previous response s.

With respect to the Palisades Plant, the applicable valves are listed in Attachment I.

These valves have been separated into 18 in-spection groups (maximum group size of 13, the data in our December 6, 1CJ72, letter was 1. error) based on our previously stated inspection plan variables of manufacturer, size, design rating and valve type. We do not find it possible to identify the probability that the proposed sampling plan would fail to identify a thin-wall valve. Among other things, it would be necessary for us to assume that there are thin-wall valves in the respective group populations. We believe this to be an unrealistic and unnecessary assumption. As an alternative to stating the probabilisi.:s you requested, we propose to calculate statistical confidence statements for the population of subject values using the stat'Astical mean and standard deviation of measured wall thickness values. This infomation will be developed when the test program we have proposed has been concluded.

Representatives of Regulatory Operations may review the data along with our proposals for further action should further action be deemed neces-sary.

The applicable valves at Big Rock Point are listed in Attach-ment II. Other data presented in Attachment II include the design pres-sure and the highest anticipated operating pressure. The column entitled

" Working Conditions" lists the code allowable pressure (USAS B-16.5) corresponding to the expected peak operating temperature. The column entitled " Safety Factor" is calculated as the ratio of Working Pressure to Operating Pressure. Where the pressures listed in the " Design" column f/ Of /O O 705

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Mr. B. H. Grier January 31, 1973 do not conform to USAS B V ' designation, design documents indicate these valves were purchased ta sesign pressure specifications. In these cases, working pressure was not uprated.

An indication of the significance of the safety factor in Attachment II can be realized by use of the equation presented in Para-graph 6.1 of USAS B-16.5-1968. This equation is used to indicate minimum valve and fitting wall thickness requirements. A calculation, using this equation, for a valve (24" Chapman Mo-Noo3A) with a calculated safety factor of 131, indicated a wall thickness margin greater than one inch. A similar calculation for another valve (3" Edwards 3"-207M3) indicated a wall thick-ness margin of greater than 0 3 inch.

Yours very truly, Ralph B. Sewell (Signed)

DMN/ map Ralph B. Sewell Nuclear Licensing Administrator l

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ATTACHMENT I - PALISADES NUCLEAR PLANT Bechtel Valve Valve Mark or Valve Group Number Service P&ID Size Type Mfgr PO No Pounds 1

MV-1021 A & B Loop Cold Leg Drain M-201 2

GB Velan N110M3 1500 MV-1022 A & B Loop Cold Leg Drain M-201 2

GB Velan N110M3 1500 MV-1032 A & B Loop Cold Leg Drain M-201 2

GB Velan N110M3 1500 O

.MV-1033 A & B Loop Cold Leg Drain M-201 2

GB Velan N110M3 1500 MV-106CVC Letdown Isol M-201 2

GB Velan N110M3 1500 2

CK-2112 Charging Line Relief Check M-202 2

CK Velan NSp210M3 1500 CK-2110 Chg Line Containment Isol M-202 2

CK Velan N21N 3 1500 MV-2114 Chg Line Containment Isol M-202 2

CK Velan N210M3 1500 MV-2116 Chg Line Containment Isol M-202 2

CK Velan N210M3 1500 MV-2118 Pzr Aux Spray Containment Isol M-202 2

CK Velan N210M3 1500 CK-3104 Safety Injection Check M-203 2

CK Velan N210M3 1500 c

CK-3119 Safety Injection Check M-203 2

CK Velan N210M3 1500 CK-3134 Safety Injection Check M-203 2

CK Velan N210M3 1500 CK-3149 Safety Injection Check M-203 2

CK Velan N210M3 1500

~

CK-3250 Safety Injection Check M-203 2

CK Velan N210M3 1500 CK-3251 Safety Injection Check M-203 2

CK Velan N210M3 1500 CK-3252 Safety Injection Check M-203 2

CK Velan N210M3 1500 CK-3253 Safety Injection Check M-203 2

CK Velan N210M3 1500

+

l 2

ATTACIMENT I - PALISADES NUCLEAR PLANT, (Contd)

Bechtel Valve Valve Valve Mark or Group Number Service P&ID Size Type Mfgr PO No Pounds 3

MOV-1043A Pzr Power Relief Isol M-201 2-1/2 GT Walworth M241 1500 MOV-1042A Pzr Pomr Relief Isol M-201 2-1/2 GT Walworth M2hl 1500 4

RV-1042B Pzr Power Relief M-201 2-1/2 RV Dresser M-1-H 1500 RV-1043B Pzr Power Relief M-201 2-1/2 RV Dresser M-1-H 1)OO 5

RV-1039 Pzr Safety M-201 3

RV Dresser M-1-H-1500 RV-lOh0 Pzr Safety M-201 3

RV Dresser M-1-H 1500 RV-10hl Pzr Safety M-201 3

RV Dresser M-1-H 1500 6

CV-1057 Pzr Spray Control M-201 3

GB BS&B M-1 1500 CV-1059 Pzr Spray Control M-201 3

GB BS&B M-1 1500 7

CV-2202 Letdown Orifice Bypass Control M-202 1-1/2 GB BE&B M-1 1500 CV-2002 Letdown Orifice Bypass Stop M-202 1-1/2 GB BS&B M-1 1500 8

CV-2117 Aux Spray Line Stop M-202 2

GB BS&B M-1 1500 9

CV-2115 Chg Line Stor M-202 2

GB Hammel M-233 1500 Dahl CV-2133 Chi Line Stop M-202 2

GB Hammel M-233 1500 Dahl CV-2111 Chg Line Stop M-202 2

GB Hammel M-233 1500 Dahl

3 ATTACHMENT I - PALISADES NUCLEAR PLANT (Contd)

Bechtel Valve Valve Valve Mark or Group Number Service P&ID Size Type Mfgr PO No Pounds 10 CV-2001 Letdown Stop M-202 2

GB Mason M-233 1500 Nielon fa, 11 CV-2009 Letdown Containment Isol M-202 2

GB Mason M-233 600 Nielon 12 MV-2225 Letdown Orifice Bypass Stop M-202 2

GT Velan N7M3 1500 MV-2227 Letdown Orifice Bypass Stop M-202 2

GT Velan N7M3 1500 MV-2198 Charging Relief Isol M-202 2

GT Velan N7M3 1500 13 MV-2007 Letdown Heat Ex Isol M-202 2

GT Velan N19M3 600 MV-2008 Letdown Heat Ex Isol M-202 2

GT Velan N19M3 600 MV-2010 Letdown Heat Ex Isol M-202 2

GT Velan N19M3 600 14 RV-2006 Intermediate Press Letdown M-202 1-1/2 RV Farris M-235 600 15 RV-Ohol Shutdown Cooling Isol Relief M-204 1-1/2 RV Farris M-235 1500 16 MO-3015 Shutdown Cooling Return Isol M-204 12 GT Velan M-1 1500

.MO-3016 Shutdown Cooling Return Isol M-20h 12 GT Velan M-1 1500 17 CK-3101 Safety Injection Check M-203 12 CK Velan N207M3R 1500 CK-3116 safety Injection Check M-203 12 CK Velan N207M3R 1500

N' ATTACHMENT I - PALISADES NUCLFAR PLANT (Contd)

Bechtel' Valve Valve Valve Mark or Group Number service P&ID s.ize Type Mfgr PO No

' Pounds 17.(Contd) 4.

CK-3131 safety Injection Check M-203 12 CK Velan N207M3R 1500 CK-3146 safety Injection Check M-203 12 CK Ve3nn N207M3R 1500 CK-3102 Safety Injection Check M-203 12 CK Velan N207M3R 1500 CK-3117 safety Injection Check M-203 12 CK Velan N207M3R 1500 CK-3132 safety Injection Check M-203 12 CK Velan N207M3R 1500 CK-3147 safety Injection Check M-203 12 CK Velan N207M3R 1500 18 CK-3103 safety Injection Check M-203 6

CK Velm N207M3R 1500 CK-3118 safety Injection Check M-203 6

CK Velan N207M3R 1500 t

CK-3133 safety Injection Check M-203 6

CK Velan N207M3R 1500 CK-3148 safety Injection Check M-203 6

CK Velan N207M3R 1500

ATTACHMENT II Working Design Conditions operating

  • Safety Designator Manufacturer Model Type - Size Press Temp Press Temp Pressure Factor SYSTEM: CLEANUP WP/OP

_ 3"-2(77 M3 Edwards 3"-Check 1500 850 3255 450 1350 2.41 O

3"-116 Chapman Fig 903 3"-Globe 900 850 2130 150 1350 1 58 3"-116 Chapman Fig 903 3"-Globe 900 850 2130 150 1350 1.58 3"-10 Chapman Fig 900 3"-cate 900 850 2130 150 1350 1.58 CV h0h3 BS&B 70-14-3DRT 3"-Control 900 850 2130 150 1350 1 58 CV 4042 BS&B 70-14-3DRT 3"-Control 900 850 2130 150 1350 1 58 3"-107M3 Edwards 3"-Angle 1500 850 2955 550 1350 2.19 3"-107M3 Edwards 3"-Angle 1500 850 3255 450 1350 2.h1 CV ho91 Worster h46YN 1 5"-Ball 2000 150 2000 150 1350 1.48 CV 4092 Worster hh6YN 1 5"-Ball 2000 150 2000 150 1350 1.48 CV ho93 Worster 446YN 1.5"-Ball 2000 150 2000 150 1350 1.48 3"-107M3 Edwards 3"-Angle 1500 850 2955 550 1350 2.19 CV hoho BS&B 70-18-1BF2f 1.5"-Control 1500 850 3550 150 1350 2.63 CV 404h BS&B 70-14-3DRT 2"-Control 1500 850 3550 150 1350 2.63 CV h045 BS&B 2"-Control 1500 850 3550 150 1350 E.63 CV 4047 BS&B 70-14-3D 2"-Control 1500 850 3550 150 1350 2.63 e CV 4114 BS&B 70-14-3DRT 2"-Control 1500 850 3550 150 1350 2.63 Demin H2O to CU 2"-Check 150 Demin H O to CU 2"-Globe 150 2

CV 4039 BS&B 70-11-3D 3"-Control 1500 850 3550 150 1350 2.63 Inlet to Reg Hx B 3"-Check 150 o

SYSTEM: REACTOR RECIRCULATION Min MO-No03A Chapman 24"-Motor 1765 615 1765 550 1350 1 31 Mo-Noo3B Chapman 24"-Motor 1765 615 1765 550 1350 1 31 MO-No01A Chapman 20"-Motor 1765 615 1765 550 1350 1 31 8

e88We a era 8 Weahe

  • Safety Factor =

Operating Pressure

?

ATTACINENT II (Contd)

Working Design Conditions operating

  • Safety Designator Manufacturer Model Type - Size Press Temp Press Temp Pressure Factor SYSTDI: REACTOR RECIRCULATION (Contd)

Mo-NoolB Chapman 20"-Motor 1765 615 1765 550 1350 1 31 Min A

Mo-Noo2A Chapman 5"-Motor 1765 615 1765 550 1350 1.31 Mo-Noo2B Chapman 5"-Motor 1765 615 1765 550 1350 1.31 Mo-Noo6A Allis-Chalmers 20"-Butterfly 1765 615 1765 550 1350 1.31 Mo-Noo6B Allis-Chalmers 20"-Butterfly 1765 615 1765 550 1350 1 31 SYSTEM: STEAM DRUM W-5000 Crosby 3M26 3"-Relief 2500 850 4925 550 1350 3.65 RV-Sool Crosby 3M22:

3"-Relief 2500 850 4925 550 1350 3.65 RV-5oo2 Crosby 3M26 3"-Relief 2500 850 4925 550 1350 3.65 RV-5003 Crosby 3M26 3"-Relief 2500 850 4925 550 1350 3.65 RV-5045 Crosby 3M26 3"-Relief 2500 850 4925 550 1350 3.65 RV-Sok6 Crosby 3M26 3"-Relief 2500 850 4925 550 1350 3.65 Spare Crosby 3M26 3"-Relief 2500 850 4925 550 1350 3.65 SYSTD4: CONTROL rod DRIVE Pacific 2"-Globe 1500 850 3550 150 155o 2.29 Vogt 2"-Gate 1500 850 3550 150 1550 2.29 Ret to CU Demin Powell 2"-Check 1500 850 3550 150 1550 2.29 Ret to Rx C"-Check 1500 850 3550 150 1550 2.29 SYSTDh CORE SPRAY MO-7061 Powell 4"-Gate 1500 850 2955 550 1350 2.19 4"-214 Chapman Fig 923V 4"-Check 900 850 1775 550 100 17.75 Mo-7051 Powell 4"-Gate 900 850 1775 550 100 17.75

  • Safety Factor =

essure at operaMng Temperature s

operating Pressure

3 AT"rACHMENT II (Contd)

Working Design Conditions Operating

  • Safety Designator __

Manufacturer Model Type - Size Press Temp Press Temp Pressure Factor SYSTEM: BACKUP CORE SPRAY Min

^

h"-207 Anchor 4"-Check 1500 850 3415 300 100 34.15 MO-7070 Anchor 4"-Gate 1500 850 3415 300-100 34.15 MO-7071 Anchor 4"-Gate 1500 850 3415 300 1350 2 53 SYSTEM: EMERGENCY CONDENSER M0-7052 Powen 6"-Gate 1500 850 2955 550 1350 2.19 MO-7053 Powen 4"-Gate 1500 850 2955 550 1350 2.19 MO-7062 Powell 6"-Gate 1500 850 2955 550 1350 2.19 Mo-7063 Powell 4"-Gate 1500 850 2955 550 1350 2.19 SYSTEM: SHUTDOWN MO-7056 Powen 8"-Gate 1500 850 2955 550 1350 2.19 MO-7057 Powell 8"-Gate 900 850 1775 550 1350 1 31 MO-7058 Powell 8"-Gate 1500 850 2955 550 1350 2.19 e

Mo-7059 Powen d"-Gate 900 850 1775 550 1350 1 31 SYSTEN:

POISON 3"-2W Chapman 1523V 3"-Check 1500 850 2955 55o 1350 2.19 3"-2W Chapman 1523V 3"-Check 1500 850 2955 550 1350 2.19 CV 4050 BS&B 70-14-3DRT 3"-Control 1500 950 2955 550 1350 2.19

  • Safety Factor = Design Pressure at Operating Temperature Operating Pressure

k ATTACHMENT II (Contd)

Working Design Conditions operating

  • Safety Designator Manufacturer Model Type - Size Press Temp Press Temp Pressure

' Factor SYSTEM: FEE 1 WATER Min

  • '*\\

CV hooo Bailey Motors VJ233B-DHQOW lo"-Control 900 '850 2000 boo 1780 1.12 EP Heater Isol Power lo"-Globe 1500 850 3330 400 1780 1.87 3-Way Chapman 1533 lo" x lo" x 8" 1500 850 3330 400 1780 1.87 lo"-207S Edwards lo"-Check 1500 850 2955 550 1780 1.66 lo"-lo7S Edwards 7506Y lo"-Stop Check 1500 850 2955 550 1780 1.66 CV hol2 BS&B 2"-Control 1500 850 3330 hoo 1780 1.87 SYSTEM: MAIN STEAM Mo-7067 Powell lo" 1500 850 2955 55o 1350 2.19 Mo-7050 Powell 12"-Gate 1500 850 2955 550 1350 2.19 M8sure a era empe M ure

  • Safety Factor = Des operating Pressure

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