ML20126C054

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Forwards Responses to Questions on Design Rept for Sbo/ Electrical Safeguards Upgrade Project.Operations Manual Section H7.3, Integral Welded Attachment Evaluation Criteria... Also Encl
ML20126C054
Person / Time
Site: Prairie Island  Xcel Energy icon.png
Issue date: 12/11/1992
From: Parker T
NORTHERN STATES POWER CO.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20126C056 List:
References
TAC-M80659, TAC-M80660, NUDOCS 9212220336
Download: ML20126C054 (26)


Text

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I Northem States Power Company 414 Nullet Mall Minneapolis, Minnesota 55401 1927 Telephone (612) 330-5500 December 11, 1992 10 CFR Part 50 Section 50.63(c)(d)

U S Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555 PRAIRIE ISLAND NUCLEAR CENERATINC PIANT Docket Nos. 50 282 License Nos. DPR 42 50-306 DPR-60 Reply to Questions on Design Report for the Station Blackout / Electrical Safeguards Upgrade Project (TAC Nos. M80659/80660)

References:

1) Letter from Thomas M Parker, Northern States Power Ccmpany, to U S Nuclear Regulatory Commission dated November 27, 1990 titled " Design Report for the Station Blackout / Electrical Safeguards Upgrade Project"
2) Letter from Thomas M Parker, Northern States Power Company,to U S Nuclear Regulatory Commission dated December 23, 1991 titled " Design Report for the Station Blackout / Electrical Safeguards Upgrade Project," Revision 1 On November 27, 1990, we submitted for NRC Staff review the Design Report (Reference 1) for our project to add two safeguards emergency diesel generators, to upgrade the safeguards electrical distribution system, and to upgrade the #121 cooling water pump to become a swing safeguards pump.

In response to various requests for additional information from the Staff, we submitted for NRC Staff review Revision 1 of the Design Report (Reference 2).

Following submittal of Revision 1 of the Design Report, several conference calls were held between us and NRC Staff, both from Project Directorate and the Mechanical Engineering Branch. These calls resulted in more requests for additional information and informal responses. This letter is written to document the questions and our responses.

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I 921222o336 921212 PDR P

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USNRC Nodhern States Power Company December 11, 1992 Page 2 of 2 Please contact us if you have any questions related to these responses.

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lomas M Parker Director of Licensing Nuclear Generation c: Regional Administrator - Region III, NRC Senior Resident Inspector, NRC NRR Project Manager, NRC J E Silberg Attachments: 1. Response to Mechanical Engineering Branch Request for Additional Information

2. Translations Summaries --

Flexible Hose Qualification Tests

3. Powerflex EJMA Analysis of Stainless Steel Bellows
4. Excerpt from SACM Maintenance Manual DLTC 1605;-Includes Periodic Replacemen'. of Flexible Hoses
5. Prairie Island Operations Manual, Section H7.3; Evaluation Criteria for Integrated Welded Attachments l

l 1

RESPONSE TO MECHANICAL ENGINEERING BRANCH REQUEST FOR ADDITIONAL INFORMATION OUESTION 1:

Of the flexible hoses used on diesel generators D5 and D6, what is the nature of any braided metal wrapping?

RESPONSE TO OUESTION 1:

The flexible hoses are composed of elastomers reinforced internally with braiding, including metal wire. None have external braided wrapping.

QUESTION 2a:

How are the flexible hoses and bellows qualified for use in nuclear power applications?

RESPONSE TO OUESTION 2a:

These flexible hoses have been qualified for use on the engine by rigorous testing as documented in summaries of the utilized French standards, Attachment 2. The hoses are to be replaced at regular intervals, as discussed in response to Question 3. For the hoses in the most severe application, the replacement interval is at 50% of their qualified service life. Hoses on DS/D6 are of same basic design and two manufacturers have been used in all Soci6ti6 Alsacienne de Constructions M6chaniques de Mulhouse (SACM) diesels in nuclear applications since 1977. They have provet. to be acceptable through many thousands of starts and hours of service without a known failure.

The expansion bellows are qualified through analysis and testing by the manufacturer, Powerflex. The primary analysis, Attachment 3, was performed in accordance with Expansion Joint Manufacturers Association (EJMA) Calculations (1985 Edition). This calculation standard is directly referenced for expansion bellows by ASME Section III., Paragraph ND-3649.1. Powerflex also performed a basic hoop strength stress calculation of the exhaust bellows in accordance with Section VIII, which showed the material stress at 1050* F to be less than 100 psi. In addition, Powerflex has pressure tested the bellows at 50 times operating pressure (5 times NSP's system design pressure) -they_have been 100% dye penetrant tested, and certified material test reports are supplied for the materials.

Movement of the exhaust bellows will be measured as part of the systen thermal expansion testing, to be performed in accordance with ASME/ ANSI OMa-1988, Part 7 ,- Requirements for Thermal Expansion Testing of Nuclear Power Plant Piping Systems, during initial engine start-up.

OUESTION 2b:

Are the exhaust bellows qualified for service at 900* F? What material type is used?

RESPONSE TO OUESTION 2b:

The exhaust bellows are made of stainless steel SA-240, Grade 321, which is

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s' Attachtw:t 1 Page 2 of 3 shown by Table UHA-23 of ASME Section VIII to be qualified at least to 1050*F, the material temperature used in the Powerflex hoop stress calculation discussed above.

OUESTION 3 What are the maintenance / replacement requirements for the flexible hoses?

Submit supporting documentation.

RESPONSE TO OUESTION 3 The hoses will be replaced on 5 and 10 year intervals, depending on the service, as delineated in SACM maintenance list, DLTC 1605, Attachment 4.

These recommended replacement intervals will be reflected in Prairie Island Preventive Maintenance procedures PM-3001-2-D5 and PM-3001 2-D6.

QUESTION 4 How does the engine vibration qualification data reflected in the SACM vibration analysis and factory testing compare with ASME/ ANSI OMa-19887 RESPONSE TO OUESTION 4 The differing nature of the data and its sources does not facilitate direct comparisons; however, a review of the test data shows the anticipated piping vibration to be within that discernable by present plant testing practices.

Pre-operational testing for on-engine piping and cooling water piping will include vibration testing in accordance with ASME/ ANSI OMa-1988, Part 3, Requirements for Preoperational and Initial Start-up Vibration Testing of Nuclear Power Plant Piping Systems.

OUESTION 5 Was the seismic spectra for plant structures, derived in accordance with Regulatory Guide 1.60 as stated-in the Design Report, used as input for the piping analysis?

EESPONSE TO OUESTION 5 w Fluor Daniel (FDI), the architect-engineer for the project has confirmed that the structural seismic spectra, derived in accordance with Regulatory Guide 1.60, Revision 1, was utilized as input to the piping stress analysis.

OUESTION 6 Are piping integral attachment welds analyzed in accordance with ASME Section III and Code Case N318?

RESPONSE TO OUESTION 6 The Exhaust Silencer contains the only intabral attachment weld on the SACM  ;

Attachment 1 Page 3 of 3 supplied systems. A review by FDI of the SACM stress analysis has concluded that the analysis of the attachment weld meet the requirements of ASME Section III, for class 3 systems. Since a detailed finite element analysis was applied, it was not necessary to invoke the simplified approaches of Code Case N318.

For integral attachments to NSP supplied piping, namely shear lugs, the analysis is performed in accordance with Section III, as delineated in Prairie Island Operations Manual Standard H7.3, Attachment 5. Procedure H7.3 has adopted methodologies, based on current studies, for the consideration of locally induced stresses from integrally welded attachments. The stresses calculated by these methodologies have been added appropriately to normal, upset and faulted pipe stress combinations in accordance with Section III.

Therefore, Code Case N318 was not adopted for this procedure.

OUESTION 7 Concerning the stress analysis of the exhaust piping, which was performed by FDI up to the SACM boundary at the bellows, shouldn't the analysis be continuous through the bellows to an anchor point?

RESPONSE TO OUESTION 7 The present model of terminating the stress analysis of the exhaust piping at the exhaust bellows is appropriate for the following reasons:

a. Spring constants representing the bellows were included in the pipe stress analysis at the end point of the piping, to appropriately model the reaction of the bellows on the piping system, and vice-Versa,
b. The bellows were designed, and the EJMA analysis was performed, with consideration of the deflections at-the pipe / bellow connection. The bellows analysis is discussed in the response to Question 2.
c. The components on the other side of the bellows from the piping-connections are equipment other than piping. One piece of equipment is the exhaust silencer which is represented as a. vessel, anchored to the building structure, and analyzed to ASME Section VIII. The other piece is the discharge of the turbocharger, which is rigidly connected to the engine, and is a non-piping rectangular to circular transition section covered by manufacturer's standards.

OUESTION 8 Revision 1 of the Design Report does not reference Standard Review Plan Sections 3.9.2 and 3.9.3, does the project comply with these sections?

RESPONSE TO OUESTION 8 Yes, and we will reference these sections in Revision 2 of the Design Report.

ATTACHMENT 2 Translation Summaries -- Flexible Hose Qualification Tests (5 pages)

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4 Report Summary: Report No. 850-LE-76 HB Flexible Hose - Aeronautic Construction October 15, 1976 Report of impulse pressure testing of flexible hoses performed in accordance with French military standard MIL H-8794.

--Hoses rated at 210 bar 1.

- All test specimens first subjected to a static pressure test at twice the-nominal design pressure for_.a period of 4 minutes. ,

- one batch then subjected to a 70: degree C oil bath for 7 days, _

Second batch subjected to 70-degree C air-for 7 days.

- The two batches then randomly segregated'into test groups which were subjected to the following impulse pressure tests:

- Hoses-bent 180 degrees, pressurized _to 210 bar then pumped up to 125% of this nominal design rating; this pressure cycle '

performed 200,000 times while in a 50 degree.C environment.

- Hoses bent 180 degrees, pressurized to 170 bar then pumped '

up .to 150% of the nominal _ design rating; this pressure cycle:

performed 100,000 times while in'a 50 degree C environment.

Report Summary: Report No. 851-LE Partial 2

-HB Flexible Hose - Aeronautic Construction April 22, 1976 Report of . pressure - testing of 1three batches of flexible . hoses 4 performed in accordance with French aeronautic standard AECMA-EN-2254, i

- Hose's rated at.20 to 70 bar

- All test specimens first subjected to'a static pressure tes at the nominal design pressure for a period 'of 5 minutes and then inspected for indication of elongation no greater than -2% and

+4%. Hoses-then repressurized at.the nominal pressure rating for a period of 5 minutesE-and then inspected for variations in volume to assure less--than 15% increase.

= _ __ _-_ ___-_-___ _ _ _ _ _ _ _ _ _ _ _

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  • Report summary: Report No. 851-LE Pqrtial 2 (continued):

- The three batches then randomly segregated into test groups which were subjected to the following pressure tests:

- The first batch of hoses pressurized to twice the nominal design pressure and hold for 5 minutes. Pressure then increased at a rate of 20 bar/second up to 70% of the design theoretical ruptura pressure and maintained for 5 minutes.

The hocos were then proscurized until ruptured to dratermino actual rupturo pressure. On average, the actual rupture pressure was found to be approximately double the thesrotical design rupture pror sure. ,

- Second batch of hoses subjected to a salt water solution (2.5%) for 5 minutes and then air dried with 60 degree C air .

for 25 minutos. This procedure repeated continuously for 7 days at the end of which the houcs were then pressure tested at to twice the nominal decign pressure and rupture tested the same as the first batch.

- Third batch segregated into two test groups; one group

, subjected to oil at 70 degree for 7 days and second group subjected to 70 degree air for 7 days. Both groups of hoses were filled with oil, cooled to minus (-) 50 degree C and maintained at this tenperaturo for 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />. While maintained under these conditions, the hose vero bent 180 degrees over various radius mandrals. The hoses were then pressure, tested to twice the nominal design prassure.

( Report Summary: Report No. 851-LE Partial 3 HB Flexiblo Hoso - Aeronautic Construction July 8, 1980 Report of pressure testing similar to that above in Partial 2 of flexible hoses performed in accordance with French aeronautic standard AECMA-EN-2254. .

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i Report Summary: Renort No. 851-LE Partini.4 i

i. lib Flexible Hoso - Acronautic Construction l

February 20, 1981 of 1 i Report of pressuro testing similar to that above in Partial 2  !

j ficxible hoses performed in accordance with French acronautic standard AECMA-EN-2254.

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Report No. 2756-LE-91 i Report Summarys i HB Flexibic Iloce - Aeronautic Construction l

July 24, 1991 i

i Report of pressure testing of flexible hosos performed- in accordance with French acronautic standards for the French Military I DGA Dofonso Ministry.

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Report Summary: Report No. 8 5 0-LE U PartiaJ_1 HD Flexible Hose - Aeronautic Construction

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Report of pressure testing of severhl batches of fisxibic hoses

performed in accordance with French aeronautic standard AECMA-EN-l 2254.

- Hosos rated at 0 to 20 bars.

- Test specimens first subjected to a static pressure test at the i nominal design pressure for a period of 5 T.inutes and then inspected for indication of clongation within design standard. .

Hoses then repressurized at the design nominal pressure rating l

for a period of 5 minutes and inrpected for variations in volume ]

j to assure less than 15% increase,

- The hoses then randomly segregated into three test batches l

which were subjected to the following pressure tests:

The first batch of hoses pressurized te, twice the nominal design pressure and held for 5 minutes. Presuuro then increased at a rate of 20bar/second up to 70% of the design theoretical rupture pressure and maintained for 5 minutes.. Thun the hoses were returned to o bar pressure and this test sequence repeated.

m The hoses were then pressurized until ruptured to determine-actual rupture pressure. On average, the actual rupture pressure was found to be approximately double the theoretical design rupture pressure.

The second batch of hoses subjected to a ralt vater solution (2.5%) for 5 minutes and the air dried wi.h 60'OC air for 25 minutes. This procedure repeated continuously f ot 7 days at the end of which hoses were pressure tested at twice the nominal design pressure and rupture tested the same as the first batch.

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The third batch of hoses segregated into 2 test groups; one group subjected to an oil bath at 70 0 C for 7 days and second group subjected to air at 70 Oc for 7 days. Both grcups of hosesThey. were then tested with oil for flexibility at low temperature.

were filled with oil, cooled to minus (-)40 O C and maintain'ed at the temperature for 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />. While maintained under these conditions, the hoses were bent 180 degrees over various radius l mandrels. The hoses were then pressure tested to twice (2) the nominal design pressure, i

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Report Summary: Report No. s51-LE Partini 4

' HD riexiblo Hose - Aeronautic construction i February 20, 1991 4

) Ecport of pressure testing of several batches of flexible hoses l performed in accordance with French acronautic standard AECMA-EN-i 2254.

.fones rated at 0 to 20 bars.

- Test specimens first subjected to a static pressure test at the nominal design pressure for a period of 5 minutes and then l.

inspected for indication of elongation within design standard. -

!!oses then repressurized at the nominal pressure rating for a i period of 5 minutes and inspected for variations in volume to assure less than 15% increase.

- The hoses were then randomly segregated into three test batches

which were subjected to the following pressure tests

The first batch of hoses pressurized to twice the nominal design pressure and held for 5 minutes. Pressure then increased at a rate of 20 bar/second up to 70% of the design theoretical rupture

pressure and maintained for 5 minutes.

i The hoses were then pressurized until ruptured to determine actual rupture pressure. The average rupture pressure was found

. to be approximately double the theoretical design rupture

pressure.

The second batch of hoses subjected to a salt water solution j (2.5%) for 5 minutes and then air dried with 600 0 air for 25 minutes. This procedure repeated continuously for 7 days at the end of which the hoses were pressure tested at twice the nominal

design pressure and rupture tested the same as the first batch.

The third batch segregated into two test groups; one group subject to oil at 700 C for 7 days and second group subjected to air at 70 0C for 7 days. Both groups of hoses were filled with oil; cooled to minus (-) 550 C and maintained at this temperature for 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />. While maintained under these conditions, the hoses were bent 180 degrees over various radius mandrels. The hoses' were then pressure tested to twice the nominal design pressure.

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ATTACilMENT 3 Powerfiex EJMA Analysis of Stainless Steel Bellows (10 pages) -

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Inside Dia = 711.2 mm Outside Dia = 764.8 mm Wall Depth (w) = 25.38 mm Pitch (q) = 17.30 mm No. of Ply = 2 Live Corro/ bellow = 11 Material Thk = 0.71 mm i Bellowe Material Spec = Stainlese Steel Spec 321S31

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tinterini & Deninn Conntantn uned in Cniculationa_;.

q/2w = .341 q/2.2((dp*tp) = .346 Cp = .75 Cf = 1.52 Cd = 1.51 I Younge Modulue (Bellown Eb) = 195.1E+03 N/mm' Bellowa Design Streco (hot) = 68 N/mm' Bellowo Design Strees (cold) = 130 N/mm' Deninn Datn *

.nnoe,a Total Axial Movement = 57.0 mm Lateral Deflection (+/-) = 13.0 mm Angular Rotation (+/-) = 0.0 Deg's Design Pressure = 0.1 Bar g Design Temperature = 550 deg C Centre Tube Length = 240.0 mm Snrinn Itaten -

Axial Rate / corr (FW) = '

6094 N/mm Axial Rate 277 N/mm Lateral Rate  : 411 N/mm liGYEment ner Corrunation -

Total Equivalent Axial Movement ( e ) = 4.06 mm (32.0 %)

Strennen  : S1* = 1 N/mm*

S2 = 1 N/mm' S3 = 0 N/mm" e S4 = 2 N/mm* (,35 x S4 = 1 N/mm")

S5 = 8 N/mm' S6 = 948 N/mm*~

ST = 957 N/mm*

  • Forcen Moments & Prennure Thrunt :

F = 15783 H V = 5343 H M0 = 0 Nm MY = 1662 Nm Pt = 4294 N Limitinn Denian Prennure Daned on Column Souirm (Pn) :

Pc = 6.9 Bar g Fatiane Life : No = -14426 cycles Form Jell 4

_ . ~ . _. _ . . . - . . _ _. _ __. _ _ _..-.-_ _ _ ._. ._ _ _.__ _ _._ _ . _ _ m_ - . - _ - _ .

5

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  • ..~  :

l THIS PRINT TO BE USED FOR JOB No: ONLY. l DATE OF ISSUE- l REGUISITION No: -

, 700.00 '

, CLIENT:- SACM DIESEL ~~

240.00 205.00 2100 CLIENT *S REF:- DLT e + e x g/5.Mf a.

E 1 DESIGN CRITERIA -

T MOVEMENT: 57nm AXIAL COWRESSION M 4

+/- 13m:n LATERAL

+

0 -

M)# r TEMPERATURE: 550 C PRESSURE- 0.02 Bar G l i

t TEST CRITERIA - 1.0 Bar G PRESSURE: 100 percent DIE PENETRANT '

NOTES: - (

ST.STL. NAMEPLATE TO BE '

WELDED ON

, SHIPPING DARS TACK WELDED i

TO FLANGE.2 .

I

-UOg.fiOGX8 -JilOci UO E i -

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~, p H700 nb - 2 PLY - 11 CORRUGATION BELLOWS ,

MATL- ST.STL. - 322 l L _'_ j J.

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JOINING SLEEVE ,

FLANGES - 700 nu - BS3293 CLASS 150 F/F

,- MATL: ST.STL. - 321 MATL: CARSON STL. - DS4360- 43A i

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eens. me m OETu 2VP29 R [ nNISt SEF SORT CON: AMMSACM si stJE: R700 TWIN UNTIED ASSDELY .e lDRG. No: B021/028

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  • GENERAL DESIGN SHEET

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POWERFLEX sheet or liertf ortl 1toatl, Waltharn Cross, IIertf orchhire. ENS ~TD DocN / MJ/7 g

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Form JE134

w y yR 9p - A: . y a# i,)ir 49 + y -

N GENERAL DESIGN SHEET - cm/nuanm

POWERFLEX snect of l IIertford Road, Waltham Cross, llertfordshire.1
N8 7TD Doc No. / yyf7 y, Subject : E.J.M.A. CALCULATIONS 1985 EDITION Date 19 th Sept 9 Client : SEllIOR TIFT St. sign gg ,

Cliant Ref : Ref P 0295 i

l Ec110.gn_.Denian Data

Inside Dia
711.2 mm Outcide Dia = 764.8 mm i

Wall Depth (w) : 26.38 mm Pitch (q) : 17.30 mm No. of Ply = 2 Live Corre/ bellow : 9

, Material Thk = 0.71 mm i Bellows Material Spec : Stainless Steel Spec-321S31 I i

liainrini & Denian Constantn uned in Cniculationn .

q/2w  : .341 g/2.2((dp*tp) = .346 Cp : .75 Cf : 1.52 Cd : 1.51  ;

Youngs Modulus (Bellows Eb)  : 195.1E+03 N/mm*

l Bellows Design Stress (hot) = 68 N/mm* l Bellowe Design Strees (cold)  : 130 N/mm*

l l

Design Data Total Axial Movement  : 30.0 mm Lateral Deflection-(+/-) 15.0 mm Angular Rotation (+/-) = 0.0 Deg's ,

Design Pressure  : 0.0 Bar g Design Temperature = 550 deg C Centre Tube Length  : 224.0 mm Sprina Raten t

- Axial Rate / corr (FW) = 6094 N/mm Axial Rate ': 339 N/mm Lateral Rate  : 633 N/mm tioygment ner Corrunation...:.

1otal Equivalent Axial Movement ( e ) = 3.92 mm (35.7 %)

S12annen .... L S1" = 0 N/mm*

. Si = 0 N/mm' S3  : 0 N/mm' Se = 0 N/mm* (.35 x S4 = 0 N/mm")

S' = 7 N/mm' S6  : 915 N/mm*

ST = 923 N/mm'

  • Eor;len Moments & Preneure Thrust :

I = -10153 N Y -= 9489 N 40  : . O Nm MY-  : 2547 Nm Pt = 059 N Limitina Denisrn Freneure Haned on Column Souirm (Pn) :

Ps : 10.2 Bar g Fatiane Life : No  : 17739 cycles rorm JE114

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7

. . . . I' -  :- ~

.y THIS PRINT TO BE USED FOR JOB No: ONLY. l DATE OF ISSUE: l REQUISITION No:

600.00 CLIENT:. -

SACM DIESEL -

224.00 163$00 N.00 CLIENT *S REF:- OLT BEGab c Cf3.cc4 E . .

E E DESIGt& CRITERIA:-

-^ ~'

MOVEMENT: 30mm' AXIAL COMPRESSION 7 E *

+/- 15mm LATERAL M -M TEMPERATURE: 550 C PRESSLVIE: 0.02 Bar G TEST CRITERIA:- 1.0 Bar G PRESSURE: 100 percent DIE PENETRANT NOTES: - ST.STL. NAMEPLATE TO BE WELDED ON s

SHIPPING BARS TACK WELDED (

TO FLANGES J01NING SLEEVE MATL: ST.STL. - 321 Bon ~ pour execulidn

._. ~~

7 SACM SEact, O.P.1210 R700 nb - 2 PLY - 9 CORRUGATION BELLOWS E2:54 L'utMcust cr'n l

MATL- ST.STL. - 321

~ '

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FLANGES - 700 nb'- BS3293 CLASS 150 F/F -

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s som coac woo.,ocs j- mus. es m TITLE: R700 TWIN UNTIED ASSEMBLY l DRG. No- BD21/030 1 .. . .. - . . - - - - .

4

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ATTACHMENT 4 Excerpt from SACM Maintenance Manual DLTC 1605; ,

Includes Periodic Replacement of Flexible Hoses I (2 pages)

I l

f 9 om -

+

i DIESEL EtJGitJES ltJSTRUCTIOt1 FAAtJUAL 4

1 3 fdAltJTEtJAIJCE DOCUMENT OLTC 1605 DATE: aug 90 ISSUE: A i

+.................................................................................................+

l l EVERY 5 f( AR$. (CONTINUATION t CENSET NOT AVAILABLE) l Paragraph j

+.....................................................................+............................

l . Inspect exhaust silencer l35176.E l 4 ...................................................................................................

l . lest control devices in control cabinet lSeeAbengosInstructions l

+..................................................................................................

lt l.Sampledamperstitconfluid l35175.C l

+.................................................................................................+

l Clean day tank l see fluor Daniel instr. l 4..................................................................................................

l.Cleancoolantheaters l35179.C l

..................................................................................................+

l Clean oll/ coolant heat exchanger bundle (if necessary) l35179.E l

......................................................................+...........................+

) l . Clean preheating eachanger bundle l 3 5 1 7 9.G l

......................................................................+............................

l - Clean air cooler bundles (alr side, coolant side if necessary) l35179.T l

......................................................................+............................

l-Cleanhydraulicgovernorheatexchanger l 3 5 1 7 9.H l

......................................................................+...........................

l.Exchangecylinderhead l351710.A l . Exchange recipretating assembly l 3 51710 8 l j +..................................................................... ...........................+

l.ExchangeIlner l 3 5 1 7 10 C l

+.....................................................................+...........................+

l . Exchange electric pumps l see W instructions 4 2 l

................................................................................... .............+

l . Exchange fuel feeding driven pump l3517118 l

......................................................................+...........................+

i l . Exchange LT cooling thermostatic valve (sensing element checking) l 3 5 1 7 11.G l l . Exchange NT cooling thermostatic valve (sensing element checking) l 3 5 1 7 11.G l

+..................................................................................................

4 4

l . Exchange tube oil thermostatic valve for sensing element check. l351711.H l l.Exchangelevelcentro11ers l35173.H l l . Replace 0. rings of fuel oil filter valve l35178.H l i

+..................................................................................................

l - Exchange lube oil filter for overhaul l 3 5 1 7 8.J l

+..................................................................................................

l . Replace flexible hoses on preheating and prelube circuits l l

......................................................................+..............'.............+

35 si ms cocuuta mnm c, sa c<sa, ouww cnum mwsmom maam uu w cw couwmn

1 DIESEL EtJGitJES s itJSTRUCTIOt1 MAtJUAL i

3 MAINTEtJAf4CE l DOCUMENT OLTC 1605 OATE: aug 90 ISSUE: A i

1 i

e.....................................................................s...........................s l EVERY 10 YEARS : (GEN $ET IN DEClENNAL OVERHAUL) l Pa#agraph l

  • .................................................................................................+

l . Check generator windings j see J.S. Instructions l 3

......................................................................+............................

l . Check get.erator bearing shells l see J.S. Instructions l

..................................................................................................+

i l . Clean day tank l see fluor Daniel instr. l s.....................................................................*...........................+

l l . Repl&ce coup 1tng elastic elements l 3 5 1 7 10 0 l j ..................................................................................................+

l Replace aged electrical components ] see Abengoa.NE! Instr. l

+..................................................................................................

l . Exchange speed and power governing components l 3 5 1 7 4.A l

+.....................................................................+............................

l . Replace exhaust silenrer (if necessary) l 3 5 1 7 6.E l

  • .....................................................................s...........................e l . Exchange diesel engines for workshop overhaul l l

+.................................................................................................+

iI j . Exchange auxillaries desks for workshop overhaul l l l Replace air intake filter l l l

l . Replace all flexible hoses l l

..................................................................................................+

4

  • .g' 35 n us ocemes mem es u u e esa. omme onusemsu,ssm ec ==oeto a v s A me e cemet

1 I

I s 1 l

a ATTACRMENT 5 Prairie Island Operations Manual, Section H7.3; Evaluation Criteria for Integrated Velded Attachments (21 pages) i l

1 i

l ,

l i

l l

l l