ML19344D783

Supply of Improved Interference Fit Feedwater Spargers.

ML19344D783
Person / Time
Site:	Cooper
Issue date:	02/28/1979
From:	NEBRASKA PUBLIC POWER DISTRICT
To:
Shared Package
ML19344D782	List: ML19344D781 ML19344D783
References
IEB-80-02, IEB-80-2, NUDOCS 8004280186
Download: ML19344D783 (30)

Text

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Enclosure I  !

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E SUPPLY  !

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COOPER PLANT i t

i QUOTATION NO. 416-2151-HP1 I e

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, February 28, 1979  :

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, s TABLE OF CONTENTS  ;

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• Section Title r I Scope of Supply i r

II General Electric Responsibilities ,

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III Nebraska Public Power District Responsibilities l

' l IV Price Schedule [

v V Terms and Conditions

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SECTION I SCOPE OF SUPPLY General Electric will provide Nebraska Public Power District the hardware, certain specific software, support and consulta-tion services to replace installed hardware with improved interference fit feedwater sparger assemblies.* This quota-tion has the following principal elements:

• Nozzle Prereouisite Software General Electric will provide the required engineering documentation to support nozzle clad removal and vessel modification.

• Hardware General Electric will provide improved interference fit feedwater sparger assemblies. Some final field fabrica-tion will be required at the time of installation.

• Instructions General Electric will provide instructions (and speci-  ;

fications as applicable) for replacement of installed spargers and noz'zle/ safe end modifications.

• Consultation At Nebraska Public Power District's request, General Electric will make consultants available to support work scope, contingencies, or changes, as they may arise.

The proposed scope of supply is delineated by the following tasks and/or definitions:

• A separate quotation to supply clad removal, specialty tooling, and installation services will be provided by General Electric through its Installation and Service Engineering Divi-sion.

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A. Nozzle and Sparger Prerecuisite Software f

. Certain identifiable engineering documentation will be k,- required to support clad removal and vessel modifica- i tion. General Electric will provide the following:

1. Reactor Pressure Vessel Nozzle Certified Design Specification This document provides the functional and engineer-ing requirements for feedwater nozzle and safe end  !

modification. In the context of the proposed work scope, this is the controlling document which modi-fies the original reactor pressure vessel design '

specification for the feedwater nozzle and safe end.

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2. Field Disposition Instruction (FDI)

This document provides the requirements for removal of installed hardware, clad removal, safe end ma- '

chining and installation of the improved design i feedwater sparger.

3. Reactor Pressure Vessel Modification Drawina This drawing defines the modifications to be per-formed on the feedwater nozzle specifying toler-ances and surface finish.

4. Nozzle and Safe End Stress Analysis Report l Stress analysis is documented for the modified feed- ,

water nozzle and safe end in a certified stress report. Analysis is required to demonstrate con-formance with the ASME Code (Section III), year and addenda to be established prior to the start ,

of work. The code stress analysis (primary, _second- -

ary, and fatigue) shall be performed for the maximum component design life capability. No ASME code ,

stress report is required .for the feedwater- sparger assemblies.

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B. Hardware General Electric will provide improved design interfer-(]' ence fit feedwater sparger assemblies. The design char-acteristics are discussed below. (Figures I-1, I-2, and I-3 depict the design conceptually.)

1. Forged " Tee"-Headers The forged " tee" section is attached (welded) to round pipe header arms, bent to the curvature of the reactor pressure vessel.

2. Converging Nozzles Top exit converging nozzles, welded to the header .

arms, distribute feedwater flow radially into the vessel.

3. Attachment Brackets '

Sparger clevis attachment brackets (bolted and welded to the headers during installation) phy-

- sically engage the existing reactor pressure vessel brackets with a pin.

4. Transition Section A transition piece is joined (welded) to the forged

" tee" and weld " prepped" for joining to the thermal sleeve. The sparger subassembly (" tee", header /

elbow and bracket) is solution anneal heat treated prior to shipment to the site.

5. Triple Wall Concentric Thermal Sleeve Subassemb1v This subassembly is shipped to the site with the two seal surfaces fully machined. It only needs to be trimmed to lengtP (to accommodate as-built dimen-sions) and weld prepped for attachment (welding) to the sparger subassembly. It has the following de-sign characteristics:

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a. Two machined seal surfaces (primary and sec-ondary) provide clearance and interference

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fitup when installed. Each seal surface has a spring-loaded piston ring retained in a pre-machined groove.- Installed, the piston ring provides an additional mechanical seal. Re-liance on this seal is not required in the stress analysis. The design provides for the major pressure drop to be sustained by the primary (outboard) seal, while the secondary (inboard) seal acts as a bypass flow barrier.

Leakage past the primary seal is acceptable and provided for in the design of the hardware.

The primary seal surface is not designed as a true interference as is the case with the sec- '

ondary surface.

b. Machined slots in the middle thermal sleeve provide a flow path for leakage, past the s primary seal. All such flow is channeled in a manner which insulates the colder.feedwater from the warmer reactor pressure vessel.

c. A tuning fork-like configuration separates the concentric thermal sleeves, maintaining their separation. In addition to the thermal sleeve-forged " tee" field weld, the mid and outer con-centric thermal sleeves are attached in the field by Purchaser's installer.

Completion of fabrication (including installation) is the responsibility of Nebraska Public Power District.

Final field fabrication (assembly of hardware) is contingent upon as-built dimensional data obtained subsequent to nozzle / safe end machining. Accordingly, j the thermal sleeve length will-be supplied oversize for l necessary trimming and weld prep.

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Field fabrication and installation of the sparger and

, thermal sleeve subassemblies are addressed in the in-(-

stallation instructions described in the following paragraphs of this proposal.

C. Instructions Instructions, delineating conduct of work, and (where necessary) specifications will be provided prior to shipment of hardware. The delivery schedule will con-sider Nebraska Public Power District's installers rewriting these instructions into site-specific pro-cedures. Instructions to be provided will encompass the following broad categories:

• Material and processes

• Removal and replacement of spargers

• Clad removal and safe end machining

• Nozzle / safe end examination

• As-built measurements

• Thermal sleeve machining

• Attachment of thermal sleeves

• Contingencies Site-specific conduct of work (procedures) is beyond the scope of the instructions provided as part of this proposal. Instructions prepared by General Electric shall be of a form which will enable the installer to prepare procedures, adding additional Quality Assurance /

Quality Control requirements as necessary. The instruc-l tions will typically contain, as a minimum, the following l elements:

• Mandatory requirements to be followed Details pertinent to the specific operation being performed I-5

• Sequential information (but not scheduling or '

checklists)

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• Contingency instructions Certain instructions may refer to requirements for specialty tooling. As its responsibility, General Electric, through its Installation and Service Engi-neering Division, will (at its option) offer to rent (lease), sell, or otherwise provide such scope as ne-cessary under a separate quotation. To provide more than a specification for such identified specialty ,

tooling is beyond the scope of this quotation.

l D. Consultation Upon the written request of Nebraska Public Power Dis-trict and subject to the availability of personnel, General Electric will provide consultants, under this quotation, on a time and material basis, to support Nebraska Public Power District or installer in matters ;

,_ beyond the defined scope of this proposal, including .

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SECTION II

., GENERAL ELECTRIC RESPONSIBILITIES Y

Upon receipt of a valid purchase order, General Electric will initiate its efforts to provide the scope of supply described in this quotation. Broad responsibilities for delivery are as follows:

A. Program Management General Electric will identify a cognizant San Jose Program Manager responsible for the Nebraska Public Power District / General Electric interface. As Program Manager, his responsibilities are delivery of proposed scope and any expediting required. All Nebraska Public Power District correspondence shall be processed through the local General Electric Installation & Service Engi-neering contacts who will act as the General Electric coordinator for the proposed scope of supply.

s. B. Schedule, General Electric shall' deliver the work scope in ac-cordance with the following target-schedule. Any Nebraska Public Power District requirements for sched-ule acceleration in advance of target date will incur

'added billable costs. Nebraska Public Power District will be apprised of the added costs upon consent by General Electric'to new target delivery dates. De-livery lead time is keyed A.R.O. (After Receipt of Order).

-1. Nozzle Prerequisite Software Scope A.R.O. (weaks)

Field disposition instruction 40 Vessel modification drawing 40 Stress analysis -45 Design specification. '45 s

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All nozzle prerequisite software are to be sub-

{] mitted to Nebraska Public Power District as Revision 0 - Final, for the specific plant iden-tified on the purchase order (Cooper Nuclear Station). -

2. Hardware Delivery of hardware (sparger headers and detached oversize thermal sleeves) vill be forty-five (45) woeks A.R.O.

3. Instructions Delivery of instructions will be completed forty (40) weeks A.R.O. i All instructions are to be submitted to Nebraska Public Power District as Revision 0 - Final.

C. Quality Assurance / Quality Control s

1. All work described in this proposal shall be per-formed in accordance with the General El'ectric BWR Quality Assurance Program as described in Topical Report NEDO-11209-04A.

2. The feedwater sparger assemblies are "not important to safety" nor subject to the provisions of the ASME Code, however, a Product Quality Certification (PQC) shall be provided by General Electric as the primary quality assurarce record.

The stress analysis of the final machined configur-ation is the onl'y safety related item. It will be

• performed to all the-provisions of the applicable ASME Code.

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3. Nebraska Public Power District' access requirements i

(} for audit and witness of inspection points for '

supplied equipment and services shall be' arranged upon request, at mutually agreeable terms. .

4. All General Electric work to be performed on Neb-

• raska Public Power District's site, which is or may become part of this proposal shall be under

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the cognizance of Nebraska Public Power District's Quality Assurance Program.  ;

5. The adequacy and accuracy of all Nebraska Public ,

J Power District supplied information is the responsi- '

bility of Nebraska Public Power District in accord-ance with the Nebraska Public Power District design j control and quality assurance program.

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SECTION III NEBRASKA PUBLIC POWER DISTRICT RESPONSIBILITIES Nebraska Public Power District shall be responsible for the performance, establishment, and implementation, including all associated cost, of the following work scope as may apply. Specific responsibilities are as follcws:

A. Valid Purchase Order In addition to referencing appropriate General Electric terms and conditions for supply of hardware and software, the purchase order shall delineate the applicable codes, including addenda, for the nozzle clad removal and safe end machining. General Electric must have this inf6rma-tion prior to acceptance of Nebraska Public Power Dis- ,

trict's purchase order and the initiation of any design work.

i B. Program Management Nebraska Public Power District shall identify a cognizant Program Manager responsible for Nebraska Public Power

-Distric / General Electric interface. As General Elec-tric's co-equivalent Program Manager, all coordination >

shall be through this individual in Nebraska Public Power District's organization.

C. Satisfaction of Code Provisions - Software Nebraska Public Power District shall secure all neces-sary repair program approvals, certifications, witness, third party review, and applicable analysis of any software as required to satisfy requirements of codes pertaining to software and hardware provided by General Electric within the scope of this proposal. Where permissible by. code and where-requested by' Nebraska Public Power District, General Electric will act for

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b Nebraska Public Power District in such matters, after

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advising Nebraska Public Power District of added cost for this work.

L D. Satisfaction of Co(e Case 1804 Nebraska Public Power District is responsible for submittal of any topical reports required to support vessel modification and sparger replacement. For example, Nebraska Public Power District should obtain regulatory acceptance of Code Case 1804, if required.

E. Installation of Hardware and Field Fabrication The installation of all hardware, certain precision ma-  !

chining operations (thermal sleeves), as-built data ac- i quisition (following clad removal and safe end prepara-tion), and final weld assembly of the hardware are dis-cussed and proposed to be implemented by General Elec-  ;

tric through its Installation and Service Engineering Division in a separate quotation. Otherwise, the conduct of th(s work is the responsibility of Nebraska Public Power District. ~

t F. Site-Specific Procedures The preparation of site-specific conduct of work proce-dures are discussed and proposed to be implemented by General Electric in the separate Installation and Service Engineering Division field service quotation.

Otherwise, the conduct of this work is the responsibility

• of Nebraska Public Power District. .

G. Repair Program A re~ pair program as described by ASME Section XI must be filed ~with'the regulatory agencies, if required.

Preparation and submittal of this plan is a responsi-bility of Nebraska Public Power-District. .

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SECTION IV PRICE SCHEDULE k

A. Firm Price General Electric will provide Nebraska Public Power District with hardware and certain software for a firm price of one million ninety-two thousand dollars

( $1,092,000) .

The firm price is inclusive of the fol-lowing secpe of supply:

1. Nozzle Prereauisite Software Engineering documentation for each plant consist-ing of (a) the reactor pressure vessel design specification, (b) the field disposition instruc-tion, (c) the reactor pressure vessel and modi-fication drawing, and (d) the certified nozzle and safe end stress analysis for the maximum design life capability. Any additional software prepared by others and submitted to General Electric for review, will be billable to Nebraska Public Power s_

District in accordance with time and material rates in effect at the time and for the location in which the service is performed.

2. Hardware General Electric will provide four improved design interference fit feedwater sparger assemblies as

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described in Section I, Paragraph B (Hardware) of this quotation.

3. Instructions General Electric will provide the software scope.

defined.in Section I, Paragraph C (Instructions) of this quotation. The quoted firm price is for delivery of scope on a schedu'le delineated in.

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'Section II, Paragraph B (Schedule) of this quota-tion. Acceleration of schedule, if agreed.to by

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General Electric, will incur added billable cost.

B. Time and Materials Nebraska Public Power District-requested work, such as consulting services, will be performed on a time and material basis in accordance with published rates,

-including computer usage charges, at the time the service is performed. The following hourly rates for categories of individuals performing the work shall ,

apply.

1. Base Hourly Rates (1979 Rates)

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Principal Engineer or Project Manager S77.50 Senior Enaineer 62.50 50.50 Engineer s Engineer Assistant 33.00

2. Overtime *

a. Straight time (ST) means hourly rates that will apply for work performed during the first eight hours of an individual's working day on Monday through Friday, except observed holidays.

This may include travel time.

b. Overtime ' Rates : The following multipliers shall be applied to_ the above listed ' straight time rates:

(1) For. services performed _cotside'of em-ployee's normally assigned work schedule

'or on Saturdays:

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~ All Home Based Employees 1.15

b. All Field Service Personnel 1.50 (2) For services performed on Sundays or on holidays normally observed at the em-ployee's work location:

All Home Based Employees 1.30' All Field Service Personnel 1.50 C. Materials If Nebraska Public Power District and General Electric agree to the procurement of incidental material and/or rented equipment or tools and/or extraneous services in. ,

support of the services specified in this proposal, such elements shall be priced at cost plus twenty percent (20%). F D. Travel and Living In addition to the hourly rates for assigned personnel,.

Nebraska Public Power District shall be billed actual travel and living costs associated with performance of work.

Travel time is defined as that time. spent in travel from normal work headquarters to work location, travel while at the work location (to the work site, and return to rest location) and in travel back to headquarters.

E. Other Any taxes, transportation, property damage waiver, or licensing costs will be the responsibility of Purchaser.

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SECTION V

. TERMS'AND CONDITIONS The terms and conditions of this of fering will be in. accordance .

with'the Agreement Governing the Sale of Spare and Renewal Parts and Services by General Electric Company for Use in Nuclear Power _ Plants, between General Electric Company and Nebraska Public Power District dated ' February 1, 1971.

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