PetroChem & Power This information is proprietary and confidential to Greene, Tweed. Redistribution is forbidden without consent of Greene, Tweed. Salem

PetroChem & PowerThis information is proprietary and confidential to Greene, Tweed. Redistribution is forbidden without consent of Greene, Tweed.

1

Salem and Hope Creek Nuclear Generating Stations


2

Presenters …..

Presented August 2013 by:– Gene Delp – PSEG– Matthew Palucci – Greene, Tweed & Company

Updated Presentation – January 28, 2015– Greg Gedney, Greene Tweed – Pump Segment Manager– Jenna Fitz – Greene Tweed – Field Applications Engineer


3

PSEG Nuclear – Salem and Hope Creek

Second largest site in country– Approximately 3,575 MWe– Enough electricity for ~3 million homes

Each unit licensed for 60 years (license renewal completed)– Salem Unit 1 (PWR, 1180* MW) – August 2036– Salem Unit 2 (PWR, 1175* MW) – April 2040– Hope Creek (BWR, 1219* MW) – April 2046

Each unit on an 18 month refueling cycle– Spent fuel dry cask storage facility on property– Enough space for 200 casks – all 3 units, 60 years

*Mean Annual Net Rating


WGID Function

Salem – PWR Steam Generator Feed Pump (4) Model 24 WGID – 171 Pumps put in service –

– Salem Unit 1: 1976– Salem Unit 2: 1980

Hope Creek – BWR Reactor Feed Pump (3) Model 17 WGID – 171 Hope Creek – 1988


5

WGID #11 Steam Generator Feed Pump


6

WGID #11 Steam Generator Feed Pump


7

Pump Cross-Section


8

Pump BOM


9

Breakdown Bushing Cross-Section


10

Bushing – Sleeve Detail


11

Detail Drawing w/ Greene Tweed Insert


12

Breakdown Bushing Carrier


13

Problem

Inherent start-up characteristic Temperature Gradient

Sealing System was Seizing & Galling


14

Effect

2 pumps for 100% power

With 1 pump; 55% power

Loss of revenue >$500K /Day


15

Breakdown Bushing Assembly


16

Solution

Replaced ‘old style hardened steel (410 SS ) breakdown bushing with WR®525

Companion sleeve (old style) was 410 SS, now Chrome Oxide Ceramic (plasma applied coating)


17

WR525 Spec Sheet


18

WR®525 Characteristics

Composite made of continuous carbon fiber and poly-ether-ether-ketone, or PEEK (70 percent carbon fiber by weight)

Made using fiber-placement technology Physical properties approaching that of steel in the direction of fiber

windings Radial coefficient of thermal expansion is less than 1/2 that of

carbon steel Recommended for temperatures up to 525°F (274°C) Utilized for both press-in and press-on applications (impeller rings,

case rings, bushings, floating and split components) Size ranges available up to 48" diameter by 48" long


19

WR®525 Manufacturing Process


20

Typical WR525 Applications

Bushings (throat, throttle, diffuser, stuffing box, etc.) Bearings (line-shaft, etc.) Sleeves and liners (shaft over-sleeves, thick CX part liners) Case and impeller wear rings (floating, press-in, press-on) Split parts (concentric, steady-rest bushings, stuffing box) Virtually any wear component found in a pump (horizontal and

vertical) can be upgraded to a composite material or metallic/composite assembly for increased pump performance.


21

Advantages of WR525 - Compared to Metallic Components

Nongall/nonseize—enables closer clearances Improved wear resistance in low specific gravity media Lower heat generation in momentary upsets (lower coefficient of

dynamic friction) Ductile nature of the thermoplastic composite materials assist in

dampening shock/vibration displacements Enhanced corrosion resistance through greater chemical

compatibility Sacrificial when severe upset conditions are unavoidable


22

WR525 versus carbon or Graphalloy

Impact resistance Lower wear under heavy load Greater abrasion and erosion resistance Increased thermal shock resistance Will not fracture during installation Can be used under tension as well as compression


23

Independent ASTM G105 Test


24

Mass Loss Comparison of All Samples


25

Teamwork

Teamwork– PSEG requested the pump upgrades– Flowserve (OEM) provided full cooperation

Worked with Flowserve team at Phillipsburg, NJ

Greene Tweed, Flowserve, & PSEG jointly redesigned breakdown bushing, eliminating multiple groove labyrinth

Maintained original running clearance (.010” -.012”)


26

Performance

Physically performing – constant leak-off (has been reduced) the mixed leak-off is controlled at 140°F

The more leak-off there is; one must inject more water to maintain the 140°F

The first 18 month cycle – the controlling temp. never got above 125°F

Injection valves - injecting miscellaneous condensate water into the breakdown bushings


27

WGID #11 – Control Temp Gauges


28

WGID #11 – Control Temp Gauges


29

Results

Results– No seizing and galling episodes

– Significantly less injection water and no leak-off drain system challenges

Runtime– 36 months to date with no incidents

– #11 pump was pulled at 18 months to inspect with no increase in running clearance

– Full cycle run time target – 6 Refuel Cycles (9 years) (NEIL)

– Runtime - #21 & #22 pumps 24 months run time without incident or increased leakage


30

Summary

Other equipment upgrades –

CWP – Circulating Water Pumps

SWP - Service Water Pumps– - Salem (12) & Hope Creek (4)– . In the process of upgrading bearings & wear rings to AR-HT from cutlass rubber (two complete)

Screen Wash Pumps- all 11 have been upgraded to AR-1 from rubber cutlass

Heater Drain Pumps- have upgraded 2 of 6 pumps to WR525. None running yet

Condensate Pumps- have upgraded 1 of 6 pumps to AR-HT. None running yet.

CWTWS(FLABA) – Travelling Screens


31

Pump References


Quick Response Capability (QRC)

28,000 sq ft – 2.600 m² Composite Centre Of Excellence

7,000 sq ft – 650 m² dedicated to quickly responding to WR / AR composite needs


33

Questions ???

Questions ???

Documents

PetroChem & Power This information is proprietary and confidential to Greene, Tweed. Redistribution is forbidden without consent of Greene, Tweed. Salem