oil & gas interactive presentation v1, 6th july 2015

MOTOR & GENERATOR – SERVICE & MANUFACTURE

About Us Services New Machines Case Studies Additional Material

© 2015, Parsons Peebles

Comprehensive

Service, Upgrades

& Bespoke New

Machines for the

Oil & Gas industry

Company Profile

Proud Heritage

Rosyth Facility

AccreditationsValue Proposition

Markets Sheffield Facility

About Us


Services New Machines Case Studies Additional Material

A manufacturer of bespoke motors and generators with a well developed service offering

Headquartered in Rosyth, Scotland with full load test capability

Specialists in service and manufacture of “non-catalogue” electrical machines predominantly for the power, oil & gas and petrochemical markets

Unique capabilities in terms of offering of low starting current, low noise machines and tailored solutions

Largest installed base of any motor manufacturer in the North Sea

From January 2013 significant investment to grow the business from Clyde Blowers Capital

Responsive sales support for aftermarkets support


Company Profile

Proud Heritage

Rosyth Facility



About Us



Parsons Peebles strives to be the specialist electrical machine manufacturer and service partner of choice

To do this we provide our customers with - Superior solutions through leveraging of our IP,

proprietary processes and specifications- Quality of product through compliance, reliability and

availability- Best people to partner with in terms of knowledge,

attitude and focus on delivering client value - Responsiveness through focus on turn-times, lead-times

and mobilisation

We work globally across various industries and are happy to extend our services to existing clients or forge close relationship with new partners

Headquartered in Rosyth - ideally located to support the North Sea


Company Profile

Proud Heritage

Rosyth Facility



About Us



Parsons Peebles have applications specific experience across various end user markets, focused on:

Offshore Oil & GasParsons Peebles has the largest installed base of any manufacturer in the North Sea - as such we’re well used to the provision of new machines and offshore services for the harshest of environments. We are also comfortable working to offshore standards and certification requirements.

Onshore Oil & GasWith expertise in hazardous area machines and other requirements for onshore oil and gas, Parsons Peebles are trusted in this sector.Our motors, generators and service offerings are utilised in petrochemical, refinery and oil transportation facilities globally.


Company Profile

Proud Heritage

Rosyth Facility



PowerFor conventional, renewable or nuclear power applications Parsons Peebles has extensive experience worldwide. We understand the needs of driven equipment in this sector whether they be pumps, compressors, fans or other key equipment. Likewise on the generator supply or maintenance side, we have the skills to power your process.

General IndustrialWe have new machine and service know-how across various general industrial sectors including water, marine, cement and mining.Our offerings can be tailored to the specific needs of your industry whether these be upgrades to reduce noise, lowering starting current or simply keeping your machines in optimum working condition.

About Us



Over 110 years experience in design and manufacture of electric motors and generators


Company Profile

Proud Heritage

Rosyth Facility



1898 1904 1969 1973 1989 2000 2013

ORIGINAL BUSINESS FORMED BY DAVID BRUCE PEEBLESBruce Peebles & Company Limited set up the Tay Works, Bonnington, Leith, Edinburgh

BRUCE PEEBLES - MAIN ELECTRICAL CONTRACTOR TO THE FIRST UK HYDRO-ELECTRIC SCHEME 1st commissioned in 1906 at Cwm Dyli in North Wales. Uprated in 1987 from 5MW to 10MW output

BRUCE PEEBLES INDUSTRIES MERGED WITH REYROLLE PARSONS, NEWCASTLERe-named Parsons Peebles Limited, Motor & Generator Division (including the C A Parsons factory at Witton, Birmingham, previously part of GEC)

AWARDED THE QUEENS AWARD FOR EXPORT ACHIEVEMENT

BECAME PART OF ROLLS-ROYCE INDUSTRIAL POWER

RE-LOCATED TO ROSYTH, SCOTLANDPeebles Electrical Machines Limited re-located to Wood Road, Royal Dockyard, Rosyth

PARSONS PEEBLES ACQUIRED BY CLYDE BLOWERS CAPITAL

2014

ACQUIRED PREFORMED WINDINGS

About Us



Rosyth site covers an area of 8,300 m2 including manufacture, assembly and test as well as offices for all support functions including design and engineering

Well situated for rapid access to N Sea customers and assets

Facility capability includes:- Main bay has an overhead lifting capacity of 63 Tonnes with further

lifting capacity in other areas of 2 x 25 Tonnes and 1 x 15 Tonnes- 2 gas powered drying ovens and a varnish dipping tank for

impregnation of stators and windings- Craven lathe with a capacity of 60 tonne and 7m long- Access within the group to all other manufacturing processes

(turning, milling, drilling, horizontal boring, CNC machining as well as laser and profile burning, rolling, folding and guillotine capabilities)

- Stamping booth for laminations / internal paint shop

One of the most comprehensive test facilities in Europe:- Provides direct full load testing- Capability at 50 and 60Hz up to 8MW for motors / 35MVA for

generators and voltages up to 15kV


Company Profile

Proud Heritage

Rosyth Facility



MAJOR NORTH SEA OIL FIELDS

ROSYTH

About Us



Preformed Windings Limited – Sheffield, UK- Can provide bespoke replacement windings for a wide variety of coils

Diamond Coils, Armature Coils and Concentric Coils - Our pre-production computer aided design capability and our

extensive database of coil winding specifications enables the speedy production of highly accurate coils

- Looping machines can handle the largest winding requirements- We produce formed coils on automatic shaping machines. By

insulating and pressing to the tightest tolerances, we are able to ensure the best fit within the stator slot which results in optimum performance and long life in service

- In-house checks include earth testing, tan delta, inter-turn and partial discharge tests. All our coils comply with international standards and meet the highest levels of performance

- The new facility (17,000 sq ft=90% Increase) will be fitted with the latest cutting, straightening, looping, shaping, taping and pressing machines and have been designed using advanced value stream mapping and lean principles.


Company Profile

Proud Heritage

Rosyth Facility



About Us



UKAS QUALITY MANAGEMENT SYSTEM: Now updated to ISO 9001: 2008

BASEEFA – ATEX QA Notification / IECEx QA Report- Certification No.- Baseefa ATEX 0805 for Explosive Area Equipment Design, Manufacture & Repair

AEMT - Association of Electrical & Mechanical Trades Certified Member

FPAL – Verify – Oil & Gas

UVDB – Verify – Power & Industrial

ISO 14001: 2004 Environmental


Company Profile

Proud Heritage

Rosyth Facility



Services


About Us New Machines Case Studies Additional Material

Service Based on

Comprehensive

Engineering Know-

How


Total Solutions Spare PartsField Services Workshop Services Rewind Services

Services



Parsons Peebles can conduct reactive maintenance to ensure rapid return to service if failure occurs or parts are required

Our total service solution offerings include:- Asset management- Long term maintenance contracts- Life extension programmes

Additionally we offer full on-site or workshop training to ensure your personnel optimise the operation of your electrical equipment

Custom Maintenance Solutions designed to directly align with our Customer Maintenance Strategies

From Simple Repairs to Sophisticated Asset Management Solutions on Parsons Peebles and all major 3rd party brands



Services



Whether on a offshore oil installation to an onshore refinery, Parsons Peebles field service personnel are dedicated to providing the best service, fast

We offer an extensive range of services including- Installation &

commissioning- Equipment surveys- In-situ rewind- Test & inspection (visual &

boroscopic)- Thermographic inspection- In-situ core flux testing- Tan Delta DLA testing- Onshore & offshore

capability (AEMT qualified)- Dynamic balancing

- Risk assessments- Insulation replacement &

repair- In-situ laser realignment- In-situ balancing- Purge system servicing- Cryogenic decontamination- Lubrication system service

health care- Heat exchanger servicing



Services



Additional workshop services include- Full load testing – direct load up to 8MW 60Hz- Noise & vibration analysis- Full rewinds- Dynamic balancing- Modification of bearing designs- Shaft replacements- Hazardous equipment recertification

However complex the repair or tight the deadline, Parsons Peebles will endeavour to provide a quality service to meet your needs



Services



Parsons Peebles has its own coil manufacturer, Preformed Windings, this offers us the following advantages

- Rapid response, coils in days not weeks- The ability to offer coils of all types e.g. resin-rich or VPI for any

machine brand- Precision fit, quality and coil life

Our experienced winders can rewind in-situ or if the machine is returned to Rosyth

Our OEM status enables us not only to offer replacement coils but also to upgrade these, e.g.

- To adjust coil drop to make coils easier to fit on site- To increase the copper conductor density leading to increased

machine efficiency- To enhance coil insulation hence longevity of life using the latest

tapes and insulators

Due to our full service capability we can also offer core repair or replacement if on rewind we uncover any other machine issues

Total Solutions Spare PartsField Services Workshop Services


Rewind Services

Services



Our value proposition for spares includes- Immediate and personalised response from our experienced team of

engineers and service professionals- A competitive service with deliveries tailored to your individual

requirements (including rapid response for stocked components)- Full manufacturer's warranty- A range of parts for other OEM equipment can be provided

Replacement parts for Parsons Peebles machines- Full history and traceability of all of the units manufactured in the

last fifty years- Full replacement parts can be provided on supply of serial number or

project reference- Covers all units badged with the PEEBLES name such as Bruce

Peebles, Parsons Peebles, and NEI Peebles- Latest technology and materials will be used so all parts are supplied

to highest quality

Intelligent packing and storage offering - Recommended spares held in storage for emergency use (strategic

service management)- Regularly inspected and stored in a dedicated facility for delivery in

24 hours, automatically replenished after use



New Machines


About Us Services Case Studies Additional Material

Bespoke Machines

with Specialised

Features Tailored

to Application


Design philosophy Made to lastMade to perform Made to fit

New Machines



Parsons Peebles have a rich pedigree in manufacturing motors and generators for special and unusual applications spanning over 120 years

Instead of modifying a standard design to suit a new application, we start with a blank sheet of paper and build the specification to exactly suit the requirements of the application, environment and client preference

With a comprehensive historical database of 1,000s of existing designs and their resulting test data, we are able to produce new, custom designs with an exceptional level of predictability, avoiding load compatibility and performance issues on completion of manufacture

Our new machines are highly robust due to their proven high integrity keyed-bar caged rotor construction



New Machines



Performance characteristic specifically engineered to suit the requirements of the application

Extensive range of enclosure, cooling, mounting and bearing options available

Area classifications include Safe, Exn A, Ex p, Ex e

Low starting current options (down to 270% FLC)

Low noise level options (Multi-MW machines down to 68d(B)A)

Packaged solutions available including VSD, soft start, switchgear and control systems

In house full load test facility to 8MW, 50 and 60Hz



New Machines



We offer mechanical interchangeability with existing irreparable or obsolete plant, including replacing old machines with imperial dimensions

Increased outputs available in existing mechanical fixings and size envelope

Reverse engineering of existing assets where machine format and performance must be duplicated exactly

Site surveys available to assess existing machines for replacement (including dimensional and performance surveys)

All terminal points made to match existing interfaces – plug and play



New Machines



Typical design life of 40 years

Unsurpassed quality ethic in all stages of design & manufacture

Extensive reference list of Parsons Peebles machines still in operation after 30-40 years

Proven history of supreme reliability in the most arduous and hostile applications and environments



Case StudiesNew Machines


About Us Services Additional Material

A Track Record of

Solving Problems

& Maximising

Machine

Availability


Power Upgrade & Hybrid Machine

Solution

Rapid Generator

Rewind

Overhaul, Test & Enclosure Mods to 3rd Party Generator

Drop in Replacement

Compressor Drive

Upgraded Drop in Seawater

Injection Drives

RCA on Bearing Failures

Case Studies


About Us Services New Machines Additional Material

Industry: Offshore Oil – Production PlatformCustomer / Location: Talisman / Fulmar Platform North Sea , UKCategory: Services – Field services / Workshop servicesMachine Type: Compressor drive


Situation- The original Borsig compressor drive motor (supplied in 1979) had been inspected and

cracks were found in the rotor frame. As this machine was production critical it was decided that it was not cost effective to remove and repair due to the estimated time out of operation.

Challenge- Build and install a new drop in replacement motor to reduce expensive and unexpected

platform shutdown. The new motor was made to industry standards and supplied to the client in time for their planned annual shutdown to minimise the impact on production. Additionally development of a detailed change out procedure to allow for the location , weight and size of the machine in question.

Parsons Peebles Solution- Replacement machine was specified to have minimum interface changes with original- Detailed offshore survey was carried out to carry out risk assessments and develop

scope for change out- New machine was assembled, tested then dismantled to allow for transport and

installation in stages


Solution

Rapid Generator

Rewind


Drop in Replacement

Compressor Drive


Injection Drives


Continued on next slide

Case Studies



Industry: Offshore Oil – Production PlatformCustomer / Location: Talisman / Fulmar Platform North Sea , UKCategory: Services – Field services / Workshop servicesMachine Type: Compressor drive


Parsons Peebles Situation Continued- Plan was developed in conjunction with various disciplines in customers organisation to

ensure smooth and speedy turnaround- Project was successfully executed within a tight time frame (4 weeks)

Customer Benefit- Machine upgrade from EXN to EXP to comply with current legislation- Downtime minimised due to detailed planning and speedy execution- Parsons Peebles provided a ‘one stop shop’ for this turnkey offshore project. From

supply of a bespoke replacement machine through scope development and execution of change out. This negated the need for any costly ‘tier 1’ contractor involvement and limited the requirement for management of change processes. This saved the customer in the region of £500k excluding any costs for lost production.


Solution

Rapid Generator

Rewind


Drop in Replacement

Compressor Drive


Injection Drives


Case Studies



Situation- Parsons Peebles were requested to evaluate the potential to obtain increased output

power from an existing pump drive motor. Thereafter Parsons Peebles were requested to evaluate the feasibility of supplying a new-build strategic spare which could be used at two different locations on the same installation

- While the units are similar they were for completely different applications, one a Pump Drive the other a Compressor Drive with other discrete differences in the configuration of the machines

- The Customer’s intention being to potentially use the hybrid to temporarily replace the existing machines to then avail removal of same for overhaul in a shore based workshop while maintaining Pumping and Compression production capability

Challenge- While the units are similar they were for completely different applications, one a Pump

Drive the other a Compressor Drive with other discrete differences in the configuration of the machines

- The new machine to be utilised as a spare for the existing machines to permit removal of the existing machines for maintenance overhaul at a shore based workshop whilst maintaining Pumping and Compression capability for production

- To evaluate the existing Crude Oil Export Pump Motor design for a higher output power in the existing machine or a revised design in the same footprint

- To evaluate the provision of a single New Build strategic spare at the higher rating which could be utilized in place of both the Pump Drive and the Compressor Drive machines

Industry: Offshore Oil – Production PlatformCustomer / Location: Conoco / North Sea, UKCategory: New Machines - UpgradesMachine Type: Motors driving crude oil export pumps & compressors



Solution

Rapid Generator

Rewind


Drop in Replacement

Compressor Drive


Injection Drives



Case Studies



Challenge (continued)- To evaluate the interface with all existing facilities, main cabling and instrumentation

cabling on the two units to be accommodated by new single machine Parsons Peebles Solution

- Design evaluation shows the requested higher power can be accommodated- While the two existing machines have differently configured shaft extensions one

tapered with oil pressure assembly and one parallel – the solution will be to provide one parallel extension with new couplings for each application required

- The main supply cabling is on the same side of the two machines but at different entry angles differing by 90 degrees – to be accommodated by common neck and 90 degrees change facility

- The main bearings on the two machines are the same diameter but differently cooled –one with circulating oil the other with a water cooling arrangement – a hybrid bearing will resolve

- Both machines are water cooled but have their supply and return headers on opposite sides of the machine – pipework management to resolve (example below)

- The instrumentation terminal box cabling connections are on different sides of the two machines – cable and box management will resolve

Customer Benefit- Savings of £300k by procuring 1 critical spare machine vs 2 machines- Additional savings by matching existing electrical/mechanical footprint exactly- Production losses limited due to rapid reconfiguration of spare machine and approved

RAMS in place in the event of failure

Industry: Offshore Oil – Production PlatformCustomer / Location: Conoco / North Sea, UKCategory: New Machines - UpgradesMachine Type: Motors driving crude oil export pumps & compressors



Solution

Rapid Generator

Rewind


Drop in Replacement

Compressor Drive


Injection Drives


Case Studies


Original Grease Routings


Industry: Offshore Oil – Production PlatformCustomer / Location: BP / North Sea, UKCategory: Services – Field services / Workshop servicesMachine Type: Motor driving a main oil line pump


Situation- Parsons Peebles Service assistance requested to attend on an off-shore installation to

inspect and replace suspect bearings on two M.O.L. Pump Motors- The motors, a series of three vertical pump drive motors originally designed and built by

NEI Peebles, have had a history of bearing problems with incorrect bearings fitted by others

Challenge- Bearing issues on two M.O.L. Pump Motors result in risk of Platform shut down.- Continuation of failures resulted in a lack of confidence in reliability going forward- Urgent action required off-shore to inspect bearing assemblies and wherever possible

replace the bearings and return the units to production

Parsons Peebles Solution- Short term solution implemented by ensuring speedy bearing change out on 2 machines

and availability of spare components for quick turnaround should failures occur- Full failure RCA carried out by Peebles with client support- It was discovered that due to the pump operating dramatically below its design duty

point that the power required from the motor was approx 30% of design load- The original bearings were operating below the minimum limits of radial load resulting

in ‘skidding’ of bearings- Peebles carried out full re-design of bearing assemblies to suit the new load while

ensuring the integrity and certification of machine were unaffected Proposed Bearing Arrangement

Original Grease Routings


Solution

Rapid Generator

Rewind


Drop in Replacement

Compressor Drive


Injection Drives


Case Studies



SituationMachine had suffered with a history of cooler leaks and after a trip on start-up an inspection thereafter inside the machine revealed a major winding failure

ChallengeDue to the size, weight & location of the machine on the platform a detailed change out procedure had to be developed as the machine could not be removed or installed in one piece. Also a formal root cause analysis had to be completed and solutions implemented to ensure continued confidence in machine reliability

Operational ImprovementsMachine upgrades provide confidence in future reliability by eliminating the failure mode experienced. Platform generation exposure reduced with speedy execution of scope. Plan for regular service interventions introduced to identify & resolve potential issues before they arise

Parsons Peebles Solutions- Inspection of winding failure identified that a significant proportion of the core had

been damaged eliminating the possibility of rewinding in-situ- Detailed offshore survey was carried out in conjunction with incumbent lifting

specialists to carry out risk assessments and develop scope for the complex stator removal and re-installation

Industry: Offshore Oil – Production PlatformCustomer / Location: Britannia Category: New Machines - UpgradesMachine Type: 1 MW, 6.6 kV, 4 Pole, 60 Hz Generator




Solution

Rapid Generator

Rewind


Drop in Replacement

Compressor Drive


Injection Drives



Case Studies



Parsons Peebles Solution - Machine was receipted into our works where a replacement stator had been supplied

by peebles and was subsequently changed out with the failed stator- RCA identified that the historical cooler leaks were due to excessive corrosion of tubes- Coolers were upgraded to double tube design of titanium construction to eliminate

future leaks- Insulation system upgraded to include a ‘double dip & bake of the windings. This gives

improved protection and resistance to contamination- Plan was developed in conjunction with various disciplines in customer`s organization

to ensure smooth and speedy turnaround- Project was successfully executed within tight timeframe- Parsons Peebles provided full turnkey support to manage the execution of this project

Customer Benefit This negated the requirement for Britannia to procure expensive temporary power generation whilst providing the confidence of a fixed return to service date for the repaired machine

“… just want to thank you and your team for your support thus far. Clearly this is a big challenge for us and so your prompt and timely response to questions, provision of labour, procedures and materials is much appreciated. Please pass on my appreciation to your team and broader organisation.”- Jim Aston, Britannia Operator




Solution

Rapid Generator

Rewind


Drop in Replacement

Compressor Drive


Injection Drives


Case Studies



SituationThe existing LP sea water injection LSE motors on Scott platform had a history of winding failures and failed rotor bars resulting is costly downtime and lost production

ChallengeParsons peebles were approached to investigate the feasibility of replacing the 4 machines in the fleet with there own machines which have a superior keyed bar rotor construction to eliminate the reliability issues encountered. This study involved:-

- Full engineering design review- Offshore survey - Confirm motor as per drawing- Identify local restrictions to motor removal / installation- Details of instruments etc., not shown on general arrangement drawing

Parsons Peebles Solution4 machines were supplied that met the following criteria:-- Shaft centre line – match to existing- Holding down bolts, jacking, dowelling matched to existing Oil pipes – flexible- Main terminal box designed for “plug & play”- Terminal configuration & position, gland plate position all to match existing- Auxiliary terminal boxes – same position- Cooler pipes – same position



Solution

Rapid Generator

Rewind


Drop in Replacement

Compressor Drive


Injection Drives



Industry: Offshore Oil – Production PlatformCustomer / Location: Scott Platform / North SeaCategory: New Machines - UpgradesMachine Type: 6800kW, 2pole, 13.8kV Water Injection Pump Motors

Case Studies



Parsons Peebles Solution Continued- Replacement motor better match for existing duty.- Exceeded Nexen’s operational constraints - Full load test witnessed by Nexen - Motor ‘signature analysis’ – current, partial discharge etc. performed in parallel during

factory test

Customer Benefit- Typically a repair of one of the original units would be greater than £150k, the cost of

removal and reinstallation would be of similar cost. This does not include the lost production resulting from reduced sea water injection which would most likely be in multiples of the £100k

- This affords Nexen a saving of £500k per breakdown and the peace of mind of assured continued reliability of their assets and uninterrupted production

Industry: Offshore Oil – Production PlatformCustomer / Location: Scott Platform / North SeaCategory: New Machines - UpgradesMachine Type: 6800kW, 2pole, 13.8kV Water Injection Pump Motors



Solution

Rapid Generator

Rewind


Drop in Replacement

Compressor Drive


Injection Drives


Case Studies



Situation- This main generator on North Alwyn was originally supplied only as ‘desert rated’ due

to availability and urgent requirement of operator at the time but had been in operation for eight years in its North Sea offshore environment. The end user wanted us to fully assess the current condition and overhaul in line with findings

- The machine being of ABB manufacture, Parsons Peebles took on the upgrade project due to our experience with servicing third party equipment

Challenge- Originally the end user wanted us to fully assess the current condition, restore to ‘as

new’ condition and prove the machines mechanical & electrical integrity by performing a test on load. However on the strip down it was found that although the water ingress on the main machine was minimal there had been severe ingress & corrosion on the exciter due to it only being desert rated. It was requested that Parsons Peebles modify the machine to reduce future corrosion

Parsons Peebles Solution- The machine was returned to as new condition and load tested successfully within the

clients tight timeframe. The exciter sealing arrangement was upgraded to limit future water ingress

Customer Benefit- The Parsons Peebles exciter cover modification will allow this desert rated machine to

be more appropriately operated in an offshore environment without the severe water ingress previously experienced

Industry: Offshore Oil – Production PlatformCustomer / Location: Major UK Oil Company, North Sea , UKCategory: New Machines - UpgradesMachine Type: 25 MVA Generator



Solution

Rapid Generator

Rewind


Drop in Replacement

Compressor Drive


Injection Drives


Additional Material


About Us Services New Machines Case Studies

Dedicated to

Supplying Superior

Quality Products &

Services


About Clyde Blowers Capital

UK North Sea

Experience

Detailed Motor & Generator Test

Capability

Keyed-Bar Cage Rotor

Construction

Matching Existing

Interfaces

Resin Rich vs

VPI

Customer Testim-onials

Additional Material



Clyde Blowers Capital is a private equity company specialising in engineering businesses with a current portfolio including companies manufacturing gears, motors, pumps, hydraulic components and soot blowing equipment

Managed by a team of 26 based in Glasgow, Beijing and Zurich

Currently managing 8 platform investments

Specialises in sustainable growth for high potential business with operational support to extend their offering, improve their processes and extend global reach



UK North Sea

Experience


Capability


Construction

Matching Existing

Interfaces

Resin Rich vs

VPI


Additional Material



Parsons Peebles has the largest installed base of any manufacturer in the North Sea

We are experienced in managing quick turnarounds and working to offshore requirements and certification

Our site personnel are qualified for working offshore and we specialise in in-situ work such as rewind, refurbishment and recertification

When required or for more extensive work we can return equipment to our Rosyth facility

At Rosyth we can provide the peace of mind of full load testing to ensure all electrical equipment performs as expected on return to asset

Customers we have a proven pedigree with include all the oil majors - Nexen, Chevron, Shell, BP, Total etc.


Parsons Peebles Installation


UK North Sea

Experience


Capability


Construction

Matching Existing

Interfaces

Resin Rich vs

VPI


Additional Material



Induction Motors & Generators

Parsons Peebles can test induction motors at 50 or 60 Hertz to BS EN/IEC60034 with ratings up to 15,000 kW. Testing to IEEE (USA) requirements can also be undertaken. No load losses and magnetisation characteristic. Temperature rise using direct loading via the differential

gearbox, the superposition method or by C. V. F. (continuously varied frequency, known as Primary Superposed Frequency in the USA).

Direct on line starting capability at both 50 and 60 Hz within the capability of Peebles test 40 MVA generator.

Locked rotor tests and starting torque measurement. This is limited to 2000 kW of losses (mostly rotor loss) in the motor under test, by the power that can be provided by the 40 MVA generator set.

Vibration measurement, recording and analysis, using the Bently Nevada ADRE equipment, and balancing on rotor end planes. The output can be downloaded onto disc for further analysis

Winding HV testing up to 33 kV with 100 kVA capacity Purging and pressurising certification testing of Ex p machines

for hazardous areas Noise testing


Synchronous Motors & Generators

We can test synchronous motors and generators at 50 or 60 Hertz with ratings up to 40 MVA but there is no firm cut-off point. Testing is limited by the generating capacity on the site. By using open circuit and short circuit heat runs machines up to

100 MVA can be tested Open and short circuit loss characteristics would be established Heat runs can be carried out at rated excitation, zero power

factor up to 35 MVA. For all ratings the heat runs can be performed utilising short circuit, open circuit and unexcited runs

Sudden three phase short circuit tests, time constants and reactances

Negative and zero sequence reactances can be measured Overspeed tests can be carried out on all but 2 pole generators Vibration measurement, recording and analysis, using the Bently

Nevada ADRE equipment, and balancing on rotor end planes. The output can be downloaded onto disc for further analysis

Winding and sample coil HV testing up to 33 kV with 100 kVA capacity

All rigid shaft generator rotors would be balanced in their own bearings. In addition we can trim balance two pole flexible rotors utilising accessible balancing planes


UK North Sea

Experience


Capability


Construction

Matching Existing

Interfaces

Resin Rich vs

VPI


Additional Material



Shaft centre line –match to existing

Holding down bolts, jacking, dowelling etc

Oil pipes - flexible

Main terminal box designed for “plug & play”

Terminal configuration & position, gland plate position - all to match existing

Cooler Pipes –same position

Auxiliary Terminal boxes –same position



UK North Sea

Experience


Capability


Construction

Matching Existing

Interfaces

Resin Rich vs

VPI


Additional Material



With conventional cage rotors, bar fracture usually occurs either just inside or just outside the slot.

The fracturing appears to be due not so much to the severity of duty or presence of vibration but to excessive looseness of the bar in its slot

Parsons Peebles design ensures and extremely tight and permanent fit resulting in lack of failure and increased machine availability

Other design features include:- Much better bar-to-core heat transfer resulting in less bar

temperature rise and reduction in thermally induced mechanical stresses

- Careful consideration to thermal and mechanical aspects of the short-circuit rings to reduce failure

- Design of cage rotor to reduced externally-induced vibration



UK North Sea

Experience


Capability


Construction

Matching Existing

Interfaces

Resin Rich vs

VPI


Additional Material



Advantages of Resin Rich

Rigid resins are used in slot cell section of the coil and different resins with resilience to coil movement are used in the endwinding i.e. resin containing flexibilisers

Capability to control Pd in the slot and remedial action in service is practical during insulation system life

Insulation resistance will be good when insulation system fully cured

Partial repairs are practical - i.e. coils which have failed can be replaced particularly when stator wound with half bars

Any machine can be rewound with resin rich insulation system wither in works or on site

Endwinding bracing systems can be improved & made more robust to meet operational requirements


Advantages of VPI

Lower manufacturing & winding costs

No scarf joint at end of coil slot straight

Straight length can be reduced

Voids reduced in winding

Homogeneous insulation & bracing

Gives good insulation resistance

Resistant to moisture &chemicals


UK North Sea

Experience


Capability


Construction

Matching Existing

Interfaces

Resin Rich vs

VPI



Additional Material



Disadvantages of Resin Rich More expensive than VPI Endwinding can contain voids, but since the endwinding

surface becomes charged to coil voltage, breakdown of internal voids is not a problem other than at the first bend under the stress grading tape

Endwinding insulation and blocking is not a homogeneous system therefore more dependant on competence of winders

Resin rich coils in the endwinding can be more prone to chemical attack than VPI windings. However when a problem like this has been identified it is possible to spray the endwinding with a 2 part epoxy resin coating

Resin rich windings need to be coated with either a polyester varnish or epoxy resin to provide a smooth surface finish


Disadvantages of VPI As VPI is used on larger and larger machines (i.e. up to 500MW) the VPI

impregnation process introduces new problems during the life of the winding Due to differential expansion between individual stator bars the coil to coil

bracing in the endwinding results in loosening of the bracing between coils which will requiring regular rectification during the life of the machine

There are a range of resins used in the VPI process The lower viscosity resins used by manufactures are difficult to maintain and need a high resin turnover

Retaining resin in the stator winding during curing generally requires stator rotation during the curing process, which is easier for manufacturers who wind a stator core pack before inserting the cured stator core pack into the stator case

Will not fill voids greater than 1mm in width The much more stable higher viscosity resins used in the VPI process by repair

companies can cope with the sporadic usage which occurs in a repair facility However because of the higher viscosity these types of resin have limitations

on the voltage since the resin will not penetrate through more that 6 half lap layers of insulation limiting it to 8kV windings or 13.8kV endwindings of a hybrid winding

The much more stable higher viscosity resins used in the VPI process by repair companies can cope with the sporadic usage which occurs in a repair facility

However because of the higher viscosity these types of resin have limitations on the voltage since the resin will not penetrate through more that 6 half lap layers of insulation limiting it to 8kV windings or 13.8kV endwindings of a hybrid winding

Conclusion:Parsons Peebles recommend resin rich for new machines but offer repair services and replacement coils for both types


UK North Sea

Experience


Capability


Construction

Matching Existing

Interfaces

Resin Rich vs

VPI


Additional Material





UK North Sea

Experience


Capability


Construction

Matching Existing

Interfaces

Resin Rich vs

VPI


Parsons Peebles pride ourselves on customer satisfaction – here are a few of our satisfied oil & gas customers

"I just can't say a big enough thanks for the support provided to me during my timeon Bruce”- Humberto Carillo, BP

“… just want to thank you and your team for your support thus far. Clearly this is a bigchallenge for us and so your prompt and timely response to questions, provision oflabour, procedures and materials is much appreciated. Please pass on myappreciation to your team and broader organisation.”- Jim Aston, Britannia Operator

“Many thanks for all your assistance.”- Neil Atkinson, Wood Group PSN