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TECHNICAL SPECIFICATIONS FOR CONDUCTING SPRING HANGER & PIPING

SUPPORT INSPECTION FOR CHILCA UNO COMBINED CYCLE POWER PLANT

BACKGROUND

Our plant site is located in Lima, Peru. However most of the industrial components usedduring plant erection were brought from the US, Europe and South Korea, and following thislead, we have privileged since then direct contact with the OEM or its authorized distributorstherein...As of now, we are interested in solely performing a spring hanger & pipe support inspectionthat uncovers any problems or help us out in identifying options for improving our currentconfiguration.

From our standpoint it is clear that a hanger and support inspection must be implementedthe sooner the better. EnerSur has finally gathered as much information as readily availableat plant site project documentation library regarding pipe hangers and supports, it is almost

215 MB in size

Bearing in mind our HRSG units were built and erected as per ASME Section VIII 2007Edition with 2009 Addenda & HEI, we will request that winner bidding company be certifiedaccordingly for performing this tasks. On this regard, EnerSur will appraise the most tobidding companies whose personnel exhibit a technical background in excess of 5 years inperforming this task.

All tools and equipment to be used in these activities must have an updated certification forconducting the tests as per ASME, NB, or MSS SP regulations applicable hereinwe willapply the most stringent criteria whenever decision-making must be done.

PLANT AND ACC LIFE STATISTICS

a. Commercial Operation Date for HRSG Units # 11, #12 and #21 including Deaeratorand ACC was Thursday, November 15th2012.

b. Since then, our national grid coordinator, COES for short, has dispatched our planteither partial or base load.

c. So far, our Operation and Maintenance logbooks have recorded some unit forcedoutages and trips that are available upon request for further revision.

d. Our 3 X 1 combined cycle configuration encompasses three topping cycles and onebottoming cycle.

The topping cycles include the following machines: two Siemens V84.3a2

combustion turbine units (SGT6-4000F) and one SGT6-5000F unit, alsocoded as W501FD3

The bottoming cycle comprises three BHI heat recovery steam generators,one GE D11 steam turbine unit, an SPX air cooled condenser and fourHyundai boiler feedwater pumps plus a Deaerator vessel

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SCOPE

Following Good Industry Practices, the appointed specialist company will conduct aninspection of as-built, as-found support components for the power piping as laid out at plantsite premises to identify current problems and defects affecting them. It is our understandingso far that they comply and conform with ASME B31.1, MSS SP 58 & MSS SP 127. Ifadditional standards, recommended practices or regulations are found to be applicable forthe purpose, both the winning bidder company and EnerSur will meet together for analyzingpros and cons for the Chilca Uno project.

Hangers & supports are to be investigated for the following: General condition of pipe supports and hangers and their components. Poor support design. Faulty installation. Incorrect load settings. Inappropriate instructions. Deficient quality of support components Proper hanger type selection.

Proper loading & movements. Possible interfering edges which may hamper the piping expansions.

Attached herein, the winning bidder company will receive the following documentation: Complete listing of both constant-load and variable-load supporting devices as laid

out at plant site (when finally they are confirmed to be as-built and ready/available forsubmittal)

Hot & Cold Temperature Settings for all pipe supports & hangers as laid out at plantsite (when finally they are confirmed to be as-built and ready/available for submittal)

Technical drawings as per listing below. If additional information is deemed necessary and this is not available at the time, the

winner bidding company is entitled to apply best industry practices and criteria in

agreement with EnerSur in order to correct, repair, and modify existing configurationfor the good.

Main goal for this activity is to increase reliability figures for Power Piping System running along HRSG Units # 11, # 21 & # 31 and into Steam

Turbine Unit # 270T818 including both ACC & Deaerator facilities

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TECHNICAL INFORMATION & DOCUMENTATION:

0-WD385-EP146-0001_HP STEAM SYSTEM.pdf0-WD385-EP146-0002_COLD REHEAT SYSTEM.pdf0-WD385-EP146-0003_HOT REHEAT SYSTEM.pdf0-WD385-EP146-0004_FEED WATER SYSTEM.pdf0-WD385-EP146-0005_LP STEAM SYSTEM.pdf0-WD385-EP146-0006_AUX STEAM SYSTEM.pdf0-WD385-EP146-0007_CONDENSATE SYSTEM.pdf0-WD385-EP146-0008_STEAM DRAIN & EXHAUST HOOD WATER SPRAY SYSTEM.pdf0-WD385-EP146-0009_STEAM SEAL SYSTEM.pdf0-WD385-EP146-0010_BLOWDOWN WATER TRANSF SYSTEM.pdf0-WD385-EP146-0011_FLASH BOX DRAIN SYSTEM.pdf0-WD385-EP146-0012_FLASH TANK DRAIN SYSTEM.pdf0-WD385-EP146-0013_BFP FW TANK AREA.pdf0-WD385-EP146-0014_BYPASS VALUE STATION AREA.pdf0-WD385-EP146-0016_CONDENSATE TANK PUMP AREA.pdf

0-WD385-EP146-0017_FIN FAN COOLER AREA.pdf0-WD385-EP146-0018_HRSG AREA.pdf0-WD385-EP146-0019_MAIN PIPE RACK AREA.pdf0-WD385-EP146-0021_STG AREA.pdf0-WD385-EP146-0022_WATER TREATMENT AREA.pdf0-WD385-EP146-0023_STEAM BLOWING OUT SYSTEM.pdf0-WD385-EP146-0024_CLOSED COOLING WATER SYSTEM.pdf0-WD385-EP146-0025_SMALL BORE TYPICAL DRAWING.pdf0-WD385-EP146-0026_SERVICE DEMI WATER SYSTEM.pdf0-WD385-EP146-0027_ST INTERONECTING PIPING.pdf0-WD385-EP244-00001_Painting Procedure.pdf0-WD385-EP290-00001_Rev AB_AS BULT.pdf

0-WD385-EZ261-00001_WPS&PQR&CWL Procedure.pdf0-WD385-EZ670-00001_Rev AB_AS BULT.pdf0-WD385-EZ731-00002_Packing Procedure.pdf0-WD385-EZ731-00003_Heat Treatment Procedure.pdf0-WD385-EZ731-00004_Rev AB-AS BULT.pdf

\\ENERPECHISFSP01\Base de Datos\Base de Datos CC_Chilca Ciclo combinado\400Engineering\402 HB HRSG\7.Piping

\\ENERPECHISFSP01\Base de Datos\Base de Datos CC_Chilca Ciclo combinado\400Engineering\402 HB HRSG\7.Piping\[1&2-WD170-EP146-C0001] Pipe Support Drawings

\\ENERPECHISFSP01\Base de Datos\Base de Datos CC_Chilca Ciclo combinado\400Engineering\402 HB HRSG\7.Piping\[3-WD170-EP146-C0001] Pipe Support Drawings

\\ENERPECHISFSP01\Base de Datos\Base de Datos CC_Chilca Ciclo combinado\400Engineering\402 HB HRSG\7.Piping\[3-WD170-EP146-C0001] Pipe SupportDrawings\Rev.0\pdf

\\ENERPECHISFSP01\Base de Datos\Base de Datos CC_Chilca Ciclo combinado\400Engineering\402 HB HRSG\7.Piping\[3-WD170-EP146-C0001] Pipe SupportDrawings\Rev.a\PDF

\\ENERPECHISFSP01\Base de Datos\Base de Datos CC_Chilca Ciclo combinado\400Engineering\402 HB HRSG\7.Piping\[3-WD170-EP146-C0001] Pipe SupportDrawings\Rev.b\pdf

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\\ENERPECHISFSP01\Base de Datos\Base de Datos CC_Chilca Ciclo combinado\400Engineering\PIPING - PIPE RACK

\\ENERPECHISFSP01\CT_Chilca\30 Proyecto Comb Cycle\04. Informacion Tecnica\2.Manuales O&M\Appendix (Vendor's OM Manual)

\\ENERPECHISFSP01\CT_Chilca\30 Proyecto Comb Cycle\04. Informacion Tecnica\2.Manuales O&M\Appendix (Vendor's OM Manual)\35.Pipe Hanger&Support

F:\NO.49_385_PHS_Pipe Hanger & Support_Seonghwa

\\ENERPECHISFSP01\CT_Chilca\30 Proyecto Comb Cycle\04. Informacion Tecnica\2.

Manuales O&M\Appendix (Vendor's OM Manual)\35.Pipe Hanger&Support

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NO.49_385_PHS_Pipe Hanger & Support_Seonghwa

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SUGGESTED SCHEDULE FOR SERVICE

Having into consideration that we are running out of time for appropriately addressing this

issue, our best suggested time frame and program for conducting this inspection within plant

site installation premises is as follows:

a. EnerSur Chilca Uno Combined Cycle Power Plant is currently dispatching to the grid

and spring hangers and piping supports can be considered to be operating in hot

condition and they will stay that way until November 17 th, 2014 when its scheduled

outage will start.

b. As per last walk-down inspection, all spring hangers and pipe supports are easily and

safely accessible either by handrails, platforms, catwalks, scaffolding and/or ladders

for the purpose.

c. For the hot-condition inspection, the winner bidding company will be scheduled to

perform its duties within the timeframe period going from October 27 thonwards and

no later than October 31st, 2014. EnerSur and the winner bidding company will meet

each other upon finishing the hot-settings spring hanger and pipe support inspection

on a daily basis. The winner bidding company will release a preliminary report

immediately afterwards and will issue a final report within the next five (5) working

days for review.

d. For the cold-condition inspection, the winner bidding company will be scheduled to

perform its duties within the timeframe period going from November 20th onwards

and no later than November 25th, 2014. The winner bidding company will release a

preliminary report immediately afterwards and will issue a final report within the next

ten (10) working days for review.

e. The winner bidding company may suggest a work schedule in advance so that all

activities run smoothly.

SPECIAL TOOLING NEEDED FOR PERFORMING THE SERVICE

a. As per EnerSur best understanding, no special tools will be deemed necessary other

than those used by the winner bidding company. HRSG and deaerator units are

provisioned with ladders and handrails for safely getting access to equipment. If need

be, EnerSur will take care of temporary scaffolding for hard-to-reach areas, manlift

equipment and loader cranes fit for the purpose.

b. Updated calibration certificates are mandatory for all tools and instrumentation used

in this inspection.

MATERIALS, CONSUMABLES & SPARE PARTS

a. EnerSur will not provide special materials, consumables that are not supplied via

local vendors in Peru, so the winning bidder company must account for these and the

logistic support that may be needed for having them available at plant site. EnerSur

may assist the winning bidder in getting contact credentials for approved and certified

local vendors.

b. EnerSur will supply industrial-grade water (desalinated and deionized water),

electricity (480 VAC, 220 VAC, 60 Hz, single-phase, three-phase), compressed air

(100 psig) and any means deemed necessary to make them available at specific

areas near the ACC installation.

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SAFETY REGULATIONS

EnerSur is an ISO compliant company and is currently certified at ISO 9001, ISO 14001 and

ISO 18001 so we promote quality and safety at work alongside environmental stewardship.

On this regard, all employees and people working inside the plant site must follow safety

regulations that will prevent any accidents from occurring anytime, anywhere.

a. All winning bidder company inspectors will attend a health and safety induction

training session (no longer than 2 hours)

b. The winning bidder company will prepare a risk assessment matrix / environmental

impact assessment for the job being carried out

c. The winning bidder company inspectors will have documentation updated for

labor/life insurance.

d. The winning bidder company inspectors will generate a short form for describing the

job to be performed at plant site so that EnerSur can help in implementing a lock-out

/ tag-out procedure to suit their needs, having in mind there will be other contract

companies doing different activities and performing other jobs at the same time.

e. Even though EnerSur knows that above-mentioned ISO standards can not

completely equate to OSHA regulations, we understand that the core business for

the latter is also employee life- and health preservation. On this regard, EnerSur will

accept them as a valid and added aid and will help us during safety training sessions.

DELIVERABLES

a. Following the SPRING HANGER & PIPE SUPPORT INSPECTION, both the winning

bidder company inspectors and EnerSur interested parties will meet together for a

preliminary report of activities accomplished so far and for identifying findings that

may entail prompt action to circumvent near-future problems.

b. If further documentation is needed for circumscribing scope of conclusions and

recommendations, the winning bidder company is entitled to issue timely inquiries

within 5 DAYS before the final report is submitted for a last revision and discussion.

c. Final report must be issued in one hard paper copy and in digital format, CD-ROM or

DVD media, depending on how much resolution the video or picture material does

have or how hefty the documentation may be.

d. The winning bidder company will issue an updated listing of spring hangers and pipe

support components in an illustrated Excel sheet as per the recommended format

attached herein in Annex # 08A & 08B.

REFERENCE STANDARDS

ASME BPVC 2013, Section V, Nondestructive Examination

ASME BPVC 2013, Section VIII, Rules for Construction of Pressure Vessels, Division

1

National Board Inspection Code (NBIC), 2013 Edition

ASME B31.1 (2012) Power Piping (Annex # 4)

MSS SP 58 (2009) Pipe Hangers and Supports - Materials, Design, Manufacture,

Selection, Application, and Installation (Annex # 5)

MSS SP 127 (2014) Bracing for Piping Systems: Seismic-Wind-Dynamic Design,

Selection, Application (Annex # 6)

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ANNEX 01 : SAMPLE AFFECTED COMPONENTS DUE TO DEFICIENT

HANGER AND SUPPORT INSTALLATION ALONG POWER PIPING SYSTEM

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ANNEX 02 : REFERENCE STANDARDS AS CLAIMED BY KOREAN OEM

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ANNEX 3 CONTACT CREDENTIALS FOR PIPE HANGER & SUPPORT OEM

SEONGHWA

http://www.seonghwa.co.kr/

http://www.seonghwa.co.kr/http://www.seonghwa.co.kr/

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ANNEX 4 : ASME B31.1 2012 Power Piping

https://www.asme.org/products/codes-standards/b311-2012-power-piping

http://files.asme.org/Catalog/Codes/PrintBook/34984.pdf

https://www.asme.org/products/codes-standards/b311-2012-power-pipinghttps://www.asme.org/products/codes-standards/b311-2012-power-pipinghttp://files.asme.org/Catalog/Codes/PrintBook/34984.pdfhttp://files.asme.org/Catalog/Codes/PrintBook/34984.pdfhttp://files.asme.org/Catalog/Codes/PrintBook/34984.pdfhttps://www.asme.org/products/codes-standards/b311-2012-power-piping

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ANNEX 5 : MSS SP-58-2009 Pipe Hangers and Supports - Materials, Design,

Manufacture, Selection, Application, and Installation

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ANNEX 6 : MSS SP-127-2014 Bracing for Piping Systems: Seismic-Wind-Dynamic

Design, Selection, Application

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ANNEX 07 : REFERENCE STANDARDS AS OUTLINED BY DIFFERENT OEMS

FOLLOWING OUR FIRST INQUIRIES:

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ANNEX 08A : HANGER RECORD SHEET AS OUTLINED BY DIFFERENT OEMS

FOLLOWING OUR FIRST INQUIRIES:

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ANNEX 08B : HANGER RECORD SHEET AS OUTLINED BY DIFFERENT OEMS

FOLLOWING OUR FIRST INQUIRIES:

System Code Location Type Photograph

HotReheat

HR-1 Top of HRSG,under pipe,

nearLHSW, over

UC1front wall.

VariableType T

ColdReheat

CR-4 Near LHSW,~12 m

above grade,hung

from pipebridge

ConstantLoad

HangerPair

Type CDS

HP Steam HP-1 Adjacent tofrontwall of UC1,upstream of

desuperheater,near LHSW

FixedHangerRod