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Project Sales Corp Project Sales Corp Newsletter January 2005

Sealing of HVDC Valve Hall for ABB atSealing of HVDC Valve Hall for ABB at

Power GridPower Grid

Printed at 28 Founta Plaza, Suryabagh, Visakhapatnam

530020 Call 0891 2564393, Fax 0891 2590482 mailto:

[email protected]

Please accept our best wishes for a very Happy New Year

As we bid adieu to 2004, we look at some of the key activities

that were memorable during the year.

In a small way, we had the opportunity to shape up theAPTRANSCO’s efforts in bringing reliability to the

transmission side. Starting in June 2003 with Dow

Corning 5 Compound, that’s now become generic for

arcing and flashover protection of insulators, the success

of the product lined up the job of bringing longer-term

protection to insulators with Dow Corning High Voltage

Insulator Coating – Sylgard HVIC. The scope of the

activity included the supply and apply of coatings to the

Bus Coupler Bay at Kalapaka 400 KV SS.

The entire infrastructure was lined up in terms of

equipments, safety training for working at heights,coating methodologies and over 60% of the job was

completed in 2004. Take a look at some of the pictures

below.

Sylgard HVIC Application

Most of the other industries continued to rely on the time tested

Dow Corning 5 Compound and 3099 Compound.

Project Sales Corp, with the most complete line of sealing

compounds and materials was awarded the job of sealingthe Valve Hall, the heart of a HVDC station against

ingress of dust, moisture, water and smoke. A multi-

pronged strategy was adopted with various materials as

you can see below.

Over 200 equipments including CTs, CVTs, Isolators, pilots,

tension strings, etc were coated with over 500 kgs of Sylgard

HVIC, many at heights above 20 metres. Safety training of the

painters were an integral part of the exercise with Pentasafe Team

from Mumbai providing the fall protection equipment and

training.

In 2005 we look forward to finishing the remaining part of the job

in the 1st quarter.

These product when applied over the

insulators form a hydrophobic layer

that prevents formation of a

continuous path over the insulator

surface.

Formulated with Dow Corning select

phenymethyl fluids with arc resistant

additives, they provide unmatched

protection against flashovers.

Any Problem, Many Solutions™

The Valve Hall in the

new 1x 500 HVDC

station

Transformer Side

bushing entry areas

were sealed from outside

Primary sealing of joints with 736 High

Temperature RTV

Brushable coat of

Dow Corning 1890

to cover pin holes

3M Firedam 150+, an

endothermic coating

for firestopping over

736 on the transformer

bushing entry side.

P h o t o c o u r t e s y : A B B L i m i t e d

The job was carried out over a 4 day period with Dow

Corning 736 High Temperature RTV, Dow Corning 1890Protective Sealer, 3MFiredam 150+, an endothermic

firestopping sealant.

CT Blast at GTPS, Vijjeswaram

When a CT at the Gas Turbo Power Station at Vijjeswaram

blasted, it ripped many an insulator across the switchyard.

Immediate replacements were called for, but sufficient

quantity was not available. Project Sales Corp took up the

onus of fixing as many chipped insulators with Devcon

Wear Resistant Putty followed by a coating of Brushable

Ceramic.

Over the years Devcon brand

epoxy putties are a reliable way

of emergency repairs to many

electrical equipments. These

include insulators, bus bars,

motors, transmission towers, etc.

As we get into 2005, we wish you a very Happy New Year

again and look forward to associating with many of you in

solving more problems, with the use of the most complete

portfolio of maintenance-repair-overhaul consumables

from one source. Explore your options us™. Call us at

0891 2564393, 5566482 or fax us at 0891 2590482. Or

drop us a line at [email protected].