INSULTECH

High Temperature GAS ACOUSTIC ABOVE 450º - ENGINE EXHAUST APPLICATION

Application
Exhaust Piping • Exp. Joints • Turbocharger Cases • Exhaust Plenums • Exhaust Ducting • Silencer Housings • Exhaust Manifolds • Exhaust Cones • By-pass Piping • Mufflers • Fittings

Market
Gas Transmission Stations • Cogeneration Power Plants

Design Components:

Blanket Thickness Surface Temperature Reference:

Thickness/Surface Temperature

• The above reference cold face surface temperatures should be used as guidelines for blanket thickness design.
• The cold face surface temperature of the blanket should approach surrounding ambient temperature conditions.
• The economic thickness of the blanket should consider blanket cost to thermal performance.
• Heat loss calculations are based on a 70ºF ambient using a flat surface condition.

Blanket Thickness to Acoustic Performance:

Fabrication Requirements

Blanket Construction
Blanket Construction shall be a stapled construction. Outer jacket materials will be drawn down, to match at the inner jacket edge. Jacketing will be folded under and stapled with 3/8" Monel bevel point staples at the seam. Staples are to follow the inner jacket edge with at most 1" spacing between staples. Hogrings are not acceptable.

Blanket Overlap
Blanket design will encase the unit to be insulated and if possible a minimum 4" overlap will extend beyond mating flanges. Where feasible, insulation will overlap mating flanges. If overlapping is not possible, blanket insulation will butt up to the adjoining surface.

Assembly Drawing Requirements
For multi-piece designs, an installation assembly drawing is required. The assembly drawing will reference tag number sequence for installation. Each blanket piece will have an I.D. tag corresponding to the assembly drawing. Instructions for install and a Material List will also be included. Copies will be submitted for future reference and files.

ID Plates
For easy identification and location, a stainless steel or aluminum name plate tag is riveted to each blanket piece. 1/8" Embossed lettering shows location, description, size, pressure rating and tag number sequence.

Quality Pins
To enhance blanket quality and to maintain uniform thickness, stainless steel quilting pins will be placed at random locations no greater than 18" apart. This will prevent shifting of the insulation filler.

Minimized Air Void
Blanket design will conform to the equipment surface with minimized air void. The total number of pieces will be minimized. Any one piece will not exceed 50 lbs. in weight. Designs will minimize installation time as well as removal time.

Standard Fastener
A 20 gauge stainless steel wire is doubled up and twisted in a spiral fashion with a minimum of 4 twists per inch. Wiretwist length will be 16" or longer. The Wiretwist will be secured to the lacing pin at the pin stem. Lacing pin stems will be 14 gauge.

Design Guidelines
To access the true limitations of this recommended design, refer to the technical data sheets on each product component. Following these guidelines will produce the highest achievable service life. Blanket design quality can be reduced or enhanced by changing any one component. If a question arises regarding deviations from those stated guidelines, please contact your regional representative or call Shannon direct.

Project Qualifications
All items to be insulated will require a field takeoff prior to bid submittal, and must be reviewed for proper cost estimation. Upon receipt of project contract, each and every item must be accurately measured for retrofitting to existing field conditions and tagged with an aluminum or stainless steel identification tag showing an item number for installation reference. At the time of installation, blankets must have a corresponding item number shown on the blanket tag and must match to existing tagging on fitting. No standard blanket designs will be accepted. This will assure good thermal performance.

Warranties
All blankets will carry an 18 month warranty covering the replacement cost of the blanket. This warranty will cover blanket failure due to premature degradation from either blanket components used in the blanket, the blanket design construction or workmanship.