INSULTECH

Mid Temperature Acoustic 450ºF to 800ºF

Application

Exhaust Duct • PRV Stations • Steam Turbines • Fan Housings • Centrifugal Compressors • Silencers • Machinery • Turbochargers • Process Piping & Fittings

Market

Equipment operating above OSHA required sound limits • Commercial Industrial OEM

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 achieve 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 double sewn lock stitch with a minimum of 7 stitches per inch. All raw jacket edges will have a tri fold Teflon coated fiberglass cloth binder. No raw cut jacket edge shall be exposed. Stitching will be done with Teflon coated fiberglass thread. Monel staples shall follow the outer jacket edge for reinforcement and be spaced no greater than 1".

Barium Sound Protection
The Barium loaded Vinyl shall be sandwiched between the outer jacketing and the insulation filler. The Vinyl Septum will vary in weight from .5 lb/sf to 1.5 lb/sf.

Minimized Void Leaks
All blanket pieces which match mating seams and expose hot spots, will include an extended 2" Teflon / Barium flap. This flap will cover the exposed seam and will minimize potential noise leaks.

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.

Blanket Insulation Weight
When designing blanket insulation for large equipment where a multi-piece construction is necessary, the total number of pieces will be minimized. Any one piece will not exceed 50 lbs. in weight.

Assembly Drawing Requirements
Each blanket insulation project will include an instruction package shipped with the blanket material. This package will include Assembly Drawings identifying piece location, a Material List of all pieces and Instructions for Installation on how blanket insulation will be installed. The latest and most accurate records must be kept by the supplier on a CAD file for a minimum of ten years to assure re-orders and replacement.

Design Requirements
All blanket designs will accommodate vibration probes, gauges, tubing, piping, brackets, etc. All blanket pieces will be guaranteed to fit.

Guaranteed Fit
All blanket designs will accommodate vibration probes, gauges, tubing, piping, brackets, etc. All blanket pieces are guaranteed to fit for optimum acoustic performance.

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.