INSULTECH

		Application Engine Manifolds • Exhaust Reducer Cones • Mufflers • Expansion Joints • Exhaust Piping • Fittings • By-Pass Piping • Turbo Charger Casings Market Gas Transmission Stations • Cogeneration Power Plants Design Components:

Blanket Thickness Surface Temperature Reference:
Operating Temperature	Thickness/Surface Temperature		Thickness/Surface Temperature		Thickness/Surface Termperature
700º F (371ºC)	1.5"	156.5ºF	2"	139.6ºF	2.5"	128.4ºF
800ºF (427ºC)	1.5"	174.6ºF	2"	154.5ºF	2.5"	141.2ºF
900ºF (482ºC)	1.5"	194.5ºF	2"	171.0ºF	2.5"	155.4ºF
1000ºF (538ºC)	2"	189.4ºF	2.5"	171.2ºF	3"	158.1ºF
1100ºF (593ºC)	2"	209.7ºF	2.5"	188.8ºF	3"	173.7ºF
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 rotation.

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. 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 Each blanket insulation project will include an instruction package shipped with the blanket material. This package will include Assembly Drawing 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.. ID Plate 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. Quilting Pins To enhance blanket quality and to maintain uniform thickness, stainless steel tufts or 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 Standard Fastener Blanket insulation will accommodate the following fastening option. A 20 gauge stainless steel wire is doubled up and twisted in a spiral fashion with a minimum 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. Fastening Options 1. Lacing Pins Stainless Steel Typle 304 lacing pins. These pins can either be 12 or 14 gauge. Location of pins on the blanket will be 2" or more from blanket edge and 8" or less from centerline to centerline. 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 instillation, 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 design construction or workmanship. 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 contact Shannon direct. Design Construction Sample Upon bid submittal a blanket design construction sample must be presented for review and product approval. A 12" by 18" sample will be required and must identify all characteristics mentioned in the above fabrication requirements. Any deviations from the above stated requirements may result in rejection.

	Design Spec Index