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Heat Trace System Design & Engineering Documentation

Mission-Ready Freeze Protection.

From heat-loss calculations to final as-built drawings — complete engineering packages, IFA submissions, and turnover documentation on every project.

SHT DS-01·DESIGN & ENGINEERING·REF $34M+ DOCUMENTED PROJECT VALUE
195K+Safe Work Hours
65+Facilities in the Record
100%IFA Package Delivery
0Recordable Incidents
01Engineering First

The Foundation Every System Runs On

Engineering is what separates a complete installation from a liability. Every Patriot project begins with a rigorous design phase — heat-loss calculations validated against NFPA standards, isometric drawings that match field conditions, and a complete IFA package submitted for approval before a single circuit goes live.

Most contractors install. Patriot engineers. The documentation your operations team receives at project close — as-built drawings, panel schedules, line lists, geo-location maps, commissioning data — is everything needed to manage the system for its full service life.

Because design and installation are handled by the same team, there are no handoffs, no translation errors, and no documentation gaps between what was specified and what was built.

02Standard on Every Project

What Every Design Package Includes

  • Heat-loss calculations — NFPA-validated, worst-case conditions
  • Isometric drawings — pipe-by-pipe cable routing, P&ID compatible
  • Panel schedules — full circuit-level documentation
  • IFA (Issued for Approval) package — submitted before work begins
  • As-built drawings — field-verified, reflects actual installation
  • Turnover / completion package — O&M ready on day one

Controls integration support via CIAC Systems where applicable. Every package is delivered in a format your engineering and maintenance teams can immediately use.

Circuit isometric EHT-001 — electric heat trace, issued for approval An engineering sheet as Patriot issues it: a header data strip of circuit design values across the top; an isometric drawing of a 6-inch heated header entering from an adjoining sheet, running through a bypass loop past an isolation valve to a power connection and end seal, with two 4-inch branches dropping to pump and motor assemblies that continue on the next sheet; the self-regulating heat-trace cable is shown as a dashed line running with the pipe, with line-sensing RTDs, pipe clamps and hexagon item callouts keyed to the bill of material at right; below it the line designation, readings and notes boxes, the revision row, and the title block. Customer identification is withheld. TO EHT-003 2’9" 4’8" 2’1" 10" 1’2" 2’1" 2’6" 3’5" 1’11" 1’4" 5’5" 3’5" 5’5" 7’6" 1’1" 2’6" 6’1" 1’3" 2’10" 6" PIPE 6" PIPE 4" PIPE 4" PIPE 1 6 2 5 3 5 4 5 4 5 CONTINUED ON EHT-002 CONTINUED ON EHT-002 TEMPERATURES MAINT 40°F MIN AMB −20°F MAX EXP 180°F INSULATION TYPE FG THICK 2″ PIPE DATA SIZE 6″ SCH 40 MATL CS REQ W/FT 9.7 PIPE LEN 80′ HEATER CABLE DATA TYPE SELF-REG 10 W/FT W/FT 11.4 HT LEN 165′ CKT LEN 165′ VOLTS 277 AMPS 6.8 WATTS 1881 ELECTRICAL EQUIPMENT DATA EHT NUM EHT-001 PANEL HT-1 BRK NO 1 BRK SZ 30A BILL OF MATERIAL ITEM QTY DESCRIPTION 1 165′ SELF-REGULATING CABLE 2 1 POWER CONNECTION KIT 3 1 END SEAL 4 2 LINE-SENSING RTD 5 4 PIPE CLAMP 6 1 LOT FIBERGLASS TAPE LINE DESIGNATION REFERENCE DRAWINGS 6″-PL-001 EHT-003 4″-PL-002 EHT-002 4″-PL-003 EHT-002 READINGS NOTES 1. READINGS RECORDED AT COMMISSIONING.    SEE CIRCUIT RECORD. PATRIOT THERMAL CONTROLS 67 GILBANE STREET WARWICK, RI 02886 CUSTOMER WITHHELD REV 0 DATE 09-08-2026 DESCRIPTION IFA BY AH CHK JC THIS DRAWING IS THE PROPERTY OF PATRIOT THERMAL CONTROLS. NOT TO BE COPIED OR USED EXCEPT FOR THE PURPOSE FURNISHED. SCALE NTS DWG NUMBER EHT-001 SHT 1 OF 3 REV 0
DRAWING · EHT-001 · CIRCUIT ISOMETRIC A circuit isometric as we issue it for IFA — pipe run, cable route, power connection, RTDs, end seal, bill of material. Client details withheld. Drag the sheet sideways to read it
03What We Deliver

Six Deliverables — Every Project

Each of these documents is standard — not an add-on, not an upgrade. This is what complete heat trace engineering looks like.

01

Heat Loss Calculations

Engineering-verified calculations determine the exact wattage, circuit length, and cable type required for each application — sized for worst-case ambient conditions to ensure system reliability when it matters most.

02

Isometric Drawings

Detailed pipe-by-pipe drawings showing cable routing, junction box locations, end seals, and power connection points — delivered in AutoCAD-compatible format and designed to integrate with your existing P&ID package.

03

Panel Schedules

Complete circuit-level documentation listing cable type, wattage, circuit length, breaker sizing, and controller assignments for every circuit in the system — the reference document your maintenance team will use for the life of the installation.

04

IFA Package (Issued for Approval)

A complete engineering submission for client and engineer review and approval before work begins. Includes drawings, calculations, materials list, and scope confirmation — so you know exactly what you’re getting before a single circuit goes live.

05

As-Built Drawings

Field-verified drawings updated to reflect actual installation conditions — capturing every deviation from the original design and delivering an accurate record of what was built. The document your team relies on for every future repair or expansion.

06

Turnover / Completion Package

Everything your O&M team needs to manage the system: as-builts, megohm and amp readings, line lists, geo-location maps, controller documentation, and commissioning data — organized and delivered in a single package at project close.

04Why It Matters

Documentation Isn’t Optional

05Regulatory

NERC Cold Weather Compliance

Power generation facilities are subject to NERC EOP-011 and EOP-012 cold weather preparedness requirements. Proper engineering documentation — calculations, as-builts, inspection records — is a compliance requirement, not a courtesy.

  • R1: Engineering study of ECWT and existing freeze protection with compliance documentation
  • R2/R3: CWCC identification, capability verification, and Corrective Action Plan implementation
  • R4: Annual EHT/insulation audits with maintenance estimates for Cold Weather Preparedness Plans
06Operations

Maintainability Over the System’s Life

A system without documentation is a system that becomes unmaintainable. As-built drawings, panel schedules, and line lists allow any qualified technician to troubleshoot and service the installation — not just the crew that installed it.

  • Accurate as-builts reduce troubleshooting time from hours to minutes
  • Panel schedules allow fast circuit isolation without guesswork
  • Geo-location maps let maintenance teams find every junction box and end seal on large facilities
  • Controller documentation enables setpoint verification during cold weather events
The Patriot Difference

Design and Installation. Same Team. Zero Handoffs.

When the engineer who sized the cables is the same person overseeing the installation, there are no translation errors. No documentation gaps. No “that’s not what the drawing says” on day two.

No Third-Party Engineering Firms Design is done in-house by the same team that handles installation — no separate engineering contracts, no scope disputes, no blame-shifting when the drawing and the field don’t match.
IFA Package Before Work Begins Nothing goes live without your approval first. The complete IFA submission gives you and your engineers full visibility into scope, materials, and approach before a single crew arrives on-site.
Turnover Package at Project Close Every project closes with a complete documentation hand-off. Your maintenance team gets everything they need — not a box of field markups and verbal briefings.
65+ Sites Engineered & Documented
07Ready to Start

Let’s Engineer Your System Right.

Whether you’re starting a new installation, upgrading an existing system, or need documentation for a system that was never properly commissioned — Patriot delivers complete engineering from calculation to turnover package.