unit 6 helitorch operations/exercises
DESCRIPTION
Unit 6 Helitorch Operations/Exercises. Objectives. Understand what constitutes a suitable Helitorch Operations site Successfully hook-up a Helitorch to the Helicopter Demonstrate how to test Helitorch with aircraft power. Objectives. - PowerPoint PPT PresentationTRANSCRIPT
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Unit 6Helitorch Operations/Exercises
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Objectives
Understand what constitutes a suitable Helitorch Operations site
Successfully hook-up a Helitorch to the Helicopter
Demonstrate how to test Helitorch with aircraft power
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Objectives
Demonstrate procedures for filling a Helitorch from mixing systems
Perform final Helitorch systems check, finalize Go / No Go checklist
Demonstrate the mixing procedures for mixing systems
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Helitorch Base
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Helitorch Site Locations Helitorch site large enough to safely
accommodate all necessary equipment Establish clear approach and departure
paths, over flight of personnel, vehicle traffic, and property not allowed
Maintain safety circle Close proximity to burn site desired Consider impacts from smoke/embers
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Helitorch Site Locations (cont’)
Authorized personnel only Establish alternate landing area Separate Helitorch base from wildland
fire helibase Establish escape routes for personnel
& equipment in event of escaped fire Consider dust abatement needs
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Helitorch
Installation
Procedures
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Helitorch Installation to the Helicopter Remove pilots door Complete the helitorch check list Place helitorch in front of ship with nozzle to the
pilots side Make sure switches are in off position Layout suspension system under helicopter
between skids Assure suspension system attachment point is
configured for cargo hook, DO NOT hook up suspension system until test completed
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Connect the 9 pin plug
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Installation (cont’)
Install a propane bottle (if applicable) and adjust pressure (5-10 psi)
Have pilot active helicopter electrical power to helitorch
Test electrical ignition system Test pump Do a manual and electrical test of cargo hook
release Attach suspension system to helicopter cargo hook
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Helicopter-Helitorch Test
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Helicopter-Helitorch Test
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Mixing Systems Safety Standards
Mixing Area
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Mixing Area Located outside of the helicopter safety
circle During the mixing operation fire protection
will be staffed and ready Restricted to Helitorch personnel only No smoking within 50 feet of any operation
on the Helitorch base, including the vapor removal discharge hose outlets
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Mixing Area (cont’)
Precautions must be taken to eliminate sources of ignition
Use approved gelling agent dispenser NO PLASTIC of any kind should be used
in the mixing operation
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Bonding Sequence
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Bonding Mixing Systems, Helitorch & Bulk Fuel Source
Connect bonding cable from bulk fuel nozzle to the mixing system or a common bonding point
Connect vapor removal hose Open fueling port and begin fueling When fueled remove nozzle, close port Remove bonding cable Note: The goal is to provide continuity
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Bonding from the mixing system to the Helitorch drum for gel loading
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Connect vapor removal hose Use a fuel transfer hose with wire
helix and a dry-break connector and connect into the Helitorch dry-break
When done disconnect dry-brake Remove vapor hose
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Commercial Gelling Agent
Use only commercial gelling agents that come with an MSDS
Maintain proper mix ratio Gelling agent should be dry and free of
contaminants Break up any lumps before adding to fuel
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Gelling Agent (cont’)
Gelling agent added to partially gelled fuel will not dissolve
More than 5 to 10 percent residual gel left can cause severe clumping
Add gelling agent to agitated fuel at a moderate rate
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Fuel Gasoline or a gasoline (70%) / diesel (30%)
combination is preferred Use clean fuels, avoid contaminants Warmer fuels will gel more quickly Fuel additives used for formulating
oxygenated fuel have had a negative effect on maintaining gel cohesion
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Mixing Systems
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Mixing Systems
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Mixing Systems Personnel required:
• Mixmaster • Mixing crew• Fuel truck driver
Mixing system should be as empty as possible of residual gel
Bond to bulk fuel source Hook up vapor removal hose (50 ft. minimum),
layout and post “no-smoking”signs
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Mixing Systems
Fill mixing system with desired amount of fuel
Begin fuel agitating/re-circulation and check Dispense gelling agent into fuel at a moderate
rate Continue re-circulation for 2 minutes for 55
gallon drums and 5 minutes for larger quantities, then shut off system and wait
Gelling should be complete in 5-20 minutes
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Mixing Systems Check for proper gel consistency with a
wooden or aluminum paddle. The gel should envelope around the paddle
when inserted into the gel (batch mixer) When removed from the gel there should be
no liquid dripping and gel should roll right off paddle and not stick to it
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Filling the Helitorch Personnel required:
• Parking Tender• Mixmaster• Mixing crew member (s)
Parking Tender marshals helicopter then assures switches are turned off
Parking Tender than signals mix personnel that they can start torch filling operation
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PAY ATTENTION
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Filling the Helitorch Parking Tender then staffs fire extinguisher
for duration of all operations Mix Master ensures that switches are off
then hooks up vapor removal hose Hooks up fuel transfer hose and signals
pump operator to begin fuel transfer Watches through sight glass to monitor fuel
level
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Filling the Helitorch Signals pump operator (give pump operator
enough notice) when full, gel to bottom of sight glass and shuts off dry brake
Unhooks vapor hose then fuel hose and replaces clay bailey 2” cam lock
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Helitorch Test - First Load With helicopter not running, and switches
in off position, signal to pilot to turn on power to Helitorch
Place a bucket under the nozzle and turn on the pump switch until gel comes out, test helitorch for fuel flow, ensure nozzle valve is not leaking
Assure both switches are off
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Final Helitorch Systems Check
Inspection should be done by the Helitorch Manager with the Parking Tender and Mixmaster present
During helicopter fuel cycles, re-inspect the helitorch
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Inspection Items Suspension system Cam lock caps secured Visual of Drum straps Propane pressure between 5 to 10 p.s.i.
(Simplex) Dry break valve open (Isolair/Simplex) Fuel flow valve open Ignition component properly adjusted & cleaned
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Launch Mix master or designee turns switches on Parking tender ensures switches are
activated and informs pilot the system is ready
Parking Tender marshals takeoff and advises pilot of any unsafe conditions
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