Pb#010 - L Mh H Receivers

Document Title:

Product Bulletin #010

Revision No:

1

Description:

Guidelines on the Application of Light (L), Medium-Heavy (MH) and Heavy (H) Banlaw Fuel Receivers

Issue Date:

10/03

1. OBJECTIVE This document provides guidelines on the application of Banlaw Light (L), MediumHeavy (MH) and Heavy (H) diesel fuel receivers.

2. BACKGROUND The current trend for higher refuelling rates, lower fuel tank pressurisation, and larger plant equipment has placed increased emphasis on the need to ensure the correct refuelling nozzle shut-off pressure is maintained for all equipment serviced by a single nozzle. Banlaw currently offer 5 different spring settings with their range of B800 model nozzles, and 4 settings with the B1000 model nozzles. These settings allow a nozzle to be set to refuel a number of similarly configured fuel tanks – a feature not offered by our competitors. Modern day mine sites feature a vast array of different equipment. Typically, a single refuelling nozzle is used to refuel a variety of this equipment. To prevent premature nozzle shut-off (nozzle shuts off prior to tank being filled), the spring setting is often set to cater for the “worst case scenario”, i.e. the piece of equipment which creates the highest delivery head pressure against the nozzle (e.g. large excavator etc.). Whilst this may suit this and similarly configured tanks, other equipment requiring a lower spring setting (e.g. small haul truck, lighting plants, drills etc.) – due to a lower delivery head pressure – are refuelled using the same nozzle and are thus subject to higher fuel tank pressures than normally required. In the worst possible cases, tank overpressurisation of such “lower head” equipment can occur. Higher delivery head pressures can be created in a number of ways, for example: • Static Head o Greater height between receiver and top of tank • Dynamic Head o Greater length of pipework or hose linking receiver with tank inlet o Higher number of fittings (i.e. bends, valves, etc) installed between receiver and tank o Relatively low “flow diameter” (nominal bore) of pipe, hose, or fittings used, resulting in higher flow velocities (higher viscous losses) o Operating the refuelling pump at a higher flowrate (or pump speed) whilst refuelling only certain pieces of equipment. E.g. using the “high idle” facility on a service truck whilst refuelling. Conversely, lower delivery head pressures are achieved by minimising static &/or dynamic head. NOTE: In any refuelling installation, it is recommended that the delivery head is minimised wherever possible. This creates a lower risk of premature nozzle shut-off, and decreases the required power output of the refuelling pump motor.

Technical Bulletin – L, MH and H Receivers 10/03

The Refuelling Specialists

A convenient method of adapting a number of vehicles refuelled by a single nozzle is to offer fuel receivers with different spring settings. Varying the receiver spring strength (load, force) has the same affect as changing the nozzle spring setting, as whilst the nozzle is in the ON position (open), the receiver spring counters the nozzle piston spring. Basically they oppose each other, whereby the receiver spring attempts to close the nozzle, the piston spring holds it open. Unfortunately, the design constraints on the receiver spring prevent the same scope of adjustment compared with the nozzle piston spring, but an acceptable range of adjustment is available. Due to the fact the receiver spring opposes the nozzle piston spring, a light (L) receiver spring will create a higher nozzle shut-off pressure, i.e. analogous to a higher nozzle spring setting. Conversely for the heavy (H) receiver spring, achieving a lower nozzle shut-off pressure.

(L)ight Receiver ⇒ Higher Nozzle Shut-Off Pressure Medium/Heavy (MH) Receiver ⇒ Lower Nozzle Shut-Off Pressure (H)eavy Receiver ⇒ Lower Nozzle Shut-Off Pressure

3. APPLICATIONS 1. Light Receiver: Applications for a light (L) receiver include equipment that exhibit higher delivery head pressures, and thus require a higher nozzle shut-off pressure in order to prevent premature nozzle shut-off. Such equipment may include large mining excavators, shovels, and even some larger mining haul trucks when refuelled from a remote point on the vehicle – i.e. as opposed to directly into the tank. 2. Medium/Heavy & Heavy Receivers: Applications for medium/heavy (MH) and heavy (H) receivers include equipment that exhibit lower delivery head pressures, and thus require a lower nozzle shut-off pressure in order to prevent overpressurisation of the fuel tank. Such equipment may include lighting plants, skid-pumps, drills and perhaps other equipment when refuelled using a Heavy (H) setting nozzle. Banlaw have recently designed receivers to cater for applications that require different receiver spring settings. Light (L), medium-heavy (MH) and heavy (H) options are available. RECEIVER SETTING Standard Light (L) Medium-Heavy (MH) Heavy (H)

∆ NOZZLE SHUT-OFF PRESSURE 0 kPa +15 to 20kPa - 15 to 20kPa - 25 to 30kPa

LEGEND: “∆” (delta) refers to the “change in” For example, a refuelling nozzle (e.g. BAM800M) achieving a tank pressure at shutoff of 70kPa on a vehicle fitted with a standard receiver (e.g. AUS23), will achieve a tank pressure of 85-90kPa if fitted with a light (L) receiver (e.g. AUS23L), and 5055kPa if fitted with a medium-heavy receiver (e.g. AUS23MH).

Technical Bulletin – L, MH and H Receivers 10/03

The Refuelling Specialists

4. PART DETAILS All receiver spring options are available in both 23 and 43 series Banlaw mining receivers.

<800LPM <1000LPM

STANDARD RECEIVER AUS23 AUS43

LIGHT RECEIVER AUS23L AUS43L

MEDIUM-HEAVY RECEIVER AUS23MH AUS43MH

HEAVY RECEIVER AUS23H AUS43H

Receivers can be visually identified in 2 ways: • Part number: stamped onto hex of receiver body • Poppet colour-coding: the following poppet colourings are used; o Light (L): BLACK o Standard: GOLD o Medium/Heavy (MH): SILVER o Heavy (H): SILVER

AUS23L

AUS23

AUS43MH

5. PRICING: The List Price for L, MH and H receivers is the same as the equivalent standard mining receiver. I.e. either AUS23, or AUS43. Further technical advice on the installation and operation of Banlaw equipment is available from Banlaw head office or an authorised Banlaw distributor. BANLAW PIPELINE PTY LTD - CONTACTS

SALES & MARKETING Nick FORAN [email protected] Mob: 0408 497212

Ph: 61 2 49714888 Fax: 61 2 49714910 www.banlaw.com.au PRODUCTION & FUELTRACK & QUALITY ASSURANCE ELECTRONICS Paul BUCKTON John GREGORY [email protected] [email protected] Mob: 0409 663072 Mob: 0408 492408

Technical Bulletin – L, MH and H Receivers 10/03

ENGINEERING (MECHANICAL) Adam PEATTIE [email protected]

The Refuelling Specialists