ISSUE DATE: 06/20/2011 

PROGRAM INFORMATION BULLETIN NO. P11-43 

FROM: KEVIN G. STRICKLIN

 Administrator for 

 Coal Mine Safety and Health 

 LINDA F. ZEILER

 Acting Director of Technical Support 

SUBJECT: Reissue of P05-20 - Evaluation of Diesel Particulate 

 Matter After-Treatment Devices on Non-Permissible, 

 Heavy-Duty, Diesel-Powered Equipment, Compressors 

 and Generators 

Who needs this information?

This Program Information Bulletin (PIB) affects underground coal mine operators using 

diesel-powered equipment, manufacturers of diesel-powered underground mining 

equipment (including manufacturers of exhaust after-treatment control devices and 

systems), miners’ representatives, and Mine Safety and Health Administration (MSHA) 

personnel. 

Why is MSHA issuing this bulletin?

This bulletin explains how MSHA: 

1. Evaluates diesel particulate matter (DPM) aftertreatment devices on nonpermissible, heavy-duty, diesel-powered equipment, compressors and 

generators after January 1, 2006; and 

2. Reviews information available on high temperature disposable particulate filters 

(HTDPFs) and Paper/Synthetic filters accepted by MSHA as DPM 

aftertreatment devices. 

How will MSHA determine if a DPM control is effective

After January 1, 2006, MSHA will: 

1. Review information contained in the mine operator’s diesel inventory 

(inventory), as required to be maintained by 30 C.F.R. 72.520; 
2

2. Assess whether the DPM control’s collection efficiency selected for the diesel 

engine reduces the amount of DPM emitted to compliance levels; 

3. Evaluate the conditions under which the DPM device is being used; and 

4. Determine if those conditions are in accordance with the manufacturer’s 

specifications established for acceptance of the device as a DPM control. 

MSHA will evaluate whether a DPM filter is being used within the manufacturer’s 

temperature limitations by determining the exhaust gas temperature using the 

following test procedure: 

1) Conduct the test when the engine is producing the maximum exhaust gas 

temperature. This test condition should be the same as that established by the mine 

operator to conduct the undiluted exhaust emissions weekly test required under 30 

C.F.R. 75.1914(g). This test condition is normally produced using torque converter 

stall or hydrostatic transmission load. 

2) Measure the peak exhaust gas temperature in the undiluted exhaust using an 

electronic hand-held thermocouple instrument with a maximum 6 inch, J type 

thermocouple attached. 

3) Place the thermocouple into the undiluted exhaust stream using an exhaust port 

near the inlet of the DPM exhaust filter and after any exhaust cooling device. The 

exhaust port must be located to permit measurement of the exhaust gas temperature 

before entering the DPM aftertreatment device but after any exhaust cooling device. 

This may be the same port that the mine operator uses to determine the exhaust gas 

emissions concentrations for 30 C.F.R. 75.1914(g). (Note: the thermocouple must not 

touch the wall of the exhaust pipe and should be as close as possible to the center of 

the exhaust pipe.) 

4) Run the test for a minimum of 60 seconds to a maximum of 120 seconds or until the 

exhaust gas temperature is reasonably stable, whichever is less. 

5) Record the identification of the machine being tested, the engine's serial number and 

the peak exhaust gas temperature measured. 

What information is available on the filter efficiency and manufacturers’ 

specifications for use of filters accepted by MSHA? 

30 C.F.R. Section 72.501(c) establishes the DPM emissions limit for this group of dieselpowered equipment. Proper selection of the DPM control ensures DPM emissions are 

reduced to or below the established limit. The manufacturers’ specifications for the 

HTDPF and Paper/Synthetic filters accepted by MSHA provide data on the efficiency 

of the filter unit and the conditions under which the filter must be operated to attain the 

stated efficiency. 
3

For example, one manufacturer’s specifications for use of their currently accepted 

HTDPF states that 80 percent efficiency is obtained when the maximum exhaust gas 

temperature is maintained at or below 650 ̊F. The requirements of 30 C.F.R. Section 

72.503(d) would not be met if this HTDPF is used on machines that produce exhaust gas 

temperatures above 650 ̊F or are not maintained in accordance with the manufacturer’s 

specifications. Copies of the specification sheets for the two currently accepted HTDPFs 

are attached. 

What can be done if the exhaust temperature exceeds the DPM filter specifications?

The mine operator has several options. These include reducing the diesel exhaust gas 

temperature through a device such as a scrubber or heat exchanger to maintain the 

exhaust gas temperature within the established limits, or installing and maintaining 

other types of controls such as ceramic diesel particulate traps. 

Where can I find more information?

More information on diesel exhaust filters can be obtained from MSHA’s Diesel 

Particulate Rules Single Source Page (http://www.msha.gov/01-995/dieselpart.HTM) 

and National Institute for Occupational Safety and Health’s (NIOSH’s) Mining Safety 

and Health Research Topics (http://www.cdc.gov/niosh/mining). 

What is the background for this bulletin?

MSHA's diesel particulate matter rules for underground coal mines established new 

emission limits for DPM over a phased-in schedule. Aftertreatment devices must 

reduce DPM levels to those specified in 30 C.F.R. Part 72. MSHA provides information 

to assist mine operators in choosing the correct diesel particulate filter for their specific 

machine application. Equipment manufacturers and MSHA provide information 

concerning the limitations of DPM controls to reduce diesel particulate based on test 

data. Information concerning MSHA’s testing of DPM filters related to potential fire 

hazards is covered in PIB No. P11-43. 

Who are the contact persons for this bulletin?

Coal Mine Safety and Health, Health Division 

Robert Thaxton, (202) 693-9515 

E-mail: thaxton.robert@dol.gov

Technical Support, Approval and Certification Center 

Jeffrey Moninger, (304) 547-2324 

E-mail: moninger.jeffrey@dol.gov

What is the authority for this bulletin?

30 C.F.R. Part 72 Subpart D and 30 C.F.R. Part 75 Subpart T. 
4

Who will receive this bulletin?

Program Policy Manual Holders 

Miners' Representatives 

Underground Coal Mine Operators 

Special Interest Groups 

Attachment 
High Temperature Exhaust Filter 

For Diesel-Powered Equipment 

When you need a durable, 

high efficiency exhaust 

filter that q;;:ap~~nes d'i~]{5ifB,* 

Features 

• Reinforced filter media with wire 

backing maximizes performance 

and durability 

• WateNesistant filter media can 

eliminate the need for de-misters 

when used with water-bath 

exhaust conditioners 

• All materials are engineered 

to withstand high temperature 

operations and are 

non-combustible 

• High temperature gasket material 

insures proper sealing 

" Open-ended filter design allows 

for multiple filter operation 

(stacked end-to-end or side-byside) 

• Filter size maximizes performance 

and minimizes operating costs 

Accepted 

for use by 

MSHA* 

This proprietary design requires installation of a 

retrofit filter housing. An engineering drawing 01 

the filter is available upon request. 

Close-up of reinforced 

filter media 

Close-up of filter gasket 

Please read the CAUTION statement on reverse side 

before purchasing. 

• Meets U.S. Department of Labor, Mine Safety & Health Administration (MSHA) application criteria for 

permissible (MSHA Table I) engines that limit exhaust gas temperature to 302"F or less AN 0 non-perimissible 

(MSHA Table 21 engines that limit exhaust gas temperature to 650°F or less. 

Ref: www.msha.gov/Ol-995/Coal/DPM-FiiterEfflist.pdf 

Donaldson 
CAUTION! 

A 

Diesel emissions (such as carbon, unburned fueis, etc.) can ignite at 

temperatures below the rated filter limits. Ensure proper safeguards 

are in place to protect against damages resulting from ignition and/or 

uncontrolled regeneration. 

, ....... ~ .,-

Exhaust Filter Service Life 

Engine emission rates and exhaust temperatures affect overall filter life. Emission rates vary with 

many factors, including; engine age, level of maintenance, fuel quality, exhaust flow and duty 

cycles. Engines should be well maintained and calibrated regularly to maximize service life. 

Exhaust temperatures within MSHA's permissible application range have little or no impact on 

filter material life. Higher exhaust temperatures will degrade fi Iter materials over time. 

Specifications 

Product Attributes 

Part No.: P604516 

Dimensions 

Outer diameter: 12.74" (324mm) 

Inner diameter: 8.38" (213mm) 

Length: 26.00" (660mm) 

Weight: 16.5 Ibs. (7.5 kg) 

Exhaust Flow 

Maximum exhaust flow: 

400 acfm per filter 

Installation Guidelines 

• Do not use this filter in applications 

that produce exhaust gas temperatures 

at the filter inlet in excess of 650°F. 

• Position the filter housing and exhaust 

outlet to maintain a minimum 

distance of 12 inches from un-shielded 

flammable material. 

• Avoid localized areas of high exhaust 

flow through the filter element via 

a filter housing of an "end outlet" 

or multiple "side outlet" design. 

Multiple filters must be used to 

accommodate higher airflows. 

Contaminant collects on the inner liner 

of the filter (reverse flow filtration). 

The minimum total area of the side 

outlet(s} must be two times greater 

than the inlet section area. 

• Install an in-line temperature sensing 

device ahead of the filter housing to 

alert the operator should exhaust 

temperatures exceed 650°F. 

Maximum Pressure Drop 

40" H20 maximum pressure drop 

across the filter. Do not exceed total 

system backpressure limits as defined 

by the engine manufacturer. 

Donaldsonc 

Note: The filter media contains trace amounts of vegetable 

oils that may produce light smoking during initial heat· 

up. Individual components of the off-gassing have been 

analyzed and are non-toxic. 

Donaldson Company, Inc. 

Minneapolis, MN 

55440-1299 

www.donaldson.com 

Brochure No. F1t1132 (Aug. 2005) 1!l2005 Primed in the U.S.A. 

Equal Opportunity Employer 

Donaldson Company, Inc. reserves me rigl1t to changa or discontinue any model Of 

specification al any time and withoul nOliee-. 

North & South America 

800-374-1374 

Europe & Middle East 

32-16-38-3811 

Singapore 

65-6311-7373 

South Africa 

27·11-389-8800 

Australia 

612·4350·2033 
Rating Specifications 

Ma.KJemp fftIci.!mcy 

302'F 95% 

650'F 80% 

Part Number Size 

FST-115-26 26" Lx 12.75" 00 -- - FST-110-28 28" Lx 12.00" 00 

FST-125-26C 26"lx12.75" 00)(16" 00 (oonlcsl) 

.- FST-110-22C 22" Lx12.00" OOx10· 00 (conicsl) 

- FST-100-20 20" Lx 11" 00 

r-------

FST-90-16 16" Lx 9" 00 -----

Conditions of Use 

Do not clean filters. Return to Filter Service & 

Testing Corp_ for rebuild. 

Filters must be operated within the specified 

temperature limits to achieve filter efficiencies. 

The filter efficiencies at the maximum temperatures can be used for establishing compliance 

with 30 CFR, sections 72.500-72.502. 

FILTER SERVICE & TESTING CORP. 

3266 South 125 West· Price, UT 84501 

Phone: (435) 637-3567 

Fax: (435) 636-8203 

Cell: (435) 650-0360 

.,...t.~j.' " • to."", " ".~ _ r . -

J .. _.'W/t '. r;./· .., .. ;...../ , r.. f"".;.....li :,;.,..JJ!J j.,J . .;J 

.. f~. '.1 r -. , ,;J!) ..•... jJ, •.. 
Heavy Duty Metal Straps 

mechanically secures 

filter preventing failure in 

high temp applications 

Deep Pleated 

resulting in more 

surface area extending 

filter life 

Temp Fiberglass 

13 (non-flammable) 

Ie for applications 

Rebuildable 

resulting in 

significant cost saving 

up to 650· F