Attachment_II_-_Detailed_Specifications.pdf

A&CC Diesel Laboratory Partial Flow DPM measurement system

Detailed Specifications

P a g e | 1

MSHA Approval and Certification Center Diesel Laboratory Detailed Specifications Document

Project Name:

MESD Diesel Lab Partial Flow DPM measurement system.

The MSHA Approval and Certification Center (A&CC) Triadelphia, WV, is seeking quotes for a Laboratory Partial Flow DPM measurement system for diesel engines tested according to the requirements of 30 CFR, Part 7 Subpart E (Diesel Engines Intended for Use in Underground Coal Mines).

OBJECTIVES: Obtain Laboratory Partial Flow DPM measurement system for testing the particulate emissions from diesel engines for purposes of approval of said engines for underground mine use, QA testing, and technical support of agency mission. The DPM system shall also be used in conjunction with after-treatment emissions control evaluations, engine emission field complaints, and other activities involving diesel emissions.

Provider of emissions bench will install and train lab personnel in the operation and maintenance of the equipment, and provide all necessary documentation for same.

The Laboratory Partial Flow DPM measurement system will meet or exceed the specifications found in the 30 CFR, Part 7, Subpart E, section §7.86 Test equipment and specifications:

https://www.ecfr.gov/cgi-bin/text-idx?SID=ca54db9e1d39480a81dc3533f56a66cb&mc=true&node=sp30.1.7.e&rgn=div6# se30.1.7_186.

This regulation details the specifications of a full-flow CVS system dilution tunnel and particulate sampling system, and this SOW is requiring a partial flow system. In order to meet the requirements of this specification to provide a system generating measurements comparable with the above regulation, the contractor bid must supply documentation to support the system’s equivalence with full flow system via test data, research papers, and/or certifications from standards or regulatory organizations to support the system’s equivalence.

The partial flow DPM measurement system will have documented comparability with results of full-flow CVS DPM systems and be capable of meeting EPA 40 CFR 1065 requirements.

See the accompanying Statement of Work for further information.

https://www.ecfr.gov/cgi-bin/text-idx?SID=ca54db9e1d39480a81dc3533f56a66cb&mc=true&node=sp30.1.7.e&rgn=div6#se30.1.7_186 https://www.ecfr.gov/cgi-bin/text-idx?SID=ca54db9e1d39480a81dc3533f56a66cb&mc=true&node=sp30.1.7.e&rgn=div6#se30.1.7_186 https://www.ecfr.gov/cgi-bin/text-idx?SID=ca54db9e1d39480a81dc3533f56a66cb&mc=true&node=sp30.1.7.e&rgn=div6#se30.1.7_186

P a g e | 2

Specifications:

The following information details the specifications required for installation and operation of system in the MSHA A&CC Diesel Laboratory. New system must meet or exceed these specifications.

General:

1. Only systems which are fully developed and have a proven track record in equivalent applications to that required by MSHA will be considered by MSHA.

2. The potential vendor shall supply a list of equivalent applications or current users of vendor's system which MSHA may contact and discuss the operation and success of the prospective system.

3. Particulate sampling system must meet the ISO 8178 definition of "total sampling system"; i.e. the measurement system extracts a small fraction of total engine exhaust for dilution and particulate extraction or equivalent.

4. System must meet ISO 8178-1 requirements for equivalency compared with U.S.

EPA full dilution test systems operated on a steady-state basis. Documentation of this equivalency testing must be supplied for review and include documentation operated on ISO 8178-4 with data taken concurrently between vendor's instrument and a full dilution system using 8-mode test cycle1.

5. The partial flow DPM measurement system will have documented comparability with results of full-flow CVS DPM systems during transient testing2, and be capable of meeting EPA 40 CFR 1065 requirements. Documentation of this capability may be similar to item 4 above using transient cycles.

6. System must be capable of accurate particulate collection, dilution air flow rate and sample flow rate control over a range of engine sizes, with minimal or no alteration of the system when testing different engines. The system will be used to test engines of less than 50hp up to 1000hp. Some type of documentation of the vendor's instrument capabilities within this power range will be provided with the bid.

7. Installation of the system at MSHA must entail minimal modifications to the current laboratory spaces and equipment at the testing facility. Systems which

1 Data can be from older model of same vendor’s system for these older steady state test applications, as long as newer system maintains the capability.

2 MSHA does not currently perform transient testing, but the capability is required for future testing applications. MSHA is aware that other equipment upgrades may be required (air, fuel, and exhaust flow measurement) in order to utilize this capability.

P a g e | 3 require major laboratory modifications, capital construction to house the system, or have serious impact on the laboratory infrastructure (power requirements, maintenance costs, etc.) will not be considered.

8. System must be capable of portability. This entails the ability to move the probe and dilution hardware between the two adjacent engine test stands at the MSHA facility. The control/support system(s) for the probe and dilution hardware must have the capability to be easily relocated within the test cell (s) or in the engine control room, at the operator's discretion. Therefore, self-contained rack mounting of the control system(s) are desired.

9. System must be capable of, and include, standalone computerized control of all system functions, and recording of all pertinent data relating to the particulate measurement test.

10. Vendor should be able to ship/deliver the particulate measurement system, install the system, and perform training of MSHA personnel within 180 days3 of MSHA issuing a purchase order for the system.

Accuracy, Repeatability, Correlation:

1. Sample flow measurement accuracy should be ±2% or better. In addition, calibration of the system flow measurement devices should be automated and multiple flow measurement devices should have a relative calibration better than ±1% of reading over the calibration range.

2. Repeatability of particulate measurement on a run-to-run basis should be demonstrated to have a Coefficient of Variation (COV) of ±5% or less for steady-state engine tests.

3. Repeatability of particulate measurement on a day-to-day basis should be demonstrated to have a Coefficient of Variation (COV) of ±5% or less for steady-state engine tests.

4. At a minimum particulate measurement system meets ISO 8178 equivalency criteria of 0.95-1.05 (average of seven 8-mode cycle weighted results agree within ±5% of full dilution 8-mode average results).

3 Some flexibility in scheduling installation/training will permitted to accommodate MSHA’s and vendor’s personnel availability.

P a g e | 4

Design:

1. Dilution chamber design must be physically small to allow ease of mounting or on a mobile stand if not mounted directly on the exhaust pipe. The chamber's design must incorporate elements that reduce or eliminate deposition on chamber walls from such effects as thermophoresis, electrophoresis, diffusion, and Soluble Organic Fraction (SOF) outgassing and absorption. Some documentary evidence of the dilution chamber's design advantages should be provided by the vendor for evaluation by MSHA with the bid.

2. Probes shall have a straight line path from the exhaust pipe to the dilution chamber, eliminating the potential for deposition of DPM on turning radii of the probe(s). If other arrangements are utilized, explain how this alternative minimizes DPM deposition.

3. Methods must be in place to "purge" or clean sampling system without disassembly when system is not collecting particulates in order to remove materials deposited on the sampling system while in use.

4. Filter housing shall be equipped for the use of 47mm filters (as singles or pairs).

5. Filter housing design should incorporate design features to minimize measurement errors resulting from filter mishandling and maintain proper filter spacing and support.

6. Diluted sample must be temperature controlled (actively maintained within the 42-52 °C requirement) and follow the conditioning requirements of EPA 1065, including a cyclonic separator, before reaching sample filters.

7. All systems supporting the sampling, dilution, and filtering of DPM will be housed in a self-contained cabinet(s) and include all hardware necessary to perform DPM measurements.

8. All connections between the cabinet sampling and dilution hardware will with flexible hoses and cables of length of a minimum of 40 feet if a remote installation is utilized. These connection lines will be included with the system and have connectors pre-installed.

9. All parameters associated with collecting DPM measurements must be controllable via stand-alone computer supplied with, or built in to the system.

The computer must control all sampling, calibration, and system monitoring and troubleshooting functions, as well as store test parameters and data. Access to the data via portable media must be provided for transfer to other lab systems.

10. Sampling system, dilution chamber, filter holder, and associated hardware shall not exceed a test cell space requirement of 10-12 square feet of floor space.

11. Control and instrumentation cabinet shall not exceed a 10 square feet floor space requirement in the test cell or control room.

12. Supply voltage for system will 120VAC with current at or below 30AMPS.

13. If shop air is required for system operation, the demand shall not exceed 100psi, and 10 SCFM. If extra filtration or shop air conditioning is required for the system, those extra components will be included with the system.

14. No other facility demand shall necessary beyond items above for powering, calibrating, operating the system.

P a g e | 5

Drawings, Schematics:

The following pages are from the 30 CFR, Part 7 Subpart E specifications for information purposes. They show the full flow CVS system, which the vendor’s system must demonstrate equivalency.

P a g e | 6

P a g e | 7

Figure 1: Laboratory Layout (more information supplied on request).

Typical location of exhaust pipe sampling

Location of System controls in control room

Interconnecting cables/hoses minimum ~40 feet.