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W909MY-15-R-H001/W909MY-16-R-H002 DRAFT RFP QUESTIONS & ANSWERS
Questions are indicated by a black Q:
Answers are indicated by red A:
Q: The only response deadline I see is October 12th, 2015. Is this correct? If it is, 3 weeks is not enough time for us to provide all of the documentation requested, and gather pricing. Possibly we are not clear on if any of this is needed now or when a non draft solicitation is released. Please confirm.
A: This information will only be required once the Solicitation is released.
Q: I may have overlooked areas as it relates to payment. Is there a payment schedule in place? For instance the first part is a 32 month project for the design, test, and evaluation; and then an option for 28 months to actually execute the TDP. I'm curious to the goals / milestones that need to be achieved before expense can begin to be recouped.
A: No payment schedule is planned, all funds will be placed on contract with the corresponding Delivery Order.
Q: List of Items, Schedule of Requirements, Scope of Work, Terms of Reference, Bill of Materials required.
A: These items will be includes in the solicitation posting.
Q: Soft Copy of the Tender Document through email.
A: The solicitation posting will include a downloadable pdf of the tender document
Q: Names of countries that will be eligible to participate in this tender.
A: Please see FAR Subpart 25.7 for Prohibited Sources.
Q: Information about the Tendering Procedure and Guidelines
A: Will be included in solicitation posting.
Q: Estimated Budget for this Purchase
A: The Government will not be disclosing the estimated budget at this time.
Q: Any Extension of Bidding Deadline?
A: Extension of bidding deadline may be granted depending on the circumstances.
Q: For Past & Present Performance Section: Will the Excel spreadsheet (Chapter 1: Past Performance – Summary of Relevant Contract Experience) of Volume IV be counted as one page or none? Are Excel spreadsheets considered to be a table and therefore not required to be font size 12? Can they be reduced to no smaller than 8 as noted for tables?
A: Excel spreadsheets will not be counted as pages. Excel spreadsheets are not considered as Tables. Tables are referring to PDF files.
Q: If a Contractor does not have any “Past Performance - Subcontracts” or any “ Past Performance – Cure Notices / Show Cause” to address in Chapter 3 & Chapter 4 respectively, is it required to include these chapters and say not applicable? If yes, will the one page for each then count against the 20 page limit?
A: Section L states next to the Chapter 4 instructions “if required” so no need to include chapter 4 if there is no New Corporate Entities to report. “Past Performance – Cure Notices/Show Cause” are included in Chapter 2 of the current solicitation Section L and will not need to be provided if there are none. Chapter 3 – Subcontracts still requires the Offeror to provide an outline of how the effort required by the identified past performance solicitation was assigned for performance within the contractors corporate entity, even if there are no subcontractors proposed.
Q: Which of the four files or is a fifth file permissible to include the “title page, a table of contents, and the body of the proposal”.
A: Section L (2.A) states “Each volume shall consist of a title page, a table of contents, and the body of the proposal. The title page and table of contents will not be considered as part of the page count.” Please place this information at the beginning of each volume.
Q: What is the basis of the 20 page count for the Past Performance section?
A: The Evaluation Team feels that 20 pages is sufficient to demonstrate Past Performance.
| Q: | Tie and Feeder Outputs: The Tie and Feeder outputs are legacy items from the original design of the PDCs being daisy-chained. With the use of the PSC there is no real need to use either the Tie or Feeder outputs. Is there any real requirement for the Tie and Feeders being necessary on the PDC or may they be excluded from the design? |
| A: | The Government requirements are outlined in the PD and SOW. |
| Q: | Manual Operation: Manual operation of the generators still requires the DCS (engine/generator monitoring and protection functions) which in turn eliminates true manual operation. The inclusion of manual operation functionality just adds back in all the external switches and relays for the functions done in the DCS, thus paralleling the DCS and adding control panel complexity and operator interfacing. Can the manual functionality be “rolled” into the DCS? |
| A: | The Government requirements are outlined in the PD and SOW. It is up to the offerers how they implement the requirement |
| Q: | In paragraph 3.5.12.3.2 the paralleling cable length is 50 feet. However, in 3.7.2.1, the length is 25 feet. Which length is required? |
| A: | Length of the cable has been corrected in the PD |
| Q: | In paragraph 3.5.23.1 four output connectors are mentioned for each output (L1, L2, L3, N). That is true for the Tie Output. However, Feeder outputs are only 3-connector outputs. Are Neutrals now going to be required for the Feeder outputs? |
| A: | The PD has been updated to state the correct number of outputs |
| Q: | Hour Runtime Metering: In paragraph 3.5.12.2 there is a requirement for a resettable DCS runtime meter. In 3.5.12.2.4 there is a requirement for an external runtime meter that is resettable. If both displays are resettable, how is the operator to know actual total runtime hours on the engine? The DCS display can be resettable to match operational hours for the power unit. However, shouldn’t the external “total engine runtime meter” be a non resettable meter? |
| A: | The Government requirements are outlined in the PD and SOW. |
| Q: | Section L, Table of Contents requires using the Table of Contents feature in MS Word. |
How will this work in sections that have both MS Word and MS Excel documents in the same section? Our concern is that it will throw off the TOC function.
| A: | Every file that is built in MS Word must be submitted in PDF. So if the MS Excel file is not required as .xls per Section L 2.b Table 6, then the MS Excel file can be PDF as well and incorporated into the file. |
| Q: | When will the formal solicitation be issued? |
| A: | The formal solicitation will be released on FED BIZ OPS for release. |
| Q: | How many days are anticipated for completion of proposals after the solicitation is issued? |
| A: | The due date for the proposals will be listed on FED BIZ OPS. |
| Q: | Section B did not include range quantities for CLINs 1004 and 1005, should the ranges shown in |
the example of Section M C. 2. b. (1) be used? ( 1 – 4, 5 – 19, 20 – 50)
| A: | Documents have been updated to reflect the range quantities. |
| Q: | Will corrosion mitigation be listed as a separate CLIN due to the varying conditions of the GFE equipment? |
| A: | The SOW outlines the condition of the units, Offers should figure corrosion mitigation into their cost proposals. |
| Q: | The Extended warranty is not listed as a separate CLIN in Section B, should it be? |
| A: | Documents have been updated to reflect the extended warranty. |
| Q: | Paragraph 3.8.2.h states that we will need to complete control drawings for “off the shelf” items, however, Appendix C, section 5 the box next to Commercial Drawings is unmarked. Paragraph 3.8.2.h gives the impression that there should be an X in the box. Which is correct? |
| A: | The documents have been updated to reflect the change. |
| Q: | CDRL A023 calls for the development of the ETM in XML which we would have expected. However, CDRL A026 says "the contractor shall complete each Section, Chapter, Work Package IAW MIL-STD-40051 using .docx source files..." in other words Microsoft Word. Please confirm that the ETM should be developed in XML and not MS Word. |
| A: | The Government requires both XML and Word are required |
| Q: | CDRL A024, Block 16 reads “In Addition, one theory of operations system sample (.pdf and .docx source files) including narrative and supporting schematics, shall be included for the model of the generator set.” Does that mean a narrative and a schematic for both the C and D variants should be supplied? |
| A: | The Government has updated the documents to reflect the change |
| Q: | Does the Government have operational logs for the current fielded MEP-PU-810A and MEP-PU-810B? If so can they be provided to offerors? |
| A: | The Government does not have operational logs, systems will be provided as FMC as outlined in the SOW. |
| Q: | Does the Government have Usage Reports for the current fielded MEP-PU-810A and MEP-PU-810B that are transmitted by the using units? If so can they be provided to offerors? |
| A: | The Government does not have usage reports, systems will be provided as FMC as outlined in the SOW. |
| Q: | PD 6115-0132 3.5.1 States Emissions requirements as EPA Tier 2 non road mobile minimum. This is an obsolete emission standard that manufacturers are not able to currently manufacture as of January 1, 2015. Tier 2 non road mobile emissions requirements for engines of that size have been superseded by EPA Tier 4 Final. However, manufacturers currently manufacture engines of this size at an emission standard of Tier 2 Stationary. Is an EPA Tier 2 Stationary Unit acceptable? Or, is the resulting equipment going be covered by a National Security Exemption? |
| A: | The Government intent is to obtain the required NSE wavier when required. |
| Q: | EPA certified engines are based on the use of ultra-low sulfur diesel fuel, and are run at 1800 RPM (60Hz). The requirements state engines must be able to use Grade 1-D, 2-D, JP-5, JP-8, Jet A fuel sources, which does not apply to EPA certified emissions products. Is it acceptable that the provided engine only be emission certified using ultra-low sulfur and run at 1800 RPM per the EPA certification standard? |
| A: | The offerors shall follow EPA guidance to obtain EPA certification for the engine they select. The engines/system shall operate on all fuels listed in the PD. Primary fuel is JP-8 |
| Q: | PD 6115-0132/2 TABLE II states that the Axle Load of the recapitalized MEP-PU-810B shall meet all DOT requirements for highway transport. The current MEP-PU-810B is certified for highway transport through state DOT waivers, is this an acceptable solution, or is the intent to propose an axle configuration change? |
| A: | The Government does not intend to direct an axle configuration change. Current Axle is acceptable as long as the system meets the weight requirements outlined in PD and SOW. |
| Q: | Which vehicle or vehicles will be used as the Prime Mover for the trailers once the C & D models are fielded? |
| A: | Standard 915 trucks are currently on the MTOE of the 249th ENBN. |
| Q: | MIL-STD-3046 is called out in SOW paragraphs 3.5.4.2 and 3.5.4.3. The ASSIST database indicates that it was canceled on 6-1-15 with no superseding document. |
| A: | The Government has updated the documents to reflect the changes. |
| Q: | SOW paragraph 3.14.3.8 calls out FAR 52.210-7 which appears to be obsolete. Should it instead refer to 52.211-5 Material Requirements? |
| A: | The Government has updated the documents to reflect the change. |
| Q: | When completed do all the parts need to be the identical configuration? All A models need to be identical; all B models need to be identical. |
A: All systems need to meet the requirements as outlined in the SOW and PD.
Q: Does the existing Rear Impact Guard meet DOT regulations?
A: It is the Governments understanding that it meets the DOT requirements
Q: What is the Contractor requirement (if any) for disposition of the removed engines, generators, and other ancillary components (i.e., tires, batteries, etc.)?
A: Disposition is in accordance with 3.14.3.8 and IAW state and local environmental requirements
Q: Will the Army ensure that hazardous fluids (diesel fuel, motor oil, transmission fluid, antifreeze, etc.) are drained and disposed of prior to making the existing units available for shipment from the Government site to the Contractor’s facility?
A: The systems will be delivered in Fully Mission Capable (FMC) status as outline in SOW section 3.
Q: Does the page count limitation in Section L for Past Performance (20 pages) include the required Past Performance Questionnaire?
A: The questionnaire is included as part of the Past Performance page count.
Q: Section C paragraphs list data requirements by the Data Item Description (DID) number rather than their CDRL number. For example, DID DI-MISC-80711A is invoked by multiple CDRLs. Request that the Government identify the data requirements associated with SOW paragraphs by unique CDRL number rather than by Data Item Description.
A: The SOW identifies the data requirements for the for the recapitalization effort.
Q: The requirements for the Performance Risk Assessment Questionnaire state that the questionnaires must be received within 14 calendar days of the release of the RFP. Request that the deadline is extended to the due date of the solicitation.
A: The Government has identified its requirements for the risk assessment.
Q: CDRL A023 Block 5 lists para 3.14.4.3.1. This paragraph does not exist in SOW.
A: The CDRL has been corrected to state paragraph 3.14.3.2 .
Q: CDRL A028 Block 5 lists para 3.14.8.8. This paragraph does not exist in SOW.
A: The CDRL has been corrected to 3.14.7
13. CDRL A028 para 3.14.8.1 lists DID DI-SESS-81874. This does not match block 5 of CDRL A028.
A: The CDRL has been updated.
Q: The RFP and attachments do not identify the locations of the existing units to be refurbished. Also, the required shipment location(s) for refurbished units is not identified. This would indicate that the Government will be responsible for delivering existing units to the Contractor refurbishment site and for shipping the new units to the required destinations. Please confirm that the Government is responsible for incoming and outgoing shipping of the PPUs, or provide specific locations so that the Contractor can establish shipping costs.
A: The SOW has been updated to reflect that the government shall be responsible for the movement of the units SOW 3.2.3.
| Q: | How can we obtain a copy of MIL-STD-2169 - High-Altitude Electromagnetic Pulse (HEMP) Environment? |
| A: | All requests have to go to: |
Defense Threat Reduction Agency, 8725 John J. Kingman Road, Stop 6201, Ft. Belvoir, VA 22060. The point of contact is Mr. Michael Rooney at michael.rooney@dtra.mil.
Questions on Purchase Description (PD) 6115-0132:
Q: Paragraphs 3.5.9.1 and 3.5.9.1.4 require the use of the Enduraseal VPI process on the generator windings. Enduraseal is a trademarked name with a limited vendor base and is usually used on generator and motor rewinds. If it is determined that a new generator would be more cost effective than a rewound SR4B – can the generator manufacturer’s VPI process be used if it meets all of the performance and testing requirements stated in the PD and includes a 5-year warranty?
A: The alternators either new or rewound must meet the requirements as outlined in the PD and SOW.
Q: Since the current EPA requirement for off-road diesel engines is Tier IV, the use of a Tier II engine will require an emissions waiver. Is the Army going to obtain this waiver for the selected vendor?
A: The government’s intent is to obtain the required NSE wavier if required. =
Q: The Statement of Work states that six (6) total MEP-810 (3ea “A” and 3ea “B”) units will be used for the Design, Test and Evaluation phase. Paragraph 3.5.12.1.1 requires the ability to parallel up to sixteen (16) MEP-810 units. Does the Army envision that the Appendix D testing requirement for running a minimum of four (4) units in parallel is sufficient to prove the ability to run 16 units in parallel?
A: The government will accept verification by analysis during first article phase. 16 unit tests will be conducted during first production run.
Q: Paragraph 3.5.29.1 a.197011 requires that the fuel tank capacity be 120 gals and also requires that the MEP 810 run for 2 hours at full load without refueling on this fuel. Preliminary calculations of the fuel consumption of candidate engines indicate that 120 gals of JP-8 may not be sufficient to run 2 hours. Can the capacity of the fuel tank be increased to meet the 2-hour requirement if required?
A: The offeror’s may modify the system as required for their proposals to meet the requirements in the PD and SOW.
Q: Question on Purchase Description (PD) 6115-0132/1 and /2: Do the MEP-810A/B units currently meet the performance requirements of paragraphs 3.5 and 3.6 and sub-paragraphs?
A: The current engines in the DPGDS system are TIER I EPA compliant, so they do not meet the requirements of the PD and SOW.
Q: Section C, Scope of Work (SOW) section 3.8.1; requirement states, ”Product level drawings are necessary to enable the Government to competitively purchase all end items, and support logistic activities of fielded items.” Is it the government’s intent that the supplier creates a part drawing for every component within the system regardless if the part needs to be replaced? Example, creation of sheet metal drawings for the entire structure even though sheet metal parts may not be replaced as part of the capital reset.
A: It is the government’s intent to buy a complete system TDP drawing package which will include all drawings for both the C and D model units
Q: Section C, SOW section 3.8.2; Drawing Submittal Requirements, is it necessary to recreate drawings that exist from the previous equipment if they do not meet all of the requirements of this section?
A: Drawings need to meet the requirements outline in the SOW
Q: DD254 RECAP V2; clarification that it is necessary for the prime contractor to have “secret” level clearance [MIL-STD 2169]?
A: Contractor must meet the requirements outlined in the contract.
Q: SOW 3.1.1 First Articles. “The vendor will apply the MWO and return the recapitalized PPUs to the government’s possession.” Who pays for the return transportation costs?
A: It is the Governments intent to ship units.
Q: SOW 3.1.4 Upgrade Control Components. There are two Feeder Outputs and one Tie Output in the PDC. It is our understanding that the feeder circuit is no long used since the Primary Switch is part of the system. What is the purpose of the feeder in the system now?
A: The PD and SOW has been updated to outline the Governments requirements.
Q: Can the feeder circuit components be removed?
A: Same as above, Documents have been updated.
Q: If a feeder output is still required, can one of the two be removed?
A: Same as above, Documents have been updated.
Q: SOW 3.9.3.2 Pre-Production Examination, para. 8) Utility paralleling demonstration. Who is responsible for making the arrangements with the utility company and cable connections?
A: Contractor is responsible to demonstrate the capability
Q: SOW 3.9.4 Production Commissioning Inspection Test (PCIT) (Production Phase). The Government will conduct a PCIT on each individual recapitalized PPU IAW PD 6115- 0132, Table I, and this SOW. The test will include but not limited to:
a. Maximum Power Test; Volt/frequency transients Test
b. Safety Warning and Shutdown Test
c. Paralleling of eight (8) engine generator units (PPU) Test
d. Overload Test; 50 Hertz Test
e. Economizing Function Test - Should this be Table II of both the /1 and /2 PD cut sheets? Since the tests listed do not specify a particular test or requirement, is the contractor responsible to meet? If so, what are the parameters
A: Test will replicate the functions outlined in the PD 3.5.12.1.6.
Q: Purchase Description Summary (PDS), Section 3.5.1.10 Fuel consumption; “Fuel consumption using JP-8 shall be no greater than 30 gals per hour (GPH) per engine at full load (60 GPH, 100% load two engines) (Objective 10% reduction). Primary 521 fuel shall be JP-8/F-24.” The current Caterpillar 3456 consumption is in excess of this requirements when running JP-8 fuel thus current fielded units will not meet this requirement. As a capital reset of current assets is this 30 GPH the intended requirement?
A: The system shall meet the requirements outlined in the PD and SOW.
Q: PDS, 3.5.4 Cranking system. The cranking system shall be 24 volts direct current (DC), negative ground. The set shall not be damaged (see 6.4.2) in the event that the polarity of the battery cables is reversed. It shall not be possible to crank the set with the battery polarity reversed. Does the Government have a solution in mind for battery polarity sensing? Almost all generator sets and vehicles used on the nation’s highways lack this feature. This will be an added special or unique feature.
A: Fielded E2S2 systems have this capability currently, TQG, LAMPS and AMMPS.
Q: PDS, 3.5.7.1 Standard starting aids (ether or glow plugs). For temperatures between - 6ºC (20ºF) and 32ºC (-25ºF) standard starting aids shall be used. If ether is selected, the starting aid system shall be automated to inject a measured shot of ether based on ambient temperature and cranking conditions. The systems shall be compatible with the ether tank depicted on drawing 30554-69-77776 and ether bottle bracket depicted on drawing 30554-69-777. They shall be permanently installed in each set in a location that permits installation and removal of the ether tank without the use of tools. The measured shot of ether shall be as recommended by the engine manufacturer. An electrical interlock shall be provided such that the ether starting aid will be inoperative unless its switch is automatically activated concurrently with cranking of the engine. The ether tank shall not be a component of the set and shall be furnished only on Test Articles (see 3.2). Production sets shall be furnished without ether tanks. Clarification that it is the government’s expectation the supplier does not supply cold weather starting feature on production units?
A: All units will have winterization kits per PD 3.5.7.2.
Q: PDS, Appendix A, Apparatus. Will the required M17 Lightweight Decontamination System NSN 4230-01-251-8702 be provided as Government Furnished Equipment for use on the program?
A: The Government will not be providing M17 decontamination system as GFE.
Q: PDS, 6115-0132 Lines 21-22. Will droop paralleling be a satisfactory method for paralleling new units with legacy MEP-PU-810A/B sets?
A: Droop is an acceptable method.
Q: PDS, 6115-0132 Lines 394-395. When stating that "Each PPU contains two independently controlled generator sets that can operate independently or in parallel, in isochronous speed and voltage droop modes", does this imply that each generator can be loaded independently? The present electrical configuration would prevent this.
A: There is no requirement that states the units be loaded independently. Units can be operated independently and paralleled to a common buss.
Q: PDS, 6115-0132 Lines 889-900. Is it safe to have automatic start and stop features such as "Economizing" mode active by default when in auto, or should there be provisions to have a user confirm this operation upon switching to auto mode?
A: The requirements for the Economizing mode are outlined in PD 3.5.12.1.6.
Q: PDS, 6115-0132 Lines 889-900. What type of control should be used to enable/disable the automatic starting/stopping feature, i.e. unit will no longer start based on load demand, either through enabled or disabled economizing?
A: The ability to isolate a unit is up the offerer/contractor to determine, depends on which control system is selected by the offerer.
Q: PDS, 6115-0132 Lines 1032-1934. What is expected of self-diagnosis on all system line replaceable units (LRUs) during startup?
A: The system shall identify any faults within the LRU’s
Q: PDS, 6115-0132 Lines 1026-1030. Is the unit required to parallel to live sources, utility or other PPUs, through either of the feeders?
A: There is no requirement in the PD to allow for paralleling through the feeders.
Q: PDS, 6115-0132 Lines 1026-1030. What is the intended operation when paralleling to a utility?
a. Control the amount of utility power used
b. Base load the generator sets on the system to support utility
c. Use the generator sets to back up utility in case of present or imminent failure.
A: Yes to all above
Q: PDS, 6115-0132 Lines 1026-1030. Will a signal be present to indicate the position of the utility contactor?
A: Depends on system but usually No. Breakers/switches will be controlled by the assigned operators.
Q: PDS, 6115-0132 Lines 1026-1030. Will testing the transient response be performed at unit (2 generators) or individual generator level?
A: Single and two unit operation.
Q: PDS, 6115-0132 Paragraphs 2.2.1. There was a revision listed for each specification in the previous draft. There is no revision listed in the current draft. The revision level is important to know what revision is being used and can have an effect on the cost to comply. Will the revision level be re-inserted in the final PD?
A: The latest versions will apply, Revisions will not be added to the PD. The current revision at time of award is the revision that should be used.
Q: PDS, 6115-0132 Paragraph 3.5.12.3.2 Automatic paralleling. Each generator set (GENSET) shall ... Paralleling cables, if required, shall be provided with each PPU and shall be 50 feet in length. Paragraph 3.7.2.1 calls for the cable to be 25 feet. Which is correct?
A: The PD has been updated to reflect the correct length.
Q: PDS, 6115-0132 4.7.22.1 Permissive paralleling test. PPU (see 3.1) shall be parallel tested IAW 630.1 of MIL-STD-705 with the following changes: b. Verify that two or more generator sets of the same mode will not parallel until the voltage difference of the same phase is less than 8 volts [an acceptable meter error of plus or minus 1% on a 4160 volt machine that is equivalent to 41 volts]. In order to meet 8 volts, the meter would have to be +/- 0.2%. Is this the intent?
A: The PD has been updated to reflect the requirement.
Q: PDS, 6115-0132 Test Schedule. The MIL-STD-705 does not address how to test when the generator set has two engine/generators within the same housing. When testing, is the contractor to:
a. Test just the individual engine/generators only [two tests per trailer (test each engine/generator separately)]?
A: Step C
b. Test the entire trailer with both engine/generators operating together [one test with both engine/generators operating together per trailer]?
A: Step C
c. Test the individual engine/generators and then test the entire trailer with both engine/generators operating together [three tests per trailer]?
A: The system will be tested as a single engine Gen and as a complete system.
d. In addition to performing one of the configurations above, each test is conducted in 50 Hz and then 60 Hz, doubling the number of test configurations per listed test. Is this correct? A: The system will be tested at both 50 and 60 Hz as outlined in the PD and SOW.
Q: PDS, 6115-0132/1 A-Model PD Paragraph 3.4 Materials. … designed to meet all Department of Transportation (DOT) requirements for highway transport, The A-model was not designed for highway use, therefore it is does not meet DOT requirements. Does the A-model need to be redesigned to meet DOT requirements?
A: Axles are DOT compliant. Intent is that the material used meets DOT specs. Does not have to be DOT Certified.
Q: PDS, 6115-0132/2 B-Model PD Paragraphs 3.5.8 Landing gear. Landing gear shall support the fully loaded PPU while operating, and shall withstand, without damage, the strains imposed upon it, when coupling or uncoupling the towing vehicle, and raising or lowering the fully loaded PPU. The landing gear will retract to enable the PPU to be loaded on C-5, C-17, and C-141 military aircraft. C-141 aircraft are not called out anywhere else. Is this a requirement?
A: The Government has updated the documents to reflect the change .
Q: Appendix A, GFP. Will a Primary Switch be provided for PPT testing and if necessary, commissioning test acceptance?
A: The Government does not intend to provide a PSC switch as GFE equipment at this time.
Q: Appendix A, GFP. “Communication Cables.” What cable is this, the ORT communication or the unit to unit paralleling cable?
A: Communication Cable is the interconnect cable between units.
Q: PDS, 6115-0132 3.5.20.5 Over/Under Voltage; Is the Over and Under voltage really supposed to be 20 and 30% for a Medium Voltage set? Present day settings in the DPGDS manual lists the settings for over and under voltage as 10 %. PD wants; warnings at 20% over and under and shutdowns at 30% over and under. The actual present day settings seem to low since they interfere with the voltage adjustment range, but 20% & 30% seems high for a MV set. Surge arrestors and M.O.V. protections will need to be that much higher for 30% Over Voltage.
A: The Government has updated the documents the documents to reflect the change. The over/under voltages setpoints shall be adjustable.
Q: PDS, 6115-0132 4.6 & 4.6.1 Commissioning Inspection & Tests; Question: Production tests will perform tests under column 3. Does this include:
a. Maintainability Demonstration 4.7.17
b. TM 625.1 Short Circuit Mechanical strength. 3.5.9.2 (normally a Generator Only Test).
c. Size and Weight 4.7.33
d. Voltage and Frequency Drift 4.7.35
e. Wet Stacking 4.7.36
A: Commissioning test will replicate some of the APG tests, not all tests will be replicated during the commissioning testing.
Q: We have seen material that the EnduraSeal insulation system is a requirement. Leroy Somer was part of Reliance Electric when this technology was developed by Reliance Electric Service Centers then IPS purchased the service centers in 2007. May our insulation system will be submitted as an alternative?
A: No. The SOW and PD specifically calls out the Government's requirement to use the EnduraSeal process. The original system was furnished with CAT SR4B (Leroy Somer) alternators. The system experienced significant failings in the harsh environmental conditions that these systems operate in. In response, the Government utilized the EndurSeal process on the SR4B systems; for the last five years it has proven highly reliable in the harsh, 24/7/365 environment.
Q: We have also seen the water immersion test requirement. Can you tell me where this requirement initiated? A spray test is also allowed by the standard. Can you tell me if that would be acceptable?
A: The water immersion test requirement will be outlined in the PD. As a result of the harsh conditions the DPGDS is required to work in, the water immersion test will be utilized to ensure that there are no voids in insulation/windings.
File details come from the government source that posted it. Updated .