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Document title: The EPU - how does it work and why hydrazine? - F-16.net - The Ultimate F-16 Reference
Original URL: http://www.f-16.net/f-16_forum_viewtopic-t-1056-start-75-sid-4a87cd2c4d4ea1a88cac66341ab2685b.html
Printed on: 19 November 2008

Forum: F-16 Design & Construction

The EPU - how does it work and why hydrazine?



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Davy
PostPosted: Jul 14, 2007 - 09:59 PM Reply with quote Back to top
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ViperEnforcer wrote:
That's one of the main design faults of the F-16A's. At least the Engineers alleviated the EPU activations due to main power loss, with the advent of the 10 KVA Standby generator on all C/D Models.


While the standby generator does add another power source, it does not eliminate EPU activations due to power loss...they can be pilot (or engine operator) induced. For all F-16s, even the C/D and E/F, with the engine turning and the EPU switch in NORM, if the pilot (or engine operator) places the MAIN PWR switch to BATT with the EPU safing pin pulled, the EPU will fire. The EPU will also fire if the MAIN PWR switch is placed to OFF, but is in the BATT position for approximately one second.
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dmac
PostPosted: Jan 25, 2008 - 12:02 PM Reply with quote Back to top
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loss of power on the Essential bus to be specific that comes from the #1 BPC which gives the ARMED signal to the Standby GCU. The standby GCU is what fires the EPU.......EPU control relay===to the EPU power lock relay...... Damn I miss the 16!!!!!
DMAC-ex E/E FTD!!!!!!
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Zappy
PostPosted: Feb 27, 2008 - 08:46 PM Reply with quote Back to top
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Since no one has replied to my post on the parent forum, I thought I would ask it here.

I was told that the Japanese F-2 used JP-8 for the EPU instead of sticking with the hydrazine in the normal F-16 designs. Any reason why they would move to a slower burning fuel?
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huagulong
PostPosted: Sep 18, 2008 - 09:25 AM Reply with quote Back to top
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does anyone has a complete msds of h70? i've can only find a copy with 12 sections. As i was told, msds should come in 16 sections. correct me if i'm wrong.
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That_Engine_Guy
PostPosted: Sep 18, 2008 - 10:33 PM Reply with quote Back to top
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What are you looking for?

http://www.msdshazcomonline.com/MSDS/HMIS/048/BXNYT.HTM

--Edit-- Added this MSDS stuff...

Quote:
The OSHA MSDS format has the following required categories that must be on every MSDS (per OSHA Form 174):

Section I. Manufacturer's Name and Contact Information
Section II. Hazardous Ingredients/Identity Information
Section III. Physical/Chemical Characteristics
Section IV. Fire and Explosion Hazard Data
Section V. Reactivity Data
Section VI. Health Hazard Data
Section VII. Precautions for Safe Handling and Use
Section VIII. Control Measures

The American National Standards Institute (ANSI) approved an alternative format and published a standard Z400.1-1993, "American National Standard for Hazardous Industrial Chemicals-Material Safety Data Sheets-Preparation."

The 16 sections of an MSDS that are prescribed by the ANSI standard are as follows:

Section 1. Chemical Product & Company Information
Section. 2. Composition/Information on Ingredients
Section. 3. Hazards Identification
Section. 4. First Aid Measures
Section. 5. Fire Fighting Measures
Section. 6. Accidental Release Measures
Section. 7. Handling and Storage
Section. 8. Exposure Controls/Personal Protection
Section. 9. Physical and Chemical Properties
Section. 10. Stability and Reactivity
Section. 11. Toxicological Information
Section. 12. Ecological Information
Section. 13. Disposal Considerations
Section. 14. Transport Information
Section. 15. Regulatory Information
Section. 16. Other Information

While this is a recommended format, it is important to note that at a minimum, the OSHA required categories must be addressed in the MSDS as these are legally enforceable (in the US).

MSDS's in ANSI format have a few distinct advantages over those prepared using the standard OSHA Form 174 format:

1. ANSI-format sheets have all of the information required on the OSHA 174 format sheets as well as additional useful information.

2. The information on an ANSI format sheet is arranged in a consistent format whereas OSHA has no format requirements, only content requirements.

3. ANSI format is likely to be consistent from country to country, possibly permitting one to use the same MSDS in different markets without modification (Hey, a standard! Imagine that).


Keep 'em flyin' (Safely) Thumb
TEG
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huagulong
PostPosted: Sep 19, 2008 - 07:56 AM Reply with quote Back to top
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That_Engine_Guy wrote:
What are you looking for?

http://www.msdshazcomonline.com/MSDS/HMIS/048/BXNYT.HTM

--Edit-- Added this MSDS stuff...

Quote:
The OSHA MSDS format has the following required categories that must be on every MSDS (per OSHA Form 174):

Section I. Manufacturer's Name and Contact Information
Section II. Hazardous Ingredients/Identity Information
Section III. Physical/Chemical Characteristics
Section IV. Fire and Explosion Hazard Data
Section V. Reactivity Data
Section VI. Health Hazard Data
Section VII. Precautions for Safe Handling and Use
Section VIII. Control Measures

The American National Standards Institute (ANSI) approved an alternative format and published a standard Z400.1-1993, "American National Standard for Hazardous Industrial Chemicals-Material Safety Data Sheets-Preparation."

The 16 sections of an MSDS that are prescribed by the ANSI standard are as follows:

Section 1. Chemical Product & Company Information
Section. 2. Composition/Information on Ingredients
Section. 3. Hazards Identification
Section. 4. First Aid Measures
Section. 5. Fire Fighting Measures
Section. 6. Accidental Release Measures
Section. 7. Handling and Storage
Section. 8. Exposure Controls/Personal Protection
Section. 9. Physical and Chemical Properties
Section. 10. Stability and Reactivity
Section. 11. Toxicological Information
Section. 12. Ecological Information
Section. 13. Disposal Considerations
Section. 14. Transport Information
Section. 15. Regulatory Information
Section. 16. Other Information

While this is a recommended format, it is important to note that at a minimum, the OSHA required categories must be addressed in the MSDS as these are legally enforceable (in the US).

MSDS's in ANSI format have a few distinct advantages over those prepared using the standard OSHA Form 174 format:

1. ANSI-format sheets have all of the information required on the OSHA 174 format sheets as well as additional useful information.

2. The information on an ANSI format sheet is arranged in a consistent format whereas OSHA has no format requirements, only content requirements.

3. ANSI format is likely to be consistent from country to country, possibly permitting one to use the same MSDS in different markets without modification (Hey, a standard! Imagine that).


Keep 'em flyin' (Safely) Thumb
TEG



where do u get that quote from? btw, thanks a lot for that msds.
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