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January 4, 2004

                             ET NEWS 
======================================================================
        NEWS AND INFORMATION FOR ENGINEERING TECHNICIANS
----------------------------------------------------------------------
Issue No. 132 || http://etnews.org  mailto:mike@etnews.org || 1-4-2004
======================================================================

Contents
--------
- News
- ET Journal
- Job Opportunities
- Fire Alarm Class Schedule
- Comments & Acknowledgements

======================================================================
NEWS 
======================================================================

Doug Hockinson http://www.phpvs.com worked his magic on the ET News
web site and spruced it up for the new year. Thank you Doug!

----------------------------------------------------------------------

Good morning Mars!
Live video http://www.nasa.gov/ram/35037main_portal.ram

Use the same tools NASA uses:
http://mars.telascience.org/

----------------------------------------------------------------------

12-YEAR-OLD, mother escape fire
Suwannee Democrat, FL
A 12-year-old Live Oak boy and God are being credited by family with
saving the son's life and his mother's life after a fire alarm
awakened the boy when a ...
http://www.suwanneedemocrat.com/articles/2004/01/02/suwannee/news01.txt

----------------------------------------------------------------------

FAMILIES file lawsuit in 2000 apartment fire
Seattle Post Intelligencer, WA
... apartment fire are suing the owners and managers of the complex,
alleging that they failed to provide "a reasonably safe" facility and
an effective fire alarm ...
http://seattlepi.nwsource.com/local/155170_apartmentlawsuit03.html

----------------------------------------------------------------------

FIRE guts West Chester University fraternity house
Penn Live, PA
A fire alarm went off in the Kappa Delta Rho fraternity house around 1
am Thursday, when three students were inside watching television. ...
http://pennlive.com/newsflash/pa/index.ssf?/base/news-11/1073042040237
240.xml

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WIN-WIN lunch deal turns sour in court
Sydney Morning Herald, Australia
... The four diners were major players in fire protection, providing
sprinklers and fire alarm systems in the booming NSW building industry.


----------------------------------------------------------------------

WOMAN injured in house blaze
Coventry News, UK Station officer Kevin Rogers added that the fire
could easily have ended
in tragedy if the woman had not installed a fire alarm in her Mount
Nod home. ...
http://iccoventry.icnetwork.co.uk/0100news/0100localnews/content_objec
tid=13772711_method=full_siteid=50003_headline=-Woman-injured-in-house
-blaze-name_page.html

----------------------------------------------------------------------

WORKING fire alarm saves family, official says
WCNC (subscription), NC
By 6NEWS staff. A fire alarm and a mans smart thinking helped
firefighters respond quickly to a house fire early Wednesday morning.
http://www.wcnc.com/news/local/stories/wcnc-123003-ds-workingfire.f692
5753.html

----------------------------------------------------------------------

SESSION TO OUTLINE CHANGES IN STATE FIRE CODE
Westerly Sun, RI
... Beginning in July, all places of assembly without required fire
alarm systems will have their maximum occupancy slashed by 10 percent.
http://www.thewesterlysun.com/articles/2003/12/31/news/news2.txt

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FINES enacted for repeat false alarms
The News Journal, DE
Beginning Thursday, property owners in the state may be fined $100 if
their automatic fire alarm activates erroneously more than three times
in a year. ...
http://www.delawareonline.com/newsjournal/local/2003/12/30finesenacted
for.html

----------------------------------------------------------------------

A tribute to our armed forces: http://nathanadams.com/WeSupportU.htm

======================================================================
ET JOURNAL 
======================================================================

MODIFYING SMOKE DETECTOR SPACING DUE TO HIGH AIR MOVEMENT PART II
-----------------------------------------------------------------


Try this one on your own
------------------------

Determine the de-rated spacing (if any) for spot-type smoke-sensing
fire detectors to be installed in this room based upon air movement.

+-------------------------------------+ -
|     +-+     +-+     +-+     +-+     | ^
|     +-+     +-+     +-+     +-+     | |
| each air supply register = 200 CFM  | |
|     +-+     +-+     +-+     +-+     | |
|     +-+     +-+     +-+     +-+     | |
|                                     | 20'
|     +-+     +-+     +-+     +-+     | |
|     +-+     +-+     +-+     +-+     | |
|                                     | |
|     +-+     +-+     +-+     +-+     | |
|     +-+     +-+     +-+     +-+     | |
+-------------------------------------+ -

|<--------------- 32' --------------->|

Smooth and flat ceiling height = 10 feet
Air return = air supply


Step 1)
------

Determine the volume of the room in cubic feet:

Length X Width X Height = Volume
32 ft X 20 ft X 10 ft = 6400 ft^3

Room volume = 6400 ft^3


Step 2)
------
The drawing shows that each air supply vent provides 200 cubic feet
per minute (CFM) and that there are a total of 16 air supply vents. To
determine how rapidly the air in the room is turning over, we multiply
the air supply per vent times the total number of vents:

200 ft^3/minute X 16 = 3200 ft^3/minute

Air supply = 3200 ft^3/minute


Step 3)
------
How often is the entire volume of air in the room replaced?

Volume of the room (from step 1) = 6400 ft^3

Room air supply rate (from step 2) = 3200 ft^3/minute

6400 ft^3       1 minute
------------- X ---------
1 Room Volume   3200 ft^3
(air change)

Using algebra, the ft^3 units cancel each other out and we're left
with minutes per air change:

2 minutes / air change

or;

1 air change   60 minutes
------------ X ---------- = 30 air changes per hour
2 minutes      1 hour


Step 4)
------
At 2 minutes per air change (or 30 air changes per hour), Table
5.7.5.3.3 specifies 250 ft^2 spacing per smoke detector.

To determine spacing in linear feet, we have to find the square root
of 250 ft^2 = 15.8 ft.

[30 ft spacing -> 30 ft X 30 ft = 900 ft^2; sqrt of 900 ft^2 = 30 ft]

The modified spacing for this example is 15.8 ft.

======================================================================
JOB OPPORTUNITIES 
======================================================================

Fire Sprinkler Designer
-----------------------
Company name:  Honeycutt Fire Systems, L.P.
Company contact:  Cindy Richter
Phone:  (512) 989-1600 ext. 231
Fax:  (512) 989-1631
Email:  cindy@honeycuttfire.com

Honeycutt Fire Systems, L.P. seeks an experienced fire sprinkler
designer for the Austin, Texas area. Minimum NICET Level II
certification in automatic sprinkler system layout is required.  Must
be proficient in Autocad and Hydracad.  The applicant should have an
understanding of project design management, customer contact,
coordination with other trades, spec. preparation and field support.
We are seeking individuals with a can do attitude that will do what
it takes to get the job done.  Our office provides a team atmosphere
with up to date technology (full-size Xerox scanner and plotter, Dell
4 Cad workstations, Hydracad and Autocad software).  We offer
competitive salary and benefits package.  Please submit your resume by
e-mail to mailto:cindy@honeycuttfire.com or mail to:

2340 Patterson Industrial Drive
Pflugerville, Texas  78660

----------------------------------------------------------------------

If you have a job opportunity or are seeking employment, I'll place
your reasonably sized ad here for free. If you're looking for more
exposure, I'll place your ad on the web site
http://www.etnews.org/index.php?s=257 for $1 per week. Currently the
site receives 2,000 hits per day from 600 different computers.

======================================================================
FIRE ALARM CLASS SCHEDULE 
======================================================================

------------------
January 13-15, 2004 Houston, TX - Co-sponsored by TFAA
------------------
*NEW* -> Plan Review Seminar <- *NEW* 
*NEW* -> Advanced Fire Alarm Seminar (NICET III/IV) <- *NEW* 
http://www.afaa.org/afaa/PDF/PR_ADV_Houston_Jan2004.pdf

------------------
1/17, 1/31, and 2/14/2004 New York City - Conducted by NY AFAA
------------------
Intermediate Fire Alarm Seminar (NICET I/II)
Contact Mike Jennings at 201-963-4030 for more information. 

------------------
January 20-22, 2004 Albuquerque, NM
------------------
*NEW* -> Plan Review Seminar <- *NEW* 
Intermediate Fire Alarm Seminar (NICET I/II)
http://www.afaa.org/afaa/PDF/PR_IntFA_Albuquerque_Jan2004.pdf

------------------
January 27-29, 2004 Portland, OR - Sponsored by Oregon AFAA
------------------
*NEW* -> Plan Review Seminar <- *NEW* 
*NEW* -> Advanced Fire Alarm Seminar (NICET III/IV) <- *NEW* 
http://www.afaa.org/afaa/PDF/PR_ADV_Portland_Jan2004.pdf

------------------
January 29-30, 2004 Seattle, WA - Conducted by Dean Reed
------------------
NICET I & II Fire Alarm Test Preparation Seminar
http://www.etnews.org/pdf/NICET_I&II_DeanReed_JAN04.pdf

------------------
February 10-12, 2004 Dallas, TX - Co-sponsored by TFAA
------------------
*NEW* -> Plan Review Seminar <- *NEW* 
Intermediate Fire Alarm Seminar (NICET I/II) 
http://www.afaa.org/afaa/PDF/PR_IntFA_Dallas_Feb2004.pdf

------------------
February 24-26, 2004 St. Louis, MO
------------------
*NEW* -> Plan Review Seminar <- *NEW* 
Intermediate Fire Alarm Seminar (NICET I/II) 
http://www.afaa.org/afaa/PDF/PR_IntFA_StLouis_Jan2004.pdf

------------------
March 10-11, 2004 Wichita, KS - Sponsored by KS AFAA
------------------
*NEW* -> Plan Review Seminar <- *NEW* 
Inspection, Testing, and Maintenance of Fire Alarm Systems
More information is forthcoming.

------------------
April 6, 2004 Chicago, IL
------------------
*NEW* -> Plan Review Seminar <- *NEW* 
Intermediate Fire Alarm Seminar (NICET I/II)
More information is forthcoming.

======================================================================
COMMENTS AND ACKNOWLEDGEMENTS 
======================================================================

ET News is published weekly and almost always delivered on Sunday

ET News php/MySQL web site by Doug Hockinson http://phpvs.com

Engineering Technician info http://www.bls.gov/oco/ocos112.htm

The NICET acronym found herein refers to http://www.nicet.org
NATIONAL INSTITUTE FOR CERTIFICATION IN ENGINEERING TECHNOLOGIES

The AFAA acronym found herein refers to http://www.afaa.org 
AUTOMATIC FIRE ALARM ASSOCIATION "Join us in Charleston!"
----------------------------------------------------------------------
Some information may be found within this email message that is
reprinted with permission from one or more of the following; NFPA 70
National Electrical Code(r), NFPA 72 National Fire Alarm Code(r), NFPA
101(r) Life Safety Code(r), Copyright(c) NFPA, Quincy, MA 02269. This
reprinted material is not the complete and official position of the
NFPA on the referenced subject, which is represented only by the
standard in its entirety. 
======================================================================
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Some information may be found within this web site that is reprinted with permission from one or more of the following: NFPA 70 National Electrical Code®,NFPA 72® National Fire Alarm Code®, & NFPA 101® Life Safety Code®, Copyright© NFPA, Quincy, MA 02269.

This reprinted material is not the complete and official position of the NFPA on the referenced subject, which is represented only by the standard in its entirety.