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NATIONAL ACCOUNTS GROUP P.0, Box 5980
Engineering Division Denver, CO 80217-5980
3/12/91
Mr. Gordon Lacy, Bd. of Comm.
Weld County
c/o Colorado Counties, Inc.
P 0 Box 758
L_ Greeley, CO 80632
Location Surveyed: Per attached list
Person Contacted: Mr. Steve Boeck, NVAC
Date of Survey: 2/26/91
Coverages: Boiler & Machinery
Producer: Rollins Burdick Hunter of Colorado
Mr. Lacy:
This letter confirms my external operating inspection of the boilers and water
heaters at locations on the following list:
Centennial Center
COLO 31755 KEWANEE F.T. BOILER - MAWP 100 PSI - RV SET 100 PSI
COLO 31756 KEWANEE F.T. BOILER - MAWP 100 PSI - RV SET 100 PSI
Courthouse Annex
COLO 19158 AMERICAS STANDARD C.I. BOILER - MART 15 PSI - SV SET 15 PSI
COLO 2879 AMERICAN STANDARD C.I. BOILER - MAWP 15 PSI - SV SET 15 PSI
Weld County Library
COLO 7752 HYDROTHERM C.I. BOILER - MART 30 PSI - RV SET 30 PSI
COLO 12790 HYDROTHERM C.I. BOILER - MART 30 PSI - RV SET 30 PSI
COLO 7749 HYDROTHERM C.I. BOILER - MART 30 PSI - RV SET 30 PSI
COLO 7744 HYDROTHERM C.I. BOILER - MAWP 30 PSI - RV SET 30 PSI
COLO 7743 HYDROTHERM C.I. BOILER - MAWP 30 PSI - RV SET 30 PSI
Headstart School
COLO 17867 HYDROTHERM C.I. BOILER - MART 100 PSI - RV SET 30 PSI
This report is based upon conditions and practices observed and information supplied by management personnel at the time of this visit.It does not purport to list
all hazards nor to indicate that other hazards do not exist nor is it an endorsement of procedures, practices, or products and no authorization is granted for
promotional or endorsement purposes.Surveys and recommendations made by The Travelers are advisory and designed to assist customers in the establishment
and maintenance of their own safety activities. The Travelers assumes no responsibility for management and control of these activities nor for the correction of the
conditions pointed out herein.
C-19102 Printed in U.S.A. _
R288 -
136P, e aif �� �, 911271
Page 2
Alcohol Recovery Center
COLO 6253 BRYANT C.I. BOILER - MAW 15 PSI - SV SET 15 PSI
Weld County Human Resources
COLO 14843 BURNHAM C.I. BOILER - MAME 50 PSI - RV SET 50 PSI
COLO 14841 BURNHAM C.I. BOILER - IMP 50 PSI - RV SET 50 PSI
COLO 14846 BURNHAM C.I. BOILER - MAW 50 PSI - RV SET 50 PSI
Motor Pool. Service Center
COLO 1192 PVI STGE. WiR. HTR. - MAIM 125 PSI - RV SET 125 PSI
COLO 1196 JARCO COIL WPR. HTR. - MAWP 160 PSI - RV SET 150 PSI
South County Service Center, Fort Lupton, CO
COLO 27910 HYDROTHERM C.I. BOILER - MAME 100 PSI - RV SET 30 PSI
Safety/relief valves tested satisfactorily on all of these vessels. Low water
fuel cutoff protection on the steam heating boilers, and the boiler at the
Fort Lupton service center was manually tested and found operative at this
time. Electric probe low water fuel cutoff units on some of the other vessels
can be tested by the TEST switch and, where that was the case, we found it to
be in satisfactory condition. No indication of leakage or overheating was
apparent on any of the units.
The following recommendations are submitted. The 91-1 recommendation, marked
IMPORTANT, should be completed prior to the 1991-92 heating season. Please
call me if you have any questions concerning the inspections or
recommendations.
RECOMMENDATIONS
91-1 IMPORTANT The Alcohol Recovery Center boiler, COLO 6253, is connected
to a pumped condensate return system and should have a second low water
fuel cutoff provided. This cutoff should be mounted slightly lower
than the existing cutoff and it should be equipped with a manual reset
to prevent automatic restarting following failure of the primary
cutoff.
I have discussed installing manual reset protection with Mr. Allen
Chapman, Loss Prevention Manager at CCI. Because of the possibility of
a building or boiler freeze up due to failure to reset a cutoff, we
feel it is necessary to connect the protection to an alarm or flashing
light, outside the building, that can be seen by law enforcement
officers. They can call the building custodian to correct the problem.
Law enforcement personnel would, of course, have to be advised of this
arrangement.
Page 3
91-2 The existing high temperature/pressure limits on the COLO 31755, 31756,
the five boilers at the library, the three boilers at Weld County Human
Resources, and the COLO 1196 coil water heater at the Motor Pool
Service Center, should be replaced with limits having manual resets to
prevent automatic restarting following a high temperature or pressure
condition. Manual resets assure that someone will check to determine
the cause of the problem and correct it prior to putting the unit back
on line.
See recommendations 91-1 for manual reset alarm notification.
91-3 The COLO 19158, 2879, and 27910 boilers are not provided with high
pressure/temperature limit switches to shut down the burner when the
boilers exceed their maximum allowable pressure or temperature rating.
These boilers should be equipped with high pressure or temperature
limits having manual resets to prevent automatic restarting following
an unsafe pressure or temperature condition.
See Recommendation 91-1 for manual reset alarm notification.
91-4 The existing valves installed between the COLO 27910 boiler, at the
Fort Lupton Service Center, and its low water fuel cutoff should be
replaced with ball cocks so that the position of these valves can
easily be determined to reduce the possibility of one or both of them
being closed during normal operation. The ball cocks should provide a
full flow, through the ball, to eliminate any restrictions in the
cutoff piping.
91-5 Fuel train diaphragm regulators on the COLO 1196 Jarco coil water
heater, at the Motor Pool Service Center, should be vented outside the
building to a point at least 7` above ground. They are presently
vented to an electronic igniter where a ruptured diaphragm could result
in a build up of natural gas that could be explosively ignited when the
burner fires.
91-6 One of the diaphragm regulators in the COLO 19158 boiler fuel train, at
the Courthouse Annex, vents to the boiler room where natural gas, from
a ruptured diaphragm, could escape into the area and be ignited when
the burner fires. This regulator should be vented to the pilot light
as other regulators in this fuel train have already been routed.
Sincerely,
72 ��/�J�/
M.M. Joh n, CPCU
Sr. Los ontrol Engineer
(303)74 1682
52-4230.mev (h)
(3/11/91)
Page 4
Distribution:
Orii: As Addressed
1 cc: Mr. Steve Boeck, HVAC
Weld County
c/o Colorado Counties, Inc.
P 0 Box 758
Greeley, CO 80632
1 cc: Mr. Allen Chapman, Loss Prevention Manager
Colorado Counties, Inc.
1177 Grant Street
Denver, CO 80203
1 cc: Rollins Burdick & Hunter of Colorado
1 cc: B&M Unit Denver
1 cc: File, Denver
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