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ES&H
Manual Fire Protection Supplement |
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Chapter 4: Fire Protection System Inspection, Testing,
and Maintenance Procedure |
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Appendix 10: Procedure
for Flow Test of Public Main |
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1.0
Purpose
Jefferson Lab performs flow tests of the public main on site to ensure its continuous operation. Planned testing ensures irregularities are detected and the risk of deficiencies within the system is mitigated through maintenance.
This testing procedure is conducted in accordance with accepted standards, codes, and manufacturers' recommendations.
2.0
Scope
This document describes the flow test procedure used on street hydrants to test the water supply at Jefferson Lab. It includes test preparation and system restoration.
Testing, flushing, or special connections to the water supply system use back-flow prevention precautions as discussed in ES&H Manual Chapter 6730 Water Quality Management.
3.0
Planning
3.1 Staff Required: 1
3.2 Time Required: 2 Hours
3.3 Equipment Required
· Gage cap
· Fire-Hydrant Wrench
· Pitot Gauage
4.0
Test Preparation
4.1
Establish the fire-detection system
impairment using the Fire Protection
Supplemental Chapter 5: Fire Protection System Impairment Procedure for detailed instructions on work planning,
advanced notification, and administrative controls.
·
Post the
‘Fire Alarm Systems Testing in Progress’
notification signs.
5.0
Conduct the Test
5.1
Attach
a gage cap to the No. 1 hydrant, which is located along Hogan Drive (on the
north side of Jefferson Lab).
5.2
Open
the No. 1 hydrant and record its static pressure (in both psi and kPa).
5.3
Move
to the No. 2 hydrant, which is also located along Hogan Drive (west of the No.
1 hydrant).
5.4
Remove
the caps from the No. 2 hydrant.
5.5
Measure
the diameter of the outlets on the No. 2 hydrant, which are square and sharp.
5.6
Replace
one cap on the No. 2 hydrant.
5.7
Open
the No. 2 hydrant and record its Pitot reading (in both psi and kPa).
5.8
Return
to the No. 1 hydrant and record the residual pressure (in both psi and kPa).
5.9
Shut
off the water flow at the water-supply connection near the No. 1 hydrant.
5.10
Shut
down the No. 2 hydrant slowly and carefully.
5.11
Replace
all caps to the No. 2 hydrant.
5.12
Return
to the No. 1 hydrant and record the static pressure (in both psi and kPa). The pressure should be equal to what was measured
at the start of the test.
5.13
Shut
down the No. 1 hydrant.
5.14
Remove
the gage cap and replace it with the regular cap.
5.15
Remove
posted notification signs and notify the FPE that the flow test is complete.
6.0
Documentation
Data recorded during this annual test is filed with
the FPE.
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ISSUING
AUTHORITY |
APPENDIX
AUTHOR |
APPROVAL
DATE |
EXPIRATION
DATE |
REV. |
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Fire Protection Dept |
06/15/11 |
06/15/16 |
0 |
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