Presentation on theme: "Acceptance Testing. Acceptance Testing of Fire Protection Systems 101 Touch on all types of Fire Sprinkler of systems Fire Pumps and Standpipes Requirements."— Presentation transcript:
Acceptance Testing of Fire Protection Systems 101 Touch on all types of Fire Sprinkler of systems Fire Pumps and Standpipes Requirements for Acceptance Testing per NFPA and the State Fire Marshal Industry Jargon and Common terminology State Rules- Texas Insurance Code Chapter 6003 & 28 TAC SS Information in these slides comes from NFPA Standards 13, 14 and 20
Defining Terms “Authority Having Jurisdiction” Listed and Approved “Shall” vs. “Should” Hydrostatic Testing And Cover Add and Relocates (Remodels) vs. New System installs Main Drain Test
Control Valve Testing Tagging Requirements System Type- Wet, Dry, Preaction and Deluge with specific differences and required tests for each Specific Application System- ESFR, Control Mode, Residential, Double Interlock, etc
Authority Having Jurisdiction (AHJ) 3.2.2* “An organization, office or individual responsible for enforcing the requirements of a code or standard, or for approving equipment, materials, an installation, or a procedure”
Examples: Fire Chief, Fire Marshal Labor Department Health Department- TDADS Building Official, Electrical Inspector, Plumbing Inspector Insurance Organizations and their Representatives Commanding Officer on Base
…essentially… Anyone with a vested interest in the system performing as intended
Listed 3.2.2* “Equipment, materials, or services included in a list published by an organization that is acceptable to the authority having jurisdiction”….
Approved “Acceptable to the authority having jurisdiction” All materials and methods for installation are to conform to Chapter 6 of NFPA or the individual product listings and approvals. When in doubt…….. Approved Materials
…Make the installing contractor prove it to your satisfaction!!!! If it looks incorrect, it probably is Be wary of new products, have contractor provide cut sheets when in doubt Good review with thorough walk through at hydro at end of job
Your interpretation of the codes and standards is to be met or proven incorrect- codes/ standards are in writing- not inferred Sometimes corners are cut by unscrupulous contractors Some poor installs are mistakes or “human error” - BUT….
Report repeat offenders to the State Fire Marshal’s office!!!
REMEMBER… You are the last line of defense to ensure the end user gets what they expect and paid for!!! These are your customers, you are their expert! Poor installs fail annual inspections and cost the owner money later for repairs
Shall “Indicates a mandatory requirement.” Should “Indicates a recommendation or that which advised but not required.”
System Acceptance Acceptance Testing of systems is contained in Chapter 24 of NFPA Edition All required tests are listed, but required extra heads and some paperwork is not.
Hydrostatic Test Section “All piping and attached appurtenances subjected to system working pressure shall be hydrostatically tested at 200 psi (13.8 bar) and shall maintain that pressure without loss for two hours”
Section Portions of systems normally subjected to working pressures in excess of 150 psi (10.4 bar) shall be tested as described in at a pressure of 50 psi (3.5 bar) in excess of working pressure
Things to watch at Hydro Need to know expected pump churn pressure and expected system working pressure, are PRV’s required? Hydrostatic test pressure is taken at the bottom of the system, not the top (Section )
Know the limits of the materials- pressure limitations of fittings and sprinkler heads If there is freeze potential, an interim pneumatic air test at 40 psi can be conducted for 24 hours per This does not remove or replace the requirement for a hydrostatic test.
This test is referred to as a “Hydro Test” or “Cover Inspection” All systems require this type of test- Sprinkler, Standpipe, Pump In new construction the pipe should not be covered up during the test A procedure for removing “test blanks” must be in place
Retrofits are typically covered up. These are existing buildings and not all areas are accessible. Use your own judgment. Walk systems during the two hour test, look for leaks. Small leaks are not cause for concern. Excessive water leakage and pressure drop are cause for failure and re-test of system
Hydro Test Procedure Contractor should have system pumped up above 200 psi or 50 above working pressure, prior to your arrival to remove air pockets Note Pressure on gauge upon arrival. Walk system- look for leaks.
While walking system, note areas that are in need of repair or changes required in the system to installing contractor. At end of two hour period, note pressure (loss if any). Have Contractor drain system to zero the gauge out in your presence.
Things to Keep in Mind FDC piping is often overlooked- Needs to be 150psi after repair/ replacement- Sec Temperature changes affect system pressure during hydro. Trapped air in the system takes time to escape, if the system has not been pumped up for some time then air will escape.
Add and Relocates “Modifications affecting 20 or fewer sprinklers shall not require testing in excess of system working pressure”
Per Section Modifications above 20 sprinklers, isolate the affected portion of the system and hydro Per Section Modifications that cannot be isolated (i.e.. Relocated drops) shall not require tested in excess of system working pressure
Main Drain Test “The main drain valve shall be opened and remain open until system pressure stabilizes” “The static and residual pressures shall be recorded on the contractor’s material and test certificate” Use the bottom gauge
Often overlooked Required on State “white tags” Provides baseline water supply test information to measure water supply deterioration in subsequent NFPA 25 Inspections. This is required on all systems! The importance cannot be stressed enough!
Size of main drains Table Drain Size_________ Riser or Main Size Size of Drain Connection Up to 2 in. 3⁄4 in. or larger 21⁄2 in., 3 in., 31⁄2 in. 11⁄4 in. or larger 4 in. and larger 2 in. only No test orifices on main drains!!!! Need fully open for Main Drain Test. Listed Test and drain assemblies are acceptable if capable of full flow.
Operational Tests Referred to as a “Final” While performing this test, an inspection should be performed. Things to look for: –Loaded or painted sprinkler heads –Adequate coverage of all spaces –Missing pieces or incorrect install –Tamper and flow switch operation –Fire Alarm System should be on “Test”
Walk the space- Check head coverage Light Hazard –225 Sq Ft –Max. 15’ X 15’ Ordinary Hazard –130 Sq Ft –Max. 15 ft X 8’-8”
Extra Hazard –100 Sq Ft –Max. 10’ X 10’ or 12 X 8’-4” Storage, ESFR, Control Mode –Look up each individual section- these change often –Request the sprinkler cut sheet from the Contractor- these are specific application and may have some special requirements
Obstructions Depending on the type of head and the obstruction Refer to Chapter 8 in NFPA 13- ’07. All types of heads are broken down individually
Alarm Initiating Devices
Testing Alarm Switches Inspector’s test connection should have at least 1 inch pipe connected to a corrosion resistant orifice equal to the size of the smallest orifice on the system. Open ITC all the way, alarm should sound in less than 5 minutes
If bell goes off too quick, have contractor adjust delay on alarm device to account for water hammer in city water to avoid nuisance alarms. Ensure cover is on WF switch after test is performed Call the monitoring company- verify signals are correct for the space/ bldg
Valve Tamper Switches
Testing Tamper Switches “Valves on connections to water supplies, sectional control valves, and other valves in supply pipes to sprinklers and other fixed water based fire suppression systems shall be supervised by one of the following:”
(1)Central station, proprietary, or remote station signaling at a constantly attended point (2)Local signaling service that will cause the sounding of an audible signal at a constantly attended point (3)Valves locked in the correct position (4)Valves in fenced enclosures under the owner’s control
Testing Tampers “All control valves shall be fully closed and opened under system water pressure to ensure proper operation” Check the valve operation Check Tamper operation and signal to monitoring company
Pressure Reducing Valves
Common Misinterpretation PRV’s should be a Pressure Reducing Valve- NOT Restricting or Relief Valve True PRV’s Reduce pressure under both Flow and Static Conditions NFPA 14-’07 Sec NFPA 13-’07 Sec
Where Required Sprinkler-When working pressure exceeds 175 psi unless all downstream components are rated for the higher pressure Standpipe-For Fire Hose Valves where pressure exceeds 175 psi on 2-1/2” FHV’s pressure shall be limited to 100 psi- 1-1/2” valves can be of regulating type
PRV Requirements- Fire Sprinkler Pressure gauges shall be on the inlet and outlet sides of each pressure reducing valve A relief valve of not less than ½” shall be provided on the discharge side set to operate at a pressure not exceeding 175 psi.
A listed indicating valve shall be provided on the inlet side of each PRV, unless the PRV meets the listing requirements for use as an indicating valve Means shall be provided downstream of all PRV’s for flow tests at sprinkler demand
Acceptance Testing PRV’s Each pressure- reducing valve shall be tested upon completion of installation to insure proper operation under flow and no-flow conditions Testing shall verify device regulates outlet at maximum and normal conditions
The results of the flow test of each PRV shall be recorded on the contractor’s material and test certificate The results shall include the static and residual inlet pressures, static and residual outlet pressures and the flow rate
Ask for PRV Testing Logs to show work was completed NFPA requires 1-1/2” hose valves residual pressure limited to 100 psi and 2-1/2” hose valves static and residual pressure limited to 100 psi where pressure exceeds 175 psi Standpipe Hose Valve PRV’s- NFPA 14-’
Backflow Prevention Assemblies A Where backflow prevention devices are installed, they should be in an accessible location to provide service and maintenance
Means shall be provided downstream of all backflow prevention valves for flow tests at system demands A describes the describes the methods available- essentially ensuring the backflow will not restrict the system demand
Backflow Prevention Assemblies Section references AWWA M14, Recommended Practice for Backflow Prevention and Cross Connection Control and the public Health AHJ requirements Where are they Required???
Backflow Prevention Acceptance Testing The backflow prevention assembly shall be forward flow tested to ensure proper operation The minimum flow rate shall be the system demand, including hose stream …
A copy of the state or local test report performed by a TCEQ approved tester should be attached to the riser An approved inspection by the local Health AHJ should be provided prior to final.
Circulating Closed Loop Systems These are covered in Requires certification of pressure ratings for auxiliary devices and proof of pressure test in all modes of operation Discharge tests to be per the five minute requirement
Wet Pipe System For Heated Buildings Commercial Industrial Residential Hospitals Educational Retail Most Common Sprinkler System Easiest to Maintain and Operate Requires the Least Amount of Testing
Wet System Tests and Requirements Hydrostatic and Cover Walkthrough and Final –Operational (Alarms, Tamper, Main Drain Test) –Confirm Code compliance –Ensure correct number of spare heads are left on site per NFPA Section Dry heads not required. Sprinkler Wrench is.
New systems to have White Tag and Blue ITM Tag All additions over 20 heads are to have a new white tag added Hydraulic Placard and General Information Sign PRV test tags on each PRV Backflow certification and Inspection by Plumbing Dept Wet System Riser Reqt’s
Dry Pipe System For Non-Heated Buildings Commercial Industrial Parking Garages Building Exteriors
Dry Pipe System
Dry System Tests and Requirements Hydrostatic and Cover Walkthrough and Final –Operational (Alarms, Tamper, Main Drain Test) –Confirm Code compliance –Ensure correct number of spare heads are left on site per NFPA Section Dry heads not required. Sprinkler Wrench is.
In addition to 200 psi hydrostatic test- an air leakage test is required 40 psi of air for 24 hours- any leakage in excess of 1-1/2 psi shall be corrected Dry Systems Also Require
covers operational test Trip test of valve and any quick opening devices- time how long it takes for water to be discharged from the inspector’s test connection. Verify it is per and record it on the Contractor’s Material and Test Certificate System Operational Test
Water Delivery per NFPA Table Dry System Water Delivery Hazard Number of Most Remote Sprinklers Initially Open Maximum Time of Water Delivery Residential115 seconds Light160 seconds Ordinary I250 seconds Ordinary II250 seconds Extra I445 seconds Extra II445 seconds High piled440 seconds
The air supply shall have a capacity capable of restoring normal air pressure in the system within 30 minutes A When a single compressor serves multiple systems, the 30 minute fill time is based in the largest system Air Compressor Testing
New systems to have White Tag and Blue ITM Tag All additions over 20 heads are to have a new white tag added Hydraulic Placard and General Information Sign PRV test tags on each PRV Backflow certification and Inspection by Plumbing Dept Dry System Riser Reqt’s
Pre Action System For Environmentally Sensitive Areas Computer Rooms Surgical Suites Tele-Data Switch Rooms Fine Art Storage Rooms
Pre Action System
Preaction Requirements Hydrostatic and Cover Walkthrough and Final –Operational (Alarms, Tamper, Main Drain Test) –Confirm Code compliance –Ensure correct number of spare heads are left on site per NFPA Section Dry heads not required. Sprinkler Wrench is.
Test the preaction valve operation in accordance with the manufacturer’s instructions- ask for literature if there is any questions on operation Test manual and remote control activation- this can be electric, pneumatic or a combination Preaction Systems Also Require
Is the piping supervised? Sec requires supervision to ensure system integrity. If supervisory air or nitrogen is used- it needs to conform to for dry systems… –30 minute refill requirement. Also needs to maintain a minimum supervisory pressure of 7 psi.
New systems to have White Tag and Blue ITM Tag All additions over 20 heads are to have a new white tag added Hydraulic Placard and General Information Sign PRV test tags on each PRV Backflow certification and Inspection by Plumbing Dept Preaction Riser Reqt’s
Deluge System For Highly Flammable Areas Aircraft Hangers Solvent Processing Dynamite Plants
Deluge System Requirements Hydrostatic and Cover Walkthrough and Final –Operational (Alarms, Tamper, Main Drain Test) –Confirm Code compliance –Ensure correct number of spare heads are left on site per NFPA Section Dry heads not required. Sprinkler Wrench is.
Test the deluge valve operation in accordance with the manufacturer’s instructions- ask for literature if there is any questions on operation Test manual and remote control activation- this can be electric, pneumatic or hydraulic Deluge Systems Also Require
Flow Testing of the system to ensure hydraulic performance. Calibrated gauges are to be used at different points on the system These gauge readings are to be compared to the hydraulic calculations Detection devices are to be automatically supervised
New systems to have White Tag and Blue ITM Tag All additions over 20 heads are to have a new white tag added Hydraulic Placard and General Information Sign PRV test tags on each prv Backflow certification and Inspection by Plumbing Dept Deluge Riser Reqt’s
Standpipe System For Multi-level Buildings Per AHJ
Stand Pipe System
Standpipe System Tests and Requirements Hydrostatic and Cover Walkthrough and Final –Operational (Alarms, Tamper, Main Drain Test) –Confirm Code compliance and hose thread compatibility –Flow test through roof manifold testing approved water source- fire pump, FD pumper truck, etc.
PRV tests. Ask for test log Main Drain flow tests- record on material test certificate Dry and semi automatic shall be trip tested to deliver 250 GPM at the hydraulically most remote hose connection within 3 minutes Air testing applies per dry systems in NFPA 13
Open and close each valve manually- make sure hose caps are on prior to testing Check for proper signage
Fire Pump Tests and Requirements Per NFPA Edition Chapter 14 Piping to be hydrostatically tested per NFPA 13 req’s All piping sizes to be verified per table 5.25 (a) by rated pump flow
All factory supplier representatives are to be in attendance during field acceptance tests- AHJ should be notified As a minimum, proof of the initial startup and field acceptance test report should be provided at Fire Marshal final
A copy of the certified pump test characteristic curve shall be available for comparison of the field acceptance test. Compare the curves to ensure the pump meets it’s factory specs.
Pump shall be run at minimum, rated and peak loads How is this determined?? Minimum is 0 GPM or churn Rated is the rating of the pump –i.e GPM pump needs to be tested at 1000 GPM Maximum is 150 % of pump rating- a 1000 GPM rated pump is capable of 1500 GPM flow
Per NFPA , Section Pumps shall furnish not less than 150 percent of rated capacity at not less than 65 percent of total rated head The shutoff head shall not exceed 140 percent of rated head for any type of pump.
Example 1- Pump is rated for psi 150 percent of load- 1.5 X 750 = percent of total rated head-.65 X 100= 65 psi Pump should provide 65 psi MINIMUM at 1125 GPM
Example 2- Maximum Shutoff 100 psi Fire pump Maximum Shutoff Head- 1.4 X 100 psi= 140 psi Pump shutoff pressure should not be over 140 psi.
Keep in mind that is the Fire Pump shutoff pressure- the jockey of maintenance pump will add 10 more psi to the working pressure of the system
Test fire alarm signals in Fire Pump control panel –Pump Run –A/C Power Fail –Phase Reversal –Normal power and alternate power
State Requirements What does 28 TAC §§ – The Fire Sprinkler Rules require for new systems and system modifications?
White Original Installation Tag
To be affixed to riser after new install or scheduled testing and maintenance. To remain on riser for the life of the system- provides baseline water flow information for subsequent inspections. Work for this tag to be filled out by licensed RME-G or RME-I.
Blue Inspection Testing and Maintenance Tag
To be affixed to riser after new install or scheduled testing and maintenance. To remain on riser for minimum of five years- only to be removed by employee of authorized firm Work for this tag to be filled out by licensed RME-G or RME-I.
Blue Service Tag
To be affixed to riser after every service performed To remain on riser for minimum of five years- only to be removed by employee of authorized firm Work for this tag to be filled out by Installer- license not needed If anything is found to be impaired, a yellow or red tag need to be affixed as well.
Contractor’s Material and Test Certificates Ensure these are filled out in their entirety and affixed to the riser in a protective sheath. The owner will want these at a later date.
Hydraulic Placard Used in future work on system Often lost over the years Should be metal and permanently marked per NFPA
Post Construction Inspections and Maintenance Required per NFPA 25 and all Local Jurisdictions Texas requires Licensed Inspectors Identify changes in Occupancy and use Ceiling and finishes (i.e.. Painted and loaded heads) Added building features (Decks, Canopies, Clouds) Ensure system operation Find system deficiencies and repair them in a timely manner