Guide for the Preservation of Highway Tunnel Systems (2015)

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73 a p p e n d i x b Catalog of Preservation Actions

74 G uide for the preservation of Highw ay Tunnel System s Preservation Action Item Procedure Description Type Preservation Service Interval Other D a i l y W e e k l y M o n t h l y Q u a r t e r l y S e m i - A n n u a l l y A n n u a l l y B i e n n i a l l y M a n u f a c t u r e r ' s R e c o m m e n d a t i o n C y c l i c a l ( N o n - C o n d i t i o n - B a s e d ) P r e v e n t i v e M a i n t e n a n c e C o n d i t i o n - B a s e d P r e v e n t i v e M a i n t e n a n c e R e g u l a t o r y R e h a b i l i t a t i o n LIFE SAFETY SYSTEMS Fire Protection Inspect manual fire alarm boxes X X X Closed-circuit TV (CCTV) – confirm operation X X Automatic fire detectors X X X Upgrade fire detection/alarm system head-end X Upgrade CCTV head-end X Fire Extinguishers Inspect each fire extinguisher in the tunnel and support spaces X X X Perform maintenance on each fire extinguisher in the tunnel and support spaces X X X If in a cabinet, confirm operation of cabinet door – door must latch securely and open freely X X Lubricate/repair/adjust door handle and hinges as necessary X X Fire Standpipes Fire department connections capped and clear X X Confirm threads are undamaged and caps in place X X

Catalog of preservation actions 75 Preservation Action Item Procedure Description Type Preservation Service Interval Other D a i l y W e e k l y M o n t h l y Q u a r t e r l y S e m i - A n n u a l l y A n n u a l l y B i e n n i a l l y M a n u f a c t u r e r ' s R e c o m m e n d a t i o n C y c l i c a l ( N o n - C o n d i t i o n - B a s e d ) P r e v e n t i v e M a i n t e n a n c e C o n d i t i o n - B a s e d P r e v e n t i v e M a i n t e n a n c e R e g u l a t o r y R e h a b i l i t a t i o n Test flow hydrants X X Test flow standpipe per NFPA 25 X X X Confirm top nut and caps are tight but not over-torqued X X Fire Hydrants Grease top nut X X Confirm cap is in place X X Test flow hydrant X X X Confirm top nut and caps are tight but not over-torqued X X Fire Lines Freeze-Protection Pumps Clean and visually inspect X X Lubricate and grease pumps X X Operate pumps, confirm operation (prior to heating season) X X Heat tracing – verify system operation (prior to system operation) X X Pipe insulation with heat tracing – verify condition (prior to system operation) X X Test and confirm operation of low-temperature alarms (prior to heating season) X X X

76 G uide for the preservation of Highw ay Tunnel System s Preservation Action Item Procedure Description Type Preservation Service Interval Other D a i l y W e e k l y M o n t h l y Q u a r t e r l y S e m i - A n n u a l l y A n n u a l l y B i e n n i a l l y M a n u f a c t u r e r ' s R e c o m m e n d a t i o n C y c l i c a l ( N o n - C o n d i t i o n - B a s e d ) P r e v e n t i v e M a i n t e n a n c e C o n d i t i o n - B a s e d P r e v e n t i v e M a i n t e n a n c e R e g u l a t o r y R e h a b i l i t a t i o n Fire Pumps Visually inspect fire pump X X Operate pump – (no-flow condition); note unusual noises or vibrations X X X Operate pump – flow condition/flow test X X X Lubricate pump, motor, and coupling X X Operate pump and measure current X X Check shaft alignment and shaft endplay X X Check and correct pressure gauges as required X X Measure motor and pump vibration X X Fire Pump Controller Exercise disconnect switch and circuit breaker X X Operate pumps from both alternate and primary power supplies X X Conduct annual test of system including flow and no-flow conditions in accordance with NFPA 72 X X X Fire Tank Fill Pump Visually inspect pump X X Operate pump – note unusual noises or vibrations X X

Catalog of preservation actions 77 Preservation Action Item Procedure Description Type Preservation Service Interval Other D a i l y W e e k l y M o n t h l y Q u a r t e r l y S e m i - A n n u a l l y A n n u a l l y B i e n n i a l l y M a n u f a c t u r e r ' s R e c o m m e n d a t i o n C y c l i c a l ( N o n - C o n d i t i o n - B a s e d ) P r e v e n t i v e M a i n t e n a n c e C o n d i t i o n - B a s e d P r e v e n t i v e M a i n t e n a n c e R e g u l a t o r y R e h a b i l i t a t i o n Lubricate pump, motor, and coupling X X Check shaft alignment and shaft endplay X X Inspect and test automatic tank fill valve X X X Secondary containment provided for all hazardous materials X X X MSDSs (material safety data sheets) for all materials posted (on file) X X X Inspect all floors for oil leakage; add absorbent and clean as required to maintain safe footing X X Fire Alarm System Perform all tests and inspections in accordance with NFPA 72 X X X Make and file a permanent record of all inspections and tests conducted X X X Open primary power supply to fire alarm panel and note sounding of trouble alarm and light X X Perform fire drill by use of drill switch on fire alarm panels, and check that all visual and audible signals emit a sound and tunnel SCADA system (if any) receives alarm X X Visually inspect all supervisory and water flow alarms on any standpipe systems X X Test all heat detectors with a calibrated heat source and replace all failed units X X Test all smoke detectors by measuring and recording sensitivity; replace all failed units X X Replace all failed smoke detector units X

78 G uide for the preservation of Highw ay Tunnel System s Preservation Action Item Procedure Description Type Preservation Service Interval Other D a i l y W e e k l y M o n t h l y Q u a r t e r l y S e m i - A n n u a l l y A n n u a l l y B i e n n i a l l y M a n u f a c t u r e r ' s R e c o m m e n d a t i o n C y c l i c a l ( N o n - C o n d i t i o n - B a s e d ) P r e v e n t i v e M a i n t e n a n c e C o n d i t i o n - B a s e d P r e v e n t i v e M a i n t e n a n c e R e g u l a t o r y R e h a b i l i t a t i o n Clean all smoke and heat detector housings and check battery voltage under load X X Verify that proper alarm devices operate for the appropriate initiating device circuit X X Verify that all remote annunciators operate X X Check all lamps, alarm devices, and printers for proper operation X X Make a discharge test of batteries to determine capacity for operating system for 24 hours X X Upgrade fire detection/alarm system head-end X X Communications Visual inspection of radio X X Visual inspection of telephone X X Test operation of radio X X Test operation of telephone X X Egress Emergency egress X X Exit lighting/signage/identification X X Tenable environment (Note: smoke control ventilation is located in fire suppression section.) X X X

Catalog of preservation actions 79 Preservation Action Item Procedure Description Type Preservation Service Interval Other D a i l y W e e k l y M o n t h l y Q u a r t e r l y S e m i - A n n u a l l y A n n u a l l y B i e n n i a l l y M a n u f a c t u r e r ' s R e c o m m e n d a t i o n C y c l i c a l ( N o n - C o n d i t i o n - B a s e d ) P r e v e n t i v e M a i n t e n a n c e C o n d i t i o n - B a s e d P r e v e n t i v e M a i n t e n a n c e R e g u l a t o r y R e h a b i l i t a t i o n Emergency exits X X X Cross-passageways X X X Electrical Emergency lighting X X X Power X X Redundant power X X Security plan X X X Emergency Response Plan (ERP) ERP on file and all personnel aware of requirements X X X ERP reviewed and updated periodically X X X Tunnel personnel training of execution of ERP X X X Training exercises with participating agencies X X X Hydrocarbon Detector Confirm hydrocarbon detector will initiate both local and remote alarms X X

80 G uide for the preservation of Highw ay Tunnel System s Preservation Action Item Procedure Description Type Preservation Service Interval Other D a i l y W e e k l y M o n t h l y Q u a r t e r l y S e m i - A n n u a l l y A n n u a l l y B i e n n i a l l y M a n u f a c t u r e r ' s R e c o m m e n d a t i o n C y c l i c a l ( N o n - C o n d i t i o n - B a s e d ) P r e v e n t i v e M a i n t e n a n c e C o n d i t i o n - B a s e d P r e v e n t i v e M a i n t e n a n c e R e g u l a t o r y R e h a b i l i t a t i o n CO Monitoring Equipment Tunnel (local) sensors (confirm calibration and/or sensor replacement) X X Vacuum tubing (leak test) X X Vacuum pump (lubrication) X X Central sensor X X System calibration (as required by individual system) X X X Comparison gas refill (as required) X X X Life Safety and Fire Code Issues (Flammable/Hazardous Materials) Verify that all safety guards and covers (belt, chain, electrical panel) are in place and secure X X X Verify that no plastic (PVC, CPVC) pipe is located in supply-air passage X X X Verify that all batteries are properly stored and vented; confirm that battery charging only taking place in well-ventilated spaces X X X Verify that flammable material is stored in proper containers and properly ventilated spaces X X X Verify that secondary containment is provided for all hazardous materials X X X Verify MSDS sheets for all materials posted (on file) X X X Inspect all floors for oil leakage; add absorbent and clean as required to maintain safe footing X X

Catalog of preservation actions 81 Preservation Action Item Procedure Description Type Preservation Service Interval Other D a i l y W e e k l y M o n t h l y Q u a r t e r l y S e m i - A n n u a l l y A n n u a l l y B i e n n i a l l y M a n u f a c t u r e r ' s R e c o m m e n d a t i o n C y c l i c a l ( N o n - C o n d i t i o n - B a s e d ) P r e v e n t i v e M a i n t e n a n c e C o n d i t i o n - B a s e d P r e v e n t i v e M a i n t e n a n c e R e g u l a t o r y R e h a b i l i t a t i o n ELECTRICAL Closed-Circuit TV Camera Clean, align, and focus all cameras after tunnel washing X X Check cable connections to camera (i.e., power, control, video signal) X X Emergency Lighting Operate test buttons on emergency light fixtures X X Operate battery pack for emergency lighting for 90 minutes X X Electrical Switchboard and Switchgear Inspect switchgear bus and connections by infrared scanning X X Perform ultrasonic inspection of medium-voltage switchgear bus supports, insulators, and barriers X X Visually inspect all equipment for unusual conditions X X Inspect and check tightness of all connections X X Remove and replace defective lighting contacts X X Review results of last visual, infrared, and ultrasonic inspection X X After power shutdown, clean entire switchgear interior X X Clean all bus insulators and check for cracks and chips X X

82 G uide for the preservation of Highw ay Tunnel System s Preservation Action Item Procedure Description Type Preservation Service Interval Other D a i l y W e e k l y M o n t h l y Q u a r t e r l y S e m i - A n n u a l l y A n n u a l l y B i e n n i a l l y M a n u f a c t u r e r ' s R e c o m m e n d a t i o n C y c l i c a l ( N o n - C o n d i t i o n - B a s e d ) P r e v e n t i v e M a i n t e n a n c e C o n d i t i o n - B a s e d P r e v e n t i v e M a i n t e n a n c e R e g u l a t o r y R e h a b i l i t a t i o n Clean, lubricate (if applicable), and verify operation of all control switches, auxiliary relays, and devices X X Clean, lubricate, adjust, and add anti-oxidant grease to contacts of all disconnect switches X X Clean and perform insulation resistance testing on all lightning arrestors X X Perform insulation resistance testing on any bus bars X X Perform calibration test and verify proper operation of all meters X X Replace electromechanical-type protective relays with microprocessor-based relays X Replace breakers with new and/or re-manufactured units X Low-Voltage Air Circuit Breakers Remove covers and thoroughly clean each breaker and contact surfaces X X Apply anti-oxidant grease to breaker’s main contacts X X Lubricate and verify operation of all mechanisms X X Apply current equal to 90% to 110% of the breaker trip coil setting to verify proper pick-up of tripping mechanism X X Record trip times for long-time, short-time instantaneous, and ground fault breakers when passing loads equal to multiples of their listed ratings through each phase of the breaker X X Measure contact resistance and adjust where possible X X

Catalog of preservation actions 83 Preservation Action Item Procedure Description Type Preservation Service Interval Other D a i l y W e e k l y M o n t h l y Q u a r t e r l y S e m i - A n n u a l l y A n n u a l l y B i e n n i a l l y M a n u f a c t u r e r ' s R e c o m m e n d a t i o n C y c l i c a l ( N o n - C o n d i t i o n - B a s e d ) P r e v e n t i v e M a i n t e n a n c e C o n d i t i o n - B a s e d P r e v e n t i v e M a i n t e n a n c e R e g u l a t o r y R e h a b i l i t a t i o n Perform and record results of insulation resistance test from each pole to other two poles and to ground X X Clean and lubricate breaker carriage and racking mechanism on any draw-out breakers X X Upgrade breaker trip units X Molded-Case Circuit Breakers Inspect breaker for proper installation X X Remove cover (if possible) and fully clean interior and exterior X X Inspect for burning, overheating, wear, and proper alignment X X Perform contact resistance and insulation resistance measurements and test X X Apply current equal to 300% of breaker rating to test the long-time element X X Test and compare any breakers with instantaneous trip units to manufacturer’s characteristic curve X X Automatic Transfer Switch (600-Volt Class) After total outage is obtained, clean all contact surfaces, apply anti-oxidant contact grease, measure and record contact resistance, and make adjustments if necessary X X Lubricate bearings, links, pins, and cams X X

84 G uide for the preservation of Highw ay Tunnel System s Preservation Action Item Procedure Description Type Preservation Service Interval Other D a i l y W e e k l y M o n t h l y Q u a r t e r l y S e m i - A n n u a l l y A n n u a l l y B i e n n i a l l y M a n u f a c t u r e r ' s R e c o m m e n d a t i o n C y c l i c a l ( N o n - C o n d i t i o n - B a s e d ) P r e v e n t i v e M a i n t e n a n c e C o n d i t i o n - B a s e d P r e v e n t i v e M a i n t e n a n c e R e g u l a t o r y R e h a b i l i t a t i o n Perform insulation resistance test X X Test all settings of voltage, frequency sensing, and timing relays X X Low-Voltage Insulated Cable (Less Than 600 Volts) Check all cable terminations for tightness X X Perform and record results of insulation resistance test from each phase to the other two and to ground for 1 minute using a test voltage of 1,000 volts direct current (DC); compare results with previous tests X X Electrical Transformer (All Types) Inspect transformer connections by infrared scanning X X Perform ultrasonic inspection of medium-voltage bus supports, insulators, and barriers X X Visually inspect all equipment for unusual conditions X X Test transformer and circuit breaker insulating oil X X Dry-Type Transformer Remove cover and visually inspect all cable/bus connections for evidence of overheating or burning; check for tightness and clean windings X X

Catalog of preservation actions 85 Preservation Action Item Procedure Description Type Preservation Service Interval Other D a i l y W e e k l y M o n t h l y Q u a r t e r l y S e m i - A n n u a l l y A n n u a l l y B i e n n i a l l y M a n u f a c t u r e r ' s R e c o m m e n d a t i o n C y c l i c a l ( N o n - C o n d i t i o n - B a s e d ) P r e v e n t i v e M a i n t e n a n c e C o n d i t i o n - B a s e d P r e v e n t i v e M a i n t e n a n c e R e g u l a t o r y R e h a b i l i t a t i o n Liquid-Filled Transformer Inspect transformers for leaks, deteriorated seals/gaskets, proper oil level, and test oil sample X X Inspect transformer tank and cooling fins for corrosion, chipped paint, dents, and proper connection to ground X X Inspect all bushings for cracks/chips, proper tightness, and evidence of overheating X X Inspect all gauges and alarm devices X X Clean core, coils, and enclosures and inspect any filters X X Perform primary and secondary insulation resistance test where possible X X Perform polarization index test on transformers 500 KVA and larger X X Perform turns ratio tests X X Perform calibration test and verify proper operation of all meters X X Generator Operate unit under load for 4 hours and check lubrication levels X X Change oil, coolant, and filter X X Compare nameplate information and connection with drawings and specifications X X

86 G uide for the preservation of Highw ay Tunnel System s Preservation Action Item Procedure Description Type Preservation Service Interval Other D a i l y W e e k l y M o n t h l y Q u a r t e r l y S e m i - A n n u a l l y A n n u a l l y B i e n n i a l l y M a n u f a c t u r e r ' s R e c o m m e n d a t i o n C y c l i c a l ( N o n - C o n d i t i o n - B a s e d ) P r e v e n t i v e M a i n t e n a n c e C o n d i t i o n - B a s e d P r e v e n t i v e M a i n t e n a n c e R e g u l a t o r y R e h a b i l i t a t i o n Inspect for proper anchorage and grounding X X Perform insulation resistance test on generator winding with respect to ground and determine polarization index X X Perform phase rotation test to determine compatibility with load requirements X X Functionally test engine shutdown and alarm controls for low oil pressure, over temperature, over speed, and other features X X Perform vibration baseline test and plot amplitude versus frequency for each main bearing cap X X Perform load bank test and record voltage, frequency, load current, oil pressure, and coolant temperature at periodic intervals during test X X Monitor and verify correct operation and timing of normal voltage-sensing relays, engine start sequence, time delay upon transfer, alternate voltage- sensing relays, automatic transfer operation, interlocks, limit switch functions, time delay and retransfer upon normal power restoration, and engine cool down and shutdown feature X X High Voltage Disconnect Inspect disconnect switch bus and connections by infrared scanning X X Perform ultrasonic inspection of medium-voltage bus supports, insulators, and barriers X X Visually inspect all equipment for unusual conditions X X

Catalog of preservation actions 87 Preservation Action Item Procedure Description Type Preservation Service Interval Other D a i l y W e e k l y M o n t h l y Q u a r t e r l y S e m i - A n n u a l l y A n n u a l l y B i e n n i a l l y M a n u f a c t u r e r ' s R e c o m m e n d a t i o n C y c l i c a l ( N o n - C o n d i t i o n - B a s e d ) P r e v e n t i v e M a i n t e n a n c e C o n d i t i o n - B a s e d P r e v e n t i v e M a i n t e n a n c e R e g u l a t o r y R e h a b i l i t a t i o n Busing Inspection Review results of last visual, infrared, and ultrasonic inspection X X Check for proper tightness of all exposed bus connections X X Thoroughly clean and check for cracks/chips of all bus insulators X X Clean, lubricate (if applicable), and verify operation of all control switches, auxiliary relays, and devices X X Clean, lubricate, adjust, and add anti-oxidant grease to contacts of all disconnect switches X X Clean and perform insulation resistance test on all lightning arrestors X X Perform insulation resistance test on any bus bars X X Service Enclosed Air Break Switches After shutdown, clean and inspect entire switch mechanism X X Check switch contacts for proper alignment and apply anti-oxidant grease to main contacts X X Check switch’s arcing contacts for proper opening sequence relative to main contacts X X Inspect fuses and record size and type used X X Clean all phase isolation barriers and check for contamination and corona damage X X

88 G uide for the preservation of Highw ay Tunnel System s Preservation Action Item Procedure Description Type Preservation Service Interval Other D a i l y W e e k l y M o n t h l y Q u a r t e r l y S e m i - A n n u a l l y A n n u a l l y B i e n n i a l l y M a n u f a c t u r e r ' s R e c o m m e n d a t i o n C y c l i c a l ( N o n - C o n d i t i o n - B a s e d ) P r e v e n t i v e M a i n t e n a n c e C o n d i t i o n - B a s e d P r e v e n t i v e M a i n t e n a n c e R e g u l a t o r y R e h a b i l i t a t i o n Thoroughly clean and check for cracks/chips of all insulators X X Clean and perform insulation resistance test on all lightning arrestors X X Inspect all ground connections X X Perform contact resistance and insulation resistance tests and record results X X Motor Control Center Inspect controller bus and connections by infrared scanning X X Perform ultrasonic inspection of medium-voltage bus supports, insulators, and barriers X X Visually inspect all equipment for unusual conditions X X Review results of last visual, infrared, and ultrasonic inspections X X After power shutdown, clean entire controller interior X X Check for proper tightness of all exposed bus connections X X Clean all bus insulators and check for cracks and chips X X Clean, lubricate (if applicable), and verify operation of all control switches, auxiliary relays, and devices X X Clean, lubricate, adjust, and add anti-oxidant grease to contacts of all disconnect switches X X Perform an insulating resistance and polarization test of the bus and the motor feeder with the motor connected X X Test overloads at 125% and 600% of rating against the tripping curve X X

Catalog of preservation actions 89 Preservation Action Item Procedure Description Type Preservation Service Interval Other D a i l y W e e k l y M o n t h l y Q u a r t e r l y S e m i - A n n u a l l y A n n u a l l y B i e n n i a l l y M a n u f a c t u r e r ' s R e c o m m e n d a t i o n C y c l i c a l ( N o n - C o n d i t i o n - B a s e d ) P r e v e n t i v e M a i n t e n a n c e C o n d i t i o n - B a s e d P r e v e n t i v e M a i n t e n a n c e R e g u l a t o r y R e h a b i l i t a t i o n Test all alarms and lights for proper feedback from devices X X Perform calibration test and verify proper operation of all meters X X Replace ventilation fan starters with variable frequency drives (VFDs) (Note: motor replacement or rewind may be required also.) X Lighting Relays and Contactors Clean all contacts and replace all worn and pitted contacts X X Check tightness of contactors X X Measure load current and verify proper operation X X Traffic/Lane Signals Inspect and verify operation of lane control devices X X Inspect and verify operation of variable message signs X X Clean, replace filter, tighten connections, replace lamps, etc. X X Tunnel Control System Check all controls on consoles for proper operation of tunnel lighting and fans X X Test all alarms and lights for proper feedback from devices X X Check all connections for tightness X X

90 G uide for the preservation of Highw ay Tunnel System s Preservation Action Item Procedure Description Type Preservation Service Interval Other D a i l y W e e k l y M o n t h l y Q u a r t e r l y S e m i - A n n u a l l y A n n u a l l y B i e n n i a l l y M a n u f a c t u r e r ' s R e c o m m e n d a t i o n C y c l i c a l ( N o n - C o n d i t i o n - B a s e d ) P r e v e n t i v e M a i n t e n a n c e C o n d i t i o n - B a s e d P r e v e n t i v e M a i n t e n a n c e R e g u l a t o r y R e h a b i l i t a t i o n Clean cabinets X X Replace computer [human–machine interface (HMI)] hardware X X Upgrade control system software X X Back up control system programs X X Tunnel Vehicle Over-Height System Check for proper operation of over-height detectors X X Tunnel Lights Verify proper operation of the lighting fixtures in the tunnel areas X X Count and record number of lights out on night lighting and day lighting X X Replace any inoperable bulbs or ballasts with ones of similar or increased efficiency X X Clean exterior of lenses on all lighting fixtures in the tunnel X X If required, clean interior of lenses X X Inspect gasketing on fixtures X X Verify operation of portal light meters X X Verify operation of time clocks X X Perform group relamping for specific lamp types X X

Catalog of preservation actions 91 Preservation Action Item Procedure Description Type Preservation Service Interval Other D a i l y W e e k l y M o n t h l y Q u a r t e r l y S e m i - A n n u a l l y A n n u a l l y B i e n n i a l l y M a n u f a c t u r e r ' s R e c o m m e n d a t i o n C y c l i c a l ( N o n - C o n d i t i o n - B a s e d ) P r e v e n t i v e M a i n t e n a n c e C o n d i t i o n - B a s e d P r e v e n t i v e M a i n t e n a n c e R e g u l a t o r y R e h a b i l i t a t i o n Upgrade lamps to newer sources as appropriate X Replace magnetic ballasts with high-efficiency electronic X Underground Tank and Piping Monitor Perform built-in test (if any) and verify that each circuit is operational; if not, identify circuit using troubleshooting guide and replace parts as necessary X X MECHANICAL Air Compressor Clean or replace air filters if necessary X X Clean external cooling fans X X Manually operate safety valves and drain tank X X Sample/analyze oil for contamination and change if necessary X X Check belt tension, clean motor, and operate safety valves on receiver X X Inspect system for air leaks X X Tighten or check all bolts and lubricate motor bearings X X Inspect and clean compressor valves X X Verify operation of low-level oil switch X X Inspect and confirm operation of all pressure-relief valves and safety controls as required X X X

92 G uide for the preservation of Highw ay Tunnel System s Preservation Action Item Procedure Description Type Preservation Service Interval Other D a i l y W e e k l y M o n t h l y Q u a r t e r l y S e m i - A n n u a l l y A n n u a l l y B i e n n i a l l y M a n u f a c t u r e r ' s R e c o m m e n d a t i o n C y c l i c a l ( N o n - C o n d i t i o n - B a s e d ) P r e v e n t i v e M a i n t e n a n c e C o n d i t i o n - B a s e d P r e v e n t i v e M a i n t e n a n c e R e g u l a t o r y R e h a b i l i t a t i o n Air-Conditioning Unit Clean or replace air filters X X Check coils and clean if necessary X X Inspect controls and verify proper operation of unit X X Check and adjust as needed – fan-belt adjustment, tension X X Confirm operation of condenser and evaporator fans X X Confirm (refrigerant) pressures and temperatures X X Boilers (Furnaces) Check chimney and flue for obstructions and ensure all joints are well supported and properly sealed X X Lubricate pumps and motors as required X X Clean entire boiler, inside and out X X Replace fuel filter and oil atomizing nozzle X X Confirm water level(s) X X Restart boiler and test burner performance, flue gas CO2, smoke, and temperature X X Verify operation of all limit switches and primary controls X X

Catalog of preservation actions 93 Preservation Action Item Procedure Description Type Preservation Service Interval Other D a i l y W e e k l y M o n t h l y Q u a r t e r l y S e m i - A n n u a l l y A n n u a l l y B i e n n i a l l y M a n u f a c t u r e r ' s R e c o m m e n d a t i o n C y c l i c a l ( N o n - C o n d i t i o n - B a s e d ) P r e v e n t i v e M a i n t e n a n c e C o n d i t i o n - B a s e d P r e v e n t i v e M a i n t e n a n c e R e g u l a t o r y R e h a b i l i t a t i o n Test relief valve or safety valve (use extreme caution) X X Check all steam traps for operation, leak-through X X High-efficiency (condensing) boilers only – service condensate neutralization trap; add limestone as required X X Inspect and confirm operation of all pressure-relief valves and safety controls as required X X X Chiller Check for leaks (refrigerant and water) X X Check purge operation X X Check lubricant level(s) X X Check lubricant filter/pressure drop X X Confirm refrigerant level X X Confirm system pressure and temperatures X X Confirm that water flow matches design X X Confirm expansion valve operation X X Clean condenser and lubricant cooler X X Clean evaporator on open systems X X Calibrate pressure, temperature, and flow controls X X

94 G uide for the preservation of Highw ay Tunnel System s Preservation Action Item Procedure Description Type Preservation Service Interval Other D a i l y W e e k l y M o n t h l y Q u a r t e r l y S e m i - A n n u a l l y A n n u a l l y B i e n n i a l l y M a n u f a c t u r e r ' s R e c o m m e n d a t i o n C y c l i c a l ( N o n - C o n d i t i o n - B a s e d ) P r e v e n t i v e M a i n t e n a n c e C o n d i t i o n - B a s e d P r e v e n t i v e M a i n t e n a n c e R e g u l a t o r y R e h a b i l i t a t i o n Check all wires and power connections for tightness X X Inspect starter contacts and action X X Check all safety interlocks X X Dielectric check of motor X X Change lubricant dryer and filter X X Perform analysis of oil and refrigerant X X Inspect seals on open units for signs of leakage X X Partial or complete valve and/or bearing inspection, per manufacturer’s recommendations X X Check vibration levels X X Check compressor guide vanes and linkage for operation, adjustment, and wear X X Perform eddy current inspection of heat exchanger tubes X X Compressor teardown and inspection of rotating parts X X Control System Confirm all status points (on/off, open/closed) X X Confirm control of individual equipment X X Check all alarms and safety interlocks X X Confirm feedback of operational points X X

Catalog of preservation actions 95 Preservation Action Item Procedure Description Type Preservation Service Interval Other D a i l y W e e k l y M o n t h l y Q u a r t e r l y S e m i - A n n u a l l y A n n u a l l y B i e n n i a l l y M a n u f a c t u r e r ' s R e c o m m e n d a t i o n C y c l i c a l ( N o n - C o n d i t i o n - B a s e d ) P r e v e n t i v e M a i n t e n a n c e C o n d i t i o n - B a s e d P r e v e n t i v e M a i n t e n a n c e R e g u l a t o r y R e h a b i l i t a t i o n Cooling Towers Check and lubricate pumps and fans X X Check safety controls X X Clean sump X X Sample (analyze water quality and add chemicals as indicated or as required) X X Domestic Water Pump and Tank Visually inspect pump (when accessible) X X Lubricate pump and motor X X Check pump operation in conjunction with well tanks X X Lubricate ejector pumps X X Measure water drawdown to verify proper operation X X Check air pressure in tank bladder and inflate as necessary X X Verify start and stop settings of pressure switch (differential should not exceed 25 psi) X X Drainage System (Roadway) Grate inspection (damage, blockage) X X Flush inlet and piping system X X

96 G uide for the preservation of Highw ay Tunnel System s Preservation Action Item Procedure Description Type Preservation Service Interval Other D a i l y W e e k l y M o n t h l y Q u a r t e r l y S e m i - A n n u a l l y A n n u a l l y B i e n n i a l l y M a n u f a c t u r e r ' s R e c o m m e n d a t i o n C y c l i c a l ( N o n - C o n d i t i o n - B a s e d ) P r e v e n t i v e M a i n t e n a n c e C o n d i t i o n - B a s e d P r e v e n t i v e M a i n t e n a n c e R e g u l a t o r y R e h a b i l i t a t i o n Dewatering Pumps (Fixed and Portable) Operate pumps – confirm operation X X Clean and visually inspect X X Lubricate pumps (prior to use for portable) X X Drainage System (Support Spaces) Grate inspection (damage, blockage) X X Flush inlet and piping system X X Emergency Eyewash If bacteria control solution is not used, flush and clean unit with pure water X X Drain unit and flush and clean the storage tank and refill with water and water treatment X X Emergency Generator Generator exercised X X Fuel lines inspected for leakage X X Fuel filter changed X X

Catalog of preservation actions 97 Preservation Action Item Procedure Description Type Preservation Service Interval Other D a i l y W e e k l y M o n t h l y Q u a r t e r l y S e m i - A n n u a l l y A n n u a l l y B i e n n i a l l y M a n u f a c t u r e r ' s R e c o m m e n d a t i o n C y c l i c a l ( N o n - C o n d i t i o n - B a s e d ) P r e v e n t i v e M a i n t e n a n c e C o n d i t i o n - B a s e d P r e v e n t i v e M a i n t e n a n c e R e g u l a t o r y R e h a b i l i t a t i o n Fuel sump drained X X Cooling air intake airflow confirmed – damper interlocks confirmed; no restrictions observed X X Cooling air discharge airflow confirmed – damper interlocks confirmed; no restrictions observed X X Environmental (Spill Prevention) Confirm all secondary containment (containment pallets, etc.) is in place and capacity is adequate X X X Confirm spill response materials (oil-dry, absorptive socks, etc.) are available near storage areas and quantities are adequate for all spill scenarios X X Confirm MSDS for all materials are posted and/or on file X X Fans and Dampers (General Ventilation) Operate fans and motor-operated dampers and listen for unusual noises and vibrations X X Check and record bearing temperatures X X Lubricate shaft-bearing pillow blocks and motor bearings X X Inspect V-belts for proper adjustment X X Clean centrifugal wheel, inlet, and other moving parts X X

98 G uide for the preservation of Highw ay Tunnel System s Preservation Action Item Procedure Description Type Preservation Service Interval Other D a i l y W e e k l y M o n t h l y Q u a r t e r l y S e m i - A n n u a l l y A n n u a l l y B i e n n i a l l y M a n u f a c t u r e r ' s R e c o m m e n d a t i o n C y c l i c a l ( N o n - C o n d i t i o n - B a s e d ) P r e v e n t i v e M a i n t e n a n c e C o n d i t i o n - B a s e d P r e v e n t i v e M a i n t e n a n c e R e g u l a t o r y R e h a b i l i t a t i o n Fans (Tunnel Ventilation) Operate fans and motor-operated dampers and listen for unusual noises and vibrations X X Check and record bearing and drive temperatures (with handheld infrared thermometer); if elevated temperature readings are found, investigate equipment condition and/or lubricant condition and level X X Check and record bearing and drive vibration readings (with handheld device); investigate equipment with abnormally high vibration readings X X Check oil level in fan bearings; confirm breather vent is open on pillow block bearing X X Check oil level in chain drive enclosures (as applicable); confirm breather vent is open X X Clean electric motor, including cooling fan and air screen and passages X X General cleaning fan interior and exterior X X Disconnect motor from power supply and regrease, ensuring chamber is 75% full of grease X X Operate fan through entire range of speeds and note any noises or vibrations (balance fan if required) X X Inspect inside and outside of housing and impellor for wear, deterioration, or build-up of material X X

Catalog of preservation actions 99 Preservation Action Item Procedure Description Type Preservation Service Interval Other D a i l y W e e k l y M o n t h l y Q u a r t e r l y S e m i - A n n u a l l y A n n u a l l y B i e n n i a l l y M a n u f a c t u r e r ' s R e c o m m e n d a t i o n C y c l i c a l ( N o n - C o n d i t i o n - B a s e d ) P r e v e n t i v e M a i n t e n a n c e C o n d i t i o n - B a s e d P r e v e n t i v e M a i n t e n a n c e R e g u l a t o r y R e h a b i l i t a t i o n Inspect fan and motor mounting bolts, anchors, and connections for proper torque, failures, or damage X X Change oil in bearing pillow blocks and drive reservoirs; grease fan bearings as applicable X X Remove inspection cover from drive guard and inspect chain to verify proper lubrication and wear; adjust if necessary X X Have testing laboratory perform oil analysis, including testing for contaminants X X Verify damper interlocks operate properly through all positions X X Verify that any dampers operate properly through all positions; lubricate if necessary X X Dampers (Tunnel Ventilation) Operate motor-operated dampers and check for unusual noises and vibrations X X Check bearings for wear and dampers for debris X X Lubricate damper bearings and all linkages X X Clean damper blades and linkages X X Inspect air ducts and passages – clean out debris as necessary X X

100 G uide for the preservation of Highw ay Tunnel System s Preservation Action Item Procedure Description Type Preservation Service Interval Other D a i l y W e e k l y M o n t h l y Q u a r t e r l y S e m i - A n n u a l l y A n n u a l l y B i e n n i a l l y M a n u f a c t u r e r ' s R e c o m m e n d a t i o n C y c l i c a l ( N o n - C o n d i t i o n - B a s e d ) P r e v e n t i v e M a i n t e n a n c e C o n d i t i o n - B a s e d P r e v e n t i v e M a i n t e n a n c e R e g u l a t o r y R e h a b i l i t a t i o n Fuel-Oil Day Tank Inspect tank for damage, corrosion, or leakage on both inside and outside; perform during same week as boiler or generator inspection X X Gas-Fired Equipment (General) Gas train checked for leaks X X Confirm vent piping is vented to the outside of the structure and is clear of blockages X X Cycle gas blocking valve X X Verify operation of all safeties and limit switches X X Verify operation of primary controls X X Test burner performance, flue gas CO2, smoke, and temperature X - X Check condition of stack, power vent fan, associated equipment X X General Equipment Exercise valves – lubricate per manufacturer’s recommendations X X Assess corrosion on all equipment and equipment supports; repair corrosion damage, properly prepare surface, and repaint equipment as required X X Check for missing or loose mounting hardware and fasteners; re-torque or replace fasteners as necessary X X

Catalog of preservation actions 101 Preservation Action Item Procedure Description Type Preservation Service Interval Other D a i l y W e e k l y M o n t h l y Q u a r t e r l y S e m i - A n n u a l l y A n n u a l l y B i e n n i a l l y M a n u f a c t u r e r ' s R e c o m m e n d a t i o n C y c l i c a l ( N o n - C o n d i t i o n - B a s e d ) P r e v e n t i v e M a i n t e n a n c e C o n d i t i o n - B a s e d P r e v e n t i v e M a i n t e n a n c e R e g u l a t o r y R e h a b i l i t a t i o n Vibration isolation in good condition; no short-circuiting or vibration from moving equipment to structure observed X X Oil sight glasses and gauges clean, visibility (readability) good X X Vent holes on bearing vents clean; confirm accurate level readings X X Flexible connections on piping and ductwork in good condition with no holes or tears X X Verify all spaces clean with no debris to hinder operations X X All fill and vent caps in place to prevent entry of water or dirt into equipment X X Hot Water Pump Visually inspect plumbing connections for signs of corrosion X X Visually inspect exterior of water heater for signs of leakage X X Lubricate pump and motor as required X X Pressure Vessels Confirm that inspection by agency having jurisdiction is current and certificate is posted and/or on file X X Inspect vessel for signs of leakage X X Inspect vessel for signs of undue corrosion X X

102 G uide for the preservation of Highw ay Tunnel System s Preservation Action Item Procedure Description Type Preservation Service Interval Other D a i l y W e e k l y M o n t h l y Q u a r t e r l y S e m i - A n n u a l l y A n n u a l l y B i e n n i a l l y M a n u f a c t u r e r ' s R e c o m m e n d a t i o n C y c l i c a l ( N o n - C o n d i t i o n - B a s e d ) P r e v e n t i v e M a i n t e n a n c e C o n d i t i o n - B a s e d P r e v e n t i v e M a i n t e n a n c e R e g u l a t o r y R e h a b i l i t a t i o n Sump Pumps Visually inspect pump X X Operate pump – note unusual noises or vibrations X X Lubricate pump, motor, and coupling X X Operate pump and measure current X X Sump clean and free of debris; clean as necessary X X Confirm sump pit covered – no fall hazard X X Septic System Check tank level X X Pump out tank (as indicated or as required) X X Ejector Pumps Check local indications (verification of proper functioning from control panel) X X Visually inspect pumps X X Unit Heaters Clean unit casing, fan, diffuser, coil, and/or motor thoroughly, and clean and repaint any corrosion spots on casing X X Tighten the fan guard, motor frame, and fan bolts, and check fan clearances X X

Catalog of preservation actions 103 Preservation Action Item Procedure Description Type Preservation Service Interval Other D a i l y W e e k l y M o n t h l y Q u a r t e r l y S e m i - A n n u a l l y A n n u a l l y B i e n n i a l l y M a n u f a c t u r e r ' s R e c o m m e n d a t i o n C y c l i c a l ( N o n - C o n d i t i o n - B a s e d ) P r e v e n t i v e M a i n t e n a n c e C o n d i t i o n - B a s e d P r e v e n t i v e M a i n t e n a n c e R e g u l a t o r y R e h a b i l i t a t i o n Inspect any control panel wiring to ensure that the insulation is intact and that all connections are tight X X Examine all heater and relay contacts for pitting or burning and replace if necessary X X Lubricate motor if necessary X X Check operation controls X X Underground Fuel Oil Tank Confirm operation of liquid level sensor and low-level alarm X X Confirm operation of high-level alarm X X Check leak detection equipment for operation X X Variable Frequency Drives Verify that environmental conditions required by unit manufacturer are being met by equipment room HVAC equipment (typically 50–104°F) X X Verify that cooling air screens and passageways are clean and unobstructed X X Water Storage Tank (Fire Protection) Visually inspect tank exterior X X X Inspect water heating system and low-temperature alarm (monthly supervised, weekly unsupervised during heating season) X X X X

104 G uide for the preservation of Highw ay Tunnel System s Preservation Action Item Procedure Description Type Preservation Service Interval Other D a i l y W e e k l y M o n t h l y Q u a r t e r l y S e m i - A n n u a l l y A n n u a l l y B i e n n i a l l y M a n u f a c t u r e r ' s R e c o m m e n d a t i o n C y c l i c a l ( N o n - C o n d i t i o n - B a s e d ) P r e v e n t i v e M a i n t e n a n c e C o n d i t i o n - B a s e d P r e v e n t i v e M a i n t e n a n c e R e g u l a t o r y R e h a b i l i t a t i o n Inspect low-water-level alarm (quarterly supervised, monthly unsupervised) X X X X Inspect and test automatic tank fill valve X X X Test high- and low-temperature alarms during heating season X X X Test tank heating system prior to heating season X X X Visually inspect tank interior (3 or 5 years per NFPA 25) X X STRUCTURAL Tunnel Structure Remove and replace delaminated tiles X Replace missing tiles X Remove bulging tiles X Repair spalls X Remove delaminated concrete X Repair active-leaking cracks to prevent further structure deterioration X Repair severe leakage through concrete liner, control joints, or expansion joints X Repair or replace deteriorated or failed expansion joints X Wash walls and ceiling X X Visually inspect walls, ceilings, slabs, pavements, walkways, stairs, etc., for structural deficiencies X X

Catalog of preservation actions 105 Preservation Action Item Procedure Description Type Preservation Service Interval Other D a i l y W e e k l y M o n t h l y Q u a r t e r l y S e m i - A n n u a l l y A n n u a l l y B i e n n i a l l y M a n u f a c t u r e r ' s R e c o m m e n d a t i o n C y c l i c a l ( N o n - C o n d i t i o n - B a s e d ) P r e v e n t i v e M a i n t e n a n c e C o n d i t i o n - B a s e d P r e v e n t i v e M a i n t e n a n c e R e g u l a t o r y R e h a b i l i t a t i o n Remove icicles above travel roadway X X Replace damaged or deteriorated timbers in timber-lined tunnels X Install rock anchors at unstable rock locations in unlined rock tunnels X Repair leaking joints in sunken-tube tunnels X Roadway Repair or replace deteriorated structural roadway slabs X Repair or replace pavement wearing surfaces X Signs Visually inspect supports and readability of signs X X