SOW Attachment 3. ELECTRIC_BOILER_REVISED_05282020.pdf
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- Solicitation number
- SM-382236
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This is a boiler maintenance punch list for electric water boilers that must be ready for operation by October 1. A qualified boiler contractor is required to perform an annual inspection following the manufacturer's recommendations.
The maintenance checklist for water boilers includes: performing lockout-tagout (LOTO) of electrical power with NFPA 70E training documentation; inspecting covers, removable panels, process piping, fittings, and flanges; checking power entrance lugs and contactors for tightness and condition; inspecting all wiring, insulation, fuses, and overloads; examining heating elements for corrosion and water leakage; checking heat element fasteners and lugs; using an ohmmeter to verify balanced resistance between phases on the load side of heat element contactors; using a megger (500VDC minimum) to check contactor load side terminals to ground, noting any readings below 1 megohm; inspecting all gasketing for leaks; examining pressure vessel interior for scaling and corrosion; checking operating and limit controls; testing boiler pressure and temperature gauges; testing pressure relief valve operation for proper flow and leak tightness using lift test method; and providing documentation of findings for A.S.M.E. CSD-1 compliance with demonstrated familiarity with this standard. The contractor must have a volt-ohm meter (VOM) and megohmeter available. Water pump tasks include checking boiler recirculating and bypass pump operation and reporting unusual findings. In-house crafts are to check HWS pump rotation, motor mounts, amperes, and bearings, and tighten all pump electrical connections.
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Text version
ELECTRIC BOILERS
HAVE A QUALIFIED BOILER CONTRACTOR PERFORM AN ANNUAL INSPECTION OF BOILER FOLLOWING
MANUFACTURER'S RECOMMENDATION. BOILER TO BE READY FOR OPERATION BY OCTOBER 1.
BOILER MAINTENANCE PUNCH LIST:
WATER BOILERS
• PERFORM LOCK OUT- TAG OUT (LOTO) ELECTRICAL POWER TO BOILER // LOTO 2 AND
DOCUMENTATION OF NFPA 70E TRAINING
• CHECK CONDITION OF ALL COVERS AND REMOVABLE PANELS
• INSPECT PROCESS PIPING, FITTINGS AND FLANGES
• CHECK TIGHTNESS AND CONDITION OF POWER ENTRANCE LUGS AND CONTACTORS ON
LINE AND LOAD SIDES
• INSPECT ALL WIRING, INSULATION, FUSES AND OVERLOADS
• INSPECT HEATING ELEMENTS, CHECK FOR COROSION AND WATER LEAKAGE
• CHECK HEAT ELEMENT FASTENERS AND LUGS FOR TIGHTNESS
• USING AN OHMMETER CHECK FOR BALANCED RESISTANCE BETWEEN PHASES ON LOAD SIDE OF
THE HEAT ELEMENT CONTACTORS // VENDOR TO HAVE VOM AND SKILL TO USE
• USING A MEGGER (500VDC MIN) CHECK CONTACTOR LOAD SIDE TERMINALS TO GROUND
NOTE ANY READINGS < 1 MEGOHM // VENDOR TO HAVE MEGOHMETER FOR SPECIFIED
MINIMUM
• CHECK ALL GASKETING FOR LEAKS
• INSPECT PRESSURE VESSLE INTERIOR CHECK FOR SCALING AND COROSION
• CHECK ALL OPERATING AND LIMIT CONTROLS
• CHECK BOILER PRESSURE AND TEMPERATURE GAGES FOR PROPER OPERATION
• CHECK PRESSURE RELIEF VALVE OPERATION TEST FOR PROPER FLOW AND LEAK TIGHTNESS //
LIFT TEST METHOD TO BE UTILIZED
• CHECK ALL OPERATING AND LIMIT CONTROLS // PER MANUFACTURER RECOMMENDATIONS
• RESTORE OPERATION PENDING SATISFACTORY CHECK OUT
• PROVIDE DOCUMENTATION OF FINDINGS FOR A.S.M.E. CSD-1 COMPLIANCE // DOCUMENTED
OR DEMONSTRATED FAMILIARITY WITH THIS STANDARD
WATER PUMPS
• CHECK BOILER RECIRCULATING PUMPS AND BYPASS PUMP OPERATION
• REPORT ANY UNUSUAL FINDINGS
IN HOUSE CRAFTS TO:
• CHECK HWS PUMP ROTATION
• CHECK PUMP MOTOR MOUNTS
• CHECK PUMP AMPERES
• CHECK BEARINGS
• TIGHTEN ALL PUMP ELECTRICAL CONNECTION
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