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NFPA 22|AWWA D103|FM Global|NSF/ANSI 61
Maintenance Guide

Tank Maintenance Guide

Comprehensive care procedures to maximize tank lifespan and performance. Regular maintenance ensures decades of reliable service.

Maintenance Overview

Proper Maintenance = Maximum Lifespan

Regular maintenance is essential for ensuring the longevity, safety, and optimal performance of your vertical storage tanks. Follow these schedules and procedures for reliable service.

30+ yr
With Proper Care
5min
Daily Inspection
98%
Issue Prevention
24/7
Support Available
Schedules

Maintenance Schedule by Frequency

Daily

Daily Inspections

  • Check water level
  • Visual exterior inspection
  • Check for leaks at fittings
  • Verify heating system (if applicable)
Weekly

Weekly Checks

  • Inspect valve operation
  • Check overflow piping
  • Inspect vent screens
  • Review level indicator readings
Monthly

Monthly Review

  • Test alarm systems
  • Inspect foundation
  • Check coating condition
  • Review maintenance log
Quarterly

Quarterly Service

  • Water quality testing
  • Exercise all valves
  • Inspect anchors/bolts
  • Check cathodic protection
Annual

Annual Inspection

  • Full interior inspection
  • Coating assessment
  • Structural evaluation
  • Compliance documentation

Safety First

Always follow proper safety procedures when performing tank maintenance. Key safety requirements include:

  • ⚠ Never enter a tank without proper confined space procedures and permits
  • ⚠ Always use fall protection when working at heights
  • ⚠ Ensure proper ventilation before any interior work
  • ⚠ Use lockout/tagout procedures on all connected equipment
  • ⚠ Have a standby person for all confined space entries
  • ⚠ Follow all OSHA regulations and company safety policies
Procedures

Detailed Maintenance Procedures

Tank Cleaning Procedure

  1. Drain tank completely and allow to ventilate
  2. Perform confined space entry procedures
  3. Rinse interior with clean water
  4. Apply appropriate cleaning solution
  5. Scrub surfaces with non-abrasive tools
  6. Rinse thoroughly with clean water
  7. Disinfect with NSF-approved sanitizer (potable water tanks)
  8. Final rinse and refill

Visual Inspection Procedure

  1. Inspect exterior coating for chips, cracks, or corrosion
  2. Check all bolted joints for weeping or leaks
  3. Examine foundation for settling, cracks, or erosion
  4. Inspect roof and vent for damage or blockage
  5. Check insulation and jacketing integrity (if applicable)
  6. Verify all safety signage is legible
  7. Document findings with photos and notes

Valve & Fitting Maintenance

  1. Operate all valves through full range of motion
  2. Check for leaks at valve packing and flanges
  3. Lubricate valve stems as specified by manufacturer
  4. Inspect gaskets and replace if deteriorated
  5. Verify fire department connections are accessible and functional
  6. Test backflow preventers per local requirements

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