5.3104.12 Leak Detection and Repair—Distribution Leaks

Hydronic Heating (Hot Water and Steam)
Equipment Maintenance, Testing, and Repair
Desired Outcome: 
System does not leak
For supporting material, see Referenced Standards.
Check for presence of asbestos-containing materials (ACMs)

Potential ACMs will be handled in accordance with SWS 2.0110.2 Potential Asbestos-Containing Materials

Ensure a safe work environment


Leaks will be detected through visual inspection of piping and insulation system

Damaged insulation will be removed and properly disposed of

Determine leak location

Repair leak

Nearest valves on either side of leak location will be closed

Water/condensate from isolated section will be drained to safe and appropriate location

Piping, fitting, or device will be repaired or replaced

Eliminate water or steam supply to leak location

Ensure distribution system does not leak

Testing and verification

Isolated section will be reconnected and repressurized

System will be filled and air will be eliminated from system

Repaired pipe, fitting, or device will be visually inspected

Confirm system is safe for operation

Reinsulate area

Where insulation was removed, repaired pipe, fitting, or device will be reinsulated with new insulation to IECC IECC International Energy Conservation Code and ASHRAE ASHRAE American Society of Heating, Refrigerating and Air-Conditioning Engineers, www.ashrae.org 90.1, at a minimum

Reduce energy loss

Maintain safe surface temperature

Dry or restore building materials saturated by leak

Damaged materials will be removed, and replaced in a safe manner and in accordance with all applicable codes

Bulk moisture will be eliminated

Prevent an environment for biological growth

Create clean, dry surface for insulation installation