Use this valve testing schedule to keep your industrial chilling equipment running safely and smoothly. The schedule is based on recommendations by the Technical Standards Safety Association.

1. Industrial Chilling Equipment
Valve Testing Schedule
VALVEOVERPRESSUREPROTECTION
SAFETY
(A) Serviced every 5 Years if possible; (B) Servicing may be extended to every 10 years if system pressure testing is performed every 5 years.
* No requirements
Recommended by Technical Standards Safety Association
SYSTEM IN-SERVICE TESTING
MAXIMUM SERVICING
INTERVAL
SYSTEM TEST OR LIFT TEST MAXIMUM LIFT TEST
Power Boilers
Steam operating above 103kPa
(15 psig)
Hot water operating above 1103 kPa
(160) or 121°C (250°C)
Annually * 5 years
Heating Boilers
Hot water up to 1103 kPa (160 psig) at
121°C (250°C)
2 years * 6 years
Heating Boilers
Steam up to 103kPa (15 psig)
* Annually 5 years
Pressure Vessels
Steam, air
* Annually 5 years (A)
Pressure Vessels
Ammonia, flammable cryogenic, and
dry flammable non-corrosive non-toxic
non-fouling gases
Not recommended Not recommended 5 years
Pressure Vessels
Non flammable cyrogenic and dry
non-corrosive nontoxic non-flammable
non-fouling gases
5 years optional * 5 years (B)
Refrigerant Pressure Vessels
(under CSA B52)
* * 5 years
All other pressure vessels not
listed
* * 3 years