BC Class C-R Low Energy FSR flashcards

32 cards. Read the term and the definition here. The deck at the top of this page is optional.

Authority having jurisdiction

The organization or official responsible for enforcing the adopted code and approving installations, permits, and inspections for the FSR system.

Listed and labeled

Equipment tested by an approved agency and marked to show it meets a recognized standard; listing conditions must be followed for acceptance.

Maximum allowable working pressure

The highest pressure a component or system is designed to withstand in normal service; exceeding it requires a higher-hazard design category.

Fuel-gas code scope

The adopted gas code governs piping, materials, and testing for fuel gas, while separate oil-burner codes govern fuel-oil piping installations.

Sediment trap purpose

A drip leg installed downstream of the regulator and shutoff that captures debris and condensate before they reach appliance controls.

Pressure regulator function

A device that reduces supply pressure to the appliance's rated inlet pressure and maintains it within the regulator's rated flow capacity.

Manual shutoff valve

A listed valve at the appliance connection and supply point that allows the fuel to be isolated for service without cutting pipe.

Listed flexible connector

A fuel-rated flexible hose sized to the appliance input, used to connect the appliance while protecting against vibration and misalignment.

Equivalent length method

A sizing method adding fitting and valve equivalent lengths to measured pipe length to select a size that meets allowable pressure drop.

Longest run governs

In branch piping, the most remote appliance's equivalent length typically controls pipe sizing because it has the greatest pressure loss.

Connected load total

The sum of appliance input ratings served by a common header, used to size the meter, regulator, and main piping.

Accessible valve location

Regulators, shutoffs, and traps must remain reachable for service; they cannot be concealed in inaccessible spaces or buried.

Pipe support spacing

Code-required intervals and points of support that carry pipe weight so fittings and appliance connections are not loaded.

Thread compound application

Approved compound or tape applied to male threads only, leaving the first two threads bare to prevent compound entering the fuel line.

Two-wrench rule

Using one wrench to hold the fitting and one to turn the pipe prevents torque from damaging valves, regulators, and controls.

Regulator orientation

Regulators must be installed per the flow arrow and vent position, with a vent line to a safe location when venting indoors.

Capped open ends

Plugging or capping open pipe ends during construction keeps debris and moisture out of the line until final connection.

Pneumatic pressure test

Testing new piping with air or inert gas at code-required pressure and duration, with appliances and regulators isolated or removed.

Gauge selection for test

A calibrated gauge whose range places the test pressure near mid-scale gives the most accurate reading during the pressure test.

Leak detection method

Approved soap solution or an electronic detector applied to joints; an open flame must never be used to locate a leak.

Purging before fuel

Removing air and debris from the line with the proper medium, purged to a safe location, before introducing fuel to the appliance.

Regulator lockup check

Verifying that the regulator closes tightly and holds outlet pressure when flow stops, confirming proper seat and vent operation.

Low inlet pressure cause

Appliance inlet pressure below rating under load can indicate an undersized regulator, a partly closed valve, or a line restriction.

Regulator vent blockage

A blocked or missing regulator vent can cause high or fluctuating outlet pressure and must be cleared or repaired promptly.

Sediment trap servicing

Cleaning a filled trap restores flow and prevents intermittent appliance lockout; the debris source should also be investigated.

Service log record

A dated record of inspections, repairs, and replacements that documents system condition and supports troubleshooting and compliance.

Hot-work permit

Required before brazing or welding; it establishes combustible removal, fire watch, and extinguisher provisions at the worksite.

Lockout tagout

Isolating fuel and energy sources, applying locks and tags, and verifying zero energy before opening or servicing lines.

Confined space entry

Entry into a space with limited access requires atmosphere testing, ventilation, and a standby attendant before and during work.

Personal protective equipment

Safety glasses, gloves, and hearing protection for cutting and threading; respiratory protection where dust or fumes are present.

Cylinder storage rules

Fuel cylinders are stored upright, secured, away from heat, and separated per code to prevent tipping, leakage, and fire exposure.

Emergency shutdown location

Knowing where the fuel supply can be quickly isolated and posting emergency contacts prepares the crew to respond to a release.