LP-GAS TEXAS BOBTAIL EXAM
QUESTIONS AND CORRECT ANSWERS.
VERIFIED 2025/2026.
Required for all piping systems that serve _______ psig appliance systems. normally operated at
11 in WC pressure - ANS 1/2
required for all piping systems that serve 1/2 psig appliance systems. normally operated at
______ in WC pressure - ANS 11
above group LP-gas containers must not be located within ____ feet of the vertical plane
beneath overhead electric power lines that are over _____ volts - ANS 6
600
Fire Extinquishers must have minimum capacity of _____ lbs dry chemical with a ___ : ___
rating - ANS 18
B:C
Cargo Tank Inspection and Tests
V= ____ ____ inspection every __ years
K= ____ test every ____ years
P= ____ test every ____ years
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,I= ____ ____ inspection every __ years - ANS external visual inspection 1 year
leak test 1 year
pressure test 5 years
internal visual inspection 5 years
what is the lower limit of combustibility of odorized LP-gas - ANS 1/5
A propane leak can - ANS Displace Oxygen an causes suffocation
Bulk plant emergency shutoff for 4001 gal aggregate wc or more shall have - ANS opening of
1 1/4 in or more
pneumatically operated ESV
pneumatically operated internal valves
back-check valves for into tank only
Thermal element must be located within ____ ft of the ESV and can NOT BE _____ - ANS 5
painted
All underground pipe, metallic or poly must be covered by ____ inches or ____ inches if damage
is likely - ANS 12
18
Outdoor metallic piping shall have ___ pressure limits - ANS no
Polyethylene piping systems shall be limited to ____ psig - ANS 30
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, Polyethylene piping shall be used _______ only - ANS underground
Texas school leak tests must last a minimum of ____ minutes - ANS 30
LPG form ____ must be keep on file for ____ years - ANS 30
5
Texas school leak tests must be done every ____ years - ANS 2
The term NQT on cargo tanks means - ANS Non-Quenched Tempered
Single family home pressure testing must last a minimum of ___ minutes - ANS 10
Pressure testing and inspection should be no less than ____ hour for every ____ feet -
ANS 1/2
500
cylinders with ____ lbs propane through ____ lbs propane capacity for vapor service shall have
overfilling prevention device and a fixed liquid level gauge - ANS 4.2
40
cylinders with 4.2 lbs propane through 40 lbs propane capacity for vapor service shall have ____
____ ____ and a ____ ____ ____ _____ - ANS overfilling prevention device
fixed liquid level gauge
cylinders are designed with atleast ____ psig service pressure - ANS 240
3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
QUESTIONS AND CORRECT ANSWERS.
VERIFIED 2025/2026.
Required for all piping systems that serve _______ psig appliance systems. normally operated at
11 in WC pressure - ANS 1/2
required for all piping systems that serve 1/2 psig appliance systems. normally operated at
______ in WC pressure - ANS 11
above group LP-gas containers must not be located within ____ feet of the vertical plane
beneath overhead electric power lines that are over _____ volts - ANS 6
600
Fire Extinquishers must have minimum capacity of _____ lbs dry chemical with a ___ : ___
rating - ANS 18
B:C
Cargo Tank Inspection and Tests
V= ____ ____ inspection every __ years
K= ____ test every ____ years
P= ____ test every ____ years
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,I= ____ ____ inspection every __ years - ANS external visual inspection 1 year
leak test 1 year
pressure test 5 years
internal visual inspection 5 years
what is the lower limit of combustibility of odorized LP-gas - ANS 1/5
A propane leak can - ANS Displace Oxygen an causes suffocation
Bulk plant emergency shutoff for 4001 gal aggregate wc or more shall have - ANS opening of
1 1/4 in or more
pneumatically operated ESV
pneumatically operated internal valves
back-check valves for into tank only
Thermal element must be located within ____ ft of the ESV and can NOT BE _____ - ANS 5
painted
All underground pipe, metallic or poly must be covered by ____ inches or ____ inches if damage
is likely - ANS 12
18
Outdoor metallic piping shall have ___ pressure limits - ANS no
Polyethylene piping systems shall be limited to ____ psig - ANS 30
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, Polyethylene piping shall be used _______ only - ANS underground
Texas school leak tests must last a minimum of ____ minutes - ANS 30
LPG form ____ must be keep on file for ____ years - ANS 30
5
Texas school leak tests must be done every ____ years - ANS 2
The term NQT on cargo tanks means - ANS Non-Quenched Tempered
Single family home pressure testing must last a minimum of ___ minutes - ANS 10
Pressure testing and inspection should be no less than ____ hour for every ____ feet -
ANS 1/2
500
cylinders with ____ lbs propane through ____ lbs propane capacity for vapor service shall have
overfilling prevention device and a fixed liquid level gauge - ANS 4.2
40
cylinders with 4.2 lbs propane through 40 lbs propane capacity for vapor service shall have ____
____ ____ and a ____ ____ ____ _____ - ANS overfilling prevention device
fixed liquid level gauge
cylinders are designed with atleast ____ psig service pressure - ANS 240
3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
