CPI CPI Drain Cover & Entrapment Prevention 2 — Questions and Answers
Question 1: What safety device automatically shuts off the pool pump if a blockage is detected at a suction outlet?
- Anti-entrapment drain cover
- Safety Vacuum Release System (SVRS) (Correct answer)
- Pressure relief valve
- Flow meter
Correct answer: Safety Vacuum Release System (SVRS)
A Safety Vacuum Release System (SVRS) detects a blocked drain and shuts off the pump within seconds to eliminate dangerous suction.
Question 2: Under the VGB Act, what is the minimum required action if an existing pool drain cover is broken or missing?
- Post a warning sign until it is replaced
- Close the pool immediately until a compliant cover is installed (Correct answer)
- Allow use at reduced bather load
- Replace it within 30 days while the pool remains open
Correct answer: Close the pool immediately until a compliant cover is installed
A broken or missing drain cover constitutes an immediate entrapment hazard, and the pool must be closed until a compliant replacement is installed.
Question 3: What is the purpose of the 'unblockable drain' design concept in pool safety?
- It prevents algae from growing in the drain sump
- It creates a drain opening large enough that a single bather cannot fully obstruct it (Correct answer)
- It eliminates the need for a circulation pump
- It allows the pool to self-drain
Correct answer: It creates a drain opening large enough that a single bather cannot fully obstruct it
An unblockable drain is sized so that a bather's body cannot fully cover and seal the suction opening, preventing body entrapment.
Question 4: What should a CPI inspector do if they find a drain cover that is correct but has been installed at an angle, creating gaps?
- Note it as cosmetic only
- Flag it as a safety deficiency requiring correction (Correct answer)
- Approve it if the cover is otherwise undamaged
- Replace the sump, not the cover
Correct answer: Flag it as a safety deficiency requiring correction
An improperly seated cover with gaps can allow hair or limbs to enter the sump area, presenting an entrapment risk that must be corrected.
Question 5: Which of the following is a recognized type of entrapment that anti-entrapment drain covers help prevent?
- Thermal entrapment
- Evisceration entrapment (Correct answer)
- Chemical entrapment
- Electrical entrapment
Correct answer: Evisceration entrapment
Evisceration entrapment — where a drain creates suction strong enough to cause internal injury — is one of the five recognized entrapment types addressed by drain cover standards.
Question 6: How often should drain covers be inspected and tested for secure attachment in a public pool?
- Only at opening and closing of the season
- At least annually, or per state code — whichever is more frequent (Correct answer)
- Every 5 years during a major renovation
- Only when a complaint is received
Correct answer: At least annually, or per state code — whichever is more frequent
Drain covers should be inspected at minimum annually (and per state schedule) to confirm secure attachment and absence of damage or loosening.
CPI CPI Drain Cover & Entrapment Prevention 2
What safety device automatically shuts off the pool pump if a blockage is detected at a suction outlet?