What is chalk method.
Chalk test watertight doors.
A successful chalk test does not guarantee that a closure is watertight but if the gasket is in good condition and the dogs are properly adjusted it does provide a reasonable assurance of watertight integrity.
Title 46 title 46 part 163 001 doors watertight sliding and door controls for merchant vessels through the 1991 edition abs standard.
Chalk testing is one of the key elements in quality testing at the manufacturing plant.
The chalk must have continuously around the watertight sealing it has water tightness.
Check the watertight door sealing.
Watertight hatch cover and watertight doors tightness can be check by chalk method or hose methods.
A chalk test is a way of verifying that the gasket in a watertight door is evenly contacting the frame which ensures a watertight seal.
This method was the traditional way for testing hold cover compression but does not test the watertight integrity of the hold.
Rules for building and classing steel vessels.
Periodically perform either a chalk or light test on all watertight doors to ensure that the knife edge makes contact with the entire door gasket.
Chalk is applied evenly around the knife edge coaming compression bars or panel cross seams of doorways.
Apply chalk to watertight flat sealing continuously.
The rubber joints are carefully examined.
Ensure that all dogs or closing assemblies move freely and close securely.
The chalk test is a simple means of determining if the gasket is in continuous contact with the knife edge when a closure is dogged.
If there are irregularities in the chalk markings then it is assumed that these areas are not weather tight.
Shipboard machinery equipment and systems requirements for.
Close the door tightly then open.
Code of federal regulations cfr standards.
Chalk testing is used for visual inspection of the compression integrity of doors and hatches on vessels that hold the potential for flooding.
Iacs states that this test should be followed by a hose test.
Mil dtl 901 shock test h i.
