Apply chalk to watertight flat sealing continuously.
Chalk test watertight doors.
Mil dtl 901 shock test h i.
11 2015 cryptological technician technical 3rd class shannen maxwell from sierra vista arizona uses chalk on a quick acting watertight door to check its watertight integrity aboard uss cole ddg 67 feb.
Chalk and hose tests for seals are time consuming and sometimes completely impractical.
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.
This method was the traditional way for testing hold cover compression but does not test the watertight integrity of the hold.
Close the door tightly then open.
Chalk testing is one of the key elements in quality testing at the manufacturing plant.
Rules for building and classing steel vessels.
All doors and hatches are chalk tested to make sure the dogs are adjusted properly and the frame was not warped in the manufacturing process.
Title 46 title 46 part 163 001 doors watertight sliding and door controls for merchant vessels through the 1991 edition abs standard.
Ensure that all dogs or closing assemblies move freely and close securely.
The chalk must have continuously around the watertight sealing it has water tightness.
What is chalk method.
If there are irregularities in the chalk markings then it is assumed that these areas are not weather tight.
Chalk is applied evenly around the knife edge coaming compression bars or panel cross seams of doorways.
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.
The rubber joints are carefully examined.
Check the watertight door sealing.
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.
Chalk testing is used for visual inspection of the compression integrity of doors and hatches on vessels that hold the potential for flooding.
Code of federal regulations cfr standards.
Watertight hatch cover and watertight doors tightness can be check by chalk method or hose methods.
