How to perform a chalk test on an individually dogged watertight door and how to adjust a dog should it fail the test.
Chalk test watertight doors.
Apply chalk to watertight flat sealing continuously.
The rubber joints are carefully examined.
Testing procedures of watertight compartments.
Chalk and hose tests for seals are time consuming and sometimes completely impractical.
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.
How to perform a chalk test on a wheel operated watertight door and how to adjust door dogs should it fail the test.
Mil dtl 901 shock test h i.
The spray from a nozzle of 12 mm diameter is sprayed from a distance of 1 to 1 5 m with a water jet pressure of 0 5 ms 1.
Chalk testing chalk powder is applied to the coaming compression bars and panel cross seams the hatches are then closed and re opened.
A test to verify the tightness of a joint by a jet of water with.
Rules for building and classing steel vessels.
Chalk testing is one of the key elements in quality testing at the manufacturing plant.
Code of federal regulations cfr standards.
Title 46 title 46 part 163 001 doors watertight sliding and door controls for merchant vessels through the 1991 edition abs standard.
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.
2 a every watertight door of the sliding type shall be capable of being operated by efficient hand operated gear both at the door itself and from an accessible position above the bulkhead deck.
Very important to ensure the door perfo.
Chalk is applied evenly around the knife edge coaming compression bars or panel cross seams of doorways.
Installed and all penetrations including pipe connections fitted and before any ceiling and cement work is applied over the joints.
The chalk must have continuously around the watertight sealing it has water tightness.
Close the door tightly then open check the watertight door sealing.
The hose test is used in conjunction to determine the weather tightness of doors and hatch covers.
Very important to ensure the door ope.
Specific test requirements are given in 4 4 and table 1.
