Bulletins

Customers should notify NABCO, Inc. in the event of a detonation inside a NABCO total containment vessel. This notification would allow NABCO to follow up on the post detonation inspection and testing requirements as necessary.

After a detonation inside the TCV, specifically any detonation of a fragmenting device, the interior of the TCV should be visually inspected for damage.

1. After the TCV has been allowed to vent and cool off and after all required evidence has been collected per department guidelines, the TCV should be cleaned according to Section 4.2.
2. Once clean, a visual inspection should be performed inside the TCV in an effort to insure that there are no significant penetrations of the vessel wall. Section C below identifies criteria to be used for determining whether a penetration requires repair.
3. On the NABCO Model 64-TCV, any penetration that exceeds 1/2' in depth may require repair. Depth of penetration is to be determined by using a standard micrometer or depth gauge. Indentation should be cleaned of blast residue before measurement. Compressed air should be blown into indentation to clean. If an indentation is found deeper than 1/2', immediately contact NABCO, Inc. Do not repair damaged area without prior written consent of NABCO, Inc. Failure to notify Nabco will void all warranties on the TCV for future use. Welding of the TCV without prior written consent voids all written warranties from NABCO. After notification of the damage, Nabco will determine in conjunction with the owner the next step to be taken to repair the damaged area.
   1. A written formal report will be issued to place the TCV back into service after repair of any damage. The TCV is not to be used until NABCO; Inc has issued this formal report.
   2. All repairs to the TCV will be done in accordance with approved inspection and repair plans of NABCO, Inc.
4. In addition to penetrations past the accepted depth, any indications of cracks should be handled in the same method as described in Section C. Any indication of cracks should be brought to the attention of NABCO, Inc., regardless of the depth of the possible cracks. All restrictions discussed in Section C - C-1 and C-2 above are applicable.

After a detonation inside the TCV, specifically any detonation of a fragmenting device, the interior of the TCV should be visually inspected for damage.

1. After the TCV has been allowed to vent and cool off and after all required evidence has been collected per department guidelines, the TCV should be cleaned according to Section 4.2 of the NABCO Operators Manual.
2. Once clean, a visual inspection should be performed inside the TCV in an effort to insure that there are no significant penetrations of the vessel wall. Section C below identifies criteria to be used for determining whether a penetration requires repair.
3. On the NABCO Model 42-TCV, any penetration that exceeds 3/8' in depth may require repair. Depth of penetration is to be determined by using a standard micrometer or depth gauge. Indentation should be cleaned of blast residue prior to measurement. Compressed air should be blown into indentation to clean. If an indentation is found deeper than 3/8', immediately contact NABCO, Inc. Do not repair damaged area without prior written consent of NABCO, Inc. Failure to notify NABCO will void all warranties on the TCV for future use. Welding of the TCV without prior written consent voids all written warranties from NABCO. After notification of the damage, NABCO will determine in conjunction with the owner the next step to be taken to repair the damaged area.
   1. A written formal report will be issued to place the TCV back into service after repair of any damage. The TCV is not to be used until NABCO, Inc has issued this formal report.
   2. All repairs to the TCV will be done in accordance with approved inspection and repair plans of NABCO, Inc. 
4. In addition to penetrations past the accepted depth, any indications of cracks should be handled in the same method as described in Section C for penetrations. Any indication of cracks should be brought to the attention of NABCO, Inc., regardless of the depth of the possible cracks. All restrictions discussed in Section C - C-1 and C-2 above are applicable.