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| Equalizer |  |
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| Crane with jacks. |  |
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| Jacks on web of crane. |  |
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The above crane was repaired by the David L. Holt Co. in which Dan R. Dalton was employed as the General Manager and ran a crew of 9 personnel on the ground. The following letter is form the Gottlieb Barnett Bridges, Consulting Engineering firm, stating the job well done by Dan and his crew.
To: Dan R. Dalton 9/4/97
From:Jeff Boos-GBB
Subject: Port Authority of Trinidad and Tobago
Port of Port Spain, W.I.
Container Crane No. 759, structural repair straightening work.
Material test coupon examination.
Mr. Dalton
As discussed please find attached a copy of one of the nondestructive examination reprts dated March 1, 1994 of a test coupon on the subject Patt Crane. Our office and Patt requested the test coupon to be taken to verify the Flame-Straightened plate material properties after David L. Holt Co. completed the repair work on the Patt container crane No. 759 structure.
The test coupon proved that the flame straightening technique used by your company did not impair the structural integrity of the (six million dollar plus) container handling crane. In fact, the original A 36 steel plate physical properties in the crane that were effected by the straightening process were actually improved. (See attached test results).
To date the container crane is still in operation as the Patt and we have not experienced any fatigue cracks or other structural problems as a result of the extensive Flame Straightening that was done to the cranes lower gantry structure. The project at the Port of Spain was a huge success since the process used by your firm considerably reduced the douwn time and repair costs of the crane which was damaged when a container vessel hit the cranes lower gantry frame.
This is not the first time our firm has employed a company such as yours to restore a damaged structure to OEM's original dimensions and tolerances. Typically, if a client is wanting to avoid the high cost of replacing a damaged structure and reduce the down time associated with fabrictaion of a new structure. The Flame-Straightening methods, such as used by your firm is commonly perforned with nearly a 100% success rate.
If you need any other assistance or want to obtain additional information on the Patt repair project you can contact Mr. Omar Seetahal.
Thank you for your assistance on the Patt project we look forward to working with your firm on future projects.
