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Safety Recommendation Details

Safety Recommendation M-90-095
Details
Synopsis: ON JUNE 29, 1989, THE U.S. SELF-ELEVATING UNINSPECTED LIFT BOAT M/V TITAN FINISHED ITS WORK AT CORPUS CHRISITI OIL AND GAS BLOCK 427 WHERE IT HAD BEEN ELEVATED IN ABOUT 95 FEET OF WATER. THE TITAN HAD A CREW OF FOUR, PLUS FIVE LAREDO CONSTRUCTION, INC., EMPLOYEES ABOARD. ABOUT 1330 THE MASTER LOWERED THE LIFTBOAT AND HEADED IT TOWARD FREPORT, TEXAS. WHILE THE 160-FOOT LEGS WERE BEING RAISED, THE TITAN BEGAN LISTING TO STARBOARD. THE MASTER BELIEVED THE LIST WAS CAUSED BY MUD ON THE STARBOARD LEG PAD. HOWEVER, THE MASTER FOUND ON INSPECTION THAT THE STARBOARD LEG WAS FLOODED AND GUSHING WATER ON DECK THROUGH A FRACTURE OR FRACTURES IN THE LEG. THE MASTER DIRECTED THE LEGS TO BE LOWERED TO IMPROVE THE STABILITY OF THE VESSEL. WHILE THE LEGS WERE BEING LOWERED THE TITAN CAPSIZED ABOUT 1345.
Recommendation: THE NTSB RECOMMENDS THAT THE U.S. COAST GUARD: REQUIRE THAT LIFEBOAT STABILITY CRITERIA ALLOW FOR THE ADVERSE EFFECTS OF RAISED FLOODED LEGS, WAVE-INDUCED MOTIONS, AND SEA WATER ON DECK.
Original recommendation transmittal letter: PDF
Overall Status: Closed - Unacceptable Action
Mode: Marine
Location: Gulf of Mexico, GM, United States
Is Reiterated: Yes
Is Hazmat: No
Is NPRM: No
Accident #: DCA89MM052
Accident Reports:
Capsizing and Sinking of the U.S. Self-Elevating Liftboat M/V Titan
Report #: MAR-90-07
Accident Date: 6/29/1989
Issue Date: 1/14/1991
Date Closed: 11/6/1996
Addressee(s) and Addressee Status: USCG (Closed - Unacceptable Action)
Keyword(s):

Safety Recommendation History
From: NTSB
To: USCG
Date: 11/6/1996
Response: THE BOARD IS DISAPPOINTED THAT THE FINAL REGULATIONS SATISFY ONLY 1 OF 3 PARTS OF THIS RECOMMENDATION. ALTHOUGH THE GUIDANCE ON FLOODED LEGS AT 46 CFR 134.170(B)(9) IS ACCEPTABLE, THE NEW REGULATIONS DO NOT ADDRESS WAVE-INDUCED MOTOR OR SEA WATER ON DECK. BECAUSE THESE RULES ARE NOW FINAL & THE INTENT OF THE RECOMMENDATION HAS NOT BEEN SATISFIED, M-90-95 HAS BEEN CLASSIFIED "CLOSED--UNACCEPTABLE ACTION."

From: USCG
To: NTSB
Date: 3/15/1996
Response: THE USCG'S INTERIM FINAL RULES FOR OFFSHORE SUPPLY VESSELS/LIFTBOATS (46 CFR 90, ET AL.) (CGD82-004 & CGD86-074 PUBLISHED IN FR THURSDAY 11/16/95) BECAME EFFECTIVE THIS DATE.

From: NTSB
To: USCG
Date: 11/28/1994
Response: BECAUSE THE USCG INTENDS TO INCLUDE THIS RECOMMENDATION IN THE PENDING 46 CFR SUBCHAPTER L & REVISED NVIC 8-81, M-90-95 HAS BEEN CLASSIFIED "OPEN--ACCEPTABLE RESPONSE," PENDING PUBLICATION OF THE FINAL RULES.

From: USCG
To: NTSB
Date: 3/23/1994
Response: THE USCG CONTINUES TO BELIEVE THAT STABILITY CRITERIA WHICH ALLOW FOR THE ADVERSE EFFECTS OF RAISED FLOODED LEGS IS NOT NECESSARY. INSPECTION OR MONITORING METHODS CAN BE USED TO IDENTIFY FLOOD LEGS, & PROPER OPERATING PROCEDURES WILL PREVENT FLOODED LEGS FROM BEING RAISED. WAVE INDUCED MOTIONS & EFFECTS OF SEAWATER ON DECK ARE ACKNOWLEDGED AREAS TO CONCERN, BUT CURRENT TECHNOLOGY IS NOT SUFFICIENTLY ADVANCED TO ALLOW DEVELOPMENT OF SPECIFIC OPERATING OR STABILITY CRITERIA IN THESE AREAS. HOWEVER, THE USCG IS WORKING WITH THE SOCIETY OF NAVAL ARCHITECTS & MARINE ENGINEER (SNAME) ON CONTRACTING FOR SPECIAL MODEL TESTING INVOLVING A HYBRID EVALUATION OF THE COMBINED EFFECTS OF SEAWATER ON DECK & WAVE INDUCED VESSEL MOTIONS.

From: NTSB
To: USCG
Date: 5/18/1992
Response: Safety Recommendation M-90-95 asked that the Coast Guard require that liftboat stability criteria allow for the adverse effects of raised flooded legs, wave-induced motions, and sea water on deck. The Safety Board agrees that no need exists to require stability criteria allowing for the adverse effects of raised flooded legs if liftboat operators rigorously adhere to u' operating procedures that prohibit raising flooded legs. The Safety Board expressed its concern on that subject in Safety Recommendation M-90-86. The Coast Guard's intent to promulgate regulations that will require a means to detect and dewater flooded legs and will prohibit liftboat operators from raising flooded legs satisfies the intent of this safety recommendation. Therefore, Safety Recommendation M-90-95 has been classified as "Open--Acceptable Alternate Response" pending publication of the final rule.

From: USCG
To: NTSB
Date: 7/8/1991
Response: I PARTIALLY CONCUR WITH THIS RECOMMENDATION. STABILITY CRITERIA WHICH ALLOW FOR THE ADVERSE EFFECTS OF RAISED FLOODED LEGS ARE NOT NECESSARY. INSPECTION OR MONITORING METHODS CAN BE USED TO IDENTIFY THE PRESENCE OF FLOODED LEGS, AND PROPER OPERATING PROCEDURES WILL PREVENT FLOODED LEGS FROM BEING RAISED. TEMPORARY REPAIRS CAN BE MADE ON SITE, WHILE A LIFTBOAT IS ELEVATED, AND LEGS CAN BE DEWATERED EVEN WHEN NO PERMANENT DEWATERING SYSTEM IS INSTALLED. WAVE INDUCED MOTIONS AND EFFECTS OF SEAWATER ON DECK ARE ACKNOWLEDGED AREAS OF CONCERN THAT HAVE BEEN STUDIED, BUT CURRENT TECHNOLOGY IS NOT SUFFICIENTLY ADVANCED TO ALLOW DEVELOPMENT OF SPECIFIC OPERATING OR STABILITY CRITERIA IN THESE AREAS. PAST EXPERIENCE HAS SHOWN THAT LIFTBOATS CAN BE OPERATED WITH AN ACCEPTABLE LEVEL OF SAFETY WHEN ADEQUATE INTACT STABILITY IS MAINTAINED. THIS WAS NOT THE CASE IN THE CASUALTY OF THE M/V TITAN. THE CG BELIEVES THAT THE STABILITY CRITERIA PROPOSED IN THE NPRM FOR 46 CFR SUBCHAPTER L, WHICH WERE DEVELOPED WITH CONSIDERATION OF THE POTENTIAL EFFECTS OF SEAWATER ON DECK AND WAVE-INDUCED MOTIONS, PROVIDE AN ADEQUATE LEVEL OF SAFETY.

From: NTSB
To: USCG
Date: 4/16/1991
Response: From the accident report of the capsizing and sinking of the U.S. liftboat M/V Avco V in the Gulf of Mexico on July 31, 1989. The Board adopted this report on 4/16/1991. Also, the Safety Board reiterates the following safety recommendations issued to the Coast Guard as a result of its investigation of the capsizing and sinking of the liftboat TITAN on June 29, 1989. (M-90-87, M-90-88, M-90-89, M-90-91, M-90-92, M-90-93, M-90-95, M-90-97, M-90-98)`