The EXXON VALDEZ incident

In 1989, Exxon Corp. caused one of the worst environmental disasters ever. Shortly after midnight on March 24, the Exxon Valdez oil tanker ran aground, spilling 250,000 barrels, an amount equal to more than 10 million gallons, of oil into Alaska’s Prince William Sound. Efforts to contain the spill were slow and Exxon’s response was even slower. The incident would go down in crisis management history as a textbook case of how not to respond during a crisis, and “by the time the media was finished, the Exxon name was synonymous with environmental catastrophe.” 

 Exxon and the U.S. Coast Guard began a massive cleanup effort that eventually involved more than 11,000 Alaskan residents and thousands of Exxon and contractor personnel and costed over $4.3 billion in settlements, cleanup, fines and compensatory payments.  In 1992 the U.S. Coast Guard declared the clean up complete.

The incident

The Exxon Valdez had reached the Alyeska Marine Terminal at 11:30 p.m. on March 22 to take on cargo. It carried a crew of 19 plus the captain. Third Mate Gregory Cousins, who became a central figure in the grounding, was relieved of watch duty at 11:50 p.m. Ship and terminal crews began loading crude oil onto the tanker at 5:05 a.m. on March 23 and increased loading to its full rate of 100,000 barrels an hour by 5:30 a.m. Chief Mate James R. Kunkel supervised the loading.

March 23, 1989 was a rest day of sorts for some members of the Exxon Valdez crew. Capt. Joseph Hazelwood spent most of the day conducting ship’s business, shopping and, according to testimony before the National Transportation Safety Board (NTSB), drinking alcoholic beverages with the other ship’s officers in at least two Valdez bars. 

Loading of the Exxon Valdez had been completed for an hour by the time the group returned to the ship. They left Valdez by taxi cab at about 7:30 p.m., got through Alyeska terminal gate security at 8:24 p.m. and boarded ship. Radio officer Roberson, who commenced prevoyage tests and checks in the radio room soon after arriving at the ship, later said no one in the group going ashore had expected the ship to be ready to leave as soon as they returned.

Hazelwood’s activities in town that day and on the ship that night would become a key focus of accident inquiries, the cause of a state criminal prosecution, and the basis of widespread media sensation. Without intending to minimize the impact of Hazelwood’s actions however, one basic conclusion is that the grounding at Bligh Reef represents much more than the error of a possibly drunken skipper: It was the result of the gradual degradation of oversight and safety practices that had been intended, 12 years before, to safeguard and backstop the inevitable mistakes of human beings.

The ship was under the direction of pilot Murphy and accompanied by a single tug for the passage through Valdez Narrows, the constricted harbor entrance about 7 miles from the berth. The passage through Valdez Narrows proceeded uneventfully. At 10:49 p.m. the ship reported to the Valdez Vessel Traffic Center that it had passed out of the narrows and was increasing speed. At 11:05 p.m. Murphy asked that Hazelwood be called to the bridge in anticipation of his disembarking from the ship, and at 11: 10 p.m. Hazelwood returned. Murphy disembarked at 11:24 p.m., with assistance from Third Mate Cousins. While Cousins was helping Murphy and then helping stow the pilot ladder, Hazelwood was the only officer on the bridge and there was no lookout even though one was required, according to an NTSB report.

At 11:25 p.m. Hazelwood informed the Vessel Traffic Center that the pilot had departed and that he was increasing speed to sea speed. He also reported that “judging, ah, by our radar, we’ll probably divert from the TSS [traffic separation scheme] and end up in the inbound lane if there is no conflicting traffic.” The traffic center indicated concurrence, stating there was no reported traffic in the inbound lane.

The traffic separation scheme is designed to do just that-separate incoming and outgoing tankers in Prince William Sound and keep them in clear, deep waters during their transit. It consists of inbound and outbound lanes, with a half-mile-wide separation zone between them. Small icebergs from nearby Columbia Glacier occasionally enter the traffic lanes. Captains had the choice of slowing down to push through them safely or deviating from their lanes if traffic permitted. Hazelwood’s report, and the Valdez traffic center’s concurrence, meant the ship would change course to leave the western, outbound lane, cross the separation zone and, if necessary, enter the eastern, inbound lane to avoid floating ice. At no time did the Exxon Valdez report or seek permission to depart farther east from the inbound traffic lane; but that is exactly what it did.

At 11:30 p.m. Hazelwood informed the Valdez traffic center that he was turning the ship toward the east on a heading of 200 degrees and reducing speed to “wind my way through the ice” (engine logs, however, show the vessel’s speed continued to increase). At 11: 39 Cousins plotted a fix that showed the ship in the middle of the traffic separation scheme. Hazelwood ordered a further course change to a heading of 180 degrees (due south) and, according to the helmsman, directed that the ship be placed on autopilot. The second course change was not reported to the Valdez traffic center. For a total of 19 or 20 minutes the ship sailed south-through the inbound traffic lane, then across its easterly boundary and on toward its peril at Bligh Reef. Traveling at approximately 12 knots, the Exxon Valdez crossed the traffic lanes’ easterly boundary at 11:47 p.m.

At 11:52 p.m. the command was given to place the ship’s engine on “load program up”-a computer program that, over a span of 43 minutes, would increase engine speed from 55 RPM to sea speed full ahead at 78.7 RPM. After conferring with Cousins about where and how to return the ship to its designated traffic lane, Hazelwood left the bridge. The time, according to NTSB testimony, was approximately 11:53 p.m.

Cousins was the only officer on the bridge-a situation that violated company policy and perhaps contributed to the accident. A second officer on the bridge might have been more alert to the danger in the ship’s position, the failure of its efforts to turn, the autopilot steering status, and the threat of ice in the tanker lane.

Cousins’ duty hours and rest periods became an issue in subsequent investigations. Exxon Shipping Company has said the third mate slept for a total of nearly 10 hours sleep in the 24 hours preceding the accident. However, testimony before the NTSB suggests that Cousins may have been awake and generally at work for up to 18 hours preceding the accident.

Manning policies also may have affected crew fatigue. Whereas tankers in the 1950s carried a crew of 40 to 42 to manage about 6.3 million gallons of oil, according to Arthur McKenzie of the Tanker Advisory Center in New York, the Exxon Valdez carried a crew of 19 to transport 53 million gallons of oil.

Minimum vessel manning limits are set by the U.S. Coast Guard, but without any agencywide standard for policy. The Coast Guard had certified Exxon tankers for a minimum of 15 persons (14 if the radio officer is not required). Frank Iarossi, president of Exxon Shipping Company, had stated that his company’s policy is to reduce its standard crew complement to 16 on fully automated, diesel-powered vessels by 1990. “While Exxon has defended their actions as an economic decision,” the manning report said, “criticism has been leveled against them for manipulating overtime records to better justify reduced manning levels.”  Iarossi and Exxon maintained that modem automated vessel technology permits reduced manning without compromise of safety or function. 

Accounts and interpretations differ as to events on the bridge from the time Hazelwood left his post to the moment the Exxon Valdez struck Bligh Reef. NTSB testimony by crew members and interpretations of evidence by the State of Alaska conflict in key areas, leaving the precise timing of events still a mystery. But the rough outlines are discernible:

Some time during the critical period before the grounding during the first few minutes of Good Friday, March 24, Cousins plotted a fix indicating it was time to turn the vessel back toward the traffic lanes. About the same time, lookout Maureen Jones reported that Bligh Reef light appeared broad off the starboard bow-i.e., off the bow at an angle of about 45 degrees. The light should have been seen off the port side (the left side of a ship, facing forward); its position off the starboard side indicated great peril for a supertanker that was out of its lanes and accelerating through close waters. Cousins gave right rudder commands to cause the desired course change and took the ship off autopilot. He also phoned Hazelwood in his cabin to inform him the ship was turning back toward the traffic lanes and that, in the process, it would be getting into ice. When the vessel did not turn swiftly enough, Cousins ordered further right rudder with increasing urgency. Finally, realizing the ship was in serious trouble, Cousins phoned Hazelwood again to report the danger-and at the end of the conversation, felt an initial shock to the vessel. The grounding, described by helmsman Robert Kagan as “a bumpy ride” and by Cousins as six “very sharp jolts,” occurred at 12:04 a.m.

The vessel came to rest facing roughly southwest, perched across its middle on a pinnacle of Bligh Reef Eight of 11 cargo tanks were punctured. Computations aboard the Exxon Valdez showed that 5.8 million gallons had gushed out of the tanker in the first three and a quarter hours. Weather conditions at the site were, reported to be 33 degrees F, slight drizzle rain/snow mixed, north winds at 10 knots and visibility 10 miles at the time of the grounding.

The Exxon Valdez nightmare had begun. Hazelwood – perhaps drunk, certainly facing a position of great difficulty and confusion – would struggle vainly to power the ship off its perch on Bligh Reef. The response capabilities of Alyeska Pipeline Service Company to deal with the spreading sea of oil would be tested and found to be both unexpectedly slow and woefully inadequate. The worldwide capabilities of Exxon Corp. would mobilize huge quantities of equipment and personnel to respond to the spill-but not in the crucial first few hours and days when containment and cleanup efforts are at a premium. The U.S. Coast Guard would demonstrate its prowess at ship salvage, protecting crews and lightering operations, but prove utterly incapable of oil spill containment and response. State and federal agencies would show differing levels of preparedness and command capability. And the waters of Prince William Sound-and eventually more than 1,000 miles of beach in Southcentral Alaska-would be fouled by 10.8 million gallons of crude oil.

After feeling the grounding Hazelwood rushed to the bridge, arriving as the ship came to rest. He immediately gave a series of rudder orders in an attempt to free the vessel, and power to the ship’s engine remained in the “load program up” condition for about 15 minutes after impact. Chief Mate Kunkel went to the engine control room and determined that eight cargo tanks and two ballast tanks had been ruptured; he concluded the cargo tanks had lost an average of 10 feet of cargo, with approximately 67 feet of cargo remaining in each. He informed Hazelwood of his initial damage assessment and was instructed to perform stability and stress analysis. At 12:19 a.m. Hazelwood ordered that the vessel’s engine be reduced to idle speed.

At 12:26 a.m., Hazelwood radioed the Valdez traffic center and reported his predicament to Bruce Blandford, a civilian employee of the Coast Guard who was on duty. “We’ve fetched up, ah, hard aground, north of Goose Island, off Bligh Reef and, ah, evidently leaking some oil and we’re gonna be here for a while and, ah, if you want, ah, so you’re notified.” That report triggered a nightlong cascade of phone calls reaching from Valdez to Anchorage to Houston and eventually around the world as the magnitude of the spill became known and Alyeska and Exxon searched for cleanup machinery and materials.

Hazelwood, meanwhile, was not finished with efforts to power the Exxon Valdez off the reef. At approximately 12:30 a.m., Chief Mate Kunkel used a computer program to determine that though stress on the vessel exceeded acceptable limits, the ship still had required stability. He went to the bridge to advise Hazelwood that the vessel should not go to sea or leave the area. The skipper directed him to return to the control room to continue assessing the damage and to determine available options. At 12:35 p.m., Hazelwood ordered the engine back on-and eventually to “full ahead”– and began another series of rudder commands in an effort to free the vessel. After running his computer program again another way, Kunkel concluded that the ship did not have acceptable stability without being supported by the reef. The chief mate relayed his new analysis to the captain at I a.m. and again recommended that the ship not leave the area. Nonetheless, Hazelwood kept the engine running until 1:41 a.m., when he finally abandoned efforts to get the vessel off the reef.

 

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s