Crown Pacific Limited Partnership (“Crown”), a forest products company, challenges a citation issued by the Occupational Safety and Health Administration (“OSHA”). It argues that sliding a tire off a pickup truck is not an activity “related” to the “mounting and demounting of rim wheels” when the employer is not engaged in that business and the tire servicing is performed by a third party. We agree and grant Crown’s petition for review.
I
“Accidents,” Dickens observed, “will occur in the best-regulated families,” 1 and, indeed, a tragic mishap commenced the instant argument about how well-regulated Crown’s activities are. Forklift operator Terry Davis and mechanic Wally Coissart were unloading a two-piece rim wheel that had just been repaired at an independent tire repair shop and returned to Crown’s wood-processing facility in Bonners Ferry, Idaho, for storage. Davis and Coissart edged the tire over the side of the pickup truck. The rim wheel exploded when it hit the ground, launching a rim wheel component into Davis’s chest and killing him on impact.
The cause of the explosion was not shrouded in mystery: the dangers of handling multi-piece rim wheels 2 have been *1038 well documented. Multi-piece rim wheels are prone to separate upon inflation when improperly assembled, often causing the components of the rim wheel “to be hurled violently through the air, with the likelihood of striking a person and causing serious injury or death.” 45 Fed.Reg. 6706, 6707 (Jan. 29, 1980) (to be codified at 29 C.F.R. pt. 1910 (1980)).
Following the accident, an OSHA compliance officer conducted an inspection of the Crown facility and cited Crown for serious violations of sections 1910.177(c)(1) and (f)(10), which impose certain safety procedures and training requirements upon employers whose employees “service” multi-piece rim wheels. See 29 C.F.R. §§ 1910.177(c)(1) & (f)(10). Crown contested the citation. After conducting an evidentiary hearing, the administrative law judge (“ALJ”) concluded that Crown’s activities fell within the scope of § 1910.177, and assessed a penalty of $4,000 on Crown for each violation. Crown appealed the ALJ’s decision to the Occupational Safety and Health Review Commission (“Commission”), which affirmed the citation. Crown now appeals the final order of the Commission pursuant to 29 U.S.C. § 660(a).
We review the Commission’s legal conclusions to determine whether they are “arbitrary, capricious, an abuse of discretion, or otherwise not in accordance with law.” 5 U.S.C. § 706(2)(A);
see Martin v. OSHRC,
II
At issue is the regulatory reach of OSHA’s multi-piece rim wheel directives. The substantive requirements of § 1910.177 apply to those employers whose employees engage in the “servicing of multi-piece and single piece rim wheels” used on large vehicles such as those used by Crown. See 29 C.F.R. § 1910.177(a)(1) (1989); 49 Fed.Reg. 4338, 4342 (Feb. 3, 1984) (amending 29 C.F.R. § 1910.177 (1980) to include single piece rim wheels). Under the regulation at issue, “service” or “servicing” means “the mounting and demounting of rim wheels, and related activities such as inflating, deflating, installing, removing, and handling” of rim wheels. 29 C.F.R. § 1910.177(b) (emphasis added). “Mounting a tire” involves the assembly of the wheel and tire components to form a rim wheel, including inflation; whereas, “installing a rim wheel” means the “transfer and attachment of an assembled rim wheel onto a vehicle axle hub.” Id.
Crown was clearly not involved in the mounting or demounting of the rim wheels; it had contracted with professionals to perform that task. Thus, the salient question is whether § 1910.177 applies to employers whose employees do not “mount and demount” multi-piece rim wheels.
“A regulation should be construed to give effect to the natural and plain meaning of its words.”
Diamond
*1039
Roofing Co., Inc. v. OSHRC,
Thus, there must be a nexus between the incidental activities of “inflating, deflating, installing, removing and handling” and the primary regulated activity of mounting and demounting. To say that the regulation applies to employers who are not engaged in the business of mounting and demounting tires stretches the “natural and plain meaning” of “related activities” too far. Indeed, such a construction would impermissibly read the phrase “related activities” out of the definition of “servicing.”
See Morales,
Our interpretation is in accord with the structure of the regulation. The careful distinction made by the Secretary between the meaning of “mounting” a rim wheel and “installing” a tire,
see 45
Fed. Reg. at 6708, indicates that she intended § 1910.177 to apply only to employers who engage in the enumerated activities as they pertain to “mounting and demounting” multi-piece rim wheels. In fact, the Secretary early on noted that accidents resulting from the separation of multi-piece rim wheels “are most likely to occur while a tire has just been mounted on a rim is being inflated or immediately after it has been inflated.” 45 Fed.Reg. at 6707;
see Martin,
Further, in amending § 1910.177 in 1984 to apply to both multi-piece and single piece rim wheels, OSHA also eliminated the phrase “or storing of multi-piece rim wheels” from the definition of “servicing” without explanation. 3 See 29 C.F.R. *1040 § 1910.177 (1980). By excluding activities less connected to the demounting and mounting process such as maintenance and storage, the 1984 amendment evinces an intent by the Secretary to limit the scope of the regulation’s substantive requirements to employers directly engaged in the mounting and demounting process.
Finally, in examining a regulation, we take into account common sense, the regulatory purpose and the practical consequences of the suggested interpretations.
See Condon v. Bowen,
Simply put, “[a]n employer should not have to guess at what the Secretary intended.”
Martin,
Thus, even recognizing the deference we must afford the Secretary’s construction, we conclude that the plain meaning of the regulation precludes the Secretary’s and the ALJ’s interpretation.
Ill
In sum, we hold that § 1910.177 cannot reasonably be applied to employers such as Crown whose employees are not engaged in any mounting and demounting activities. We therefore grant the petition for review, precluding the application of § 1910.177’s requirements to Crown’s handling activities.
PETITION GRANTED.
Notes
. Charles Dickens, David Copperfield 399 (Dodd, Mead & Co. ed„ 1943) (1850).
. A "multi-piece rim wheel” is a vehicle wheel that consists of a "tire, tube and liner” together with a "multi-piece wheel” that is made up of two or more parts designed to hold the tire and wheel together by interlocking components when the tire is inflated. See generally 29 C.F.R. § 1910.177(b) (1984). Because vehicular size dictates their use, these wheels are used most frequently on *1038 trucks, tractors, buses, trailers, and construction equipment.
. Prior to the 1984 amendment, "servicing” was defined to mean:
the mounting and demounting of multi-piece rim wheels, and related activity such *1040 as inflating, deflating, installing, removing, maintaining, handling or storing of multi-piece rim wheels, including inflating and deflating of wheels installed on vehicles.
29 C.F.R. § 1910.177 (1980) (emphasis added).
. William Shakespeare, Othello, Act IV, scene 1, 111.
. The Secretary further complicates matters by suggesting that perhaps the regulation might only apply to a tire "recently demounted and mounted” by an employer who did not demount or mount the tire. However, the Secretary provides no rationale for this theory, which contradicts the Secretary’s central argument and finds no support in either the language of the regulation or its regulatory history. In any event, the Secretary’s assertion creates additional concerns of fair notice to the employer because the Secretary provides no guidance as to what constitutes a "recent enough” demounting and mounting of the tire meriting the application of § 1910.177.
See Kent Nowlin,
.For this reason, even if we were to determine that the Secretary’s interpretation of § 1910.177 were permissible, we could not find that the Secretary’s application of § 1910.177 to Crown’s "handling” of rim wheels provided Crown with the requisite fair notice that the requirements of § 1910.177 applied to its activities.
